Temperature Sensor

Abstract

To provide a temperature sensor capable of suppressing positional deviation of a wiring portion.SOLUTION: Wiring portions 5A and 5B are arranged in a first arrangement direction D1 in a drawing portion E1 which is a spot drawn from a temperature measuring element 8. On the other hand, a guide portion 12 guides the wiring portions 5A and 5B in a state of being arranged in a second arrangement direction D2 different from the first arrangement direction D1. In this case, the guide portion 12 can form a portion (twisted portion TW as shown in figure 3) twisted so as to change the arrangement direction on the wiring portions 5A and 5B. When the twisted portion is formed like this, the wiring portions 5A and 5B hardly cause positional deviation.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] One aspect of the present invention relates to a temperature sensor. [Background technology]

[0002] A conventional temperature sensor is described in Patent Document 1. This temperature sensor includes a temperature measuring element that measures temperature, a pair of wiring parts connected to the temperature measuring element, and a case that houses the temperature measuring element and the wiring parts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2021 / 070898 Summary of the Invention [Problem to be solved by the invention]

[0004] In the temperature sensor described above, a pair of wiring sections extending from the temperature sensor element are routed inside the case while maintaining a constant arrangement direction, and then routed from the case to the outside. If the pair of wiring sections are routed in the same arrangement direction as the wiring sections extending from the temperature sensor element, it may be difficult to control the undulations of the wiring sections, which may result in misalignment of the wiring sections within the case (wiring movement). Such misalignment of the wiring sections may affect the performance of the temperature sensor.

[0005] An object of one aspect of the present invention is to provide a temperature sensor capable of suppressing misalignment of a wiring portion. [Means for solving the problem]

[0006] A temperature sensor according to one aspect of the present invention comprises a temperature measuring element for measuring temperature, a pair of wiring sections connected to the temperature measuring element, and a case that houses the temperature measuring element and the pair of wiring sections and that leads the wiring sections to the outside at an outlet section, the case having a guide section that guides the pair of wiring sections drawn out from the temperature measuring element to the outlet section, the pair of wiring sections being arranged in a first arrangement direction at the outlet section where they are drawn out from the temperature measuring element, and the guide section guides the pair of wiring sections in a state where they are arranged in a second arrangement direction different from the first arrangement direction.

[0007] In the temperature sensor, the case has a guide portion that guides a pair of wiring portions drawn from the temperature measuring element to the outlet portion. That is, the pair of wiring portions drawn from the temperature measuring element extend inside the case toward the outlet portion while being guided by the guide portion. The pair of wiring portions are arranged in a first arrangement direction at the draw-out portion where they are drawn from the temperature measuring element. In contrast, the guide portion guides the pair of wiring portions in a state where they are arranged in a second arrangement direction different from the first arrangement direction. In this case, the guide portion can form a twisted portion in the pair of wiring portions so as to change the arrangement direction. When such a twisted portion is formed, the wiring portions are less likely to become misaligned. As described above, it is possible to suppress misalignment of the wiring portions.

[0008] The pair of wiring portions may be arranged in the second arrangement direction at the outlet portion. In this case, a twisted portion is formed in the pair of wiring portions between the lead-out portion and the outlet portion so as to change the arrangement direction. When such a twisted portion is formed, the wiring portions are less likely to become misaligned.

[0009] The guide portion may have a pair of first sidewall portions that guide the pair of wiring portions and a pair of second sidewall portions that guide the pair of wiring portions extending in a direction different from that of the first sidewall portions. In this case, the guide portion can pull the wiring portions out of the outlet portion of the case in a direction different from the direction guided by the first sidewall portions.

[0010] The pair of first sidewalls and the pair of second sidewalls may sandwich and support the pair of wiring portions. In this case, the guide portion can sufficiently support the pair of wiring portions to prevent misalignment.

[0011] The pair of second sidewalls may be arranged such that their ends are offset from each other in the direction in which the wiring portions they guide extend. When the pair of wiring portions bend to be inserted from the first sidewalls into the second sidewalls, the inner second sidewall can smoothly accommodate the bending wiring portions.

[0012] The guide portion may have a main surface, and a guide groove for guiding the wiring portion may be formed on the main surface. In this case, the wiring portion can extend while being guided by the guide groove, thereby suppressing misalignment of the wiring portion.

[0013] The case has a first case part and a second case part, and the first case part and the second case part may have different heat capacities. For example, when the wiring part is subjected to thermal fluctuations, the influence of the thermal fluctuations on the temperature measuring element side can be suppressed by adjusting the heat capacity of each case part. [Effects of the Invention]

[0014] According to one aspect of the present invention, it is possible to provide a temperature sensor that can suppress misalignment of a wiring portion. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view of a temperature sensor 1 according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of the temperature sensor with the second case portion of the case omitted. [Figure 3] FIG. 2 is an enlarged perspective view of the temperature sensor without the case, showing the structure around the temperature measuring element. [Figure 4] 3 is a perspective view of the temperature sensor in the state shown in FIG. 2, seen from a different angle. [Figure 5]10 is a perspective view showing a guide portion of the first case portion with the wiring portion omitted. FIG. [Figure 6] FIG. 10 is a perspective view showing a pair of wiring portions of a temperature sensor according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. In the description, the same elements or elements having the same functions will be denoted by the same reference numerals, and redundant description will be omitted.

[0017] FIG. 1 is a perspective view of a temperature sensor 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the temperature sensor 1 with the second case portion 6B of the case 6 omitted. FIG. 3 is an enlarged perspective view of the temperature sensor 1 with the case omitted, showing the structure around the temperature measuring element. The temperature sensor 1 is a sensor that measures temperature and transmits a signal related to the measurement result to a device (not shown) via a pair of wiring portions. In the following explanation, the positional relationship of each component will be explained using an XYZ coordinate system as shown in each figure.

[0018] The temperature sensor 1 comprises a base portion 2, a temperature measurement portion 3, and an extension portion 4. The base portion 2 is the portion that forms the base of the temperature sensor 1. The temperature measurement portion 3 is the portion that measures the temperature. The temperature measurement portion 3 extends from the base portion 2 to the positive side in the X-axis direction. The extension portion 4 is a portion that extends from the base portion 2 to the negative side in the Z-axis direction. The extension portion 4 is a portion that internally leads the wiring portions 5A and 5B from the base portion 2 to the negative side in the Z-axis direction.

[0019] As shown in FIGS. 1 to 3, the temperature sensor 1 includes a case 6, a separator 7 (see FIGS. 2 and 3), a temperature measuring element 8 (see FIG. 3), and a pair of wiring portions 5A and 5B.

[0020] The case 6 is a housing that houses the temperature measuring element 8, the wiring portions 5A and 5B, and the separator 7. The case 6 also allows the wiring portions 5A and 5B housed inside to exit the case 6 through an outlet 10 provided at a predetermined position. The case 6 includes a first case portion 6A and a second case portion 6B. The first case portion 6A is a member that supports the temperature measuring element 8, the wiring portions 5A and 5B, and the separator 7 in a positioned state during assembly of the temperature sensor 1. The second case portion 6B is a member that covers the first case portion 6A while supporting the temperature measuring element 8, the wiring portions 5A and 5B, and the separator 7. The second case portion 6B is formed by resin molding the first case portion 6A while supporting the temperature measuring element 8, the wiring portions 5A and 5B, and the separator 7. The first case portion 6A and the second case portion 6B may be made of different resin materials. Therefore, the first case portion 6A and the second case portion 6B have different heat capacities. As the resin material for the first case portion 6A and the second case portion 6B, for example, PPS (polyphenylene sulfide), PBT (polybutylene terephthalate), PA (polyamide), etc. may be adopted.

[0021] As shown in FIG. 2, the first case 6A includes a housing 11 and a guide 12. The housing 11 houses the temperature sensor 8, the wiring sections 5A and 5B, and the separator 7. The housing 11 is combined with the separator 7 to guide the wiring sections 5A and 5B in the X-axis direction. The housing 11 has a rectangular box-like configuration with its longitudinal direction in the X-axis direction. Specifically, the housing 11 includes a bottom wall 11a and a top wall 11b that face each other in the Z-axis direction, side walls 11c and 11d that face each other in the Y-axis direction, and an end wall 11e that is located at the end on the positive side in the X-axis direction. An opening is formed at the end on the negative side in the X-axis direction of the housing 11, allowing the separator 7 and the like to be inserted. In addition, an extension portion 13 that extends further toward the negative side in the X-axis direction than the end of the storage portion 11 is formed in half of the area on the positive side in the Y-axis direction of the end portion of the bottom wall portion 11a on the negative side in the X-axis direction.

[0022] The guide portion 12 is a portion that guides the wiring portions 5A and 5B from the negative end of the housing portion 11 in the X-axis direction toward the negative side in the Z-axis direction. The guide portion 12 has a guide wall portion 14 that extends from the negative end of the bottom wall portion 11a of the housing portion 11 in the X-axis direction toward the negative side in the Z-axis direction. The guide wall portion 14 is provided in a half region of the end of the bottom wall portion 11a on the negative side in the Y-axis direction. The guide wall portion 14 extends parallel to the YZ plane. The guide wall portion 14 guides the wiring portions 5A and 5B along the main surface 14a on the negative side in the X-axis direction. Restriction walls 15A and 15B that face each other in the Y-axis direction are formed at the positive end of the guide wall portion 14 in the Z-axis direction.

[0023] The guide portion 12 further includes a pair of first side walls 16A, 16B and a pair of second side walls 17A, 17B. The first side walls 16A, 16B and the second side walls 17A, 17B are formed to rise from the main surface 14a of the guide wall portion 14 toward the negative side in the X-axis direction. The first side walls 16A, 16B guide the wiring portions 5A, 5B in the Z-axis direction. The first side walls 16A, 16B are provided near the center position of the guide wall portion 14 in the Z-axis direction. The second side walls 17A, 17B guide the wiring portions 5A, 5B extending toward the negative side in the Y-axis direction, which is a direction different from that of the first side walls 16A, 16B. The second side walls 17A, 17B are provided near the end of the guide wall portion 14 on the negative side in the Z-axis direction. The ends of the second side walls 17A and 17B on the negative side in the Y-axis direction form the outlet 10 of the case 6.

[0024] The second case part 6B covers the portion of the first case part 6A on the negative side in the X-axis direction. The second case part 6B covers the vicinity of the end part on the negative side in the X-axis direction of the accommodation part 11, thereby constituting the base part 2 (see FIG. 1). The second case part 6B also covers the guide part 12 from the negative side in the X-axis direction, thereby constituting the extension part 4 (see FIG. 1). The portion on the positive side in the X-axis direction of the accommodation part 11 extends to the positive side in the X-axis direction without being covered by the second case part 6B. This portion constitutes the temperature measurement part 3.

[0025] As shown in FIG. 3 , the separator 7 is a member that holds the temperature measuring element 8 and guides the wiring portions 5A and 5B. The separator 7 is a plate-like member that extends parallel to the XY plane and has its longitudinal direction in the Y-axis direction. The separator 7 has a base portion 21 that supports the temperature measuring element 8 in a region on the positive side of the X-axis direction. The separator 7 also has a partition portion 22 that rises from the positive side of the Z-axis direction at a central position in the Y-axis direction and extends in the X-axis direction. The partition portion 22 extends from the positive end of the separator 7 in the X-axis direction to the negative end. The partition portion 22 also has a portion that extends further toward the negative side of the X-axis direction than the negative end of the separator 7 in the X-axis direction. This portion functions as a guide portion 23 that guides the wiring portions 5A and 5B on the side opposite the temperature measuring element 8 in the X-axis direction. The guide portion 23 has a guide surface 23a that is inclined with respect to the thickness direction (Z-axis direction) of the separator 7. The guide surfaces 23a are formed on both sides in the Y-axis direction at the end on the positive side in the Z-axis direction of the guide portion 23. The guide surfaces 23a are inclined so that the end of the guide portion 23 tapers toward the positive side in the Z-axis direction.

[0026] The temperature measuring element 8 is a sensor that measures temperature. The temperature measuring element 8 has a measuring unit 24 that measures temperature and a pair of terminals 26A, 26B that are drawn out from the measuring unit 24. The temperature measuring element 8 is installed on the base 21 with the measuring unit 24 extending from the end of the separator 7 on the positive side in the X-axis direction. The terminals 26A, 26B are installed on the separator 7 so that they are separated by a partition wall 22. The temperature measuring element 8 is, for example, an NTC thermistor element whose resistance value changes with changes in temperature.

[0027] The wiring portions 5A and 5B are electric wires that are connected to the temperature measuring element 8 and transmit signals from the temperature measuring element 8 to external devices. The tips of the wiring portions 5A and 5B are connected to the terminal portions 26A and 26B via the connecting members 27, with the covering removed to expose the electric wire 5a. The wiring portions 5A and 5B extend from the connection points toward the negative side in the X-axis direction to the end of the housing 11 on the negative side in the X-axis direction (see FIG. 2). The portion of the wiring portions 5A and 5B that extends from the temperature measuring element 8 toward the negative side in the X-axis direction is referred to as the lead-out portion E1. The wiring portions 5A and 5B at the lead-out portion E1 are installed on the separator 7 so that they are separated by the partition wall 22. The assembly of the separator 7, the temperature measuring element 8, and the lead-out portion E1 of the wiring portions 5A and 5B is housed in the housing 11. The housing portion 11 is filled with a filler material, and the assembly is housed in the housing portion 11 in a state where it is covered with the filler material.

[0028] As shown in FIG. 2 , wiring portions 5A and 5B drawn out of housing portion 11 bend toward the negative side in the Z-axis direction and extend toward the negative side in the Z-axis direction while being guided by guide portion 12. The portion of wiring portions 5A and 5B that extends toward the negative side in the Z-axis direction while being guided by guide portion 12 is referred to as guided portion E2. In guided portion E2, wiring portions 5A and 5B are supported while being sandwiched between first side wall portions 16A and 16B. Furthermore, wiring portions 5A and 5B bend toward the negative side in the Y-axis direction near the end of guide portion 12 that is toward the negative side in the Z-axis direction and extends toward the negative side in the Y-axis direction while being guided by guide portion 12. The portion of wiring portions 5A and 5B that extends toward the negative side in the Y-axis direction while being guided by guide portion 12 is referred to as guided portion E3. In the guided portion E3, the wiring portions 5A and 5B are supported while being sandwiched between the second side wall portions 17A and 17B. The wiring portions 5A and 5B are guided by the second side wall portions 17A and 17B and are taken out of the case 6 at the outlet portion 10. In this manner, the wiring portions 5A and 5B are taken out of the case 6 at a position different from the temperature measuring element 8 in the Z-axis direction. Furthermore, the wiring portions 5A and 5B are taken out of the case 6 so as to extend in a direction (Y-axis direction) different from the direction in which the lead-out portion E1 taken out from the temperature measuring element 8 extends (X-axis direction).

[0029] Next, the wiring portions 5A and 5B will be described in more detail with reference to Figures 2, 4, and 5. Figure 4 is a perspective view of the temperature sensor 1 in the state shown in Figure 2, viewed from a different angle. Figure 5 is a perspective view showing the guide portion 12 of the first case portion 6A with the wiring portions 5A and 5B omitted.

[0030] In the following description, the "arrangement direction" refers to the direction in which the pair of wiring portions 5A, 5B are arranged side by side. That is, the wiring portions 5A, 5B extend in a specific extension direction while maintaining a state in which they are arranged substantially parallel to each other. In this case, the "arrangement direction" refers to a direction that is perpendicular to the extension direction and in which the wiring portions 5A, 5B face each other. As shown in FIGS. 2 and 4, in the lead-out portion E1, the wiring portions 5A, 5B are arranged in a first arrangement direction D1. In this embodiment, the Y-axis direction is the first arrangement direction D1 (see also FIG. 3).

[0031] In contrast, the guide portion 12 guides the wiring portions 5A and 5B in a state in which they are arranged in a second arrangement direction D2 different from the first arrangement direction D1. In the guided portion E2 and the guided portion E3, the wiring portions 5A and 5B are arranged in the second arrangement direction D2. Furthermore, in the outlet portion 10, the wiring portions 5A and 5B are arranged in the second arrangement direction D2. In this embodiment, the X-axis direction is the second arrangement direction D2.

[0032] First, the wiring portion 5A, which is disposed on the negative side of the Y axis direction in the lead-out portion E1, bends toward the negative side of the Z axis direction at the end of the bottom wall portion 11a of the housing portion 11 that is on the negative side of the X axis direction. Then, the wiring portion 5A passes between the restricting walls 15A and 15B and extends toward the negative side of the Z axis direction along the main surface 14a of the guide wall portion 14. The wiring portion 5B, which is disposed on the positive side of the Y axis direction in the lead-out portion E1, is drawn out from the opening of the housing portion 11 and extends to the expansion portion 13. Then, the wiring portion 5B bends toward the negative side of the Y axis direction and bends toward the negative side of the Z axis direction at the position of the restricting wall portion 15B. Then, the wiring portion 5B passes between the restricting walls 15A and 15B and extends toward the negative side of the Z axis direction. At this time, the wiring portion 5B extends toward the negative side of the Z axis direction while being arranged adjacent to the wiring portion 5A at a position on the negative side of the X axis direction. In this way, the second arrangement direction D2 of the wiring portions 5A, 5B is the X-axis direction. Note that, when the wiring portions 5A, 5B are being laid out, the restricting walls 15A, 15B restrict movement of the wiring portions 5A, 5B in the Y-axis direction.

[0033] When the wiring portions 5A, 5B pass between the restricting walls 15A, 15B and extend toward the negative side in the Z-axis direction, they are inserted into the space between the first sidewalls 16A, 16B. As a result, the wiring portions 5A, 5B are sandwiched between the first sidewalls 16A, 16B on both sides in the Y-axis direction. The first sidewalls 16A, 16B sandwich the wiring portions 5A, 5B, which are aligned in the X-axis direction, in the Y-axis direction, which is perpendicular to the alignment direction. Therefore, the gap between the first sidewalls 16A, 16B is set to a dimension corresponding to the diameter of one wiring portion 5A, 5B. As a result, the first sidewalls 16A, 16B can support the wiring portions 5A, 5B while maintaining the second alignment direction D2 in the X-axis direction.

[0034] When the wiring portions 5A, 5B pass through the first side walls 16A, 16B and extend toward the negative side in the Z-axis direction, they are bent toward the Y-axis direction near the lower end of the guide wall 14 while maintaining the second arrangement direction D2 in the X-axis direction. Note that a restricting wall 18 is provided near the lower end of the guide wall 14 at a position on the positive side in the Y-axis direction with respect to the wiring portions 5A, 5B (see FIG. 4). The restricting wall 18 restricts movement of the wiring portions 5A, 5B toward the positive side in the Y-axis direction when the wiring portions 5A, 5B are bent.

[0035] When the wiring portions 5A and 5B are bent near the lower end of the guide wall portion 14, they extend toward the negative side in the Y-axis direction and are inserted into the space between the second sidewall portions 17A and 17B. As a result, the wiring portions 5A and 5B are sandwiched between the second sidewall portions 17A and 17B on both sides in the Z-axis direction. The second sidewall portions 17A and 17B sandwich the wiring portions 5A and 5B, which are aligned in the X-axis direction, in the Z-axis direction, which is perpendicular to the alignment direction. Therefore, the gap between the second sidewall portions 17A and 17B is set to a dimension corresponding to the diameter of one wiring portion 5A and 5B. As a result, the second sidewall portions 17A and 17B can support the wiring portions 5A and 5B while maintaining the second alignment direction D2 in the X-axis direction. Furthermore, after passing through the second sidewall portions 17A and 17B, the wiring portions 5A and 5B are drawn out from the outlet portion 10 to the outside.

[0036] The second side wall portions 17A, 17B are arranged such that their ends 17Aa, 17Ba are offset from each other in the direction (Y-axis direction) in which the wiring portions 5A, 5B they guide extend. The ends 17Aa, 17Ba are ends on the positive side of the second side wall portions 17A, 17B in the Y-axis direction. Here, when the wiring portions 5A, 5B are bent near the lower end of the guide wall portion 14, they are inserted into the second side wall portions 17A, 17B in a significantly curved state. At this time, the second side wall portion 17A on the positive side in the Z-axis direction is arranged on the inner circumferential side of the curved wiring portions 5A, 5B. The end 17Aa of the inner second side wall portion 17A is offset from the end 17Ba of the outer second side wall portion 17B to a position farther from the restricting wall portion 18, i.e., to a position on the negative side in the Y-axis direction. This makes it easier to sandwich the wiring portions 5A and 5B between the second sidewall portions 17A and 17B while bending them.

[0037] As shown in FIG. 5, a guide groove 30 that guides the wiring portion 5A is formed on the main surface 14a of the guide wall portion 14. Here, the wiring portion 5A is routed along the main surface 14a, and thus the wiring portion 5A is guided by the guide groove 30. The guide groove 30 has an arc-shaped curved surface that corresponds to the cylindrical outer peripheral surface of the wiring portion 5A. The main surface 14a is formed with a guide groove 30 that extends in the Z-axis direction at a position corresponding to the guided portion E2. The main surface 14a is also formed with a guide groove 30 that extends in the Y-axis direction at a position corresponding to the guided portion E2. The main surface 14a is also formed with a guide groove 30 that extends in a curved manner near the lower end of the guide wall portion 14, where the wiring portion 5A curves.

[0038] The manufacturing method of the temperature sensor 1 will now be described. First, the temperature measuring element 8 and the wiring portions 5A and 5B are connected and placed on the separator 7 to form an assembly. Next, a filler is filled into the housing portion 11 of the first case portion 6A, and the assembly is housed in the housing portion 11. Next, the wiring portions 5A and 5B are sandwiched between the first side wall portions 16A and 16B and the second side wall portions 17A and 17B of the guide portion 12. This leaves the wiring portions 5A and 5B guided by the guide portion 12 and they are pulled out from the outlet portion 10. Then, the second case portion 6B is molded to cover the first case portion 6A. With the above steps, the temperature sensor 1 is completed.

[0039] Next, the functions and effects of the temperature sensor 1 according to this embodiment will be described.

[0040] In the temperature sensor 1, the case 6 has a guide portion 12 that guides the wiring portions 5A and 5B drawn from the temperature measuring element 8 to the outlet portion 10. That is, the wiring portions 5A and 5B drawn from the temperature measuring element 8 extend through the case 6 toward the outlet portion 10 while being guided by the guide portion 12. The wiring portions 5A and 5B are arranged in a first arrangement direction D1 at the lead-out portion E1, where they are drawn from the temperature measuring element 8. In contrast, the guide portion 12 guides the wiring portions 5A and 5B in a state where they are arranged in a second arrangement direction D2 that is different from the first arrangement direction D1. In this case, the guide portion 12 can form twisted portions (twisted portions TW shown in FIG. 3) in the wiring portions 5A and 5B so as to change the arrangement direction. When such twisted portions are formed, the wiring portions 5A and 5B are less likely to become misaligned. As a result, misalignment of the wiring portions 5A and 5B can be suppressed.

[0041] The wiring portions 5A and 5B may be arranged in the second arrangement direction D2 at the outlet 10. In this case, a twisted portion is formed in the wiring portions 5A and 5B so as to change the arrangement direction between the lead-out portion E1 and the outlet 10. When such a twisted portion is formed, the wiring portions 5A and 5B are less likely to become misaligned.

[0042] Here, with reference to FIG. 6 , the wiring portions 5A and 5B of a temperature sensor according to a comparative example will be described. In the comparative example, the first arrangement direction D1 in the lead-out portion E1 and the second arrangement direction D2 in the guided portion E2 are aligned in the Y-axis direction. In this case, the wiring portions 5A and 5B are likely to be misaligned in the movement direction MD2 in the guided portion E2. Such misalignment can occur during the routing of the wiring portions 5A and 5B or prior to molding the second case portion 6B after the routing. If the second case portion 6B is molded while the wiring portions 5A and 5B are misaligned, the thickness uniformity (design value) between the outer surface of the second case portion 6B and the wiring portions 5A and 5B cannot be maintained. As a result, if an unintended heat source (e.g., a heat source near the wiring portions 5A and 5B) is present in a location other than the vicinity of the temperature measuring element 8, heat may be transferred along the wiring portions 5A and 5B and input to the temperature measuring element 8.

[0043] In contrast, in this embodiment, as shown in FIG. 3 , a twisted portion TW is formed between the lead-out portion E1 and the guided portion E2, making it difficult for the wiring portions 5A and 5B to become misaligned as a whole. Therefore, the problem of uneven thickness of the second case portion 6B due to misalignment can be suppressed, as described above. Even if misalignment occurs in the guided portion E2, the movement direction MD1 can be changed to the Y-axis direction rather than the X-axis direction. For example, if an unintended heat source is likely to be present in the X-axis direction, misalignment of the wiring portions 5A and 5B in the X-axis direction can be suppressed and changed to a direction that has less impact. Furthermore, when the second arrangement direction D2 is the X-axis direction, the first sidewall portions 16A and 16B only need to sandwich one wiring portion, allowing for stable support of the wiring portions 5A and 5B. In other words, when the second arrangement direction D2 is the Y-axis direction, the first sidewall portions 16A and 16B need to sandwich two wiring portions, which may result in unstable support and make insertion difficult.

[0044] The guide portion 12 may have a pair of first side wall portions 16A, 16B that guide the wiring portions 5A, 5B, and a pair of second side wall portions 17A, 17B that guide the pair of wiring portions 5A, 5B in a state in which they extend in a direction different from that of the first side wall portions 16A, 16B. In this case, the guide portion 12 can pull the wiring portions 5A, 5B out of the outlet portion 10 of the case 6 in a direction different from the direction guided by the first side wall portions 16A, 16B.

[0045] The pair of first side wall portions 16A, 16B and the pair of second side wall portions 17A, 17B may sandwich and support the pair of wiring portions 5A, 5B. In this case, the guide portion 12 can sufficiently support the pair of wiring portions 5A, 5B to prevent misalignment.

[0046] The pair of second side walls 17A, 17B may be arranged such that ends 17Aa, 17Ba are offset from each other in the extension direction of the wiring portions 5A, 5B that they are guiding. When the pair of wiring portions 5A, 5B curve so as to be inserted from the first side walls 16A, 16B into the second side walls 17A, 17B, the inner second side wall 17A can smoothly accommodate the curved wiring portions 5A, 5B.

[0047] The guide portion 12 has a main surface 14a, and a guide groove 30 for guiding the wiring portions 5A and 5B may be formed on the main surface 14a. In this case, the wiring portions 5A and 5B can extend while being guided by the guide groove 30, thereby suppressing misalignment of the wiring portions 5A and 5B.

[0048] The case 6 has a first case portion 6A and a second case portion 6B, and the first case portion 6A and the second case portion 6B may have different heat capacities. For example, when the wiring portions 5A, 5B are subjected to thermal fluctuations, the influence of the thermal fluctuations on the temperature measuring element 8 side can be suppressed by adjusting the heat capacity of each case portion 6A, 6B.

[0049] The present invention is not limited to the above-described embodiments.

[0050] For example, the wiring structure of the wiring portions 5A and 5B and the configuration of the case 6 are not limited to those in the above-described embodiment. Furthermore, the configuration of the guide mechanism of the guide portion 12 is not limited to those in the above-described embodiment, and the shape, number, position, etc. of the side wall portions may be changed as appropriate.

[0051] Furthermore, the direction in which the wiring portions 5A and 5B are drawn out from the outlet portion of the case 6 is not limited to the above embodiment, and they may be drawn out to the positive side of the Y-axis direction or in other directions. Furthermore, in the above embodiment, the twisted portion TW is formed in one location, but the twisted portion TW may be formed in multiple locations (for example, between the guided portion E2 and the guided portion E3). [Explanation of symbols]

[0052] 1...temperature sensor, 5A, 5B...wiring section, 6...case, 8...temperature measuring element, 10...outlet section, 12...guide section, 14a...main surface, 16A, 16B...first side wall section, 17A, 17B...second side wall section, E1...drawing section, 30...guide groove.

Claims

1. a temperature measuring element for measuring temperature; A pair of wiring portions connected to the temperature measuring element; a case that houses the temperature measuring element and the pair of wiring portions and that allows the wiring portions to exit to the outside through an outlet portion, the case has a guide portion that guides the pair of wiring portions drawn out from the temperature measuring element to the outlet portion, the pair of wiring portions are arranged in a first arrangement direction at lead-out portions that are portions that are led out from the temperature measuring element and extend along a first extension direction, the guide portion guides the pair of wiring portions in a state where the wiring portions are arranged in a second arrangement direction different from the first arrangement direction; A temperature sensor in which the guided portion, which is the portion of the pair of wiring portions that is guided by the guide portion, extends from the end of the pull-out portion along a second extension direction that intersects the first extension direction and intersects the first arrangement direction.

2. The temperature sensor according to claim 1 , wherein the pair of wiring portions are arranged in the second arrangement direction at the outlet portion.

3. A temperature measuring element for measuring temperature; A pair of wiring portions connected to the temperature measuring element; a case that houses the temperature measuring element and the pair of wiring portions and that allows the wiring portions to exit to the outside through an outlet portion, the case has a guide portion that guides the pair of wiring portions drawn out from the temperature measuring element to the outlet portion, the pair of wiring portions are arranged in a first arrangement direction at lead-out portions that are portions that are led out from the temperature measuring element and extend along a first extension direction, the guide portion guides the pair of wiring portions in a state where the wiring portions are arranged in a second arrangement direction different from the first arrangement direction; a guided portion of the pair of wiring portions that is guided by the guide portion extends from an end of the lead-out portion along a second extending direction that intersects with the first extending direction, The guide portion is a pair of first sidewall portions that guide the pair of wiring portions; a pair of second sidewall portions that guide the pair of wiring portions that extend in a direction different from the first sidewall portions.

4. The temperature sensor according to claim 3 , wherein at least one of the pair of first sidewall portions and the pair of second sidewall portions sandwich and support the pair of wiring portions.

5. a temperature measuring element for measuring temperature; A pair of wiring portions connected to the temperature measuring element; a case that houses the temperature measuring element and the pair of wiring portions and that allows the wiring portions to exit to the outside through an outlet portion, the case has a guide portion that guides the pair of wiring portions drawn out from the temperature measuring element to the outlet portion, the pair of wiring portions are arranged in a first arrangement direction at lead-out portions that are portions that are led out from the temperature measuring elements, the guide portion guides the pair of wiring portions in a state where the wiring portions are arranged in a second arrangement direction different from the first arrangement direction; The guide portion is a pair of first sidewall portions that guide the pair of wiring portions; a pair of second sidewall portions that guide the pair of wiring portions in a state where the wiring portions extend in a direction different from that of the first sidewall portions; The pair of second side wall portions are arranged such that their ends are offset from each other in the direction in which the wiring portion they are guiding extends.

6. The guide portion has a main surface, 6. The temperature sensor according to claim 1, wherein a guide groove for guiding the wiring portion is formed on the main surface.

7. a temperature measuring element for measuring temperature; A pair of wiring portions connected to the temperature measuring element; a case that houses the temperature measuring element and the pair of wiring portions and that allows the wiring portions to exit to the outside through an outlet portion, the case has a guide portion that guides the pair of wiring portions drawn out from the temperature measuring element to the outlet portion, the pair of wiring portions are arranged in a first arrangement direction at lead-out portions that are portions that are led out from the temperature measuring elements, the guide portion guides the pair of wiring portions in a state where the wiring portions are arranged in a second arrangement direction different from the first arrangement direction; the case has a first case portion and a second case portion; The temperature sensor, wherein the first case portion and the second case portion have different heat capacities.

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