Temperature sensor unit, temperature sensor assembly, and method for assembling a temperature sensor.

Abstract

This invention provides a temperature sensor unit capable of accurately measuring the temperature of an object being measured. [Solution] In the temperature sensor unit 2, the holding member 30 holds the object to be measured 3 and the sensor case 20. The first surface 26a of the sensor case 20 is aligned with the Z-axis direction and faces the object to be measured 3. The side surfaces 26a and 26b are aligned with the Z-axis direction and extend in directions that intersect each other. The heat transfer part 32 faces the temperature sensing element and is in contact with the side surfaces 26a and 26b. The gripping part 31 grips the sensor case 20 and the object to be measured 3 while the sensor case 20 and the object to be measured 3 are in contact. The connecting part 33 connects the heat transfer part 32 and the gripping part 31. The openings β1 and β2 of the holding member 30 are defined by the heat transfer part 32, the gripping part 31 and the connecting part 33. When viewed from a second direction intersecting the first direction, the sensor case 20 is exposed from the holding member 30 at the openings β1 and β2.

Description

Technical Field

[0004]

[0001] The present invention relates to a temperature sensor unit, an assembly of a temperature sensor, and a method for assembling a temperature sensor.

Background Art

[0002] A temperature sensor unit including a temperature sensor, a sensor case, and a holding member is known (for example, Patent Document 1). The temperature sensor includes a temperature-sensitive element. The temperature sensor is housed in the sensor case. The holding member holds the measurement object and the sensor case.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Depending on the shape of the measurement object, the required shapes of the sensor case and the holding member are different. For accurate temperature detection of the measurement object, it is desirable that the sensor case be accurately positioned with respect to the measurement object. In particular, it is desirable to configure the holding member so that the heat of the measurement object is appropriately conducted to the temperature-sensitive element and to arrange the temperature-sensitive element at a desired position with respect to the measurement object.

[0005] One aspect of the present invention aims to provide a temperature sensor unit capable of accurately measuring the temperature of a measurement object. Another aspect of the present invention aims to provide an assembly of a temperature sensor capable of accurately measuring the temperature of a measurement object. Still another aspect of the present invention aims to provide a method for assembling a temperature sensor that accurately positions the sensor case with respect to the measurement object so that the temperature of the measurement object can be accurately measured. [[ID=​​

[0006] A temperature sensor unit according to one embodiment comprises a temperature sensor, a sensor case, and a holding member. The temperature sensor includes a temperature sensing element. The sensor case extends in a first direction and houses the temperature sensor. The holding member holds the object to be measured and the sensor case. The sensor case has a first surface, a second surface, and a third surface. The first surface is aligned with the first direction and faces the object to be measured. The second and third surfaces are aligned with the first direction and extend in directions that intersect each other. The holding member includes a heat transfer section, a gripping section, and a connecting section. The heat transfer section faces the temperature sensing element and is in contact with the second and third surfaces. The gripping section grips the sensor case and the object to be measured while they are in contact. The gripping section is separated from the heat transfer section. The connecting section connects the heat transfer section and the gripping section. The holding member has an opening. The opening is defined by a heat transfer section, a gripping section, and a connecting section. When viewed from a second direction intersecting the first direction, the sensor case is exposed from the holding member at the opening.

[0007] In one of the above embodiments, the heat transfer portion of the holding member faces the temperature sensing element and is in contact with the second and third surfaces of the sensor case. The gripping portion grips the sensor case and the object to be measured while they are in contact. The gripping portion is separated from the heat transfer portion. The opening of the holding member is defined by the heat transfer portion, the gripping portion, and the connecting portion when viewed from a second direction intersecting the first direction. The sensor case is exposed from the holding member at the opening. In this case, the gripping portion accurately positions the sensor case relative to the object to be measured, and heat from a desired location on the object to be measured can be transferred to the temperature sensing element through the heat transfer portion.

[0008] In one of the above embodiments, the maximum width of the gripping portion may be greater than the maximum width of the heat transfer portion in the first direction. In this case, the gripping portion more reliably positions the sensor case relative to the object to be measured.

[0009] In one of the above embodiments, the retaining member may include a stopper. The stopper may extend away from the sensor case in a direction intersecting the first direction. The stopper may be in contact with the object to be measured. In this case, the retaining member can be positioned more accurately with respect to the object to be measured.

[0010] In one of the above embodiments, the stopper may be positioned to overlap with the opening in the first direction. In this case, the heat transfer section can be positioned more precisely with respect to the object being measured.

[0011] In one of the above embodiments, the stopper may extend from the gripping portion in a first direction. In the first direction, the length of the stopper may be less than the maximum width of the opening. In this case, the heat transfer portion can be positioned more accurately with respect to the object being measured.

[0012] In one of the above embodiments, the third surface may extend in a direction intersecting the first surface. The heat transfer section may include a first heat transfer section and a second heat transfer section. The first heat transfer section may be in contact with the third surface. The second heat transfer section may be connected to the first heat transfer section. The second heat transfer section may extend along the first surface and away from the sensor case. The second heat transfer section may be in contact with the object to be measured. In this case, heat is appropriately transferred from the object to be measured to the temperature sensing element through the second heat transfer section and the first heat transfer section.

[0013] In one of the above embodiments, the temperature sensor may further include wiring extending in a first direction from the temperature sensing element. The gripping portion may surround the wiring when viewed from the first direction. In this case, the ease of handling of the temperature sensor unit is improved.

[0014] In one of the above embodiments, the sensor case may have an end. At the end, the wiring may protrude to the outside of the sensor case when viewed from a direction perpendicular to the first direction. The end may overlap with the gripping portion when viewed from a direction perpendicular to the first direction. In this case, cracking of the sensor case can be suppressed.

[0015] In one of the above embodiments, the holding member may have a through hole in at least one of the connecting portion and the gripping portion that penetrates in a direction perpendicular to the first direction. The sensor case may include a projection that protrudes from the second or third surface and is inserted into the through hole. In this case, the sensor case can be easily positioned relative to the holding member.

[0016] In one of the above embodiments, in the first direction, the maximum width of the gripping portion may be greater than the maximum width of the opening. In this case, the gripping portion more reliably positions the sensor case relative to the object to be measured.

[0017] In one of the above embodiments, in the first direction, the maximum width of the heat transfer section may be smaller than the maximum width of the opening. In this case, heat from the object to be measured at a desired location is more easily transferred to the temperature sensing element through the heat transfer section.

[0018] In one of the above embodiments, the thermal conductivity of the material forming the heat transfer section may be higher than that of the material forming the sensor case. In this case, heat from the object to be measured at the desired location is more easily transferred to the temperature sensing element through the heat transfer section.

[0019] Another embodiment of the temperature sensor assembly comprises the temperature sensor unit and the object to be measured. In this case, the temperature sensor unit is reliably positioned relative to the object to be measured, and the temperature of the object can be accurately measured.

[0020] In yet another embodiment of the method for assembling a temperature sensor, the sensor case houses a temperature sensor including a temperature sensing element and extends in a first direction. The holding member includes a heat transfer portion, a gripping portion separated from the heat transfer portion, and a connecting portion connecting the heat transfer portion and the gripping portion. The holding member has an opening defined by the heat transfer portion and the gripping portion. The sensor case, the holding member, and the object to be measured are arranged such that the heat transfer portion faces the temperature sensing element and is in contact with the second and third surfaces, the sensor case is exposed from the opening when viewed from the second direction intersecting the first direction, and the sensor case and the object to be measured are in contact. The second and third surfaces of the sensor case extend in directions that are along the first direction and intersect each other. The sensor case and the object to be measured are gripped while the sensor case, the holding member, and the object to be measured are arranged in the above-described positional relationship.

[0021] In one of the other embodiments described above, the sensor case, the holding member, and the object to be measured are arranged such that the heat transfer portion faces the temperature sensing element and is in contact with the second and third surfaces, the sensor case is exposed from the opening, and the sensor case and the object to be measured are in contact. Furthermore, in this positional relationship, the sensor case and the object to be measured are fixed by the holding member. In this case, the sensor case can be accurately positioned relative to the object to be measured so that the temperature of the object can be accurately measured. [Effects of the Invention]

[0022] According to one aspect of the present invention, a temperature sensor unit capable of accurately measuring the temperature of an object to be measured is provided. Another aspect of the present invention provides a temperature sensor assembly capable of accurately measuring the temperature of an object to be measured. Yet another aspect of the present invention provides a method for assembling a temperature sensor that allows the sensor case to be precisely positioned relative to the object to be measured so as to accurately measure the temperature of the object to be measured. [Brief explanation of the drawing]

[0023] [Figure 1] Figure 1 is a perspective view showing an assembly of a temperature sensor according to one embodiment. [Figure 2] Figure 2 is a perspective view showing an assembly of a temperature sensor. [Figure 3] Figure 3 is a perspective view showing an assembly of a temperature sensor. [Figure 4] Figure 4 is a side view showing an assembly of a temperature sensor. [Figure 5] Figure 5 is a cross-sectional view showing an assembly of a temperature sensor. [Figure 6] Figure 6 is a cross-sectional view showing an assembly of a temperature sensor in a modified example of the present embodiment. [Figure 7] Figure 7 is a plan view showing a sensor case. [Figure 8] Figure 8 is a view showing the position of a temperature sensor with respect to a sensor case. [Figure 9] Figure 9 is a perspective view showing a sensor case. [Figure 10] Figure 10 is a perspective view showing an assembly of a temperature sensor according to a modified example of the present embodiment. [Figure 11] Figure 11 is a perspective view showing a sensor case according to a modified example of the present embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals will be used for the same elements or elements having the same function, and redundant descriptions will be omitted.

[0025] Referring to FIGS. 1 to 8, the configuration of an assembly 1 of a temperature sensor according to the present embodiment will be described. Hereinafter, the assembly of the temperature sensor will also be simply referred to as an assembly. FIGS. 1 to 5 are views showing an assembly of a temperature sensor according to one embodiment. The X-axis, Y-axis, and Z-axis extend in directions intersecting each other. In the example shown in the present embodiment, the X-axis direction, Y-axis direction, and Z-axis direction are perpendicular to each other.

[0026] As shown in Figure 1, the assembly 1 includes a temperature sensor unit 2 and an object to be measured 3. For example, the assembly 1 is configured so that the temperature sensor unit 2 and the object to be measured 3 are in contact with each other.

[0027] In the example shown in this embodiment, the object to be measured 3 includes a part to be measured 4 and a support part 5. For example, the part to be measured 4 and the support part 5 each have a rectangular cross-sectional plate column shape. The rectangular cross-section includes shapes with chamfered corners and shapes with rounded corners. For example, the support part 5 is connected perpendicularly to the part to be measured 4, and the object to be measured 3 as a whole has a T-shape in plan view.

[0028] The object to be measured 3 includes a pair of main surfaces 3a, 3b and a pair of side surfaces 3c, 3d, 3g, 3h. The part to be measured 4 includes a pair of main surfaces 3a, 3b located opposite each other in the Y-axis direction and a pair of side surfaces 3c, 3d located opposite each other in the X-axis direction. Each of the pair of side surfaces 3c, 3d connects to the pair of main surfaces 3a, 3b. For example, the Z-axis direction corresponds to the first direction, and the Y-axis direction corresponds to the second direction.

[0029] The part to be measured 4 includes a pair of main surfaces 3a and 2b located opposite each other in the Y-axis direction, and side surfaces 3g and 3h located on the same plane along the XY axes. Each of the pair of side surfaces 3g and 3h connects to the pair of main surfaces 3a and 3b. Side surface 3g and side surface 3c are connected to each other, and side surface 3h and side surface 3d are connected to each other.

[0030] The object to be measured 3 further includes corners 3e and 3f. Corner 3e connects the main surface 3b and the side surface 3c. Corner 3f connects the main surface 3b and the side surface 3d. The object to be measured 3 may have shapes other than those shown. The object to be measured 3 is, for example, a conductive member that functions as a component of another electrical circuit (not shown).

[0031] The temperature sensor unit 2 is attached to the object to be measured 3 and measures the temperature of the object to be measured 3. The temperature sensor unit 2 detects the heat transferred from the object to be measured 3. The temperature sensor unit 2 comprises a temperature sensor 10, a sensor case 20 in which the temperature sensor 10 is housed, and a holding member 30 that holds the sensor case 20. The holding member 30 corresponds to a positioning member that positions the sensor case 20 relative to the object to be measured 3.

[0032] The sensor case 20 includes a main body 21 and a protruding portion 23. The sensor case 20 extends in the Z-axis direction. The temperature sensor 10 is housed in the main body 21 of the sensor case 20. The temperature sensor 10 detects heat transmitted from the outside.

[0033] As shown in Figure 8, the temperature sensor 10 includes a detection unit 11, conductors 12 and 13 connected to two electrodes (not shown) of the detection unit 11, and lead wires 14 and 15 electrically connected to the conductors 12 and 13, respectively. The detection unit 11 corresponds to, for example, a temperature sensing element. The temperature sensing element has, for example, the characteristic that its resistance decreases as the temperature increases. The detection unit 11 is housed inside the sensor case 20. For example, the temperature sensing element includes an NTC (Negative Temperature Coefficient) thermistor element. In this embodiment, the lead wires 14 and 15 correspond to wiring.

[0034] The main body 21 of the sensor case 20 has a rectangular parallelepiped shape. The rectangular parallelepiped shape includes a rectangular parallelepiped with chamfered corners and edges, and a rectangular parallelepiped with rounded corners and edges. The main body 21 extends in the Z-axis direction. The main body 21 has a bottom 21a at one end in the longitudinal direction and a bottom 21b at the other end. The lead wires 14 and 15, which are electrically connected to the detection unit 11, extend from the bottom 21b to the outside of the main body 21. The lead wires 14 and 15 extend from the detection unit 11 in the Z-axis direction and protrude from the bottom 21b. The bottom 21a and bottom 21b correspond to ends that face each other in the Z-axis direction.

[0035] The main body 21 of the sensor case 20 has an outer surface. The outer surface of the main body 21 includes four sides 26a, 26b, 26c, and 26d connected to the bottom 21a. Sides 26a and 26b are located opposite each other in the Y-axis direction. Sides 26c and 26d are located opposite each other in the X-axis direction. Sides 26a and 26b are arranged along the X-axis and Z-axis directions, respectively. Sides 26a and 26b are perpendicular to the Y-axis direction. Sides 26c and 26d intersect with sides 26a and 26b. Sides 26c and 26d are arranged along the Y-axis and Z-axis directions, respectively. Sides 26c and 26d extend in the Y-axis direction. Sides 26c and 26d are perpendicular to the X-axis direction. Side 26d is configured to be in contact with the object to be measured 3. Side 26b corresponds to the first face, side 26a corresponds to the second face, and sides 26c and 26d correspond to the third face.

[0036] Sides 26a, 26b, 26c, and 26d are flat. Sides 26a, 26b, 26c, and 26d are all rectangular in shape when viewed from above. The sensor case 20 further includes corners 26e and 26f. Corner 26e connects side 26a and side 26c. Corner 26f connects side 26a and side 26d.

[0037] In the example shown in this embodiment, the sensor case 20 includes at least one protrusion 23. For example, the sensor case 20 includes one protrusion 23. The protrusion 23 is connected to the side surface 26a of the main body 21. The protrusion 23 projects from the side surface 26a in the Y-axis direction. In other words, the protrusion 23 extends in a direction perpendicular to the side surface 26a.

[0038] The projection 23 includes a through portion 23a and a tip portion 23b. In the example shown in this embodiment, the through portion 23a has a cylindrical shape. Viewed from the Y-axis direction, the through portion 23a has a circular shape, and the tip portion 23b has a concentric circular shape with respect to the through portion 23a. The through portion 23a is connected to the side surface 26a, extends from the side surface 26a, and penetrates the holding member 30. The tip portion 23b is connected to the through portion 23a on the side opposite to the main body portion 21 and forms the tip of the projection 23. As shown in Figures 4 to 6, the tip portion 23b does not come into contact with the holding member 30. As shown in Figure 8, the detection portion 11 does not overlap with the through portion 23a when viewed from the Y-axis direction.

[0039] The holding member 30 positions the sensor case 20 relative to the object to be measured 3. The holding member 30 has a bent plate shape. The thermal conductivity of the material forming the holding member 30 is higher than that of the material forming the sensor case 20. The holding member 30 is made of, for example, metal. In a modified example of this embodiment, the material forming the holding member 30 and the material forming the sensor case 20 may be the same.

[0040] The holding member 30 grips the sensor case 20 and the object to be measured 3 while they are in contact. The holding member 30 includes a gripping portion 31, a heat transfer portion 32, and a connecting portion 33. The metal material used for the holding member 30 is spring-grade phosphor bronze or spring-grade stainless steel.

[0041] The gripping portion 31 grips the sensor case 20 and the support portion 5 of the object to be measured 3 while the sensor case 20 and the object to be measured 3 are in contact. The gripping portion 31 is separated from the heat transfer portion 32. When viewed from the Z-axis direction, the gripping portion 31 surrounds the sensor case 20 and the support portion 5. When viewed from the Z-axis direction, the gripping portion 31 surrounds the lead wires 14 and 15. The bottom portion 21b of the sensor case 20 overlaps with the gripping portion 31 in the Z-axis direction. In other words, when viewed from a direction perpendicular to the Z-axis, the bottom portion 21b of the sensor case 20 overlaps with the gripping portion 31.

[0042] The gripping portion 31 includes a first wall portion 31a, a pair of second wall portions 31b, 31c, and a pair of third wall portions 31d, 31e. The first wall portion 31a, the pair of second wall portions 31b, 31c, and the pair of third wall portions 31d, 31e are plate-shaped. The first wall portion 31a faces the side surface 26a of the sensor case 20. The second wall portion 31b faces the side surface 26c of the sensor case 20 and the side surface 3c of the support portion 5. The second wall portion 31c faces the side surface 26c of the sensor case 20 and the side surface 3d of the support portion 5. The pair of third wall portions 31d, 31e face the main surface 3b of the object to be measured 3. In this specification, "facing" means facing each other without any other members shown in this specification in between. For example, "p faces q" means that "p" and "q" are facing each other without any other members shown in this specification in between. In this specification, "facing each other" means facing each other regardless of whether or not there are other members in between.

[0043] The first wall portion 31a is connected to the second wall portion 31b at one end and to the second wall portion 31c at the other end. The first wall portion 31a and the second wall portion 31b form a corner portion C1 at the point where they are connected, and the corner portion 26e of the sensor case 20 is located at this corner portion C1. The first wall portion 31a and the second wall portion 31c form a corner portion C3 at the point where they are connected, and the corner portion 26f of the sensor case 20 is located at this corner portion C3.

[0044] The first wall portion 31a extends along the side surface 26a. The first wall portion 31a is arranged along the X-axis and Z-axis directions. When the gripping portion 31 grips the sensor case 20 and the support portion 5, the first wall portion 31a is in contact with the side surface 26a. The first wall portion 31a and the second wall portion 31b extend in directions that intersect each other. For example, the first wall portion 31a and the second wall portion 31b are perpendicular to each other. The first wall portion 31a and the second wall portion 31c extend in directions that intersect each other. For example, the first wall portion 31a and the second wall portion 31c are perpendicular to each other. The first wall portion 31a has a through hole α. The through hole α penetrates the holding member 30 in a direction perpendicular to the Z-axis direction. The through portion 23a penetrates the through hole α. For example, the first wall portion 31a has one through hole α through which the through portion 23a of one of the protruding portions 23 each penetrate. Viewed from the Y-axis direction, the through-hole α is circular in shape. The tip portion 23b and the first wall portion 31a are separated from each other. As shown in Figures 4 to 6, the tip portion 23b is not in contact with the first wall portion 31a.

[0045] In the direction perpendicular to the direction in which the protrusion 23 protrudes, the minimum width of the tip portion 23b is greater than the minimum width of the through hole α. In the example shown in this embodiment, in the direction perpendicular to the direction in which the protrusion 23 protrudes, the minimum width of the tip portion 23b is greater than the maximum width of the through hole α. In the example shown in this embodiment, the minimum width of the tip portion 23b corresponds to the diameter D1 of the tip portion 23b, and the minimum and maximum widths of the through hole α correspond to the diameter D2 of the through hole α. In the X-axis and Z-axis directions, the diameter of the through portion 23a is smaller than the diameter D2 of the through hole α, and the diameter D1 of the tip portion 23b is larger than the diameter D2 of the through hole α.

[0046] The second wall portion 31b extends along the side surface 26c of the sensor case 20 and the side surface 3c of the support portion 5. The second wall portion 31b is positioned along the Y-axis and Z-axis directions. When the gripping portion 31 grips the sensor case 20 and the support portion 5, the second wall portion 31b is in contact with the side surfaces 26c and 3c. The second wall portion 31b extends from the first wall portion 31a along the Y-axis direction. The second wall portion 31b is connected to the first wall portion 31a at one end and to the third wall portion 31d at the other end. The second wall portion 31b and the third wall portion 31d form a corner portion C2 at the point where they are connected to each other.

[0047] The second wall portion 31c extends along the side surface 26d of the sensor case 20 and the side surface 3d of the object to be measured 3. The second wall portion 31c is positioned along the Y-axis and Z-axis directions. When the gripping portion 31 grips the sensor case 20 and the support portion 5, the second wall portion 31c is in contact with the side surfaces 26d and 3d. The second wall portion 31c extends from the first wall portion 31a along the Y-axis direction. The second wall portion 31c is connected to the first wall portion 31a at one end and to the third wall portion 31e at the other end. The second wall portion 31c and the third wall portion 31e form a corner portion C4 at the point where they are connected to each other.

[0048] In the example shown in this embodiment, the third wall portion 31d is in contact with the main surface 3b. The third wall portion 31d is bent at an acute angle with respect to the second wall portion 31b. A space is formed by the third wall portion 31d, the second wall portion 31b, and the main surface 3b. The corner portion C2 is separated from the object to be measured 3. The third wall portion 31d extends from the second wall portion 31b in the X-axis direction and the Y-axis direction. The third wall portion 31d extends from the second wall portion 31b toward the second wall portion 31c and the first wall portion 31a. The third wall portion 31d includes a tip portion 31g that is in contact with the main surface 3b.

[0049] In the example shown in this embodiment, the third wall portion 31e is in contact with the main surface 3b. The third wall portion 31e is bent at an acute angle with respect to the second wall portion 31c. A space is formed by the third wall portion 31e, the second wall portion 31c, and the main surface 3b. The corner portion C4 is separated from the object to be measured 3. The third wall portion 31e extends from the second wall portion 13b in the X-axis direction and the Y-axis direction. The third wall portion 31e extends from the second wall portion 31c toward the second wall portion 31b and the first wall portion 31a. The third wall portion 31e includes a tip portion 31h that is in contact with the main surface 3b.

[0050] The gripping portion 31 is integrally constructed to surround the sensor case 20 when viewed from the Z-axis direction, and is positioned in the order of third wall portion 31e, second wall portion 31c, first wall portion 31a, second wall portion 31b, and third wall portion 31d. The third wall portion 31e, second wall portion 31c, first wall portion 31a, second wall portion 31b, and third wall portion 31d are continuous in this order. The first wall portion 31a and the third wall portion 31d are separated. In the example shown in this embodiment, the holding member 30 is formed in an annular shape so as to be divided between the third wall portion 31e and the third wall portion 31d when viewed from the Z-axis direction. In the Z-axis direction, the maximum width L4 of the gripping portion 31 is greater than the maximum width L2 of the heat transfer portion 32.

[0051] The heat transfer section 32 transfers heat from the part to be measured 4 to the sensor case 20. The heat transfer section 32 is in contact with the sensor case 20 and the part to be measured 4. The heat transfer section 32 faces the detection section 11. The heat transfer section 32 is in contact with the sides 26a, 26c, and 26d of the sensor case 20. The thermal conductivity of the material forming the heat transfer section 32 is higher than that of the material forming the sensor case 20. The heat transfer section 32 includes first heat transfer sections 32a, 32b, and 32d, and second heat transfer sections 32c and 32e. The first heat transfer sections 32a, 32b, and 32d are in contact with the sensor case 20, and the second heat transfer sections 32c and 32e are in contact with the part to be measured 4 of the object to be measured 3.

[0052] The first heat transfer section 32a faces the side surface 26a of the sensor case 20. The first heat transfer section 32a is connected to the first heat transfer section 32b at one end and to the first heat transfer section 32d at the other end. The first heat transfer section 32a and the first heat transfer section 32b form a corner C5 where they are connected to each other, and the corner 26e of the sensor case 20 is located at this corner C5. The first heat transfer section 32a and the first heat transfer section 32d form a corner C7 where they are connected to each other, and the corner 26f of the sensor case 20 is located at this corner C7.

[0053] The first heat transfer section 32a extends along the side surface 26a. The first heat transfer section 32a is arranged along the X-axis and Z-axis directions. The first heat transfer section 32a is in contact with the side surface 26a. The first heat transfer section 32a and the first heat transfer section 32b extend in directions that intersect each other. For example, the first heat transfer section 32a and the first heat transfer section 32b are perpendicular to each other. The first heat transfer section 32a and the first heat transfer section 32d extend in directions that intersect each other. For example, the first heat transfer section 32a and the first heat transfer section 32d are perpendicular to each other.

[0054] The first heat transfer section 32b extends along the side surface 26c of the sensor case 20. The first heat transfer section 32b is positioned along the Y-axis and Z-axis directions. When the gripping section 31 grips the sensor case 20 and the support section 5, the first heat transfer section 32b is in contact with the side surface 26c. The first heat transfer section 32b extends from the first heat transfer section 32a along the Y-axis direction. The first heat transfer section 32b is connected to the first heat transfer section 32a at one end and to the second heat transfer section 32c at the other end. The first heat transfer section 32b and the second heat transfer section 32c form a corner C6 at the point where they are connected to each other.

[0055] The first heat transfer section 32d extends along the side surface 26d of the sensor case 20. The first heat transfer section 32d is positioned along the Y-axis and Z-axis directions. When the gripping section 31 grips the sensor case 20 and the support section 5, the first heat transfer section 32d is in contact with the side surface 26d. The first heat transfer section 32d extends from the first heat transfer section 32a along the Y-axis direction. The first heat transfer section 32d is connected to the first heat transfer section 32a at one end and to the second heat transfer section 32e at the other end. The first heat transfer section 32d and the second heat transfer section 32e form a corner C8 at the point where they are connected to each other.

[0056] The second heat transfer sections 32c and 32e extend along the main surface 3a of the section to be measured 4. For example, the second heat transfer sections 32c and 32e are located on a virtual plane passing through the side surface 26b. They extend along the main surface 3a of the section to be measured 4. The second heat transfer sections 32c and 32e are arranged along the X-axis and Z-axis directions. The second heat transfer sections 32c and 32e extend in directions along the side surfaces 26a and 26b. The extending direction of the second heat transfer sections 32c and 32e and the extending direction of the first heat transfer section 32a are the same and parallel to each other. When the gripping section 31 grips the sensor case 20 and the support section 5, the second heat transfer sections 32c and 32e make surface contact with the main surface 3a.

[0057] The second heat transfer section 32c extends from the first heat transfer section 32b in a direction away from the sensor case 20. The second heat transfer section 32c extends from the first heat transfer section 32b in a direction away from the first heat transfer section 32a. The second heat transfer section 32e extends from the first heat transfer section 32d in a direction away from the sensor case 20. The second heat transfer section 32e extends from the first heat transfer section 32d in a direction away from the first heat transfer section 32a.

[0058] The connecting portion 33 connects the heat transfer portion 32 and the gripping portion 31. The connecting portion 33 extends in the Z-axis direction along the side surface 26a of the sensor case 20. The connecting portion 33 connects the first heat transfer portion 32a and the first wall portion 31a in the Z-axis direction. The connecting portion 33 is arranged along the X-axis and Z-axis directions. The connecting portion 33 makes surface contact only with the side surface 26a, for example.

[0059] The holding member 30 has openings β1 and β2. Opening β1 is defined by a heat transfer section 32, a gripping section 31, and a connecting section 33. Opening β1 is defined by a first heat transfer section 32b, a second wall section 31b, and a connecting section 33. The sensor case 20 is exposed from the holding member 30 at opening β1. A corner section 26e is exposed at opening β1. Opening β2 is defined by a heat transfer section 32, a gripping section 31, and a connecting section 33. Opening β1 is defined by a first heat transfer section 32d, a second wall section 31c, and a connecting section 33. The sensor case 20 is exposed from the holding member 30 at opening β2. A corner section 26f is exposed at opening β2. Openings β1 and β2 may be slit-shaped.

[0060] In the example shown in this embodiment, the maximum width L2 of the heat transfer section 32 is smaller than the maximum width L1 of each opening β1, β2 in the Z-axis direction. The maximum width L4 of the gripping section 31 is larger than the maximum width L1 of each opening β1, β2 in the Z-axis direction. The maximum width L4 of the gripping section 31 is larger than the maximum width L2 of the heat transfer section 32 in the Z-axis direction. In the Z-axis direction, the maximum width L1 of each opening β1, β2 corresponds to the maximum width of the connecting section 33.

[0061] The holding member 30 has a through hole α in at least one of the connecting portion 33 and the gripping portion 31. The protruding portion 23 protrudes from the side surface 26a or side surfaces 26c, 26d and is inserted into the through hole α.

[0062] The holding member 30 includes a pair of stoppers 42. Each stopper 42 extends away from the sensor case 20 in the X-axis direction and is configured to contact the object to be measured 3. The stoppers 42 are positioned in the Z-axis direction to overlap with the openings β1 and β2 and extend from the gripping portion 31 in the Z-axis direction. In the Z-axis direction, the length L5 of the stoppers 42 is smaller than the maximum width L1 of the openings β1 and β2.

[0063] Next, the method for assembling the temperature sensor will be described. The sensor case 20, the holding member 30, and the object to be measured 3 are arranged in a predetermined positional relationship. In this predetermined positional relationship, the heat transfer part 32 faces the detection part 11 and is in contact with the side surfaces 26a and 26c, 26d, the sensor case 20 is exposed from the openings β1, β2 when viewed from the X-axis direction, and the sensor case 20 and the object to be measured 3 are in contact.

[0064] For example, the sensor case 20 and the retaining member 30 are positioned relative to each other by crimping the protrusion 23. Figure 9 is a perspective view showing the sensor case 20 before crimping. Before crimping, the sensor case 20 includes a protrusion 73. The protrusion 73 protrudes from the side surface 26a in the Y-axis direction. In other words, the protrusion 73 extends in a direction perpendicular to the side surface 26a. The protrusion 73 has a cylindrical shape. When viewed from the Y-axis direction, the protrusion 73 has the same shape as the through portion 73a of the protrusion 73. The protrusion 73 is connected to the side surface 26a at one end and forms an end face 73a at the other end. When viewed from the Y-axis direction, the end face 73a has a circular shape.

[0065] In the crimping process, the protrusion 73 is inserted into the through hole α of the holding member 30, and the tip of the protrusion 73 is crushed by pressing the end face 43a. As a result, the tip 23b of the protrusion 23 is formed, and a temperature sensor unit 2 is created in which the holding member 30 and the sensor case 20 are positioned relative to each other.

[0066] After crimping, the temperature sensor unit 2 and the object to be measured 3 are positioned relative to each other such that the main surface 3a of the object to be measured 3 is in contact with the side surface 26b of the sensor case 20. For example, the temperature sensor unit 2 and the object to be measured 3 are positioned such that the main surface 3a of the object to be measured 3 and the side surface 26b of the sensor case 20 are in contact with each other, and the stopper 42 is in contact with the sides 3g and 3h of the object to be measured 3. As a result, the heat transfer section 32 faces the detection section 11 and is in contact with the sides 26a and 26c, 26d, and the sensor case 20 is exposed from the openings β1 and β2 when viewed from the X-axis direction.

[0067] Next, with the sensor case 20, the holding member 30, and the object to be measured 3 positioned in the predetermined relative positions, the sensor case 20 and the object to be measured 3 are gripped by the gripping portion 31. For example, the third walls 31d and 31e of the gripping portion 31 are bent so that they come into contact with the main surface 3b of the object to be measured 3. In other words, the third walls 31d and 31e of the gripping portion 31 are engaged with the main surface 3b of the object to be measured 3. The temperature sensor is then assembled.

[0068] Next, the configuration of a modified temperature sensor unit will be explained using Figure 10. This modified configuration differs from the embodiment described above in terms of the configuration of the holding member. The differences between the embodiment described above and this modified configuration will be explained below. Figure 6 is a cross-sectional view of the temperature sensor assembly of the modified configuration of this embodiment.

[0069] The temperature sensor assembly 1A includes a temperature sensor unit 2A. The temperature sensor unit 2A includes a sensor case 20, a holding member 60, and a temperature sensor 10. The holding member 60 includes third wall portions 61d and 61e instead of the third wall portions 31d and 31e of the gripping portion 31. The third wall portions 61d and 61e are in surface contact with the main surface 3b of the object to be measured 3. The second wall portion 31b and the third wall portion 61d form a corner portion C2, and the second wall portion 31c and the third wall portion 61e form a corner portion C4. The corners of the object to be measured 3 are located at corner portions C2 and C4, respectively. The third wall portion 61d is bent perpendicular to the second wall portion 31b. The third wall portion 61e is bent perpendicular to the second wall portion 31b. The third wall portion 61d includes a tip portion 61g that is in contact with the main surface 3b. The third wall portion 61e includes a tip portion 61h that is in contact with the main surface 3b.

[0070] Next, the configuration of a modified temperature sensor unit will be described using Figures 10 and 11. This modified configuration differs from the embodiment described above in terms of the configuration of the holding member. The differences between the embodiment described above and this modified configuration will be mainly described below. Figure 10 is a perspective view showing the assembly of the temperature sensor of the modified configuration of this embodiment. Figure 11 is a perspective view showing the sensor case before crimping.

[0071] The temperature sensor assembly 1B includes a temperature sensor unit 2B. The temperature sensor unit 2B includes a sensor case 20B instead of a sensor case 20, and a retaining member 80 instead of a retaining member 30. The sensor case 20B includes a protrusion 88 instead of a protrusion 23 of the sensor case 20. The protrusion 88 is formed by crimping.

[0072] In this modified example, the sensor case 20B includes one protrusion 88. The sensor case 20B differs from the sensor case 20 only in the protrusion 88. The protrusion 88 differs from the sensor case 20 only in its shape and arrangement. The protrusion 88 includes a tip portion 88b corresponding to the tip portion 23b. In this modified example, the protrusion 88 has an elliptical shape when viewed from the Y-axis direction. In the sensor case 20B, the protrusion 88 is located in the center of the side surface 26a when viewed from the Y-axis direction. In the protrusion 88, the maximum width in the Z-axis direction is greater than the maximum width in the X-axis direction.

[0073] The holding member 80 differs from the holding member 30 only in the shape and arrangement of the through-holes α. In this modified example, the through-holes α are formed not only in the gripping portion 81, but also extending across the gripping portion 81, the heat transfer portion 82, and the connecting portion 83. The detection portion 11 includes a portion that does not overlap with the protruding portion 88 when viewed from the Y-axis direction. The holding member 80 includes the gripping portion 81, the heat transfer portion 82, and the connecting portion 83, respectively, instead of the gripping portion 31, the heat transfer portion 32, and the connecting portion 33. When viewed from the Y-axis direction, the through-holes α of the holding member 80 are elliptical in shape. One protruding portion 88 penetrates through one through-hole α.

[0074] Before crimping, the protrusion 93 is connected to the side surface 26a at one end and forms an end face 93a at the other end. The end face 93a has an elliptical shape when viewed from the Y-axis direction. During crimping, the protrusion 93 is inserted into the through hole α of the retaining member 80, and the tip of the protrusion 93 is crushed by pressing the end face 93a. As a result, the tip portion 88b of the protrusion 88 is formed.

[0075] As described above, the heat transfer portion 32 of the holding member 30 faces the detection portion 11 and is in contact with the sides 26a and 26c, 26d of the sensor case 20. The gripping portion 31 grips the sensor case 20 and the object to be measured 3 while the sensor case 20 and the object to be measured 3 are in contact. The gripping portion 31 is separated from the heat transfer portion 32. The openings β1 and β2 of the holding member 30 are defined by the heat transfer portion 32, the gripping portion 31, and the connecting portion 33 when viewed from the Y-axis direction. The sensor case 20 is exposed from the holding member 30 at the openings β1 and β2. In this case, the gripping portion 31 accurately positions the sensor case 20 relative to the object to be measured 3, and heat from a desired position on the object to be measured 3 can be transferred to the detection portion 11 through the heat transfer portion 32. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0076] In the Z-axis direction, the maximum width L4 of the gripping portion 31 may be greater than the maximum width L2 of the heat transfer portion 32. In this case, the gripping portion 31 more reliably positions the sensor case 20 relative to the object to be measured 3. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0077] The holding member 30 may include a stopper 42. The stopper 42 may extend away from the sensor case 20 in a direction intersecting the Z-axis direction. The stopper 42 may be in contact with the object to be measured 3. In this case, the holding member 30 can be positioned more accurately with respect to the object to be measured 3. Temperature sensor units 2A and 2B have a similar configuration and provide similar effects.

[0078] The stopper 42 may be positioned in the Z-axis direction so as to overlap with the openings β1 and β2. In this case, the heat transfer section 32 can be positioned more accurately with respect to the object to be measured 3. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0079] The stopper 42 may extend from the gripping portion 31 in the Z-axis direction. In the Z-axis direction, the length L5 of the stopper 42 may be smaller than the maximum width L1 of the openings β1 and β2. In this case, the heat transfer portion 32 can be positioned more accurately with respect to the object to be measured 3. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0080] The side surface 26d of the sensor case 20 may extend in the Y-axis direction. The heat transfer section 32 may include a first heat transfer section 32d and a second heat transfer section 32e. The first heat transfer section 32d may be in contact with the side surface 26d. The second heat transfer section 32e may be connected to the first heat transfer section 32d. The second heat transfer section 32e may extend along the side surface 26b and away from the sensor case 20. The second heat transfer section 32e may be in contact with the object to be measured 3. In this case, heat is appropriately transferred from the object to be measured 3 to the detection section 11 through the second heat transfer section 32e and the first heat transfer section 32d. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0081] The temperature sensor 10 may further include lead wires 14 and 15 extending in the Z-axis direction from the detection unit 11. The gripping unit 31 may surround the lead wires 14 and 15 when viewed from the Z-axis direction. In this case, the ease of handling of the temperature sensor unit 2 is improved. Temperature sensor units 2A and 2B have a similar configuration and provide similar effects.

[0082] The sensor case 20 may have a bottom portion 21b. At the bottom portion 21b, the lead wires 14 and 15 may protrude outside the sensor case 20 when viewed from a direction perpendicular to the Z-axis direction. The bottom portion 21b may overlap with the gripping portion 31 when viewed from a direction perpendicular to the Z-axis direction. In this case, cracking of the sensor case 20 can be suppressed. Temperature sensor units 2A and 2B have a similar configuration and provide similar effects.

[0083] The holding member 30 may have a through hole α in at least one of the connecting portion 33 and the gripping portion 31 that penetrates in a direction perpendicular to the Z-axis direction. The sensor case 20 may include a protruding portion 23 that protrudes from the side surface 26a or side surface 26d and is inserted into the through hole α. In this case, the positioning of the sensor case 20 relative to the holding member 30 can be easily performed. Temperature sensor units 2A and 2B have a similar configuration and provide similar effects.

[0084] In the Z-axis direction, the maximum width L4 of the gripping portion 31 may be greater than the maximum width L1 of the openings β1 and β2. In this case, the gripping portion 31 more reliably positions the sensor case 20 relative to the object to be measured 3. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0085] In the Z-axis direction, the maximum width L2 of the heat transfer section 32 may be smaller than the maximum width L1 of the openings β1 and β2. In this case, heat from the object to be measured 3 at the desired position is more easily transferred to the detection section 11 through the heat transfer section 32. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0086] The thermal conductivity of the material forming the heat transfer section 32 may be higher than that of the material forming the sensor case 20. In this case, heat from the object to be measured 3 at the desired location is more easily transferred to the detection section 11 through the heat transfer section 32. Temperature sensor units 2A and 2B have a similar configuration and produce similar effects.

[0087] While embodiments of the present invention have been described above, the present invention is not necessarily limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention. For example, at least two of the configurations of the temperature sensor units 2, 2A, and 2B may be combined. Also, the shape of the object to be measured 3 is not limited to a T-shape.

[0088] In the embodiment described above, the maximum width L2 of the heat transfer section 32 is smaller than the maximum width L1 of each opening β1, β2 in the Z-axis direction. However, the maximum width L2 of the heat transfer section 32 may be larger than the maximum width L1 of each opening β1, β2 in the Z-axis direction.

[0089] The second wall portions 31b and 31c do not need to be in contact with the sides 26c and 26d of the sensor case 20. The second wall portions 31b and 31c do not need to be in contact with the sides 3c and 3d of the object to be measured 3.

[0090] As can be seen from the above-described embodiments and modifications, this specification includes the following embodiments. (Note 1) A temperature sensor containing a temperature sensing element, A sensor case extending in the first direction and housing the temperature sensor The device comprises a holding member that holds the object to be measured and the sensor case, The sensor case has a first surface that is aligned with the first direction and faces the object to be measured, and a second surface and a third surface that are aligned with the first direction and extend in directions that intersect each other. The aforementioned retaining member is The sensor includes a heat transfer portion that faces the temperature sensing element and is in contact with the second and third surfaces, a gripping portion that grips the sensor case and the object to be measured while the sensor case and the object to be measured are in contact and is separated from the heat transfer portion, and a connecting portion that connects the heat transfer portion and the gripping portion. A temperature sensor unit defined by the heat transfer portion, the gripping portion, and the connecting portion, and having an opening in which the sensor case is exposed from the holding member when viewed from a second direction intersecting the first direction. (Note 2) The temperature sensor unit as described in Appendix 1, wherein, in the first direction, the maximum width of the gripping portion is greater than the maximum width of the heat transfer portion. (Note 3) The temperature sensor unit according to Appendix 1 or Appendix 2, wherein the holding member extends away from the sensor case in a direction intersecting the first direction and further includes a stopper that contacts the object to be measured. (Note 4) The stopper is positioned in the first direction to overlap with the opening, as described in Appendix 3 of the temperature sensor unit. (Note 5) The stopper extends from the gripping portion in the first direction, In the first direction, the length of the stopper is smaller than the maximum width of the opening, as described in Appendix 3 or Appendix 4 of the temperature sensor unit. (Note 6) The third surface extends in a direction intersecting the first surface, The heat transfer section is The first heat transfer section in contact with the third surface, A temperature sensor unit according to any one of the appendices 1 to 5, comprising: a second heat transfer section connected to the first heat transfer section, extending along the first surface and away from the sensor case, and in contact with the object to be measured. (Note 7) The temperature sensor further includes wiring extending from the temperature sensing element in the first direction, The gripping portion is a temperature sensor unit as described in any one of the appendices 1 to 5, which surrounds the wiring when viewed from the first direction. (Note 8) The sensor case has an end on which the wiring protrudes to the outside of the sensor case when viewed from a direction perpendicular to the first direction. The temperature sensor unit as described in Appendix 7, wherein the end portion overlaps with the gripping portion when viewed from a direction perpendicular to the first direction. (Note 9) The holding member has a through hole in at least one of the connecting portion and the gripping portion that penetrates in a direction perpendicular to the first direction, The temperature sensor unit according to any one of the appendices 1 to 8, wherein the sensor case includes a projection that protrudes from the second or third surface and is inserted into the through hole. (Note 10) The temperature sensor unit according to any one of the appendices 1 to 9, wherein, in the first direction, the maximum width of the gripping portion is greater than the maximum width of the opening. (Note 11) The temperature sensor unit according to any one of the appendices 1 to 10, wherein, in the first direction, the maximum width of the heat transfer section is smaller than the maximum width of the opening. (Note 12) The temperature sensor unit according to any one of the appendices 1 to 11, wherein the thermal conductivity of the material forming the heat transfer section is higher than that of the material forming the sensor case. (Note 13) A temperature sensor unit described in any one of the appendices 1 to 12, A temperature sensor assembly comprising the aforementioned object to be measured. (Note 14) A sensor case containing a temperature sensor including a temperature sensing element and extending in a first direction; a holding member including a heat transfer portion, a gripping portion separated from the heat transfer portion, and a connecting portion connecting the heat transfer portion and the gripping portion, and having an opening defined by the heat transfer portion and the gripping portion; and an object to be measured are arranged such that the heat transfer portion faces the temperature sensing element and is in contact with the second and third surfaces of the sensor case that are aligned with the first direction and extend in directions intersecting each other, and the sensor case is exposed from the opening when viewed from the second direction intersecting the first direction, and the sensor case and the object to be measured are in contact with each other. A method for assembling a temperature sensor, comprising: gripping the sensor case and the object to be measured with the gripping portion while the sensor case, the holding member, and the object to be measured are arranged in the aforementioned positional relationship. [Explanation of symbols]

[0091] 1,1A,1B...Assembly, 2,2A,2B...Temperature sensor unit, 3...Object to be measured, 10...Temperature sensor, 14,15...Lead wire, 20,20B...Sensor case, 23,73,88,93...Protruding part, 26a,26b,26c,26d...Side, 30,60,80...Holding member, 31,81...Gripping part, 32,82...Heat transfer part, 32a,32b,32d...First heat transfer part, 32c,32e...Second heat transfer part, 33,83...Connecting part, 42...Stopper, L1,L2,L4...Maximum width, α...Through hole, β1,β2...Opening.

Claims

1. A temperature sensor containing a temperature sensing element, A sensor case extending in the first direction and housing the temperature sensor, The device comprises a holding member that holds the object to be measured and the sensor case, The sensor case has a first surface that is aligned with the first direction and faces the object to be measured, and a second surface and a third surface that are aligned with the first direction and extend in directions that intersect each other. The aforementioned retaining member is The sensor includes a heat transfer portion that faces the temperature sensing element and is in contact with the second and third surfaces, a gripping portion that grips the sensor case and the object to be measured while the sensor case and the object to be measured are in contact and is separated from the heat transfer portion, and a connecting portion that connects the heat transfer portion and the gripping portion. A temperature sensor unit defined by the heat transfer portion, the gripping portion, and the connecting portion, and having an opening in which the sensor case is exposed from the holding member when viewed from a second direction intersecting the first direction.

2. The temperature sensor unit according to claim 1, wherein in the first direction, the maximum width of the gripping portion is greater than the maximum width of the heat transfer portion.

3. The temperature sensor unit according to claim 1, wherein the holding member extends away from the sensor case in a direction intersecting the first direction and further includes a stopper that contacts the object to be measured.

4. The temperature sensor unit according to claim 3, wherein the stopper is positioned to overlap with the opening in the first direction.

5. The stopper extends from the gripping portion in the first direction, The temperature sensor unit according to claim 3, wherein in the first direction, the length of the stopper is smaller than the maximum width of the opening.

6. The third surface extends in a direction intersecting the first surface, The heat transfer section is The first heat transfer section in contact with the third surface, The temperature sensor unit according to claim 1, comprising: a second heat transfer section connected to the first heat transfer section, extending along the first surface and away from the sensor case, and in contact with the object to be measured.

7. The temperature sensor further includes wiring extending from the temperature sensing element in the first direction, The gripping portion surrounds the wiring when viewed from the first direction, as described in claim 1, for the temperature sensor unit.

8. The sensor case has an end on which the wiring protrudes to the outside of the sensor case when viewed from a direction perpendicular to the first direction. The temperature sensor unit according to claim 7, wherein the end portion overlaps with the gripping portion when viewed from a direction perpendicular to the first direction.

9. The holding member has a through hole in at least one of the connecting portion and the gripping portion that penetrates in a direction perpendicular to the first direction, The temperature sensor unit according to claim 1, wherein the sensor case includes a protruding portion that protrudes from the second surface or the third surface and is inserted into the through hole.

10. The temperature sensor unit according to claim 1, wherein in the first direction, the maximum width of the gripping portion is greater than the maximum width of the opening.

11. The temperature sensor unit according to claim 1, wherein in the first direction, the maximum width of the heat transfer section is smaller than the maximum width of the opening.

12. The temperature sensor unit according to claim 1, wherein the thermal conductivity of the material forming the heat transfer section is higher than that of the material forming the sensor case.

13. A temperature sensor unit according to any one of claims 1 to 12, A temperature sensor assembly comprising the aforementioned object to be measured.

14. A sensor case containing a temperature sensor including a temperature sensing element and extending in a first direction; a holding member including a heat transfer portion, a gripping portion separated from the heat transfer portion, and a connecting portion connecting the heat transfer portion and the gripping portion, and having an opening defined by the heat transfer portion and the gripping portion; and an object to be measured are arranged such that the heat transfer portion faces the temperature sensing element and is in contact with the second and third surfaces of the sensor case that are aligned with the first direction and extend in directions intersecting each other, and the sensor case is exposed from the opening when viewed from the second direction intersecting the first direction, and the sensor case and the object to be measured are in contact with each other. A method for assembling a temperature sensor, comprising: gripping the sensor case and the object to be measured with the gripping part, while the sensor case, the holding member, and the object to be measured are arranged in the aforementioned positional relationship.

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