JP2018105643A - Temperature sensor unit - Google Patents

Abstract

A temperature sensor unit capable of detecting temperature with high accuracy while having a simple configuration is provided. A positioning member (130) is connected to a gripping part (132) for gripping an object (160) to be measured, and the gripping part (132). and a first urging portion 131 that urges the sensor case 120 toward the measurement object 160 in the state where the sensor case 120 is being measured. The grip portion 132 has a base portion 134 and a second biasing portion 135 that biases the measurement object 160 toward the base portion 134 . The base portion 134 contacts the sensor case 120 in a state in which the first biasing portion 131 biases the sensor case 120 toward the measurement object 160 , so that the first biasing portion 131 biases the sensor case 120 . It regulates the movement of the sensor case 120 in the direction perpendicular to the direction of urging. [Selection drawing] Fig. 1

Description

  The present invention relates to a temperature sensor unit.

  There is known a temperature sensor unit including a temperature sensor, a sensor case in which the temperature sensor is accommodated, and a positioning member that positions the sensor case with respect to a measurement object (for example, Patent Document 1).

JP 2011-259549 A

  In the temperature sensor unit described in Patent Literature 1, the measurement object and the sensor case are not in contact with each other while the sensor case is positioned on the measurement object. For this reason, there exists a possibility that the temperature of a measurement object cannot be measured correctly. In the temperature sensor unit described in Patent Document 1, although the sensor case is positioned on the measurement object, the position of the sensor case may be shifted in the longitudinal direction of the sensor case. Even when the position of the sensor case is shifted, there is a possibility that the temperature of the measurement object cannot be measured accurately.

  An object of this invention is to provide the temperature sensor unit which can measure temperature correctly.

  A temperature sensor unit according to the present invention includes a temperature sensor, a sensor case in which the temperature sensor is accommodated, and a positioning member that positions the sensor case with respect to the measurement object. A first gripping portion that is connected to the gripping portion and that biases the sensor case toward the measurement target in a state where the measurement target gripped by the gripping portion and the sensor case are in contact with each other. An urging portion, the gripping portion has a base, and a second urging portion that urges the measurement object toward the base, and the first urging portion is a measurement target. In a state where the sensor case is urged toward the object, the movement of the sensor case in a direction orthogonal to the direction in which the first urging portion urges the sensor case is regulated by contacting the sensor case.

  In the temperature sensor unit according to the present invention, the first biasing unit biases the sensor case toward the measurement object in a state where the measurement object gripped by the gripping part and the sensor case are in contact with each other. . Since the measurement object is in contact with the sensor case, the temperature of the measurement object is accurately measured.

  In the temperature sensor unit according to the present invention, the base part restricts the movement of the sensor case in a direction orthogonal to the direction in which the first urging unit urges the sensor case. For this reason, the position of the sensor case with respect to the measurement object is difficult to shift. As a result, since the temperature measurement position by the temperature sensor is accurately determined, the temperature of the measurement object can be measured more accurately.

  The base portion may be located between the first urging portion and the second urging portion as seen from a direction orthogonal to the direction in which the first urging portion urges the sensor case. In this case, the temperature sensor unit can be configured compactly.

  An opening in which the sensor case is arranged is formed in the base, and the movement of the sensor case is regulated by contacting the sensor case arranged in the opening in different directions at the edges that define the opening. A plurality of regulating surfaces may be formed. In this case, the movement of the sensor unit is further restricted.

  The base may be formed with an insertion opening for the sensor case that is continuous with the opening. In this case, the sensor case can be easily inserted into and removed from the positioning member and the measurement object. Therefore, handling of the temperature sensor unit is easy.

  The sensor case may have a protrusion that protrudes in a direction orthogonal to the direction in which the first urging portion urges the sensor case. The base is orthogonal to the direction in which the first urging portion urges the sensor case and the direction in which the protrusion protrudes in a state where the first urging portion urges the sensor case toward the measurement object. You may have a contact surface which controls the movement of a sensor case by contact | abutting with the protrusion part of a sensor case by a direction. In this case, the base portion can regulate the movement of the sensor case in the direction perpendicular to the direction in which the first urging portion urges the sensor case and the direction in which the protruding portion protrudes with a compact configuration. For this reason, although it is a compact structure, the position of the sensor case with respect to the measurement object is more difficult to shift.

  It has a connection part which connects a base and the 2nd energizing part, and one of a base and the 2nd energizing part is from the edge located in the opposite side to a connection part side, and a base and a 2nd energizing part You may have the protrusion part which protrudes toward the other. In this case, it is difficult for the positioning member to be displaced with respect to the measurement object by the protrusion portion coming into contact with the measurement object. For this reason, since the temperature measurement position by the temperature sensor is accurately determined, the temperature of the measurement object is more accurately measured.

  The sensor case has a protrusion that protrudes in a direction orthogonal to the direction in which the first urging portion urges the sensor case, and the base urges the sensor case toward the object to be measured by the first urging portion. In the state of being biased, the movement of the sensor case is regulated by contacting the sensor case protrusion in a direction perpendicular to the direction in which the first biasing part biases the sensor case and the direction in which the protrusion protrudes. And a second urging portion that is connected to the second urging portion, and protrudes toward the second urging portion from an edge located on the opposite side of the second urging portion. The protrusion of the base is inclined with respect to the surface including the contact surface that comes into contact with the measurement object, and the first biasing part attaches the sensor case toward the measurement object. In the biased state, the protrusion of the sensor case is between the protruding portion of the base and the first biasing portion. It may be location. In this case, the base portion can regulate the movement of the sensor case in the direction perpendicular to the direction in which the first urging portion urges the sensor case and the direction in which the protrusion of the sensor case protrudes with a compact configuration. . When the protruding portion of the base abuts on the measurement object, the possibility that the positioning member is displaced with respect to the measurement object can be reduced. The region where the protrusion of the sensor case is located and the protrusion of the base can be easily formed.

  The sensor case has a first abutting portion on a side contacting the first urging portion, and the first urging portion urges the sensor case toward the measurement object. In the state, the first urging portion may have a second abutting portion that regulates the movement of the sensor case by abutting the first abutting portion in a direction orthogonal to the direction of urging the sensor case. Good. In this case, the positioning member can regulate the movement of the sensor case in a direction orthogonal to the direction in which the first urging portion urges the sensor case with a compact configuration.

  The sensor case includes a first surface that contacts the first urging portion and a first urging portion on the measurement object in a state where the first urging portion urges the sensor case toward the measurement object. In a state in which the sensor case is biased toward the sensor case, the sensor case may include a second surface that comes into contact with the measurement object and a protrusion that protrudes from a surface including the second surface. In this case, the protrusion can be brought into contact with the edge of the measurement object. For this reason, the movement of the sensor case in a direction parallel to the second surface can be restricted.

  The base portion is in contact with a protrusion protruding from a surface including the second surface in a direction parallel to the second surface in a state where the first biasing portion biases the sensor case toward the measurement object. Thus, it may have a regulating surface that regulates the movement of the sensor case. In this case, if the third surface is in contact with the edge of the object to be measured, the displacement of the sensor case is reduced by the base, and the displacement of the positioning member is also reduced.

  The positioning member may be a metal. In this case, the temperature of the measurement object is easily transmitted to the sensor case.

  At least one of the first and second urging portions may constitute a leaf spring. In this case, the contact area between the first urging portion or the second urging portion and the sensor case is wide. For this reason, the position of the sensor case with respect to the measurement object is more difficult to shift. When the urging portion is made of metal, the temperature of the measurement object is more easily transmitted to the sensor case.

  At least one of the first and second urging portions includes a proximal end portion located on a side connected to the base portion, a distal end portion located on the side opposite to the side connected to the base portion, and a proximal end portion You may have the 1st leaf | plate spring part extended to the front-end | tip part side while being connected, and the 2nd leaf | plate spring part extended to the base end part side while being connected to the front-end | tip part. In this case, since the sensor case is biased by the first leaf spring portion and the second leaf spring portion having different action points, the position of the sensor case with respect to the measurement object is more difficult to shift.

  The sensor case may be detachable between the measurement object and the first urging unit in a state where the measurement object is held by the holding part. In this case, the temperature sensor unit can be easily handled.

  ADVANTAGE OF THE INVENTION According to this invention, the temperature sensor unit which can detect temperature with high precision can be provided.

It is a perspective view which shows the temperature measurement unit which concerns on 1st Embodiment. It is a figure for demonstrating the structure of a temperature sensor. It is a perspective view of a sensor case. It is a perspective view of a sensor case. It is a perspective view of a positioning member. It is a perspective view of a positioning member. It is a perspective view of a positioning member. It is sectional drawing of a temperature measurement unit. It is a figure for demonstrating the attachment process of a positioning member. It is a figure for demonstrating the attachment process of a positioning member. It is a figure for demonstrating the attachment process of a sensor case. It is a perspective view which shows the temperature measurement unit which concerns on 2nd Embodiment. It is a perspective view of a sensor case. It is a perspective view of a sensor case. It is a perspective view of a positioning member. It is a perspective view of a positioning member. It is a perspective view of a positioning member. It is sectional drawing of a temperature measurement unit. It is a figure for demonstrating the attachment process of a positioning member. It is a figure for demonstrating the attachment process of a positioning member. It is a figure for demonstrating the attachment process of a sensor case.

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

  First, with reference to FIGS. 1-8, the structure of the temperature measurement unit which concerns on this embodiment is demonstrated. FIG. 1 is a schematic perspective view showing a temperature measurement unit according to this embodiment.

  As shown in FIG. 1, the temperature measurement unit 100 includes a temperature sensor unit 150 and a measurement object 160. The measurement object 160 is a temperature measurement object by the temperature sensor 110. That is, in the temperature measurement unit 100, the temperature sensor unit 150 measures the temperature of the measurement object 160.

  The temperature sensor unit 150 includes a temperature sensor 110, a sensor case 120 in which the temperature sensor 110 is accommodated, and a positioning member 130 that positions the sensor case 120 with respect to the measurement object 160.

  As shown in FIG. 2, the temperature sensor 110 includes a detection unit 110a, conductive wires 110b and 110c connected to two electrodes (not shown) provided in the detection unit 110a, and conductive wires 110b and 110c. Have lead wires 110d and 110e that are electrically connected to each other. For the detection unit 110a, for example, an NTC (Negative Temperature Coefficient) thermistor element having a characteristic that the resistance decreases as the temperature increases is used.

  The sensor case 120 has a bottomed cylindrical shape having a bottom 121 at one end in the longitudinal direction and an opening 122 at the other end. The sensor case 120 is filled with the resin 123 with the temperature sensor 110 inserted from the opening 122. The detection unit 110 a of the temperature sensor 110 is positioned near the bottom 121 of the sensor case 120 by the cured resin 123. Lead wires 110d and 110e that are electrically connected to the detection unit 110a extend from the opening 122 to the outside of the sensor case 120. The sensor case 120 is made of, for example, a thermoplastic resin. The resin 123 is a thermosetting resin such as an epoxy resin.

  The positioning member 130 is made of metal, and includes a biasing portion 131 that applies a biasing force to the sensor case 120, a gripping portion 132 that grips the measurement object 160, and a connecting portion 133 that connects the gripping portion 132 and the biasing portion 131. And have. As the metal that is the material of the positioning member 130, phosphor bronze for spring or stainless steel for spring is used.

  The measurement object 160 is, for example, a conductive member that functions as a component of another electric circuit (not shown). The measurement object 160 has a plate-like portion 161. The positioning member 130 is positioned on the measurement object 160 when the gripping portion 132 grips the plate-shaped portion 161. A notch 162 is formed at the long side edge of the plate-like portion 161. Hereinafter, the longitudinal direction of the plate-like portion 161 is the X-axis direction, the width direction is the Y-axis direction, and the thickness direction is the Z-axis direction.

  The biasing portion 131 of the positioning member 130 biases the sensor case 120 toward the measurement target 160 in a state where the measurement target 160 held by the gripping portion 132 and the sensor case 120 are in contact with each other. That is, the urging unit 131 generates an urging force in the −Z axis direction (the negative direction of the Z axis).

  The gripping part 132 includes a base part 134, a biasing part 135 that biases the measurement object 160 toward the base part 134, and a connecting part 136 that connects the base part 134 and the biasing part 135. The connecting portion 136 is connected to the base portion 134 on the side opposite to the side connected to the connecting portion 133. In the present embodiment, the urging unit 135 generates an urging force in the + Z-axis direction (the positive direction of the Z-axis).

  The biasing portion 131, the base portion 134, and the biasing portion 135 have a substantially rectangular shape and face each other in the Z-axis direction. In the + Z-axis direction, the biasing portion 131, the base portion 134, and the biasing portion 135 are arranged in this order. The urging portion 131 and the urging portion 135 are each composed of base end portions 131a and 135a located on the side connected to the base portion 134, and a tip end portion 131b located on the opposite side to the side connected to the base portion 134. , 135b.

  Each of the urging portion 131 and the urging portion 135 is a projecting piece constituting a leaf spring. The urging portion 131 includes a pair of first leaf spring portions 131c that connect the base end portion 131a and the distal end portion 131b, and a second leaf spring portion 131d that is positioned inside the first leaf spring portion 131c and has a rectangular shape. And have. That is, the second leaf spring portion 131d is surrounded by the base end portion 131a, the distal end portion 131b, and the first leaf spring portion 131c. The second leaf spring portion 131d is connected to the distal end portion 131b and extends toward the proximal end portion 131a. The second leaf spring portion 131d is separated from the base end portion 131a and the first leaf spring portion 131c.

  The urging portion 135 includes a pair of first leaf spring portions 135c that connect the base end portion 135a and the distal end portion 135b, and a second leaf spring portion 135d that is positioned inside the first leaf spring portion 135c and has a rectangular shape. And have. That is, the second leaf spring portion 135d is surrounded by the base end portion 135a, the distal end portion 135b, and the first leaf spring portion 135c. The second leaf spring portion 135d is connected to the distal end portion 135b and extends toward the proximal end portion 135a. The second leaf spring portion 135d is separated from the base end portion 135a and the first leaf spring portion 135c.

  The base portion 134 is positioned between the biasing portion 131 and the biasing portion 135 when viewed from the X-axis direction orthogonal to the −Z-axis direction in which the biasing portion 131 biases the sensor case 120. The base 134 has a contact surface 134 a that comes into contact with the measurement object 160. An opening A is formed in the contact surface 134a.

  In a state where the urging unit 131 urges the sensor case 120 toward the measurement object 160, the sensor case 120 is positioned in the opening A. Therefore, as shown in FIG. 7, the opening A has a shape along the sensor case 120. As shown in FIGS. 5 to 7, the base portion 134 has a plurality of regulating surfaces 134 b, 134 c, 134 d, and 134 e on the edge that defines the opening A. The plurality of regulating surfaces 134b, 134c, 134d, and 134e regulate the movement of the sensor case 120 by abutting with the sensor case 120 located in the opening A in different directions.

  More specifically, in a state where the urging unit 131 urges the sensor case 120 toward the measurement object 160, the regulating surfaces 134b, 134c, 134d, and 134e are respectively in the −X axis direction (X axis Negative direction), -Y-axis direction (negative direction of Y-axis), + Y-axis direction (positive direction of Y-axis), and + X-axis direction (positive direction of X-axis). Therefore, the regulating surfaces 134b, 134c, 134d, and 134e are sensor cases in the −X axis direction, the −Y axis direction, the + Y axis direction, and the + X axis direction that are orthogonal to the direction in which the biasing portion 131 biases the sensor case 120. 120 movements are restricted.

  The base portion 134 has a protruding portion 137 that protrudes toward the urging portion 135 from an edge located on the side opposite to the connecting portion 136 side. The protruding portion 137 is formed by bending a part of the surface including the contact surface 134a toward the biasing portion 135, and is inclined with respect to the surface including the contact surface 134a. With this configuration, the projecting portion 137 has elasticity in the + Z-axis direction in which the biasing portion 135 biases the measurement object 160. The elastic coefficient of the protrusion 137 in the + Z-axis direction is lower than the elastic coefficient of the biasing part 135 in the + Z-axis direction.

  By bending a part of the surface including the contact surface 134a toward the urging portion 135, the protrusion of the sensor case 120 in a state where the urging portion 131 urges the sensor case 120 toward the measurement object 160. A region where the portion 125 is located is also formed. That is, in a state where the urging portion 131 urges the sensor case 120 toward the measurement object 160, the protrusion 125 is positioned between the protruding portion 137 of the base portion 134 and the urging portion 131. A region where the protrusion 125 of the sensor case 120 is located communicates with the opening A.

  As shown in FIGS. 3 and 4, the sensor case 120 has a rectangular parallelepiped shape. The sensor case 120 includes a surface 120 a that contacts the urging unit 131 and a surface 120 b that contacts the measurement object 160 when the urging unit 131 urges the sensor case 120 toward the measurement object 160. Have The rectangular parallelepiped shape includes a rectangular parallelepiped shape in which corners and ridge lines are chamfered and a rectangular parallelepiped shape in which corners and ridge lines are rounded.

  The sensor case 120 has a protrusion 125 that protrudes from the surface 120a in the + Y-axis direction orthogonal to the −Z-axis direction in which the urging portion 131 urges the sensor case 120. That is, the protrusion 125 protrudes in a direction parallel to the surface 120 a and perpendicular to the longitudinal direction of the sensor case 120. The protrusion 125 is disposed in the notch 138 in a state where the urging unit 131 urges the sensor case 120 toward the measurement object 160.

  The protrusion 125 has an abutment surface 125 a that abuts on the regulation surface 134 e when the urging portion 131 urges the sensor case 120 toward the measurement object 160. The abutting surface 125a abuts on the regulating surface 134e in the −Z-axis direction in which the urging portion 131 urges the sensor case 120 and the + X-axis direction orthogonal to the + Y-axis direction in which the protruding portion 125 protrudes. That is, the movement of the sensor case 120 in the + X axis direction is restricted by the contact between the contact surface 125a and the restriction surface 134e.

  Next, the process of attaching the positioning member 130 to the measurement object 160 will be described with reference to FIGS. 9 and 10.

  The positioning member 130 is attached to the measurement object 160 by inserting the measurement object 160 between the base portion 134 and the biasing portion 135 from the side where the notch 162 of the measurement object 160 is provided. It is done. In other words, from the state where the side where the notch 162 of the measuring object 160 is provided between the distal end portion 135b of the urging portion 135 and the protruding portion 137 of the base portion 134, the connecting portion 136 side is reached. The positioning member 130 is attached to the measurement object 160 when the measurement object 160 is pushed into the measurement object 160.

  When the gripping part 132 grips the plate-like part 161 of the measurement object 160, the positioning member 130 is arranged at a position where the notch part 162 and the edge of the gripping part 132 come into contact with each other. Movement in the X-axis direction with respect to the object 160 is restricted. That is, the movement of the positioning member 130 in the X-axis direction is restricted by the edge of the gripping part 132 coming into contact with the notch 162 of the measurement object 160.

  The protruding portion 137 has a lower elastic modulus than the biasing portion 135 in the direction opposite to the direction in which the protruding portion 137 protrudes. For this reason, the protrusion 137 moves away from the measurement target 160 in the process in which the measurement target 160 is gripped by the gripping part 132 (the process in which the measurement target 160 is inserted between the base 134 and the biasing part 135). It receives force in the + Z-axis direction and bends toward the biasing portion 131 side.

  When the side on which the cutout portion 162 of the measurement object 160 is provided is inserted up to the connecting portion 136, the protruding portion 137 loses the force received in the + Z-axis direction from the measurement object 160, and is shown in FIG. Return to the original position. When the protruding portion 137 returns to the original position, the positioning member 130 is restricted from moving in the + Y-axis direction with respect to the measuring object 160 when the protruding portion 137 contacts the measuring object 160.

  Next, with reference to FIGS. 1 and 11, a process of attaching the sensor case 120 to the measurement object 160 held by the positioning member 130 and the holding part 132 will be described.

  The sensor case 120 is inserted between the urging portion 131 and the base portion 134 in a state where the protruding portion 125 is opposed to the connecting portion 133 and is further moved to the connecting portion 133 side, so that the sensor case 120 is accommodated in the opening A. It is attached to the positioning member 130 and the measurement object 160. In other words, the sensor case 120 is moved to the connecting portion 133 side from the state where the protruding portion 125 of the sensor case 120 is provided between the tip 131b of the biasing portion 131 and the connecting portion 136. By being pushed in, the sensor case 120 is attached to the positioning member 130 and the measurement object 160. With such a structure, the positioning member 130 can insert and remove the sensor case 120 between the measurement object 160 held by the holding unit 132 and the urging unit 131.

  When the sensor case 120 is disposed in the opening A, the protrusion 125 is positioned in a notch 138 formed by cutting and bending a part of the surface including the contact surface 134a of the base 134. For this reason, movement of the sensor case 120 in the + X-axis direction is regulated by the contact between the contact surface 125a of the protrusion 125 and the regulation surface 134e.

  When the sensor case 120 is disposed in the opening A, the first leaf spring portion 131c and the second leaf spring portion 131d apply a biasing force to the surface 120a of the sensor case 120 at different positions.

  As described above, in the temperature sensor unit 150, the urging unit 131 faces the measurement object 160 in a state where the measurement object 160 held by the holding part 132 and the sensor case 120 are in contact with each other. The sensor case 120 is energized. Since the measurement object 160 and the sensor case 120 are in contact with each other, the temperature of the measurement object 160 is accurately measured.

  In the temperature sensor unit 150, the base 134 regulates the movement of the sensor case 120 in a direction orthogonal to the direction in which the urging unit 131 urges the sensor case 120. For this reason, the position of the sensor case with respect to the measurement object 160 is difficult to shift. As a result, since the temperature measurement position by the temperature sensor 110 is accurately determined, the temperature of the measurement object 160 is more accurately measured.

  The base portion 134 is positioned between the urging portion 131 and the urging portion 135 when viewed from the X-axis direction orthogonal to the direction in which the urging portion 131 urges the sensor case 120. For this reason, the temperature sensor unit 150 can be comprised compactly.

  The base 134 is formed with an opening A in which the sensor case 120 is disposed. A plurality of regulating surfaces 134b, 134c, 134d, and 134e are provided at the edge that defines the opening A. The plurality of regulating surfaces 134b, 134c, 134d, and 134e regulate the movement of the sensor case 120 by coming into contact with the sensor case 120 located in the opening A in different directions. For this reason, the movement of the sensor case 120 is further restricted.

  The contact surface 125 a of the protrusion 125 of the sensor case 120 biases the sensor case 120 by the biasing portion 131 when the biasing portion 131 biases the sensor case 120 toward the measurement target 160. The contact with the regulating surface 134e is made in the −X-axis direction and the + X-axis direction orthogonal to the + Y-axis direction from which the protrusion 125 protrudes. For this reason, the base part 134 can regulate the movement of the sensor case 120 in a direction orthogonal to the direction in which the biasing part 131 biases the sensor case 120 and the direction in which the protruding part 125 protrudes with a compact configuration. . Therefore, the position of the sensor case with respect to the measurement object 160 is more difficult to shift while having a compact configuration.

  The base 134 has a protrusion 137. For this reason, when the protrusion 137 contacts the measurement object 160, the positioning member 130 is not easily displaced with respect to the measurement object 160. Therefore, since the temperature measurement position by the temperature sensor is accurately determined, the temperature of the measurement object 160 is more accurately measured.

  The protrusion 137 has elasticity in the direction in which the urging unit 135 urges the measurement object 160, and is lower than the urging unit 135 in the + Z-axis direction in which the urging unit 135 urges the measurement object 160. Has an elastic modulus. For this reason, the operation of attaching the measuring object 160 to the positioning member 130 can be facilitated without reducing the urging force of the urging unit 135.

  The protruding portion 137 of the base portion 134 is inclined with respect to the surface including the contact surface 134a. In a state where the urging portion 131 urges the sensor case 120 toward the measurement object 160, the protrusion 125 of the sensor case 120 is located between the protruding portion 137 of the base portion 134 and the urging portion 135. . Therefore, the protruding portion 137 is formed by bending a part of the surface including the contact surface 134a toward the biasing portion 135, so that the region where the protruding portion 125 of the sensor case 120 is located and the protruding portion 137 of the base portion 134 are formed. And can be formed simultaneously. Therefore, manufacture is easy.

  The positioning member 130 is made of metal. For this reason, the temperature of the measurement object 160 is easily transmitted to the sensor case 120.

  The urging portion 131 and the urging portion 135 constitute a leaf spring. For this reason, the contact area of the urging portion 131 and the urging portion 135 and the sensor case 120 is wide. The positioning member 130 is not easily displaced with respect to the measurement object 160. Since the urging unit 131 is made of metal, the temperature of the measurement object 160 is more easily transmitted to the sensor case 120.

  The urging portion 131 and the urging portion 135 include first plate spring portions 131c and 135c and second plate spring portions 131d and 135d. For this reason, since the sensor case 120 is urged by the first leaf spring portions 131c and 135c and the second leaf spring portions 131d and 135d having different action points, the position of the sensor case 120 with respect to the measurement object 160 is more difficult to shift. .

  The sensor case 120 can be inserted / removed between the measurement object 160 and the biasing part 131 in a state where the measurement object 160 is held by the holding part 132. For this reason, handling of the temperature sensor unit 150 is easy.

The measurement object 160 has a notch 162 that regulates the movement of the positioning member 130 by contacting the edge of the grip 132. For this reason, the possibility that the positioning member 130 is displaced with respect to the measurement object 160 is reduced. As a result, since the temperature measurement position by the temperature sensor 110 is accurately determined, the temperature of the measurement object 160 is more accurately measured.
[Second Embodiment]

  First, the configuration of the temperature measurement unit according to the present embodiment will be described with reference to FIGS. FIG. 12 is a schematic perspective view showing the temperature measurement unit according to the present embodiment. Hereinafter, the longitudinal direction of the plate-like portion 161 is the X-axis direction, the width direction is the Y-axis direction, and the thickness direction is the Z-axis direction.

  As shown in FIG. 12, the temperature measurement unit 200 includes a temperature sensor unit 250 and a measurement object 160. In the temperature measurement unit 200, the temperature sensor unit 250 measures the temperature of the measurement object 160.

  The temperature sensor unit 250 includes a temperature sensor 110, a sensor case 220 in which the temperature sensor 110 is accommodated, and a positioning member 230 that positions the sensor case 220 with respect to the measurement object 160.

  The sensor case 220 has a bottomed cylindrical shape having a bottom 221 at one end in the longitudinal direction and an opening 222 at the other end. The sensor case 220 is filled with the resin 123 in a state where the temperature sensor 110 is inserted from the opening 222. The detection unit 110 a of the temperature sensor 110 is positioned near the bottom 221 of the sensor case 220 by the cured resin 123. Lead wires 110d and 110e that are electrically connected to the detection unit 110a extend from the opening 222 to the outside of the sensor case 220. The sensor case 220 is made of, for example, a thermoplastic resin.

  The positioning member 230 is made of metal, and includes a biasing portion 231 that applies a biasing force to the sensor case 220, a gripping portion 232 that grips the measurement object 160, and a connecting portion 233 that connects the gripping portion 232 and the biasing portion 231. And have. As the metal that is the material of the positioning member 230, spring phosphor bronze, spring stainless steel, or the like is used.

  The urging unit 231 of the positioning member 230 urges the sensor case 220 toward the measurement object 160 in a state where the measurement object 160 held by the holding part 232 is in contact with the sensor case 220. That is, the urging unit 231 generates an urging force in the −Z axis direction.

  The gripping part 232 includes a base part 234, a biasing part 235 that biases the measurement object 160 toward the base part 234, and a connecting part 236 that connects the base part 234 and the biasing part 235. The connecting part 236 is connected to the base part 234 on the side opposite to the side connected to the connecting part 233. In the present embodiment, the urging unit 235 generates an urging force in the + Z-axis direction.

  The biasing portion 231, the base portion 234, and the biasing portion 235 have a substantially rectangular shape, and face each other in the Z-axis direction. In the + Z-axis direction, the biasing portion 231, the base portion 234, and the biasing portion 235 are arranged in this order. The urging portion 231 and the urging portion 235 include a base end portion 231a and 235a located on the side connected to the base portion 234, and a tip end portion 231b located on the opposite side to the side connected to the base portion 234, respectively. , 235b.

  Each of the urging unit 231 and the urging unit 235 is a projecting piece constituting a leaf spring. The urging portion 231 includes a pair of first leaf spring portions 231c that connect the base end portion 231a and the distal end portion 231b, and a second leaf spring portion 231d that is positioned inside the first leaf spring portion 231c and has a rectangular shape. And have. That is, the second leaf spring portion 231d is surrounded by the base end portion 231a, the distal end portion 231b, and the first leaf spring portion 231c. The second leaf spring portion 231d is connected to the distal end portion 231b and extends toward the proximal end portion 231a. The second leaf spring portion 231d is separated from the base end portion 231a and the first leaf spring portion 231c. A cutout portion 239 is formed in the first leaf spring portion 231c on the base end portion 231a side.

  The urging portion 235 includes a pair of first leaf spring portions 235c that connect the base end portion 235a and the distal end portion 235b, and a second leaf spring portion 235d that is positioned inside the first leaf spring portion 235c and has a rectangular shape. And have. That is, the second leaf spring portion 235d is surrounded by the base end portion 235a, the distal end portion 235b, and the first leaf spring portion 235c. The second leaf spring portion 235d is connected to the distal end portion 235b and extends toward the proximal end portion 235a. The second leaf spring portion 235d is separated from the base end portion 235a and the first leaf spring portion 235c.

  The base portion 234 is located between the biasing portion 231 and the biasing portion 235 when viewed from the X-axis direction orthogonal to the −Z-axis direction in which the biasing portion 231 biases the sensor case 220. The base 234 has a contact surface 234 a that comes into contact with the measurement object 160. An opening B is formed in the contact surface 234a.

  In a state where the urging unit 231 urges the sensor case 220 toward the measurement object 160, the sensor case 220 is positioned in the opening B. For this reason, as shown in FIG. 17, the opening B has a shape along the sensor case 220. As shown in FIGS. 15 to 17, the base 234 has a plurality of restricting surfaces 234 b, 234 c, and 234 d on the edge that defines the opening B. The plurality of restricting surfaces 234b, 234c, and 234d restrict the movement of the sensor case 220 by contacting the sensor case 220 located in the opening B in different directions.

  More specifically, in a state where the urging unit 231 urges the sensor case 220 toward the measurement object 160, the restriction surfaces 234b, 234c, and 234d are in the −X axis direction and the −Y axis direction, respectively. The sensor case 220 can be contacted in the + Y-axis direction. Therefore, the restricting surfaces 234b, 234c, and 234d restrict the movement of the sensor case 220 in the −X axis direction, the −Y axis direction, and the + Y axis direction orthogonal to the direction in which the biasing portion 231 biases the sensor case 220. .

  The base portion 234 is formed with an insertion port S through which the sensor case 220 is inserted into the opening B in the + X-axis direction orthogonal to the regulation surface 234b. The insertion slot S is continuous with the opening B. Therefore, the positioning member 230 can insert and remove the sensor case 220 between the measurement object 160 gripped by the grip portion 232 and the biasing portion 231.

  As shown in FIGS. 13 and 14, the sensor case 220 is a surface that comes into contact with the biasing portion 231 when the biasing portion 231 biases the sensor case 220 toward the measurement target 160. 220a and a surface 220b in contact with the measurement object 160.

  The sensor case 220 has a protrusion 226 that protrudes in the + Z-axis direction on the surface 220 a that contacts the biasing portion 231. The notch 239 of the urging unit 231 is in the −Z-axis direction in which the urging unit 231 urges the sensor case 220 in a state where the urging unit 231 urges the sensor case 220 toward the measurement object 160. In the + X axis direction orthogonal to the protrusion 226. The protrusion 226 and the notch 239 come into contact with each other, so that the movement of the sensor case 220 in the + X-axis direction is restricted.

  The sensor case 220 has a protrusion 227 that protrudes in the −Z-axis direction from the surface including the surface 220b. The protrusion 227 has a surface 220c that extends from the edge of the surface 220b in a direction opposite to the surface 220a and is perpendicular to the surface 220b.

  Next, with reference to FIGS. 19 and 20, a process of attaching the positioning member 230 to the measurement object 160 will be described.

  The positioning member 230 is attached to the measurement object 160 by inserting the measurement object 160 between the base 234 and the biasing part 235 from the side where the notch 162 of the measurement object 160 is provided. It is done. In other words, from the state in which the side where the notch 162 of the measurement object 160 is provided between the distal end 235b of the urging portion 235 and the connecting portion 233 side of the base 234, the connecting portion 236 is addressed. The positioning member 230 is attached to the measuring object 160 by pushing the measuring object 160 to the side.

  When the gripping part 232 grips the plate-like part 161 of the measurement object 160, the positioning member 230 is arranged at a position where the notch part 162 and the edge of the gripping part 232 come into contact with each other. Movement in the X-axis direction with respect to the object 160 is restricted. That is, the movement of the positioning member 230 in the X-axis direction is restricted by the contact of the edge of the grip portion 232 with the notch portion 162 of the measurement object 160.

  Next, with reference to FIGS. 12 and 21, a process of attaching the sensor case 220 to the measurement object 160 held by the positioning member 230 and the holding part 232 will be described.

  The sensor case 220 is pushed from the insertion port S toward the regulating surface 234b with the bottom 221 and the regulating surface 234b facing each other and the surfaces 220b and 220c are in contact with the edge of the measurement object 160, It is inserted into the opening B and attached to the positioning member 230 and the measurement object 160.

  When the sensor case 220 comes into contact with the restriction surface 234b, the protrusion 226 is disposed in the notch 239 of the first leaf spring portion 231c. For this reason, the urging unit 231 has the protrusion 226 and the edge of the notch 239 in the + X axis direction in a state where the urging unit 231 urges the sensor case 220 toward the measurement object 160. By abutting, the movement of the sensor case 220 is regulated.

  In a state in which the urging unit 231 urges the sensor case 220 toward the measurement object 160, the surface 220c and the edge of the measurement object 160 abut in the Y-axis direction parallel to the surface 220b, so that the sensor The movement of the case 220 in the −Y axis direction is restricted. The protrusion 227 and the regulation surface 234b abut on each other in the Y-axis direction, so that the movement of the sensor case 220 in the + Y-axis direction is regulated. The positioning member 230 is restricted from moving in the −Y-axis direction with respect to the measurement object 160 by the contact between the restriction surface 234b and the protrusion 227 in the Y-axis direction.

  When the sensor case 220 is disposed in the opening B, the first leaf spring portion 231c and the second leaf spring portion 231d apply a biasing force to the surface 220a of the sensor case 220 at different positions.

  As described above, the base portion 234 is formed with the insertion opening S of the sensor case that is continuous with the opening B. For this reason, the sensor case 220 can be easily inserted into and removed from the positioning member 230 and the measurement object 160. Therefore, handling of the temperature sensor unit 250 is easy.

  The sensor case 220 has a protrusion 227, and the first leaf spring part 231 c has a notch 239. The edge of the notch 239 comes into contact with the protrusion 227. For this reason, the positioning member 230 can regulate the movement of the sensor case 220 in a direction orthogonal to the direction in which the biasing portion 231 biases the sensor case 220 with a compact configuration.

  The sensor case 220 has a protrusion 227 that protrudes from a surface including the surface 220b. For this reason, the protrusion 227 can be brought into contact with the edge of the measurement object 160. Therefore, the movement of the sensor case 220 in a direction parallel to the surface 220b can be restricted.

  The base 234 has a regulation surface 234d. The regulating surface 234d moves the sensor case 220 by contacting the projection 227 in a direction parallel to the surface 220b in a state where the urging portion 231 urges the sensor case 220 against the measurement object 160. To regulate. In this case, if the protrusion 227 is in contact with the edge of the measurement object 160, the deviation of the sensor case 120 is reduced by the base 134, and the deviation of the positioning member 130 is also reduced.

  As mentioned above, although embodiment of this invention has been described, this invention is not necessarily limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the summary.

  For example, in the first embodiment, the base portion 134 has the protruding portion 137, but the biasing portion 135 may have the protruding portion 137. In this case, the protruding portion 137 bends to the opposite side to the base portion 134 side when the measurement object 160 is gripped by the grip portion 132.

  In the second embodiment, a protrusion 227 is provided on the surface 220 b of the sensor case 220 and abuts against the notch 239 of the urging portion 231. However, the engagement relationship between the surface 220b of the sensor case 220 and the urging portion 231 is not limited to this configuration. For example, the temperature sensor unit 250 may have a configuration in which a protrusion of the urging portion 231 is provided and fits into a recess provided in the surface 220b of the sensor case 220.

  In 1st and 2nd embodiment, although the measurement object 160 was prescribed | regulated as the electroconductive member which functions as one component of another electric circuit (not shown), it is not limited to this. The measurement object 160 may be a member (for example, metal) having good heat transfer or a member (for example, a substrate) in which heat generation is a concern.

  DESCRIPTION OF SYMBOLS 100,200 ... Temperature measurement unit, 110 ... Temperature sensor, 120, 220 ... Sensor case, 160 ... Measurement object, 130, 230 ... Positioning member, 131, 135, 231, 235 ... Energizing part, 132, 232 ... Grip Part, 134, 234 ... base part, 150, 250 ... temperature sensor unit, 134a, 234a ... contact surface, A, B ... opening, 134b, 134c, 134d, 134e, 234b, 234c, 234d ... restriction surface, S ... insertion port , 125, 226, 227 ... projection, 137 ... projection, 125a ... contact surface, 138,162,239 ... notch, 120a, 120b, 220a, 220b ... surface, 131c, 135c, 231c, 235c ... One leaf spring part, 131d, 135d, 231d, 235d... Second leaf spring part, 161.

Claims (14)

A temperature sensor;
A sensor case containing the temperature sensor;
A positioning member for positioning the sensor case with respect to the measurement object,
The positioning member is
A gripping part for gripping the measurement object;
The sensor case is connected to the grip part and biases the sensor case toward the measurement object in a state where the sensor object and the measurement object gripped by the grip part are in contact with each other. And an urging section,
The gripping part has a base and a second biasing part that biases the measurement object toward the base,
The base is in contact with the sensor case in a state where the first urging unit is urging the sensor case toward the measurement object, so that the first urging unit causes the sensor case to be in contact with the sensor case. A temperature sensor unit that regulates the movement of the sensor case in a direction orthogonal to the direction of urging.   The base is located between the first biasing portion and the second biasing portion as seen from a direction orthogonal to the direction in which the first biasing portion biases the sensor case. Item 2. The temperature sensor unit according to Item 1. The base is formed with an opening in which the sensor case is disposed,
A plurality of restriction surfaces for restricting movement of the sensor case are formed on the edges defining the opening by contacting the sensor case arranged in the opening in different directions. 2. The temperature sensor unit according to 2.   The temperature sensor unit according to claim 3, wherein an insertion port of the sensor case that is continuous with the opening is formed in the base portion. The sensor case has a protrusion that protrudes in a direction orthogonal to the direction in which the first urging portion urges the sensor case,
In the state in which the first urging portion urges the sensor case toward the measurement object, the base portion has a direction in which the first urging portion urges the sensor case and the protruding portion. 5. The temperature according to claim 1, further comprising a contact surface that regulates movement of the sensor case by contacting the protrusion of the sensor case in a direction perpendicular to the protruding direction. Sensor unit. A connecting portion that connects the base and the second urging portion;
One of the base portion and the second urging portion has a protruding portion that protrudes from the edge located on the side opposite to the connecting portion side toward the other of the base portion and the second urging portion. The temperature sensor unit according to any one of claims 1 to 5. The sensor case has a protrusion that protrudes in a direction orthogonal to the direction in which the first urging portion urges the sensor case,
The base is
A direction in which the first biasing portion biases the sensor case and a direction in which the protruding portion protrudes in a state where the first biasing portion biases the sensor case toward the measurement object. A contact surface that regulates the movement of the sensor case by contacting the protrusion of the sensor case in a direction orthogonal to the sensor case;
A protruding portion that is connected to the second urging portion and protrudes toward the second urging portion from an edge located on the opposite side to the side connected to the second urging portion. And having
The protruding portion of the base is inclined with respect to a surface including a contact surface that comes into contact with the measurement object,
In a state where the first urging portion is urging the sensor case toward the measurement object, the protrusion of the sensor case is formed between the protruding portion of the base and the first urging portion. The temperature sensor unit according to any one of claims 2 to 4, which is located in between. The sensor case has a first abutting portion on a side contacting the first urging portion,
In the state where the first urging unit is urging the sensor case toward the measurement object, the first urging unit is configured such that the first urging unit urges the sensor case. The temperature sensor unit according to any one of claims 1 to 7, further comprising a second contact portion that restricts movement of the sensor case by contacting the first contact portion in an orthogonal direction. The sensor case is
In a state where the first urging portion urges the sensor case toward the measurement object, a first surface that contacts the first urging portion;
In a state where the first urging unit urges the sensor case toward the measurement object, a second surface that comes into contact with the measurement object;
The temperature sensor unit according to claim 1, further comprising: a protrusion protruding from a surface including the second surface.   The base protrudes from a surface including the second surface in a direction parallel to the second surface in a state where the first urging unit is urging the sensor case toward the measurement object. The temperature sensor unit according to claim 9, further comprising a regulating surface that regulates movement of the sensor case by contacting the protrusion.   The temperature sensor unit according to claim 1, wherein the positioning member is a metal.   The temperature sensor unit according to any one of claims 1 to 11, wherein at least one of the first and second urging portions constitutes a leaf spring.   The at least one of the first and second urging portions includes a proximal end portion located on a side connected to the base portion, and a distal end portion located on a side opposite to the side connected to the base portion, A first leaf spring portion connected to the proximal end portion and extending toward the distal end portion; a second leaf spring portion connected to the distal end portion and extending toward the proximal end portion; The temperature sensor unit according to claim 12, comprising:   The sensor case can be inserted and removed between the measurement object and the first urging unit in a state where the measurement object is gripped by the gripping part. The temperature sensor unit according to item.

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