JP2013195147A - Temperature sensor and attachment structure of temperature sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique to detachably attach a temperature sensor easily to an attachment member.SOLUTION: A temperature sensor 10 is attached to an attachment hole 12 with a non-circular cross-sectional shape, penetrating a duct 11. The temperature sensor 10 includes: an elastic deflection part 21 which is formed on the front side of the sensor in an insertion direction into the attachment hole 12, has a shape that resembles the shape of the cross-sectional shape of the attachment hole 12, and elastically deforms in the insertion direction; an insertion part 23 which is formed on the rear side to the elastic deflection part 21 in the insertion direction and formed at a position after rotating with respect to the elastic deflection part 21 about the insertion direction, has a shape that resembles the shape of the cross-sectional shape of the attachment hole 12, and is inserted into the inside of the attachment hole 12; and a lid part 24 which is formed on the rear side to the insertion part 23 in the insertion direction, and sandwiches the attachment part with the elastic deflection part 21.

Description

  The present invention relates to a temperature sensor and a temperature sensor mounting structure.

  Conventionally, the thing of patent document 1 is known as a temperature sensor. In this temperature sensor, a temperature detection element is accommodated in a housing. An anchor type clip is formed at the lower end of the housing. In a state where the temperature sensor is inserted into the mounting hole formed in the mounting member (not shown), the temperature sensor is fixed to the mounting member by elastically engaging the clip with the mounting member. It has become.

JP 2006-250763 A

  However, according to the above configuration, it is considerably difficult to remove the temperature sensor by releasing the engagement between the anchor type clip and the attachment member. This is due to the following reason. That is, in the anchor type clip, after being inserted into the attachment hole, the clip expands beyond the hole edge of the attachment hole, thereby preventing the clip from coming off. For this reason, in order to release the engagement between the clip and the attachment member, the operator needs to perform a release operation inside the attachment member. However, a space for an operator to put a hand and perform a release operation is not always secured in the region inside the attachment hole.

  Thus, according to the temperature sensor which concerns on said structure, there existed a problem that it was difficult to attach to an attachment member so that attachment or detachment was easy.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a technique that allows a temperature sensor to be easily attached to and detached from an attachment member.

  The present invention is a temperature sensor that is inserted into and attached to a mounting hole having a non-circular cross section that is penetrated by the mounting portion, and is formed on the front side in the insertion direction into the mounting hole, and is a cross-sectional shape of the mounting hole And an elastic flexure that elastically deforms in the insertion direction and is behind the elastic flexure in the insertion direction and rotates about the insertion direction with respect to the elastic flexure Formed at the position formed, and has a shape that follows the cross-sectional shape of the mounting hole and is inserted into the mounting hole, and is formed on the rear side in the insertion direction with respect to the insertion portion. And a lid portion that sandwiches the attachment portion with the elastic deflection portion.

  Further, the present invention is a temperature sensor mounting structure comprising: a mounting portion through which a mounting hole having a non-circular cross section is penetrated; and a temperature sensor that is inserted into the mounting hole and is detachably mounted. The temperature sensor is formed on the front side in the insertion direction into the mounting hole, has a shape that follows the cross-sectional shape of the mounting hole, and elastically deforms in the insertion direction, and more than the elastic bending portion. The rear side of the insertion direction is formed at a position rotated about the insertion direction with respect to the elastic deflecting portion, and has a shape that follows the cross-sectional shape of the mounting hole and the mounting hole. An insertion portion that is inserted inside, and a lid portion that is formed on the rear side in the insertion direction with respect to the insertion portion and sandwiches the attachment portion with the elastic bending portion. That.

  When attaching the temperature sensor to the attachment portion, first, the attachment portion is inserted into the attachment hole in a posture in which the shape of the elastic bending portion and the cross-sectional shape of the attachment hole are matched. Next, the temperature sensor is rotated about the insertion direction. Then, the elastic bending part rides on the attachment part and elastically deforms in the insertion direction. When the temperature sensor is further rotated to reach a position where the shape of the insertion portion matches the cross-sectional shape of the attachment hole, the insertion portion is inserted into the attachment hole. At this time, the fitting portion is held inside the attachment hole by the attachment portion being sandwiched between the elastic deflection portion and the lid portion by the elastic force of the elastic deflection portion. As a result, the temperature sensor is positioned with respect to the attachment portion. Thus, according to this invention, a temperature sensor can be attached to an attachment part by simple operation of rotating after inserting a temperature sensor in the inside of an attachment hole.

  On the other hand, when removing the temperature sensor from the attachment portion, first, the temperature sensor is pulled backward in the insertion direction to elastically deform the elastic bending portion in the insertion direction. Then, the insertion portion is detached from the attachment hole. Next, the temperature sensor is rotated to match the shape of the elastic flexure and the cross-sectional shape of the mounting hole. Thereafter, the temperature sensor can be removed from the attachment portion by pulling out the temperature sensor. Thus, according to the present invention, the temperature sensor can be removed from the attachment portion by a simple operation of rotating after pulling backward in the insertion direction.

  Thus, according to this invention, a temperature sensor can be easily attached or detached with respect to an attaching part.

  As embodiments of the present invention, the following embodiments are preferable.

  Between the elastic bending portion and the lid portion, the direction of rotation about the insertion direction is fixed by abutting the inner peripheral surface of the attachment hole while being fitted inside the attachment hole. It is preferable that a rotation restricting portion for restricting in the direction is formed.

  According to the above aspect, when the temperature sensor inserted into the attachment hole is rotated about the insertion direction, the temperature sensor is allowed to rotate only in one direction. As a result, the temperature sensor attachment process can be standardized, and the efficiency of the temperature sensor attachment operation can be improved.

  The cross-sectional shape of the mounting hole is preferably an oval shape.

  According to said aspect, the corner | angular part which protrudes outward is not formed in the elastic bending part and insertion part formed according to the cross-sectional shape of an attachment hole. Thereby, when an elastic bending part and an insertion part approach into the inside of an attachment hole, it can suppress that the inner peripheral surface of an attachment hole is scraped by an elastic bending part and an insertion part. As a result, even if the temperature sensor is repeatedly attached and detached, the cross-sectional shape of the attachment hole can be maintained, so that the temperature sensor can be prevented from rattling inside the attachment hole. Thereby, generation | occurrence | production of unusual noise can be suppressed. Moreover, since it can suppress that the precision of the attachment position of a temperature sensor falls, the precision of temperature detection can be improved.

  It is preferable that the lid portion is configured to block the attachment hole from the rear side in the insertion direction in a state where the insertion portion is fitted in the attachment hole.

  According to the above aspect, the attachment hole is closed by the lid portion in a state where the attachment portion is sandwiched between the elastic bending portion and the lid portion. Thereby, it can suppress that air leaks from an attachment hole. As a result, the accuracy of temperature detection can be improved.

  A bottomed element receiving hole for receiving the temperature detecting element is formed, and the element receiving hole is filled with a filler in a state where the temperature detecting element is received in the element receiving hole. It is preferable.

  According to the above aspect, since the inside of the element accommodation hole is filled with the filler, the formation of an air layer between the temperature detection element and the inner wall of the element accommodation hole is suppressed. Thereby, the accuracy of temperature detection can be improved.

  According to the present invention, the temperature sensor can be easily attached to and detached from the attachment member.

FIG. 1 is a partially cutaway side view showing a state before a temperature sensor is attached to a duct. FIG. 2 is a plan view showing a duct mounting hole. FIG. 3 is a cross-sectional view showing the temperature sensor. FIG. 4 is a plan view showing the temperature sensor. FIG. 5 is a side view showing the temperature sensor. FIG. 6 is a side view of the temperature sensor as seen from a different direction from FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 9 is a partially cutaway plan view of the state in which the rotation restricting portion is inserted into the attachment hole as viewed from above. FIG. 10 is a partially cutaway plan view of a state where the rotation restricting portion is rotated by 90 ° inside the attachment hole as viewed from above. FIG. 11 is a bottom view showing the temperature sensor. FIG. 12 is a cross-sectional view showing a process of rotating the temperature sensor around the insertion direction after inserting the temperature sensor into the mounting hole. FIG. 13 is a partially cutaway side view of the temperature sensor viewed from a direction different from FIG. FIG. 14 is a cross-sectional view showing a state in which the temperature sensor is completely fitted in the mounting hole. FIG. 15 is a cross-sectional view of the state in which the temperature sensor is completely fitted in the mounting hole as seen from a direction different from that in FIG.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. The temperature sensor 10 according to the present embodiment is attached to a duct 11 (an example of an attachment member). The duct 11 according to the present embodiment is a blower duct provided in a battery module (not shown) that is mounted on a vehicle (not shown) such as an electric vehicle or a hybrid vehicle and used as a power source of the vehicle. 11.

(Duct 11)
Since the performance of the battery module is affected by temperature, it is preferable to maintain the temperature of the battery module at a predetermined temperature. Therefore, the air duct 11 is provided in the battery module, and when the temperature of the battery module is relatively high, the battery module is cooled by cold air, and conversely, the temperature of the battery module is relatively low. If it is, it may be heated by warm air.

  As described above, in order to control the temperature of the battery module by blowing air, it is necessary to detect the temperature of the wind flowing through the duct 11. For this reason, the temperature sensor 10 is attached to the duct 11.

  As shown in FIG. 1, a space is formed inside the duct 11, and air is circulated in the space. An attachment hole 12 for attaching the temperature sensor 10 passes through the duct 11. The temperature sensor 10 is inserted into the mounting hole 12 from the top to the bottom. In the following description, the direction indicated by the arrow A in FIG. 1 may be described as the insertion direction of the temperature sensor 10.

  As shown in FIG. 2, the mounting hole 12 has a non-circular cross-sectional shape. In the present embodiment, the cross-sectional shape of the attachment hole 12 is an oval shape. Specifically, the cross-sectional shape of the mounting hole 12 includes a pair of parallel straight portions 13 having the same length, and semicircular arcs 14 respectively connected to both ends of the straight portion 13.

(Temperature sensor 10)
As shown in FIG. 3, the temperature sensor 10 includes a temperature detection element 15 and a synthetic resin element holder 16 that holds the temperature detection element 15.

(Temperature detection element 15)
The temperature detection element 15 is configured by, for example, a thermistor. As the thermistor, a PTC thermistor or an NTC thermistor can be appropriately selected. The temperature detection element 15 is not limited to a thermistor, and any element can be appropriately selected as long as the temperature can be detected.

  A pair of electric wires 17 are led out from the upper end of the temperature detection element 15. The electric wire 17 is connected to an external circuit (not shown), and a signal from the temperature detection element 15 is transmitted to the external circuit via the electric wire 17. The external circuit may be a control circuit composed of electronic components such as transistors or a microcomputer.

(Shaft 18)
The element holder 16 includes a shaft portion 18 that is elongated in the vertical direction (the insertion direction of the temperature sensor 10). The cross-sectional shape of the shaft portion 18 is circular (see FIG. 4). The lower end of the shaft portion 18 is chamfered and formed in a substantially spherical shape. A bottomed element receiving hole 19 for receiving the temperature detecting element 15 is formed at the upper end of the shaft portion 18 so as to extend in the vertical direction. The temperature detection element 15 is accommodated in a state where the tip thereof is in contact with the bottom of the element accommodation hole 19 from above. In the state where the temperature detecting element 15 is accommodated in the element accommodating hole 19, the element accommodating hole 19 is filled with a filler 20. The filler 20 can be a known synthetic resin material such as a silicone resin, a thermosetting resin, or a thermoplastic resin.

(Elastic flexure 21)
As shown in FIGS. 5 and 6, the temperature sensor 10 includes, in order from the front side in the insertion direction (the lower side in FIGS. 5 and 6), an elastic bending portion 21, a rotation restriction portion 22, a fitting portion 23, and a lid portion. 24 is formed. The elastic bending part 21, the rotation restricting part 22, the fitting part 23, and the shaft part 18 are formed coaxially in the insertion direction.

  The elastic bending portion 21 is formed so as to protrude from the shaft portion 18 of the temperature sensor 10 in a direction intersecting with the insertion direction. In the present embodiment, the elastic deflecting portion 21 is formed to protrude from the shaft portion 18 in a direction orthogonal to the insertion direction.

  As shown in FIG. 7, the elastic deflecting portion 21 has an oval shape when viewed from above. The shape of the elastic deflecting portion 21 includes a pair of parallel straight portions 25 and semicircular arcs 26 connected to both ends of the straight portions 25 when viewed from above. The shape of the elastic bending portion 21 is formed in a shape that follows the cross-sectional shape of the mounting hole 12. Specifically, the shape of the elastic deflecting portion 21 may be the same as the cross-sectional shape of the attachment hole 12, or may be formed in a slightly smaller similar shape than the cross-sectional shape of the attachment hole 12. With the above configuration, the elastic bending portion 21 can be inserted into the mounting hole 12.

  On the upper surface of the elastic deflecting portion 21, step portions 27 projecting upward are formed at both end portions in the longitudinal direction. The side edge of the stepped portion 27 is chamfered. On the upper surface of the stepped portion 27, a protruding portion 28 protruding upward is formed at a position near the end of the stepped portion 27. The upper surface of the projection 28 is rounded.

(Rotation restriction part 22)
A rotation restricting portion 22 is formed at a position slightly separated from the elastic deflecting portion 21 material behind the elastic deflecting portion 21 in the insertion direction (upward in FIGS. 5 and 6). As shown in FIG. 8, the rotation restricting portion 22 has a shape obtained by rounding the upper left corner and the lower right corner in FIG.

  The rotation restricting portion 22 is arranged above and below in FIG. 8 and a pair of parallel first locking surfaces 29 formed at positions corresponding to the pair of parallel linear portions 25 constituting the elastic deflecting portion 21; 8 and a second locking surface 30 formed at a position corresponding to a pair of linear portions 31 constituting a fitting portion 23 to be described later. The first locking surface 29 and the second locking surface 30 are connected by a curved surface 33.

  FIG. 9 is a partially enlarged cross-sectional view of the state in which the rotation restricting portion 22 is inserted into the attachment hole 12 from the rear (above) in the insertion direction as seen from above. The pair of first locking surfaces 29 are disposed substantially parallel to the pair of straight portions 13 of the attachment hole 12. In this state, since the curved surface 33 is formed, the rotation restricting portion 22 can rotate clockwise (in the direction indicated by the arrow B) in FIG. 9 at an angle of 90 ° with the insertion direction as an axis. Yes. On the other hand, in the counterclockwise direction in FIG. 9, the pair of linear portions 13 of the attachment hole 12 and the pair of first locking surfaces 29 are in contact with each other so that rotation is restricted. Since FIG. 9 is a view of the insertion direction as seen from the rear in the insertion direction, the rotation direction of the rotation restricting portion 22 matches the direction seen from the operator who inserts the temperature sensor 10 into the mounting hole 12.

  FIG. 10 is a partially enlarged cross-sectional view of the rotation restricting portion 22 as viewed from above in a state where the rotation restricting portion 22 is rotated in the clockwise direction in FIG. 9 at an angle of 90 ° about the insertion direction. It is. In this state, the rotation restricting portion 22 is rotatable counterclockwise in FIG. 10 (the direction indicated by the arrow C) at an angle of 90 ° with the insertion direction as an axis. On the other hand, in the clockwise direction in FIG. 10, the pair of linear portions 13 of the attachment hole 12 and the pair of first locking surfaces 29 are in contact with each other, so that the rotation is restricted.

(Fitting part 23)
As shown in FIGS. 5 and 6, an insertion portion 23 is formed in the rear of the rotation restricting portion 22 in the insertion direction so as to continue to the upper portion of the rotation restricting portion 22. The shape of the insertion portion 23 is an ellipse when viewed from above. The shape of the insertion portion 23 includes a pair of parallel straight portions 31 and a semicircular arc 32 connected to both ends of the straight portions 31 when viewed from above. The shape of the fitting portion 23 is formed to follow the cross-sectional shape of the mounting hole 12. Specifically, the shape of the fitting portion 23 may be the same as the cross-sectional shape of the attachment hole 12, or may be formed in a slightly smaller similar shape than the cross-sectional shape of the attachment hole 12. With the above configuration, the fitting portion 23 can be fitted into the mounting hole 12.

  As shown in FIG. 11, the elastic bending part 21 and the insertion part 23 are coaxially formed about the up-down direction (insertion direction). Moreover, the elastic bending part 21 and the insertion part 23 are formed in the position rotated 90 degrees centering | focusing on the insertion direction.

(Cover 24)
As shown in FIG. 5 and FIG. 6, a lid portion 24 is formed at the rear of the insertion portion 23 in the insertion direction with respect to the upper portion of the insertion portion 23. The lid portion 24 is formed to protrude from the outer surface of the shaft portion 18 in a direction orthogonal to the insertion direction. The outer shape of the lid portion 24 is circular. The lid portion 24 is formed in such a size that the attachment hole 12 is covered by the lid portion 24 in a state where the temperature sensor 10 is attached to the attachment hole 12.

  As shown in FIG. 11, the lid portion 24 is formed coaxially with respect to the elastic deflection portion 21, the fitting portion 23, and the vertical direction (insertion direction). Moreover, it has comprised the substantially disc shape larger than the projection area to the up-down direction of the elastic bending part 21 and the insertion part 23. FIG. As shown in FIGS. 5 and 6, an inclined surface 34 whose upper surface is inclined downward is formed at the edge of the lid portion 24. Thereby, the edge part of the cover part 24 becomes easy to bend and deform | transform into an up-down direction.

  As shown in FIG. 1, in the natural state, the distance between the lower surface of the lid portion 24 and the upper end of the protruding portion 28 of the elastic deflecting portion 21 is a distance L. Further, the thickness dimension of the wall portion constituting the duct 11 is M. The distance L between the lower surface of the lid portion 24 and the upper end of the projection 28 in the natural state is set to be smaller than the thickness dimension M of the wall portion constituting the duct 11.

(Picking part 35)
As shown in FIGS. 5 and 6, a pair of knobs 35 that protrude from the shaft portion 18 in the direction orthogonal to the insertion direction and extend in the insertion direction are formed behind the lid portion 24 in the insertion direction. ing.

  Moreover, as shown in FIG. 4, the knob | pick part 35 has comprised plate shape, and protrudes in the axial part 18 from the symmetrical position about the insertion direction. In other words, it protrudes outward in the radial direction from the diameter position of the shaft portion 18.

(Installation process)
Then, an example of the attachment process to the attachment member of the temperature sensor 10 which concerns on this embodiment is demonstrated. The attachment process is not limited to the following description.

  First, the operator holds the temperature sensor 10 by picking the knob 35 with a finger. Next, the elastic bending portion 21 is inserted from above the mounting hole 12 in a posture in which the cross-sectional shape of the mounting hole 12 of the duct 11 is matched with the outer shape of the elastic bending portion 21. Then, the temperature sensor 10 is inserted into the attachment hole 12 from above in the order of the shaft portion 18, the elastic deflection portion 21, and the rotation restriction portion 22.

  FIG. 9 shows a state in which the rotation restricting portion 22 is inserted into the mounting hole 12. In this state, the lower surface of the insertion portion 23 is in contact with the upper surface of the duct 11 from above, so that the insertion portion 23 is not inserted into the mounting hole 12. The pair of first locking surfaces 29 formed on the rotation restricting portion 22 abuts with the pair of linear portions 13 of the attachment hole 12, so that the temperature sensor 10 rotates in the clockwise direction in FIG. 9 about the insertion direction. Is allowed to rotate, and the rotation is restricted in the counterclockwise direction. In this state, the operator picks the knob part 35 and rotates the temperature sensor 10 by 90 ° in the clockwise direction around the insertion direction.

  FIG. 12 shows a cross-sectional view of the state where the temperature sensor 10 is being rotated by the operator. First, when the operator rotates the knob 35, the protrusion 28 of the elastic bending portion 21 rides on the lower surface of the duct 11. Thereby, the elastic bending part 21 elastically deforms about an insertion direction. In this state, the fitting portion 23 is in contact with the upper surface of the duct 11 and is not fitted into the mounting hole 12. At this time, since the stepped portion 27 and the protrusion 28 of the elastic bending portion 21 are chamfered, the elastic bending portion 21 can easily climb onto the lower surface of the duct 11.

  FIG. 13 shows the relationship between the distance L between the lower surface of the lid portion 24 and the upper surface of the projection 28 in FIG. 12 and the thickness dimension M of the wall portion constituting the duct 11. The elastic bending portion 21 is bent and deformed downward from the natural state, whereby a resilient force is generated, and the lid portion 24 is pressed against the duct 11 by this resilient force.

  When the temperature sensor 10 is rotated by 90 °, the rotation restricting portion 22 assumes the posture shown in FIG. In this state, the second locking surface 30 formed on the rotation restricting portion 22 contacts the pair of linear portions 13 of the attachment hole 12, so that the temperature sensor 10 has the insertion direction as an axis in FIG. The rotation is allowed in the counterclockwise direction and the rotation is restricted in the clockwise direction. As a result, the temperature sensor 10 is properly fitted into the mounting hole 12.

  In the regular fitting state, as shown in FIG. 14, the fitting portion 23 is fitted into the mounting hole 12. Since the shape of the insertion portion 23 follows the cross-sectional shape of the mounting hole 12, the temperature sensor 10 cannot rotate about the insertion direction when the insertion portion 23 is inserted. In other words, in the temperature sensor 10, the rotation about the insertion direction is restricted by the side surface of the fitting portion 23 being in contact with the inner peripheral surface of the mounting hole 12.

  FIG. 15 shows a state in which the duct 11 is sandwiched between the elastic bending portion 21 and the lid portion 24 by the elastic force of the elastic bending portion 21. Thereby, since the cover part 24 is pressed against the upper surface of the duct 11, air leakage from between the cover part 24 and the duct 11 is suppressed.

(Removal process)
Then, an example of the removal process of the temperature sensor 10 is demonstrated. The attachment process is not limited to the following description.

  First, the operator picks the knob portion 35 of the temperature sensor 10 that is normally fitted in the mounting hole 12 and pulls it upward (rearward in the insertion direction). Then, the fitting portion 23 is detached from the attachment hole 12. At this time, the elastic bending part 21 bends and deforms in the insertion direction, thereby allowing the fitting part 23 to be pulled upward.

  Next, as shown in FIG. 10, the operator rotates the rotation restricting portion 22 by 90 ° in the counterclockwise direction about the insertion direction. Then, the rotation restricting portion 22 assumes the posture shown in FIG. 9 inside the attachment hole 12. In this state, since the shape of the elastic deflecting portion 21 and the cross-sectional shape of the mounting hole 12 are matched, the operator picks the knob 35 and pulls the temperature sensor 10 upward to The sensor 10 can be removed from the mounting hole 12.

(Operation and effect of the embodiment)
Then, the effect | action and effect of this embodiment are demonstrated. According to this embodiment, the temperature sensor 10 can be attached to the duct 11 as follows. First, the elastic bending portion 21 is inserted into the mounting hole 12 in a posture in which the shape of the elastic bending portion 21 and the cross-sectional shape of the mounting hole 12 are matched. Next, the temperature sensor 10 is rotated around the insertion direction. Then, the elastic bending part 21 rides on the duct 11 and elastically deforms in the insertion direction. When the temperature sensor 10 is further rotated to reach a position where the shape of the insertion portion 23 matches the cross-sectional shape of the attachment hole 12, the insertion portion 23 is inserted into the attachment hole 12. At this time, the duct 11 is sandwiched between the elastic bending portion 21 and the lid portion 24 by the elastic force of the elastic bending portion 21, whereby the fitting portion 23 is held inside the mounting hole 12. As a result, the temperature sensor 10 is positioned with respect to the duct 11. Thus, according to the present embodiment, the temperature sensor 10 can be attached to the duct 11 by a simple operation of rotating the temperature sensor 10 after being inserted into the attachment hole 12.

  On the other hand, when removing the temperature sensor 10 from the duct 11, first, the temperature sensor 10 is pulled backward in the insertion direction to elastically deform the elastic bending portion 21 in the insertion direction. Then, the fitting portion 23 is detached from the attachment hole 12. Next, the temperature sensor 10 is rotated to match the shape of the elastic deflecting portion 21 with the cross-sectional shape of the mounting hole 12. Thereafter, the temperature sensor 10 can be removed from the duct 11 by pulling out the temperature sensor 10. Thus, according to the present embodiment, the temperature sensor 10 can be removed from the duct 11 by a simple operation of rotating after pulling backward in the insertion direction.

  Thus, according to this embodiment, the temperature sensor 10 can be easily attached to and detached from the duct 11.

  Further, according to the present embodiment, the insertion direction is set between the elastic bending portion 21 and the lid portion 24 by being in contact with the inner peripheral surface of the mounting hole 12 while being fitted in the mounting hole 12. A rotation restricting portion 22 that restricts the direction of rotation as a shaft in one direction is formed. Thereby, when the temperature sensor 10 inserted in the attachment hole 12 is rotated with the insertion direction as an axis, the temperature sensor 10 is allowed to rotate only in one direction. As a result, the mounting process of the temperature sensor 10 can be standardized, so that the efficiency of the mounting operation of the temperature sensor 10 can be improved.

  Moreover, according to this embodiment, the cross-sectional shape of the attachment hole 12 has an oval shape. Thereby, the corner | angular part which protrudes outward is not formed in the elastic bending part 21 and the fitting part 23 which are formed according to the cross-sectional shape of the attachment hole 12. FIG. Thereby, when the elastic bending part 21 and the insertion part 23 approach into the inside of the attachment hole 12, it can suppress that the inner peripheral surface of the attachment hole 12 is scraped by the elastic bending part 21 and the insertion part 23. As a result, even if the temperature sensor 10 is repeatedly attached and detached, the cross-sectional shape of the attachment hole 12 can be maintained, so that the temperature sensor 10 can be prevented from rattling inside the attachment hole 12. Thereby, generation | occurrence | production of unusual noise can be suppressed. Moreover, since it can suppress that the precision of the attachment position of the temperature sensor 10 falls, the precision of temperature detection can be improved.

  Further, according to the present embodiment, the lid portion 24 is configured to close the attachment hole 12 from the rear side in the insertion direction in a state where the fitting portion 23 is fitted inside the attachment hole 12. Thereby, the attachment hole 12 is closed by the lid portion 24 in a state where the attachment portion is sandwiched between the elastic deflecting portion 21 and the lid portion 24. Thereby, it can suppress that air leaks from the attachment hole 12. FIG. As a result, the accuracy of temperature detection can be improved.

  In addition, according to the present embodiment, the bottomed element housing hole 19 in which the temperature detecting element 15 is housed is formed, and in the state where the temperature detecting element 15 is housed in the element housing hole 19, the element housing is performed. The inside of the hole 19 is filled with a filler 20. Thereby, since the inside of the element accommodation hole 19 is filled with the filler 20, the formation of an air layer between the temperature detection element 15 and the inner wall of the element accommodation hole 19 is suppressed. Thereby, the accuracy of temperature detection can be improved.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the present embodiment, the temperature sensor 10 is attached to the duct 11. However, the present invention is not limited to this, and the temperature sensor 10 may be attached to a part for measuring the outside air temperature, and the indoor temperature is set. You may attach to the site | part to measure, and you may attach to the site | part which measures the temperature of an apparatus, and can attach to arbitrary positions as needed.

  (2) In the present embodiment, the temperature sensor 10 is inserted and attached to the mounting hole 12 of the duct 11 from above. However, the temperature sensor 10 is not limited to this, and the temperature sensor 10 is attached to the mounting hole 12 of the duct 11. Can be attached from any direction. For example, the temperature sensor 10 can be attached to the attachment hole 12 of the duct 11 from below, from the side, or from an oblique direction.

  (3) In the present embodiment, the rotation restricting portion 22 is provided to restrict the rotation direction of the temperature sensor 10 in the mounting hole 12, but the rotation restricting portion 22 may be omitted.

  (4) The cross-sectional shape of the attachment hole 12 may be a polygonal shape such as a triangle, a quadrangle, or a pentagon. Further, the cross-sectional shape of the attachment hole 12 may be a regular polygon or may not be a regular polygon. Further, the cross-sectional shape of the attachment hole 12 may be elliptical. Furthermore, the cross-sectional shape of the attachment hole 12 may be a shape formed only by a curve, or may be a configuration formed by both a curve and a straight line. Thus, the cross-sectional shape of the attachment hole 12 can be selected as appropriate.

  (5) In the present embodiment, the lid 24 covers the attachment hole 12 in a state where the temperature sensor 10 is attached to the attachment hole 12. However, the present invention is not limited to this, and the lid 24 covers the attachment hole 12. There may be no configuration.

  (6) The temperature sensor 10 may be formed by insert molding the temperature detection element 15 with a synthetic resin.

  (7) In the present embodiment, the temperature sensor 10 is configured to be fitted into the mounting hole 12 by rotating the temperature sensor 10 by substantially 90 °. However, the present invention is not limited to this. It is good also as a structure which the insertion part 23 inserts in the inside of the attachment hole 12 by rotating only by the defined arbitrary angle.

  (8) In the present embodiment, in order to lock the temperature sensor 10, the temperature sensor 10 is configured to rotate clockwise about the insertion direction, and the temperature sensor 10 is unlocked to release the lock. 10 is configured to rotate counterclockwise about the insertion direction as an axis, but is not limited to this, in order to lock the temperature sensor 10, rotate the temperature sensor counterclockwise and release the lock. The temperature sensor 10 may be configured to rotate clockwise.

10 ... temperature sensor 11 ... duct (mounting part)
DESCRIPTION OF SYMBOLS 12 ... Mounting hole 19 ... Element accommodation hole 20 ... Filler 21 ... Elastic bending part 22 ... Rotation restriction part 23 ... Insertion part 24 ... Cover part

Claims (10)

A temperature sensor that is inserted and attached to an attachment hole having a non-circular cross section that is penetrated by the attachment part,
An elastic bending part that is formed on the front side in the insertion direction into the attachment hole and has a shape that follows the cross-sectional shape of the attachment hole and elastically deforms in the insertion direction;
A shape that follows the cross-sectional shape of the mounting hole is formed at a position behind the elastic bending portion in the insertion direction and rotated about the insertion direction with respect to the elastic bending portion. And a fitting portion to be fitted into the mounting hole,
A temperature sensor comprising: a lid portion that is formed on the rear side in the insertion direction with respect to the insertion portion and sandwiches the attachment portion with the elastic bending portion.   Between the elastic bending portion and the lid portion, the direction of rotation about the insertion direction is fixed by abutting the inner peripheral surface of the attachment hole while being fitted inside the attachment hole. The temperature sensor according to claim 1, wherein a rotation restricting portion that restricts in a direction is formed.   The temperature sensor according to claim 1, wherein a cross-sectional shape of the mounting hole is an oval shape.   4. The lid according to claim 1, wherein the attachment portion is configured to close the attachment hole from the rear side in the insertion direction in a state in which the insertion portion is inserted into the attachment hole. 5. Temperature sensor.   A bottomed element receiving hole for receiving the temperature detecting element is formed, and the element receiving hole is filled with a filler in a state where the temperature detecting element is received in the element receiving hole. The temperature sensor according to any one of claims 1 to 4. A mounting portion through which a mounting hole having a non-circular cross section is passed;
A temperature sensor that is inserted into the mounting hole and is detachably mounted; and a temperature sensor mounting structure comprising:
The temperature sensor is formed on the front side in the insertion direction into the attachment hole, has a shape that follows the cross-sectional shape of the attachment hole, and elastically deforms in the insertion direction, and is elastically deformed.
A shape that follows the cross-sectional shape of the mounting hole is formed at a position behind the elastic bending portion in the insertion direction and rotated about the insertion direction with respect to the elastic bending portion. And a fitting portion to be fitted into the mounting hole,
A temperature sensor mounting structure comprising: a lid portion that is formed on the rear side in the insertion direction with respect to the insertion portion and sandwiches the mounting portion with the elastic bending portion.   Between the elastic bending portion and the lid portion, the direction of rotation about the insertion direction is fixed by abutting the inner peripheral surface of the attachment hole while being fitted inside the attachment hole. The temperature sensor mounting structure according to claim 6, wherein a rotation restricting portion that restricts in a direction is formed.   The temperature sensor mounting structure according to claim 6 or 7, wherein a cross-sectional shape of the mounting hole is an oval shape.   9. The lid according to claim 6, wherein the lid is configured to block the attachment hole from the rear side in the insertion direction in a state where the insertion portion is fitted into the attachment hole. Temperature sensor mounting structure.   The temperature sensor has a bottomed element receiving hole for receiving a temperature detecting element, and the temperature detecting element is stored in the element receiving hole in the state where the temperature detecting element is received in the element receiving hole. The temperature sensor mounting structure according to any one of claims 6 to 9, which is filled with a filler.

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