Temperature sensor mounting structure

Abstract

To provide a temperature sensor attachment structure capable of hardly causing galvanic corrosion and obtaining stable attachment force over a long period of time.SOLUTION: A temperature sensor attachment structure includes: a pair of temperature sensor attachment fixtures 1A, 1B formed of resin and sandwiching a pipe P and a temperature sensor contacted with the pipe therebetween in a state opposite to each other; and a spring member 10 attached to the pair of temperature sensor attachment fixtures in a state opposite to each other and urging the pair of temperature sensor attachment fixtures toward an opposite direction to each other.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a temperature sensor mounting structure used to mount a temperature sensor on a pipe. [Background technology]

[0002] Among the temperature sensors (using thermistor elements) used in home appliances, automobile-related products, and electrical products, there are those that are attached to pipes to measure the temperature of the pipes in order to detect the state of gases or liquids that are supplied, circulated, or discharged through the pipes. Conventionally, a temperature sensor has been fixed to a pipe using a leaf spring made of stainless steel or other thin metal plate with a corrosion-resistant coating, taking into consideration corrosion resistance, retention of mounting force against temperature history, ease of mounting, etc.

[0003] For example, Patent Document 1 describes a piping clip that has a piping holding portion that holds a piping and a temperature-sensing portion that holds a temperature-sensing portion (temperature sensor) that measures the temperature of the piping, and is used to fix the temperature-sensing portion to the piping. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-340453 Summary of the Invention [Problem to be solved by the invention]

[0005] The above conventional techniques still have the following problems. The technology described in Patent Document 1 uses a metal leaf spring for the temperature sensor holder because it is easy to attach to the piping. However, because the surface of the temperature sensor is primarily made of metal such as aluminum and the leaf spring is made of metal such as stainless steel, corrosion called galvanic corrosion can occur due to contact between the two metals. One solution is to apply a coating to the leaf spring, but this does not necessarily withstand the specified temperature environment. Another option is to use a resin part to secure the sensor, which is less susceptible to galvanic corrosion. However, this approach has the disadvantage of potentially reducing the mounting strength due to creep over long-term use.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a temperature sensor mounting structure that is less susceptible to galvanic corrosion and that can obtain a stable mounting force over a long period of time. [Means for solving the problem]

[0007] The present invention employs the following configuration to solve the above problems: That is, a temperature sensor mounting structure according to a first aspect of the invention is characterized by comprising a pair of temperature sensor mounting jigs molded from resin that are opposed to each other and sandwich a pipe and a temperature sensor in contact with the pipe between them, and a spring member that is attached to the opposed temperature sensor mounting jigs and biases the pair of temperature sensor mounting jigs in opposing directions.

[0008] This temperature sensor mounting structure comprises a pair of temperature sensor mounting jigs molded from resin that sandwich a pipe and a temperature sensor in contact with the pipe while facing each other, and a spring member attached to the pair of opposed temperature sensor mounting jigs that urges the pair of temperature sensor mounting jigs toward each other.Since the temperature sensor mounting jigs are made from resin, galvanic corrosion is less likely to occur between them and the temperature sensor, and since the pair of temperature sensor mounting jigs are urged by the spring member, a stable mounting force can be obtained over the long term. In addition, since the pipe and temperature sensor are sandwiched between a pair of temperature sensor mounting jigs from both sides, the heat from the pipe can be efficiently transferred to the temperature sensor. Furthermore, by sandwiching the pipe between a pair of temperature sensor mounting jigs facing each other and holding the pipe and temperature sensor from both sides, and further applying force with a spring member, a stronger holding force can be obtained compared to when fixing with only one jig.

[0009] A temperature sensor mounting structure according to a second invention is the temperature sensor mounting structure according to the first invention, characterized in that the spring member is a leaf spring made of metal. That is, in this temperature sensor mounting structure, the spring member is a leaf spring made of metal, so it can be manufactured easily and at low cost, and a stable biasing force can be provided to obtain a strong mounting force over the long term. Furthermore, the metal spring members are attached to a pair of resin temperature sensor mounting jigs and do not come into contact with the temperature sensor or piping, so galvanic corrosion does not occur.

[0010] A temperature sensor mounting structure according to a third invention is the temperature sensor mounting structure according to the first or second invention, characterized in that the pair of temperature sensor mounting jigs have the same shape. In other words, in this temperature sensor mounting structure, a pair of temperature sensor mounting jigs have the same shape, so by using two of the same parts, there is no need to make parts with different shapes, which reduces the unit cost of the parts.

[0011] The temperature sensor mounting structure of the fourth invention is characterized in that, in any of the first to third inventions, one of the pair of temperature sensor mounting jigs and the other of the pair of temperature sensor mounting jigs each have a pipe side support portion into which a pipe can be fitted and a sensor side support portion into which a temperature sensor in contact with the pipe can be fitted, and one of the jigs has a convex portion, and the other has a concave portion into which the convex portion of the one of the jigs can be fitted when facing the one of the jigs and sandwiching the pipe and the temperature sensor. That is, in this temperature sensor mounting structure, one of the two has a convex portion, and the other has a concave portion into which the convex portion of the one of the two can be fitted when the other is opposed to the other and sandwiches the piping and temperature sensor. Therefore, the spring force (spring force / elastic force) of the piping side support part against the fitted piping, plus the fitting force between the concave portion and the convex portion, allows the temperature sensor to be easily mounted on the piping with stable and sufficient holding force.

[0012] The temperature sensor mounting structure of the fifth invention is characterized in that, in any of the first to fourth inventions, the sensor side support portion is provided with a sensor locking portion that abuts against the end of the temperature sensor to position it when the temperature sensor is fitted into its side end. In other words, in this temperature sensor mounting jig, the sensor side support part is equipped with a sensor locking part that abuts against the end of the temperature sensor to position it when the temperature sensor is fitted into its side end, so that when the other part is slid toward the one side and the respective convex and concave parts are fitted together, the sensor locking part prevents the temperature sensor from shifting position from the sensor side support part.

[0013] The temperature sensor mounting structure of the sixth invention is characterized in that, in the fourth or fifth invention, one of the convex portions is formed on the piping side support portion, and the other is provided with a piping side uneven support portion having a concave portion that can be fitted together with the convex portion of the piping side support portion. In other words, in this temperature sensor mounting structure, the other of the two is equipped with a pipe-side unevenness support part having a recess that can fit into the convex part of the pipe-side support part.By providing a separate pipe-side unevenness support part whose spring properties can be adjusted separately from the pipe-side support part, the fitting force between the recess and convex part can be adjusted separately from the spring properties of the pipe-side support part, and the pair of temperature sensor mounting jigs can be fixed more stably.

[0014] The temperature sensor mounting structure of the seventh invention is characterized in that, in any of the fourth to sixth inventions, the pipe is fitted into the pipe side support portion of one of the pipes and the temperature sensor is fitted into the sensor side support portion of one of the pipes, and the other pipe is fitted into the pipe side support portion of the other pipe at a position spaced apart from the one pipe in the extension direction of the pipe, and when the other pipe is moved toward the one pipe in the extension direction of the pipe, the temperature sensor can be fitted into the sensor side support portion and the concave portion of the other pipe and the convex portion of the one pipe can be fitted into each other.

[0015] In other words, in this temperature sensor mounting structure, a pipe is fitted into one of the pipe side support parts and a temperature sensor is fitted into one of the sensor side support parts, and the other pipe is fitted into the other pipe side support part at a position spaced apart from one of the pipes in the extension direction of the pipe.When the other pipe is moved toward the one pipe in the extension direction of the pipe, the temperature sensor can be fitted into the sensor side support part and the recess of the other pipe and the protrusion of the one pipe can fit into each other, so that the pipe can be easily clamped and fixed with a pair of temperature sensor mounting jigs by sliding the other pipe toward the one pipe.

[0016] The temperature sensor mounting structure of the eighth invention is characterized in that, in the seventh invention, the convex portion of one of the sensor side support parts is also formed on the sensor side support part, and the other of the sensor side support parts is provided with a sensor side concave-convex support part having a concave portion that can be fitted together with the convex portion of the one of the sensor side support parts. In other words, in this temperature sensor mounting jig, the other is equipped with a sensor side uneven support part having a recess that can fit into the convex part of the one sensor side support part.By providing a sensor side uneven support part whose spring properties can be adjusted separately from the sensor side support part, the fitting force between the recess and convex part can be adjusted separately from the spring properties of the sensor side support part, and the pair of temperature sensor mounting jigs can be fixed more stably. Furthermore, by stacking the sensor side support part with the temperature sensor fitted inside by pressing it down from the outside with the sensor side concave / convex support part and fitting the concave and convex parts together, it is possible to prevent the sensor side support part from opening due to unexpected force.

[0017] The temperature sensor mounting structure of the ninth invention is characterized in that, in any of the fourth to sixth inventions, the piping is fitted into one of the piping side support parts and the one of the sensor side support parts is fitted into the temperature sensor, and the temperature sensor is further fitted into the other of the sensor side support parts, and the other of the two can be rotated around the axis of the temperature sensor to fit the piping into the piping side support part, and the convex part of the other and the concave part of the one can be fitted into each other.

[0018] In other words, with this temperature sensor mounting jig, a pipe is fitted into one of the pipe side support parts, one of the sensor side support parts is fitted into the temperature sensor, and the temperature sensor is further fitted into the other sensor side support part.The other can then be rotated around the axis of the temperature sensor to fit the pipe into the pipe side support part, and the convex part of the other and the concave part of the one fit together, so that by rotating the other, the pipe can be easily clamped and fixed with the pair of temperature sensor mounting jigs.

[0019] The temperature sensor mounting structure of the 10th invention is characterized in that, in the 9th invention, the sensor side support portion is provided in multiple pairs spaced apart from each other in the axial direction of the temperature sensor when the temperature sensor is inserted. In other words, in this temperature sensor mounting jig, multiple pairs of sensor side support portions are provided spaced apart in the axial direction of the temperature sensor with the temperature sensor embedded, so that the temperature sensor can be held at at least four points in its axial direction, resulting in more stable holding force and high heat conductivity to the temperature sensor. [Effects of the Invention]

[0020] According to the present invention, the following effects are achieved. In other words, the temperature sensor mounting structure of the present invention comprises a pair of temperature sensor mounting jigs molded from resin that are opposed to each other and sandwich a pipe and a temperature sensor in contact with the pipe between them, and a metal spring member that is attached to the opposed temperature sensor mounting jigs and urges the pair of temperature sensor mounting jigs in opposing directions.This means that the metal spring member can be positioned so that it does not come into contact with the pipe or the temperature sensor, making it less likely for galvanic corrosion to occur between the metal spring member and the temperature sensor, and providing a stable mounting force over the long term. Therefore, the temperature sensor mounting structure of the present invention can prevent dissimilar metal corrosion and ensure a stable holding force even with thermal history. [Brief explanation of the drawings]

[0021] [Figure 1] 1A is a perspective view showing a state before a pair of temperature sensor mounting jigs attached to a pipe are slid, and FIG. 1B is a perspective view showing a state after the spring members are attached after the slid in the first embodiment of the temperature sensor mounting structure according to the present invention. [Figure 2] 1A is a front view showing a state before a pair of temperature sensor mounting jigs attached to a pipe are slid, and FIG. 1B is a front view showing a state after the jigs have been slid and a spring member has been attached, in the first embodiment. [Figure 3] 1 is a side view showing a state in which a temperature sensor is attached to a pipe using a pair of temperature sensor attachment jigs and a spring member in the first embodiment. FIG. [Figure 4] FIG. 2 is a side view showing the temperature sensor mounting jig in the first embodiment. [Figure 5] FIG. 2 is a perspective view showing one of the temperature sensor mounting jigs in the first embodiment. [Figure 6] FIG. 4 is a perspective view showing the other temperature sensor mounting jig in the first embodiment. [Figure 7] FIG. 2 is a perspective view showing a spring member in the first embodiment. [Figure 8]FIG. 11 is an oblique view showing a second embodiment of the temperature sensor mounting structure according to the present invention, in which one of a pair of temperature sensor mounting jigs is attached to a pipe and a temperature sensor, and the other is attached only to the temperature sensor (a), and in which the temperature sensor is attached to the pipe using the pair of temperature sensor mounting jigs and a spring member (b). [Figure 9] FIG. 10 is a side view showing a state in which a temperature sensor is attached to a pipe using a pair of temperature sensor attachment jigs and a spring member in the second embodiment. [Figure 10] FIG. 10 is a side view showing the temperature sensor mounting jig in the second embodiment. [Figure 11] FIG. 10 is a side view showing a state in which one of a pair of temperature sensor mounting jigs is mounted to a pipe and a temperature sensor, and the other is mounted only to the temperature sensor, in the second embodiment. [Figure 12] FIG. 10 is a perspective view showing one of a pair of temperature sensor mounting jigs in the second embodiment. [Figure 13] FIG. 10 is a perspective view showing the other of the pair of temperature sensor mounting jigs in the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] A first embodiment of a temperature sensor mounting structure according to the present invention will be described below with reference to FIGS.

[0023] As shown in Figures 1 to 7, the temperature sensor mounting structure 1 of this embodiment is molded from resin and comprises a pair of temperature sensor mounting jigs 1A, 1B that are opposed to each other and sandwich a pipe P and a temperature sensor S in contact with the pipe P between them, and a spring member 10 that is attached to the opposed pair of temperature sensor mounting jigs 1A, 1B and biases the pair of temperature sensor mounting jigs 1A, 1B in opposing directions. The spring member 10 is a leaf spring made of metal.

[0024] In this embodiment, one 1A of the pair of temperature sensor mounting jigs 1A, 1B and the other 1B of the pair of temperature sensor mounting jigs each have a pipe side support portion 2 into which a pipe P can be fitted, and a sensor side support portion 3 into which a temperature sensor S in contact with the pipe P can be fitted.

[0025] The one side 1A has a protrusion 4a. The other side 1B is provided with a recess 4b into which the protrusion 4a of the other side 1A can be fitted when the other side 1B is opposed to the other side 1A and the pipe P and the temperature sensor S are sandwiched therebetween. In this embodiment, the temperature sensor mounting jigs 1A, 1B have a pipe P fitted into the pipe side support portion 2 of the one side 1A and a temperature sensor S fitted into the sensor side support portion 3 of the one side 1A, and further have a pipe P fitted into the pipe side support portion 2 of the other side 1B at a position separated from the one side 1A in the extension direction of the pipe P. When the other side 1B is moved in the extension direction of the pipe P toward the one side 1A, the temperature sensor S can be fitted into the sensor side support portion 3 and the recess 4b of the other side 1B and the protrusion 4a of the one side 1A can be fitted into each other.

[0026] The protrusions 4a of the one side 1A are formed on the piping side support part 2 and the sensor side support part 3. That is, the protrusions 4a of the one side 1A are a pair formed to protrude outward from the end of the piping side support part 2 and the end of the sensor side support part 3, respectively, and are protrusions with an L-shaped cross section. The other part 1B includes a pipe-side unevenness support part 7 having a recess 4b that can fit with the protrusion 4a of the pipe-side support part 2, and a sensor-side unevenness support part 9 having a recess 4b that can fit with the protrusion 4a of the sensor-side support part 3 of the other part 1A. That is, the recess 4b of the other part 1B is a pair formed by recessing the pipe-side unevenness support part 7 and the sensor-side unevenness support part 9. The recess 4b of the sensor-side unevenness support part 9 is an inner recess formed with a hook-shaped cross section, and the recess 4b of the pipe-side unevenness support part 7 is a recessed portion formed on the inside of the tip part.

[0027] The pair of temperature sensor mounting jigs 1A and 1B have the same shape. The sensor side support part 3 of the one side 1A has a protrusion 4a at its tip and is provided with an arc-shaped support part 3a into which the temperature sensor S can be fitted. The sensor side support part 3 has a sensor locking part 8 that abuts against the end of the temperature sensor S to position it when the temperature sensor S is fitted into the side end of the sensor side support part 3. The sensor locking portion 8 is formed in an arc shape at the end of the arc-shaped support portion 3a and protrudes radially inward.

[0028] The pair of temperature sensor mounting jigs 1A, 1B have an intermediate plate portion 6, with the pipe side support portion 2 continuing at the bottom and the sensor side support portion 3 continuing at the top, and are molded entirely from resin. Further, at the lower part of the intermediate plate part 6, a pipe side support part 2 and a pipe side support part 7 for irregularities are formed with a slit part 6d interposed therebetween.

[0029] The intermediate plate portion 6 has a portion 6a protruding laterally, and a support portion 7 for the piping side unevenness is formed continuously at the bottom of the protruding portion 6a, and a support portion 9 for the sensor side unevenness is formed continuously at the top of the protruding portion 6a. The intermediate plate portion 6 has increased rigidity due to the protruding stripes 6b that extend in the protruding direction of the protruding portions 6a and are formed on the outside with a convex cross section. The intermediate plate portion 6 also has a protrusion 6c on its inner surface that can be engaged with the pipe P when the pipe P is clamped between the pair of temperature sensor mounting jigs 1A, 1B.

[0030] The temperature sensor S is formed, for example, in a cylindrical shape and houses a temperature-sensing element (not shown) such as a thermistor element inside. As shown in Figures 1 and 2, the temperature sensor S has a pair of lead wires L connected to the internal temperature-sensing element and extending from one end to the outside. The outer peripheral surface of the temperature sensor S is made of a metal such as Al. The outer diameter of the pipe P is larger than the outer diameter of the temperature sensor S, and the pipe-side support portion 2 is curved along the outer peripheral surface of the pipe P. The arc-shaped support portion 3a of the sensor side support portion 3 is curved along the outer peripheral surface of the temperature sensor S with a smaller radius of curvature than the pipe side support portion 2, and has an arc-shaped cross section.

[0031] In this way, the pipe-side support part 2 is curved along the outer peripheral surface of the pipe P, and the sensor-side support part 3 is curved along the outer peripheral surface of the temperature sensor S with a smaller radius of curvature than the pipe-side support part 2, so the sensor-side support part 3, which has a small radius of curvature and can obtain a strong biasing force (spring force), can firmly attach to the temperature sensor S. Furthermore, because the pipe-side support part 2 has a larger radius of curvature than the sensor-side support part 3, the pipe-side support part 2 can be easily opened wide with a relatively weak force, making it easy to attach to thick pipes P. Furthermore, the pair of temperature sensor mounting jigs 1A, 1B are further biased from the outside by a spring member 10 that is attached after the pair of temperature sensor mounting jigs 1A, 1B are attached to the pipe P and the temperature sensor S, so it does not matter if the biasing force of the resin-molded pipe side support part 2 itself and the sensor side support part 3 itself is relatively weak.

[0032] The spring member 10 is made of metal such as SUS, and is attached so as not to come into contact with the temperature sensor S, the outer circumferential surface of which is made of metal such as Al. As shown in Figure 7, the spring member 10 has a bottom curved portion 10a into which the piping side support portion 2 and the piping side unevenness support portion 7 of a pair of temperature sensor mounting jigs 1A, 1B can be fitted, and a pair of upper curved portions 10b formed on both upper sides of the bottom curved portion 10a into which a pair of protrusion portions 6b can be fitted.

[0033] Next, a method for attaching the temperature sensor S to the pipe P using the temperature sensor attachment structure 1 will be described.

[0034] First, as shown in Figure 1(a), a pipe P is fitted into the pipe-side support part 2 of one of the pair of temperature sensor mounting jigs 1A, and a temperature sensor S is fitted into the sensor-side support part 3 of the other jigs 1A. Even when only the other jigs 1A are used, the temperature sensor S can be held in contact with the pipe P, but the holding force of the pipe-side support part 2 and the sensor-side support part 3 is set to be relatively weak so that they can be easily spread apart during mounting.

[0035] Therefore, the other 1B of the pair of temperature sensor mounting jigs 1A, 1B is positioned away from the first 1A in the extending direction of the pipe P, and the pipe P is fitted into the pipe-side support part 2 of the second 1B. Then, from this state, the second 1B is moved toward the first 1A in the extending direction of the pipe P (the direction of the arrow in Figure 1(a)), and the temperature sensor S is fitted into the sensor-side support part 3. Furthermore, the protruding portion 6a extends in the axial direction of the piping P when attached to the piping P, and when the other side 1B is slid toward the one side 1A, the protruding portion 6a is inserted between the piping side support portion 2 and the sensor side support portion 3 of the one side 1A. At this time, the convex portions 4a and concave portions 4b of the pair of temperature sensor mounting jigs 1A, 1B are fitted together and fixed.

[0036] That is, the pair of temperature sensor mounting jigs 1A, 1B are fitted together with their pair of recesses 4b overlapping the pair of protrusions 4a of the other in a state where they face each other. At this time, the sensor locking portion 8 of the other 1B abuts against the tip surface of the temperature sensor S, thereby positioning the tip of the temperature sensor S. The sensor locking portion 8 of the other 1A abuts against the rear end surface of the temperature sensor S, thereby positioning the rear end of the temperature sensor S. Furthermore, the bottom curved portions 10a of the spring member 10 are fitted into the pipe-side support portions 2 and the pipe-side unevenness support portions 7 of the pair of temperature sensor mounting jigs 1A, 1B, and the pair of upper curved portions 10b are fitted into the pair of protrusions 6b. In this state, the spring member 10 biases the pair of temperature sensor mounting jigs 1A, 1B toward each other.

[0037] In this way, the pair of temperature sensor mounting jigs 1A, 1B are mounted with the temperature sensor S and the piping P sandwiched between them, as shown in Figure 1(b) and Figure 3, and by further fitting the spring member 10 into the lower part of the pair of temperature sensor mounting jigs 1A, 1B, the pair of temperature sensor mounting jigs 1A, 1B are maintained in an opposing state, and the temperature sensor S can be firmly held in contact with the piping P.

[0038] As described above, the temperature sensor mounting structure 1 of this embodiment comprises a pair of temperature sensor mounting jigs 1A, 1B that are molded from resin and sandwich the pipe P and the temperature sensor S that is in contact with the pipe P while facing each other, and a spring member 10 that is attached to the pair of temperature sensor mounting jigs 1A, 1B that are facing each other and biases the pair of temperature sensor mounting jigs 1A, 1B toward each other.Since the temperature sensor mounting jigs 1A, 1B are made from resin, galvanic corrosion is less likely to occur between them and the temperature sensor S, and since the pair of temperature sensor mounting jigs 1A, 1B are biased by the spring member 10, a stable mounting force can be obtained over the long term.

[0039] Furthermore, since the pair of temperature sensor mounting jigs 1A, 1B sandwich the pipe P and the temperature sensor S from both sides, the heat of the pipe P can be efficiently transferred to the temperature sensor S. Furthermore, the pair of temperature sensor mounting jigs 1A, 1B that face each other and sandwich the pipe P hold the pipe P and the temperature sensor S from both sides, and by further applying force with the spring member 10, a higher holding force can be obtained compared to when fixing with only one jig.

[0040] Furthermore, since the spring member 10 is a leaf spring made of metal, it can be manufactured easily and at low cost, and a strong mounting force can be obtained for a long period of time due to a stable biasing force. It should be noted that the metal spring member 10 is attached to the pair of resin temperature sensor attachment jigs 1A, 1B and does not come into contact with the temperature sensor S, so that galvanic corrosion does not occur. Furthermore, since the pair of temperature sensor mounting jigs 1A, 1B have the same shape, by using two of the same parts, there is no need to manufacture parts with different shapes, and the cost per part can be reduced.

[0041] Furthermore, in a pair of temperature sensor mounting jigs 1A, 1B, one of the jigs 1A has a convex portion 4a when it is sandwiching the pipe P and the temperature sensor S, and the other jigs 1B has a concave portion 4b into which the convex portion 4a of the one 1A can be fitted when it is facing the other jigs 1A and sandwiching the pipe P.Therefore, the temperature sensor S can be easily mounted on the pipe P with stable and sufficient holding force due to the fitting force between the concave portion 4b and the convex portion 4a in addition to the spring force (spring force / elastic force) of the pipe side support part 2 against the fitted pipe P.

[0042] In particular, when a pipe P is fitted into the pipe side support portion 2 of the one side 1A and a temperature sensor S is fitted into the sensor side support portion 3 of the one side 1A, and the other side 1B is positioned away from the one side 1A in the extension direction of the pipe P and the pipe P is fitted into the pipe side support portion 2 of the other side 1B, when the other side 1B is moved toward the one side 1A in the extension direction of the pipe P, the temperature sensor S can be fitted into the sensor side support portion 3 and the recess 4b of the other side 1B and the protrusion 4a of the one side 1A can be fitted into each other, so that by sliding the other side 1B toward the one side 1A, the pipe can be easily fixed in a clamped state with the pair of temperature sensor mounting jigs 1A, 1B.

[0043] Furthermore, the other 1B is provided with a pipe side unevenness support part 7 having a recess 4b that can be fitted into the protrusion 4a of the pipe side support part 2. By separately providing the pipe side unevenness support part 7, whose spring property can be adjusted, separate from the pipe side support part 2, the fitting force between the recess 4b and the protrusion 4a can be adjusted separately from the spring property of the pipe side support part 2, and the pair of temperature sensor mounting jigs 1A, 1B can be fixed more stably.

[0044] Furthermore, the other 1B is provided with a sensor side uneven support part 9 having a recess 4b that can fit into the protrusion 4a of the sensor side support part 3 of the other 1A. By separately providing the sensor side uneven support part 9, whose spring property can be adjusted, separate from the sensor side support part 3, the fitting force between the recess 4b and the protrusion 4a can be adjusted separately from the spring property of the sensor side support part 3, and the pair of temperature sensor mounting jigs 1A, 1B can be fixed more stably. In addition, by stacking the sensor side support part 3 with the temperature sensor S fitted inside by pressing it down from the outside with the sensor side concave / convex support part 9 and fitting the concave part 4b and the convex part 4a together, it is possible to prevent the sensor side support part 3 from opening due to unexpected force.

[0045] Furthermore, the sensor side support part 3 is provided with a sensor locking part 8 that abuts against the end of the temperature sensor S to position it when the temperature sensor S is fitted into its side end, so that the sensor locking part 8 can prevent the temperature sensor S from shifting position from the sensor side support part 3 when the other part 1B is slid toward the one part 1A to fit the respective convex parts 4a and concave parts 4b together.

[0046] Next, a second embodiment of the temperature sensor mounting structure according to the present invention will be described below with reference to Figures 8 to 13. In the description of the following embodiment, the same components as those described in the above embodiment will be given the same reference numerals, and the description thereof will be omitted.

[0047] The difference between the second embodiment and the first embodiment is that in the first embodiment, the other 1B of a pair of temperature sensor mounting jigs 1A, 1B is slid along the piping P toward the other 1A, thereby placing the pair of temperature sensor mounting jigs 1A, 1B facing each other with the piping P and the temperature sensor S sandwiched between them, whereas in the temperature sensor mounting structure 21 of the second embodiment, the temperature sensor mounting jigs 21A, 21B are rotated relative to each other on the piping P, as shown in Figures 8 to 13, thereby placing the pair of temperature sensor mounting jigs 21A, 21B facing each other with the piping P and the temperature sensor S sandwiched between them.

[0048] That is, in the second embodiment, when a pipe P is fitted into the pipe side support portion 22 of one 21A of a pair of temperature sensor mounting jigs 21A, 21B, and the temperature sensor S is fitted into the sensor side support portion 23 of the one 21A, and the temperature sensor S is further fitted into the sensor side support portion 23 of the other 21B, the other 21B can be rotated around the axis C of the temperature sensor S to fit the pipe P into the pipe side support portion 22, and since the convex portion 24a of the other 21B and the concave portion 24b of the one of the temperature sensor mounting jigs 21A, 21B fit into each other, by rotating the other 21B, the pipe P can be easily fixed in a clamped state by the pair of temperature sensor mounting jigs 21A, 21B.

[0049] Of the pair of temperature sensor mounting jigs 21A, 21B, one 21A has a recess 24b and a protrusion 24a, and the other 21B has a protrusion 24a that can be fitted into the recess 24b of the one 21A and a recess 24b into which the protrusion 24a of the one 21A can be fitted, when facing the other 21A and sandwiching the piping P and the temperature sensor S therebetween. In this embodiment, a pair of temperature sensor mounting jigs 21A, 21B are configured so that, with a pipe P fitted into the pipe side support portion 22 of one 21A and a temperature sensor S fitted into one sensor side support portion 23, and the temperature sensor S fitted into the sensor side support portion 23 of the other 21B, the other 21B can be rotated around the axis C of the temperature sensor S to fit the pipe P into the pipe side support portion 22, and the convex portion 24a of the other 21B and the concave portion 24b of the one 21A fit into each other.

[0050] The recess 24b of the one side 21A is formed in the pipe side support part 22. That is, the recess 24b of the one side 21A is provided on the tip side of the pipe side support part 22, and the outer side is recessed. The other 21B is provided with a pipe-side unevenness support part 27 having a protrusion 24a that can fit into the recess 24b of the one 21A. That is, the protrusion 24a of the other 21B is provided at the tip of the pipe-side unevenness support part 27, and the inside thereof is a protrusion that can fit into the recess 24b of the one 21A.

[0051] The pair of temperature sensor mounting jigs 21A, 21B have an intermediate plate portion 26, the lower portion of which is continuous with the pipe side support portion 22 and the pipe side unevenness support portion 27, and the upper portion of which is continuous with the sensor side support portion 23. The pair of temperature sensor mounting jigs 21A and 21B have the same shape. Therefore, the one side 21A also has a pipe-side uneven support part 27 having a convex part 24a, and the other side 21B also has a pipe-side support part 22 having a concave part 24b. That is, the convex portion 24a of the one side 21A can be fitted into the concave portion 24b of the other side. The sensor side support portion 23 is curved along the outer peripheral surface of the temperature sensor S with a smaller radius of curvature than the pipe side support portion 22, so as to have an arc-shaped cross section.

[0052] Furthermore, the sensor-side supports 23 are provided in pairs spaced apart from each other in the axial direction of the temperature sensor S with the temperature sensor S fitted in. In this embodiment, two sensor-side supports 23 are provided on each of the pair of temperature sensor mounting jigs 21A, 21B. Therefore, the temperature sensor S is supported by four sensor-side supports 23. At the side end of the sensor side support portion 23, a sensor locking portion 28 for positioning the tip of the temperature sensor S is provided in an arc shape that protrudes radially inward. Further, at the lower part of the intermediate plate part 26, the pipe side support part 22 and the pipe side unevenness support part 27 are formed with the slit part 26d interposed therebetween.

[0053] As shown in Figures 1 and 9, the spring member 10 has a bottom curved portion 10a into which the piping side support portion 22 and the piping side unevenness support portion 27 of a pair of temperature sensor mounting jigs 21A, 21B can be fitted, and a pair of upper curved portions 10b formed on both upper sides of the bottom curved portion 10a into which the protrusion portions 6b can be fitted. The intermediate plate portion 26 has, on its inner surface, a protrusion 26c that can be engaged with the pipe P when the pipe P is clamped between the pair of temperature sensor mounting jigs 21A, 21B.

[0054] Next, a method for attaching the temperature sensor S to the pipe P using the temperature sensor attachment structure 21 will be described.

[0055] 11, the pipe P is fitted into the pipe-side support portion 22 of one 21A of a pair of temperature sensor mounting jigs 21A, 21B, and the sensor-side support portion 23 of the other 21A is fitted into the temperature sensor S. Even when only the other 21A is used, the temperature sensor S can be held in contact with the pipe P, but the holding force of the pipe-side support portion 22 and the sensor-side support portion 23 is set to be relatively weak so that they can be easily spread apart during mounting.

[0056] Therefore, the temperature sensor S is further fitted into the sensor side support portion 23 of the other 21B of the pair of temperature sensor mounting jigs 21A, 21B, and from this state, the other 21B is rotated around the axis C of the temperature sensor S to fit the piping P into the piping side support portion 22 of the other 21B from a state facing the one 21A. At this time, the recessed portions 24b of the pipe-side support portions 22 of the pair of temperature sensor mounting jigs 21A, 21B and the protruding portions 24a of the pipe-side uneven support portions 27 are fitted together and fixed.

[0057] That is, the pair of temperature sensor mounting jigs 21A, 21B face each other, with their pipe-side uneven support parts 27 overlapping the pipe-side support parts 22 of the other, and their respective recessed parts 24b and protruding parts 24a fitting together. Furthermore, the bottom curved portions 10a of the spring member 10 are fitted into the pipe-side support portions 22 and the pipe-side unevenness support portions 27 of the pair of temperature sensor mounting jigs 21A and 21B, and the pair of upper curved portions 10b are fitted into the pair of protrusions 26b. In this state, the spring member 10 biases the pair of temperature sensor mounting jigs 21A and 21B toward each other.

[0058] In this way, the pair of temperature sensor mounting jigs 21A, 21B are mounted in a state where they sandwich the temperature sensor S and the piping P, forming an approximately triangular shape when viewed from the side, as shown in Figures 8(b) and 9.Furthermore, by fitting the spring member 10 into the lower part of the pair of temperature sensor mounting jigs 21A, 21B, the pair of temperature sensor mounting jigs 21A, 21B are maintained in an opposing state, and the temperature sensor S can be firmly held in contact with the piping P.

[0059] In this manner, in the temperature sensor mounting structure 21 of this embodiment, the pipe P is fitted into the pipe side support portion 22 of the one side 21A, the temperature sensor S is fitted into the sensor side support portion 23 of the one side 21A, and the temperature sensor S is further fitted into the sensor side support portion 23 of the other side 21B. Then, the other side 21B can be rotated around the axis C of the temperature sensor S to fit the pipe P into the pipe side support portion 22, and the convex portion 24a of the other side 21B and the concave portion 24b of the one side 21A fit together, so that by rotating the other side 21B, the pipe P can be easily clamped and fixed between the pair of temperature sensor mounting jigs 21A, 21B.

[0060] In particular, the recess 24b of the one side 21A is formed in the piping side support part 22, and the other side 21B is provided with a piping side unevenness support part 27 having a protrusion 24a that can be fitted into the recess 24b of the one side 21A.By separately providing the piping side unevenness support part 27, whose spring property can be adjusted, separate from the piping side support part 22, the fitting force between the recess 24b and the protrusion 24a can be adjusted separately from the spring property of the piping side support part 22, and the pair of temperature sensor mounting jigs 21A, 21B can be fixed more stably.

[0061] In addition, by stacking the pipe side support part 22 with the pipe P fitted inside by pressing it down from the outside with the pipe side uneven support part 27 and fitting the recessed part 24b and the protruding part 24a together, it is possible to prevent the pipe side support part 22 from opening due to unexpected force. Furthermore, since the sensor side support portions 23 are provided in multiple pairs spaced apart from each other in the axial direction of the temperature sensor S with the temperature sensor S embedded therein, the temperature sensor S can be held at at least four points in its axial direction, resulting in more stable holding force and high heat conductivity to the temperature sensor S.

[0062] The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. [Explanation of symbols]

[0063] 1, 21...Temperature sensor mounting structure, 1A, 1B, 21A, 21B...Temperature sensor mounting jig, 1A, 21A...One of a pair of temperature sensor mounting jigs, 1B, 21B...The other of the pair of temperature sensor mounting jigs, 2, 22...Pipe side support portion, 3, 23...Sensor side support portion, 4a, 24a...Convex portion, 4b, 24b...Concave portion, 7, 27...Pipe side uneven support portion, 8, 28...Sensor locking portion, 9...Sensor side uneven support portion, 10...Spring member, P...Pipe, S...Temperature sensor

Claims

1. a pair of temperature sensor mounting jigs molded from resin, which are opposed to each other and sandwich a pipe and a temperature sensor in contact with the pipe between them; A temperature sensor mounting structure characterized by comprising a spring member attached to the pair of temperature sensor mounting jigs in the opposing state and biasing the pair of temperature sensor mounting jigs toward each other.

2. 2. The temperature sensor mounting structure according to claim 1, 10. A temperature sensor mounting structure, wherein the spring member is a leaf spring made of metal.

3. 3. The temperature sensor mounting structure according to claim 1, A temperature sensor mounting structure characterized in that the pair of temperature sensor mounting jigs have the same shape.

4. The temperature sensor mounting structure according to any one of claims 1 to 3, one of the pair of temperature sensor mounting jigs and the other of the pair of temperature sensor mounting jigs are pipe-side support portions into which a pipe can be fitted; a sensor-side support part into which the temperature sensor in contact with the piping can be fitted, The one of them has a protrusion, A temperature sensor mounting structure characterized in that the other has a recess into which the convex portion of the one can be fitted when the other is opposed to the one and sandwiches the piping and the temperature sensor.

5. 5. The temperature sensor mounting structure according to claim 4, A temperature sensor mounting structure characterized in that the sensor side support portion has a sensor locking portion that abuts against an end of the temperature sensor to position it when the temperature sensor is fitted into the side end of the sensor side support portion.

6. 6. The temperature sensor mounting structure according to claim 4, the one of the protrusions is formed on the pipe-side support portion, a temperature sensor mounting structure characterized in that the other of the two supports comprises a pipe-side uneven support portion having a recess that can be fitted with the protrusion of the pipe-side support portion;

7. The temperature sensor mounting structure according to any one of claims 4 to 6, The pipe is fitted into one of the pipe-side support parts, the temperature sensor is fitted into one of the sensor-side support parts, and the pipe is fitted into the other of the pipe-side support parts at a position spaced apart from the other of the pipes in the extending direction of the pipes, A temperature sensor mounting structure characterized in that when the other is moved toward the one in the direction of extension of the piping, the temperature sensor can be fitted into the sensor side support portion, and the recess of the other and the protrusion of the one can be fitted into each other.

8. 8. The temperature sensor mounting structure according to claim 7, the one of the protrusions is also formed on the sensor side support part, a temperature sensor mounting structure, characterized in that the other of the two is provided with a sensor-side uneven support portion having a recess that can be fitted with the protrusion of the sensor-side support portion of the one of the two.

9. The temperature sensor mounting structure according to any one of claims 4 to 6, the pipe is fitted into one of the pipe-side support parts, the temperature sensor is fitted into one of the sensor-side support parts, and the temperature sensor is fitted into the other sensor-side support part; A temperature sensor mounting structure characterized in that the other can be rotated around the axis of the temperature sensor to fit the piping into the piping side support portion, and the convex portion of the other and the concave portion of the one can be fitted into each other.

10. 10. The temperature sensor mounting structure according to claim 9, A temperature sensor mounting structure, characterized in that the sensor-side support portions are provided in pairs spaced apart from each other in the axial direction of the temperature sensor with the temperature sensor fitted therein.

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