JP4251087B2 - Sensor and temperature sensor - Google Patents

Description

  The present invention relates to a sensor in which a cylindrical metal case that houses a detection element is fixed to a three-dimensional base, and in particular, an attachment portion for attachment to an evaporator and a cylindrical metal case that houses a temperature detection element. The present invention relates to a temperature sensor vertically installed on a base.

In an automobile air conditioner, a temperature sensor is attached to an evaporator in order to measure the temperature of a refrigerant. The structure of the evaporator temperature sensor will be described with reference to FIG.
7 (A) is a plan view of the evaporator temperature sensor 110, FIG. 7 (B) is a side view of the side of the arrow b in FIG. 7 (A), and FIG. 7 (C) is a plan view of FIG. 7 (A). FIG. 7D is a side view on the c arrow side, and FIG. 7D is a dd cross-sectional view of FIG.
The evaporator temperature sensor 110 includes an aluminum case 130 that accommodates the temperature sensor 32 at the tip of a substantially cubic base 120 and an attachment 126 that is attached to the evaporator. The attaching portion 126 is formed with a retaining groove 126a. The harness 40 connected to the signal line 42 from the temperature sensor is taken out from the standing wall 120c of the base 120. The evaporator temperature sensor 110 accommodates the temperature sensor 32, accommodates the aluminum case 130 filled with the filler 122 in a mold, and is manufactured by resin insert molding.

FIG. 8 shows a state where the evaporator temperature sensor 110 is attached to the evaporator 50.
The evaporator temperature sensor 110 is attached by piercing the aluminum case 130 and the attachment portion 126 into the gap between the fins 52 of the evaporator 50.
Here, there are Patent Documents 1 to 4 as automobile air conditioners that use an evaporator temperature sensor.
JP 2002-212233 A JP-A-7-237440 JP-A-6-48168 JP-A-5-238253

  However, since heat of about 250 ° C. is applied when resin insert molding is performed, it is necessary to use a material having a heat resistance of 250 ° C. or more for the harness 40, which increases the cost of the evaporator temperature sensor. .

  The evaporator temperature sensor is attached at various positions depending on the vehicle type and the air conditioner case. Depending on the mounting position, the harness becomes very long and difficult to handle. Here, in insert molding, if the harness is long, it is difficult to set it in the molding die, and the harness is easily sandwiched in the die. On the other hand, it is necessary to prepare harnesses having a plurality of lengths so as to correspond to various attachment positions, but it is difficult to assemble harnesses having different lengths by insert molding. For this reason, it is difficult to automate, and the manufacturing cost is increased due to manual work.

  On the other hand, if the harness 40 is not fixed to the base portion 120 by insert molding, the harness 40 is easily bent at the root portion pulled out from the base portion 120, and the root portion is caused by vibration during driving of the automobile and vibration of the air conditioner compressor. It is expected that a disconnection will occur.

Furthermore, if the position of the harness 40 with respect to the evaporator temperature sensor 110 is not determined, it is necessary to correct the bending of the harness 40 when the evaporator temperature sensor 110 is attached to the air conditioner case. For this reason, the subject that it is difficult to automate mounting | wearing of the evaporator temperature sensor 110 arises. This mounting operation will be described with reference to FIG.
After attaching the evaporator temperature sensor 110 to the evaporator 50 housed in the air conditioner case 60, the harness 40 is put in the groove 64, and then the lids 62A and 62B are closed to complete the operation. If the position of the harness 40 is not determined during this work, workability is deteriorated. Moreover, unless the position of the harness 40 is determined, automatic assembly becomes difficult.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a sensor and a temperature sensor that can fix a cylindrical metal case without performing insert molding. is there.

In order to achieve the above object, claim 1 is a sensor 10 in which a cylindrical metal case 30 accommodating a detection element 32 at a distal end is fixed to a three-dimensional base 20,
The cylindrical metal casing 30 is provided with a flange portion 30a formed by increasing the outer diameter of the opening 30c near the distal portion opposite the cylindrical metal case,
The base portion 20 has a through hole 22a through which the tip of the cylindrical metal case 30 is inserted into the upper surface 20a, and a flange portion of the cylindrical metal case 30 that is in communication with the through hole 22a directly below the through hole 22a. includes a hollow portion 22c that houses the 30a, a hook portion 22d projecting inwardly directly under the hollow part 22c, a,
Inserted into the through hole 22a of the cylindrical metal casing 30 of the tip is the base 20, in the state of being housed a flange portion 30a of the cylindrical metal casing 30 in the hollow portion 22c of the base 20, the hook portion 22d has the cylindrical in Rukoto to adjust the engagement opening 30c of the metal case 30, and technical features that secure the cylindrical metal case 30 to the base portion 20.

The second aspect of the present invention is a temperature sensor in which a cylindrical metal case 30 that accommodates the temperature detecting element 32 at a tip end and an attachment portion for attachment to a member to be measured are vertically erected on a three-dimensional base portion 20. And
The cylindrical metal casing 30 is provided with a flange portion 30a formed by increasing the outer diameter of the opening 30c near the distal portion opposite the cylindrical metal case,
The base 20 includes a first through hole 22a for inserting vertically the tip of the cylindrical metal casing 30 with respect to the top surface 20a on the upper surface 20a, the first through hole 22a and the communicating directly under the first through hole 22a A hollow portion 22c for housing the flange portion 30a of the cylindrical metal case 30, a second through hole 22e for inserting the cylindrical metal case 30 directly under the hollow portion 22c, and an inner side of the second through hole 22e. A protruding flange 22d ,
The tip of the cylindrical metal casing 30 is inserted through the first through hole 22a of the base 20, in a state in which the hollow portion 22c is accommodated a flange portion 30a of the cylindrical metal casing 30 of the base 20, the hook portion 22d are in Rukoto to adjust the engagement opening 30c of the cylindrical metal casing 30, and technical features that secure the cylindrical metal case 30 to the base portion 20.

  According to the first aspect, the flange 30a is provided by increasing the outer diameter in the vicinity of the opening 30c on the opposite side of the tip of the cylindrical metal case 30. On the other hand, the three-dimensional base 20 is provided with a through hole 22a through which the cylindrical metal case 30 is inserted perpendicularly to the upper surface 20a on the upper surface 20a, and the cylindrical metal case 30 that communicates with the through hole 22a immediately below the through hole 22a. The hollow part 22c which accommodates this flange part 30a is provided, and the collar part 22d which protrudes inside is provided just under the hollow part 22c. Then, the tip of the cylindrical metal case 30 is inserted into the through hole of the base portion 20, the flange portion 30a of the cylindrical metal case 30 is accommodated in the hollow portion 22c of the base portion 20, and the opening 30c of the cylindrical metal case 30 is engaged with the flange portion 22d. By joining, the cylindrical metal case 30 is fixed to the base portion 20. That is, the cylindrical metal case 30 can be fixed without performing insert molding because the cylindrical metal case 30 can be fixed by piercing the through hole 22a of the base portion 20. In addition, since insert molding is not performed, the harness is not required to have heat resistance that can withstand the insert, and a versatile and inexpensive harness can be used.

  In the temperature sensor according to the second aspect, the flange 30a is provided by increasing the outer diameter in the vicinity of the opening 30c on the opposite side of the tip of the cylindrical metal case 30. On the other hand, the three-dimensional base 20 is provided with a first through hole 22a through which the cylindrical metal case 30 is inserted perpendicularly to the upper surface 20a on the upper surface 20a, and the first through hole 22a and the first through hole 22a. A hollow portion 22c for accommodating the flange portion 30a of the communicating cylindrical metal case 30 is provided, and a second through hole 22e for allowing the cylindrical metal case 30 to be inserted directly under the hollow portion 22c and inside the second through hole 22e. A protruding flange portion 22d is provided. And the front-end | tip of the cylindrical metal case 30 is inserted in the 1st through-hole 22a of the base 20, The flange part 30a of the cylindrical metal case 30 is accommodated in the hollow part 22c of the base 20, and the opening 30c of the cylindrical metal case 30 is made into a collar part. The cylindrical metal case 30 is fixed to the base 20 by being engaged with 22d. That is, the cylindrical metal case 30 can be fixed without performing insert molding because the cylindrical metal case 30 can be fixed by piercing the first through hole 22a of the base portion 20. In addition, since insert molding is not performed, the harness is not required to have heat resistance that can withstand the insert, and a versatile and inexpensive harness can be used.

  In the temperature sensor according to the third aspect, since the opening 30c of the cylindrical metal case 30 is tapered and the end thereof is sharpened, the opening 30c is formed in the flange portion 22d integrally formed as a part of the base 20 with resin. The bite and the cylindrical metal case 30 can be firmly fixed to the base 20.

  In the temperature sensor according to the fourth aspect, since the cylindrical metal case 30 is sandwiched between the pair of flange portions 22d, the cylindrical metal case 30 can be firmly fixed to the base portion 20. Further, a flange portion 22d is provided in a direction perpendicular to the longitudinal direction of the groove portion 22f for accommodating the harness on the lower surface 20b of the base portion 20, that is, at a position far from the harness accommodating position (groove portion). For this reason, the harness does not interfere with the flange portion 22d at the time of attachment, and the attachment of the cylindrical metal case 30 to the base portion 20 can be easily performed.

  According to the fifth aspect of the present invention, a substantially bar-shaped guide portion protruding perpendicularly to the standing wall of the base portion 20 is provided, and the guide portion 28 and the harness 40 are accommodated in the tube 44 so that the harness 40 is brought into contact with the guide portion 28. Fix in state. That is, the harness 40 can be fixed to the base 20 without using insert molding. For this reason, the harness 40 becomes difficult to bend at the root portion taken out from the base portion 20 due to the rigidity of the guide portion 28, and the wire 40 is not disconnected. Further, since the position of the harness is constant with respect to the temperature sensor, the harness does not get in the way and the temperature sensor can be automatically assembled.

  In the sixth aspect, the guide portion 28 is preferably provided with a rib 28 a having an outer diameter larger than the inner diameter of the tube 44. For this reason, it becomes difficult for the tube 44 to come off due to the resistance of the ribs 28 a, and by fixing the harness 40 to the guide portion 28 with the tube 44, the harness 40 is not disconnected at the root portion taken out from the base portion 20.

  According to the seventh aspect, since the harness 40 is sandwiched between the two guide portions 28A and 28B, the harness 40 can be firmly fixed by the guide portion 28.

  In Claim 8, since the tip of the tube 44 is accommodated in the ring-shaped groove 24 of the standing wall 20 c of the base portion 20, the tube 44 is difficult to come out, and the harness 40 is fixed to the guide portion 28 with the tube 44. The harness 40 is not disconnected at the root portion taken out from the cable.

[First embodiment]
A first embodiment in which the temperature sensor of the present invention is applied to an evaporator temperature sensor will be described with reference to FIGS.
1A is a plan view of an evaporator temperature sensor according to the first embodiment of the present invention, FIG. 1B is a side view of the side of the arrow b in FIG. 1A, and FIG. ) Is a side view on the c arrow side of FIG. 1 (A), and FIG. 1 (D) is a bottom view.
As shown in FIG. 1B, the evaporator temperature sensor 10 includes a substantially cubic base 20 having an upper surface 20a, a lower surface 20b, and an upright wall 20c, and an evaporator 50 that is erected vertically to the upper surface 20a of the base 20. An attachment portion 26 for attachment and an aluminum case 30 erected perpendicularly to the upper surface 20a of the base portion 20 are included. The mounting portion 26 has a sharp tip, and a side surface 26a is provided with a barb 26a (see FIG. 1C).

  2A is an ee cross-sectional view of the evaporator temperature sensor 10 shown in FIG. 1B, and FIG. 2B is a cross-sectional view showing the base 20 in FIG. 2A. 2C is a cross-sectional view showing the aluminum case 30 in FIG. 2A, and FIG. 2D is an enlarged view of a portion surrounded by a circle in FIG. 2A. As shown in FIG. 2 (C), the aluminum case 30 is formed in a bag shape having an opening 30c at the lower end, and a flange portion 30a having a diameter larger than the tip side is formed at the upper part from the opening 30c. A stepped portion 30b having a crank-like cross section is formed on the upper portion of the flange portion 30a. A temperature detection element 32 is placed in the vicinity of the tip of the aluminum case 30 and connected to the outside through the signal line 42 and the harness 40 from the opening 30c. The aluminum case 30 is filled with a filler 36.

  As shown in FIG. 2B, the base 20 is provided with a first through hole 22a through which the aluminum case 30 is inserted perpendicularly to the upper surface 20a. The first through hole 22a is provided directly below the first through hole 22a. A hollow portion 22c for receiving the flange portion 30a of the aluminum case 30 communicating with the first through hole 22a is provided. The hollow portion 22c is a cylindrical space corresponding to the flange portion 30a, and includes a straight wall 22cw and an abutting portion 22cc formed of a flat surface that comes into contact with the stepped portion 30b. Immediately below the hollow portion 22c, there are provided a second through hole 22e for inserting the aluminum case 30 and a hook-shaped flange portion 22d projecting inside the second through hole 22e. As shown in FIG. 1D, a pair of flanges 22d are provided so as to extend in the central direction of the second through hole 22e. In the first embodiment, a pair of flanges 22d is provided, but there may be one or three or more.

  As shown in FIGS. 1D and 1C, a groove 22 f for accommodating the harness 40 is formed on the lower surface 22 b of the base 20 along the longitudinal direction of the base 20.

  The aluminum case 30 shown in FIG. 2 (C) is attached to the base 20 shown in FIG. 2 (B) by inserting the tip of the aluminum case 30 into the first through hole 22a of the base 20 and the hollow portion of the base 20. The aluminum case 30 is positioned by accommodating the flange portion 30a of the aluminum case 30 in 22c and bringing the step portion 30b into contact with the abutting portion 22cc. In this state, the aluminum case 30 is fixed to the base portion 20 by engaging the opening 30c of the aluminum case 30 with the flange portion 22d. That is, the aluminum case 30 can be fixed to the base 20 without performing insert molding because the aluminum case 30 is fixed by being pierced into the first through hole 22a of the base 20. In addition, since insert molding is not performed, the harness is not required to have heat resistance that can withstand the insert, and a versatile and inexpensive harness can be used.

  Further, since insert molding is not performed, the aluminum case 30 to which the harnesses 40 of various lengths are attached can be easily assembled to the base 20. For this reason, it is possible to automatically assemble the harness case 40 having various lengths, in particular, the aluminum case 30 having the long harness 40 to the base 20.

  As shown in FIG. 2D, which is an enlarged view of a circled portion in FIG. 2A, the opening 30c of the aluminum case 30 is provided with a taper to sharpen the end. For this reason, the opening 30c can bite into the flange 22d integrally formed as a part of the base portion 20 with resin, and the aluminum case 30 can be fixed to the base portion 20 with a holding strength equivalent to that of insert molding.

  In the first embodiment, as shown in FIG. 1D, the aluminum case 30 is sandwiched between the pair of flange portions 22 d, so that the aluminum case 30 can be firmly fixed to the base portion 20. Further, a flange portion 22d is provided in a direction perpendicular to the longitudinal direction of the groove portion 22f for accommodating the harness 44 on the lower surface 20b of the base portion 20, that is, at a position far from the accommodation position (groove portion) of the harness 44. For this reason, the harness 44 does not interfere with the flange portion 22d at the time of attachment, and the attachment of the aluminum case 30 to the base portion 20 can be easily performed.

  In the evaporator temperature sensor 10 of the first embodiment, since the aluminum case 30 that is a good heat conductor is used as the aluminum case, the temperature of the evaporator 50 can be transmitted to the temperature detection element 32 in a short time.

[Second Embodiment]
An evaporator temperature sensor 10 according to a second embodiment of the present invention will be described with reference to FIGS. 3 and 4.
FIG. 3A is a plan view of an evaporator temperature sensor according to the second embodiment of the present invention, FIG. 3B is a side view of the side of the arrow b in FIG. 3A, and FIG. ) Is a side view on the c arrow side of FIG. 3 (A), and FIG. 3 (D) is a bottom view.
The evaporator temperature sensor 10 of the second embodiment is the same as that of the first embodiment described above with reference to FIGS. However, in the second embodiment, a substantially rod-shaped guide portion 28 that protrudes perpendicularly to the standing wall 20 c is provided along the harness 40. A rib 28 a having an outer diameter larger than the inner diameter of the vinyl tube 44 is provided at a substantially central position of the guide portion 28.

  The guide part 28 and the harness 40 are accommodated in the end part of the vinyl tube 44 for harness protection. Here, the harness 40 is fixed in contact with the guide portion 28 by being accommodated in the vinyl tube 44. The size of the rib 28 a is set so as to play a role of preventing the vinyl tube 44 from coming off.

The operation of mounting the evaporator temperature sensor 10 of the second embodiment on the evaporator 50 will be described with reference to FIG.
The evaporator temperature sensor 10 is mounted by inserting the attachment portion 26 and the aluminum case 30 into the gaps between the fins 52 at predetermined positions of the evaporator 50 housed in the air conditioner case 60. By attaching the evaporator temperature sensor 10 to a predetermined position, the vinyl tube 44 that accommodates the harness is accommodated in the groove 64. Thereafter, the work is completed by closing the lids 62A and 62B. In the second embodiment, if the position of the evaporator temperature sensor 10 is determined, the position of the vinyl tube 44 (harness) is determined, so that the evaporator temperature sensor 10 can be automatically assembled to the air conditioner case 60.

  In the evaporator temperature sensor 10 according to the second embodiment, a substantially rod-shaped guide portion 28 that protrudes perpendicularly to the standing wall 20c of the base portion 20 is provided, and the guide portion 28 and the harness 40 are accommodated in the vinyl tube 44. The harness 40 is fixed to the guide portion 28 in a contact state. That is, instead of fixing the harness 40 by insert molding, the harness 40 can be fixed to the base 20 by assembly. For this reason, the harness 40 is difficult to bend at the root portion taken out from the base portion 20 due to the rigidity of the guide portion 28, and is not disconnected by vibrations of the engine, the air conditioner compressor, and the like. Moreover, since the position of the harness 40 is constant with respect to the evaporator temperature sensor 10, the harness 40 is not obstructed, and the evaporator temperature sensor 10 can be automatically assembled. In the second embodiment, since the attachment portion 26 includes a retaining return 26a, the return 26a is engaged by piercing the attachment portion 26 into the cooling fin of the evaporator, and the evaporator temperature sensor 10 is connected to the cooling fin of the evaporator 50. 52 can be easily attached.

  Further, since the rib 28 a having an outer diameter larger than the inner diameter of the vinyl tube 44 is provided in the guide portion 28, the vinyl tube 44 is difficult to be removed due to the resistance of the rib 28 a, and the harness 40 is connected to the guide portion 28 by the vinyl tube 44. By fixing the harness 40, the harness 40 is not disconnected at the root portion taken out from the base 20.

  The mounting position of the evaporator temperature sensor on the evaporator varies depending on the type of the evaporator, the shape of the air conditioner case, and the like. However, the evaporator temperature sensor 10 according to the second embodiment can be mounted at various positions by changing the length of the vinyl tube 44. Therefore, the evaporator temperature sensor 10 can have versatility.

[First Modification of Second Embodiment]
An evaporator temperature sensor 10 according to a first modification of the second embodiment will be described with reference to FIG.
FIG. 5A is a plan view of an evaporator temperature sensor according to a first modification of the second embodiment, and FIG. 5B is a side view on the side of arrow b in FIG. (C) is a side view on the c arrow side of FIG. 5 (A), and FIG. 5 (D) is a bottom view.
The evaporator temperature sensor 10 of the first modified example of the second embodiment is the same as that of the second embodiment except for the configuration of the guide portion 28, and therefore only the guide portion 28 will be described. Here, in the second embodiment, the guide portion 28 is formed in a single rod shape. However, in the first modified example of the second embodiment, as shown in FIG. 5A, two guide portions 28 are provided. Rod-shaped guide members 28A and 28B, and the harness 40 is sandwiched between the guide members 28A and 28B.

  As shown in FIG. 5B, the guide member 28B on one side is provided with a rib 28a having a large outer diameter at a substantially central position.

  In the evaporator temperature sensor 10 of the first modified example of the second embodiment, the harness 40 is sandwiched between the guide members 28A and 28B, so that the harness 40 can be more firmly fixed by the guide portion 28.

[Second Modification of Second Embodiment]
An evaporator temperature sensor 10 according to a second modification of the second embodiment will be described with reference to FIG.
6 (A) is a plan view of an evaporator temperature sensor according to a second modification of the second embodiment, and FIG. 6 (B) is a side view on the b arrow side of FIG. 6 (A). (C) is a side view on the c arrow side of FIG. 6 (A), and FIG. 6 (D) is a bottom view.
In the evaporator temperature sensor 10 of the second modified example of the second embodiment, a ring-shaped groove 24 for accommodating the distal end portion of the vinyl tube 44 is formed on the standing wall 20 c of the base portion 20. Other configurations are the same as those of the second embodiment.

  In the second modified example of the second embodiment, since the tip of the vinyl tube 44 is accommodated in the ring-shaped groove 24 of the standing wall 20c of the base portion 20, it is difficult for the vinyl tube 44 to come out, and the harness is attached to the guide portion 28 by the vinyl tube 44. By fixing 40, the harness 40 is not disconnected at the root portion taken out from the base 20. In the second modification of the second embodiment, the guide unit 28 has the same configuration as that of the second embodiment. However, the configuration of the guide unit 28 of the first modification of the second embodiment is the same as that of the second embodiment. Of course, it is also possible to apply the groove of the second modified example.

  In the above-described embodiment, an example in which the temperature sensor of the present invention is applied to an evaporator temperature sensor has been described. However, for example, the present invention can also be applied to a temperature sensor for a radiator, and can also be applied to various sensors. . Furthermore, in the above-described embodiment, an example in which an aluminum case is used as the cylindrical metal case has been described. However, it goes without saying that the configuration of the present invention can also be applied to assembly of a cylindrical metal case made of copper or stainless steel, for example. .

1A is a plan view of an evaporator temperature sensor according to the first embodiment of the present invention, FIG. 1B is a side view of the side of the arrow b in FIG. 1A, and FIG. ) Is a side view on the c arrow side of FIG. 1 (A), and FIG. 1 (D) is a bottom view. 2A is an ee cross-sectional view of the evaporator temperature sensor shown in FIG. 1B, and FIG. 2B is a cross-sectional view showing the base in FIG. 2A. (C) is sectional drawing which shows the aluminum case in FIG. 2 (A), FIG.2 (D) is an enlarged view of the part enclosed with the circle | round | yen in FIG. 2 (A). FIG. 3A is a plan view of an evaporator temperature sensor according to a first modification of the second embodiment, and FIG. 3B is a side view on the side of arrow b in FIG. (C) is a side view on the c arrow side of FIG. 5 (A), and FIG. 3 (D) is a bottom view. It is a perspective view showing the state where the evaporator temperature sensor concerning the 1st modification of a 2nd embodiment was attached to the evaporator. FIG. 5 (A) is a plan view of an evaporator temperature sensor according to a first modification of the first modification of the second embodiment, and FIG. 5 (B) is a side view on the b arrow side of FIG. 5 (A). FIG. 5C is a side view of the side of the arrow c in FIG. 5A, and FIG. 5D is a bottom view. 6 (A) is a plan view of an evaporator temperature sensor according to a second modification of the second embodiment, and FIG. 6 (B) is a side view on the b arrow side of FIG. 6 (A). (C) is a side view on the c arrow side of FIG. 6 (A), and FIG. 6 (D) is a bottom view. 7 (A) is a plan view of an evaporator temperature sensor according to the prior art, FIG. 7 (B) is a side view on the side of arrow b in FIG. 7 (A), and FIG. 7 (C) is FIG. It is a side view by the side of arrow c of A), and FIG.7 (D) is dd sectional drawing of FIG.7 (C). It is a perspective view which shows the state by which the evaporator temperature sensor which concerns on a prior art was attached to the evaporator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Evaporator temperature sensor 20 Base part 20a Upper surface 20b Lower surface 20c Standing wall 22a 1st through-hole 22c Hollow part 22d Ridge part 22e 2nd through-hole 22f Groove part 24 Groove 26 Mounting part 28 Guide part 28a Rib 30 Aluminum part 30a Flange part 30b 30c Opening 32 Temperature detection element 40 Harness 44 Vinyl tube 50 Evaporator

Claims (8)

It is a sensor formed by fixing a cylindrical metal case that houses a detection element at the tip to a three-dimensional base,
The cylindrical metal casing is provided with a flange portion formed by increasing the outer diameter of the opening near the distal end opposite the cylindrical metal case,
The base includes a hollow portion for accommodating a hole for inserting the tip of the cylindrical metal casing on the upper surface on the upper surface, the flange portion of the cylindrical metal casing which communicates with the vent hole immediately below the hole, the and a hook projecting inwardly directly under the hollow part,
The tip of the cylindrical metal casing is inserted into the through hole of the base, in a state where the was accommodating the flange portion of the cylindrical metal casing in the hollow portion of the base portion, the hook portion is to engage the opening of the cylindrical metal casing Thus, the cylindrical metal case is fixed to the base. A temperature sensor in which a cylindrical metal case that houses a temperature detection element at a tip portion and an attachment portion for attachment to a member to be measured are vertically erected on a three-dimensional base,
The cylindrical metal casing is provided with a flange portion formed by increasing the outer diameter of the opening near the distal end opposite the cylindrical metal case,
The base includes a first through-hole that allows the top end of the cylindrical metal case to be inserted perpendicularly to the top surface on the top surface, and a cylindrical metal case that communicates with the first through-hole directly below the first through-hole. A hollow portion that accommodates the flange portion, a second through-hole for allowing the cylindrical metal case to be inserted directly under the hollow portion, and a flange that protrudes inside the second through-hole ,
The tip of the cylindrical metal casing is inserted through the first through hole of the base, while being accommodating the flange portion of the cylindrical metal casing in the hollow portion of the base portion, engaging said hook is in an opening of the cylindrical metal casing in case you Rukoto, a temperature sensor, characterized in that to fix the cylindrical metal casing to the base unit. Temperature sensor according to claim 2, characterized in that the opening of the cylindrical metal case, digits set the taper to pointed ends The base includes a groove for receiving a harness from the temperature detection element on a lower surface ,
4. The temperature sensor according to claim 2, wherein a pair of the flanges are provided in a direction perpendicular to the longitudinal direction of the groove. The base portion includes a substantially bar-shaped guide portion that protrudes perpendicularly to the standing wall of the base portion,
Harness from said temperature detecting element, it is ejected from the vertical wall of the base through the said cylindrical metallic casing,
The tube housing the said the front Symbol guide portion harness, temperature sensor according to claim 2 or claim 3, characterized in that fixed the harness guide portion in a contact state. 6. A temperature sensor according to claim 5, wherein said guide portion is provided with a rib for preventing the tube from coming off. The temperature sensor according to claim 5 or 6, wherein the guide part is divided into two parts, and the harness is accommodated in the divided central part. The temperature sensor according to any one of claims 5 to 7, wherein a ring-shaped groove is provided in the standing wall of the base portion so as to accommodate the tip of the tube.

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