JP2002081720A - Sensor fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sensor fixture capable of installing to a pipe surely without slipping from the pipe. SOLUTION: A sensor fixture 10 is formed in such a manner that the U-shaped part 2 of a pipe 1 and a sensor 5 are inserted and pinched between the mounting plate for the sensor 11 and the mounting plate for the pipe 15 opposed to the mounting plate for the sensor 11. A bore 18, in which the surface 2a outside the U-shaped part 2 to be inserted fits, is formed in this sensor fixture 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture for a sensor mounted on a pipe of an air conditioner or the like.

[0002]

2. Description of the Related Art In an air conditioner, for example, a sensor is provided at an intermediate position of a pipe through which a refrigerant gas flows, and plays an important role in controlling a necessary air conditioner by detecting a pipe temperature. In that case, a sensor attachment for integrally attaching the sensor to the refrigerant gas pipe is employed.

[0003] A conventional sensor mounting device is, for example, as shown in FIGS. 5 and 6, mounted on a U-shaped portion 2 that is bent and curved so that a pipe 1 is folded. By bending a thin metal plate having the property, it is formed substantially in a U-shape in cross section as a whole. A sensor mounting plate 110 for mounting and holding the sensor 5 is formed on one side thereof, and a pipe mounting plate 150 is formed on the other side opposite to the sensor mounting plate 110.

As shown in FIG. 5, a semicircular arc portion 120 which is partially curved outward and is formed in a semicircular arc shape is formed on the sensor mounting plate 110 at a position upward from the lower end. . Further, an elastic engagement piece 130 is provided below the center of the semicircular arc portion 120 in the depth direction of the paper surface in FIG. 5 so as to extend the arc of the semicircular arc portion 120 to the inside of the sensor mounting plate 110. Here, the arc formed by the semicircular arc portion 120 and the elastic engagement piece 130 is formed to be slightly longer than the semicircle. On the other hand, the pipe mounting plate 15
As shown in FIG. 5, 0 is formed in an outwardly curved arc shape having a radius of curvature larger than the diameter of the pipe 1.

The sensor holding cylinder 4 is inserted into and engaged with an arc-shaped curved portion formed by the semicircular arc portion 120 and the elastic engagement piece 130, and the temperature sensor main body 3 is inserted into the sensor holding cylinder 4. The temperature sensor main body 3 and the sensor holding cylinder 4 constitute a sensor 5, and the sensor 5 is urged and held by the semicircular arc portion 120 by the elastic force of the elastic engaging piece 130. Thus, the semi-circular part 1
When the sensor holding cylinder 4 is engaged with 20,
When the U-shaped portion 2 of the pipe 1 is inserted into a space sandwiched between the sensor mounting plate 110 and the pipe mounting plate 150, the sensor mounting plate 110 and the pipe mounting plate 150 are pushed apart and separated from each other. Therefore, an elastic force acts on the U-shaped portion 2 toward the sensor holding cylinder 4. In this way, the sensor mounting plate 110 and the pipe mounting plate 150 cooperate to clamp the U-shaped portion 2 so as to press it against the sensor holding cylinder 4. By inserting the temperature sensor main body 3 into the sensor holding cylinder 4, the temperature sensor main body 3 detects the temperature of the pipe 1 via the sensor holding cylinder 4.

[0006]

However, the above-mentioned sensor mounting device of the prior art is mounted on the U-shaped portion 2 provided on the pipe 1 in a suspended state, and therefore has the following problems. Was. That is, due to the vibration of the air conditioner or the like, the sensor attachment slides off the outer surface 2a of the U-shaped portion 2 as shown by a dashed line in FIG. 6, and the thermal contact between the sensor 5 and the pipe 1 becomes poor. The problem is that accurate temperature detection cannot be performed.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, it is an object of the present invention to provide a sensor attachment which can be securely attached to a pipe without being displaced from the pipe.

[0008]

Means for Solving the Problems To solve the above problems, the present invention employs the following means. Claim 1
According to the present invention, a sensor mounting plate for mounting a sensor, and a pipe mounting plate extending from the sensor mounting plate and bent to face the sensor mounting plate are formed, and a pipe Is inserted into the space between the sensor mounting plate and the pipe mounting plate, and is sandwiched between the sensor mounting plate and the pipe mounting plate. In the sensor mounting fixture configured as described above, the pipe mounting plate,
A hollow hole is formed in a portion located outside the curved U-shaped portion so that an outer surface of the U-shaped portion is fitted.

With such a configuration, when the sensor mounting member is mounted on the U-shaped portion of the pipe, the outer surface of the U-shaped portion is fitted into the hollow of the pipe mounting plate.
Since the peripheral portion of the hollow hole is urged to the U-shaped portion by the elastic force acting on the U-shaped portion, the U-shaped portion does not come out of the hollow hole unless an external force exceeding this urging force is applied. The orientation of the fixture is maintained. Thus, U
The sensor attachment can be securely attached to the letter-shaped part,
The sensor detects U by vibration of air conditioner as in the prior art.
There is no risk of deviation from the character portion.

[0010] The hollow hole is formed in a part of the periphery thereof.
It has an elastic locking piece for locking the inner surface of the U-shaped portion. Thereby, when the sensor mounting member is mounted on the U-shaped portion, the elastic locking piece supports the inner surface of the U-shaped portion with elastic force, so that the mounting of the sensor mounting device to the U-shaped portion is more reliably performed. It can be.

[0011]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a state in which a sensor attachment according to the present invention is attached to a U-shaped portion, and FIG.
FIG. 3 is a side view showing an embodiment of the sensor mounting tool according to the present invention, FIG. 3 is a left side view of FIG. 2, and FIG. 4 is a right side view of FIG. In FIGS. 1 to 4, reference numeral 1 denotes a pipe connected to a heat exchanger or the like of an air conditioner, 2 denotes a U-shaped part formed by bending the pipe 1 so as to be folded, 5 denotes a sensor for detecting a temperature, Is a sensor attachment in this embodiment for attaching the sensor 5 to the U-shaped portion 2 of the pipe 1.

As shown in FIG. 2, the sensor mounting member 10 is formed in a substantially U-shape in cross section as a whole by bending a thin metal plate having elasticity. A sensor mounting plate 11 for holding the temperature sensor main body 3 is formed on one side, and extends from the sensor mounting plate 11 to extend from the sensor mounting plate 11.
And a pipe mounting plate 15 is formed on the other side.

As shown in FIG. 2, the sensor mounting plate 11 is formed with a semi-circular semi-circular portion 12 that is partially curved outwardly at a position halfway upward from the lower end. . Further, as shown in FIG. 4, the lower part of the center of the semi-circular part 12 is cut out at the lower part of the center of the semi-circular part 12, and the front end is bent toward the inside of the sensor fixture 10. The formed elastic engagement piece 13 is provided. Here, the arc formed by the semicircular arc portion 12 and the elastic engagement piece 13 is formed to be slightly longer than the semicircle.

At the tip of the sensor mounting plate 11, a guide piece 14 bent outward is provided, and the sensor mounting tool 10 sandwiched between the sensor mounting plate 11 and the pipe mounting plate 15 is provided. The guide serves as a guide when the sensor holding cylinder 4 is inserted into the space inside.

On the other hand, as shown in FIG. 2, the pipe mounting plate 15 is provided with a curved portion 16 formed in an arc shape bulging outward with a radius of curvature larger than the diameter of the pipe 1. Further, a guide portion 17 that is bent outward is provided at a distal end portion of the curved portion 16.

The pipe mounting plate 15 has a hollow 18 so that the outer surface 2a of the U-shaped portion 2 fits into a portion of the curved pipe 1 located outside the U-shaped portion 2. Is formed. As shown in FIGS. 1 to 3, the hollow 18 is formed by hollowing a lower central portion of the pipe mounting plate 15. As shown in FIG. 3, notches 21 and 21 are provided in the center of the upper part of the peripheral edge 19 a of the hollowed hole 18 so as to bite, respectively.
Elastic locking pieces 20 are formed with these notches 21 and 21 at both ends so that the portion sandwiched therebetween projects inward from the pipe mounting plate 15.

The operation of the sensor fixture 10 shown in FIGS. 1 to 4 having such a configuration will be described below.
The sensor holding tube 4 is inserted into and engaged with an arc-shaped curved portion formed by the semicircular arc portion 12 and the elastic engagement piece 13, and the temperature sensor main body 3 is inserted into the sensor holding tube 4. The temperature sensor main body 3 and the sensor holding tube 4 constitute a sensor 5, and the sensor 5 is urged and held by the semicircular portion 12 by the elastic force of the elastic engagement piece 13. In this way, the sensor mounting plate 11
The sensor 5 is attached.

When the sensor holding tube 4 is engaged with the semicircular arc portion 12 as described above, the sensor mounting plate 11
Sensor fixture 10 sandwiched between a pipe and a pipe mounting plate 15
When the U-shaped portion 2 of the pipe 1 is inserted into the space inside the pipe, the sensor mounting plate 11 and the pipe mounting plate 15 are pushed apart so as to be separated from each other. The elastic force acting toward In this way, the sensor mounting plate 11 and the pipe mounting plate 15 cooperate to clamp the U-shaped portion 2 so as to press the U-shaped portion 2 against the sensor holding cylinder 4.

When the pipe 1 is inserted between the sensor mounting plate 11 and the pipe mounting plate 15 and the sensor mounting 10 is mounted on the U-shaped portion 2 of the pipe 1, a U-shaped The outer surface 2a of the part 2 fits. Since the peripheral portion 19a of the hollow hole 18 is urged by the U-shaped portion 2 by the elastic force of the pipe mounting plate 15 acting on the U-shaped portion 2, the U-shaped portion is provided unless an external force exceeding the urging force is applied. The portion 2 does not fall out from the hollow hole 18 and the posture of the sensor fixture 10 with respect to the pipe 1 is maintained.

Further, the pipe 2 is placed in the sensor fixture 10.
Is inserted, the elastic locking piece 20 is temporarily pressed outward when the U-shaped portion 2 passes. When the outer surface 2a of the U-shaped portion 2 engages with the hollow 18, the elastic locking piece 20 returns to its original position by its own elastic force as shown in FIG. 2 is locked on the inner surface 2b. Thus, the sensor attachment 10 is more firmly attached to the pipe 1.

According to the sensor fixture 10 shown in FIGS. 1 to 4, when the sensor fixture 10 is attached to the U-shaped part 2 of the pipe 1, the outer surface 2a of the U-shaped part 2 is attached to the pipe. The peripheral edge 19a of the hollow hole 18 of the plate 15 is fitted into the peripheral edge 19a, and the peripheral edge 19a, in particular, both sides 1 on which the elastic force is strong.
9b and 19b press the U-shaped part 2 in the direction of the mounting plate 11 for the sensor, so that there is no danger that the U-shaped part 2 is displaced by the vibration of the air conditioner as in the prior art. The sensor attachment 10 can be securely attached. Thereby, the temperature sensor body 3
The temperature of the U-shaped portion 2 can be detected via the sensor holder 4.

Further, the peripheral portion 1 forming the hollow 18
9a is provided with an elastic locking piece 20, and the sensor attachment 1
When the “0” is attached to the U-shaped portion 2, the elastic locking piece 20 locks the inner surface 2 b of the U-shaped portion 2 with an elastic force. It can be more reliable. Furthermore, since the sensor mounting fixture 10 is merely provided with the hollowed hole 18, it is only necessary to additionally work the hollowed hole in the conventional product, and the sensor can be easily manufactured.

In the illustrated embodiment, an example is shown in which the present invention is applied to a pipe such as a heat exchanger of an air conditioner. However, it goes without saying that the present invention can be similarly applied to other pipes. Also,
Although the example in which the sensor 5 which is a temperature sensor is used as an object to be attached to a pipe has been described, the present invention can be applied to a sensor other than temperature measurement. Furthermore, although the example in which the temperature sensor main body 3 is inserted into the sensor holding cylinder 4 is shown, the present invention is also applied to a configuration in which the temperature sensor main body 3 is directly attached to the sensor mounting member 10 without using the sensor holding cylinder 4. can do.

[0024]

As described above, according to the present invention, when the sensor mounting member is mounted on the U-shaped portion of the pipe, the outer surface of the U-shaped portion is fitted into the hollow of the pipe mounting plate. Since both sides of the peripheral portion are configured so as to press the U-shaped portion in the direction of the sensor mounting plate, there is no danger that the U-shaped portion will be deviated from the U-shaped portion due to vibration of an air conditioner or the like. Thus, there is an effect that the sensor mounting member can be securely mounted.

Further, since the elastic locking piece of the hollowed hole locks the inner surface of the U-shaped portion with elastic force, it is possible to further securely attach the sensor mounting member to the U-shaped portion. This has the effect of further increasing the reliability of the installation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a sensor holding cylinder according to the present invention is attached to a U-shaped portion of a pipe.

FIG. 2 is a front view showing one embodiment of a sensor mounting tool according to the present invention.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a right side view of FIG. 2;

FIG. 5 is a side view showing a conventional sensor attachment.

FIG. 6 is an explanatory diagram of the left side surface of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pipe 2 ... U-shaped part 2a ... Outer surface 2b ... Inner surface 3 ... Sensor main body 4 ... Sensor holding cylinder 5 ... Sensor 10 ... Sensor mounting tool 11 ... Sensor mounting plate 12 ... Semi-circular part 15 ... Pipe Mounting plate 16: curved portion 18: hollow hole 19a: peripheral edge of hollow hole 19b: both sides of peripheral edge 20: elastic locking piece

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Koji Ooi 2270 Yokose, Yokoze-cho, Chichibu-gun, Saitama F-term (reference) in Electronic Device Development Center, Ceramics Factory, Mitsubishi Materials Corporation 3L061 BA02

Claims (2)

[Claims] A sensor mounting plate for mounting a sensor, and a pipe mounting plate extending from the sensor mounting plate and bent to face the sensor mounting plate, wherein the pipe is The curved U-shaped portion and the sensor are inserted into a space sandwiched between the sensor mounting plate and the pipe mounting plate, and are sandwiched between the sensor mounting plate and the pipe mounting plate. In the sensor mounting tool configured as described above, the pipe mounting plate has a hollowed hole so that an outer surface of the U-shaped portion is fitted to a portion located outside the curved U-shaped portion. A sensor fixture characterized by being formed. 2. The sensor mounting according to claim 1, wherein the hollow has a resilient locking piece at a part of a peripheral edge thereof for locking an inner surface of the U-shaped portion. Utensils.