阅读说明：本技术 检测用工具及检测方法 (Detection tool and detection method ) 是由 则近孝彰 三上慎司 于 2021-05-13 设计创作，主要内容包括：本公开涉及检测用工具及检测方法。一种检测空气的温度的检测用工具(500),检测用工具(500)具备：检测部(550),检测从气动涡轮手机(1)产生的空气的温度；以及主体部(540),具有设置有检测部(550)且用于使气动涡轮手机(1)靠近该检测部(550)而配置的面。(The present disclosure relates to a detection tool and a detection method. A detection tool (500) for detecting the temperature of air, the detection tool (500) comprising: a detection unit (550) that detects the temperature of air generated from the air turbine handpiece (1); and a main body (540) having a surface provided with a detection unit (550) and configured to bring the air turbine handpiece (1) close to the detection unit (550).)

1. A detection tool for detecting the temperature of air, the detection tool comprising:

a detection unit that detects the temperature of air generated from the air turbine handpiece; and

and a main body portion having a surface on which the detection portion is provided and which is arranged so that the air turbine hand piece is close to the detection portion.

2. The tool for inspection according to claim 1,

the detection portion includes a temperature indicating material whose color changes according to a change in temperature.

3. The tool for inspection according to claim 2,

the temperature indicating material changes color when air above about 40 degrees is detected.

4. The tool for inspection according to claim 3,

the color of the temperature indicating material is not restored to the original color once changed.

5. The detection tool according to any one of claims 2 to 4,

the main body portion includes an area for explaining the color change of the temperature indicating material.

6. The tool for inspection according to claim 1,

the detection unit is configured in a shape as a marker for blowing gas generated from the air turbine handpiece onto the detection unit.

7. The tool for inspection according to claim 6,

the detection portion is configured to accommodate a size of a head portion of the air turbine handpiece.

8. The tool for inspection according to claim 1,

the main body includes a region for explaining a detection method for causing the detection unit to detect the temperature of the air generated from the air turbine hand piece,

the detection method comprises the following steps: and bringing the air turbine hand piece closer to the detection unit within a predetermined range in a state where the air turbine hand piece is driven for a predetermined time.

9. The tool for inspection according to claim 8,

the detection method includes a step of bringing the head of the air turbine hand piece into proximity with the detection portion within a predetermined range.

10. The tool for detection according to claim 8 or 9, wherein,

the predetermined time is at least 2 seconds or more.

11. The tool for inspection according to claim 8,

the predetermined range is a range in which the distance between the detection unit and the air turbine hand piece is 1mm to 10 mm.

12. A detection method for detecting the temperature of air,

the detection method comprises the following steps: and bringing the air turbine hand piece close to a predetermined range of a detection tool for detecting the temperature of air in a state where the air turbine hand piece is driven for a predetermined time.

13. The detection method according to claim 12,

the inspection method includes a step of bringing the head of the air turbine hand piece into proximity with the inspection tool within a predetermined range.

14. The detection method according to claim 12 or 13,

the predetermined time is at least 2 seconds or more.

15. The detection method according to claim 12,

the predetermined range is a range in which the distance between the detection tool and the air turbine hand piece is 1mm to 10 mm.

Technical Field

The present disclosure relates to a detection tool and a detection method.

Background

Conventionally, a technique for detecting an abnormality of a mobile phone (handset) is known. For example, the following techniques are disclosed in the specification of U.S. Pat. No. 6786897 and the specification of german patent application publication No. 102016202228: by using a temperature detection unit mounted on the mobile phone, it is diagnosed whether or not an abnormality has occurred in the mobile phone due to heat generation.

Disclosure of Invention

In the technique described in the above patent document, since the temperature detection member is integrated with the mobile phone, the temperature detection member is rapidly deteriorated as the mobile phone is used.

The present disclosure has been made to solve the above-described problems, and an object of the present disclosure is to provide a detection tool and a detection method that can diagnose whether or not a heat generation abnormality occurs in a mobile phone for a long period of time.

According to the present disclosure, a detection tool that detects a temperature of air is provided. The detection tool is provided with: a detection unit that detects the temperature of air generated from the air turbine handpiece; and a main body portion having a surface provided with a detection portion and disposed for bringing the air turbine hand piece close to the detection portion.

According to the present invention, there is provided a detection method of detecting a temperature of air. The detection method comprises the following steps: and bringing the air turbine hand piece close to a predetermined range of a detection tool for detecting the temperature of the air in a state where the air turbine hand piece is driven for a predetermined time.

The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention, which is to be read in connection with the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram showing an application example of the detection tool according to the present embodiment.

Fig. 2 is a side view of the air turbine hand piece according to the present embodiment.

Fig. 3 is a longitudinal sectional view of a main part of the air turbine hand piece according to the present embodiment.

Fig. 4 is a partial sectional view of a main part of the air turbine hand piece according to the present embodiment.

Fig. 5 is a cross-sectional view of a main part of the air turbine hand piece according to the present embodiment.

Fig. 6 is a schematic view showing one surface of the detection tool according to the present embodiment.

Fig. 7 is a schematic view showing the other surface of the detection tool according to the present embodiment.

Fig. 8 is a schematic diagram for explaining an example of use of the detection tool according to the present embodiment.

Fig. 9 is a schematic view showing a detection tool according to another embodiment.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and description thereof will not be repeated.

[ application example ]

An application example of the detection tool 500 according to the present embodiment will be described with reference to fig. 1. Fig. 1 is a schematic diagram showing an application example of the detection tool 500 according to the present embodiment.

The detection tool 500 according to the embodiment of the present embodiment is a card-type temperature detection tool for detecting the temperature of air generated from the air turbine handpiece 1. When a user such as a dentist grasps the handle 2 of the air turbine handpiece 1 and brings the head 4 close to the detection unit 550 of the detection tool 500, the color of the temperature indicating material 555 contained in the detection unit 550 may be changed according to the temperature of the air leaking from the head 4 of the air turbine handpiece 1.

The temperature indicating material 555 applied to the detection unit 550 of the detection tool 500 is configured to: when air at a predetermined temperature or higher is detected, the color changes. When the temperature of the air generated by the air turbine handpiece 1 approaching the detection tool 500 by the user is equal to or higher than a predetermined temperature, the temperature indicating material 555 applied to the detection unit 550 reacts with the temperature of the air, and the color of the temperature indicating material 555 changes.

In this way, the user can diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality by using the detection tool 500. Further, since the detection tool 500 is separate from the air turbine handpiece 1, it is possible to diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality for a long period of time without deteriorating with the use of the air turbine handpiece 1.

[ construction of pneumatic turbo-handpiece ]

The structure of the air turbine hand piece 1 according to the present embodiment will be described with reference to fig. 2 to 5. The air turbine handpiece 1 according to the present embodiment is a dental handpiece, and rotates the cutting tool 5 attached to the head 4 by a driving force generated by air. The structure of the air turbine handpiece 1 will be specifically described below.

Fig. 2 is a side view of the air turbine handpiece 1 according to the present embodiment. Fig. 3 is a longitudinal sectional view of a main part of the air turbine hand piece 1 according to the present embodiment. Fig. 4 is a partial sectional view of a main part of the air turbine hand piece 1 according to the present embodiment. Fig. 5 is a cross-sectional view of a main part of the air turbine hand piece 1 according to the present embodiment. Fig. 5 is a cross-sectional view of the air turbine hand piece 1 taken along line IV-IV in fig. 3.

The air turbine handpiece 1 includes a grip 2 that a user such as a dentist grips when performing a treatment. The handle 2 has a base end portion provided with a connection portion 2a for connecting to a supply pipe 3 for supplying air. The head 4 is connected to the distal end of the handle 2 via a neck 2 b. The cutting tool 5 is detachably attached to the head 4.

The head portion 4 is integrally provided with a shaft portion 40 and a cylindrical housing portion 41, the shaft portion 40 is connected to the distal end portion of the handle 2, the cylindrical housing portion 41 houses the cutting tool 5 and a driving portion 6 for driving the cutting tool 5, and a rotation axis 41a of the cylindrical housing portion 41 is oriented perpendicular or substantially perpendicular to an axial center 40a of the shaft portion 40. The rotation shaft 41a corresponds to a central axis of rotation of the cutting tool 5.

The shaft portion 40 of the head portion 4 has a reduced cross-sectional portion 40b, and the reduced cross-sectional portion 40b is sized and shaped to be inserted into the distal end portion of the cylindrical handle 2. The shaft portion 40 is formed with a plurality of through holes that fluidly connect the rear end surface 40c on the handle 2 side and the inner wall surface of the cylindrical case portion 41. The plurality of through holes include air supply paths 71-73 for supplying pressurized air to the driving unit 6 and air discharge paths 81, 82 for discharging pressurized air from the driving unit 6.

The air supply paths 71-73 are connected to an air supply pipe 7, and the air supply pipe 7 is disposed inside the handle 2 along the longitudinal axial direction of the handle 2 from a connecting portion 2a with the supply pipe 3. The air supply path 71 communicates with the connection portion 70 of the air supply pipe 7 formed by drilling the shaft portion 40. The air supply passages 72 and 73 communicate with the connection portion 70 via connection passages 72a and 73a formed by drilling the shaft portion 40. Thus, the pressurized air supplied from the air supply pipe 7 is introduced into the cylindrical case 41 through the air supply paths 71 to 73.

The base end portions of the air supply passages 72, 73 are open on the outer peripheral surface of the reduced cross-section portion 40b, and spherical seal members (for example, steel balls) 72b, 73b are press-fitted and closed in the middle of the open sides of the air supply passages 72, 73. The connection path 73a is formed to intersect the air supply path 72 and communicate with the air supply path 72, and also communicate with the air supply path 73.

Each of the air supply paths 71 to 73 has small-diameter nozzle sections 710, 720, 730 on the front side. The front end portions of the nozzle portions 710, 720, 730 are opened to the inner wall surface of the cylindrical case 41 to form air supply ports 711, 721, 731. The nozzle sections 710, 720, 730 are configured to: the cutting tool 5 disposed inside the cylindrical housing 41 receives a rotational force in the direction of the arrow 42 (clockwise in fig. 5) about the rotation shaft 41a by the pressurized air ejected from the nozzle portions 710, 720, 730.

As shown in fig. 3, the exhaust paths 81 and 82 are holes formed below the air supply paths 71 to 73 and penetrating from the rear end surface 40c to the inner wall surface of the cylindrical case 41. The distal end portions of the exhaust paths 81 and 82 are opened to the inner wall surface of the cylindrical case 41 to serve as exhaust ports. The proximal end portions of the exhaust paths 81 and 82 are open at the rear end surface 40c, and communicate with an unillustrated exhaust unit via the connection portion 2a and the supply pipe 3 shown in fig. 2, with the inner cylindrical portion of the handle 2 serving as an exhaust passage. Further comprising: the auxiliary exhaust port 83 communicating with the exhaust paths 81 and 82 is opened in an elongated hole shape, and a part of the air introduced into the first air passage 154 is directly discharged from the exhaust paths 81 and 82 without going toward the second air passage 170 and the third air passage 164.

Further, a light guide 9 for illuminating the distal end portion of the cutting tool 5 is disposed on the shaft portion 40. The shaft 40 is provided with a core air line 10 for injecting water into the tip of the cutting tool 5. The water supply line and the air supply line communicating with the core air line 10 are not shown.

As shown in fig. 3 and 4, the cylindrical housing portion 41 of the head portion 4 has a cylindrical hollow portion 410 having a shape and a size corresponding to the outer shape of the driving portion 6, and the driving portion 6 converts the pressurized air ejected from the air supply paths 71 to 73 into the rotational force of the cutting tool 5. The hollow portion 410 is opened at the upper and lower opening portions 411, 412 thereof.

In order to hold the driving unit 6 disposed in the hollow portion 410 at a predetermined position of the hollow portion 410, an annular sub-housing 413 is detachably provided in the opening 411 in the upper portion. A male screw is formed on an outer peripheral portion of the sub-housing 413, and is screwed into a female screw formed on an inner peripheral portion of the opening 411, and the screwed state is locked by a screw 414 attached to the head 4.

Further, a cap receiving ring 415 is provided on the upper surface of the sub-housing 413, and the cap 11 is detachably attached to the opening 411 by the cap receiving ring 415. The cap support ring 415 locks the peripheral edge portion of the cap 11 so as to prevent the cap 11 from being separated upward even if the cap 11 is allowed to move upward and downward along the rotation shaft 41 a.

As shown in fig. 3, a spring member 111 is elastically attached between the inner side of the cap 11 and the driving portion 6. The cap 11 is stably held at the illustrated position by the urging force of the spring member 111. In the elastically mounted state, the spring member 111 acts on the pressing ring 112 provided astride the outer ring 122 of the upper bearing portion 12 and the cap support ring 415, and functions to hold the driving portion 6 at a predetermined position. By pressing the cap 11 against the elastic force of the spring member 111, the gripping of the cutting tool 5 by the tool support portion 50 can be released and the cutting tool 5 can be replaced.

As shown in fig. 3, the driving portion 6 of the cutting tool 5 has a tool supporting portion 50 that supports the cutting tool 5 along the rotation axis 41a of the hollow portion 410. The tool support portion 50 is formed with a hole (tool support hole) 51 having a predetermined depth from one end (lower end in fig. 3 and 4). The tool support portion 50 includes a chuck mechanism that holds the cutting tool 5 inserted into the tool support hole 51.

The tool support portion 50 is supported by the upper bearing portion 12 and the lower bearing portion 13 provided in the upper portion and the lower portion, respectively, so as to be rotatable about the rotation shaft 41 a. The upper bearing portion 12 includes an inner ring 121, an outer ring 122 disposed concentrically with the inner ring 121, and a plurality of balls 123 disposed between the inner ring 121 and the outer ring 122. The inner ring 121 is externally fitted and fixed to the tool support portion 50. The outer ring 122 is fixed to the sub-housing 413 in a press-fitted state via an O-ring 124. A peripheral groove 413a for accommodating the O-ring 124 is formed in the inner peripheral portion of the sub-housing 413. The O-ring 124 prevents the pressurized air discharged to the rotor 14 from leaking upward.

The lower bearing portion 13 is constituted by a ball bearing similarly to the upper bearing portion 12, and the lower bearing portion 13 includes an inner ring 131, an outer ring 132, and a plurality of balls 133 arranged therebetween similarly to the upper bearing portion 12. The inner ring 131 is fixed to the tool support portion 50. The outer ring 132 is fixed to the hollow portion 410 of the cylindrical case 41 in a press-fitted state via an O-ring 134. The O-ring 134 prevents the pressurized air from leaking downward.

The hollow portion 410 of the cylindrical housing portion 41 is formed into a shape having a size corresponding to the arrangement positions of the upper bearing portion 12, the lower bearing portion 13, and the rotor 14, and is substantially composed of an upper large-diameter cylindrical portion 416 having a large inner diameter, a lower small-diameter cylindrical portion 417 having a small inner diameter, and a stepped portion 418 formed between the upper large-diameter cylindrical portion 416 and the lower small-diameter cylindrical portion 417. The O-ring 134 provided in the lower bearing portion 13 is accommodated in a circumferential groove 417a, and the circumferential groove 417a is formed on the inner circumference of the lower small-diameter cylinder portion 417.

A two-stage rotor 14 is integrally provided at a portion of the tool support portion 50 located between the upper bearing portion 12 and the lower bearing portion 13, and the rotor 14 rotates the tool support portion 50, and further the cutting tool 5, about the rotary shaft 41a via the tool support portion 50 by pressurized air ejected from the air supply paths 71 to 73.

The height position of the first air passage 154 (height position along the rotation shaft 41 a) is set to the following position: in a state where the rotor 14 is disposed in the hollow portion 410, the pressurized air ejected from the nozzles 710, 720, and 730 is blown into the upper portion of the first air passage 154. The shape of each first air passage 154 from the lower surface of the upper ceiling wall to the outer peripheral portion of the large-diameter ring portion 142 is formed as a curved surface 155 curved inward in the radial direction, and the air blown into the first air passage 154 from the outer side in the radial direction of the rotor 14 is smoothly turned downward along the curved surface 155 with minimum air resistance. The side surface of each first turbine blade 151 viewed from the direction toward the rotary shaft 41a is concave from the upstream side to the downstream side in the rotation direction 42 of the rotor.

As shown in fig. 3, the air introduction portion 17 for introducing the air from the first turbine vane portion 15 into the second turbine vane portion 16 is provided on the inner periphery of the hollow portion 410 of the head portion 4, specifically, on the step portion 418.

The pressurized air ejected from the air supply paths 71 to 73 into the hollow portion 410 is introduced into the first air passage 154 from the radially outer side toward the radially inner side, and the pressurized air discharged from the lower end portion of the first air passage 154 is introduced into the third air passage 164 from the radially outer side toward the radially inner side. The introduction portion 17 is constituted by a plurality of (seven in the present embodiment) second air passages 170 for introducing air from the lower end portion of the first air passage 154 into the third air passage 164. The plurality of second air passages 170 are arranged in a circumferential direction around the rotation shaft 41 a.

When teeth are cut using the air turbine handpiece 1 configured as described above, as shown in fig. 2, a cutting tool 5 suitable for a target work is selected and attached to the tool support portion 50 from below. Then, pressurized air supplied from a pressurized air supply source, not shown, is sent to the air supply paths 71 to 73 through the supply pipe 3. Pressurized air is supplied to the nozzles 710, 720, 730 from the air supply paths 71-73. The pressurized air passing through the nozzle portions 710, 720, 730 is accelerated and ejected from the air supply ports 711, 721, 731 in a direction perpendicular to the rotation axis 41a of the rotor 14 (toward the downstream side with respect to the rotation direction 42 of the rotor 14). Then, by blowing pressurized air into the first air passage 154, the energy of the pressurized air acts on the acting surface 152 of the first turbine blade 151 in the first turbine blade section 15, and the rotor 14 is rotated in the arrow 42 direction about the axial center of the rotating shaft 41 a. As the rotor rotates, pressurized air is sequentially blown into the first air passage 154 passing through the facing portions of the air supply ports 711, 721, and 731, and the rotor 14 is continuously rotated. Since the side surface of the first turbine blade 151 is concave in the rotational direction 42, the energy of the pressurized air blown into the first air passage 154 acts on the acting surface 152, and is effectively consumed as the rotational power of the rotor 14. Thereby, the rotor 14 rotates with a high rotation speed and a large rotation torque.

In this way, in the air turbine handpiece 1, the rotor 14 provided inside the head 4 can be rotated by blowing air, and the cutting tool 5 can be rotated by rotating the rotor 14. Here, if an abnormality occurs in which members that are not normally in contact come into contact with each other when the rotor 14 rotates, the surface of the head 4 may overheat due to frictional heat caused by the contact, and the surface temperature of the head 4 may reach about 40 degrees or more. In order to prevent such an abnormality, the user needs to diagnose whether the heat generation abnormality occurs in the air turbine handpiece 1.

Conventionally, a temperature detection means for detecting the temperature of a mobile phone is mounted on the mobile phone. However, in the conventional detection method, since the temperature detection member is integrated with the mobile phone, the temperature detection member is rapidly deteriorated as the mobile phone is used. For example, although a dental handpiece is sterilized by a high-pressure steam sterilizer at 135 degrees every time it is used, there is almost no temperature detection member that can withstand heat at 135 degrees for a long period of time. Therefore, a method for diagnosing whether the heat generation abnormality occurs in the mobile phone for a long time is required. Therefore, the present embodiment provides a detection tool 500 and a detection method that can diagnose whether or not a heat generation abnormality has occurred in a mobile phone for a long period of time. The detection tool 500 and the detection method according to the present embodiment will be specifically described below.

[ constitution of detection tool ]

The structure of the detection tool 500 according to the present embodiment will be described with reference to fig. 6 and 7.

Fig. 6 is a schematic view showing one surface of the detection tool according to the present embodiment. As shown in fig. 6, the detection tool 500 is a card-type temperature detection tool including a main body 540. A surface (e.g., surface) 500a on one side (e.g., surface side) of the main body 540 includes a region 510, a region 520, and a region 530.

The area 510 is provided with a detection unit 550 that detects the temperature of the air generated from the air turbine handpiece 1.

The detection unit 550 is configured in a shape as a marker for blowing air generated from the air turbine handpiece 1 onto the detection unit 550. As shown in fig. 5, the cross section of the head 4 of the air turbine handpiece 1 according to the present embodiment is formed in a circular shape. Therefore, the detection unit 550 is configured to have a size that can accommodate the head 4 of the air turbine handpiece 1 and to have a circular shape similar to the head 4.

The sensing part 550 includes a temperature indicating material 555 whose color changes according to a change in temperature. The temperature indicating material 555 is composed of: when heated to a temperature higher than a predetermined temperature, the color changes and, if the color changes, the original color cannot be restored.

The temperature at which the temperature indicating material 555 according to the present embodiment changes color is set to: the temperature at which heat generation due to an abnormality of the air turbine handpiece 1 can be appropriately detected and erroneous detection due to the influence of the indoor temperature is not caused. For example, the temperature indicating material 555 according to the present embodiment is configured to have: when heated above about 40 degrees, change color. When the air generated from the air turbine handpiece 1 is blown, the temperature indicating material 555 maintains a predetermined color (e.g., yellow) when the temperature of the air is lower than a predetermined temperature (e.g., about 40 degrees), and changes from the predetermined color (e.g., yellow) to a specific color (e.g., red) when the temperature of the air is equal to or higher than the predetermined temperature (e.g., about 40 degrees).

In general, the room temperature in a dental hospital is 28 degrees of an ideal temperature, but may exceed 30 degrees in summer and the like. In such an environment, if the temperature at which the temperature indicating material 555 changes color is set to about 35 degrees, the temperature indicating material 555 may change color due to the influence of the indoor temperature. On the other hand, it has been empirically found that if the air turbine blade 1 generates heat due to an abnormality, the air turbine blade 1 rises to about 40 degrees or more. Therefore, if the temperature indicating material 555 that changes color when heated to about 40 degrees or more is applied to the detection unit 550, the detection tool 500 does not erroneously detect the heat generation abnormality of the air turbine hand piece 1, and can more accurately detect the heat generation abnormality of the air turbine hand piece 1. The temperature indicating material 555 preferably changes color when heated to 40 degrees or more, but may change color when a temperature in the range of 40 degrees ± 1 degree or ± 2 degrees is detected.

The temperature indicating material 555 may be a detection member of a sticker type attached to a position corresponding to the detection portion 550 in the area 520, or may be a detection member of a paint type applied to a position corresponding to the detection portion 550 in the area 520.

The region 520 is a region for explaining the content of the color change of the temperature indicating material 555. For example, the following is described in the area 520: when air leaking from the head 4 of the air turbine hand piece 1 is blown, if the color of the temperature indicating material 555 maintains a predetermined color (for example, yellow), the air turbine hand piece 1 is permitted to be used, and if the color of the temperature indicating material 555 changes from the predetermined color (for example, yellow) to a specific color (for example, red), the air turbine hand piece 1 is prohibited from being used.

In the area 530, a notice is described to the effect that the use of the air turbine handpiece 1 is prohibited when the temperature indicating material 555 changes color.

Fig. 7 is a schematic view showing the other surface of the detection tool 500 according to the present embodiment. As shown in fig. 7, the other side (e.g., backside) surface 500b (e.g., backside) of the body 540 includes a region 560.

The area 560 is an area for explaining a detection method for causing the detection unit 550 to detect the temperature of the air generated by the air turbine handpiece 1. For example, the following steps are described in the area 560: before the temperature of the air is detected by the detection tool 500, the head 4 of the air turbine handpiece 1 is brought close to a predetermined range of the detection unit 550 in a state where the air turbine handpiece 1 is driven for a predetermined time. The predetermined time is at least 2 seconds or more, preferably 8 to 12 seconds (for example, 10 seconds). The predetermined range is a range in which the distance between the detection unit 550 and the air turbine handpiece 1 is 1mm to 10mm, and preferably 1mm to 2 mm.

In addition, although the region 560 shown in fig. 7 describes that the air turbine hand piece 1 is driven for 10 seconds, the region may describe that the air turbine hand piece 1 is driven for at least 2 seconds or more, or that the air turbine hand piece 1 is driven for 8 to 12 seconds. In addition, although the region 560 shown in fig. 7 describes a range in which the distance between the detection unit 550 and the air turbine handpiece 1 is 1mm to 2mm, the distance between the detection unit 550 and the air turbine handpiece 1 may also describe a range in which the distance is 1mm to 10 mm.

[ detection method ]

A method of detecting the temperature of the air generated from the air turbine handpiece 1 using the detection tool 500 according to the present embodiment will be described with reference to fig. 8. Fig. 8 is a schematic diagram for explaining an example of use of the detection tool 500 according to the present embodiment.

As shown in fig. 8, first, the user holds the air turbine handpiece 1 with one hand and holds the card-type detection tool 500 with the other hand. Then, the user brings the head 4 of the air turbine hand 1 close to within a predetermined range of the detection unit 550 of the air turbine hand 1 in a state where the air turbine hand 1 is driven for at least 2 seconds or more, preferably 8 seconds to 12 seconds (for example, 10 seconds). Specifically, the user brings the head 4 of the air turbine handpiece 1 closer to the detector 550 and the air turbine handpiece 1 by a distance in a range of 1mm to 10mm, preferably in a range of 1mm to 2 mm.

Here, the time required for the drive of the air turbine handpiece 1 to become stable is 8 seconds to 12 seconds. Thus, when detecting the temperature of the air generated from the air turbine handpiece 1, the user can use the detection tool 500 to detect the temperature of the air in a state where the driving of the air turbine handpiece 1 is stabilized.

The range in which the distance between the detection unit 550 and the air turbine handpiece 1 is 1mm to 2mm is a range in which the temperature indicating material 555 included in the detection unit 550 can stably detect the temperature of the air generated from the air turbine handpiece 1. Thus, the user can cause the detection unit 550 to more accurately detect the temperature of the air generated from the air turbine handpiece 1.

As shown in fig. 8 (a) and (B), when the temperature of the air generated from the air turbine handpiece 1 is lower than a predetermined temperature (for example, about 40 degrees), the color of the temperature indicating material 555 maintains a predetermined color (for example, yellow). In this case, since no heat generation abnormality occurs in the air turbine hand piece 1, the air turbine hand piece 1 is allowed to be used.

On the other hand, as shown in (a) and (C) of fig. 8, when the temperature of the air generated from the air turbine handpiece 1 is equal to or higher than a predetermined temperature (for example, about 40 degrees), the color of the temperature indicating material 555 changes from a predetermined color (for example, yellow) to a specific color (for example, red). In this case, since a heat generation abnormality occurs in the air turbine hand piece 1, the use of the air turbine hand piece 1 is prohibited.

The diagnosis of the abnormal heat generation of the air turbine handpiece 1 using the detection tool 500 is performed before the patient is treated with the air turbine handpiece 1. Thus, a user such as a dentist can diagnose the heat generation abnormality of the air turbine handpiece 1 before treating a patient.

[ Main disclosure ]

As described above, the present embodiment includes the following disclosure.

The detection tool 500 includes a detection unit 550 and a main body 540, the detection unit 550 detects the temperature of the air generated from the air turbine handpiece 1, and the main body 540 has a surface on which the detection unit 550 is provided and which is disposed so that the air turbine handpiece 1 is close to the detection unit 550.

Thus, the user can diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality by bringing the air turbine handpiece 1 close to the detection unit 550 of the detection tool 500. Further, since the detection tool 500 is separate from the air turbine handpiece 1, it is possible to diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality for a long period of time without deteriorating with the use of the air turbine handpiece 1.

The sensing part 550 includes a temperature indicating material 555 whose color changes according to a change in temperature. In this embodiment, the temperature indicating material 555 changes from yellow to red according to a change in temperature.

Thus, the user can diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality by using the characteristics of the temperature indicating material 555.

The temperature indicating material 555 changes in color when air at a predetermined temperature or higher is detected. In the present embodiment, the temperature indicating material 555 changes in color when detecting a temperature at which abnormal heat generation of the air turbine handpiece 1 can be appropriately detected and when detecting air at a temperature that is not erroneously detected due to the influence of the indoor temperature, that is, when detecting air at a temperature of about 40 degrees (for example, a temperature within a range of 40 degrees ± 1 degree or ± 2 degrees).

Thus, the user can more accurately diagnose whether the heat generation abnormality occurs in the air turbine hand piece 1, and the air turbine hand piece 1 is not influenced by the indoor temperature as much as possible and is not erroneously detected as the heat generation abnormality.

The temperature indicating material 555 is composed of: once the color changes according to the temperature change, the color can not be restored to the original color.

Thus, it is possible to avoid the user from overlooking the abnormal heat generation due to the color of the temperature indicating material 555 being temporarily changed and then returning to the original color, and it is possible to appropriately diagnose whether the abnormal heat generation has occurred in the air-powered turbo phone 1.

As shown in fig. 6, the main body 540 includes a region 520 for explaining the color change of the temperature indicating material 555.

Thus, the user can diagnose whether or not the heat generation abnormality has occurred in the air turbine handpiece 1 by appropriately using the detection tool 500 by checking the contents described in the region 520 included in the main body 540.

The detection unit 550 is configured in a shape as a marker for blowing air generated from the air turbine handpiece 1 onto the detection unit 550.

Accordingly, the user can blow the air generated from the air turbine handpiece 1 to the detection unit 550 more appropriately, and can appropriately diagnose whether or not the heat generation abnormality occurs in the air turbine handpiece 1.

The detection unit 550 is sized to accommodate the head 4 of the air turbine handpiece 1.

Thus, the user can appropriately bring the head 4 of the air turbine handpiece 1 close to the detection unit 550, and can appropriately diagnose whether or not the heat generation abnormality has occurred in the air turbine handpiece 1.

The main body 540 includes a region 560 for explaining a detection method for causing the detection unit 550 to detect the temperature of the air generated from the air turbine hand piece 1, and the detection method includes a step of bringing the air turbine hand piece 1 close to within a predetermined range of the detection unit 550 in a state where the air turbine hand piece 1 is driven for a predetermined time.

Thus, the user can diagnose whether or not the heat generation abnormality has occurred in the air turbine hand piece 1 by a more appropriate method.

The detection method includes the step of bringing the head 4 of the air turbine handpiece 1 into proximity with the detection unit 550 within a predetermined range.

Thus, the user can more accurately detect the temperature of the air generated from the air turbine handpiece 1 by the detection unit 550, and can more accurately diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality.

The predetermined time for driving the air turbine handpiece 1 when the air turbine handpiece 1 is brought close to the detection unit 550 of the detection tool 500 is at least 2 seconds or more, and preferably 8 to 12 seconds (for example, 10 seconds).

Thus, the user can cause the detection tool 500 to detect the temperature of the air in a state where the driving of the air turbine handpiece 1 is stabilized.

The predetermined range is a range in which the distance between the detection unit 550 and the air turbine handpiece 1 is 1mm to 10mm, and preferably 1mm to 2 mm.

Thus, the user can cause the detection unit 550 to more accurately detect the temperature of the air generated from the air turbine handpiece 1.

[ modified examples ]

The present invention is not limited to the above-described embodiments, and various modifications and applications can be made. A modified example applicable to the present invention will be described below.

(detection tool relating to other modes)

The detection tool 500 according to the present embodiment detects the temperature of the air generated from the air turbine handpiece 1 by using the color change of the temperature indicating material 555, but is not limited to this embodiment.

Fig. 9 is a schematic diagram showing a detection tool 600 according to another embodiment. The detection tool 600 shown in fig. 9 is a card-type detection tool for electrically measuring temperature. Specifically, a detection unit 650 for detecting the temperature of air generated from the air turbine handpiece 1 and a display unit 610 for displaying the temperature of air detected by the detection unit 650 are provided on a surface (for example, the front surface) of the main body 640 of the detection tool 600.

The detection unit 650 is a temperature sensor for electrically measuring temperature, such as a thermocouple or a temperature measuring resistor element, incorporated therein. When the user brings the head 4 of the air turbine handpiece 1 close to the detection unit 650, the detection unit 650 electrically measures the temperature of the air leaking from the head 4. The measured temperature of the air is displayed on the display portion 610.

In this way, the detection tool 600 includes the detection unit 650 and the body 640, the detection unit 650 detects the temperature of the air generated from the air turbine handpiece 1, and the body 640 has a surface on which the detection unit 650 is provided and which is disposed so that the air turbine handpiece 1 is close to the detection unit 650.

Thus, the user can diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality by bringing the air turbine handpiece 1 close to the detection unit 650 of the detection tool 600. Further, since the detection tool 600 is separate from the air turbine handpiece 1, it is possible to diagnose whether or not the air turbine handpiece 1 has a heat generation abnormality for a long period of time without deteriorating with the use of the air turbine handpiece 1.

The detection tool is not limited to the detection tool 500 and the detection tool 600, and other temperature measurement means such as a thermometer and a temperature sensor may be used to measure the temperature of the air generated from the air turbine handpiece 1. The detection tool may be a contact type that measures the temperature of the air generated from the air turbine hand piece 1 by contacting the air turbine hand piece 1, or a non-contact type that measures the temperature of the air generated from the air turbine hand piece 1 without contacting the air turbine hand piece 1.

(for temperature indicating material)

The temperature indicating material 555 according to the present embodiment is an irreversible temperature indicating material that is heated to a predetermined temperature or higher to change the color and does not return to the original color. For example, the temperature indicating material may be a reversible type temperature indicating material that is heated to a predetermined temperature or higher to change the color, and then returns to the original color when cooled again to a temperature lower than the predetermined temperature. In this way, unlike the disposable detection tool 500 using the reversible type temperature indicating material, the user can use the disposable detection tool a plurality of times.

The temperature indicating material 555 according to the present embodiment changes in color when heated to a predetermined temperature or higher, but is not limited to a color, and may change in pattern or shape.

(shape of the detecting part)

The detection unit 550 according to the present embodiment is configured to be circular in accordance with the cross section of the head 4 of the air turbine handpiece 1, but may be configured to have another shape such as a square shape as long as it has a size capable of accommodating the head 4 of the air turbine handpiece 1.

(for pneumatic turbine handpiece)

The detection tool 500 according to the present embodiment detects the temperature of the air generated from the air turbine handpiece 1 having the configuration shown in fig. 2 to 5, but the detection tool 500 may detect the temperature of the air generated from an air turbine handpiece having another configuration. That is, the detection tool 500 may be used for any air turbine handpiece as long as it is an air turbine handpiece that generates air.

While the embodiments of the present invention have been described, the embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the claims, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein.