JP5798271B1 - Dental mirror - Google Patents

Abstract

The present invention provides a dental mirror that can remove a cloudy surface of a mirror surface and does not deteriorate usability. A handle portion (10) held by a user's hand, a mirror portion (20) provided at a tip of the handle portion (10), and a mirror surface (21) of the mirror portion (20). The air blowing hole (22) provided and an air supply path (23) for supplying air to the air blowing hole (22) through the handle part (10) are provided. A pump unit (30) that is operated and supplies air to the air blowing hole (22) through the air supply path (23) is provided. [Selection] Figure 1

Description

  The present invention relates to a dental mirror used for viewing the oral cavity in dentistry and the like.

Conventionally, as seen in, for example, Patent Document 1, a handle portion (U) held by a user's hand, a mirror portion (A) provided at the tip of the handle portion (U), and the mirror portion (A ) Of the air blowing hole (D) provided toward the mirror surface (A ′) and an air supply path (C) for supplying air to the air blowing hole (D) through the handle portion (U). Dental mirrors are known.
According to this dental mirror, air is blown from the air blowing hole (D) toward the mirror surface (A ′), and the mirror surface (A ′) is removed from the cloud (such as cloudiness and droplets). (A ′) can be easily viewed.

  Conventionally, for example, as seen in Patent Document 2, a dental mirror (1) is provided at the tip of the three-way syringe (3), and the handle (2) of the dental mirror (1) is configured to be hollow. There is also known a dental mirror in which air or water from the way syringe (3) is supplied to the dental mirror (1) so that the clouding of the dental mirror (1) can be removed.

  Further, as seen in Patent Document 3, for example, a compressed air injection cylinder (1) with a mirror (2) is attached to the end of the tip (7) of the three-way syringe (8) or the end (11) of the air supply pipe of the air compressor. A dental mirror provided with a compressed air jet (3) at the mirror mirror side end of the compressed air jet cylinder (1) with a mirror (2) so that the compressed air is blown onto the surface of the mounted mirror (2) Is also known.

JP-A-7-136110 Japanese Utility Model Publication No. 62-18119 JP 2000-102551 A

None of the above-described conventional dental mirrors itself has an air supply means, and therefore, when used, it is necessary to connect a three-way syringe or an air feeding tube to the dental mirror.
For this reason, when the dental mirror is used, the three-way syringe pipe or the air feeding pipe for the dental mirror may become an obstacle, and the usability may be deteriorated.
The problem to be solved by the present invention is to provide a dental mirror that can remove clouding and the like on the mirror surface and that does not deteriorate usability.

In order to solve the above problems, the dental mirror of the present invention is
A handle portion held by the user's hand, a mirror portion provided at the tip of the handle portion, an air blowing hole provided toward the mirror surface of the mirror portion, and the air blowing hole through the handle portion A dental mirror having an air supply path for supplying air,
The handle portion is operated by the user's hand, and is provided with a pump portion that supplies air to the air blowing hole through the air supply path ,
The pump unit is operated by the user's hand and is made of a flexible material that defines a part of the pump chamber; and
A downstream check valve that is provided in an air flow path from the pump chamber to the air blowing hole and blocks an air flow from the air blowing hole toward the pump chamber;
An upstream check valve that is provided in a suction path for sucking air into the pump chamber and blocks an air flow from the pump chamber toward the suction path;
The pump unit is actuated when the operation unit made of the flexible material is pressed by the user's hand .
According to this dental mirror, when the mirror surface is clouded while using the dental mirror, the user can manually operate the pump unit provided on the handle unit, Air is supplied to the air blowing hole through the air supply path, and clouding of the mirror surface or the like can be removed by the blowing air.
And since the pump part operated by a user's hand is provided in the handle part and air is supplied to the air blowing hole through the air supply path by the pump part, according to the dental mirror of the present invention, Unlike technology, there is no need to connect a three-way syringe or air line to the dental mirror. Therefore, when the dental mirror is used, the above-described three-way syringe pipe or the air supply pipe does not interfere with usability.
As described above, according to the dental mirror of the present invention, it is possible to remove the cloudy surface of the mirror surface and to obtain an effect that the usability is not deteriorated.
further,
The pump unit is operated by the user's hand and is made of a flexible material that defines a part of the pump chamber; and
A downstream check valve that is provided in an air flow path from the pump chamber to the air blowing hole and blocks an air flow from the air blowing hole toward the pump chamber;
An upstream check valve that is provided in a suction path for sucking air into the pump chamber and blocks an air flow from the pump chamber toward the suction path;
Since the pump unit is operated when the operation unit made of the flexible material is pressed by the user's hand, the pump unit can be configured as a manual pump, and the air blowing hole and the air flow path from the mirror unit side The flow of liquid droplets and the like that may go to the pump chamber through the downstream check valve can be blocked by the downstream check valve.

In this dental mirror,
The handle portion is a cylindrical body, and the pump portion is a flexible material that bulges from the outer peripheral surface of the cylindrical body in a direction perpendicular to the axial direction of the cylindrical body to define a part of the pump chamber It can be set as the structure which has a control part which consists of this, and a pump part act | operates because this control part is pressed by the user's hand.
With this configuration, the pump unit can be configured as a manual pump, and the operation of the pump bulges from the outer peripheral surface of the cylindrical body in a direction orthogonal to the axial direction of the cylindrical body to define a part of the pump chamber. Since it can be obtained by pressing the operating portion made of a flexible material, the pump can be easily operated.

In this dental mirror ,
At least one of the check valves of the prior Symbol downstream check valve and the upstream-side check valve may be a configuration that is formed integrally with the operation section formed of the flexible material.
With this configuration, it is possible to assemble together with the operation unit for the check valve of the one even without low, thereby improving the assemblability.

In this dental mirror,
The pump unit is provided in said pump chamber, to restrict excessive displacement of the operating unit, and a regulating portion having a vent from the pump chamber allows a flow of air toward the air supply passage It can be set as the structure provided.
According to this structure, it is possible to ensure the flow of air toward the air supply passage from the pump chamber by the regulation unit, made of a flexible material which defines a portion of the pump chamber operating portion excessive displacement The pump function can be secured by regulating

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the dental mirror which concerns on this invention, (a) is a top view, (b) is a front view, (c) is cc sectional drawing in figure (a), (d) is a figure. Dd sectional drawing in (c). (A) (b) is an operation explanatory view. It is a figure which shows other embodiment, (a) is front sectional drawing, (b) is bb sectional drawing in Fig. (A), (c) is operation | movement explanatory drawing.

  Hereinafter, embodiments of a dental mirror according to the present invention will be described with reference to the drawings. In each figure, the same reference numerals are given to the same or corresponding parts.

A dental mirror 1 shown in FIG. 1 includes a handle portion 10 held by a user's hand (not shown), a mirror portion 20 provided at the tip of the handle portion 10, and a mirror surface 21 of the mirror portion 20. And an air supply path 23 for supplying air to the air blowing hole 22 through the handle portion 10.
The handle portion 10 is provided with a pump portion 30 that is operated by a user's hand and supplies air A to the air blowing hole 22 through the air supply passage 23.

  According to the dental mirror 1, when the mirror surface 21 is clouded while the dental mirror 1 is being used, the user manually operates the pump unit 30 provided on the handle unit 10. Thus, the air A is supplied from the pump unit 30 to the air blowing hole 22 through the air supply passage 23, and clouding or the like (attachment of clouding or droplets) on the mirror surface 21 can be removed by the blowing air A1. .

The pump unit 30 operated by the user's hand is provided in the handle unit 10, and the air A is supplied to the air blowing hole 22 through the air supply path 23 by the pump unit 30. Therefore, unlike the prior art, there is no need to connect a three-way syringe or an air supply tube to the dental mirror 1. Therefore, when the dental mirror is used, the above-described three-way syringe pipe or the air supply pipe does not interfere with usability.
As described above, according to the dental mirror 1 of this embodiment, it is possible to remove the cloudy surface of the mirror surface 21 and the effect that the usability is not deteriorated.

  The handle portion 10 is a cylindrical body, and the pump portion 30 swells from the outer peripheral surface 11 of the cylindrical body (10) in a direction orthogonal to the axial direction (the longitudinal direction of the cylindrical body) of the cylindrical body (10). It has the operation part 32 which consists of flexible materials (for example, silicon rubber) which defines a part of chamber 31, and the pump part 30 act | operates when this operation part 32 is pressed by a user's hand (FIG. 2).

  If comprised in this way, while being able to comprise the pump part 30 as a manual pump, the action | operation of a pump bulges from the outer peripheral surface 11 of a cylindrical body (10) to the direction orthogonal to the axial direction of this cylindrical body (10). Therefore, the pump can be easily operated because it can be obtained by pressing the operation portion 32 made of a flexible material that defines a part of the pump chamber 31.

The pump unit 30 includes the operation unit 32,
It is provided in the air flow path (23) extending from the pump chamber 31 to the air blowing hole 22 and reverses the downstream air flow A2 (see FIG. 2B) from the air blowing hole 22 toward the pump chamber 31. A stop valve 33;
An upstream check valve 34 is provided in the suction path 12 for sucking air A3 into the pump chamber 31 and blocks the air flow A4 (see FIG. 2A) from the pump chamber 31 toward the suction path 12. ing.

  If comprised in this way, while being able to comprise the pump part 30 as a manual pump which operate | moves favorably, the liquid which may go to the pump chamber 31 from the mirror part 20 side through the air blowing hole 22 and an air flow path (23) The flow of drops and the like can be blocked by the downstream check valve 33.

In this embodiment, the downstream check valve 33 and the upstream check valve 34 are both constituted by reed valves 33r and 34r, but may be constituted by other valves (for example, ball valves).
Reference numeral 33 h denotes a valve port that is opened and closed by the downstream check valve 33, and is provided in a partition wall 33 d that partitions the pump chamber 31 and the air supply path 23.
Reference numeral 34 h denotes a valve opening that is opened and closed by the upstream check valve 34, and is provided in a partition wall 34 d that partitions the pump chamber 31 and the suction path 12.

The operation of the dental mirror 1 will be described with reference to FIG.
This dental mirror 1 can be used in the same manner as a normal dental mirror (a dental mirror to which a three-way syringe or an air feeding tube is not connected).

When clouding or the like occurs on the mirror surface 21 while the dental mirror 1 is being used, as shown by the arrow P in FIG. Press.
Then, since the upstream check valve 34 remains closed, the pressure in the pump chamber 31 is increased, the downstream check valve 33 is opened, and air A is supplied to the air blowing hole 22 through the air supply path 23, and the blown air A1. As a result, the cloudy surface of the mirror surface 21 is removed.

Thereafter, when the user releases the pressure on the operation unit 32, the operation unit 32 returns to the original position as shown in FIG. 2B by its own restoring force based on the flexible material, and a pump generated in the process. Due to the negative pressure in the chamber 31, the new air A3 opens the upstream check valve 34 and is sucked into the pump chamber 31 from the suction passage 12. At this time, since the downstream check valve 33 is closed, even if droplets or the like are directed from the mirror unit 20 side to the pump chamber 31 through the air blowing hole 22 and the air flow path, the flow of the droplets or the like is on the downstream side. It is blocked by the check valve 33.
Note that an air inlet 13 is provided in the suction passage 12. In this embodiment, the air introduction port 13 is configured by an opening (13) provided at the rear end of the handle portion (tubular body) 10.

At least one of the downstream check valve 33 and the upstream check valve 34 is constituted by a reed valve, and can be formed integrally with the operation portion 32 made of a flexible material. .
With such a configuration, at least one of the downstream check valve 33 and the upstream check valve 34 is formed integrally with the operation portion 32 made of a flexible material. The check valve can be assembled together with the operation portion 32, and the assemblability is improved.

  In this embodiment, both the downstream check valve 33 and the upstream check valve 34 are constituted by a reed valve formed integrally with the operation portion 32 made of a flexible material. The stop valves 33 and 34 can be assembled together with the operation unit 32, and the assemblability is further improved.

The operation part 32 can be fixed to the handle part 10 by an appropriate means. For example, in this embodiment, as shown in FIG. 1, as shown in FIG. 1, the operation portion 32 has an engagement portion (coupling portion) with respect to the handle portion 10, and a linear linear protrusion on the lower edge. 32r, 32r are provided, a semi-arc-shaped linear protrusion 32f is provided at the front part, and a projecting piece 32p integral with the reed valve 34r is provided in the rear part in an arcuate shape. In this manner, it is detachably attached to the handle portion 10 by being engaged (coupled) with an engagement recess provided in the handle portion 10.
33s is a slit for inserting the reed valve 33r.

FIG. 3 shows another embodiment.
The dental mirror 1 shown in FIG. 3 is provided in the pump chamber 31 with an operation unit 32 made of a flexible material that defines a part of the pump chamber 31 when the pump unit 30 is operated by a user's hand. And a restricting portion 14 having a vent hole 14h that restricts excessive displacement of the operating portion 32 and permits the flow of air A from the pump chamber 31 toward the air supply path 23. Have

  If comprised in this way, while being able to comprise the pump part 30 as a manual pump, while being able to ensure the flow of the air A which goes to the air supply path 23 from the pump chamber 31 by the control part 14, some pump chambers 31 are comprised. The pump function can be ensured by restricting excessive displacement of the operation portion 32 made of the flexible material to be defined.

The restricting portion 14 is a cylindrical body that constitutes a part of the handle portion 10, and as shown in FIGS. 3A and 3B, a large number of vent holes 14h are provided in the longitudinal direction and over the entire circumference. It has been.
The operation portion 32 is configured by an inflating body having both ends 32b having a small diameter fixed to the handle portion 10 (in this case, the restriction portion 14) and a central portion 32c bulging 360 degrees around the axis to have a large diameter. Therefore, the user can press the operation unit 32 from any position 360 degrees around the axis.

For example, as indicated by an arrow P in FIG. 3C, when the user presses the operation unit 32 of the pump unit 30 with a hand (finger), the air between the operation unit 32 and the regulating unit 14 passes through the vent hole 14h. As shown by an arrow A, the air is supplied to the air blowing hole 22 through the air supply path 23, and the operation portion 32 abuts against the restriction portion 14, whereby excessive displacement of the operation portion 32 is restricted.
Although the illustrated vent hole 14h is a round hole, it may be a slit.

  The check valve 33 (34) of this embodiment includes a reed valve (valve element) 33r (34r) and a ring-shaped valve seat body 33b (34b) having a valve opening 33h (34h) in the center when viewed from the axial direction. Are fixed to each other by bonding or the like, and are coupled to the restricting portion 14 and the handle portion 10 by screw couplings 33s and 33s (34s and 34s).

  The operation part 32 can be fixed to the handle part 10 by an appropriate means. For example, in this embodiment, ring-shaped projections 32e are provided as engaging portions (coupling portions) with respect to the handle portion 10 before and after the operation portion 32, and these ring-shaped projections 32e It is attached to the handle portion 10 so as to be detachable by engaging (coupling) with an engaging recess provided in the handle portion 10 so as to fit the above.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope of the gist of the present invention.
The handle part 10, the mirror part 20, and the operation part 32 can each be comprised with an appropriate well-known material.
For example, the handle part 10, the restricting part 14, and the mirror part 20 can all be made of stainless steel, synthetic resin, or the like. The operation unit 32 and the reed valves 33r and 34r can be made of a rubber material other than silicon rubber or a synthetic resin.
The shape and dimensions of each part can also be set as appropriate. For example, in FIG. 1, the length L1 of the handle portion 10 is about 125 mm, the length L2 of the mirror portion 20 is about 40 mm, and the outer diameter D of the handle portion 10 is about 10 mm.
The mirror unit 20 shown in FIGS. 1 to 3 is configured to be detachable with respect to the handle unit 10 by the screw coupling 24, but may be configured integrally with the handle unit 10.

DESCRIPTION OF SYMBOLS 10: Handle part 11: Outer peripheral surface 12: Suction path 14: Restriction part 14h: Ventilation hole 20: Mirror part 21: Mirror surface 22: Air blowing hole 23: Air supply path 30: Pump part 31: Pump chamber 32: Operation part 33: Downstream check valve 34: Upstream check valve

Claims (4)

A handle portion (10) held by the user's hand, a mirror portion (20) provided at the tip of the handle portion (10), and a mirror surface (21) of the mirror portion (20). A dental mirror comprising an air blowing hole (22) and an air supply path (23) for supplying air to the air blowing hole (22) through the handle portion (10),
The handle portion (10) is provided with a pump portion (30) that is operated by the user's hand and supplies air to the air blowing hole (22) through the air supply path (23) .
The pump part (30) is operated by the user's hand, and an operation part (32) made of a flexible material defining a part of the pump chamber (31);
A downstream side that is provided in an air flow path (23) extending from the pump chamber (31) to the air blowing hole (22) and blocks airflow from the air blowing hole (22) toward the pump chamber (31). A check valve (33);
An upstream check valve (34) provided in a suction passage (12) for sucking air into the pump chamber (31) and blocking an air flow from the pump chamber (31) toward the suction passage (12); With
The dental mirror according to claim 1, wherein the pump unit (30) is activated when the operation unit (32) made of the flexible material is pressed by the user's hand . In claim 1,
The handle portion (10) is a cylindrical body, and the pump portion (30) bulges from the outer peripheral surface (11) of the cylindrical body in a direction perpendicular to the axial direction of the cylindrical body, and the pump chamber (31 ) Having an operation part (32) made of a flexible material that defines a part of the pump part (30), and the operation of the operation part (32) is pressed by the user's hand to activate the pump part (30). Dental mirror characterized by In claim 1 or 2 ,
At least one of the check valves of the prior Symbol downstream check valve (33) and the upstream check valve (34), that are formed integrally with the operation section formed of the flexible material (32) A featured dental mirror. In any one of Claims 1-3,
Said pump unit (30) is provided on the said pump chamber (31) within said air supply passage from regulate excessive displacement, and pump chamber (31) of the operating unit (32) (23) A dental mirror comprising a restricting portion (14 ) having a vent hole (14h) that allows a flow of air toward the head.

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