KR20220055157A - Sterilizing apparatus for dental tools - Google Patents

Abstract

The present invention provides a dental handpiece cleaning device, which includes: an adapter housing for elastically supporting an end of a gripping part of a handpiece; an accommodating member which has a cleaning groove for accommodating an end of the treatment tool side of the handpiece; and a movable holder which elastically supports the accommodating member to be slidable along a longitudinal direction of the handpiece. The present invention provides the dental handpiece cleaning device which can be used conveniently and is applicable to handpieces of various sizes.

Description

Dental handpiece cleaning device {STERILIZING APPARATUS FOR DENTAL TOOLS}

The present invention relates to a handpiece cleaning apparatus, and more particularly, to a dental handpiece cleaning apparatus that can be used conveniently and can be applied to handpieces of various sizes.

In general, in dentistry, dental medical devices, which collectively refer to handpieces used in dental treatment processes such as tooth preparation or polishing, or instruments for performing oral cleaning, vacuum suction, implant surgery, tooth decay and plug removal, are used.

If the dental medical devices are exposed to foreign substances or contaminants during use, the dental medical devices must be disinfected and sterilized before use for other patients.

In particular, the handpiece is an instrument used for the purpose of removing teeth during dental treatment.

In the case of the handpiece, the structure of the bean from the inside is complex and dense, as well as abrasion dust from parts due to the harsh use environment of 400,000 RPM, and at the same time, foreign substances such as blood and saliva in the patient's mouth flow into the inside of the handpiece This phenomenon (suckback phenomenon) may occur.

Therefore, daily periodic cleaning, disinfection, and lubrication of the handpiece are required for prevention and maintenance of cross-infection between patients, so a handpiece cleaning apparatus capable of conveniently performing this is required.

Accordingly, the present invention has been devised to solve the above problems, and it is an object of the present invention to provide a dental handpiece cleaning apparatus that is easily usable and applicable to handpieces of various sizes.

An apparatus for cleaning a dental handpiece according to an embodiment of the present invention includes an adapter housing for elastically supporting an end of the handpiece on the side of the gripping part, a receiving member having a cleaning groove for receiving the end of the handpiece on the side of the treatment tool, and the The receiving member may include a movable holder that elastically supports so as to be slidable in the longitudinal direction of the handpiece.

An adapter cover formed to close the adapter opening of the adapter housing, a first movable groove formed in a longitudinal direction inside the adapter housing, a pressing member slidably disposed along the first movable groove, and the adapter cover and a first elastic member having one end supported by the urging member and the other end supported by a support groove formed on the adapter cover side of the pressing member.

The pressing member may include a pressing member formed on the pressing member and having an opening/closing protrusion convexly protruding toward the opposite side of the adapter opening and an opening/closing hole closed or opened by contact of the opening/closing protrusion.

The compression member may include a friction surface having an inner diameter smaller than a minimum outer diameter of the outer peripheral surface of the handpiece in the longitudinal direction of the handpiece.

The friction surface may have an inner diameter that is gradually reduced along a direction in which the handpiece is introduced.

A plurality of movable protrusions projecting radially outward from the center of the compression member and formed on the inner circumferential surface of the adapter housing to correspond to the movable projections, the movable projections being compressed or expanded radially inward or outward of the compression member, It may include a second movable groove formed to guide the moving distance.

A cleaning liquid outlet is formed on the outer peripheral surface of the adapter housing, and the cleaning liquid sucked from the cleaning groove flows through the inside of the handpiece, and then out through the cleaning liquid outlet along the first and second movable grooves. can be emitted.

A housing opening having one side open is provided, a first housing formed to surround three sides along a side surface of the receiving member, a first guide rail formed on one side surface of the first housing in a longitudinal direction, and the first A second housing having a first guide protrusion formed on the inner circumferential surface to be coupled to the guide rail, a second guide rail formed along the longitudinal direction on one side surface of the second housing, and formed on the inner circumferential surface to be coupled to the second guide rail It may include a third housing having a second guide protrusion.

The accommodating member is seated on a movable holder slid along the inner wall surface of the first housing, and an outer rim protruding outwardly from the housing opening side rim of the accommodating member is formed, and the housing opening side of the first housing Formed at the end, the outer rim is locked by the first stepped portion formed to be stepped toward the inner space, so that the movement distance may be limited.

Doedoe formed in the first housing, the second stepped portion having an inner diameter wider than the first stepped portion is formed, so that the rim of the housing opening side of the movable holder is caught and fixed, the moving distance of the movable holder may be limited.

The opening/closing protrusion may further include a spacer that is formed to protrude in an area smaller than an area of the opening/closing protrusion and protrudes from the opening/closing protrusion toward the compression member.

A second elastic member disposed inside the third housing and elastically supporting a bottom surface of the movable holder may be included.

and a first support frame in which the adapter housing is fixed to be inclined at a predetermined angle and a second support frame in which the third housing is fixed to be inclined at an angle different from the inclination angle of the adapter housing.

The movable holder may be formed such that one side of the hand piece along a vertical direction is opened so that the receiving member is slid to one side along the vertical direction to be detachable from the movable holder.

The dental handpiece cleaning apparatus according to an embodiment of the present invention can be used conveniently and can be applied to handpieces of various diameters or lengths.

In addition, since the receiving member and the movable holder are formed to be detachably mounted, maintenance is easy.

1 is a perspective view showing a state in which a dental handpiece washing apparatus according to an embodiment of the present invention is installed in a first frame and a second frame.
FIG. 2 shows a state in which the first frame and the second frame of FIG. 1 are removed.
FIG. 3 is a view showing the inside of the adapter housing and the third housing of FIG. 2 being removed, respectively.
FIG. 4 is a longitudinal cross-sectional view of FIG. 2 .
5 is a perspective view illustrating a pressing member applied to a dental handpiece washing apparatus according to an embodiment of the present invention.
6 is a perspective view showing a receiving member applied to the dental handpiece washing apparatus according to an embodiment of the present invention.
7 is a perspective view showing a movable holder applied to a dental handpiece washing apparatus according to an embodiment of the present invention.
8 is a view illustrating a state in which the first housing, the second housing, and the third housing of FIG. 2 slide to each other.
9 is a view showing a state in which the receiving member of the dental handpiece washing apparatus according to an embodiment of the present invention is slid and separated from the movable holder.
10 is a view showing a state in which the outer peripheral surface of the gripper side of the handpiece is drawn into the pressing member of the dental handpiece washing apparatus according to an embodiment of the present invention.
11 shows a state in which the treatment tool side end of the handpiece is seated in the cleaning groove of the receiving member on the pressing member of the dental handpiece cleaning apparatus according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. Spatially relative terms should be understood as terms including different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a state in which a dental handpiece washing apparatus according to an embodiment of the present invention is installed on a first frame and a second frame, FIG. 2 is a state in which the first frame and the second frame of FIG. 1 are removed 3 is a view showing the inside by removing each of the adapter housing and the third housing of FIG. 2 , and FIG. 4 is a longitudinal sectional view of FIG. 2 .

1 to 4 , the dental handpiece cleaning apparatus according to an embodiment of the present invention may include an adapter housing 100 , a receiving member 200 , and a movable holder 203 .

Here, the dental handpiece cleaning apparatus according to an embodiment of the present invention may be obliquely fixed to the first frame 1 and the second frame 2 . Here, FIG. 8 shows a state in which the dental handpiece washing apparatus according to an embodiment of the present invention is used. For the description of the handpiece T, referring to FIG. 8 in advance, the handpiece T is generally As a dental handpiece, which is one of dental medical devices used, it may refer to a handpiece driven by a motor driven by rotation of a motor or an air driven by compressed air. In addition, the handpiece (T) is generally formed such that the treatment tool side end (E) is bent so that the operator can easily grip the first frame (1) and the first frame (1) and The second frame 2 may be provided to form a predetermined angle. The angle formed by the first frame 1 and the second frame 2 may be designed at various angles to correspond to the inclined shape of the handpiece.

When maintenance of the adapter housing 100 is required, the adapter cover 100a may be detachably coupled to expose the inside. In FIG. 3 for convenience of explanation, the adapter cover 100a and the adapter housing 100 are removed. indicates the state of being In addition, a separate coupling member 100b may be formed in the adapter cover 100a to be coupled to the first frame 1 .

A first movable groove 101 may be formed inside the adapter housing 100 in the longitudinal direction. The first movable groove 101 may be provided as a space in which a pressing member 110 to be described later can slide along the longitudinal direction.

5 is a perspective view illustrating a pressing member applied to a dental handpiece washing apparatus according to an embodiment of the present invention.

As shown in FIG. 5 , the pressing member 110 may include a support groove 112 in which one end of the first elastic member 112a, which will be described later, is supported. The support groove 112 may be provided with a surface having a predetermined area on which one end of the first elastic member 112a can be supported. The first elastic member 112a may be, for example, a coil spring, and the support groove 112 is formed in various shapes such as a concave groove or a vertical surface to support one end of the first elastic member 112a. can be

In other words, one end of the first elastic member 112a is supported by the support groove 112 , and the other end of the first elastic member 112a is supported by the adapter cover 100a so that the pressing member 110 is elastically supported. to allow sliding along the longitudinal direction.

The pressing member 110 may include an opening/closing protrusion 113 . The opening/closing protrusion 113 is formed on the pressing member 110 and may convexly protrude toward the opposite side of the adapter cover 100a. As shown, the opening/closing protrusion 113 may be formed in a convex dome shape on the bottom surface of the pressing member 110, but may also be formed in a polygonal shape having an area capable of sealing the opening/closing hole 111, which will be described later. may be, so it is not limited thereto.

The opening/closing protrusion 113 may include a spacer 114 that is formed to protrude in an area smaller than the area of the opening/closing protrusion 113 and protrudes from the opening/closing protrusion 113 toward the compression member 120 . Although the spacer 114 is in close contact with the first elastic member 112a in the direction of compressing the first elastic member 112a while the gripper side end G of the handpiece T is in contact, a cleaning solution or It performs the function of allowing the internal pressure to communicate.

The opening/closing hole 111 selectively opens or closes an opening of one side of the compression member 120 by contact with the opening/closing protrusion 113 .

In addition, the compression member 120 may include a friction surface 121 having a predetermined length along the longitudinal direction of the handpiece T, and having an inner diameter smaller than the minimum outer diameter of the outer circumferential surface of the handpiece T. Here, when the gripper side end of the handpiece T penetrates through the inner space surrounded by the friction surface 121 and presses the opening/closing protrusion 113 in a compressing direction, the opening/closing hole 111 may be opened. .

In other words, in the state in which the handpiece T is drawn in in close contact with the friction surface 121, the outer circumferential surface of the handpiece T presses the opening and closing protrusion 113 in a state in close contact with the friction surface 121, For this reason, since the opening/closing projection 113 moves in a direction spaced apart from the opening/closing hole 111 while the opening/closing protrusion 113 compresses the first elastic member 112a, the opening/closing hole 111 may be opened.

Conversely, when the handpiece T is drawn out in a direction in which the opening/closing protrusion 113 is closely fixed to the opening/closing hole 111 by the elastic restoring force of the first elastic member 112a.

The inner diameter formed by the friction surface 121 of the pressing member 120 is the friction surface 121 of the pressing member 120 so that the contact force with the outer peripheral surface of the handpiece T is more secured and stable support is possible. ) may be formed to be gradually reduced along the incoming direction. That is, the compression member 120 may be formed of a rubber material, preferably silicone rubber. The silicone rubber is preferably a material having excellent elasticity.

In addition, as the material of the compression member 120 , any material having elasticity and liquid impermeability may be used according to selection of nitrile butadiene rubber (NBR) or the like, so it is not limited thereto.

In addition, since the friction surface 121 of the compression member 120 is elastically deformed in a state of being in close contact with the outer peripheral surface of the incoming hand piece T, it allows penetration of the hand piece T made of various diameters and at the same time the adhesion is improved. it becomes possible

When the compression member 120 is expanded by the handpiece T, a plurality of radially protruding radially outward from the center of the compression member 120 in order to secure a space in which the compression member 120 can be expanded. A movable protrusion 122 may be formed.

To this end, it is formed on the inner circumferential surface of the adapter housing 100 to correspond to the movable protrusion 122 , and the movable protrusion 122 is compressed or expanded radially inward or outwardly of the compression member 120 to guide the moving distance. A second movable groove 102 may be formed. In this embodiment, although it is shown that the movable protrusion 122 is formed in three places, in order to stably guide the compression or expansion of the compression member 120, the movable protrusion 122 may be formed in three or more places. not limited

6 is a perspective view showing a receiving member applied to the dental handpiece cleaning apparatus according to an embodiment of the present invention, Figure 7 is a movable holder applied to the dental handpiece cleaning apparatus according to an embodiment of the present invention A perspective view is shown.

6 and 7 together, the movable holder 203 has a seating groove 301 in which the accommodating member 200 can be seated and at the same time has a function of slidably supporting the outer peripheral surface of the accommodating member 200 . can be performed.

The receiving member 200 may include a cleaning groove 201 in which the end E of the treatment tool side of the handpiece T can be seated. The cleaning groove 201 may contain a cleaning liquid L, and the cleaning liquid L is sucked through the end E of the treatment tool side of the handpiece T while circulating inside the handpiece T for cleaning. will do

In addition, a holding portion 202a protruding from the outer protrusion of the receiving member may be formed. The grip portion 202a may refer to a portion protruding in an arcuate shape so that the user can grip the grip portion 202a by hand to facilitate separation from the movable holder 203, as will be described later. The shape of the gripping portion 202a is not limited thereto since it may be formed in any shape that the user can grip by hand.

The movable holder 203 includes a seating groove 204 so that the bottom of the accommodating member 200 can be seated. can be

In other words, the movable holder 203 is formed so that one side or both sides along the vertical direction with respect to the longitudinal direction of the handpiece T is opened, so that the receiving member 200 is slid to one side along the vertical direction to the movable holder ( 203) may be formed to be detachable. At this time, it is preferable that the upper end of the accommodating member 200 is bent toward the inner space so that movement in the height direction from the movable holder 203 is restricted.

8 is a view illustrating a state in which the first housing, the second housing, and the third housing of FIG. 2 slide to each other.

Referring to FIG. 8 , the accommodating member 200 side is opened, and the first housing 210 is formed to surround three surfaces along the side surface of the accommodating member 200 , and a length on one side surface of the first housing 210 . A first guide rail 210a formed along the direction, a second housing 220 having a first guide protrusion (not shown) formed on an inner circumferential surface to be coupled to the first guide rail 210a, the second housing 220 A third housing 230 having a second guide rail 220a formed along the longitudinal direction on one side of the second guide rail 220a and a second guide protrusion 231 formed on the inner circumferential surface to be coupled to the second guide rail 220a. can With respect to the second guide protrusion 231 described here, referring back to FIG. 3 , the second guide protrusion 231 formed on the inner wall surface of the third housing 230 is on the inner wall surface of the third housing 230 . Although it is a formed component, for convenience of explanation, the second guide protrusion 231 is shown separated from the third housing 230 with the third housing 230 removed. Similarly, the first guide protrusion may be integrally formed on the inner wall surface of the second housing 220 , and may be formed to be coupled to the first guide rail 210a.

The accommodating member 200 is seated on the movable holder 203 that slides along the inner side of the first housing 210, and an outer rim 202 protruding outward from the rim of the accommodating member 200 is formed, 1 The outer rim 202 is caught and fixed by the first stepped portion 211 formed at the end of the housing opening side of the housing 210 and stepped toward the inner space, so that the movement distance may be limited.

Here, the first housing 210 is formed with a second stepped portion 212 having an inner diameter larger than that of the first stepped portion 211 , so that the rim of the movable holder 203 is caught and fixed to move the movable holder 203 . Distance may be limited. For this reason, when the movable holder 203 is elastically supported by a second elastic member 210a to be described later and moves upward in the drawing, the first housing 210 is raised by the lifting force of the movable holder 203 .

In addition, while the first housing 210 is raised or lowered, the second housing 220 is raised or lowered by the first guide protrusion coupled to the first guide rail 210a, and the second housing 220 . The third housing 230 is raised or lowered by the second guide protrusion 231 coupled to the second guide rail 220a of the first housing 210 , the second housing 220 and the third housing 230 . ) will be expanded or reduced in three steps. Although not shown, a stepped portion or a stopper is formed on each of the first guide rail 210a and the second guide rail 220a, so that the first housing 210, the second housing 220, and the third housing 230 are formed. The range of motion can be adjusted.

A second elastic member 210a for elastically supporting the bottom surface of the movable holder 203 may be disposed inside the third housing 230 . The second elastic member 210a elastically presses the movable holder 203 in a direction spaced apart from the floor. For this reason, in the case of the handpiece T having a relatively short length, it is located in the washing groove 201 of the receiving member 200 in a state of tension to the maximum separation distance by the elastic support force of the second elastic member 210a. However, in the case of the handpiece T made of a relatively long length, a force is applied in the direction in which the elastic member 300a is compressed, so that the receiving member 200 and the movable holder 203 are pressed toward the bottom. It becomes possible to clean the inside of the handpiece T in a state in which the piece T is stably drawn into the bottom side of the inner housing 102 .

9 is a view showing a state in which the receiving member of the dental handpiece washing apparatus according to an embodiment of the present invention is slid and separated from the movable holder.

As shown in FIG. 9 , when replacement of the accommodating member 200 is required, the accommodating member 200 is restricted from movement in the longitudinal direction by the first stepped portion 211 , so the length of the first housing 210 . It is separated by sliding in a direction perpendicular to the direction.

10 is a view showing a state in which the outer peripheral surface of the grip part of the handpiece is drawn into the pressing member of the dental handpiece washing apparatus according to an embodiment of the present invention, and FIG. 11 is a dental hand according to an embodiment of the present invention. It shows a state in which the end of the treatment tool side of the handpiece is seated in the cleaning groove of the receiving member on the pressing member of the piece cleaning device.

10 and 11 together, the movable protrusion (G) of the pressing member 120 in the process of passing while the gripper side end G of the handpiece T passes while in contact with the friction surface 121 of the pressing member 120 122 spreads along the second movable groove 102 while expanding outward in the radial direction. By the expansion action of the movable protrusion 122, it is possible to mount handpieces of various diameters.

And, in the process of pushing the first elastic member 112a in a compressed direction in a state in which the gripper side end G of the handpiece T is in contact with the spacer 114 of the pressing member 110, the pressing member 110 ) of the opening and closing projection 113 is spaced apart from the opening and closing hole 111, the opening and closing hole 111 is opened.

Thereafter, as shown in FIG. 11 , when suction pressure is generated from the inside of the handpiece T in a state in which the washing liquid L is accommodated in the washing groove 201 of the receiving member 200, the washing groove of the receiving member 200 ( While the washing liquid L accommodated in 201 is sucked and flows through the inside of the handpiece T, washing of the handpiece T is performed and discharged to the outside through the cleaning liquid outlet 140 .

However, when the handpiece T having a long specification is mounted, the second elastic member 210a is compressed while in contact with the inner bottom of the washing groove 201, and the receiving member The movable holder 203 supporting the 200 compresses the second elastic member 210a and moves to a depth corresponding to the length of the handpiece T.

Due to this, it is possible to flexibly use the handpiece (T) in response to various lengths.

In this way, a predetermined space is provided in the cleaning groove 201 of the receiving member 200 so that the treatment tool side end E of the handpiece T is placed in the cleaning solution.

Although the internal structure of the handpiece T is not shown in this embodiment, in general, since a suction pipe is disposed inside the handpiece T, the washing liquid L is sucked through the suction pipe inside the handpiece T. After washing the inner wall of the plurality of tube members disposed in the first movable groove 101 and the second movable groove 102, the cleaning solution discharge port 140 to be discharged to the outside.

Therefore, the dental handpiece cleaning apparatus according to an embodiment of the present invention can be used conveniently and can be applied to handpieces of various diameters or lengths.

In addition, since the receiving member and the movable holder are formed to be detachably mounted, maintenance is facilitated.

As described above, the louver opening and closing device according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings described above, and within the scope of the claims, it is common in the technical field to which the present invention pertains. Various implementations are possible by those with the knowledge of

100: adapter housing
111: opening and closing hole
200: receiving member
201: washing groove
300: movable holder

Claims (14)

an adapter housing for elastically supporting the grip part side end of the handpiece;
a receiving member having a cleaning groove for receiving an end of the treatment tool side of the handpiece; and
A dental handpiece cleaning apparatus comprising a movable holder elastically supporting the receiving member so as to be slidable in a longitudinal direction of the handpiece. According to claim 1,
an adapter cover formed to close the adapter opening of the adapter housing;
a first movable groove formed along the longitudinal direction in the adapter housing;
a pressing member disposed to be slidable along the first movable groove; and
A dental handpiece cleaning apparatus comprising a first elastic member having one end supported by the adapter cover and the other end supported by a support groove formed on the adapter cover side of the pressing member. 3. The method of claim 2,
an opening and closing protrusion formed on the pressing member and convexly protruding toward the opposite side of the adapter opening; and
A dental handpiece cleaning device comprising a pressing member having an opening and closing hole that is closed or opened by contact of the opening and closing protrusion. 4. The method of claim 3,
The compression member includes a friction surface having an inner diameter smaller than a minimum outer diameter of an outer circumferential surface of the handpiece in a longitudinal direction of the handpiece. 5. The method of claim 4,
The friction surface has an inner diameter that is gradually reduced along a direction in which the handpiece is introduced, a dental handpiece cleaning device. 6. The method of claim 5,
a plurality of movable protrusions radially protruding radially outward from the center of the pressing member; and
Dental hand comprising a second movable groove formed on the inner peripheral surface of the adapter housing to correspond to the movable projection, the movable projection is compressed or expanded radially inward or outwardly of the compression member to guide a moving distance piece washing machine. 7. The method of claim 6,
A cleaning liquid outlet is formed on the outer peripheral surface of the adapter housing, and the cleaning liquid sucked from the cleaning groove flows through the inside of the handpiece, and then flows out through the cleaning liquid outlet along the first and second movable grooves. Exhaust, dental handpiece cleaning device. According to claim 1,
a first housing having a housing opening having one side opened and formed to surround three sides along a side surface of the receiving member;
a first guide rail formed along a longitudinal direction on one side surface of the first housing;
a second housing having a first guide protrusion formed on an inner circumferential surface to be coupled to the first guide rail;
a second guide rail formed along a longitudinal direction on one side surface of the second housing; and
and a third housing having a second guide protrusion formed on an inner circumferential surface to be coupled to the second guide rail. 9. The method of claim 8,
The receiving member is seated on a movable holder sliding along the inner wall surface of the first housing,
An outer rim protruding outwardly from the housing opening side rim of the accommodating member is formed, the outer rim is formed at the housing opening side end of the first housing, and the outer rim is formed by a first stepped portion stepped toward the inner space. A dental handpiece cleaning device with a limited movement distance due to a locking mechanism. 10. The method of claim 9,
Doedoe formed in the first housing, a second stepped portion having an inner diameter wider than the first stepped portion is formed so that the rim of the housing opening side of the movable holder is caught and fixed to limit the movement distance of the movable holder, for dental use Handpiece cleaning device. 11. The method of claim 10,
The dental handpiece washing apparatus further comprising a spacer protruding from the opening and closing protrusion to an area smaller than an area of the opening and closing protrusion, and protruding from the opening and closing protrusion toward the pressing member. 12. The method of claim 11,
Disposed inside the third housing, and comprising a second elastic member for elastically supporting the bottom surface of the movable holder, dental handpiece cleaning apparatus. 9. The method of claim 8,
a first support frame provided so that the adapter housing is fixed to be inclined at a predetermined angle; and
and a second support frame in which the third housing is inclinedly fixed at an angle different from the inclination angle of the adapter housing. 10. The method of claim 9,
The movable holder is formed so that one side along the vertical direction to the longitudinal direction of the hand piece is opened so that the receiving member is slid to one side along the vertical direction to be detachable from the movable holder, dental handpiece washing device.

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