KR101874787B1 - Spindle with extended guide area - Google Patents

Spindle with extended guide area Download PDF

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Publication number
KR101874787B1
KR101874787B1 KR1020170053645A KR20170053645A KR101874787B1 KR 101874787 B1 KR101874787 B1 KR 101874787B1 KR 1020170053645 A KR1020170053645 A KR 1020170053645A KR 20170053645 A KR20170053645 A KR 20170053645A KR 101874787 B1 KR101874787 B1 KR 101874787B1
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KR
South Korea
Prior art keywords
holder
shaft
burr
bur
ring
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Application number
KR1020170053645A
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Korean (ko)
Inventor
김양수
Original Assignee
두나미스덴탈 주식회사
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Priority to KR1020170053645A priority Critical patent/KR101874787B1/en
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Publication of KR101874787B1 publication Critical patent/KR101874787B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
    • A61C1/06—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with electric drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
    • A61C1/142—Operating tool blocking means
    • A61C1/144—Operating tool blocking means constricting the operating tool, e.g. chuck
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/18—Flexible shafts; Clutches or the like; Bearings or lubricating arrangements; Drives or transmissions
    • A61C1/185—Drives or transmissions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Disclosed is a spindle in which a guide area for guiding a burr is expanded so as to reduce vibration generated in a burr, thereby enabling precise machining for cutting and polishing teeth. The spindle in which the guide region is extended includes a shaft having one side and the other side opened; A burr holder which is inserted into the inner space of the shaft and has one side and the other side opened; And a spring seat which is pushed to the other side of the shaft and is partially fitted to the other side of the buckle holder, wherein the buckle holder has, at a point where a part of the spring seat fitted into the buckle holder from the one side is retracted A guide area for guiding the burrs is formed. By this, the vibration of the bur buried in the burr holder in which the guide area is expanded can be reduced, so that the operator can easily perform precision machining for cutting and polishing the tooth.

Description

Spindle with extended guide area < RTI ID = 0.0 >

[0001] The present invention relates to a spindle in which a guide region is extended, and more specifically, a guide region for guiding burrs is extended to reduce vibrations generated in burrs, thereby enabling precision machining for cutting and polishing teeth The guide region is extended.

Typical dental handpieces must be small enough for precision machining and small enough to allow delicate work.

To this end, the handpiece may be configured as a spindle for performing a work while rotating and a drive means for transmitting a driving force to the spindle for rotating the spindle.

More specifically, the present invention relates to a motor including a rod-shaped case for gripping by an operator, which is inserted into the case to generate a rotational force, a driving unit for generating a driving force, A chuck housing extending from the rotary shaft, a spindle portion coupled to a leading end of the chuck housing and cooperating with the rotation of the chuck housing, the spindle portion being formed of a collet chuck, a rotating shaft of the spindle portion, A bearing portion formed of a front bearing and a rear bearing fitted to surround the outer periphery of the driving shaft of the driving portion, and a front bearing and a rear bearing of the bearing portion, respectively, And a bearing fixed cover, The front bearing and the rear bearing of the bearing portion, which are engaged with the driving shaft and the rotating shaft by the engagement jaws, respectively, and which are respectively received in the inside of both sides of the bearing fixing cover, And a technique of forming a fixing jaw in each of the two sides so as to be respectively fixed to both sides is disclosed in Korean Patent Publication No. 10-1337308, a low vibration spindle structure of a handpiece.

However, the above-described technique has a problem in that vibration, noise, and heat are generated when the handpiece rotates due to the tolerances of the respective components.

In addition, when vibrations are generated while the burr coupled to the handpiece is rotated based on the driving force, an error in the eccentric direction is generated in the bur, which makes it difficult to precisely process the teeth for cutting and polishing.

Therefore, it is necessary to research and develop a spindle capable of reducing the vibration generated at the time of rotation of the handpiece, preventing errors in the eccentric direction of burrs, and enabling precision machining for cutting and polishing teeth.

Korean Patent Publication No. 10-1337308: Low vibration spindle structure of handpiece

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and to provide a method of manufacturing a toothbrush which is capable of reducing vibrations generated in a burr through expansion of a guide region formed in a burher, In which the possible guide region is extended.

Another object of the present invention is to provide a spindle in which a guide region is extended to absorb vibration transmitted to each component from a burr to minimize the deformation of each component due to vibration.

According to an aspect of the present invention, there is provided a spindle in which a guide region is extended, comprising: a shaft having one side and the other side opened; A burr holder which is inserted into the inner space of the shaft and has one side and the other side opened; And a spring seat which is pushed to the other side of the shaft and is partially fitted to the other side of the buckle holder, wherein the buckle holder has, at a point where a part of the spring seat fitted into the buckle holder from the one side is retracted A guide area for guiding the burrs is formed.

The shaft may include an inclined member that protrudes in a direction perpendicular to the direction in which the bur is drawn into the guide area and abuts against the bur holder to fix the bur holder.

The spindle in which the guide region of the present embodiment is extended is provided in a lead-in space formed on the other side of the shaft, and is made of a material having elasticity, and a spring seat fitted to the other side of the bur holder and the bur holder And a spring to be released in one direction or the other direction.

The shaft has a first step formed to extend from one side of the inclined member and to prevent the burr holder from colliding with the shaft due to an elastic force applied from the spring in one direction, And a second end protruding from one side of the inlet space in a direction perpendicular to a direction in which the burr is drawn into the guide area so that the spring is engaged so that the spring is provided in the inlet space .

Further, the burr holder may be formed on the inner circumference of the other side, and when the spring seat is fitted, a third step for preventing the fit-engaged spring seat from being disengaged from the other side from the other side by the spring; . ≪ / RTI >

The spring seat is fitted to the inlet space and is in close contact with the other side of the burr holder to close the other side of the shaft and abuts against the other side of the spring provided in the inlet space. A fixing member passing through the plate in a direction parallel to the direction in which the bur is drawn into the guide area and being fitted to the plate when the plate is in close contact with the other side of the burr holder; And when the plate is in close contact with the other side of the burr holder, the plate is pulled to the other side of the burr holder and elastically supported from the plate, And a plurality of stoppers spaced apart from each other and fastened to the third step when the plate is inserted into the plate.

In addition, the spindle in which the guide region of the present embodiment is extended is provided at one side of the guide region, one side and the other side are opened, and the burr drawn in the guide region is wrapped around the spindle, And a first o-ring that absorbs vibration generated in the burr drawn into the guide area.

Further, the spindle in which the guide region of the present embodiment is extended further includes a pin which is fitted to the bur holder and guides the burr drawn in the guide region to be spaced in one direction or the other direction, And a second O-ring which is provided in a space between the holders and which is opened at one side and the other and absorbs vibration transmitted from the burr drawn in the guide region to the shaft and the pin by being wrapped around the pin have.

The outer ring may have a circular or square cross-sectional shape such that the second O-ring is provided in a space between the shaft and the bur holder, and the outer ring has a circular or square cross-sectional shape so as to surround the pin , An inlet hole having the shape of the pin may be formed in the inner ring so that the inner ring surrounds the pin.

The spindle in which the guide region of the present embodiment is extended is provided in a space between the shaft and the bur holder, and one side and the other side are opened. By covering the bur holder, clearance between the shaft and the bur holder, And a third O-ring for absorbing vibration generated in the shaft and the bur holder by the second O-ring.

By this, the vibration of the bur buried in the burr holder in which the guide area is expanded can be reduced, so that the operator can easily perform precision machining for cutting and polishing the tooth.

And each O-ring absorbs the vibration transmitted from the burr to each component, thereby minimizing the deformation of each component due to vibration.

Further, the buckle holder and the spring seat are fastened to each other through the step of the shaft to prevent the buckle holder and the spring seat from colliding with each other due to the elastic force of the spring applied in one direction, thereby preventing the shaft from being deformed .

1 is a cross-sectional view illustrating components of a spindle in which a guide region is extended according to an embodiment of the present invention;
FIG. 2 is a sectional view showing one side of a spindle in which a guide region is extended according to an embodiment of the present invention, FIG.
FIG. 3 is a cross-sectional view showing the other side of a spindle in which a guide region is extended according to an embodiment of the present invention,
4 is a view for explaining a manner in which a spring seat according to an embodiment of the present invention is fitted to the other side of a burher holder;
5 is a cross-sectional view illustrating a spindle in which a guide region having a first O-ring is extended according to an embodiment of the present invention;
FIG. 6 is a sectional view for explaining a spindle in which a guide region in a state where a second O-ring is applied according to an embodiment of the present invention is extended,
7 is a cross-sectional view of a second O-ring according to an embodiment of the present invention and FIG.
8 is a cross-sectional view illustrating a spindle in which a guide region having a third O-ring is extended according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided as examples for allowing a person skilled in the art to sufficiently convey the ideas of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms.

1 is a cross-sectional view illustrating components of a spindle in which a guide region is extended according to an embodiment of the present invention.

Before describing FIG. 1, a spindle (hereinafter referred to as a "spindle") having an extended guide region according to an embodiment of the present invention, And the generated vibration is reduced, thereby enabling precision machining for cutting and polishing of teeth.

The spindle of the present embodiment is a spindle that absorbs vibration transmitted from the burr 10 to each component and minimizes the deformation of each component due to vibration.

To this end, the spindle of this embodiment comprises a shaft 100, a bur holder 200, a spring seat 300, a pin 400 and a spring 500.

The shaft 100 is provided with one side and the other side opened to allow the burr holder 200 to be inserted into the internal space.

Here, the shaft 100 may be formed of at least one material such as plastic, stainless steel, or a metal material.

On the other hand, the shaft 100 can be fixed to the inner space of the burr holder 200.

To this end, a portion of the inner circumference of the shaft 100, which abuts against the outer circumference of the burher 200 that is introduced into the inner space, may be protruded for fixing the burher 200.

The burr holder 200 is provided with one side and the other side opened, and a guide region for guiding the burr 10 is formed in the inner space.

Specifically, the burr holder 200 is formed as a unitary single piece, and extends from one side of the shaft to the other side. The burr holder 200 has a guide portion for guiding the burr 10 into and out, As shown in FIG.

In addition, the burher holder 200 can be fixed to the inner space of the shaft 100, as described above.

To this end, the burher holder 200 may have a shape in which a part of the outer edge abutting a part of the projected inner periphery of the shaft 100 is fastened to a part of the projected inner periphery of the shaft 100.

The burr holder 200 may be formed of the same material as the shaft 100.

A part of the spring sheet 300 is fitted to the other side of the bur holder 200 in order to prevent the burr 10 introduced into the inner space of the bur holder 200 from being deviated in the other direction.

In addition, the spring seat 300 may be fitted to the other side of the shaft 100 in order to reinforce the fitting force on the other side of the burher holder 200.

The guide area referred to in this embodiment may extend from one side of the bur holder 200 to a point where a part of the spring seat 300 fitted into the other side of the bur holder 200 is drawn.

To this end, a draw-in space 107 may be formed on the other side of the shaft 100.

That is, the spring seat 300 is fitted to the shaft 100 and the bucket holder 200 at the other side, thereby preventing the shaft 100 and the bucket holder 200 from being separated from the other side.

A detailed description of the structure of the spring seat 300 fitted to the other side of the shaft 100 and the other side of the bur holder 200 will be described later.

The pins 400 are provided to guide the burrs 10 drawn into the bur holder 200 to one side or the other side.

The pins 400 are fitted into the burrs 200 in the direction perpendicular to the direction in which the burrs 10 are drawn into the burrs 200 and the burrs 200 are fitted to the burrs 200, The burr 10 can be guided in one direction or the other.

On the other hand, when the burrs 10 drawn into the burr holder 200 are required to be drawn out, the pins 400 may be lifted and the burrs 200 may be disconnected from the burrs 10.

The spring 500 is provided to urge the bur holder 200 in one direction or the other direction by an elastic force.

The spring 500 is inserted into a receiving space 107 to be described later and is engaged with the other side of the shaft 100 and the other side of the bur holder 200, 300 in the insertion space 107, which will be described later.

That is, when the spring 500 is pulled into the receiving space 107, which will be described later, the spring 500 is brought into contact with one side of the receiving space 107, which will be described later, and the other side thereof is brought into contact with the spring seat 300 .

Although not shown in the figure, the spindle of the present embodiment is connected to the other side of the spring seat 300, and a driving unit (not shown) for transmitting a driving force to the spring seat 300 through a driving shaft have.

Accordingly, when the driving force is transmitted from the spring seat 300 to the spring 500, the spring seat 300 can be released in one direction by the elastic force.

When the spring seat 300 is spaced apart in one direction, the burr holder 200 to which the spring seat 300 is fitted may also be spaced in one direction.

If the driving force of the driving unit (not shown) is released, the spring seat 300 can be released to the home position in one direction by the elastic force of the spring 500.

In addition, if the spring seat 300 is released to the original position, the burher holder 200 can also be released to the original position.

FIG. 2 is a cross-sectional view illustrating one side of a spindle in which a guide region is extended according to an embodiment of the present invention.

Referring to FIG. 2, the shaft 100 may be formed with an inclined member 101 and a first step 103 so that one side of the burher 200 is fixed and fastened to the internal space.

The inclined member 101 may be formed at the inner periphery of the shaft 100 so that the burher holder 200 is fixed in the inner space of the shaft 100. [

At this time, the inclined member 101 may be formed integrally with the shaft 100.

The slope member 101 protrudes in a direction perpendicular to the direction in which the bur 10 is drawn into the bur holder 200 so that the slope member 101 comes into contact with the outer periphery of the bur holder 200, 100).

The burr holder 200 may be bent in a shape in which a part of the outer circumferential edge of the bur holder 200 which is brought into contact with the slant member 101 is inserted into the slant member 101 in order to be fixed to the inner space of the shaft 100.

The first step 103 extends from one side of the inclined member 101 in the direction perpendicular to the direction in which the burr 10 is drawn into the burr holder 200 so that the burr holder 200 is fastened, It is possible to prevent the burher 200 from being unfurled in one direction by the elastic force of the spring 500 applied.

As a result, even if the elastic force of the spring 500 is applied in the unidirectional direction, the shaft 100 is maintained in the state where the burr holder 200 is fastened to the first step 103, No external deformations may occur.

In addition, the first step 103 may be formed to prevent the burher holder 200 from being released from the shaft 100 outward due to the elastic force of the spring 500.

FIG. 3 is a cross-sectional view showing the other side of a spindle in which a guide region is extended according to an embodiment of the present invention, FIG. 4 is a view showing a state in which a spring seat according to an embodiment of the present invention is fitted Fig.

3 to 4, the shaft 100 may be formed with a second step 105 so that the spring seat 300 is fastened.

At this time, the second step 105 may be formed at one side of the insertion space 107 formed on the other side of the shaft 100 for fastening the spring seat 300.

Meanwhile, the inlet space 107 may be equal to or slightly smaller than the diameter of the spring seat 300 to which the diameter of the inner circumference is fitted, so that the spring seat 300 is fitted.

However, in order to allow the spring seat 300 to be spaced apart from the burher 200 by the elastic force of the spring 500, the inner space of the inlet space 107 is smaller than the diameter of the spring seat 300 Lt; / RTI >

The other side of the bucket holder 200 having a diameter smaller than that of the spring seat 300 fitted into the inlet space 107 may be spaced apart from the inlet space 107.

Meanwhile, the spring seat 300 to be fitted into the lead-in space 107 may be the plate 310.

The fact that the plate 310 is fastened to the second step 105 means that the plate 310 is not fastened directly to the second step 105 but the second step 105, And the spring 500 positioned between the first and second ends 105 and 105 may be fastened to the second step 105.

When the driving force of the driving unit (not shown) is transmitted to the spring seat 300 and the spring seat 300 is spaced in one direction, the spring 500 is urged by the spring force of the spring seat 300 in the receiving space 107 It is possible to make a clearance to one side.

The spring seat 300 can be prevented from being unfurled in one direction by the elastic force of the spring 500 applied in the one-side direction by fitting into the insertion space 107 of the plate 310.

Therefore, even if the elastic force of the spring 500 is applied in one direction by inserting the plate 310 into the lead-in space 107, the burr holder 200 and the spring seat 300 are moved in the direction of one side So that no external deformation due to collision with the burher holder 200 and the plate 310 may occur.

The second step 105 is formed such that the spring sheet 300 including the plate 310 contacting the other side of the spring 500 is engaged with the spring 500 even though the spring sheet 300 is spaced in one direction, And can be held in the fitting state from the receiving space 107.

The second step 105 is such that the plate 310 is directly fastened to the second step 105 so that the spring seat 300 is spaced in one direction, And can be prevented from being detached from the casing 107.

To this end, one side of the spring 500 can be inserted through the inside of the shaft 100 in the horizontal direction in which the bur 10 is drawn into the bur holder 200.

Further, the spring 500 may be further extended in the horizontal direction in the direction in which the burr 10 is inserted into the burr holder 200 than that shown in the drawing.

When the spring seat 300 is released in one direction by the driving force of the driving unit (not shown), the spring 310 is pulled into the shaft 100 by reducing the length of the spring 500 by the elastic force, (Not shown).

Referring to FIGS. 3 to 4 again, the third step 201 may be formed on the inner circumference of the other side of the bur holder 200 so that the spring seat 300 to be fitted to the other side is fastened.

The spring sheet 300 fastened to the third step 201 may be a plurality of stoppers 330 protruding from the plate 310 in one direction.

The plurality of stoppers 330 elastically protrude from the plate 310, and one end of each stopper can be held in contact with each other.

When the plurality of stoppers 330 are drawn into the inner space of the plate 310 after the other one of the stoppers 330 is drawn into the other side of the burher 200, So that the ends of one side are spaced apart from each other and can be fastened to the third step 201.

That is, even if a plurality of stoppers 330 are pulled out to the other side of the burr holder 200, the spring sheet 300 can not be inserted into the plate 310, It can be separated from the other side of the burher holder 200. [

Alternatively, the plurality of stoppers 330 may be configured such that when one end of the plurality of stoppers 330 is spaced apart from the third step 201 by an external force, one end of the plurality of spaced stoppers 330, (201) can be screwed or welded and kept in contact.

5 is a cross-sectional view illustrating a spindle in which a guide region having a first O-ring applied thereto is extended according to an embodiment of the present invention.

Referring to FIG. 5, the spindle of the present embodiment may further include a first O-ring 600 at an inner periphery of one side of the burher holder 200.

The first O-ring 600 is opened at one side and the other side, and can cover the burr 10 which is introduced into the bur holder 200.

The first O-ring 600 encloses the burr 10, thereby absorbing vibration generated in the bur 10.

In addition, the first O-ring 600 is in close contact with the outer periphery of the burr 10, thereby preventing foreign matter such as dust, saliva or the like that is drawn from one side from flowing to the other side of the burher 200.

On the other hand, the first O-ring 600 may have an outer ring closely contacting the inner circumference of the bur holder 200 and an inner ring closely contacting the outer circumference of the bur 10.

For example, if the sectional shape of the inner circumference of the burher holder 200 is a quadrangle and the cross-sectional shape of the bur 10 is circular with respect to the vertical direction of the direction in which the bur 10 is drawn into the bur holder 200, The outer ring of the first O-ring 600 has a rectangular cross-sectional shape and is in close contact with the inner circumference of the bur holder 200 to prevent foreign matter from passing through the space between the inner circumference of the bur- The inner ring of the O-ring 600 has a circular cross-sectional shape and can be brought into close contact with the outer periphery of the bur 10 in order to prevent foreign matter from passing through the space between the outer periphery of the bur 10 and the outer periphery.

The burr holder 200 may be configured to prevent the position of the first O-ring 600 from being deformed due to the process of the burr 10 being pulled into the burr holder 200 or the vibration generated in the burr 10 And the first o-ring 600 may be formed.

Since the first O-ring 600 can be worn by the rotation of the bur 10, it can be formed of a wear-resistant material.

In addition, the first O-ring 600 can be formed of a material that can not be corroded because foreign materials can be drawn into one side of the burher 200.

FIG. 6 is a cross-sectional view illustrating a spindle in which a guide region having a second O-ring is extended according to an embodiment of the present invention, and FIG. 7 is a sectional view of a second O-ring according to an embodiment of the present invention.

6 to 7, the spindle of the present embodiment may further include a second O-ring 700 that surrounds the burher 200 and the pin 400 in the other direction of the first O-ring 600.

The second O-ring 700 may be opened at one side and the other to cover the burher 200 and the pin 400.

At this time, the spindle of the present embodiment may not be constituted or configured with the first O-ring 600 and the second O-ring 700 described above.

The second O-ring 700 encloses the burher 200 and the pin 400 to absorb vibrations transmitted from the burr 10 to the burher 200 and the pin 400.

The second O-ring 700 may have an outer ring closely contacting the inner circumference of the shaft 100 and an inner ring closely contacting the outer circumference of the bur holder 200 and the pin 400.

For example, if the cross-sectional shape of the inner peripheral edge of the shaft 100 is a quadrangle in the direction perpendicular to the direction in which the bur 10 is drawn into the bur holder 200, the outer ring of the second O- Sectional shape of the shaft 100 in order to prevent the outer shape of the shaft 100 from being deformed due to the vibration transmitted to the shaft 100 from the pin 400 and the pin 400. Therefore, have.

7, the inner ring of the second O-ring 700 is formed so that the vibration generated from the bur 10 is absorbed without being transmitted to the bur holder 200 and the pin 400, An inlet hole 701 through which the terminal 200 and the pin 400 are inserted can be formed.

In addition, the second O-ring 700 allows the burr holder 200 and the pin 400 to be drawn into the inlet hole 701, thereby strengthening the binding force of the pin 400 fitted to the bur holder 200 .

The second O-ring 700 may be made of the same material as the first O-ring 600. The second O-ring 700 may be formed of the same material as the first O- And is prevented from being damaged by frictional force between the bur holder 200 and the pin 400.

The burr holder 200 is in close contact with the inner ring of the second O-ring 700 and a fourth step 202 is further formed to support the pin 400 fitted to the burher 200 .

8 is a cross-sectional view illustrating a spindle in which a guide region having a third O-ring is extended according to an embodiment of the present invention.

Referring to FIG. 8, the spindle of the present embodiment may further include a third O-ring 800 for smearing the outer periphery of the burher 200 in the other direction than the second O-ring 700.

The third O-ring 800 can be opened at one side and the other to cover the outer periphery of the burher 200.

At this time, the spindle of the present embodiment may or may not include the first O-ring 600 and the second O-ring 700 and the third O-ring 800 together.

Also, the spindle of the present embodiment may include at least one O-ring of the first O-ring 600, the second O-ring 700 and the third O-ring 800 described above.

On the other hand, the third O-ring 800 is located at the other of the O-rings of the present embodiment and surrounds the outer circumference of the bur-holder 200, so that the bur-holder 200 is inserted into and withdrawn from the inner space of the shaft 100 The vibration generated by the clearance between the shaft 100 and the bur holder 200 can be absorbed.

Here, the clearance may mean a gap between the shaft 100 and the bur holder 200, which is formed to allow the bur holder 200 to be drawn into and drawn out of the inner space of the shaft 100.

The vibration absorbed by the third O-ring 800 may be vibration generated in the burr 10 and transmitted in the order of the shaft 100 of the bur holder 200.

As the third O-ring 800 absorbs the vibration, the inner circumference of the shaft 100 and the outer circumference of the burher 200 are prevented from vibrating and colliding with each other, It is possible to protect the external shape of the body 200.

In addition, the third O-ring 800 may have an outer ring closely contacting the inner circumference of the shaft 100 and an inner ring closely contacting the outer circumference of the bur-holder 200.

For example, the cross-sectional shape of the inner peripheral edge of the shaft 100 is a quadrangular shape with respect to the vertical direction of the direction in which the burr 10 is drawn into the bur holder 200, The outer ring of the third O-ring 800 has a rectangular cross-sectional shape in order to prevent the vibration generated in the bur 10 and transmitted to the bur holder 200 from being transmitted to the shaft 100, And the inner ring of the third O-ring 800 has a circular cross-sectional shape to prevent the vibration generated in the burr 10 from being transmitted to the bur holder 200, As shown in Fig.

The third O-ring 800 may be made of the same material as that of the first O-ring 600 and the second O-ring 700, So as to prevent damage due to frictional force.

 According to the embodiment of the present invention described above, the vibration of the bur buried in the burr holder extended in the guide region is reduced, so that the operator can easily perform precision machining for cutting and polishing the teeth.

And each O-ring absorbs the vibration transmitted from the burr to each component, thereby minimizing the deformation of each component due to vibration.

Further, the buckle holder and the spring seat are fastened to each other through the step of the shaft to prevent the buckle holder and the spring seat from colliding with each other due to the elastic force of the spring applied in one direction, thereby preventing the shaft from being deformed .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention.

10: Burr 100: Shaft
101: slant member 103: first stage
105: 2nd step 107: Entry space
200: Burr holder 201: Third stage
300: spring seat 310: plate
320: fixing member 330: plural stoppers
400: pin 500: spring
600: first o-ring 700: second o-ring
701: Inlet hole 800: Third o-ring

Claims (10)

A shaft having one side and the other side opened;
A burr holder which is inserted into the inner space of the shaft and has one side and the other side opened; And
And a spring seat which is inserted into the other side of the shaft and is partially fitted to the other side of the burr holder,
Wherein the burr holder comprises:
A guide region for guiding the burr into the burr holder from the one side to a point where a part of the spring seat fitted to the burr holder is inserted,
A pin fitted to the burr holder and guiding the burr drawn in the guide region to be spaced in one direction or the other direction; And
And a spring which is provided in a lead-in space formed on the other side of the shaft and is made of a material having an elastic force and which is engaged with the other side of the bur holder and the bur holder to be spaced in one direction or the other direction Including,
The shaft includes:
An inclined member protruding in a direction perpendicular to a direction in which the bur is drawn into the guide area, the beveled member being in contact with the bur-holder to fix the bur-holder;
A first step formed from one side of the inclined member to prevent the burr holder from colliding with the shaft due to an elastic force applied from the spring in one direction; And
And a second step protruding from one side of the lead-in space in a direction perpendicular to the direction in which the burr is drawn into the guide area, thereby locking the spring so that the spring is provided in the lead-in space,
Wherein the burr holder comprises:
And a third step formed on an inner circumference of the other side of the bur holder to prevent the fitted spring seat from being separated from the other side of the bur holder by the spring when the spring seat is fitted Including,
The spring sheet
And is fitted to the other side of the shaft to reinforce the coupling force,
The spring sheet
A plate which is fitted in the inlet space and is brought into close contact with the other side of the burr holder to close the other side of the shaft and abuts against the other side of the spring provided in the inlet space;
A fixing member passing through the plate in a direction parallel to the direction in which the bur is drawn into the guide area and being fitted to the plate when the plate is in close contact with the other side of the burr holder; And
Wherein the plate is protruded from the plate in a direction away from the plate by a predetermined distance, each end of the plate is bent outward, and when the plate is in close contact with the other side of the bucket holder, And a plurality of stoppers elastically supported from the plate,
The plurality of stoppers may include:
In the state where the fixing member is separated from the plate, the respective ends of the fixing members are held in contact with each other by elasticity, so that it is easy to pull in and out of the other side of the buffer holder. When the fixing member is fitted to the plate, The respective ends are spaced apart from each other by the fixing member, and are prevented from being separated by being fastened to the third step,
A first O-ring provided at one side of the guide region and having one side and the other side opened, a first O-ring surrounding the burr drawn into the guide region and absorbing vibration generated in the burr drawn into the guide region;
A second O-ring which is provided in a space between the shaft and the burr holder and which is opened at one side and the other side and absorbs vibration transmitted from the burr drawn in the guide region to the shaft and the pin by surrounding the pin; And
Wherein the shaft and the burr holder are provided in a space between the shaft and the burr holder and one side and the other side are opened so that the vibration generated in the shaft and the bur holder due to the clearance between the shaft and the bur holder, And a third O-ring for absorbing the second O-
The first O-
In order to prevent foreign matter from passing through the space between the inner periphery of the burr holder and the outer periphery of the bur, when the shape of the cross section of the inner periphery of the bur holder is a quadrangle and the cross section of the bur is circular, Sectional shape of the inner ring is formed in a quadrilateral shape, the cross-section of the inner ring is formed in a circular shape,
The second O-
In order to prevent the outer shape of the shaft from being deformed by the vibration transmitted to the shaft from the bur holder and the pin when the inner peripheral edge of the shaft has a rectangular shape in cross section, Wherein a shape of the pin is formed in a quadrilateral shape and a cross-sectional shape of the inner ring is formed in a quadrilateral shape so that the inner ring surrounds the pin,
Wherein the inclined member is formed integrally with the shaft,
Wherein the burr holder is formed as an integral single piece. delete delete delete delete delete delete delete delete delete
KR1020170053645A 2017-04-26 2017-04-26 Spindle with extended guide area KR101874787B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5130460B2 (en) * 2006-12-11 2013-01-30 並木精密宝石株式会社 Micro spindle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5130460B2 (en) * 2006-12-11 2013-01-30 並木精密宝石株式会社 Micro spindle

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