KR101684685B1 - Light module and handpiece for dental treatment with the same - Google Patents

Abstract

A motorcycle comprising: a motor unit including an electric motor therein; and an angle unit coupled to the motor unit for receiving power of the electric motor and rotating a file, (Light) projected from the light source. The disclosed lighting module includes a light source that emits light and a power supply circuit board that is connected to the light source so as to be energizable and that is disposed inside the motor unit when the lighting module is coupled to the handpiece body, And a module terminal which is connected as far as possible.

Description

Technical Field [0001] The present invention relates to a light module and a handpiece for dental treatment,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handpiece for dental treatment, and more particularly, to a lighting module detachably attached to a handpiece to illuminate the inside of the mouth and a handpiece for dental treatment.

The handpiece for dental treatment is a mechanism for cutting or drilling the teeth, internal tissues, jawbone or the like by rotating a small tool file at a high speed, for example, a handpiece for neural therapy, a handpiece for implantation, and the like . A dental treatment handpiece includes a motor unit including an electric motor and a head detachably coupled to the dental unit, the dental unit being connected to the dental unit by a dentist, wherein the rotational force of the electric motor is transmitted to the file And an angle unit for rotating the file at a high speed.

On the other hand, a light stand is usually provided to illuminate the area where the oral cavity is dark and needs treatment. However, because the lighting stand shines behind the dentist's head and inside the patient's mouth, a still dark blind spot can still be created inside the mouth. Accordingly, a handpiece including a light source for irradiating light into the oral cavity is disclosed. However, the handpiece containing such a light source is disadvantageous because it is difficult to grasp and work with a dentist who does not use the lighting function, because the handpiece holding the light source is thickened by the hand due to the embedded light source. In addition, even when the illumination function is used, the illuminance at the point where the light is irradiated in the oral cavity and the illuminance at the spot are fixed, which may cause inconvenience depending on the habit and taste of the dentist.

Korean Registered Patent No. 10-106447

The present invention provides a lighting module detachably attachable to a handpiece body and capable of illuminating the interior of the mouth during dental treatment using a handpiece, and a handpiece for dental treatment comprising the same.

The present invention relates to a motor unit including an electric motor inside and an angle unit coupled to the motor unit and receiving power of the electric motor to rotate a file, A light source for emitting light and a light source connected to the light source so as to be energized when the light module is coupled to the handpiece body, And a module terminal electrically connected to the power supply circuit board disposed inside the motor unit.

The illumination module of the present invention may further include a light guide member for guiding the light emitted by the light source to the head portion.

Wherein the module terminal is a spring terminal made of a metal material that is elastically deformed and when the lighting module is coupled to the handpiece body, the module terminal is elastically deformed in close contact with the power supply circuit board, The module terminal can be resiliently restored.

When the lighting module is coupled to the handpiece body, the light source may be disposed in an area of the angle unit beyond a boundary line between the motor unit and the angle unit.

The lighting module of the present invention includes a pair of wings that are elastically restorable so as to surround a portion of the angle unit when the lighting module is coupled to the handpiece body, And the auxiliary support may be separated from a portion of the angle unit when the pair of wings is separated from the angle unit.

When the lighting module is coupled to the handpiece body, the light source may be disposed within an area of the motor unit without exceeding a boundary line between the motor unit and the angle unit.

The lighting module of the present invention is characterized in that the lighting module is fastened to the motor unit when the lighting module is moved in one direction along the longitudinal direction of the motor unit and when the lighting module is moved in the direction opposite to the one direction, At least one hook in which the released state is released.

The lighting module of the present invention may have a projection or groove for enhancing friction in a portion where the finger touches, in order to push and move the lighting module with the finger force in the one direction and the opposite direction.

The present invention also provides a dental treatment device comprising: a motor unit including an electric motor as a portion gripped by an operator during a dental treatment; and a motor coupled to the motor unit, wherein a file is detachably coupled, A handpiece body having an angle unit for receiving and rotating the file, and a handpiece for dental treatment comprising the illumination module.

The motor unit may include a locking jaw that contacts the distal end of the lighting module when the lighting module is coupled to the handpiece body to prevent the lighting module from moving excessively relative to the motor unit.

According to the dental treatment handpiece of the present invention, it is possible to use the handpiece by changing the lighting module according to the operation preference of the dental practitioner, thereby contributing to maintenance of concentration and psychological stability during the procedure and enhancing the success rate of the dental procedure.

Also, since the illumination module can be attached to the handpiece body only when brighter illumination is required for dental procedures, a dental operator who does not need an illumination module can use the lightweight handpiece in which the illumination module is separated have.

Further, since the terminal of the handpiece, which is electrically connected to the terminal of the lighting module, is not protruded to the outside of the handpiece housing, there is no risk of damage due to impact or corrosion, and there is less concern about short circuit.

1 and 2 are a side view and a perspective view, respectively, of a handpiece for dental treatment according to a first embodiment of the present invention, FIG. 1 is a view showing a combined state of a lighting module and a handpiece body, And the handpiece body is separated.
FIG. 3 is a perspective view showing a portion where the lighting module is attached to and detached from the front face of the handpiece body shown in FIG. 2;
4 is an enlarged cross-sectional view of a portion IV in Fig.
5 and 6 are a side view and a perspective view, respectively, of a handpiece for dental treatment according to a second embodiment of the present invention, FIG. 5 is a view illustrating a combined illumination module and a handpiece body, And the handpiece body is separated.
7 is an enlarged cross-sectional view of the portion VII of Fig.

Hereinafter, a lighting module according to an embodiment of the present invention and a dental treatment handpiece having the same will be described in detail with reference to the accompanying drawings. The terminology used herein is a term used to properly express the preferred embodiment of the present invention, which may vary depending on the intention of the user or operator or the custom of the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

1 and 2 are a side view and a perspective view, respectively, of a handpiece for dental treatment according to a first embodiment of the present invention, FIG. 1 is a view showing a combined state of a lighting module and a handpiece body, And the handpiece body is separated. FIG. 3 is a perspective view showing a portion where the lighting module is attached to and detached from the front face of the handpiece body shown in FIG. 2, and FIG. 4 is an enlarged cross-sectional view of the portion IV of FIG. 1 to 4, a dental treatment handpiece 1A according to a first embodiment of the present invention includes a handpiece body 2, an illumination module (not shown) detachably coupled to the handpiece body 2, (30).

The handpiece body 2 has a motor unit 10 which is a part gripped by a practitioner, that is, a dentist at the time of dental treatment, and an angle unit 3 which is coupled to the distal end of the motor unit 10 . The motor unit 10 includes an electric motor (not shown) inside a motor unit housing 11 extending in a direction parallel to the Z axis, and the lighting module 30 is detachably attached to the motor unit housing 11 Lt; / RTI >

The angle unit 3 includes a head portion 4 to which a file 9 is detachably coupled, a motor unit engaging portion 6 that is a portion coupled to the motor unit 10, And a neck portion 7 extending from the motor unit 10 at an angle with respect to the longitudinal direction of the motor unit 10 by connecting the head portion and the motor unit engaging portion 6. [ The angle unit 3 receives the power of an electric motor (not shown) of the motor unit 10 and rotates the pile 9.

The illumination unit 30 is coupled to the handpiece body 2 and projects light toward the pile 9. The lighting unit 30 includes a lighting unit housing having a base 31 and a cover 40 coupled to the base 31. The lighting unit 30 includes a housing 31, And a power supply circuit board 22 disposed inside the motor unit 10 when the lighting module 30 is coupled to the handpiece body 2 so as to be energized And a pair of module terminals (48).

The cover 40 is provided with a first hook 42 protruding toward the motor unit housing 11. The first hook 42 is bent in the middle and extends in parallel with the direction of the Z-axis negative (-), and a protrusion 43 protruding in the direction away from the motor unit housing 11 is formed at the distal end thereof. A second hook 35 protruding toward the motor unit housing 11 and extending in parallel to the Z axis negative direction is provided at one end of the base 31.

A first hook fastening opening 13 and a second hook fastening opening 15 are formed on a side surface of the motor unit housing 11 facing the lighting module 30 so that the first hook 42 and the second hook 35 can be fastened. And a hook interference protrusion 15 is formed inside the first hook fastening opening 13. [ The first hook 42 and the second hook 35 are inserted into the first hook fastening opening 13 and the second hook fastening opening 18 when the lighting module 30 is coupled to the hand piece body 2, And the lighting module 30 is moved in one direction along the longitudinal direction of the motor unit 10, that is, in the direction parallel to the direction of the Z-axis negative (-), the end protrusions 43 of the first hook 42 Hook interference projections 15 and the second hooks 35 are hooked around the second hook fastening openings 18 to fasten the lighting module 30 to the motor unit housing 11. [

On the other hand, the engaging step 20 is formed around the second hook fastening opening 18 of the motor unit housing 11. When the first hook 42 and the second hook 35 are fastened to the motor unit housing 11 and the lighting module 30 is coupled to the handpiece body 2, The lighting module 30 does not move excessively in the direction parallel to the direction of the Z axis negative (-) with respect to the motor unit 10 because it is in contact with the latching jaw 20 and is blocked.

When the lighting module 30 coupled to the handpiece body 2 is moved in the direction opposite to the one direction along the longitudinal direction of the motor unit 10, that is, in the direction parallel to the positive (+) direction of the Z axis, The end protrusion 43 of the hook 42 passes over the hook interference protrusion 15 to release the engagement of the first hook 42 and the hook interference protrusion 15 and the engagement of the second hook 35 and the second hook- When the lighting module 30 is separated from the motor unit 10 in this state, the first hook 42 and the second hook 35 are engaged with the first hook engagement opening 13, And the second hook fastening opening 18 and the lighting module 30 is separated from the hand piece body 2. [

A plurality of projections 32 are formed on the outer surface of the base 31. When the lighting module 30 is fastened to the motor unit 10 or the lighting module 30 is separated from the motor unit 10, the lighting module 30 is moved in the longitudinal direction of the motor unit 10 by the finger force of the operator The plurality of protrusions 32 can easily increase the friction when the operator touches and pushes the base 31 with his / her fingers to push the lighting module 30 to the motor unit 10 with a small force, Or separating them. The plurality of projections 32 may extend in a direction parallel to the Y axis which is orthogonal to the direction of the finger force, that is, the direction parallel to the Z axis. However, the means for enhancing the friction with the finger is not limited to the projection 32, but may have a concave groove instead of the projection 32. On the other hand, first and second cover supporting protrusions 37 and 38 protrude from the inner surface of the base 31 to support the cover 40 so that the cover 40 is not depressed toward the base 31.

The other end of the base 31 is provided with an auxiliary support 33 for holding the neck 7 of the angle unit 3 when the lighting module 30 is coupled to the handpiece body 2. [ The auxiliary support member 33 has a pair of blades 33a and 33b extending in a curved shape corresponding to the curved shape of the outer peripheral surface of the neck portion 7 and being elastically restorable and the pair of blades 33a and 33b, The space 33b is spaced apart. When the lighting module 30 is coupled to the handpiece body 2 a pair of blades 33a and 33b surround the neck 7 of the angle unit 3 so that the lighting module 30 is firmly held by the hand Is coupled to the piece body (2). Conversely, when the lighting module 30 is detached from the handpiece body 2, the space 33b between the pair of blades 33a, 33b is resiliently restored to allow the auxiliary support 33 to move in the neck 7, Lt; / RTI >

The pair of module terminals 48 are resiliently deformable metal spring terminals that are bent at the middle portion and protrude out of the lighting module 30 through the terminal protrusion opening 45 formed in the cover 40. The bent middle portion of the module terminal 48 is a terminal contact portion 49 that contacts the terminal 23 formed in the power supply circuit board 22 inside the module unit housing 11. [ The motor unit housing 11 is provided with a terminal contact portion 49 of the pair of module terminals 48 and a pair of terminals 23 formed on the circuit board 22 so as to be able to be energized A pair of terminal connection openings 17 are formed. When the lighting module 30 is coupled to the handpiece body 2, the terminal contact portion 49 of the module terminal 48 passes through the terminal connection opening 17 and is brought into close contact with the terminal 23 of the circuit board 22 And is elastically deformed. When the lighting module 30 is detached from the handpiece body 2, the terminal contact portion 49 is separated from the terminal 23 of the circuit board 22 so that the power supply circuit is disconnected. ) Is resiliently restored.

The light source 47 is supported on the other end of the base 31 in the vicinity of the auxiliary support 33 and projects light parallel to the direction toward the pile 9, Exposed to the outside of the lighting module housing. The light source 47 may be a light emitting diode (LED). 2 and 4, the light source 47 is electrically connected to the module terminal 48 through, for example, a flexible printed circuit board (FPCB), a lead wire, or the like.

Although not shown in the drawing, the lighting module 30 may further include a light guide member for guiding the light emitted from the light source 47 to the head portion 4. The light projected from the light source 47 can brightly illuminate the inside of the oral cavity even though the lighting module 30 uses the handpiece 1A while being coupled to the handpiece body 2 during the dental procedure, optic fiber and a light guiding member is applied to the neck portion 7 of the angle unit 3 so that the light of the light source 47 is emitted from the head portion 4 And the portion where the pile 9 and the head 4 enter the inside of the oral cavity can be illuminated with the light of the light source 47 without any blurred and blind spot.

5 and 6 are a side view and a perspective view, respectively, of a handpiece for dental treatment according to a second embodiment of the present invention, FIG. 5 is a view illustrating a combined illumination module and a handpiece body, And the handpiece body is separated. 7 is an enlarged cross-sectional view of the portion VII of Fig. 5 to 7, a dental treatment handpiece 1B according to a second embodiment of the present invention includes a handpiece body 2, an illumination module (not shown) detachably coupled to the handpiece body 2, (60). The handpiece body 2 described with reference to Figs. 1 to 4 is the same as the handpiece body 2 of the handpiece 1A according to the first embodiment of the present invention, and thus a duplicate description will be omitted.

The illumination unit (60) is coupled to the handpiece body (2) and projects light toward the pile (9). The lighting unit 60 includes a lighting unit housing having a base 61 and a cover 70 coupled to the base 61 and a lighting unit housing 70 mounted on the lighting unit housing, And a power supply circuit board 22 disposed inside the motor unit 10 when the lighting module 60 is coupled to the handpiece body 2 so as to be energized And has a pair of module terminals 78.

The cover 70 is provided with a first hook 72 protruding toward the motor unit housing 11 and is provided at one end of the base 61 to protrude toward the motor unit housing 11, -) extending parallel to the direction of the second hook 65. The second hook 65 extends in parallel with the direction of the second hook 65. [ The first hook 72 and the second hook 65 have the same configurations as those of the first hook 42 and the second hook 35 described with reference to FIGS. 1 to 4, and thus duplicate descriptions are omitted.

When the lighting module 60 is coupled to the handpiece body 2, the first hook 72 and the second hook 65 are inserted into the first hook-fastening opening 13 and the second hook-fastening opening 18, respectively And the lighting module 60 is moved in one direction along the longitudinal direction of the motor unit 10, that is, in the direction parallel to the direction of the Z-axis negative (-), the end projections 73 of the first hooks 72 And the second hook 65 is hooked around the second hook fastening opening 18 so that the lighting module 60 is fastened to the motor unit housing 11. When the first hook 72 and the second hook 65 are fastened to the motor unit housing 11 and the lighting module 60 is coupled to the handpiece body 2, The light module 60 does not move excessively in the direction parallel to the direction of the Z axis negative (-) with respect to the motor unit 10 since the light module 60 is in contact with the latching jaw 20 and is blocked.

When the lighting module 60 coupled to the handpiece body 2 is moved in the direction opposite to the one direction along the longitudinal direction of the motor unit 10, that is, in the direction parallel to the positive Z-axis direction, The end protrusion 73 of the hook 72 passes over the hook interference protrusion 15 to release the engagement of the first hook 72 and the hook interference protrusion 15 and the engagement of the second hook 65 and the second hook- When the lighting module 60 is separated from the motor unit 10 in this state, the first hook 72 and the second hook 65 are engaged with the first hook engagement opening 13, And the lighting module 60 is separated from the handpiece body 2 by the second hook fastening opening 18.

A plurality of projections 62 are formed on the outer surface of the base 61. When the lighting module 60 is fastened to the motor unit 10 or the lighting module 60 is detached from the motor unit 10, the lighting module 60 is moved in the longitudinal direction of the motor unit 10 by the finger force of the operator The plurality of protrusions 62 can easily increase the friction when the operator touches and pushes the base 61 with his / her fingers and pushes the lighting module 60 to the motor unit 10 with a small force, Or separating them. The plurality of protrusions 62 may extend in a direction parallel to the Y axis orthogonal to the direction of the finger force, that is, the direction parallel to the Z axis. However, the means for enhancing the friction with the finger is not limited to the projection 62, but may be provided with a concave groove instead of the projection 62. The first and second cover supporting protrusions 67 and 68 protrude from the inner surface of the base 61 to support the cover 70 so that the cover 70 is not depressed toward the base 61.

The pair of module terminals 78 are resiliently deformable metal spring terminals which are bent at the intermediate portion and protrude out of the lighting module 60 through the terminal protrusion opening 75 formed in the cover 70. The bent middle portion of the module terminal 78 is a terminal contact portion 79 that contacts the terminal 23 formed in the power supply circuit board 22 inside the module unit housing 11. [ When the lighting module 60 is coupled to the handpiece body 2, the terminal contact 79 of the module terminal 78 penetrates through the terminal connection opening 17 of the motor unit housing 11, And is elastically deformed by being brought into close contact with the terminal (23). When the lighting module 60 is separated from the handpiece body 2, the terminal contact portion 79 is separated from the terminal 23 of the circuit board 22 so that the power supply circuit is disconnected. ) Is resiliently restored.

A light source partition wall 66 protruded to fix the light source 77 in the base 61 is provided on the inner side surface of the base 61. The light source 77 is provided on the other end of the base 61, In a groove separated by a groove (not shown). The light source 77 is exposed to the outside of the lighting module housing to project light parallel to the direction toward the file 9, that is, the Z-axis positive (+) direction. The light source 47 may be a light emitting diode (LED). 6 and 7, the light source 77 is electrically connected to the module terminal 78 via, for example, a flexible printed circuit board (FPCB), a lead wire, or the like.

Although not shown in the drawing, the illumination module 60 may further include a light guide member for guiding the light emitted from the light source 77 to the head portion 4. The light projected from the light source 77 can brightly illuminate the inside of the oral cavity even though the lighting module 60 uses the handpiece 1B in a state in which the illumination module 60 is coupled to the handpiece body 2. However, optic fiber and a light guiding member is applied to the neck portion 7 of the angle unit 3 so that the light of the light source 77 is emitted from the head portion 4 The portion where the pile 9 and the head 4 enter the inside of the mouth can be illuminated with the light of the light source 77 without any blurred and blind spot.

1 and 5, in the case of the handpiece 1A according to the first embodiment of the present invention, when the lighting module 30 is coupled to the handpiece body 2, The light source 47 is disposed within the area of the angle unit 3 and the module terminal 48 (see FIG. 2) is disposed in the vicinity of the boundary line BL between the motor unit 10 and the angle unit 3 Area. On the other hand, in the case of the handpiece 1B according to the second embodiment of the present invention, when the illumination module 60 is coupled to the handpiece body 2, the distance between the motor unit 10 and the angle unit 3 The light source 77 and the module terminal 48 (see FIG. 2) are both disposed in the area of the motor unit 10, instead of the light source 77 disposed in the area of the angle unit 3, .

Therefore, the illumination module 30 of the first embodiment is closer to the pile 9 than the illumination module 60 of the second embodiment, so that the inside of the mouth can be brighter when dental procedures are performed. However, depending on the working habits and preferences of the dental practitioner, the lighting module 30 of the first embodiment may feel too bright to interfere with the dental procedure, and in such a case, the lighting module 60 of the second embodiment may be used It can not be concluded that the lighting module 60 of the second embodiment of the lighting module 30 of the first embodiment is superior to the lighting module 60 of the second embodiment. In addition, the lighting module 60 of the second embodiment is smaller than the lighting module 30 of the first embodiment, which is advantageous in that it is more convenient to carry.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1A, 1B: Handpiece for dental treatment 2: Handpiece body
3: Angle unit 4: Head
10: motor unit 22: circuit board
30, 60: Lighting module 35, 42, 65, 72: Hook
47,77: Light source 48,78: Module terminal

Claims (10)

A motor unit including an electric motor inside and a head portion to which a file is detachably coupled, the motor unit being coupled to the motor unit, 1. An illumination module detachably coupled to a handpiece body having an angle unit for rotating and projecting light toward the file,
A lighting unit housing having a base and a cover coupled with the base;
A light source mounted on a front end of the lighting unit housing; And
A power supply circuit board mounted inside the motor unit when the lighting module is coupled to the handpiece body, the power supply circuit board being mounted on the lighting unit housing and electrically connected to the light source, And a module terminal to be connected,
Wherein the cover has a cover terminal protrusion opening so that the module terminal can pass through the cover terminal protrusion opening and come into contact with the circuit board for power supply of the motor unit,
Wherein one end of the lighting unit housing has an auxiliary support disposed to engage with the angle unit, the periphery of the motor terminal of the lighting unit housing is coupled to the motor unit,
Wherein the auxiliary support includes a pair of wings that are elastically restored to allow the lighting module to surround a portion of the angle unit when the lighting module is coupled to the handpiece body, Wherein the pair of wings are separated from each other at a portion of the angle unit. The method according to claim 1,
And a light guide member for guiding light emitted from the light source to the head portion. The method according to claim 1,
The module terminal is a spring terminal of a metal material which is elastically deformed,
Wherein when the lighting module is coupled to the handpiece body, the module terminal is elastically deformed by coming into close contact with the power supply circuit board, and when the lighting module is separated from the handpiece body, the module terminal is elastically restored Lighting module. delete delete delete The method according to claim 1,
Wherein the lighting module is fastened to the motor unit when the lighting module is moved in one direction along the longitudinal direction of the motor unit and the fastened state is released when the lighting module is moved in a direction opposite to the one direction in a state of being fastened to the motor unit And a single hook. 8. The method of claim 7,
And a protrusion or groove for enhancing friction in a portion where the finger is contacted to push the lighting module in the one direction and the opposite direction with a finger force. A motor unit including an electric motor inside and a head portion detachably coupled to a file, the portion being held by a practitioner during a dental treatment, A handpiece body having an angle unit for receiving a power of the motor and rotating the file; And
A power supply circuit board mounted on an inner space of the motor unit, the power supply circuit board being connected to the module terminals, the lighting module comprising: the lighting module according to any one of claims 1, 2, 3, 7 and 8; Wherein the handpiece is a dental handpiece. 10. The method of claim 9,
Characterized in that the motor unit comprises a latching jaw which contacts the distal end of the lighting module when the lighting module is coupled to the handpiece body and prevents the lighting module from moving excessively relative to the motor unit. Therapeutic handpiece.

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