CN214259536U

CN214259536U - Dental handpiece structure

Info

Publication number: CN214259536U
Application number: CN202120056669.8U
Authority: CN
Inventors: 蔡志毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-09-24
Anticipated expiration: 2031-01-11

Abstract

The utility model relates to a dental handpiece structure, which comprises a head part, wherein the head part comprises a connecting seat, a connecting rod, a thin tip, a front top holding part and two front side holding parts, the connecting rod is convexly arranged at one end of the connecting seat, the thin tip is convexly arranged at the other end of the connecting seat, the front top holding part and each front side holding part are respectively arranged on the outer wall surface of the head part in a concave way around an interval, and the section of the head part at the positions of the front top holding part and each front side holding part is in a triangular ellipse shape; a grab handle, one end of which is provided with a combination groove, the position of the combination groove corresponds to the position of the combination rod, and the combination rod is fixed in the combination groove in a penetrating way; borrow the section that is located the position that the user gripped by connecting seat and grab handle and be the state that approximately triangle ellipse shape gripped in order to accord with ergonomic, reach the easier and accurate control of user the utility model discloses a rotation, and then promote when carrying out the fineness of the operation that needs meticulous operation such as subgingival treatment.

Description

Dental handpiece structure

Technical Field

The utility model relates to an appliance used in dentistry, in particular to a mobile phone which is convenient for holding and accords with human engineering and is used by dentists.

Background

In the prior art, there is a luminous ultrasonic handpiece and a holding color code system as disclosed in U.S. patent publication No. US 7150629B2, wherein one end of the ultrasonic handpiece is provided with a tooth cleaning insert, the ultrasonic handpiece is provided with a coaxial light emitting source at the periphery of the tooth cleaning insert, a water flow channel is formed on the tooth cleaning insert, one end of the water flow channel penetrates through one end of the tooth cleaning insert to form a water outlet, when a doctor performs subgingival treatment, the water outlet sprays water to an affected part of the oral cavity, and the light emitted by the light emitting source illuminates the oral cavity of the patient.

However, in the dental handpiece of the prior art, since the handle and the connecting seat are both designed to be cylindrical, the phenomenon of slipping is easily caused when a doctor holds the dental handpiece and rotates the dental handpiece by using fingers; accordingly, the overall structure of the prior art dental handpiece has problems and disadvantages as described above, and thus needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the disadvantages and shortcomings of the prior art, the present invention provides a dental handpiece structure, which is convenient for a user to hold by making the cross section of the head be in a triangular oval shape.

In order to achieve the above-mentioned creation purpose, the present invention adopts a technical means of designing a dental handpiece structure, which comprises:

a head part, which comprises a connecting seat, a combining rod, a thin tip, a front top holding part and two front side holding parts, wherein the combining rod is convexly arranged at one end of the connecting seat, the thin tip is a bent rod body and is provided with a tip and a water outlet, the tip is positioned at one end of the thin tip, the water outlet is formed at the other end of the thin tip, the thin tip is assembled at the other end of the connecting seat, the front top holding part and each front side holding part are respectively arranged on the outer wall surface of the head part in a surrounding and concave mode at intervals, and the section of the head part positioned at the front top holding part and each front side holding part is in a triangular ellipse shape;

one end of the grab handle is provided with a combination groove, the position of the combination groove corresponds to the position of the combination rod, and the combination rod is assembled in the combination groove in a penetrating way.

Further, in the dental handpiece structure, the handle further includes a rear top holding portion and two rear side holding portions, the rear top holding portion and each of the rear side holding portions are respectively disposed around the outer wall surface of the handle in a recessed manner at intervals, and the cross section of the handle at the positions of the rear top holding portion and each of the rear side holding portions is in a triangular ellipse shape.

Further, the dental handpiece structure is characterized in that the thin tip comprises a base and a bent rod, a connecting groove is formed in a concave surface of one end of the base, the water outlet hole penetrates through the base and is communicated with the connecting groove of the base, the connecting groove of the base is assembled on the connecting seat, one end of the bent rod is connected with the base, the tip is located at the other end of the bent rod, and a water guide channel is formed in a concave manner in the outer wall surface of the bent rod in a manner that the outer wall surface of the bent rod extends from the position of the water outlet hole of the base towards the tip in a concave manner.

Further, the dental handpiece structure is characterized by further comprising a handle tail cover, wherein the handle tail cover is an annular sheet body and is sleeved at the other end of the handle.

Furthermore, the dental handpiece structure further comprises a plurality of anti-slip sleeves, wherein one of the anti-slip sleeves is sleeved and fixed at a position of the connecting seat adjacent to the front top holding part and the front side holding part, and the other anti-slip sleeve of each anti-slip sleeve is sleeved and fixed at a position of the handle adjacent to the rear top holding part and the rear side holding part.

The utility model has the advantages of, because the section that connecting seat and grab handle are located the position that the user gripped is about the oval shape of triangle, consequently can let the user control of accuracy more easily the utility model discloses a rotation, and then promote when carrying on the fineness of the operation that needs meticulous operation such as treatment under the gum, in addition, the setting of the different positions of gripping of preceding top portion of gripping, front side portion of gripping, back top portion of gripping and rear side portion of gripping can let the user select suitable mode of gripping according to the demand, reaches the efficiency that accords with ergonomic.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a partial sectional view of the present invention.

Fig. 4 is another partial cross-sectional view of the present invention.

Fig. 5 is a sectional view of the thin tip of the present invention.

Fig. 6 is a perspective view of the thin tip of the present invention.

Fig. 7 is a schematic view before combination of the present invention.

Fig. 8 is a schematic diagram after combination according to the present invention.

Fig. 9 is a schematic view of the present invention.

Reference numerals and description:

10 head 11 connecting seat

111 front end face 112 front assembly face

113 front holding surface 114 light guide hole

115 light guide groove 116 front top holding part

117 front side grip part 12 coupling rod

13 thin pointed end 131 base

132 bent rod 133 water outlet

134, tip 135, water guide ditch

14 light guide strip 20 handle

21 rear assembly surface 22 coupling groove

23 light source groove 24 light emitting member

241 front end face 242 rear end face

25 elastic member 26 rear top holding part

27 rear side holding part 30 anti-slip cover

40, handle tail cover

Detailed Description

The technical means adopted by the present invention to achieve the predetermined novel object will be further described below with reference to the drawings and the preferred embodiments of the present invention.

Referring to fig. 1, the dental handpiece of the present invention includes a head 10, a handle 20, a plurality of anti-slip sleeves 30, and a handle tail cover 40.

Referring to fig. 1 to 3, the head 10 includes a connecting base 11, a coupling rod 12, a thin tip 13 and a light guide strip 14, the connecting base 11 is a cylindrical body having a front end surface 111, a front assembly surface 112, a front holding surface 113, a light guide hole 114, a light guide groove 115, a front top holding portion 116 and two front side holding portions 117, the front holding surface 113 is located between the front end surface 111 and the front assembly surface 112, the light guide hole 114 axially passes through the front end surface 111 and the front assembly surface 112 opposite to the connecting base 11, the light guide groove 115 is recessed in the front assembly surface 112 of the connecting base 11, the light guide groove 115 is in communication with the light guide hole 114, the front top holding portion 116 and each front side holding portion 117 are recessed around the front holding surface 113 at intervals, in this embodiment, the front top holding portion 116 is recessed in a shape corresponding to the shape of the index finger of the user, and each front side holding portion 117 is shaped corresponding to the shape of the thumb and middle finger of the user, referring to fig. 4, the cross section of the connecting seat 11 is approximately triangular ellipse, which is an ergonomic shape in short, but not limited thereto, the shapes and the arrangement positions of the front top grip portion 116 and the front side grip portion 117 only need to achieve the effect of stable hand holding.

Referring to fig. 2, 3, 5 and 6, the coupling rod 12 is protruded from the front assembly surface 112 of the connecting seat 11, the other end of the coupling rod 12 opposite to the connecting seat 11 is connected to a nickel plate (not shown in the drawings), the nickel plate is deformed by magnetic fields, these phenomena generate ultrasonic vibration frequency more than twenty thousand times through the amplification of the coupling rod 12 and the thin tip 13 (described later), the nickel plate is a standard component in the prior art, the detailed structure of the nickel plate is not repeated, the thin tip 13 includes a base 131 and a curved rod 132, a connecting groove is formed in a concave surface of one end of the base 131, the water outlet 133 penetrates through the base 131 and communicates with the connecting groove, the connecting groove of the base 131 is fixedly disposed in the connecting seat 11, the other end of the curved rod 132 is curved and forms a tip 134, an outer wall surface of the curved rod 132 extends from the position of the water outlet 133 of the base 131 toward the tip 134 to form a water guide channel 135, the base 131 is fixedly disposed on the front end surface 111 of the connecting seat 11, the position of the water outlet 133 is adjacent to the position of the light guide hole 114, the light guide bar 14 is disposed in the light guide hole 114, and the extended line of the imaginary center of the light guide hole 114 is aligned with the position of the tip 134, in other words, the light irradiated by the light guide bar 14 is aligned with the tip 134 of the thin tip 13, and the combination rod 12 is a standard component in the prior art and the detailed structure thereof is not repeated.

Referring to fig. 1 to 3, the handle 20 has a rear assembling surface 21, a combining groove 22, a light source groove 23, a light emitting element 24, an elastic element 25, a rear top holding portion 26 and two rear side holding portions 27, the rear assembling surface 21 is located at one end of the handle 20, the combining groove 22 is concavely disposed on the rear assembling surface 21, the position of the combining groove 22 corresponds to the position of the combining rod 12, the light source groove 23 is concavely disposed on the rear assembling surface 21, one end of the light source groove 23 has a notch and a groove bottom, the inner diameter of the notch is smaller than the inner diameter of the groove bottom, that is, the light source groove 23 is a notch-shaped groove, the position of the notch of the light source groove 23 corresponds to the position of the light guiding bar 14, the light emitting element 24 has a front end 241 and a rear end 242, the front end 241 and the rear end 242 are respectively located at two opposite ends of the light emitting element 24, the peripheral edge of the front end 241 is formed with a chamfer, the outer diameter of the front end 241 is smaller than the inner diameter of the notch of the light source groove 23 and the inner diameter of the light guiding groove 115, the outer diameter of the rear end 242 is larger than the inner diameter of the notch of the light source groove 23, the light emitting element 24 and the elastic element 25 are both disposed in the light source groove 23, one end of the elastic element 25 abuts against the bottom of the light source groove 23, the other end of the elastic element 25 abuts against the rear end 242 of the light emitting element 24, the front end 241 of the light emitting element 24 abuts against the inner wall of the light source groove 23 and is adjacent to the notch of the light source groove 23, the light emitting element 24 can slide in the light source groove 23 along the axial direction of the handle 20, the connecting rod 12 of the head 10 can be selectively inserted into the connecting groove 22, in this embodiment, the light emitting element 24 is an LED lamp set, the elastic element 25 is a spring, the handle 20 is combined by using two pieces of shell and ultrasonic welding, the precise structure to be disposed in the handle 20 can be previously placed, meanwhile, the overall visual inspection can be performed, the welding can be confirmed, and the product quality and effectiveness can be improved, but not limited thereto.

The rear top grip 26 and the rear side grips 27 are respectively recessed around the front grip surface 113 at intervals, in this embodiment, the recessed position and shape of the rear top grip 26 correspond to the position and shape of the index finger after being held by the hand of the user, the position and shape of each rear side grip 27 correspond to the position and shape of the thumb and middle finger after being held by the hand of the user, the cross section of the handle 20 at the positions of the rear top grip 26 and the two rear side grips 27 is approximately triangular oval, in short, the shape is in accordance with ergonomics, but not limited thereto, and the shape and the arrangement position of the rear top grip 26 and the rear side grips 27 only need to achieve the effect of stable hand holding.

Referring to fig. 1 and 2, each anti-slip sleeve 30 is an annular sheet, one anti-slip sleeve 30 of each anti-slip sleeve 30 is fixedly sleeved on the connecting base 11 at a position adjacent to the front top holding portion 116 and each front side holding portion 117, and the other anti-slip sleeve 30 of each anti-slip sleeve 30 is fixedly sleeved on the handle 20 at a position adjacent to the rear top holding portion 26 and each rear side holding portion 27.

The handle tail cover 40 is an annular sheet body, which is sleeved at the other end of the handle 20, in this embodiment, the other end of the handle 20 is connected to a transmission line, which is used to provide a power source for the light emitting element 24 and a water source for the thin pointed end 13, which is a standard component in the prior art, the detailed structure of which is not repeated, the position of the handle tail cover 40 is adjacent to the position where the transmission line is connected to the handle 20, and the handle tail cover 40 is made of metal material, such as stainless steel, but not limited thereto, the arrangement position and material of the handle tail cover 40 can be changed according to the needs of the user, and only the effect of strengthening the structure can be achieved.

In the present invention, please refer to fig. 2, the head 10 can be rotatably mounted on the handle 20 by inserting the connecting rod 12 into the connecting groove 22, the fixing manner is not detailed in the prior art, and as shown in fig. 7, when the head 10 is rotatably mounted on the handle 20, the front end 241 of the illuminating member 24 is pushed by the periphery of the front assembly surface 112 of the connecting seat 11, so that the illuminating member 24 moves toward the bottom of the light source groove 23, and the elastic member 25 is in a compressed state; referring to fig. 8, when the head 10 is rotated to be assembled to the handle 20 (i.e. when the front assembly surface 112 is adjacent to the rear assembly surface 21), since the notch of the light source groove 23 is aligned with the notch of the light guide groove 115, the light emitting member 24 is pushed by the restoring force of the elastic member 25, such that the light emitting member 24 is displaced toward the light guide groove 115 until the front end 241 of the light emitting member 24 is located in the light guide groove 115, i.e. the end of the light emitting member 24 adjacent to the notch of the light source groove 23 abuts against the inner wall surface of the light source groove 23 adjacent to the notch; referring to fig. 8 and 9, after the light emitting member 24 projects light, the light is projected from the light guiding hole 114 of the head 10 on the front end surface 111 through the light guiding strip 14, and the light irradiation range is concentrated at the tip 134 of the curved rod 132, so as to provide better visibility for effective illumination of local key parts, and when the water is sprayed from the water outlet 133, the phenomenon that the visual effect is affected by the water mist can be avoided, and in addition, the light emitting member 24 with the front end 241 extending into the light guiding groove 115 can prevent the light source from overflowing from the gap between the front assembly surface 112 of the head 10 and the rear assembly surface 21 of the handle 20, thereby causing discomfort to the eyes of the user or the patient.

Referring to fig. 2 and 4, in the above process, since the cross section of the connecting seat 11 and the handle 20 at the position where the user holds the handle is in a triangular ellipse shape, the rotation of the utility model can be controlled easily and accurately by the user, and the fineness of the operation requiring fine operation such as subgingival treatment is further improved, and in addition, the arrangement of the front top holding part 116, the front side holding part 117, the rear top holding part 26 and the rear side holding part 27 allows the user to select an appropriate holding mode according to the requirement, so as to achieve the efficacy of conforming to ergonomics.

As shown in fig. 3, in the foregoing process, since the outlet 133 of the thin pointed tip 13 is located on the base 131, compared with the prior art in which the outlet is located on the curved rod, the structural strength of the curved rod 132 can be enhanced, and the water guiding groove 135 on the curved rod 132 can guide the water sprayed from the outlet 133 to the tip 134, which not only can achieve the effect of cooling the thin pointed tip 13, but also can prevent the water from splashing.

Referring to fig. 1, in the above process, the anti-slip sleeve 30 is provided, and the surface of the anti-slip sleeve 30 is provided with the lines, so that the anti-slip effect is achieved.

In the above process, the handle tail cover 40 is provided, so that the damage of the end of the handle 20 adjacent to the transmission line due to frequent winding and pulling can be avoided.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above embodiments, but not to limit the present invention, any person of ordinary skill in the art can make modifications or changes within the scope of the technical solution of the present invention without departing from the scope of the present invention.

Claims

1. A dental handpiece construction, comprising:

2. The dental handpiece structure of claim 1, wherein the handle further comprises a rear top holding portion and two rear side holding portions, the rear top holding portion and each of the rear side holding portions are respectively recessed around the outer wall surface of the handle at intervals, and the cross section of the handle at the positions of the rear top holding portion and each of the rear side holding portions is in the shape of a triangular ellipse.

3. The dental handpiece structure of claim 1 or 2, wherein the slender tip comprises a base and a curved rod, a connecting slot is formed in an inner surface of one end of the base, the water outlet hole penetrates through the base and is communicated with the connecting slot of the base, the connecting slot of the base is assembled on the connecting seat, one end of the curved rod is connected with the base, the tip is located at the other end of the curved rod, and an outer wall surface of the curved rod extends from the position of the water outlet hole of the base to the direction of the tip in a concave mode to form a water guide channel.

4. The dental handpiece construction of claim 3, further comprising a handle tail cover, the handle tail cover being an annular sheet, the handle tail cover being disposed around the other end of the handle.

5. The dental handpiece structure of claim 4, further comprising a plurality of anti-slip sleeves, wherein one of the anti-slip sleeves is fixedly sleeved on the connecting base at a position adjacent to the front top holding portion and the front side holding portions, and the other of the anti-slip sleeves is fixedly sleeved on the handle at a position adjacent to the rear top holding portion and the rear side holding portions.