CN112472328B

CN112472328B - Dental handpiece of clearance is taken in anti-return

Info

Publication number: CN112472328B
Application number: CN202011394367.8A
Authority: CN
Inventors: 杨燕; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Yang Yan
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-12-31
Anticipated expiration: 2040-12-03
Also published as: CN112472328A

Abstract

The invention discloses a dental handpiece with a cleaning function and an anti-backflow function, which comprises a handpiece body, wherein a drill point is arranged in the handpiece body, an exhaust port is arranged between the drill point and the handpiece body, two anti-backflow cleaning devices are arranged in the exhaust port and are symmetrically distributed about the central line of the drill point, the anti-backflow cleaning devices take the gas flow generated by the operation of the handpiece body as power, the anti-backflow cleaning devices comprise an anti-backflow component, a connecting component and a cleaning component, the connecting component is connected with the anti-backflow component and the cleaning component, and the anti-backflow component is positioned above the cleaning component; the anti-backflow assembly comprises an impact part and an adjusting part, the impact part extends into the drill point, the adjusting part is positioned in the air outlet, and the adjusting part is used for adjusting the size of a through hole communicated with the machine body when gas flows back; the dental handpiece is cleaned by utilizing the air flow of the dental handpiece and the backflow problem of the dental handpiece is solved.

Description

Dental handpiece of clearance is taken in anti-return

Technical Field

The invention belongs to the field of medical treatment, and particularly relates to a dental handpiece with a cleaning anti-backflow belt.

Background

The existing dental drill mobile phone has the disadvantage that the phenomenon of resorption is generated, and the phenomenon of resorption is the main reason for iatrogenic cross infection; the pollution source is generated because a doctor must enter the oral cavity of a person when using the high-speed turbine dental drill handpiece to drill and grind teeth, and water is sprayed to cool the drill point during drilling and grinding, so that the handpiece body and part of the front handpiece of the handpiece can touch the teeth, oral mucosa, dental pulp cavity and the like of a patient necessarily and can touch blood sometimes, and the cooling water sprayed to the drill bit and saliva of the patient during treatment can form polluted liquid in the oral cavity of the patient; the phenomenon of suck back causes the pollutants to enter the mobile phone to generate iatrogenic cross infection; the suck-back phenomenon is that when compressed air enters the machine head body from the air inlet to blow the wind wheel to rotate, the cavity of the wind wheel is in a positive air pressure state, no suck-back is generated at the moment, but when a doctor wants to stop the mobile phone, compressed air flow disappears from the air inlet of the machine head body, the wind wheel can continue to rotate for a period of time according to inertia, and because no compressed air is supplied in the air inlet, the rotating wind wheel can suck air from gaps at the upper end and the lower end of the machine head body and exhaust the air to the air inlet and the exhaust port; if the machine head body touches the oral pollution liquid or atomized pollution water drops suspended in the air in the oral cavity or ground tooth fine particles, the liquid can be easily sucked into the wind wheel cavity of the machine head body and flows to the air inlet and outlet, so that parts (such as a wind wheel, a bearing and the like) and air inlet and outlet pipelines in the cavity of the machine head body are polluted, and even the parts can be transmitted to pipelines of a therapeutic machine and related parts of the therapeutic machine; when the doctor treats the next patient, the pollutants adhered in the cavity of the turbine head body and the pollutants in the corresponding pipelines and parts of the therapeutic machine are sprayed into the oral cavity of the next patient along with the compressed air flow and are sucked back to the pipelines and the internal parts of the therapeutic machine, so that iatrogenic cross infection is formed.

Disclosure of Invention

The invention provides a dental handpiece which can be used for cleaning the dental handpiece by using compressed air generated during the operation of the dental handpiece and solving the backflow problem in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a dental handpiece with a cleaning function and an anti-backflow function comprises a handpiece body, wherein a drill point is installed in the handpiece body, an air outlet is formed between the drill point and the handpiece body, two anti-backflow cleaning devices are arranged in the air outlet and symmetrically distributed about the center line of the drill point, the anti-backflow cleaning devices use the gas flow generated by the operation of the handpiece body as power, each anti-backflow cleaning device comprises an anti-backflow component, a connecting component and a cleaning component, the connecting component is connected with the anti-backflow component and the cleaning component, and the anti-backflow component is positioned above the cleaning component; the anti-backflow assembly comprises an impact part and an adjusting part, the impact part extends into the drill point, the adjusting part is located in the air outlet, and the adjusting part is used for adjusting the size of a through hole through which the drill point is communicated with the machine body when gas flows back.

Be provided with first cavity in the organism, first cavity is linked together with the gas vent, first cavity is located the clearance subassembly upside, be provided with first spout in the first cavity, first spout is linked together with first cavity, coupling assembling is including sliding the first slider that sets up in first spout, be connected with first spring between the bottom of first slider and first spout, first slider is connected with first stay cord with first spring coupling's terminal surface center department, first stay cord one end is connected the other end and is connected on first slider the clearance subassembly, first stay cord realizes turning to through the three pivot part that sets up in first cavity.

The rotating shaft component comprises a first rotating shaft fixedly arranged in a first cavity, a first roller is sleeved on the first rotating shaft in a rotating mode, and the first roller is in contact with the first spring.

Be provided with the second spout in the organism, the second spout is located the downside of first cavity, the clearance subassembly is including sliding the second slider that sets up in the second spout, be connected with the second spring between second slider and the second spout bottom, first stay cord one end is connected the other end and is connected the second slider on first slider, the second slider is towards the terminal surface fixedly connected with second pivot of drill point, the second pivot is rotated the cover through the apron and is equipped with the flabellum, fixedly connected with apron on the first slider, the one end fixedly connected with brush of second pivot is kept away from to the flabellum.

The backflow prevention assembly comprises a third rotating shaft rotatably arranged on the first sliding block, a first limiting block is fixedly arranged on the first sliding block, the first limiting block and the third rotating shaft are positioned on the same end face of the first sliding block, the first limiting block is in a semicircular shape and is attached to the third rotating shaft, an adjusting plate is fixedly arranged on the third rotating shaft, and the semicircular constraint of the first limiting block enables the third rotating shaft to drive the upward and downward rotation of the adjusting plate to be limited within an angle range; the impact member and the adjustment member are located within the adjustment plate.

A third sliding groove is formed in the adjusting plate, the left end of the adjusting plate extends into the drill point in an initial state, the impact part comprises a third sliding block which is arranged inside the upper end of the third sliding groove in a sliding mode, a third spring is connected between the third sliding block and the bottom of the third sliding groove, a rack is fixedly connected to the right portion of the lower end face of the third sliding block, a fourth rotating shaft is arranged in the third sliding groove in a rotating mode and located on the right lower portion of the third sliding block, a first gear is fixedly sleeved on the fourth rotating shaft, and the first gear is meshed with the rack; and a second pull rope is connected to the fourth rotating shaft, one end of the second pull rope is wound on the fourth rotating shaft, and the other end of the second pull rope is connected with the adjusting component.

The adjusting part is composed of adjusting components with the same number as the vent holes, and each adjusting component is positioned on the right side of the central line of the corresponding vent hole; the adjusting plate is provided with a fourth sliding groove, the fourth sliding groove is communicated with the air vent, the adjusting component comprises an adjusting slide block which is arranged in the fourth sliding groove in a sliding mode, an adjusting spring is connected between the bottom of the adjusting slide block and the bottom of the fourth sliding groove, the left end of the adjusting slide block is connected with a third pull rope, the left end of the adjusting slide block is connected with the second pull rope, and the right end of the adjusting slide block is connected with the third pull rope of the next adjusting component.

In summary, the invention has the following advantages: the invention can effectively solve the problem of dental handpiece backflow, and utilizes the air flow of the dental handpiece to clean the dental handpiece and adjust the cross section of the through hole.

Drawings

FIG. 1 is an internal structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of FIG. 2 at B;

FIG. 4 is an enlarged view of a portion of FIG. 2 at C;

FIG. 5 is an enlarged view of a portion of FIG. 4 at D;

fig. 6 is a partially enlarged view of fig. 4 at E.

In the figure, a machine body 10, a drill point 11, an exhaust port 12, a first cavity 13, a second chute 14, a first chute 15, a first slide block 16, a first spring 17, a third rotating shaft 18, a first limit block 19, an adjusting plate 20, a first pull rope 21, a second spring 22, a first rotating shaft 23, a first roller 24, a second slide block 25, a second rotating shaft 26, a cover plate 27, fan blades 29, a brush 30, a vent hole 31, a third chute 35, a third slide block 36, a third spring 37, a rack 38, a fourth rotating shaft 39, a first gear 40, a second pull rope 41, a fourth chute 45, a third pull rope 46, an adjusting slide block 47 and an adjusting spring 48.

Detailed Description

In the description of the present invention, it is to be understood that the terms etc. indicate orientations or positional relationships based on those shown in the drawings, which are for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, a dental handpiece with a backflow prevention function comprises a handpiece body 10, a drill point 11 is installed in the handpiece body 10, an exhaust port 12 is arranged between the drill point 11 and the handpiece body 10, two backflow prevention cleaning devices are arranged in the exhaust port 12 and are symmetrically distributed about the center line of the drill point 11, the backflow prevention cleaning devices take the gas flow generated by the operation of the handpiece body 10 as power, each backflow prevention cleaning device comprises a backflow prevention assembly, a connecting assembly and a cleaning assembly, the connecting assembly is connected with the backflow prevention assembly and the cleaning assembly, and the backflow prevention assembly is positioned above the cleaning assembly; the anti-backflow assembly comprises an impact part and an adjusting part, the impact part extends into the drill point 11, the adjusting part is located in the exhaust port 12, and the adjusting part is used for adjusting the size of a through hole formed by the drill point 11 and the machine body 10 when gas flows back.

Be provided with first cavity 13 in the organism 10, first cavity 13 is linked together with gas vent 12, first cavity 13 is located the clearance subassembly upside, be provided with first spout 15 in the first cavity 13, first spout 15 is linked together with first cavity 13, coupling assembling is including the first slider 16 of slip setting in first spout 15, be connected with first spring 17 between the bottom of first slider 16 and first spout 15, the terminal surface center department that first slider 16 and first spring 17 are connected is connected with first stay cord 21, clearance subassembly is connected to the other end on first slider 16 to first stay cord 21 one end connection, first stay cord 21 realizes turning to through the three pivot part that sets up in first cavity 13. The first slider 16 is pulled by the first pull cord 21, the first slider 16 slides along the first slide groove 15, and the first spring 17 is compressed.

The rotating shaft component comprises a first rotating shaft 23 fixedly arranged in the first cavity 13, a first roller 24 is rotatably sleeved on the first rotating shaft 23, and the first roller 24 is in contact with the first spring 17.

Be provided with second spout 14 in the organism 10, second spout 14 is located the downside of first cavity 13, the clearance subassembly is including the second slider 25 that slides the setting in second spout 14, be connected with second spring 22 between second slider 25 and the 14 bottoms of second spout, second slider 25 is connected to the other end on first slider 16 to first stay cord 21 one end, second slider 25 is towards the terminal surface fixedly connected with second pivot 26 of drill point 11, second pivot 26 rotates the cover through apron 27 and is equipped with flabellum 29, fixedly connected with apron 27 on the first slider 16, the one end fixedly connected with brush 30 of second pivot 26 is kept away from to flabellum 29. The air flowing in the exhaust port 12 blows the fan blade 29, so that the fan blade 29 starts to rotate around the second rotating shaft 26, the brush 30 is driven to rotate around the second rotating shaft 26, the fan blade 29 and the second rotating shaft 26 are blown by the air, the fan blade 29 and the second rotating shaft 26 move downwards while the fan blade 29 rotates, the second sliding block 25 is driven to slide along the second sliding chute 14, the second spring 22 is compressed, the brush 30 rotates simultaneously in the downward movement process, and the brush 30 cleans the inner wall of the exhaust port 12 and the backflow prevention assembly which are contacted on the path; while the sliding of the second slider 25 along the second chute 14 pulls the first pull cord 21.

The backflow prevention assembly comprises a third rotating shaft 18 rotatably arranged on the first sliding block 16, a first limiting block 19 is fixedly arranged on the first sliding block 16, the first limiting block 19 and the third rotating shaft 18 are positioned on the same end face of the first sliding block 16, the first limiting block 19 is semicircular and is attached to the third rotating shaft 18, an adjusting plate 20 is fixed on the third rotating shaft 18, and the third rotating shaft 18 drives the adjusting plate 20 to rotate upwards and downwards within a range of 5 degrees due to semicircular constraint of the first limiting block 19; the impact member and the adjustment member are located within the adjustment plate 20. The movement of first slider 16 drives the removal of third pivot 18 and first stopper 19 to drive the removal of regulating plate 20, when the gas backward flow, when regulating plate 20 received ascending power, regulating plate 20 upwards rotates at 5 within ranges, and when regulating plate 20 received decurrent power, regulating plate 20 rotated round third pivot 18, because first stopper 19 is spacing, regulating plate 20 downwards rotates at 5 within ranges.

A third sliding groove 35 is formed in the adjusting plate 20, the left end of the adjusting plate 20 extends into the drill point 11 in an initial state, the impact component comprises a third sliding block 36 arranged in the upper end of the third sliding groove 35 in a sliding manner, a third spring 37 is connected between the third sliding block 36 and the bottom of the third sliding groove 35, a rack 38 is fixedly connected to the right part of the lower end face of the third sliding block 36, a fourth rotating shaft 39 is rotatably arranged in the third sliding groove 35, the fourth rotating shaft 39 is located at the lower right side of the third sliding block 36, a first gear 40 is fixedly sleeved on the fourth rotating shaft 39, and the first gear 40 is meshed with the rack 38; the fourth rotating shaft 39 is connected with a second pull rope 41, one end of the second pull rope 41 is wound on the fourth rotating shaft 39, and the other end is connected with the adjusting component. When the adjusting plate 20 rotates upwards, the third slider 36 is driven to rotate upwards, so that the third slider 36 contacts with the inner wall of the drill point 11, and then the third slider 36 receives the reaction force of the inner wall of the drill point 11, so that the third slider 36 slides along the third sliding chute 35, and the third spring 37 is compressed; the third sliding block 36 slides along the third sliding slot 35 to drive the rack 38 to slide along the third sliding slot 35, so that the rack 38 drives the first gear 40 to rotate, thereby driving the fourth rotating shaft 39 to rotate, and the fourth rotating shaft 39 pulls the second pulling rope 41.

The adjusting plate 20 is provided with a plurality of vent holes 31, the vent holes 31 penetrate through the adjusting plate 20, the vent holes 31 are wide at the top and narrow at the bottom, the adjusting part is composed of adjusting members with the same number as the vent holes 31, and each adjusting member is positioned on the right side of the center line of the corresponding vent hole 31; a fourth chute 45 is arranged in the adjusting plate 20, the fourth chute 45 is communicated with the vent hole 31, the adjusting member comprises an adjusting slide block 47 which is arranged in the fourth chute 45 in a sliding manner, an adjusting spring 48 is connected between the bottom of the adjusting slide block 47 and the bottom of the fourth chute 45, a third pull rope 46 is connected to the left end of the adjusting slide block 47, for a first adjusting member connected with the impact part, the left end of the adjusting slide block 47 is connected with the second pull rope 41, and the right end of the adjusting slide block 47 is connected with the third pull rope 46 of a next adjusting member. The second pulling rope 41 pulls the adjusting slider 47, so that the adjusting slider 47 slides along the fourth sliding chute 45 and slowly enters the vent hole 31, and meanwhile, the movement of the adjusting slider 47 pulls the third pulling rope 46 of the adjacent adjusting component, so that the cross section of the vent hole 31 allowing the gas to circulate is smaller and smaller, and backflow is avoided.

The working principle is as follows: when the switch of the dental handpiece is turned on, the dental handpiece starts to work, compressed air flows in the exhaust port 12, the flowing air in the exhaust port 12 blows the fan blades 29, so that the fan blades 29 start to rotate around the second rotating shaft 26, the brush 30 is driven to rotate around the second rotating shaft 26, and the fan blades 29 and the second rotating shaft 26 are blown by the air, so that the fan blades 29 and the second rotating shaft 26 move downwards while the fan blades 29 rotate, the second sliding block 25 is driven to slide along the second sliding groove 14, the second spring 22 is compressed, the brush 30 rotates simultaneously in the downward movement process, and the brush 30 cleans the inner wall of the exhaust port 12 and the surface of the adjusting plate 20 which are contacted on the path; the movement of the second rotating shaft 26 drives the second slider 25 to slide along the second sliding slot 14, so as to pull the first pulling rope 21, the first pulling rope 21 pulls the first slider 16, the first slider 16 slides along the first sliding slot 15, and the first spring 17 is compressed.

The movement of the first slider 16 drives the third rotating shaft 18 and the first stopper 19 to move, so as to drive the adjusting plate 20 to move, so that when the dental handpiece works, the adjusting plate 20 slowly moves from the exhaust port 12 to the first chute 15 and is kept in the first chute 15;

when the dental handpiece switch is turned off and air flows back, the fan blades 29 and the second rotating shaft 26 are forced upwards, the second spring 22 is reset, the fan blades 29 and the second rotating shaft 26 are further reset to the initial positions, the first spring 17 is reset, the adjusting plate 20 is enabled to return to the initial position, the left end of the adjusting plate extends into the drill point 11, meanwhile, the adjusting plate 20 is enabled to rotate upwards due to the fact that the adjusting plate 20 is forced upwards, the third sliding block 36 is driven to rotate upwards, the third sliding block 36 is enabled to be in contact with the inner wall of the drill point 11, then the third sliding block 36 receives the reaction force of the inner wall of the drill point 11, the third sliding block 36 slides along the third sliding groove 35, and the third spring 37 is compressed;

the third sliding block 36 slides along the third sliding groove 35 to drive the rack 38 to slide along the third sliding groove 35, so that the rack 38 drives the first gear 40 to rotate, thereby driving the fourth rotating shaft 39 to rotate, so that the fourth rotating shaft 39 pulls the second pulling rope 41, the second pulling rope 41 pulls the adjusting sliding block 47, so that the adjusting sliding block 47 slides along the fourth sliding groove 45 to slowly enter the vent hole 31, meanwhile, the movement of the adjusting sliding block 47 pulls the third pulling rope 46 of the adjacent adjusting member, so that the cross section of the vent hole 31 allowing gas to circulate is smaller and smaller, and backflow is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dental handpiece of clearance is taken in anti-return, includes organism (10), install drill point (11) in organism (10), be provided with gas vent (12), its characterized in that between drill point (11) and organism (10): two anti-backflow cleaning devices are arranged in the exhaust port (12), the two anti-backflow cleaning devices are symmetrically distributed about the center line of the drill point (11), the anti-backflow cleaning devices take gas flow generated by the operation of the machine body (10) as power, each anti-backflow cleaning device comprises an anti-backflow assembly, a connecting assembly and a cleaning assembly, the connecting assembly is connected with the anti-backflow assembly and the cleaning assembly, and the anti-backflow assembly is located above the cleaning assembly; the anti-backflow assembly comprises a collision component and an adjusting component, the collision component extends into the drill point (11), the adjusting component is located in the exhaust port (12), the adjusting component is used for adjusting the size of a through hole formed by the drill point (11) and the machine body (10) in a gas backflow process, a first cavity (13) is arranged in the machine body (10), the first cavity (13) is communicated with the exhaust port (12), the first cavity (13) is located on the upper side of the cleaning assembly, a first sliding chute (15) is arranged in the first cavity (13), the first sliding chute (15) is communicated with the first cavity (13), the connecting assembly comprises a first sliding block (16) arranged in the first sliding chute (15) in a sliding mode, a first spring (17) is connected between the first sliding block (16) and the bottom of the first sliding chute (15), and a first pull rope (21) is connected to the center of the end face of the first sliding block (16) connected with the first spring (17), one end of the first pull rope (21) is connected to the first sliding block (16) and the other end of the first pull rope is connected with the cleaning assembly, the first pull rope (21) realizes steering through three rotating shaft components arranged in the first cavity (13), a second sliding groove (14) is arranged in the machine body (10), the second sliding groove (14) is positioned at the lower side of the first cavity (13), the cleaning assembly comprises a second sliding block (25) which is arranged in the second sliding groove (14) in a sliding manner, a second spring (22) is connected between the second sliding block (25) and the bottom of the second sliding groove (14), one end of the first pull rope (21) is connected to the first sliding block (16) and the other end of the first pull rope is connected with the second sliding block (25), a second rotating shaft (26) is fixedly connected to the end face, facing the drill needle (11), of the second rotating shaft (26) is rotatably sleeved with fan blades (29) through a cover plate (27), the first sliding block (16) is fixedly connected with a cover plate (27), and one end, far away from the second rotating shaft (26), of the fan blade (29) is fixedly connected with a brush (30).

2. A dental handpiece with a back flow prevention strip cleaning function as claimed in claim 1, wherein: the rotating shaft component comprises a first rotating shaft (23) fixedly arranged in the first cavity (13), a first roller (24) is sleeved on the first rotating shaft (23) in a rotating mode, and the first roller (24) is in contact with the first spring (17).

3. A dental handpiece with a back flow prevention strip cleaning function as claimed in claim 1, wherein: the backflow prevention assembly comprises a third rotating shaft (18) which is rotatably arranged on a first sliding block (16), a first limiting block (19) is fixedly arranged on the first sliding block (16), the first limiting block (19) and the third rotating shaft (18) are located on the same end face of the first sliding block (16), the first limiting block (19) is semicircular and is attached to the third rotating shaft (18), an adjusting plate (20) is fixedly arranged on the third rotating shaft (18), and the impact part and the adjusting part are located in the adjusting plate (20).

4. A dental handpiece with backflow prevention band cleaning according to claim 3, characterized in that: a third sliding groove (35) is formed in the adjusting plate (20), the left end of the adjusting plate (20) extends into the drill point (11) in an initial state, the striking component comprises a third sliding block (36) which is arranged inside the upper end of the third sliding groove (35) in a sliding manner, a third spring (37) is connected between the third sliding block (36) and the bottom of the third sliding groove (35), a rack (38) is fixedly connected to the right part of the lower end face of the third sliding block (36), a fourth rotating shaft (39) is rotationally arranged in the third sliding groove (35), the fourth rotating shaft (39) is positioned on the lower right side of the third sliding block (36), a first gear (40) is fixedly sleeved on the fourth rotating shaft (39), and the first gear (40) is meshed with the rack (38); and a second pull rope (41) is connected to the fourth rotating shaft (39), one end of the second pull rope (41) is wound on the fourth rotating shaft (39), and the other end of the second pull rope (41) is connected with an adjusting component.

5. A dental handpiece with backflow prevention band cleaning according to claim 4, characterized in that: the adjusting plate (20) is provided with a plurality of vent holes (31), the vent holes (31) penetrate through the adjusting plate (20), the vent holes (31) are wide at the top and narrow at the bottom, the adjusting part is composed of adjusting members with the same number as the vent holes (31), and each adjusting member is positioned on the right side of the center line of the corresponding vent hole (31); be provided with fourth spout (45) in regulating plate (20), fourth spout (45) with air vent (31) are linked together, adjusting member is including sliding adjusting block (47) of setting in fourth spout (45), adjusting block (47) with be connected with between fourth spout (45) the bottom adjusting spring (48), adjusting block's (47) left end is connected with third stay cord (46), and to the first adjusting member of being connected with striking part, adjusting block (47) left end is connected second stay cord (41), and adjusting block (47) right-hand member connects third stay cord (46) of next adjusting member.