Machine body assembly of dental scaler and dental scaler

Abstract

The utility model discloses a machine body subassembly and dental scaler of dental scaler, wherein machine body subassembly includes: handle, casing, first rotator and second rotator, handle is provided with base and boss, and is seted up with first installation hole, and casing is seted up with second installation hole and third installation hole, and the boss is inserted in the second installation hole, and the end of casing is arranged in the first shoulder, and the head is inserted in the second installation hole, and the pivot part is inserted in the first installation hole, and the second rotator is inserted in the third installation hole, and the driving gear part is engaged with the driven gear part to make the rotation of first rotator convert into the rotation of second rotator, and then drive dental scaler to rotate, wherein the head of first rotator is clearance fit with the second installation hole, and the second shoulder of first rotator is abutted with the end face of boss, and the pivot part is clearance fit with the first installation hole, can effectively improve the installation stability and rotation accuracy of first rotator, and then reduce the noise of dental scaler when operating.

Description

Technical Field

[0001] This utility model relates to the field of dental floss technology, and more particularly to a dental floss device body component and a dental floss device. Background Technology

[0002] Using a dental polisher to clean and polish the tooth surface can effectively prevent and treat dental diseases. It mainly consists of two parts: a tooth-protecting bend and a high-speed rotary actuator. The tooth-protecting bend includes a housing, a polishing component, and a rotating component. The high-speed rotary actuator drives the rotating component to rotate, and the transmission structure between the rotating component and the polishing component drives the polishing component to rotate. The rotating polishing component contacts the tooth surface to achieve the effect of cleaning and polishing teeth. However, the existing tooth-protecting bends of dental polishing machines generally have the problem of high noise during operation. Referring to the tooth-protecting bend structure of the polishing machine in Chinese Patent CN202120810065.8, the drive shaft assembly 31 of the drive component 3 only uses a stabilizing plate 313 to assemble and fix the rotating shaft 311 and the active bevel gear 312 in the through hole of the middle part 12 of the outer shell 1. The rotating shaft 311 and the active bevel gear 312 are prone to displacement when rotating, and their installation stability and rotation accuracy are low. This results in poor transmission smoothness between the active bevel gear 312 and the driven bevel gear 211 of the driven shaft assembly 21, and high noise when the active bevel gear 312 and the driven bevel gear 211 rotate. Utility Model Content

[0003] The purpose of this invention is to provide a body assembly for a dental flosser, wherein the first rotating body has high installation stability and rotational precision, which is beneficial to improving the smoothness of the transmission between the first rotating body and the second rotating body, thereby reducing the noise of the dental flosser body assembly during operation.

[0004] Another objective of this invention is to provide a dental flosser in which the first rotating body has high installation stability and rotational precision, which helps to improve the smoothness of the transmission between the first rotating body and the second rotating body, thereby reducing the noise of the dental flosser during operation.

[0005] To achieve the above objectives, this utility model discloses a body assembly for a dental flosser, comprising: Handle, housing, first rotating body and second rotating body, The handle includes a first part and a second part along its length. The first part has a mounting groove. The second part includes a base connected to the first part and a boss extending upward from the middle of the end of the base away from the first part. A first shoulder is formed between the boss and the base. The second part has a first mounting hole extending along the length of the handle and penetrating the base and the boss. One end of the first mounting hole communicates with the mounting groove. The housing has a second mounting hole and a third mounting hole that extend outward in different directions and are interconnected. The boss is adapted to be inserted into the end of the second mounting hole away from the third mounting hole. The end of the housing that defines the side wall of the second mounting hole is provided at the first shoulder. The first rotating body includes a rotating shaft and a head. The rotating shaft extends from the middle of one end of the head. A second shoulder is formed between the head and the rotating shaft. A drive gear is formed at the end of the head away from the rotating shaft. The head is inserted into the end of the second mounting hole near the third mounting hole and is clearance-fitted with the second mounting hole. The end face of the second shoulder abuts against the end face of the boss. The rotating shaft passes through the first mounting hole and the mounting groove and is clearance-fitted with the first mounting hole. The second rotating body includes a driven gear portion, which passes through the third mounting hole. The driven gear portion meshes with the driving gear portion to convert the rotation of the first rotating body in the first direction into the rotation of the second rotating body in the second direction. One end of the second rotating body is used to connect to a dental cleaning component to drive the dental cleaning component to rotate.

[0006] Preferably, the axial dimension of the first mounting hole is larger than the axial dimension of the head.

[0007] Preferably, the end of the sidewall defining the second mounting hole of the housing is fixedly connected to the base by seam welding.

[0008] Preferably, the rotating shaft includes a first column and a second column, one end of the first column is connected to the end of the head away from the drive gear, and the other end is connected to the second column, wherein the radial dimension of the second column is smaller than the radial dimension of the first column.

[0009] Preferably, the first part includes a gripping portion connected to the base, wherein the end of the gripping portion away from the base is provided with the mounting groove, and the radial dimension of the end is greater than the radial dimension of the base, and the outer sidewall of the end of the gripping portion connected to the base forms a transitional tapered surface.

[0010] Preferably, the housing includes a first connecting portion extending in a first direction and a second connecting portion extending in a second direction. The first connecting portion has a second mounting hole having a first central axis, and the second connecting portion has a third mounting hole having a second central axis. The included angle between the first central axis and the second central axis is 90 degrees.

[0011] Preferably, the second rotating body includes a cover portion, a support portion, a shaft portion, and a seat portion connected sequentially along its length. The support portion passes through the third mounting hole at one end away from the second mounting hole and is clearance-fitted with the third mounting hole. The seat portion passes through the third mounting hole at one end near the second mounting hole. The radial dimension of the shaft portion is smaller than the radial dimensions of the support portion and the seat portion, so that its outer side wall forms an annular groove corresponding to the second mounting hole. The driven gear portion includes a plurality of driven teeth spaced around the shaft portion and spaced at the end face of the seat portion defining the annular groove. The cover portion is arranged outside the second mounting hole and its radial dimension is larger than the radial dimension of the support portion, so as to cover the outward opening of the second mounting hole. The end face of the cover portion opposite to the support portion is provided with a mounting shaft that is fixedly connected to the dental cleaning component.

[0012] Preferably, a rotation limiting hole is formed inwardly at the middle of the bottom wall of the third mounting hole, and a rotation support shaft is formed outwardly at the middle of the end of the second rotating body away from the dental cleaning component. The rotation support shaft passes through the rotation limiting hole and is clearance-fitted with the rotation limiting hole, and the end face of the rotation support shaft abuts against the bottom wall of the rotation limiting hole. Preferably, a rotation limiting hole is formed inward at the middle of the end of the second rotating body away from the dental cleaning component, and a rotation support shaft is formed outward at the middle of the bottom wall of the third mounting hole. The rotation support shaft is inserted into the rotation limiting hole and is clearance-fitted with the rotation limiting hole, and the end face of the rotation support shaft abuts against the bottom wall of the rotation limiting hole.

[0013] To achieve the aforementioned other objective, this utility model discloses a dental flosser, comprising: The body components of the aforementioned dental flosser; A dental cleaning component, wherein the dental cleaning component is connected to the second rotating body; A drive assembly is connected to the rotating shaft and is used to drive the first rotating body to rotate in a first direction.

[0014] Compared with the prior art, the handle of this utility model is provided with a base and a boss extending upward from the base, and a first mounting hole is provided along its length. The housing is provided with a second mounting hole and a third mounting hole that extend outward in different directions and are interconnected. The boss is inserted into the second mounting hole. The end of the housing is provided with a first shoulder formed between the boss and the base. The head of the first rotating body is inserted into the second mounting hole. The shaft of the first rotating body passes through the first mounting hole. The second rotating body passes through the third mounting hole. The driving gear of the first rotating body meshes with the driven gear of the second rotating body, so that the rotation of the first rotating body is converted into the rotation of the second rotating body, thereby driving the dental cleaning component connected to the second rotating body to rotate. The head of the first rotating body is in clearance fit with the second mounting hole. The second shoulder formed between the head of the first rotating body and the shaft abuts against the end face of the boss. The shaft is in clearance fit with the first mounting hole. This can effectively improve the installation stability and rotation accuracy of the first rotating body, and help improve the smoothness of the transmission between the first and second rotating bodies, thereby reducing the noise of the dental cleaning device's body components during operation. Attached Figure Description

[0015] Figure 1 This is a perspective structural diagram of the first embodiment of the body assembly of the dental flosser of this utility model.

[0016] Figure 2 This is an exploded structural diagram of the first embodiment of the body assembly of the dental flosser of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the body assembly of the dental flosser of this utility model.

[0018] Figure 4 This is an exploded structural diagram of the second embodiment of the body assembly of the dental flosser of this utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of the body assembly of the dental flosser of this utility model. Detailed Implementation

[0020] To explain in detail the technical content, structural features, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0021] Please see Figures 1 to 5 This utility model discloses a body assembly for a dental flosser, which includes: Handle 1, housing 2, first rotating body 3, and second rotating body 4. The handle 1 includes a first part 11 and a second part 12 along its length. The first part 11 has a mounting groove 13. The second part 12 includes a base 14 connected to the first part 11 and a boss 15 extending upward from the middle of the end of the base 14 away from the first part 11. A first shoulder 16 is formed between the boss 15 and the base 14. The second part 12 has a first mounting hole 17 extending along the length of the handle 1 and penetrating the base 14 and the boss 15. One end of the first mounting hole 17 communicates with the mounting groove 13. The housing 2 has a second mounting hole 21 and a third mounting hole 22 that extend outward in different directions and are interconnected. The boss 15 is adapted to be inserted into the end of the second mounting hole 21 away from the third mounting hole 22. The end of the side wall of the housing 2 that defines the second mounting hole 21 is provided in the first shoulder 16. The first rotating body 3 includes a rotating shaft portion 31 and a head portion 32. The rotating shaft portion 31 extends from the middle of one end of the head portion 32. A second shoulder portion 30 is formed between the head portion 32 and the rotating shaft portion 31. A drive gear portion 33 is formed at the end of the head portion 32 away from the rotating shaft portion 31. The head portion 32 is inserted into the end of the second mounting hole 21 near the third mounting hole 22 and is clearance-fitted with the second mounting hole 21. The second shoulder portion 30 abuts against the end face of the boss 15. The rotating shaft portion 31 passes through the first mounting hole 17 and the mounting groove 13 and is clearance-fitted with the first mounting hole 17. The second rotating body 4 includes a driven gear part 41. The second rotating body 4 passes through the third mounting hole 22. The driven gear part 41 meshes with the driving gear part 33 to convert the rotation of the first rotating body 3 in the first direction A into the rotation of the second rotating body 4 in the second direction B. One end of the second rotating body 4 is used to connect to the dental cleaning component 5 to drive the dental cleaning component 5 to rotate.

[0022] Compared with the prior art, the handle 1 of this utility model is provided with a base 14 and a boss 15 extending upward from the base 14, and a first mounting hole 17 is provided along its length. The housing 2 is provided with a second mounting hole 21 and a third mounting hole 22 that extend outward in different directions and are interconnected. The boss 15 is inserted into the second mounting hole 21. The end of the housing 2 is provided with a first shoulder 16 formed between the boss 15 and the base 14. The head 32 of the first rotating body 3 is inserted into the second mounting hole 21. The rotating shaft 31 of the first rotating body 3 passes through the first mounting hole 17. The second rotating body 4 passes through the third mounting hole 22. The drive gear 3 of the first rotating body 3... The first rotating body 3 meshes with the driven gear 41 of the second rotating body 4, so that the rotation of the first rotating body 3 is converted into the rotation of the second rotating body 4, thereby driving the dental cleaning component 5 connected to the second rotating body 4 to rotate. The head 32 of the first rotating body 3 is clearance-fitted with the second mounting hole 21, the second shoulder 30 formed between the head 32 of the first rotating body 3 and the rotating shaft 31 abuts against the end face of the boss 15, and the rotating shaft 31 is clearance-fitted with the first mounting hole 17. This can effectively improve the installation stability and rotation accuracy of the first rotating body 3, and help improve the smoothness of the transmission between the first rotating body 3 and the second rotating body 4, thereby reducing the noise of the dental cleaning device's body components during operation.

[0023] See Figures 1 to 5 The axial dimension of the first mounting hole 17 is larger than that of the head 32, which helps to further improve the installation stability and rotation accuracy of the first rotating body 3.

[0024] See Figures 1 to 5 The end of the side wall of the housing 2 that defines the second mounting hole 21 is fixedly connected to the base 14 by seam welding, which is beneficial to the stable connection between the housing 2 and the handle 1.

[0025] See Figures 1 to 5 The rotating shaft 31 includes a first column 311 and a second column 312. One end of the first column 311 is connected to the end of the head 32 away from the drive gear 33, and the other end is connected to the second column 312. The radial dimension of the second column 312 is smaller than that of the first column 311, so that the rotating shaft 31 can be quickly inserted into the first mounting hole 17.

[0026] Furthermore, a tapered transition surface 313 is formed at the connection between the first column portion 311 and the second column portion 312 to facilitate the transition and guidance from the second column portion 312 to the first column portion 311 when the rotating shaft portion 31 is inserted into the first mounting hole 17.

[0027] See Figures 1 to 5The first part 11 includes a gripping part 111 connected to the base 14. The end of the gripping part 111 away from the base 14 is provided with a mounting groove 13, and the radial dimension of this end is greater than the radial dimension of the base 14. The outer side wall of the end of the gripping part 111 connected to the base 14 is formed with a transitional conical surface 112.

[0028] Specifically, in this embodiment, the gripping part 111, the base 14, and the boss 15 are an integral structure, but not limited to this. In some embodiments, the gripping part 111, the base 14, and the boss 15 can also be independent parts connected together by other means, including but not limited to mechanical fasteners, structural threads, adhesives, and ultrasonic welding.

[0029] See Figures 1 to 5 In this embodiment, the housing 2 includes a first connecting portion 23 extending along a first direction and a second connecting portion 24 extending along a second direction. The first connecting portion 23 has a second mounting hole 21 with a first central axis 201, and the second connecting portion 24 has a third mounting hole 22 with a second central axis 202. The included angle between the first central axis 201 and the second central axis 202 is 90 degrees, which is beneficial for the driving gear portion 33 and the driven gear portion 41 to form a tight fit, thereby improving the smoothness of the transmission fit between the second rotating body 4 and the first rotating body 3. However, it is not limited to this. In some embodiments, the included angle between the first central axis 201 and the second central axis 202 can be between 90 degrees and 100 degrees.

[0030] Specifically, in this embodiment, the first mounting hole 17 has a third central axis 101, and the rotation axis of the first rotating body 3 is coaxially arranged with the first central axis 201 and the third central axis 101.

[0031] See Figures 1 to 5In this embodiment, the second rotating body 4 includes a cover portion 42, a support portion 43, a shaft portion 44, and a seat portion 45 connected sequentially along its length. The support portion 43 passes through the end of the third mounting hole 22 away from the second mounting hole 21 and is clearance-fitted with the third mounting hole 22. The seat portion 45 passes through the end of the third mounting hole 22 near the second mounting hole 21. The radial dimension of the shaft portion 44 is smaller than the radial dimensions of the support portion 43 and the seat portion 45, so that its outer side wall forms an annular groove 441 corresponding to the second mounting hole 21. The driven gear portion 4... 1 includes a plurality of driven teeth 411 spaced around the shaft portion 44 and spaced around the end face of the seat portion 45 defining the annular groove 441. The cover portion 42 is arranged outside the second mounting hole 21 and has a radial dimension larger than the radial dimension of the support portion 43 to cover the outward opening of the second mounting hole 21. The end face of the cover portion 42 away from the support portion 43 is provided with a mounting shaft 46 fixedly connected to the dental cleaning component 5. However, it is not limited to this. In some embodiments, the plurality of driven teeth 411 may also be spaced around the shaft portion 44 and spaced around the end face of the support portion 43 defining the annular groove 441.

[0032] The clearance fit between the support part 43 and the third mounting hole 22 helps to improve the installation stability and rotation accuracy of the second rotating body 4, and helps to improve the smoothness of the transmission between the first rotating body 3 and the second rotating body 4, thereby reducing the noise of the body components of the dental scaler during operation.

[0033] Specifically, in this embodiment, a plurality of active teeth 331 are arranged circumferentially at the edge of the head 32 of the first rotating body 3 away from the rotating shaft 31. The end of the head 32 away from the rotating shaft 31 extends into the annular groove 441 through the second mounting hole 21 so that the active teeth 331 mesh with the driven teeth 411.

[0034] Furthermore, in the first embodiment, a rotation limiting hole 100 is formed inward at the middle of the bottom wall of the third mounting hole 22, and a rotation support shaft 200 is formed outward at the middle of the end of the second rotating body 4 away from the dental cleaning component 5. The rotation support shaft 200 passes through the rotation limiting hole 100 and is clearance-fitted with the rotation limiting hole 100. The end face of the rotation support shaft 200 abuts against the bottom wall of the rotation limiting hole 100. Furthermore, in the second embodiment, a rotation limiting hole 100 is formed inward at the middle of the end of the second rotating body 4 away from the dental cleaning component 5, and a rotation support shaft 200 is formed outward at the middle of the bottom wall of the third mounting hole 22. The rotation support shaft 200 is inserted into the rotation limiting hole 100 and is clearance-fitted with the rotation limiting hole 100. The end face of the rotation support shaft 200 abuts against the bottom wall of the rotation limiting hole 100.

[0035] Specifically, in the first embodiment, the rotation limiting hole 100 is a blind hole formed on the bottom wall of the third mounting hole 22, and the rotation support shaft 200 is formed on the end of the seat portion 45 away from the shaft portion 44. In the second embodiment, the rotation limiting hole 100 is a blind hole formed on the end of the seat portion 45 away from the shaft portion 44, and the rotation support shaft is formed on the bottom wall of the third mounting hole 22. The rotation support shaft 200 and the rotation limiting hole 100 are coaxially arranged with the second central axis 202, and the rotation support shaft 200 and the rotation limiting hole 100 are clearance-fitted. The end face of the rotation support shaft 200 abuts against the bottom wall of the rotation limiting hole 100. The support portion 43 is clearance-fitted with the third mounting hole 22, which effectively improves the stability of the second rotating body 4 installed in the third mounting hole 22, improves the smoothness of the transmission between the second rotating body 4 and the first rotating body 3, and reduces the noise of the body components of the dental scaler during operation.

[0036] Please see Figures 1 to 5 This utility model discloses a dental flosser, which includes: The body components of the aforementioned dental flosser; The dental cleaning component 5 is connected to the second rotating body 4. The drive assembly is connected to the rotating shaft 31 and is used to drive the first rotating body 3 to rotate in the first direction A.

[0037] Specifically, in this embodiment, the dental cleaning component 5 includes a dental polishing cup, and the driving component includes a rotary drive motor, the driving end of which is disposed in the mounting groove 13 and connected to the second column portion 312 of the first rotating body 3, so as to drive the second rotating body 4 to drive the dental cleaning component 5 to rotate by driving the first rotating body 3 to rotate, but not limited thereto.

[0038] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A body assembly for a dental flosser, characterized in that, include: Handle, housing, first rotating body and second rotating body, The handle includes a first part and a second part along its length. The first part has a mounting groove. The second part includes a base connected to the first part and a boss extending upward from the middle of the end of the base away from the first part. A first shoulder is formed between the boss and the base. The second part has a first mounting hole extending along the length of the handle and penetrating the base and the boss. One end of the first mounting hole communicates with the mounting groove. The housing has a second mounting hole and a third mounting hole that extend outward in different directions and are interconnected. The boss is adapted to be inserted into the end of the second mounting hole away from the third mounting hole. The end of the housing that defines the side wall of the second mounting hole is provided at the first shoulder. The first rotating body includes a rotating shaft and a head. The rotating shaft extends from the middle of one end of the head. A second shoulder is formed between the head and the rotating shaft. A drive gear is formed at the end of the head away from the rotating shaft. The head is inserted into the end of the second mounting hole near the third mounting hole and is clearance-fitted with the second mounting hole. The end face of the second shoulder abuts against the end face of the boss. The rotating shaft passes through the first mounting hole and the mounting groove and is clearance-fitted with the first mounting hole. The second rotating body includes a driven gear portion, which passes through the third mounting hole. The driven gear portion meshes with the driving gear portion to convert the rotation of the first rotating body in the first direction into the rotation of the second rotating body in the second direction. One end of the second rotating body is used to connect to a dental cleaning component to drive the dental cleaning component to rotate.

2. The body assembly of the dental flosser according to claim 1, characterized in that, The axial dimension of the first mounting hole is greater than the axial dimension of the head.

3. The body assembly of the dental flosser according to claim 1, characterized in that, The end of the sidewall defining the second mounting hole of the housing is fixedly connected to the base by seam welding.

4. The body assembly of the dental flosser according to claim 1, characterized in that, The rotating shaft includes a first column and a second column. One end of the first column is connected to the end of the head away from the drive gear, and the other end is connected to the second column. The radial dimension of the second column is smaller than that of the first column.

5. The body assembly of the dental flosser according to claim 1, characterized in that, The first part includes a gripping part connected to the base, wherein the gripping part has the mounting groove at one end away from the base, and the radial dimension of the end is greater than the radial dimension of the base, and the outer side wall of the end of the gripping part connected to the base has a transitional tapered surface.

6. The body assembly of the dental flosser according to claim 1, characterized in that, The housing includes a first connecting portion extending in a first direction and a second connecting portion extending in a second direction. The first connecting portion has a second mounting hole having a first central axis, and the second connecting portion has a third mounting hole having a second central axis. The included angle between the first central axis and the second central axis is 90 degrees.

7. The body assembly of the dental flosser according to claim 1, characterized in that, The second rotating body includes a cover portion, a support portion, a shaft portion, and a seat portion connected sequentially along its length. The support portion passes through the third mounting hole at one end away from the second mounting hole and is clearance-fitted with the third mounting hole. The seat portion passes through the third mounting hole at one end near the second mounting hole. The radial dimension of the shaft portion is smaller than the radial dimensions of the support portion and the seat portion, so that its outer side wall forms an annular groove corresponding to the second mounting hole. The driven gear portion includes a plurality of driven teeth spaced around the shaft portion and spaced at the end face of the seat portion defining the annular groove. The cover portion is arranged outside the second mounting hole and its radial dimension is larger than the radial dimension of the support portion, so as to cover the outward opening of the second mounting hole. The end face of the cover portion opposite to the support portion is provided with a mounting shaft that is fixedly connected to the dental cleaning component.

8. The body assembly of the dental flosser according to claim 1, characterized in that, A rotation limiting hole is formed inward at the middle of the bottom wall of the third mounting hole, and a rotation support shaft is formed outward at the middle of the end of the second rotating body away from the dental cleaning component. The rotation support shaft passes through the rotation limiting hole and is clearance-fitted with the rotation limiting hole. The end face of the rotation support shaft abuts against the bottom wall of the rotation limiting hole.

9. The body assembly of the dental flosser according to claim 1, characterized in that, The second rotating body has a rotation limiting hole formed inward at the middle of the end away from the dental cleaning component, and a rotation support shaft is formed outward at the middle of the bottom wall of the third mounting hole. The rotation support shaft is inserted into the rotation limiting hole and is clearance-fitted with the rotation limiting hole. The end face of the rotation support shaft abuts against the bottom wall of the rotation limiting hole.

10. A dental flosser, characterized in that, include: The body assembly of the dental flosser as described in any one of claims 1 to 9; A dental cleaning component, wherein the dental cleaning component is connected to the second rotating body; A drive assembly is connected to the rotating shaft and is used to drive the first rotating body to rotate in a first direction.

Images