CN210228351U

CN210228351U - Dental curette and root canal therapy appearance

Info

Publication number: CN210228351U
Application number: CN201920774577.6U
Authority: CN
Inventors: Yongchao Huang; 黄永朝; Kunsong Wei; 魏坤松; Kunyou Wu; 吴坤优
Original assignee: Guilin Woodpecker Medical Instruments Co Ltd
Current assignee: Guilin Woodpecker Medical Instruments Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-04-03
Anticipated expiration: 2029-05-27

Abstract

The utility model discloses a dental curette and root canal therapy appearance relates to oral medical instrument technical field. Including the aircraft nose shell, and the gear box subassembly of being connected with the first end of aircraft nose shell, be provided with first order transmission shaft in the aircraft nose shell, the gear box subassembly includes second transmission shaft, first order transmission shaft is connected with second transmission shaft transmission, and the central line of first order transmission shaft and second transmission shaft has first predetermined contained angle, the cover is equipped with the axle sleeve on the first order transmission shaft, the outer wall of axle sleeve one end is provided with annular arch, protruding axial one side of annular is supported with aircraft nose shell inner wall and is held, protruding axial opposite side of annular supports through pushing up tight sloping block and gear box subassembly and supports and hold, it includes first terminal surface and second terminal surface to push up tight sloping block, the second is preset the contained angle to have between the plumb line of first terminal surface and the plumb line of second terminal surface, first preset. The dental elbow can simplify the connection relation among the components of the dental elbow, and is convenient to assemble, disassemble, maintain and repair.

Description

Dental curette and root canal therapy appearance

Technical Field

The utility model relates to an oral medical instrument technical field particularly, relates to a dental curette and root canal therapy appearance.

Background

The root canal therapy instrument is also called a root canal motor, and is a precise electronic instrument designed for reducing the working strength of doctors, replacing manual expansion of root canals, improving efficiency, saving time and preparing more standard root canals. Compared with the traditional hand-operated instrument, the root canal therapy instrument can reduce the treatment time, relieve the pain of the treatment of patients, enlarge the effect to be more standard, and is more perfect for root canal filling, thereby improving the success rate of the root canal operation and being greatly superior to the traditional hand-operated instrument.

The dental handpiece is an important component of the root canal therapy apparatus and is also a part directly contacting the oral cavity, after being used, the dental handpiece needs to be disinfected and other links so as to be used next time, and in order to ensure the stability in use, the dental handpiece needs to be maintained regularly and other works.

In the prior art, the dental elbow components are unreasonable in interconnection and matching, and basically are fixed by using threaded connection and matching glue in order to ensure the required use function, so that the later maintenance and disassembly are very difficult, even the maintenance or the repair is impossible, and the use cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dental curette and root canal therapy appearance can simplify the relation of connection between each subassembly of dental curette, convenient assembly, dismantlement, maintenance and maintenance.

The embodiment of the utility model is realized like this:

in one aspect of the embodiment of the utility model, a dental bending handpiece is provided, which comprises a handpiece shell and a gear box component connected with the first end of the handpiece shell, wherein a first stage transmission shaft is arranged in the handpiece shell, the gear box component comprises a second stage transmission shaft, the first stage transmission shaft is connected with the second stage transmission shaft in a transmission way, the first stage transmission shaft and the central line of the second stage transmission shaft have a first preset included angle, a shaft sleeve is sleeved on the first stage transmission shaft, the outer wall of one end of the shaft sleeve is provided with an annular bulge, one side of the axial direction of the annular bulge is supported against the inner wall of the handpiece shell, the other side of the axial direction of the annular bulge is supported against the gear box component through a propping inclined block, the propping inclined block comprises a first end face and a second end face, a second preset included angle is arranged between the perpendicular line of the first end face and the, the first preset included angle is equal to the second preset included angle.

Optionally, aircraft nose shell inner wall is provided with the annular, the annular sets up and is keeping away from one side of gear box subassembly, annular protruding joint in the annular.

Optionally, the gear box assembly further comprises a gear box sleeved on the second-stage transmission shaft, and one end of the gear box is in threaded connection with the first end of the machine head shell and abuts against the abutting inclined block.

Optionally, the dental handpiece further comprises a movement assembly arranged at the second end of the handpiece shell, and the movement assembly is in transmission connection with the second-stage transmission shaft through the first-stage transmission shaft.

Optionally, the primary transmission shaft includes a first gear and a second gear disposed at two ends, the secondary transmission shaft includes a third gear disposed at two ends and a coupling, the movement assembly includes a transmission gear disposed on a shaft core, the transmission gear is engaged with the first gear, the second gear is engaged with the third gear, and the coupling is in transmission connection with a driving motor.

Optionally, an annular groove is formed in the inner wall of one end, provided with the annular protrusion, of the shaft sleeve, an elastic piece is arranged in the annular groove, the elastic piece abuts against the second gear through a cushion block arranged in the shaft sleeve, and a first bearing is arranged between the first-stage transmission shaft and the shaft sleeve.

Optionally, the gear box subassembly still establishes including the cover the last location box of second grade transmission shaft, location box joint is in the tight sloping block in top with between the gear box, second grade transmission shaft with be provided with the second bearing between the location box.

Optionally, a positioning pin ring is arranged at the joint of the gear box and the machine head shell, and positioning holes are formed in the end face and the side face of the positioning pin ring and used for positioning the gear box component and the machine head shell through positioning pieces.

Optionally, the movement assembly further comprises a bearing seat, and a third bearing is arranged between the bearing seat and the shaft core.

Another aspect of the embodiments of the present invention provides an endodontic instrument comprising the above-mentioned dental handpiece and a handle connected to the dental handpiece.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a dentistry elbow phone and root canal therapy appearance, first order transmission shaft and the second transmission shaft of connecting through the transmission to and the gear box subassembly of being connected with the first end of aircraft nose shell makes to have the predetermined angle of buckling between first order transmission shaft and the second transmission shaft (first order transmission shaft has first predetermined contained angle with the central line of second transmission shaft promptly). The first-stage transmission shaft and the second-stage transmission shaft are matched more stably through the tightly-pushing inclined block abutted against the gear box assembly. Through setting up the axle sleeve on the first order transmission axle, it is more steady to make the first order transmission axle rotate, and is protruding through the annular that sets up at the axle sleeve outer wall, makes butt between axle sleeve and the tight sloping block in top, and then makes the cooperation each other more stable, need not extra fixed measure, can simplify the relation of connection between each subassembly of dentistry curved mobile phone, convenient assembly, dismantlement, maintenance and maintenance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a dental handpiece according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a jacking sloping block provided by the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a handpiece shell according to an embodiment of the present invention;

fig. 4 is an exploded view of a gear box assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a first-stage transmission shaft and a shaft sleeve according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a movement assembly according to an embodiment of the present invention.

Icon: 100-dental handpieces; 110-a handpiece housing; 112-first stage driveshaft; 1122-a first gear; 1124-a second gear; 1126 — a first bearing; 114-a shaft sleeve; 1142-a ring-shaped protrusion; 1144-a ring groove; 1146-an elastic member; 1148-cushion block; 116-ring groove; 120-a gearbox assembly; 122-second stage drive shaft; 1222-a third gear; 1224-coupling; 124-a gearbox; 126-positioning the box body; 128-a second bearing; 130-tightly pushing the inclined block; 132-a first end face; 134-a second end face; 140-a cartridge assembly; 142-an axial core; 144-a drive gear; 146-a bearing seat; 148-a third bearing; 150-locating pin ring; 152-positioning holes; 154-positioning element.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present embodiment provides a dental bending handpiece 100, including a handpiece housing 110 and a gear box assembly 120 connected to a first end of the handpiece housing 110, wherein a first stage transmission shaft 112 is disposed in the handpiece housing 110, the gear box assembly 120 includes a second stage transmission shaft 122, the first stage transmission shaft 112 is in transmission connection with the second stage transmission shaft 122, a first preset included angle is formed between center lines of the first stage transmission shaft 112 and the second stage transmission shaft 122, a shaft sleeve 114 is sleeved on the first stage transmission shaft 112, an annular protrusion 1142 is disposed on an outer wall of one end of the shaft sleeve 114, one axial side of the annular protrusion 1142 abuts against an inner wall of the handpiece housing 110, the other axial side of the annular protrusion 1142 abuts against the gear box assembly 120 through a jacking oblique block 130, as shown in fig. 2, the jacking oblique block 130 includes a first end face 132 and a second end face 134, a second preset included angle is formed between a perpendicular line of, and the first preset included angle is equal to the second preset included angle.

Specifically, the first end surface 132 of the tightening inclined block 130 abuts against the annular protrusion 1142, and the second end surface 134 abuts against the gear box assembly 120, so that the inclination angle between the first-stage transmission shaft 112 and the second-stage transmission shaft 122 can be flexibly changed according to the inclination angles of the first end surface 132 and the second end surface 134 of the tightening inclined block 130, and the first-stage transmission shaft 112 and the second-stage transmission shaft 122 are easy to assemble and disassemble.

The embodiment of the utility model provides a dental handpiece 100, first order transmission shaft 112 and second transmission shaft 122 through the transmission is connected to and the gear box subassembly 120 of being connected with the first end of aircraft nose shell 110, make to have the predetermined angle of buckling between first order transmission shaft 112 and the second transmission shaft 122 (first order transmission shaft 112 has first predetermined contained angle with the central line of second transmission shaft 122 promptly). The first-stage transmission shaft 112 and the second-stage transmission shaft 122 are matched more stably through the abutting inclined block 130 abutted against the gear box assembly 120. Through setting up the axle sleeve 114 on first order transmission shaft 112, make first order transmission shaft 112 rotate more steadily, through setting up the annular protrusion 1142 at the axle sleeve 114 outer wall, make butt between axle sleeve 114 and the tight sloping block 130 in top, and then make the cooperation each other more stable, need not extra fixed measure, can simplify the relation of connection between each subassembly of dental curved mobile phone 100, convenient assembly, dismantlement, maintenance and maintenance.

As shown in fig. 1 and 3, the inner wall of the handpiece housing 110 is provided with an annular groove 116, the annular groove 116 is arranged on the side far away from the gear box assembly 120, and the annular protrusion 1142 is clamped in the annular groove 116.

Specifically, one side of the annular protrusion 1142 abuts against the annular groove 116, the other side abuts against the first end surface 132 of the abutting inclined block 130, and the annular groove 116 is used for limiting the shaft sleeve 114 and further limiting the first-stage transmission shaft 112. Thus, the annular protrusion 1142, the abutting inclined block 130 and the gear box assembly 120 are more stably supported, which is beneficial to improving the stability of the dental bender 100 during use.

As shown in fig. 1, the gear box assembly 120 further includes a gear box 124 disposed on the second stage transmission shaft 122, and one end of the gear box 124 is connected to the first end of the handpiece housing 110 through a screw and abuts against the tightening block 130.

Specifically, one end of the gear box 124 may be provided with an external thread or an internal thread, and the first end of the handpiece housing 110 is correspondingly provided with an internal thread or an external thread to form a mutual matching relationship. As such, the disassembly and assembly of the gearbox assembly 120 from the handpiece housing 110 is relatively simple, facilitating later maintenance or repair.

As shown in fig. 1, the dental bender 100 further comprises a cartridge assembly 140 disposed at the second end of the handpiece housing 110, the cartridge assembly 140 being drivingly connected to the second drive shaft 122 via the first drive shaft 112. Through the matching connection among the head shell 110, the jacking inclined block 130 and the gear box assembly 120, the movement assembly 140 can normally drive between the first-stage transmission shaft 112 and the second-stage transmission shaft 122.

As shown in fig. 4, 5 and 6, the primary drive shaft 112 includes a first gear 1122 and a second gear 1124 disposed at both ends, the secondary drive shaft 122 includes a third gear 1222 and a coupling 1224 disposed at both ends, the movement assembly 140 includes a transmission gear 144 disposed on the shaft core 142, the transmission gear 144 is engaged with the first gear 1122, the second gear 1124 is engaged with the third gear 1222, and the coupling 1224 is in driving connection with the driving motor.

Specifically, the first and

second gears

1122, 1124 may be integrally formed with or detachably connected to the main body of the primary drive shaft 112, and similarly, the third gear 1222, the coupling 1224 may be integrally formed with or detachably connected to the main body of the secondary drive shaft 122. The embodiment of the present invention does not specifically limit the structures of the first gear 1122, the second gear 1124, the third gear 1222 and the coupling 1224, and may be configured as an internal gear, an external gear, or other gears. In addition, the embodiment of the present invention does not specifically limit the engagement angle between the transmission gear 144 and the first gear 1122 and the engagement angle between the second gear 1124 and the third gear 1222, and can be flexibly set according to the actual connection relationship.

As shown in fig. 5, an annular groove 1144 is formed in an inner wall of one end of the shaft sleeve 114, which is provided with an annular protrusion 1142, an elastic member 1146 is arranged in the annular groove 1144, the elastic member 1146 abuts against the second gear 1124 via a cushion block 1148 arranged in the shaft sleeve 114, and a first bearing 1126 is arranged between the first-stage transmission shaft 112 and the shaft sleeve 114.

Specifically, the elastic member 1146 may be a compression spring, and one end of the elastic member 1146 abuts against the groove bottom of the annular groove 1144, and the other end abuts against the pad 1148. Therefore, the posture of the first stage transmission shaft 112 can be adjusted according to different stress conditions of the first stage transmission shaft 112, and the stability of the meshing of the transmission gear 144 and the first gear 1122 and the meshing of the second gear 1124 and the third gear 1222 can be enhanced. In addition, the first bearings 1126 are arranged at two ends of the shaft sleeve 114, and the first-stage transmission shaft 112 rotates more stably through the first bearings 1126 arranged between the first-stage transmission shaft 112 and the shaft sleeve 114, so that friction during rotation is reduced, and a silencing effect in the using process is better.

As shown in fig. 4, the gear box assembly 120 further includes a positioning box 126 disposed on the second stage transmission shaft 122, the positioning box 126 is clamped between the jacking incline block 130 and the gear box 124, and a second bearing 128 is disposed between the second stage transmission shaft 122 and the positioning box 126.

Specifically, by fitting the gear box 124 and the handpiece housing 110 in place, the positioning box 126 is clamped between the abutting slant block 130 and the gear box 124 to position the secondary transmission shaft 122. Through the second bearing 128 arranged between the second-stage transmission shaft 122 and the positioning box body 126, the second-stage transmission shaft 122 rotates more stably, friction during rotation is reduced, a silencing effect in the use process is better, and the service life of the second-stage transmission shaft 122 is prolonged.

As shown in FIG. 1, a positioning pin ring 150 is disposed at the connection position of the gear box 124 and the handpiece housing 110, and positioning holes 152 are disposed on the end surface and the side surface of the positioning pin ring 150 for positioning the gear box assembly 120 and the handpiece housing 110 by a positioning member 154.

Specifically, the positioning hole 152 may be configured as a through hole or a screw hole, and the positioning element 154 may be configured as a pin or a screw correspondingly, so as to achieve the function of fastening the positioning. The first end of aircraft nose shell 110 also corresponds and is provided with through or the screw to make gear box subassembly 120 and aircraft nose shell 110 stable cooperation fixed, prevent to loosen between gear box subassembly 120 and the aircraft nose shell 110, promote the stability of connecting.

As shown in fig. 1 and 6, the movement assembly 140 further includes a bearing seat 146, and a third bearing 148 is disposed between the bearing seat 146 and the shaft core 142. Therefore, the transmission stability of the movement assembly 140 can be enhanced, the friction during rotation can be reduced, the silencing effect in the use process is better, and the service life of the movement assembly 140 is prolonged.

The embodiment of the utility model also discloses a root canal therapy instrument, including as above arbitrary dental handpiece 100. The endodontic instrument includes the same structure and advantageous effects as the dental bender 100 of the previous embodiment. The structure and advantages of the dental handpiece 100 have been described in detail in the foregoing embodiments and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a dental elbow phone, its characterized in that, includes the aircraft nose shell, and with the gear box subassembly that aircraft nose shell first end is connected, be provided with first order transmission shaft in the aircraft nose shell, the gear box subassembly includes second transmission shaft, first order transmission shaft with second transmission shaft transmission is connected, just first order transmission shaft with the central line of second transmission shaft has first default contained angle, the cover is equipped with the axle sleeve on the first order transmission shaft, the outer wall of axle sleeve one end is provided with annular arch, annular arch axial one side with aircraft nose shell inner wall supports and holds, annular arch axial opposite side through pushing up tight sloping block with the gear box subassembly supports and holds, push up tight sloping block and include first terminal surface and second terminal surface, the perpendicular line of first terminal surface with the perpendicular line of second terminal surface between have the second default contained angle, the first preset included angle is equal to the second preset included angle.

2. The dental bur of claim 1, wherein the inner wall of the handpiece housing is provided with an annular groove, the annular groove is provided on a side away from the gear box assembly, and the annular protrusion is engaged in the annular groove.

3. The dental bender as claimed in claim 1 or 2, wherein the gearbox assembly further comprises a gearbox sleeved on the second stage transmission shaft, one end of the gearbox is in threaded connection with the first end of the handpiece housing and abuts against the abutting inclined block.

4. The dental bur of claim 1, further comprising a cartridge assembly disposed at a second end of the handpiece housing, the cartridge assembly being drivingly connected to the secondary drive shaft through the primary drive shaft.

5. The dental bender as claimed in claim 4, wherein said primary drive shaft includes a first gear and a second gear disposed at opposite ends thereof, said secondary drive shaft includes a third gear disposed at opposite ends thereof and a coupling, said cartridge assembly includes a drive gear disposed on a shaft core, said drive gear being in meshing engagement with said first gear, said second gear being in meshing engagement with said third gear, said coupling being in driving connection with a drive motor.

6. The dental bur of claim 5, wherein the shaft sleeve has an annular recess formed in an inner wall of an end thereof where the annular protrusion is formed, the annular recess having a resilient member disposed therein, the resilient member being supported against the second gear by a pad disposed in the shaft sleeve, and a first bearing is disposed between the first stage transmission shaft and the shaft sleeve.

7. The dental bender as claimed in claim 3, wherein the gear box assembly further comprises a positioning box body sleeved on the secondary transmission shaft, the positioning box body is clamped between the tightening ramp block and the gear box, and a second bearing is arranged between the secondary transmission shaft and the positioning box body.

8. The dental bender as claimed in claim 3, wherein a positioning pin ring is provided at the junction of the gear box and the handpiece housing, and positioning holes are provided on both the end face and the side face of the positioning pin ring for positioning the gear box assembly and the handpiece housing by positioning members.

9. The dental bur of claim 5, wherein the cartridge assembly further comprises a bearing housing, a third bearing being disposed between the bearing housing and the shaft core.

10. An endodontic instrument comprising the dental bender according to any of claims 1 to 9 and a handle connected to said dental bender.