Bending machine head and bending machine

Abstract

The utility model relates to the field of medical instruments, in particular to a bending machine head and a bending machine, and the bending machine head comprises a shell, a switching assembly, a transmission assembly and a machine core assembly, the shell comprises a first bending part and a second bending part, and an included angle alpha between the first bending part and the second bending part is 0-90 degrees; the switching assembly is connected with the bottom end of the first bending part; the transmission assembly is located in the first bending part, and one end of the transmission assembly is connected with the switching assembly; the machine core assembly is located on the inner side of the second bending part, and one end of the machine core assembly is in transmission connection with the other end of the transmission assembly; wherein the switching assembly drives the transmission assembly so as to drive the movement assembly to rotate. The included angle ranging from 0 degree to 90 degrees is arranged on the shell, and the switching assembly, the transmission assembly and the machine core assembly are assembled in the shell. The problems that due to the fact that a machine head longitudinal hole and a machine head transverse hole of an existing bent machine head are perpendicular, a large mouth opening angle is needed when a root canal of a patient is treated, operation of a doctor is inconvenient, and the sight of the doctor is blocked are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an angle handpiece and an angle handpiece. Background Art

[0002] An angled handpiece is an instrument used for root canal enlargement and preparation. Its flexible orientation based on tooth position makes it ideal for complex procedures such as endodontic treatment. Most existing angled handpieces for endodontic treatment are large, with the longitudinal and transverse holes of the handpiece at 90-degree angles. This requires a wide mouth opening for posterior root canal treatment, and the handpiece forms a perpendicular angle with the tooth regardless of the direction of treatment. This makes the doctor's operation difficult and obstructs their line of sight. Utility Model Content

[0003] To solve the problem that the longitudinal hole and the transverse hole of the existing curved handpiece are perpendicular, which requires a large mouth opening angle when treating the posterior root canal of the patient, making it inconvenient for the doctor to operate and also obstructing the doctor's vision.

[0004] The utility model provides a bending machine head, comprising a shell, an adapter assembly, a transmission assembly and a core assembly; the shell comprises a first bending portion and a second bending portion, and the angle ɑ between the first bending portion and the second bending portion is 0°~90°; the adapter assembly is connected to the bottom end of the first bending portion; the transmission assembly is located inside the first bending portion, and one end of the transmission assembly is connected to the adapter assembly; the core assembly is located inside the second bending portion, and one end of the core assembly is connected to the other end of the transmission assembly; wherein the adapter assembly drives the transmission assembly, thereby driving the core assembly to rotate.

[0005] Preferably, the transmission assembly includes a first transmission shaft and a second transmission shaft connected by gears, the end of the first transmission shaft away from the second transmission shaft is connected to the adapter assembly, and the end of the second transmission shaft away from the first transmission shaft is transmission-connected to the movement assembly.

[0006] Preferably, a first transmission gear is provided at one end of the first transmission shaft, a second transmission gear and a third transmission gear are respectively provided at both ends of the second transmission shaft, a fourth transmission gear is provided on the outer side of the middle section of the movement assembly, the first transmission gear and the second transmission gear are meshed with each other, and the third transmission gear and the fourth transmission gear are meshed with each other.

[0007] Preferably, the first transmission gear and the third transmission gear are both bevel gears, and the teeth of the second transmission gear are arranged toward one end.

[0008] Preferably, first rolling bearings are provided on the outer diameters of both ends of the movement assembly, and the outer sides of the first rolling bearings are clamped on the inner sides of the second bending portion.

[0009] Preferably, the transmission assembly also includes a first limit member, the second transmission shaft passes through the first limit member, and second rolling bearings are provided on the outer diameters of both ends of the second transmission shaft. The second rolling bearings are clamped inside the first limit member, and the first limit member is installed on the inner side of the first bending portion.

[0010] Preferably, the transmission assembly further comprises an elastic member, which is arranged inside the first limiting member, and two ends of the elastic member are respectively in contact with the first limiting member and the second rolling bearing.

[0011] Preferably, third rolling bearings are provided on the outer diameters of both ends of the first transmission shaft, the adapter assembly includes a second limiter, the first transmission shaft passes through the second limiter, and the third rolling bearing is installed inside the second limiter.

[0012] Preferably, one end of the second bent portion is threadedly connected to a rear end cover, and the rear end cover is used to compress the core assembly.

[0013] The utility model also provides a contra-angle handpiece, which comprises a contra-angle handpiece handle and the contra-angle handpiece head, wherein a connecting assembly of the contra-angle handpiece head is connected to the contra-angle handpiece handle.

[0014] The beneficial effect of the present invention is that by setting an angle of 0° to 90° on the housing and assembling the adapter assembly, transmission assembly, and movement assembly into the housing, the problem of existing contra-angle handpieces having perpendicular longitudinal and transverse holes, which results in a large mouth opening angle required for posterior root canal treatment, inconvenience for the doctor's operation, and obstruction of the doctor's vision, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram provided by the utility model.

[0016] Figure 2 This is one of the explosion diagrams provided by the utility model.

[0017] Figure 3 This is the second exploded view provided by the present utility model.

[0018] Figure 4 This is a cross-sectional view provided by the present invention.

[0019] In the figure: 1-housing; 11-first bending part; 12-second bending part; 2-adapter assembly; 21-second limiter; 3-transmission assembly; 31-first transmission shaft; 311-first transmission gear; 32-second transmission shaft; 321-second transmission gear; 322-third transmission gear; 33-first limiter; 34-elastic part; 4-movement assembly; 41-fourth transmission gear; 5-first rolling bearing; 6-second rolling bearing; 7-third rolling bearing; 8-rear end cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] Reference Figure 1-Figure 4 A bending machine head includes a shell 1, an adapter assembly 2, a transmission assembly 3 and a movement assembly 4; the shell 1 includes a first bending portion 11 and a second bending portion 12, and the angle ɑ between the first bending portion 11 and the second bending portion 12 is 0°~90°; the adapter assembly 2 is connected to the bottom end of the first bending portion 11; the transmission assembly 3 is located inside the first bending portion 11, and one end of the transmission assembly 3 is connected to the adapter assembly 2; the movement assembly 4 is located on the inner side of the second bending portion 12, and one end of the movement assembly 4 is transmission-connected to the other end of the transmission assembly 3; wherein the adapter assembly 2 drives the transmission assembly 3, thereby driving the movement assembly 4 to rotate.

[0022] Preferably, the angle ɑ is between 30° and 60°, at which point the contra-angle handpiece has the widest treatment range and does not require the patient to open their mouth at a wide angle, making the treatment process more comfortable. Furthermore, the angle ɑ is 45°, at which point the contra-angle handpiece operates most stably.

[0023] By setting an angle of 0° to 90° on the housing 1 and assembling the adapter assembly 2, transmission assembly 3 and movement assembly 4 into the housing 1, the problem of the existing contra-angle handpiece having the longitudinal hole and the transverse hole of the handpiece perpendicular to each other, which requires a large mouth opening angle when treating posterior root canals, is solved, which is inconvenient for the doctor to operate and also obstructs the doctor's vision.

[0024] In some embodiments, the transmission assembly 3 includes a first transmission shaft 31 and a second transmission shaft 32 connected by gears, the end of the first transmission shaft 31 away from the second transmission shaft 32 is connected to the adapter assembly 2, and the end of the second transmission shaft 32 away from the first transmission shaft 31 is transmission-connected to the movement assembly 4.

[0025] like Figure 3 and Figure 4 As shown, when the first transmission shaft 31 rotates, the first transmission shaft 31 drives the second transmission shaft 32 to rotate, and the second transmission shaft 32 drives the movement assembly 4 to rotate. The arrangement of the first rotation shaft 31 and the second transmission shaft 32 forms a multi-stage transmission, which facilitates changing the transmission direction and transmission ratio, and realizes the conversion from low-speed rotation to high-speed rotation of the movement assembly 4.

[0026] like Figure 3As shown, in some embodiments, a first transmission gear 311 is provided at one end of the first transmission shaft 31, a second transmission gear 321 and a third transmission gear 322 are respectively provided at both ends of the second transmission shaft 32, and a fourth transmission gear 41 is provided on the outer side of the middle section of the movement assembly 4, the first transmission gear 311 and the second transmission gear 321 are meshed with each other, and the third transmission gear 322 and the fourth transmission gear 41 are meshed with each other.

[0027] Gear drives offer high transmission efficiency and a long service life. Furthermore, they can transmit a wide range of power and speeds and are relatively easy to maintain. Compared to other transmission methods, such as belt drives, gear drives generate less noise and vibration during operation, thereby improving overall equipment operation stability and user experience.

[0028] like Figure 3 As shown, in some embodiments, the first transmission gear 311 and the third transmission gear 322 are both bevel gears, and the teeth of the second transmission gear 321 are arranged toward one end.

[0029] The use of bevel gears can change the transmission direction. Bevel gears are very stable when running, with low noise and strong load capacity. The teeth of the second transmission gear 321 are arranged toward one end to better mesh with the first transmission gear 311, maintaining stable transmission. Compared with gears with teeth arranged toward the outside, it also saves more space.

[0030] like Figure 3 As shown, in some embodiments, first rolling bearings 5 ​​are provided on the outer diameters of both ends of the movement assembly 4 , and the outer sides of the first rolling bearings 5 ​​are clamped on the inner sides of the second bending portion 12 .

[0031] On one hand, the movement assembly 4 is mounted on the second bending portion 12 via the first rolling bearing 5 , and on the other hand, the provision of the first rolling bearing 5 ensures that the movement assembly 4 rotates coaxially and smoothly.

[0032] In some embodiments, the transmission assembly 3 also includes a first limit member 33, the second transmission shaft 32 passes through the first limit member 33, and the outer diameters of both ends of the second transmission shaft 32 are provided with second rolling bearings 6. The second rolling bearings 6 are clamped inside the first limit member 33, and the first limit member 33 is installed on the inner side of the first bending portion 11.

[0033] The first limiting member 33 and the second rolling bearing 6 cooperate with each other to install the second transmission shaft 32 inside the first bending portion 11; the second rolling bearing 6 plays a role in ensuring the coaxiality and smooth rotation of the second transmission shaft 32.

[0034] like Figure 3As shown, in some embodiments, the transmission assembly 3 further includes an elastic member 34 , which is disposed inside the first limiting member 33 , and two ends of the elastic member 34 abut against the first limiting member 33 and the second rolling bearing 6 , respectively.

[0035] The second transmission shaft 32 generates a small vibration during rotation, which is transmitted to the second rolling bearing 6. The vibration on the second rolling bearing 6 is weakened or eliminated by the elastic member 34, thereby preventing the vibration from being transmitted to the second stopper 21 and then to the first bent portion 11, thereby affecting the doctor's treatment operation. Optionally, the elastic member 34 is a spring.

[0036] like Figure 3 and Figure 4 As shown, in some embodiments, a third rolling bearing 7 is provided on the outer diameter of both ends of the first transmission shaft 31, the adapter assembly 2 includes a second limiter 21, the first transmission shaft 31 passes through the second limiter 21, and the third rolling bearing 7 is installed inside the second limiter 21.

[0037] The second limiting member 21 and the third rolling bearing 7 cooperate with each other to install the first transmission shaft 31 inside the adapter assembly 2 , and the third rolling bearing 7 plays a role in ensuring the coaxial and smooth rotation of the first transmission shaft 31 .

[0038] like Figure 4 As shown, in some embodiments, one end of the second bent portion 12 is threadedly connected to a rear end cover 8 , and the rear end cover 8 is used to press the core assembly 4 .

[0039] A button is provided in the rear end cover 8 , which is connected to the rear end cover 8 via a spring. The button moves elastically in the rear end cover 8 .

[0040] The present invention further provides a contra-angle handpiece, which comprises a contra-angle handpiece handle and the contra-angle handpiece head. The adapter assembly 2 of the contra-angle handpiece head is connected to the contra-angle handpiece handle.

[0041] How it works:

[0042] The external contra-angle handpiece handle is connected through the adapter assembly 2 of the contra-angle handpiece head, and the external setting drives the first transmission shaft 31 to rotate. The first transmission gear 311 and the second transmission gear 321 at one end of the first transmission shaft 31 are engaged to drive the second transmission shaft 32 to rotate. The third transmission gear 322 on the second transmission shaft 32 is engaged with the fourth transmission gear 41, driving the movement assembly 4 to rotate, thereby realizing the operation of the contra-angle handpiece head.

[0043] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or specific area.

[0044] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "install," "connect," "connect," and "assemble" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A contra-angle handpiece, characterized by: include: The housing (1) comprises a first bending portion (11) and a second bending portion (12), wherein an angle ɑ between the first bending portion (11) and the second bending portion (12) is 0° to 90°; A transition assembly (2) connected to the bottom end of the first bending portion (11); A transmission assembly (3) is located inside the first bending portion (11), one end of which is connected to the adapter assembly (2); A movement assembly (4) is located inside the second bending portion (12), one end of which is in transmission connection with the other end of the transmission assembly (3); The adapter assembly (2) drives the transmission assembly (3), thereby driving the movement assembly (4) to rotate.

2. The contra-angle handpiece according to claim 1, characterized in that: The transmission assembly (3) comprises a first transmission shaft (31) and a second transmission shaft (32) connected by gears, wherein one end of the first transmission shaft (31) away from the second transmission shaft (32) is connected to the adapter assembly (2), and one end of the second transmission shaft (32) away from the first transmission shaft (31) is in transmission connection with the movement assembly (4).

3. The contra-angle handpiece according to claim 2, characterized in that: A first transmission gear (311) is provided at one end of the first transmission shaft (31), a second transmission gear (321) and a third transmission gear (322) are provided at both ends of the second transmission shaft (32), a fourth transmission gear (41) is provided on the outer side of the middle section of the movement assembly (4), the first transmission gear (311) and the second transmission gear (321) are meshed with each other, and the third transmission gear (322) and the fourth transmission gear (41) are meshed with each other.

4. The contra-angle handpiece according to claim 3, characterized in that: The first transmission gear (311) and the third transmission gear (322) are both bevel gears, and the teeth of the second transmission gear (321) are arranged toward one end.

5. The contra-angle handpiece according to claim 1 or 2, characterized in that: First rolling bearings (5) are provided on the outer diameters of both ends of the movement assembly (4), and the outer sides of the first rolling bearings (5) are clamped on the inner sides of the second bending portions (12).

6. The contra-angle handpiece according to claim 2, characterized in that: The transmission assembly (3) further includes a first limiting member (33), the second transmission shaft (32) passes through the first limiting member (33), and second rolling bearings (6) are provided on the outer diameters of both ends of the second transmission shaft (32), the second rolling bearings (6) are clamped inside the first limiting member (33), and the first limiting member (33) is installed on the inner side of the first bending portion (11).

7. The contra-angle handpiece according to claim 6, characterized in that: The transmission assembly (3) further includes an elastic member (34), the elastic member (34) being arranged inside the first limiting member (33), and the two ends of the elastic member (34) respectively abutting against the first limiting member (33) and the second rolling bearing (6).

8. The contra-angle handpiece according to claim 2, characterized in that: The outer diameters of both ends of the first transmission shaft (31) are provided with third rolling bearings (7), the adapter assembly (2) includes a second limiting member (21), the first transmission shaft (31) passes through the second limiting member (21), and the third rolling bearing (7) is installed inside the second limiting member (21).

9. The contra-angle handpiece according to claim 1, characterized in that: One end of the second bent portion (12) is threadedly connected to a rear end cover (8), and the rear end cover (8) is used to press the movement assembly (4).

10. A contra-angle handpiece, characterized in that: The contra-angle handpiece comprises a contra-angle handpiece handle and a contra-angle handpiece head according to any one of claims 1 to 9, wherein the adapter assembly (2) of the contra-angle handpiece head is connected to the contra-angle handpiece handle.

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