WO2022087773A1 - 一种夹头及牙科手机 - Google Patents

一种夹头及牙科手机 Download PDF

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Publication number
WO2022087773A1
WO2022087773A1 PCT/CN2020/123598 CN2020123598W WO2022087773A1 WO 2022087773 A1 WO2022087773 A1 WO 2022087773A1 CN 2020123598 W CN2020123598 W CN 2020123598W WO 2022087773 A1 WO2022087773 A1 WO 2022087773A1
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WO
WIPO (PCT)
Prior art keywords
elastic
bearing
side wall
gear bearing
gear
Prior art date
Application number
PCT/CN2020/123598
Other languages
English (en)
French (fr)
Inventor
范志勇
蒋俊强
权晶晶
Original Assignee
深圳市雅维医疗器械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市雅维医疗器械有限公司 filed Critical 深圳市雅维医疗器械有限公司
Priority to PCT/CN2020/123598 priority Critical patent/WO2022087773A1/zh
Publication of WO2022087773A1 publication Critical patent/WO2022087773A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders

Definitions

  • the utility model relates to the technical field of dental instruments, in particular to a chuck and a dental handpiece.
  • dental handpieces In the field of dental medical equipment, dental handpieces (Turbine handpieces with light) is a relatively common dental instrument, the dental handpiece can be used to install root canal files and other treatment tools to drive root canal files or other related treatment tools to rotate at high speed for root canal treatment or other operations.
  • the part of the dental handpiece that holds the treatment tool is usually set as a collet part of the detachable treatment tool, so as to realize the replacement of different types of treatment tools.
  • the collet parts of the related art are mainly suitable for traditional treatment tools, such as traditional root canal files, because the traditional root canal file is provided with an integrally formed holding handle at the file handle portion, and the holding handle is usually matched with the collet.
  • the specific thread of the part realizes the fixation and drives the root canal file.
  • the collet part cannot be directly fixed and transmitted with the root canal file, which will reduce the concentricity difference between the root canal file and the dental handpiece, and reduce the Transmission efficiency of root canal files.
  • the utility model provides a chuck and a dental handpiece, which can solve the problem that the dental handpiece in the prior art cannot be directly fixed and driven with the root canal file, resulting in poor concentricity and transmission efficiency between the dental handpiece and the root canal file. Low technical issues.
  • a first aspect of the present utility model provides a collet.
  • the collet includes a cylindrical casing, a gear bearing that is sleeved on the cylindrical casing and is rotatably connected to the cylindrical casing, and an inner sleeve.
  • An elastic locking cap which is slidably connected to the gear bearing, the end of the elastic locking cap facing the outside of the cylindrical shell is engaged with the gear bearing, and the inner side wall of the gear bearing is engaged with the gear bearing.
  • a limit ring groove recessed on the inner side wall of the gear bearing is provided, wherein the elastic lock cap is in a retracted state when it is located on the inner side wall of the gear bearing, and the elastic lock cap is located in the limit ring groove in diastolic state.
  • the gear bearing includes: a bearing main body with an accommodation space, a gear part fixedly connected with the outer side wall of the bearing main body, the gear part is drivingly connected with the external target transmission part of the collet, the The drive connection of the target drive component outside the collet with the gear portion translates into rotational motion of the bearing body within the cylindrical housing.
  • the elastic lock cap includes: a lock cap base, a plurality of mutually spaced and centrally symmetrical elastic columns extending from the lock cap base in the vertical direction, and a plurality of elastic columns formed on each of the elastic columns close to each other.
  • the protruding part at one end of the lock cap base, the protruding part is engaged with the gear bearing, the protruding part and each elastic column are provided with a protruding brim at one end away from the lock cap base, wherein When a plurality of the protruding eaves cooperate with each other and abut against the inner side wall of the bearing main body, the elastic locking cap is in a retracted state, and the plurality of the protruding eaves cooperate with each other and are limited to the inner side wall of the bearing main body. When the upper limit ring groove is in place, the elastic locking cap is in a relaxed state.
  • the cylindrical shell includes: a cylindrical side wall, two annular limiting portions extending toward the center along the ports at both ends of the cylindrical side wall, and two annular limiting portions opened on the cylindrical side wall.
  • the gear bearing is sleeved on the side wall of the cylinder, the gear part is clamped with the annular phase part at one end of the side wall of the cylinder, and the external target transmission part of the chuck passes through It is drively connected with the gear part through the motorized through hole.
  • the collet further includes an elastic member, the elastic member is sleeved on the gear bearing, and one end of the elastic member abuts against the plurality of elastic columns, and the bearing body is away from the One end of the elastic lock cap is provided with a bearing closing ring, and the other end of the elastic component abuts against the bearing closing ring, and the elastic component enables elastic sliding connection between the elastic locking cap and the gear bearing.
  • the material of the cylindrical housing and the gear bearing is alloy.
  • a second aspect of the present utility model provides a dental handpiece, comprising: any one of the collet provided in the first aspect, a transmission device mechanically connected to the collet, and a treatment device detachably connected to the collet tool.
  • the utility model provides a collet.
  • the collet comprises a cylindrical shell, a gear bearing which is sleeved on the cylindrical shell and is rotatably connected with the cylindrical shell, and a gear bearing which is sleeved on the gear bearing and is connected with the gear bearing.
  • the elastic lock cap can be slidably connected. The end of the elastic lock cap facing the outside of the cylindrical shell is clamped with the gear bearing.
  • the inner side wall of the gear bearing is provided with a limit ring groove recessed in the inner side wall of the gear bearing.
  • the chuck provided by this solution includes a cylindrical shell, a gear bearing and an elastic lock cap.
  • the elastic lock cap can be slidably connected to the inner side wall of the gear bearing, and the elastic lock cap is located on the inner side wall of the gear bearing.
  • the elastic lock cap slides along the inner side wall of the gear bearing to the limit ring groove and is in the diastolic state, which realizes the direct fixation of the treatment tools, such as the direct fixation of the root canal file.
  • the concentricity between the handpieces improves transmission efficiency and reliability.
  • FIG. 1 is a structural perspective view of a chuck provided by an embodiment of the present invention.
  • Fig. 2 is a cross-sectional structural schematic diagram of a chuck provided by the embodiment of Fig. 1 along the line A-A;
  • FIG. 3 is a three-dimensional structural view of a gear bearing provided by an embodiment of the present utility model
  • FIG. 4 is a schematic cross-sectional structural diagram of the gear bearing provided by the embodiment of FIG. 3 along line B-B;
  • FIG. 5 is a three-dimensional structural view of an elastic lock cap according to an embodiment of the present utility model
  • FIG. 6 is a schematic cross-sectional structural diagram of the elastic locking cap provided by the embodiment of FIG. 5 along the line C-C.
  • the present invention provides a collet; please refer to FIGS. 1-6 for details of the structure of the collet.
  • the collet comprises: a cylindrical housing 10 , a gear bearing 20 sleeved inside the cylindrical housing 10 and rotatably connected to the cylindrical housing 10 , and a gear bearing 20 sleeved inside the gear bearing 20 and slidable with the gear bearing 20
  • the elastic locking cap 30 is connected, the end of the elastic locking cap 30 facing the outside of the cylindrical shell 10 is snapped with the gear bearing 20 , and the inner side wall of the gear bearing 20 is provided with a limit ring groove 23 recessed in the inner side wall of the gear bearing 20 , wherein, the elastic locking cap 30 is in a contracted state when it is located on the inner side wall of the gear bearing 20 , and is in a relaxed state when it is located in the limiting ring groove 23 .
  • the collet is related to the technical field of dental medical equipment, and is mainly used in dental medical equipment, such as dental handpieces, root canal therapy instruments and other equipment, to install some therapeutic tools. fixed and direct drive.
  • the collet includes a cylindrical shell 10, the cylindrical shell 10 has a cylindrical cylindrical side wall 11, and both ends of the cylindrical shell 10 are in communication with the outside, that is, a cylindrical shell
  • the bottom surfaces of both ends of the casing 10 have through holes, so that the inside of the cylindrical casing 10 communicates with the outside;
  • the gear bearing 20 is a bearing with a receiving space, and the inner side wall of the bearing is provided with a concave limit ring groove 23, the bearing
  • the outer part is provided with a gear that is fixedly connected around the bearing, and the gear is mainly used for driving connection with the transmission part outside the casing to obtain the external power for driving the rotation of the bearing;
  • the elastic lock cap 30 is a retractable and unfoldable locking part, the The elastic lock cap 30 includes: a lock cap base 31,
  • the rod body placed in the middle of the plurality of elastic columns 32 can be clamped and fixed.
  • the middle part of the lock cap base 31 of the elastic lock cap 30 is provided with a base through hole 311, and the base through hole 311 is used for
  • the treatment tool specifically, taking the root canal file as the treatment tool as an example, before the dental root canal treatment, after the file handle of the root canal file is directly passed through the through hole in the middle of the lock cap base 31, the root canal file is removed.
  • the file handle is located in the middle of the multiple elastic columns 32 of the elastic locking cap 30.
  • the multiple elastic columns 32 are contracted toward the center, so as to clamp and bite the root canal file.
  • the direct installation and fixation of the file handle of the root canal file is realized, so that the root canal file does not need to be fixed between the root canal file and the elastic locking cap 30 by means of specific components.
  • the elastic locking cap 30 is slidably connected to the inner side wall of the gear bearing 20, and since the inner space of the gear bearing 20 is smaller than the natural stretched state of the plurality of elastic columns 32 of the elastic locking cap 30, when the elastic locking cap 30 is arranged on the gear In the bearing 20, the multiple elastic columns 32 of the elastic locking cap 30 are under pressure, so that the multiple elastic columns 32 of the elastic locking cap 30 are in a contracted state together, which can realize the fixation of the file handle of the root canal file;
  • the cap 30 slides into the limit ring groove 23 along the inner side wall of the gear bearing 20, since the limit ring groove 23 is a concave structure, when a specific part of the elastic lock cap 30 falls into the limit ring groove 23, the elastic lock The cap 30 is in the diastolic state, and the file handle of the root canal file can be loosened or released when the power is turned off, so as to realize the replacement of the root canal file; for the root canal file with a relatively long specification, the file handle of the root canal file can be passed through the
  • the root canal file can be expanded and retracted in the collet according to the actual use requirements.
  • the bottom wall of the opposite end of the gear bearing 20 and the elastic lock cap 30 is provided with a bearing through hole 241.
  • the file handle of the root canal file passes through the base through hole 311 of the lock cap base 31 of the elastic lock cap 30, and passes through a plurality of elastic columns 32 of the elastic lock cap 30.
  • the root canal file In the middle space, and according to the adjustment of the telescopic length of the root canal file, the root canal file can be moved through the bearing through hole 241 of the gear bearing 20, so that the file handle of the root canal file enters from the base through hole 311 of the collet, and passes from the clamp
  • the bearing through hole 241 of the head protrudes to realize the adjustment of the use length of the root canal file; therefore, when the elastic locking cap 30 is in the diastolic state, the root canal file can be moved, such as the replacement of the root canal file or the adjustment of the root canal file extension length.
  • the gear bearing 20 includes: a bearing body 21 with an accommodation space, a gear part 22 fixedly connected with the outer side wall of the bearing body 21 , and the gear part 22 is connected to the chuck.
  • the transmission connection of the external target transmission part is used for the transmission movement between the target transmission part outside the collet and the gear part 22, and the transmission connection between the objective transmission part outside the collet and the gear part 22 is transformed into the bearing body 21 located in the cylindrical shell Rotational motion within 10 , that is, the driving motion corresponding to the driving connection between the target transmission component outside the collet and the gear portion 22 can be converted into rotational motion of the bearing body 21 in the cylindrical housing 10 .
  • the bearing main body 21 is a bearing with an accommodation space
  • the inner side wall of the bearing main body 21 is provided with a concave limit ring groove 23
  • the outside of the bearing is provided with a gear fixedly connected around the bearing
  • the gear is mainly used for connecting with the chuck
  • the transmission components of the external dental medical equipment are connected by transmission, and the corresponding transmission movement through the transmission connection is converted into the rotational movement of the gear bearing 20 , so as to realize the rotation of the gear bearing 20 driven by the external power.
  • the length of the bearing body 21 is 8.70mm, the radius of the bearing body 21 is 2mm, the width of the limit ring groove 23 is 0.75mm, the diameter of the limit ring groove 23 is 3.50mm, and the diameter of the inner side wall of the gear bearing 20 is 2.97mm.
  • one end of the bearing body 21 away from the elastic locking cap 30 is provided with a bearing closing ring 24, and a bearing through hole 241 is formed in the middle of the bearing closing ring 24, and the bearing through hole 241 can be used for passing the target treatment tool to the outside of the hole, Achieve adjustment of the length of the target treatment tool.
  • the elastic locking cap 30 includes: a locking cap base 31 , and a plurality of elastic columns that are spaced apart from each other and are centrally symmetrical and extend from the locking cap base 31 in the vertical direction. 32.
  • protruding eaves 24 wherein when the plurality of protruding eaves 24 cooperate with each other and abut against the inner side wall of the bearing body 21, the elastic locking cap 30 is in a retracted state, and the plurality of protruding eaves 24 cooperate with each other and are limited to the position of the bearing body 21.
  • the elastic locking cap 30 When the limit ring groove 23 on the inner side wall is in place, the elastic locking cap 30 is in a relaxed state.
  • the elastic locking cap 30 is a retractable and deployable locking component, and the elastic pillars 32 are spaced apart from each other and are centrally symmetric, that is, there are openings between adjacent elastic pillars 32, and the plurality of elastic pillars 32 together form a In the surrounding wall of the opening, there is a receiving space in the middle of the plurality of elastic columns 32 ; when the plurality of elastic columns 32 are pressed, the rod objects placed in the middle of the plurality of elastic columns 32 can be clamped and fixed.
  • a base through hole 311 is formed in the middle part of the lock cap base 31 of the elastic lock cap 30, and the base through hole 311 communicates with the receiving space enclosed by a plurality of elastic force 32 columns.
  • the base through hole 311 is used for Installation of treatment tools.
  • the root canal file as a treatment tool as an example, in practical application, before the dental root canal treatment, the target root canal file needs to be installed or replaced, and the elastic locking cap 30 is exposed to the cylindrical shell 10 by pressing the elastic locking cap 30 .
  • the outer lock cap base 31 allows the elastic lock cap 30 to slide along the inner side wall of the gear bearing 20, and when the raised brim 24 of the elastic lock cap 30 slides to the limit ring groove 23 of the gear bearing 20, the elastic lock cap 30 is in the In the diastolic state, after the file handle of the root canal file is directly passed through the through hole in the middle of the lock cap base 31, the file handle of the root canal file is located in the middle of the plurality of elastic columns 32 of the elastic lock cap 30; At least one elastic telescopic part is arranged inside the elastic lock cap 30, so that there is elastic force between the elastic locking cap 30 and the gear bearing 20. When the pressure on the locking cap base 31 of the elastic locking cap 30 is stopped, the elastic locking cap 30 is forced by the elastic member 40.
  • the pressure is released from the limit ring groove 23 and slides along the inner side wall of the gear bearing 20 to the direction of the lock cap base 31 toward the outside, so that the outer sides of the plurality of elastic columns 32 simultaneously receive the pressure exerted by the inner side wall of the gear bearing 20 , so that the plurality of elastic columns 32 are contracted toward the center, so as to clamp and fix the root canal file.
  • the file handle of the root canal file can be directly installed and fixed, so that the root canal file does not need to be fixed with the elastic locking cap 30 by means of specific components.
  • the height of each elastic column 32 is 3.88mm
  • the thickness of the lock cap base 31 is 1.20mm.
  • the cylindrical shell 10 includes: a cylindrical side wall 11, two annular limiting portions 12 extending toward the center along the ports at both ends of the cylindrical side wall 11 respectively, and a The motorized through hole 13 on the side wall 11, the gear bearing 20 is sleeved on the cylinder side wall 11, the gear part 22 is clamped with the annular phase part at one end of the cylinder side wall 11, and the external target transmission part of the chuck passes through The motorized through hole 13 is in driving connection with the gear part 22 .
  • the cylindrical shell 10 has a cylindrical cylindrical side wall 11, and both ends of the cylindrical shell 10 are in communication with the outside, that is, the bottom surfaces of the two ends of the cylindrical shell 10 have through holes, so that the cylindrical shell 10 has a through hole.
  • the inside of the housing 10 is communicated with the outside.
  • the length of the cylindrical bearing is 6.10 mm
  • the thickness of the annular limiting portion 12 is 1.1 mm
  • the radius of the cylindrical side wall 11 is 3 mm
  • the annular limiting portion 12 is along the radius
  • the extension thickness in the direction is 1 mm
  • the radius of the through holes at both ends of the cylindrical side wall 11 is 2 mm.
  • the collet further includes an elastic member 40 , the elastic member 40 is sleeved on the gear bearing 20 , and one end of the elastic member 40 abuts against the plurality of elastic columns 32 , and one end of the bearing body 21 away from the elastic locking cap 30 is provided with There is a bearing closing ring 24 , the other end of the elastic member 40 abuts against the bearing closing ring 24 , and the elastic member 40 makes the elastic locking cap 30 and the gear bearing 20 elastically slidably connected.
  • the elastic member 40 can be a spring, but is not limited to this; by embedding the spring in the gear bearing 20, the spring is abutted against the bearing closing ring 24 of the gear bearing 20 and the elastic locking cap 30 to realize the elastic locking cap Elastic sliding connection between 30 and gear bearing 20 .
  • the material of the cylindrical housing 10 and the gear bearing 20 is alloy. Specifically, alloy electroplating can be used. This material is light in weight, corrosion resistance, widely used, easy to process and manufacture, and has a large hardness in terms of softness and hardness, which can effectively prevent damage or deformation caused by external forces; , the cylindrical housing 10 and the gear bearing 20 can also be obtained by using stainless steel or other materials.
  • the elastic locking cap 30 can also be made of this kind of material, which is not limited in this embodiment. By choosing the right material, the reliability of the chuck can be improved.
  • the utility model provides a collet.
  • the collet comprises a cylindrical shell, a gear bearing which is sleeved on the cylindrical shell and is rotatably connected with the cylindrical shell, and a gear bearing which is sleeved on the gear bearing and is connected with the gear bearing.
  • the elastic lock cap can be slidably connected. The end of the elastic lock cap facing the outside of the cylindrical shell is clamped with the gear bearing.
  • the inner side wall of the gear bearing is provided with a limit ring groove recessed in the inner side wall of the gear bearing.
  • the chuck provided by this solution includes a cylindrical shell, a gear bearing and an elastic lock cap.
  • the elastic lock cap can be slidably connected to the inner side wall of the gear bearing, and the elastic lock cap is located on the inner side wall of the gear bearing.
  • the elastic lock cap slides along the inner side wall of the gear bearing to the limit ring groove and is in the diastolic state, which realizes the direct fixation of the treatment tools, such as the direct fixation of the root canal file.
  • the concentricity between the handpieces improves transmission efficiency and reliability.
  • the present invention also provides a dental handpiece, comprising: any one of the collet provided in the above embodiments, a transmission device mechanically connected to the collet, and a treatment tool detachably connected to the collet.
  • the collet can be installed on a dental handpiece or a root canal therapy apparatus; preferably, in this embodiment, the dental handpiece is used as an example.
  • the equipment housing of the accommodating space, the inside of the equipment housing may contain a motor to drive the target components inside the collet, such as the gear bearing contained in the collet.
  • the collet is used for detachable installation and fixation with the treatment tool.
  • the collet and the treatment tool are fixed by direct installation, which can adapt to the development of the non-clamping handle of the treatment tool, and can improve the treatment according to the The concentricity between the chuck and the dental handpiece improves the transmission efficiency.
  • the treatment tool may be a root canal file or the like, which is not further limited in this embodiment.

Abstract

一种夹头，包括：圆筒壳体（10）、内套接于圆筒壳体（10）且与圆筒壳体（10）可转动连接的齿轮轴承（20）、及内套接于齿轮轴承（20）且与齿轮轴承（20）可滑动连接的弹力锁帽（30），弹力锁帽（30）朝向圆筒壳体（10）外部的一端与齿轮轴承（20）相卡接，齿轮轴承（20）的内侧壁设置有凹陷于齿轮轴承（20）的内侧壁的限位环槽（23），其中，弹力锁帽（30）位于齿轮轴承（20）的内侧壁时处于收缩状态，弹力锁帽（30）位于限位环槽（23）时处于舒张状态。可实现夹头对根管锉的直接固定，实现直接传动，提高根管锉与牙科手机之间的同心度，从而提高了传动效率。

Description

一种夹头及牙科手机 技术领域
本实用新型涉及牙科器械的技术领域，尤其涉及一种夹头及牙科手机。
 背景技术
在牙科医疗器械领域中，牙科手机（Turbine handpieces with light）是一种较为常见的牙科器械，该牙科手机可用于安装根管锉等治疗工具，以带动根管锉或其他相关治疗工具进行高速转动，以便进行根管治疗或执行其他作业。为了实现手机牙科的多种类型工具之间的更换，通常将牙科手机的夹持治疗工具的部位设置为可拆卸治疗工具的夹头部件，以实现不同类型的治疗工具的更换。
相关技术的夹头部件主要适用于传统的治疗工具，如传统的根管锉，由于传统的根管锉的锉柄部位设有一体成型的夹持柄，该夹持柄通常通过配合夹头部位的特定螺纹实现固定，且对根管锉的进行传动。但是，随着根管锉的去除夹持柄的发展趋势，夹头部件无法与根管锉之间直接固定及传动，这将降低根管锉与牙科手机之间的同心度差，降低了对根管锉的传动效率。
因此，有必要提出一种新的夹头部件。
 技术问题
本实用新型提供了一种夹头及牙科手机，可以解决现有技术中的牙科手机无法与根管锉之间直接固定及传动，导致牙科手机与根管锉之间的同心度差及传动效率低的技术问题。
 技术解决方案
本实用新型第一方面提供一种夹头，夹头包括：圆筒壳体、内套接于所述圆筒壳体且与所述圆筒壳体可转动连接的齿轮轴承、及内套接于所述齿轮轴承且与所述齿轮轴承可滑动连接的弹力锁帽，所述弹力锁帽朝向所述圆筒壳体外部的一端与所述齿轮轴承相卡接，所述齿轮轴承的内侧壁设置有凹陷于所述齿轮轴承的内侧壁的限位环槽，其中，所述弹力锁帽位于所述齿轮轴承的内侧壁时处于收缩状态，所述弹力锁帽位于所述限位环槽时处于舒张状态。
可选的，所述齿轮轴承包括：具有收容空间的轴承主体、与所述轴承主体的外侧壁固定连接的齿轮部，所述齿轮部与所述夹头的外部目标传动部件传动连接，所述夹头外部的目标传动部件与所述齿轮部的传动连接转化为所述轴承主体位于所述圆筒壳体内的转动运动。
可选的，所述弹力锁帽包括：锁帽底座、分别自所述锁帽底座向垂直方向延伸形成的相互间隔且呈中心对称的多个弹力柱、形成于每个所述弹力柱靠近所述锁帽底座一端的凸起部，所述凸起部与所述齿轮轴承相卡接，所述凸起部与每个所述弹力柱远离所述锁帽底座一端设有凸起檐，其中，多个所述凸起檐相互配合与所述轴承主体的内侧壁相抵接时，所述弹力锁帽处于收缩状态，多个所述凸起檐相互配合限位于与所述轴承主体的内侧壁上的限位环槽时，所述弹力锁帽处于舒张状态。
可选的，所述圆筒壳体包括：圆筒侧壁、分别沿着所述圆筒侧壁两端的端口向中心延伸的两个环形限位部、及开设于所述圆筒侧壁上的机动通孔，所述齿轮轴承内套接于所述圆筒侧壁，所述齿轮部与所述圆筒侧壁一端的环形相位部相卡接，所述夹头的外部目标传动部件穿过所述机动通孔与所述齿轮部传动连接。
可选的，所述夹头还包括弹性部件，所述弹性部件内套接于所述齿轮轴承，且所述弹性部件的一端与所述多个弹力柱相抵顶，所述轴承主体远离所述弹力锁帽的一端设有轴承封闭环，所述弹性部件的另一端与所述轴承封闭环相抵顶，所述弹性部件使得所述弹力锁帽与齿轮轴承之间弹性滑动连接。
可选的，所述圆筒壳体及所述齿轮轴承的材质为合金。
本实用新型第二方面提供一种牙科手机，包括：上述第一方面提供的任意一项所述的夹头、与所述夹头机械连接的传动设备、与所述夹头可拆卸连接的治疗工具。
 有益效果
本实用新型提供一种夹头，夹头包括：圆筒壳体、内套接于圆筒壳体且与圆筒壳体可转动连接的齿轮轴承、及内套接于齿轮轴承且与齿轮轴承可滑动连接的弹力锁帽，弹力锁帽朝向圆筒壳体外部的一端与齿轮轴承相卡接，齿轮轴承的内侧壁设置有凹陷于齿轮轴承的内侧壁的限位环槽，其中，弹力锁帽位于齿轮轴承的内侧壁时处于收缩状态，弹力锁帽位于限位环槽时处于舒张状态。与现有技术相比，本方案提供的夹头包括圆筒壳体、齿轮轴承及弹力锁帽，弹力锁帽与齿轮轴承的内侧壁可滑动连接，弹力锁帽位于齿轮轴承的内侧壁时处于收缩状态，弹力锁帽沿着齿轮轴承的内侧壁滑动至限位环槽时处于舒张状态，实现对治疗工具的直接固定，如对根管锉的直接固定，实现直接传动，提高根管锉与牙科手机之间的同心度，从而提高了传动效率，具有可靠性。
 附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本实用新型实施例提供的一种夹头的结构立体图；
图2为图1的实施例提供的一种夹头的沿着A-A线的剖视结构示意图；
图3为本实用新型实施例提供的齿轮轴承的立体结构图；
图4为图3的实施例提供的齿轮轴承的沿着B-B线的剖视结构示意图；
图5为本实用新型实施例的弹力锁帽的立体结构图；
图6为图5的实施例提供的的弹力锁帽的沿着C-C线的剖视结构示意图。
 本发明的实施方式
为使得本实用新型的发明目的、特征、优点能够更加的明显和易懂，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而非全部实施例。基于本实用新型中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
由于现有技术中的牙科手机无法与根管锉之间直接固定及传动，导致牙科手机与根管锉之间的同心度差及传动效率低的技术问题。
为了解决上述的技术问题，本实用新型提供一种夹头；关于该夹头的结构具体请参考图1-6。
该夹头包括：圆筒壳体10、内套接于圆筒壳体10且与圆筒壳体10可转动连接的齿轮轴承20、及内套接于齿轮轴承20且与齿轮轴承20可滑动连接的弹力锁帽30，弹力锁帽30朝向圆筒壳体10外部的一端与齿轮轴承20相卡接，齿轮轴承20的内侧壁设置有凹陷于齿轮轴承20的内侧壁的限位环槽23，其中，弹力锁帽30位于齿轮轴承20的内侧壁时处于收缩状态，弹力锁帽30位于限位环槽23时处于舒张状态。
在本实用新型的实施例中，该夹头涉及的是牙科医疗器械的技术领域，主要应用于牙科医疗设备上，如适用于牙科手机、根管治疗仪等设备，以对一些治疗工具的安装固定，并进行直接传动。在本实施例中，夹头包括圆筒壳体10，该圆筒壳体10为具有圆柱形的圆筒侧壁11，该圆筒壳体10的两端为与外部相连通，即圆筒壳体10的两端底面为具有通孔，使得圆筒壳体10的内部与外部相通；齿轮轴承20为具有收容空间的轴承，轴承的内侧壁上设有凹陷的限位环槽23，轴承的外部设有围绕轴承固定连接的齿轮，该齿轮主要用于与壳体外部的传动部件进行传动连接，以获取驱动轴承转动的外部动力；弹力锁帽30为可收缩和展开的锁定部件，该弹力锁帽30包括：锁帽底座31、分别自锁帽底座31的边缘延伸且与所述锁帽底座31的边缘一体成型的多个弹力柱32，弹力柱32之间相互间隔且呈中心对称，即相邻的弹力柱32之间具有开口，这多个弹力柱32共同围成一个具有开口的围壁，多个弹力柱32的中间具有收容空间，同时对多个弹力柱32进行施压，可实现对安置于多个弹力柱32中间的杆体进行夹持固定，需要说明的是，该弹力锁帽30的锁帽底座31中间部位开设有底座通孔311，该底座通孔311用于对治疗工具的安装，具体的，以根管锉作为治疗工具为例，在牙科的根管治疗前，将根管锉的锉柄直接通过锁帽底座31中部的通孔后，根管锉的锉柄处于弹力锁帽30的多个弹力柱32的中间，通过对多个弹力柱32的外侧同时施加压力，使得多个弹力柱32向中心收缩，从而对根管锉进行夹持和咬定，实现根管锉的锉柄的直接安装固定，使得根管锉无需借助特定部件与弹力锁帽30之间进行固定。
进一步的，由于弹力锁帽30与齿轮轴承20的内侧壁可滑动连接，由于齿轮轴承20的内侧空间小于弹力锁帽30的多个弹力柱32的自然舒展状态，当弹力锁帽30设于齿轮轴承20内，使得弹力锁帽30的多个弹力柱32受到压力，从而使得弹力锁帽30的多个弹力柱32共同处于收缩状态，可实现对根管锉的锉柄的固定；当弹力锁帽30沿着齿轮轴承20的内侧壁滑动至限位环槽23内时，由于限位环槽23为凹陷结构，当弹力锁帽30的特定部位陷落在限位环槽23内时，弹力锁帽30处于舒张状态，可失电对根管锉的锉柄部的松开或释放，实现根管锉的更换；对于规格比较长的根管锉，可通过将根管锉的锉柄穿过弹力底座的底座通孔311后，根据实际使用需求将根管锉在夹头内进行伸缩，需要说明的是，齿轮轴承20与弹力锁帽30相对一端的底壁设有轴承通孔241，当根管锉在夹头内进行收缩调节时，根管锉的锉柄通过弹力锁帽30的锁帽底座31的底座通孔311后，穿过弹力锁帽30的多个弹力柱32围成的中部空间，且根据调节根管锉的伸缩长度，可将根管锉移动穿过齿轮轴承20的轴承通孔241，使得根管锉的锉柄从夹头的底座通孔311进入，并从夹头的轴承通孔241伸出，实现对根管锉的使用长度的调节；因此，弹力锁帽30处于舒张状态时，可实现移动根管锉，如对根管锉的更换或调节根管锉的伸缩长度。通过本实施例的上述限定，可使得夹头与根管锉之间的直接固定，及直接传动，提高根管锉与牙科手机之间的同心度，从而提高了传动效率，具有可靠性。需要说明的是，上述是以根管锉作为治疗工具的示例性说明，在实际应用中，治疗工具还可为其他牙科治疗工具，本实施例对此不做进一步限定。
在本实用新型的实施例中，请参阅图3-4，齿轮轴承20包括：具有收容空间的轴承主体21、与轴承主体21的外侧壁固定连接的齿轮部22，齿轮部22与夹头的外部目标传动部件传动连接，用于夹头外部的目标传动部件与齿轮部22之间的传动运动，夹头外部的目标传动部件与齿轮部22的传动连接转化为轴承主体21位于圆筒壳体10内的转动运动，即夹头外部的目标传动部件与齿轮部22的传动连接对应的传动运动可转化为轴承主体21位于圆筒壳体10内的转动运动。具体的，轴承主体21为具有收容空间的轴承，轴承主体21的内侧壁上设有凹陷的限位环槽23，轴承的外部设有围绕轴承固定连接的齿轮，该齿轮主要用于与夹头外部牙科医疗设备的传动部件进行传动连接，通过传动连接对应的传动运动转换为齿轮轴承20的转动运动，以实现外部动力驱动齿轮轴承20转动。优选的，轴承主体21的长度为8.70mm，轴承主体21的半径为2mm，限位环槽23的宽度为0.75mm，限位环槽23的直径为3.50mm，齿轮轴承20的内侧壁的直径为2.97mm。此外，轴承主体21远离弹力锁帽30的一端设有轴承封闭环24，该轴承封闭环24的中部开设有轴承通孔241，该轴承通孔241可用于目标治疗工具的穿过至孔外，实现调节目标治疗工具的长度。
在本实用新型的实施例中，请参阅图5-6，弹力锁帽30包括：锁帽底座31、分别自锁帽底座31向垂直方向延伸形成的相互间隔且呈中心对称的多个弹力柱32、形成于每个弹力柱32靠近锁帽底座31一端的凸起部22，凸起部22与齿轮轴承20相卡接，凸起部22与每个弹力柱32远离锁帽底座31一端设有凸起檐24，其中，多个凸起檐24相互配合与轴承主体21的内侧壁相抵接时，弹力锁帽30处于收缩状态，多个凸起檐24相互配合限位于与轴承主体21的内侧壁上的限位环槽23时，弹力锁帽30处于舒张状态。具体的，弹力锁帽30为可收缩和展开的锁定部件，弹力柱32之间相互间隔且呈中心对称，即相邻的弹力柱32之间具有开口，这多个弹力柱32共同围成具有开口的围壁，多个弹力柱32的中间具有收容空间；当多个弹力柱32受到压迫时，可实现对安置于多个弹力柱32中间的杆物件体进行夹持固定。需要说明的是，该弹力锁帽30的锁帽底座31中间部位开设有底座通孔311，该底座通孔311与多个弹力32柱围成的收容空间相通，该底座通孔311用于对治疗工具的安装。以根管锉作为治疗工具为例，在实际应用中，在牙科的根管治疗前，需要对目标根管锉进行安装或更换根管锉，按压弹力锁帽30的暴露于圆筒壳体10外部的锁帽底座31，使得弹力锁帽30沿着的齿轮轴承20的内侧壁滑动，弹力锁帽30的凸起檐24滑动至齿轮轴承20的限位环槽23时，弹力锁帽30处于舒张状态，将根管锉的锉柄直接通过锁帽底座31中部的通孔后，根管锉的锉柄处于弹力锁帽30的多个弹力柱32的中间；本实施例可在齿轮轴承20的内部设置至少一个弹性伸缩部件，使得弹力锁帽30与齿轮轴承20之间具有弹力，当停止对弹力锁帽30的锁帽底座31的施压时，使得弹力锁帽30迫于弹性部件40的压力从限位环槽23中脱离并沿着齿轮轴承20的内侧壁向锁帽底座31朝向外部的方向滑动，使得多个弹力柱32的外侧同时收到齿轮轴承20的内侧壁施加的压力，使得多个弹力柱32向中心收缩，从而对根管锉进行夹持和咬定。通过上述特征，可实现根管锉的锉柄的直接安装固定，使得根管锉无需借助特定部件与弹力锁帽30之间进行固定。优选的，每个弹力柱32的高度为3.88mm，锁帽底座31的厚度为1.20mm。
在本实用新型的实施例中，圆筒壳体10包括：圆筒侧壁11、分别沿着圆筒侧壁11两端的端口向中心延伸的两个环形限位部12、及开设于圆筒侧壁11上的机动通孔13，齿轮轴承20内套接于圆筒侧壁11，齿轮部22与圆筒侧壁11一端的环形相位部相卡接，夹头的外部目标传动部件穿过机动通孔13与齿轮部22传动连接。该圆筒壳体10为具有圆柱形的圆筒侧壁11，该圆筒壳体10的两端为与外部相连通，即圆筒壳体10的两端底面为具有通孔，使得圆筒壳体10的内部与外部相通，优选的，圆筒轴承的长度为6.10mm，环形限位部12的厚度为1.1mm，圆筒侧壁11的半径为3mm，环形限位部12沿着半径方向上的延伸厚度为1mm，圆筒侧壁11两端的通孔半径为2mm。
在实施例中，夹头还包括弹性部件40，弹性部件40内套接于齿轮轴承20，且弹性部件40的一端与多个弹力柱32相抵顶，轴承主体21远离弹力锁帽30的一端设有轴承封闭环24，弹性部件40的另一端与轴承封闭环24相抵顶，弹性部件40使得弹力锁帽30与齿轮轴承20之间弹性滑动连接。优选的，该弹性部件40可为弹簧，但不限于此；通过将弹簧内嵌于齿轮轴承20内，使得弹簧与齿轮轴承20的轴承封闭环24和弹力锁帽30相抵顶，实现弹力锁帽30与齿轮轴承20之间的弹性滑动连接。
在本实用新型的实施例中，圆筒壳体10及齿轮轴承20的材质为合金。具体可通过合金电镀，这种材质的重量较轻，耐腐蚀性，应用广泛，容易加工制造，且在软硬程度上是具有较大的硬度，有效防止受到外力作用下造成损坏或变形；此外，还可通过使用不锈钢材质或其他材料加工制作得到圆筒壳体10及齿轮轴承20。弹力锁帽30也可使用该种材质，本实施例对此不做限定。通过选用合适的材质，可提高夹头的可靠性。
本实用新型提供一种夹头，夹头包括：圆筒壳体、内套接于圆筒壳体且与圆筒壳体可转动连接的齿轮轴承、及内套接于齿轮轴承且与齿轮轴承可滑动连接的弹力锁帽，弹力锁帽朝向圆筒壳体外部的一端与齿轮轴承相卡接，齿轮轴承的内侧壁设置有凹陷于齿轮轴承的内侧壁的限位环槽，其中，弹力锁帽位于齿轮轴承的内侧壁时处于收缩状态，弹力锁帽位于限位环槽时处于舒张状态。与现有技术相比，本方案提供的夹头包括圆筒壳体、齿轮轴承及弹力锁帽，弹力锁帽与齿轮轴承的内侧壁可滑动连接，弹力锁帽位于齿轮轴承的内侧壁时处于收缩状态，弹力锁帽沿着齿轮轴承的内侧壁滑动至限位环槽时处于舒张状态，实现对治疗工具的直接固定，如对根管锉的直接固定，实现直接传动，提高根管锉与牙科手机之间的同心度，从而提高了传动效率，具有可靠性。
本实用新型还提供一种牙科手机，包括：上述实施例提供的任意一项所述的夹头、与所述夹头机械连接的传动设备、与所述夹头可拆卸连接的治疗工具。具体的，该夹头可安装在牙科手机或根管治疗仪等；优选的，本实施例以牙科手机为例该传动设备为牙科手机或根管治疗仪中的传动设备，该穿的设备具有收容空间的设备壳体，该设备壳体内部可包含电机，以进行对夹头内部的目标部件进行驱动，如夹头所包含的齿轮轴承。夹头用于与治疗工具可拆卸安装和固定，需要说明的是，夹头与治疗工具之间是通过直接安装固定的，可适应治疗工具的无夹持柄的发展，且可提高治疗根据与夹头、牙科手机之间的同心度，进而提高传动效率。治疗工具可为根管锉等相类似的工具，本实施例对此不做进一步的限定。
在本实用新型所提供的几个实施例中，应该理解到，所揭露的结构，可以通过其它的方式实现。例如，以上所描述的实施例仅仅是示意性的。
需要说明的是，对于前述的各方法实施例，为了简便描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本实用新型并不受所描述的动作顺序的限制，因为依据本实用新型，某些步骤可以采用其它顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定都是本实用新型所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其它实施例的相关描述。
以上为对本实用新型所提供的一种夹头及牙科手机的描述，对于本领域的技术人员，依据本实用新型实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本实用新型的限制。

Claims (7)

  1. 一种夹头，其特征在于，夹头包括：圆筒壳体、内套接于所述圆筒壳体且与所述圆筒壳体可转动连接的齿轮轴承、及内套接于所述齿轮轴承且与所述齿轮轴承可滑动连接的弹力锁帽，所述弹力锁帽朝向所述圆筒壳体外部的一端与所述齿轮轴承相卡接，所述齿轮轴承的内侧壁设置有凹陷于所述齿轮轴承的内侧壁的限位环槽，其中，所述弹力锁帽位于所述齿轮轴承的内侧壁时处于收缩状态，所述弹力锁帽位于所述限位环槽时处于舒张状态。
  2. 如权利要求1所述的夹头，其特征在于，所述齿轮轴承包括：具有收容空间的轴承主体、与所述轴承主体的外侧壁固定连接的齿轮部，所述齿轮部与所述夹头的外部目标传动部件传动连接，所述夹头外部的目标传动部件与所述齿轮部的传动连接转化为所述轴承主体位于所述圆筒壳体内的转动运动。
  3. 如权利要求2所述的夹头，其特征在于，所述弹力锁帽包括：锁帽底座、分别自所述锁帽底座向垂直方向延伸形成的相互间隔且呈中心对称的多个弹力柱、形成于每个所述弹力柱靠近所述锁帽底座一端的凸起部，所述凸起部与所述齿轮轴承相卡接，所述凸起部与每个所述弹力柱远离所述锁帽底座一端设有凸起檐，其中，多个所述凸起檐相互配合与所述轴承主体的内侧壁相抵接时，所述弹力锁帽处于收缩状态，多个所述凸起檐相互配合限位于与所述轴承主体的内侧壁上的限位环槽时，所述弹力锁帽处于舒张状态。
  4. 如权利要求2所述的夹头，其特征在于，所述圆筒壳体包括：圆筒侧壁、分别沿着所述圆筒侧壁两端的端口向中心延伸的两个环形限位部、及开设于所述圆筒侧壁上的机动通孔，所述齿轮轴承内套接于所述圆筒侧壁，所述齿轮部与所述圆筒侧壁一端的环形相位部相卡接，所述夹头的外部目标传动部件穿过所述机动通孔与所述齿轮部传动连接。
  5. 如权利要求3所述的夹头，其特征在于，所述夹头还包括弹性部件，所述弹性部件内套接于所述齿轮轴承，且所述弹性部件的一端与所述多个弹力柱相抵顶，所述轴承主体远离所述弹力锁帽的一端设有轴承封闭环，所述弹性部件的另一端与所述轴承封闭环相抵顶，所述弹性部件使得所述弹力锁帽与齿轮轴承之间弹性滑动连接。
  6. 如权利要求1所述的夹头，其特征在于，所述圆筒壳体及所述齿轮轴承的材质为合金。
  7. 一种牙科手机，其特征在于，包括：如权利要求1-6任意一项所述的夹头、与所述夹头机械连接的传动设备、与所述夹头可拆卸连接的治疗工具。
PCT/CN2020/123598 2020-10-26 2020-10-26 一种夹头及牙科手机 WO2022087773A1 (zh)

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Citations (9)

* Cited by examiner, † Cited by third party
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EP0273259A1 (de) * 1986-12-22 1988-07-06 Siemens Aktiengesellschaft Spannvorrichtung für insbesondere zahnärztliche Werkzeuge
EP0647437A1 (en) * 1993-10-06 1995-04-12 Yechiel Cohen Clamping device particularly useful for dental handpieces
CN2318991Y (zh) * 1997-10-21 1999-05-19 张福东 牙钻的钻针装卸机构
WO2002085238A1 (en) * 2001-04-18 2002-10-31 The Timken Company Chuck for rotary tools
CN202437371U (zh) * 2012-01-18 2012-09-19 余礼建 牙科手机夹头及与其匹配的车针
US20140154642A1 (en) * 2012-11-30 2014-06-05 Minebea Co., Ltd. Concentricity-optimized tool clamping system for dental angled handpieces and dental turbines
CN105395260A (zh) * 2015-12-10 2016-03-16 佛山市德克医疗器械有限公司 用于按压式牙科高速涡轮手机的组装结构及芯轴组件
CN208301739U (zh) * 2018-01-22 2019-01-01 东莞市东森医疗设备有限公司 一种牙科手机按压轴
CN109998704A (zh) * 2019-04-07 2019-07-12 佛山市多易美医疗器材有限公司 一种按压轴

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0273259A1 (de) * 1986-12-22 1988-07-06 Siemens Aktiengesellschaft Spannvorrichtung für insbesondere zahnärztliche Werkzeuge
EP0647437A1 (en) * 1993-10-06 1995-04-12 Yechiel Cohen Clamping device particularly useful for dental handpieces
CN2318991Y (zh) * 1997-10-21 1999-05-19 张福东 牙钻的钻针装卸机构
WO2002085238A1 (en) * 2001-04-18 2002-10-31 The Timken Company Chuck for rotary tools
CN202437371U (zh) * 2012-01-18 2012-09-19 余礼建 牙科手机夹头及与其匹配的车针
US20140154642A1 (en) * 2012-11-30 2014-06-05 Minebea Co., Ltd. Concentricity-optimized tool clamping system for dental angled handpieces and dental turbines
CN105395260A (zh) * 2015-12-10 2016-03-16 佛山市德克医疗器械有限公司 用于按压式牙科高速涡轮手机的组装结构及芯轴组件
CN208301739U (zh) * 2018-01-22 2019-01-01 东莞市东森医疗设备有限公司 一种牙科手机按压轴
CN109998704A (zh) * 2019-04-07 2019-07-12 佛山市多易美医疗器材有限公司 一种按压轴

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