CN201798776U - Drill bit locking device and drill bit - Google Patents
Drill bit locking device and drill bit Download PDFInfo
- Publication number
- CN201798776U CN201798776U CN 201020550035 CN201020550035U CN201798776U CN 201798776 U CN201798776 U CN 201798776U CN 201020550035 CN201020550035 CN 201020550035 CN 201020550035 U CN201020550035 U CN 201020550035U CN 201798776 U CN201798776 U CN 201798776U
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- CN
- China
- Prior art keywords
- drill bit
- boss
- wall
- locking device
- projection
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- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a drill bit locking device and drill bit comprising a boss (1) provided with a through hole. A bearing (8) and a support body (12) used for supporting the bearing (8) are disposed on the inner wall of the small cylinder disposed on the boss. A locking sleeve (2) is sleeved on the boss, besides, the upper inner wall of the locking sleeve (2) is provided with a first protrusion (5), and the lower inner wall is provided with a second protrusion (3). A spring (9) is disposed between the second protrusion (3) and the upper bottom surface (10) of the boss. A press sheet (6) and the outer wall (7) of the top of the small cylinder disposed on the boss are in a threaded connection, and the press sheet (6) can be used to press the first protrusion (5). Holes with different sizes are disposed on the inner wall of the small cylinder corresponding to the second protrusion (3) and the support body (12). The holes can form stepped holes (11), in which are disposed steel balls (4). By using the utility model, the locking and the loosening are easy, convenient, and the locking is firm, the safety performance is good.
Description
Technical field
This utility model relates to the bone drill motor that a kind of surgery uses, and relates in particular to wherein locking device and transmission pole.
Background technology
In surgical operation, drill for craniotomy, milling cutter and abrasive drilling are the cranium instruments of opening comparatively commonly used.Drill for craniotomy comprises main frame, decelerator, locking bed and drill bit, and drill bit comprises the transmission pole at forward blade part and rear portion.Drilling has the transmission pole drill bit, and locking bed is by being threadedly connected to the front portion of decelerator, and the power output that drill bit passes locking bed and decelerator is joined.The effect of locking bed is the chucking transmission pole, prevents that drill bit comes off when work.Existing locking equipment is to lock by trip, exists inconvenience, not wield shortcoming are installed.
The utility model content
The purpose of this utility model provides a kind of drill bit locking device and drill bit easy to use.
To achieve these goals, by the following technical solutions:
A kind of drill bit locking device, it is characterized in that: described device comprises: the boss with through hole, described boss top small cylinder inwall is provided with bearing and in order to the supporter of spring bearing, described boss also is with lock sleeve, the upper inside wall of lock sleeve is provided with first projection, and lower inner wall is provided with second projection; Be provided with spring between the upper bottom surface of second projection and boss; Tabletting is connected with the outer wall thread at the top of the top small cylinder of boss and pushes down first projection; With on the small cylinder inwall of the second protruding corresponding position and supporter be provided with the hole that varies in size, form shoulder hole, be provided with steel ball in the described shoulder hole.
In order to make that transmission pole can be stressed even, described bearing is two, lays respectively at the top of outer wall below and upper bottom surface.
In order to guarantee the fixing of bearing and compressing member, described upper bottom surface is provided with the upper bottom surface inner thread and is connected the compressing member that is used to hold out against bearing and supporter.
In order to guarantee the even running of transmission pole, described bearing is two, lays respectively at the top of outer wall below and compressing member.
For convenience of connection reducer, the inwall of described boss below large cylinder is provided with female thread.
The drill bit that a kind of and above-mentioned drill bit locking device cooperates comprises the transmission pole at forward blade part and rear portion, and it is characterized in that: described transmission pole is provided with groove.
Adopt this structure, when needs insert transmission pole, only need lock sleeve is pressed down, at this moment, second projection is left steel ball, and the body of rod that steel ball runs into transmission pole outwards rolls out.Transmission pole unclamps lock sleeve after arriving assigned address, because the effect of spring, lock sleeve rises, and second projection props up steel ball and inwardly moves, and blocks the draw-in groove on the transmission pole, and transmission pole is fixed.This locking mode, lock with unclamp simple, convenient, and when locking is more firm, security performance is better.
Description of drawings
Fig. 1 is the structural representation of this utility model embodiment;
Fig. 2 is the structural representation of drill bit among this utility model embodiment.
The specific embodiment
Below in conjunction with drawings and the specific embodiments this utility model is further described:
As shown in Figures 1 and 2:
A kind of drill bit comprises the transmission pole at forward blade part and rear portion, and transmission pole 13 is provided with groove 14.
A kind of drill bit locking device comprises: have the boss 1 of through hole, the inwall of boss top small cylinder is provided with bearing 8, and bearing 8 is two, lays respectively at the top of outer wall 7 belows and compressing member 15.Be provided with supporter 12 between two bearings 8.Upper bottom surface 10 is provided with and is connected the compressing member 15 that is used to hold out against bearing 8 and supporter 12 with the upper bottom surface inner thread.When two bearings can guarantee effectively that transmission pole rotates steadily, reduce heating, the existence of supporter 12 has increased the firmness between the bearing, difficult drop-off.
Boss also is with lock sleeve 2, and the upper inside wall of lock sleeve 2 is provided with first projection 5, and lower inner wall is provided with second projection 3; Be provided with spring 9 between the upper bottom surface 10 of second projection 3 and boss; Tabletting 6 is threaded with the outer wall 7 at the top of the top small cylinder of boss and pushes down first projection 5; With on the small cylinder inwall of second protruding 3 corresponding positions and supporter 12 be provided with the hole that varies in size, form shoulder hole 11, be provided with steel ball 4 in the shoulder hole 11.Aperture on the small cylinder inwall is greater than the diameter of steel ball 4, and the aperture on the supporter 12 is less than the diameter of steel ball 4.
The position of the transmission pole 13 correspondence shoulder holes 11 of drill bit is provided with groove 14.The inwall of boss 1 below large cylinder is provided with female thread.In this embodiment, the number of shoulder hole 11 and steel ball 4 is respectively two.As a kind of distortion that is equal to, can steel ball and shoulder hole be set to three, like this, the effect of locking will be better.
The above; only be embodiment of the present utility model; be not to any pro forma restriction of the present utility model; any those skilled in the art; in the scope that does not break away from technical solutions of the utility model; when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations; in every case be not break away from the technical solutions of the utility model content; to any simple modification, equivalent variations and modification that above embodiment did, all still belong to the scope of technical solutions of the utility model protection according to this utility model technical spirit.
Claims (5)
1. drill bit locking device, it is characterized in that: described device comprises: the boss (1) with through hole, described boss top small cylinder inwall is provided with bearing (8) and in order to the supporter (12) of spring bearing (8), described boss also is with lock sleeve (2), the upper inside wall of lock sleeve (2) is provided with first projection (5), and lower inner wall is provided with second projection (3); Be provided with spring (9) between the upper bottom surface (10) of second projection (3) and boss; Tabletting (6) is threaded with the outer wall (7) at the top of the top small cylinder of boss and pushes down first projection (5); With on the small cylinder inwall of second projection (3) corresponding position and supporter (12) be provided with the hole that varies in size, form shoulder hole (11), be provided with steel ball (4) in the described shoulder hole (11).
2. drill bit locking device as claimed in claim 2 is characterized in that: described upper bottom surface (10) is provided with and is connected the compressing member (15) that is used to hold out against bearing (8) and supporter (12) with the upper bottom surface inner thread.
3. drill bit locking device as claimed in claim 3 is characterized in that: described bearing (8) is two, lays respectively at the top of outer wall (7) below and compressing member (15).
4. as the arbitrary described drill bit locking device of claim 1 to 3, it is characterized in that: the inwall of described boss (1) below large cylinder is provided with female thread.
5. drill bit that cooperates with the arbitrary described drill bit locking device of claim 1 to 4 comprises the transmission pole at forward blade part and rear portion, and it is characterized in that: described transmission pole (13) is provided with groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020550035 CN201798776U (en) | 2010-09-30 | 2010-09-30 | Drill bit locking device and drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020550035 CN201798776U (en) | 2010-09-30 | 2010-09-30 | Drill bit locking device and drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201798776U true CN201798776U (en) | 2011-04-20 |
Family
ID=43868291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020550035 Expired - Lifetime CN201798776U (en) | 2010-09-30 | 2010-09-30 | Drill bit locking device and drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201798776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972157A (en) * | 2010-09-30 | 2011-02-16 | 重庆润泽医疗器械有限公司 | Drill bit locking device and drill bit |
| WO2012041132A1 (en) * | 2010-09-30 | 2012-04-05 | 重庆润泽医疗器械有限公司 | Drill head locking apparatus and drill head |
| CN113752815A (en) * | 2021-11-10 | 2021-12-07 | 北京胜能能源科技有限公司 | Steel ball tensioning type locking mechanism and size design method thereof |
-
2010
- 2010-09-30 CN CN 201020550035 patent/CN201798776U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972157A (en) * | 2010-09-30 | 2011-02-16 | 重庆润泽医疗器械有限公司 | Drill bit locking device and drill bit |
| WO2012041144A1 (en) * | 2010-09-30 | 2012-04-05 | 重庆润泽医疗器械有限公司 | Drill bit locking device and drill bit |
| WO2012041132A1 (en) * | 2010-09-30 | 2012-04-05 | 重庆润泽医疗器械有限公司 | Drill head locking apparatus and drill head |
| CN113752815A (en) * | 2021-11-10 | 2021-12-07 | 北京胜能能源科技有限公司 | Steel ball tensioning type locking mechanism and size design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110420 Effective date of abandoning: 20111221 |