CN201055920Y - Novel self-locking type clamping head of hand-locking drill - Google Patents
Novel self-locking type clamping head of hand-locking drill Download PDFInfo
- Publication number
- CN201055920Y CN201055920Y CNU2007201112565U CN200720111256U CN201055920Y CN 201055920 Y CN201055920 Y CN 201055920Y CN U2007201112565 U CNU2007201112565 U CN U2007201112565U CN 200720111256 U CN200720111256 U CN 200720111256U CN 201055920 Y CN201055920 Y CN 201055920Y
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- CN
- China
- Prior art keywords
- nut
- drill
- rotary sleeve
- locking
- drill body
- Prior art date
- 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 - Fee Related
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Abstract
The utility model provides a novel self-locking hand-tight drill clamping head, which comprises a drill body, a clamping claw, rotary sleeve for axial positioning, a nut, and the clamping claw is in thread connection with the nut; the drill body front outer surface is connected with a immobile center gear, the drill clamping head is also arranged with a plurality of planet gears connected with the nut and matched with the center gear between the rotary sleeve and the drill body, the rotary sleeve inner surface is arranged with teeth matched with planet gears; the nut is connected with a ring-shaped element with spring leaf, a washer is arranged between the nut and the drill body at the nut rear side, the washer lateral surface is arranged with a dental groove, and the spring leaf tail end is inserted into the dental groove. The utility model has rational structure, which can obtain higher clamping force through coordination of the rotary sleeve, the planet gears, and the nut, and realize self-locking function through the coordination of the spring leaf and the washer dental groove, thereby making the drill retained by the clamping claw not easy to loose, slip and fall even under the impact load effect.
Description
Technical field
The utility model relates to a kind of drill chuck, relates in particular to a kind of for example drill chuck on drilling machine, the electric drill of machining equipment and electric tool that is installed in.
Background technology
In the prior art, be provided with drill body, jaw, nut, rotatable rotary cover in the hand fastening drill clutch, rotary sleeve axially is positioned, three jaws are separately positioned in three inclined holes that are distributed on the drill body, adopt between nut and the jaw and be threaded, thereby driving nut rotation drive jaw by the operation rotary sleeve passes in and out in inclined hole to clamp or the drilling tool that gets loose, the shortcoming of these drill chucks is: under the load that the is hit effect, the drill bit of jaw clamping is easily loosening to skid even comes off, and is difficult to keep the continuity of processing.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of loosening novel self-locking type clamping head of hand-locking drill that skids that is difficult under impact loading.For this reason, the utility model by the following technical solutions: comprise rotary sleeve, the nut of drill body, jaw, axial location, jaw is connected with nut thread; The forward outer surface of described drill body is connected with motionless central gear, and described drill chuck also is provided with the planetary gears that are connected with nut some and that central gear cooperates between rotary sleeve and drill body, and the inner surface of described rotary sleeve is provided with the tooth that cooperates with planetary gear; Described nut is connected with the round element of band spring leaf, is provided with packing ring between the drill body of described nut and rear nut, and the side of described packing ring is provided with teeth groove, and the end of described spring leaf is inserted in the teeth groove.Owing to adopt the technical solution of the utility model, the utility model is rational in infrastructure, can obtain higher clamping force by the cooperation of rotary sleeve, planetary gear and nut, and cooperating by spring leaf and packing ring teeth groove, realize auto-lock function, even make to be subjected to impact loading, the drill bit of jaw clamping still is difficult for loosening skidding and comes off.
Description of drawings
Fig. 1 partly cuts open schematic diagram for a kind of embodiment of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the explosive view of Fig. 1.
Fig. 5 is the partial exploded view of embodiment shown in Figure 1.
The specific embodiment
With reference to accompanying drawing.The utility model comprises rotary sleeve 2, the nut 3 of drill body 1, jaw 4, axial location, and jaw is connected with nut thread; The forward outer surface of described drill body is connected with motionless central gear 100, described drill chuck also is provided with the planetary gears that are connected with nut 7 some and that central gear cooperates between rotary sleeve and drill body, the inner surface of described rotary sleeve is provided with the tooth 21 that cooperates with planetary gear; Described nut is connected with the round element 9 of band spring leaf 91, is provided with packing ring 5 between the drill body of described nut and rear nut, and the side of described packing ring is provided with teeth groove 51, and the end of described spring leaf is inserted in the teeth groove.
Described central gear 100 can be a direct forming at a circle tooth on drill body surface, and is connected on the drill body in the mode of integral type, and described central gear 100 also can be an independently part and being connected with drill body.
The central shaft 71 of described planetary gear 7 is connected on the nut, and realize being connected of planetary gear 7 and nut with this, as shown in the figure, described nut is provided with the mounting groove 31 of planetary gear and central shaft thereof, described planetary gear and central shaft thereof are installed on this, mounting groove is empty thoroughly with respect to the position of gear, and like this, planetary gear can be connected with a joggle to cooperate and can be connected with a joggle with central gear and cooperate with the tooth 21 of rotary sleeve inner surface.Described planetary gear also can be installed on the tooth rest, and tooth rest is connected with nut, and realizes being connected of planetary gear 7 and nut with this.Also can be provided with the tooth that cooperates with planetary gear on the described nut, realize being connected with planetary.
Planetary quantity described in the utility model is 3, circumferentially evenly is provided with along drill chuck.
The technical solution of the utility model is applicable to single cover hand fastening drill clutch, also applicable to two covers or overlap hand fastening drill clutch more, present embodiment is an example with two cover hand fastening drill clutch, the back cover that drawing reference numeral 6 is moved for the drill body relatively that is provided with the rotary sleeve rear, drawing reference numeral 10 is the circle of one between nut back end face and a packing ring ball, correspondingly the front end face of packing ring is provided with ball grooves, drawing reference numeral 11 is the collar at front end qualification rotary sleeve that is connected with drill body, and the axial qualification in the rear end of rotary sleeve can be by the cooperate realization of rotary sleeve with nut.
During clamping tool, turn rotary sleeve, tooth 21 drive planetary gears along circumferential movement, move clamping tool thereby drive nut on the central gear surface, and can import bigger torsion, make drill chuck have bigger clamping force, in clamping process, nut can be subjected to reaction force backward, make packing ring be clamped at gradually between the drill body of nut and rear nut and can't rotate, thereby realize self-locking locking relative to drill body.In the time of in working order, even drill chuck is subjected to shock loading because the cooperating of the relation of the arm of force and spring leaf and packing ring teeth groove, nut relatively drill body become flexible, the jaw maintenance is to the clamped condition of instrument.
Claims (3)
1. novel self-locking type clamping head of hand-locking drill comprises rotary sleeve, the nut of drill body, jaw, axial location, and jaw is connected with nut thread; The forward outer surface that it is characterized in that described drill body is connected with motionless central gear, described drill chuck also is provided with the planetary gears that are connected with nut some and that central gear cooperates between rotary sleeve and drill body, the inner surface of described rotary sleeve is provided with the tooth that cooperates with planetary gear; Described nut is connected with the round element of band spring leaf, is provided with packing ring between the drill body of described nut and rear nut, and the side of described packing ring is provided with teeth groove, and the end of described spring leaf is inserted in the teeth groove.
2. a kind of novel self-locking type clamping head of hand-locking drill as claimed in claim 1 is characterized in that described nut is provided with the mounting groove of planetary gear and central shaft thereof, and described planetary gear and central shaft thereof are installed on this, and mounting groove is empty thoroughly with respect to the position of gear.
3. a kind of novel self-locking type clamping head of hand-locking drill as claimed in claim 1 or 2 is characterized in that described planetary quantity is 3, circumferentially evenly is provided with along drill chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201112565U CN201055920Y (en) | 2007-06-29 | 2007-06-29 | Novel self-locking type clamping head of hand-locking drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201112565U CN201055920Y (en) | 2007-06-29 | 2007-06-29 | Novel self-locking type clamping head of hand-locking drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201055920Y true CN201055920Y (en) | 2008-05-07 |
Family
ID=39424766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201112565U Expired - Fee Related CN201055920Y (en) | 2007-06-29 | 2007-06-29 | Novel self-locking type clamping head of hand-locking drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201055920Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979256A (en) * | 2017-05-10 | 2017-07-25 | 山东科技大学 | A kind of high speed gear shaft directional rotating control device |
-
2007
- 2007-06-29 CN CNU2007201112565U patent/CN201055920Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979256A (en) * | 2017-05-10 | 2017-07-25 | 山东科技大学 | A kind of high speed gear shaft directional rotating control device |
| CN106979256B (en) * | 2017-05-10 | 2022-08-12 | 山东科技大学 | Directional rotation control device for high-speed gear shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20140629 |
|
| EXPY | Termination of patent right or utility model |