CN208772494U - A kind of anti-loosening locking drill chuck - Google Patents
A kind of anti-loosening locking drill chuck Download PDFInfo
- Publication number
- CN208772494U CN208772494U CN201821602664.5U CN201821602664U CN208772494U CN 208772494 U CN208772494 U CN 208772494U CN 201821602664 U CN201821602664 U CN 201821602664U CN 208772494 U CN208772494 U CN 208772494U
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- China
- Prior art keywords
- nut sleeve
- screw
- housing
- elastic slice
- groove
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- Drilling And Boring (AREA)
Abstract
The utility model provides a kind of anti-loosening locking drill chuck, which solve the lower technical problems of existing drill chuck security performance and efficiency, it includes drill body, clamping jaw, screw, nut sleeve, bearing, bearing gasket, elastic slice, housing and rear cover, three clamping jaws are respectively arranged in three be uniformly distributed circumferentially the inclined hole on drill body, screw is used with clamping jaw and is threadedly coupled, nut sleeve is interference fitted on screw, elastic slice is arranged in nut sleeve, housing and nut sleeve cooperation, housing rotation drives nut sleeve rotation, nut sleeve drives screw rotation, and screw drives clamping jaw mobile；Outer casing inner wall is equipped with groove, and the lower end of nut sleeve is equipped with the locating detent to match with groove, and the utility model can be widely applied to drilling tool technical field.
Description
Technical field
The utility model relates to drilling tool technical fields, more particularly, to a kind of anti-loosening locking drill chuck.
Background technique
Drill chuck is one of the key fitment of Power Tools Industries and machine industry, is widely used in electric hand drill, drilling machine etc.
On, match with electric drill, for clamping a kind of tool of the work heads such as drilling tool, existing drill chuck is generally by drill body, clamping jaw, silk
Female, housing composition, clamping jaw are separately mounted in the equal part inclined hole of drill body, and screw is mounted in the screw slot of drill body, screw and folder
The screw thread of pawl forms thread transmission, and housing and screw, drill body are fixedly connected, and there are threaded hole or taper hole in drill body rear portion, installation
In use, the threaded hole or taper hole at drill body rear portion and the transmission axis connection of power equipment, driving drill body is driven when transmission shaft rotates
Clamping jaw and folded tool rotate synchronously；However when the drill chuck working time, due to vibrating or impacting, drill chuck easily loosens, seriously
Working efficiency is influenced, safety is poor.
Summary of the invention
The utility model technical problem lower aiming at existing drill chuck security performance and efficiency, provides a kind of safety
Performance and the higher anti-loosening locking drill chuck of efficiency.
For this purpose, the utility model includes drill body, clamping jaw, screw, nut sleeve, bearing, bearing gasket, elastic slice, housing and rear cover,
Three clamping jaws are respectively arranged in three be uniformly distributed circumferentially the inclined hole on drill body, and screw is used with clamping jaw and is threadedly coupled,
Nut sleeve is interference fitted on screw, and elastic slice is arranged in nut sleeve, and housing and nut sleeve cooperation, housing rotation drive nut sleeve
Rotation, nut sleeve drive screw rotation, and screw drives clamping jaw mobile；Outer casing inner wall is equipped with groove, the lower end of nut sleeve be equipped with
The locating detent that groove matches.
Preferably, groove is circumferentially uniformly arranged 1-6 along outer casing inner wall, and the number of locating detent is identical as groove.
Preferably, elastic slice is equipped with positioning protrusion, and nut sleeve circumferential wall is equipped with driving mouth, and driving mouth is determined on elastic slice
Position protrusion is corresponding.
Preferably, it is provided with circlip in the jump-ring slot of jacket internal, housing is fixed on drill body by circlip.
The utility model structure is simple, by the way that groove is arranged in outer casing inner wall, and setting and groove phase on nut sleeve
The locating detent matched, when drill chuck in a free state, by be fixed in nut sleeve elastic slice driving operating, at this time on nut sleeve
Locating detent be in vacant state；When being in locking state, the locating detent on nut sleeve is entered in the groove of housing, is increased
The release torque of nut sleeve and outer inner room after locking, thus guarantee that locking state is more reliable, it is practical and convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of elastic slice；
Fig. 3 is the structural schematic diagram of nut sleeve；
Fig. 4 is the main view of nut sleeve；
Fig. 5 is the top view of nut sleeve；
Fig. 6 is the top view of housing；
Fig. 7 is the schematic cross-sectional view of housing；
The combination schematic diagram of nut sleeve and housing when Fig. 8 is free state；
The top view of the combination of nut sleeve and housing when Fig. 9 is free state；
The combination schematic diagram of nut sleeve and housing when Figure 10 is locking state；
The top view of the combination of nut sleeve and housing when Figure 11 is locking state.
Symbol description in figure:
1. drill body；2. clamping jaw；3. screw；4. nut sleeve；5. bearing；6. bearing gasket；7. elastic slice；8. housing；9. rear cover；
10. circlip；11. positioning protrusion；12. driving mouth；13. groove；14. locating detent.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawings.
As shown in Figure 1, the utility model includes drill body 1, clamping jaw 2, screw 3, nut sleeve 4, bearing 5, bearing gasket 6, elastic slice
7, housing 8 and rear cover 9, three clamping jaws 2 are respectively arranged in three be uniformly distributed circumferentially the inclined hole on drill body 1, screw 3 with
Clamping jaw 2 is using being threadedly coupled, and the screw thread of screw 3 and clamping jaw 2 forms thread transmission, and bearing 5 is located at the branch of 3 rear end face of screw
It supports in slot, bearing gasket 6 is set between bearing 5 and the end face of drill body 1；Nut sleeve 4 is interference fitted on screw 3, housing 8 and screw
4 cooperation of set, the rotation of housing 8 drive nut sleeve 4 to rotate, and nut sleeve 4 drives screw 3 to rotate, and screw 3 drives clamping jaw 2 mobile；Rear cover
9 are arranged in housing 8 rear portion, and with 8 clearance fit of housing, rear cover 9 is fixed on drill body 1, and rear cover 9 is not rotated relative to drill body 1.
Elastic slice 7 is arranged in nut sleeve 4, as shown in Fig. 2, elastic slice 7 is equipped with positioning protrusion 11, such as Fig. 3, Fig. 4 and Fig. 5 institute
Show, 4 circumferential wall of nut sleeve is equipped with driving mouth 12, and driving mouth 12 is corresponding with the positioning protrusion 11 on elastic slice 7, elastic slice 7 and axis
Support pad 6 cooperates, and circlip 10 is provided in the jump-ring slot inside housing 8, and housing 8 is fixed on drill body 1 by circlip 10.
As shown in Figure 6 and Figure 7, housing 8 is circumferentially evenly arranged with several grooves 13 along inner wall, and the lower end of nut sleeve 4 is set
The number of the locating detent 14 for having several to match with groove 13, locating detent 14 is identical as groove 13, as shown in Figure 8 and Figure 9, when
Drill chuck in a free state, is operated, at this time the locating detent 14 on nut sleeve 4 by the driving of elastic slice 7 being fixed in nut sleeve 4
In vacant state；As shown in Figure 10 and Figure 11, when being in locking state, the locating detent 14 on nut sleeve 4 is rotated into
In the groove 13 of housing 8, nut sleeve 4 and housing 8 are locked, are effectively increased the release after locking between nut sleeve 4 and housing 8
Torque, to guarantee the reliability of locking state, security performance is preferable.
Only as described above, only specific embodiment of the utility model, when the utility model cannot be limited with this
The range of implementation, therefore the displacement of its equivalent assemblies, or according to equivalent changes and modifications made by the utility model patent protection scope,
It should still belong to the scope that the utility model claims book is covered.
Claims (4)
1. a kind of anti-loosening locking drill chuck comprising drill body, clamping jaw, screw, nut sleeve, bearing, bearing gasket, elastic slice, housing and
Rear cover, three clamping jaws are respectively arranged in three be uniformly distributed circumferentially the inclined hole on the drill body, the screw with
Using being threadedly coupled, the nut sleeve is interference fitted on the screw clamping jaw, and the elastic slice is arranged in the nut sleeve
In, the housing and nut sleeve cooperation, the housing rotation drive the nut sleeve to rotate, described in the nut sleeve drive
Screw rotation, the screw drive the clamping jaw mobile；It is characterized in that, the outer casing inner wall is equipped with groove, the nut sleeve
Lower end be equipped with the locating detent that matches with the groove.
2. anti-loosening locking drill chuck according to claim 1, it is characterised in that the groove is circumferential along the outer casing inner wall
1-6 are uniformly arranged, the number of the locating detent is identical as the groove.
3. anti-loosening locking drill chuck according to claim 1, it is characterised in that the elastic slice is equipped with positioning protrusion, described
Nut sleeve circumferential wall is equipped with driving mouth, and the driving mouth is corresponding with the positioning protrusion on the elastic slice.
4. anti-loosening locking drill chuck according to claim 1, it is characterised in that be arranged in the jump-ring slot of the jacket internal
There is circlip, the housing is fixed on the drill body by the circlip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821602664.5U CN208772494U (en) | 2018-09-29 | 2018-09-29 | A kind of anti-loosening locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821602664.5U CN208772494U (en) | 2018-09-29 | 2018-09-29 | A kind of anti-loosening locking drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208772494U true CN208772494U (en) | 2019-04-23 |
Family
ID=66161311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821602664.5U Active CN208772494U (en) | 2018-09-29 | 2018-09-29 | A kind of anti-loosening locking drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208772494U (en) |
-
2018
- 2018-09-29 CN CN201821602664.5U patent/CN208772494U/en active Active
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| GR01 | Patent grant |