CN203305185U - Chuck - Google Patents
Chuck Download PDFInfo
- Publication number
- CN203305185U CN203305185U CN2013202483445U CN201320248344U CN203305185U CN 203305185 U CN203305185 U CN 203305185U CN 2013202483445 U CN2013202483445 U CN 2013202483445U CN 201320248344 U CN201320248344 U CN 201320248344U CN 203305185 U CN203305185 U CN 203305185U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- retaining sleeve
- chuck
- sheath
- clamping
- 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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- Gripping On Spindles (AREA)
Abstract
The utility model relates to a chuck used for containing and clamping external insertion objects. The chuck comprises a spindle, a clamping sleeve and a protective sleeve. The spindle is provided with an inner cavity which is arranged in the axial direction of the spindle. The clamping sleeve is contained and limited in the inner cavity and is provided with an inner hole which is formed in the axial direction of the spindle and used for containing and clamping a working head, the diameters of the two ends of the clamping sleeve are both larger than the diameter of the middle part of the clamping sleeve, and the middle part of the clamping sleeve is an elastic piece. The protective sleeve is arranged outside the spindle in a sleeved mode, and the protective sleeve can move between a first position which presses the clamping sleeve tightly and a second position which releases the clamping sleeve. When the chuck is used for clamping the working head, the sizes of the two ends of the clamping sleeve are large, the size of the middle part of the clamping sleeve is small, the middle part of the clamping sleeve is the elastic piece, thus, after the protective sleeve moves to tightly press the clamping sleeve, the middle part of the clamping sleeve is squeezed by the two sides and then is deformed inwards, after the inner hole of the middle part of the clamping sleeve is shrunk, the working head can be clamped, elements of the clamping structure are few, the structure is simple, the center of gravity can be guaranteed easily, and assembling is simple.
Description
Technical field
The utility model relates to a kind of chuck, particularly relate to a kind of on the power tools such as electric router, brill in order to clamp the chuck of working head.
Background technology
Fig. 1 has disclosed a kind of chuck of traditional power tool, comprises main shaft 910, and main shaft 910 overcoats have collet 920.Collet 920 has the endoporus that holds retaining sleeve 930, and retaining sleeve 930 is in order to clamp working head, as the milling cutter of electric router.The outer locking nut 940 that is arranged with of collet 920.When needs installment work, working head is packed in retaining sleeve 930, then locking nut 940 is screwed, locking nut 940 shrinks collet 920 endoporus, and then retaining sleeve 930 endoporus are diminished, and then clamps working head.
The shortcoming of above-mentioned chuck is: clamping structure is comprised of collet 920, retaining sleeve 930 and locking nut 940, cause the component structural complexity, installation procedure is many, and causes departing from of form and position tolerance to make deviation of gravity center due to a plurality of parts being installed, and produces vibrations; In addition, the clamping process of above-mentioned chuck is a process of transmitting layer by layer clamping force, but due to part foozle and part rigidity factor, can cause part and working head fit clearance inconsistent, the more important thing is and not clamping situation because the part rigidity is difficult to be out of shape, occurs.
The utility model content
Based on this, be necessary for a kind of chuck simple in structure.
A kind of chuck, be used to accommodating and clamp the outside chuck inserted, comprising:
Main shaft, have the inner chamber axially arranged along main shaft;
Retaining sleeve, accommodate and be limited in described inner chamber, has the endoporus that is used for accommodating and clamping working head axially arranged along main shaft, and the diameter at described retaining sleeve two ends all is greater than the diameter of mid portion, and described mid portion is elastic component; And
Sheath, be sheathed on described main shaft outside, and described sheath can and discharge between the second place of described retaining sleeve in the primary importance that compresses described retaining sleeve and move.
In embodiment, described retaining sleeve is that rigid material makes, and described mid portion is provided with along the axially extended groove of main shaft therein.
In embodiment, described rigid material is metal therein.
In embodiment, described groove upwards is communicated with the endoporus of described retaining sleeve in main shaft diameter therein.
In embodiment, described groove is provided with a plurality of therein, is evenly arranged along the excircle of described mid portion.
In embodiment, described sheath and described main shaft spiral connect therein, and described sheath has can move axially to compress along main shaft the abutting part of described retaining sleeve.
Therein in embodiment, but described sheath and the setting of described main shaft relative sliding, and between described sheath and described main shaft, be provided with for the elastic component of the elastic force that is repositioned to primary importance is provided to described sheath, described sheath has can move axially to compress along main shaft the abutting part of described retaining sleeve.
Therein in embodiment, described abutting part stretches in the inner chamber of described main shaft or is positioned at described inner chamber outside.
In embodiment, the bottom of described jacket inner wall is provided with the connecting portion radially extended therein, and described abutting part is arranged at the end of described connecting portion.
In embodiment, in described inner chamber, be provided with the step of spacing described retaining sleeve therein.
Above-mentioned chuck, during the clamping working head, because gripping sleeve two ends size is large, the mid portion size is little and be elastic component, therefore after sheath moves and compress gripping sleeve, the mid portion of gripping sleeve can be to internal strain after being subjected to the both sides extruding, after the endoporus of mid portion dwindles, can clamp working head, the clamping structure element is few, simple in structure, center of gravity easily guarantees, assembles simple.
The accompanying drawing explanation
Fig. 1 is the structural representation of conventional clip;
Fig. 2 is the structural representation of the chuck of an embodiment; Wherein working head is in clamped condition;
Fig. 3 is the cutaway view of A-A line in Fig. 2;
Fig. 4 is the schematic diagram of retaining sleeve in chuck;
Fig. 5 is the sectional structure chart of retaining sleeve shown in Figure 4.
Related elements reference numeral in figure is as follows:
100, chuck 110, main shaft 112, inner chamber
114, step 120, retaining sleeve 122, upper end
124, lower end 126, mid portion 1262, groove
128, endoporus 130, sheath 132, connecting portion
134, abutting part 140, housing 200, working head
910, main shaft 920, collet 930, retaining sleeve
940, locking nut
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of chuck is described.
Please refer to Fig. 2 to Fig. 5, disclose a kind of chuck 100, be used for clamping and discharging working head 200, chuck 100 can be applied to power tool, on the power tools such as electric router, spanner, brill.
In one embodiment, chuck 100 comprises main shaft 110, is housed in main shaft 110 retaining sleeve 120 that is used for locking working head 200, is enclosed within main shaft 110 outsides and is used for the sheath 130 of compression clamping cover 120.Main shaft 110 can be the output shaft of motor, also can be connected with motor shaft, thereby make main shaft 110 realize rotation or ballistic motion.Chuck 100 can clamp dissimilar working head, makes power tool realize different functions, as folder fastener head when realizing the impact wrench function, and for example when realizing Milling Process, clamps milling cutter.
Please refer to Fig. 2, in the present embodiment, chuck 100 also comprises a housing 140.Main shaft 110 is output shafts of motor, and it is contained in housing 140, and an end is the working end of extending housing 140.Main shaft 110 is provided with inner chamber 112 vertically on working end, be used for accommodating working head 200.Inner chamber 112 1 end sealings, other end opening inserts for working head 200.The outside of main shaft 110 is provided with external screw thread (not label), connects in order to sheath 130, to reach spiral, and sheath 130 can be moved up and down on main shaft 110 is axial.
Retaining sleeve 120 is accommodated and is limited in inner chamber 112.In inner chamber 112, be provided with the step 114 of spacing retaining sleeve 120 in blind end, make retaining sleeve 120 limited on the direction made progress.Certainly, also step 114 can be set in inner chamber 112, directly utilize the bottom of the blind end of inner chamber 112 to carry out spacing retaining sleeve 120, but after step 114 was set, main shaft 110 processing when boring forms inner chamber 112 was more convenient.
Please refer to Fig. 2 to Fig. 4, retaining sleeve 120 comprises 122, lower end, upper end 124 and middle mid portion 126, the diameter of 122He lower end, upper end 124 all is greater than the diameter of mid portion 126, and retaining sleeve 120 axially is provided with to accommodate and clamp the endoporus 128 of working head along main shaft simultaneously.Retaining sleeve 120 can be integral structure, can be also fabricated structure, and namely upper end 122, lower end 124 can be to be assembled in respectively on mid portion 126, can be also one-body molded with mid portion 126.Endoporus 128 connects whole retaining sleeve 120 usually, when working head 200 is inserted, can also further utilize the inner chamber 112 of main shaft 110, makes chuck 100 structure relative compact on main shaft is axial.
On mid portion 126, axially be provided with a plurality of grooves 1262 along main shaft, make mid portion 126 become an elastic component, namely possess elastically-deformable ability.In the present embodiment, groove 1262 has four, is distributed on the excircle of mid portion 126, but is appreciated that the difference required according to mid portion 126 elastic deformation abilities, and the quantity of groove 1262 can be also one, two, three or more; Groove 1262 is communicated with endoporus 128 diametrically, and purpose is also in order to guarantee that mid portion 126 possesses the elastic deformation ability that meets clamping requirement, and certainly, groove 1262 also can not connect the wall of mid portion 126.Due to the diameter of 122He lower end, upper end 124, all be greater than the diameter of mid portion 126, therefore when 124 press nip overlap 120 from 122He lower end, upper end respectively, mid portion 126 can only, to internal strain, make the endoporus 128 at mid portion 126 places dwindle, thereby can clamp working head 200.Retaining sleeve 120 is for rigid material such as metal-made obtain, and owing on mid portion 126, being provided with groove 1262, so mid portion 126 possesses better elastic deformation ability than two ends.Retaining sleeve 120 can be also to be made by elastomeric material, but makes with rigid material, is preferably metal, after mid portion 126 distortion, can guarantee better the reliability clamped, the situation that not there will be clamping to lose efficacy.In the present embodiment, by the endoporus 128 of control retaining sleeve 120 and the gap between working head 200, can guarantee can compress working head 200 at mid portion 126 during to internal strain, generally speaking, need to guarantee that working head 200 is in not extruded situation, the fit clearance between endoporus 128 and working head 200 is 0.02～0.05mm.
Please refer to Fig. 2, the bottom of sheath 130 inwalls is provided with the connecting portion 132 radially extended, and the end of connecting portion 132 axially is provided with the abutting part 134 in the inner chamber 112 that stretches into main shaft 110 along main shaft, and abutting part 134 is resisted against on the lower end 124 of retaining sleeve 120.Like this, when sheath 130 moved up with respect to main shaft 110, abutting part 134 and step 114 acted on retaining sleeve 120 from the two ends of retaining sleeve 120 respectively, made mid portion 126 to internal strain, endoporus 128 diminishes in the aperture at mid portion 126 places, thereby working head 200 is clamped.It may be noted that, abutting part 134 can certainly not stretch in the inner chamber 112 of main shaft 110, abutting part 134 also can butt retaining sleeve 120 when main shaft 110 is outside, now, the lower end of retaining sleeve 120 is concordant with main shaft 110 ends or be positioned at outside the getting final product of inner chamber 112 of main shaft 110, abutting part 134 can not extend axially along main shaft yet, in a word, as long as can compression clamping cover 120 when sheath 130 moves along main shaft 110.
In above-described embodiment, be threaded connection between sheath 130 and main shaft 110, sheath 130 can be moved axially along main shaft, so sheath 130 can be a locking nut.Between sheath 130 and main shaft 110, can certainly not be threaded connection, as can relative sliding between sheath 130 and main shaft 110, simultaneously between sheath 130 and main shaft 110, elastic component is set, as spring, under normality, sheath 130 is in the primary importance of compression clamping cover 120 under the resilient force of spring, when needs clamp working head 200, Compress Spring makes sheath 130 move to the second place that discharges gripping sleeve 120, then working head 200 is inserted, and then retracting spring, under the resilient force of spring, sheath 130 returns back to primary importance, thereby compression clamping cover 120, and then clamping working head 200.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a chuck, be used to accommodating and clamp the outside chuck inserted, is characterized in that, comprising:
Main shaft, have the inner chamber axially arranged along main shaft;
Retaining sleeve, accommodate and be limited in described inner chamber, has the endoporus that is used for accommodating and clamping working head axially arranged along main shaft, and the diameter at described retaining sleeve two ends all is greater than the diameter of mid portion, and described mid portion is elastic component; And
Sheath, be sheathed on described main shaft outside, and described sheath can and discharge between the second place of described retaining sleeve in the primary importance that compresses described retaining sleeve and move.
2. chuck according to claim 1, is characterized in that, described retaining sleeve is that rigid material makes, and described mid portion is provided with along the axially extended groove of main shaft.
3. chuck according to claim 2, is characterized in that, described rigid material is metal.
4. chuck according to claim 2, is characterized in that, described groove upwards is communicated with the endoporus of described retaining sleeve in main shaft diameter.
5. chuck according to claim 2, is characterized in that, described groove is provided with a plurality of, is evenly arranged along the excircle of described mid portion.
6. chuck according to claim 1, is characterized in that, described sheath and described main shaft spiral connect, and described sheath has can move axially to compress along main shaft the abutting part of described retaining sleeve.
7. chuck according to claim 1, it is characterized in that, but described sheath and the setting of described main shaft relative sliding, and between described sheath and described main shaft, be provided with for the elastic component of the elastic force that is repositioned to primary importance is provided to described sheath, described sheath has can move axially to compress along main shaft the abutting part of described retaining sleeve.
8. according to the described chuck of claim 6 or 7, it is characterized in that, described abutting part stretches in the inner chamber of described main shaft or is positioned at described inner chamber outside.
9. according to the described chuck of claim 6 or 7, it is characterized in that, the bottom of described jacket inner wall is provided with the connecting portion radially extended, and described abutting part is arranged at the end of described connecting portion.
10. chuck according to claim 1, is characterized in that, in described inner chamber, is provided with the step of spacing described retaining sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202483445U CN203305185U (en) | 2013-05-09 | 2013-05-09 | Chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202483445U CN203305185U (en) | 2013-05-09 | 2013-05-09 | Chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203305185U true CN203305185U (en) | 2013-11-27 |
Family
ID=49611419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202483445U Expired - Fee Related CN203305185U (en) | 2013-05-09 | 2013-05-09 | Chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203305185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139376A (en) * | 2013-05-09 | 2014-11-12 | 宝时得机械（张家港）有限公司 | Collet |
-
2013
- 2013-05-09 CN CN2013202483445U patent/CN203305185U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139376A (en) * | 2013-05-09 | 2014-11-12 | 宝时得机械（张家港）有限公司 | Collet |
| CN104139376B (en) * | 2013-05-09 | 2016-04-27 | 宝时得机械（张家港）有限公司 | Chuck |
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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: 20131127 Termination date: 20150509 |
|
| EXPY | Termination of patent right or utility model |