CN200939511Y - Novel self-locking, hand fastening drill-chuck - Google Patents
Novel self-locking, hand fastening drill-chuck Download PDFInfo
- Publication number
- CN200939511Y CN200939511Y CN 200620106704 CN200620106704U CN200939511Y CN 200939511 Y CN200939511 Y CN 200939511Y CN 200620106704 CN200620106704 CN 200620106704 CN 200620106704 U CN200620106704 U CN 200620106704U CN 200939511 Y CN200939511 Y CN 200939511Y
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- China
- Prior art keywords
- nut
- gear
- drill
- tooth
- idler gear
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Abstract
The utility model provides a new self-locking hand tight drill chuck, which is composed of a drill body, a grip pawl, a nut connected with the thread of the grip and a rotational casing. A rotational intermediate gear is arranged on the outer surface of the drill body in the same axis with the nut, a tooth is positioned on the inner surface of the casing and the bottom of the nut, and a fixer with a gear shaft is arranged outside the surface of the drill body, a gear which is matched with the intermediate gear and the tooth inside the casing and a gear which is matched with the intermediate gear and the tooth of the nut are arranged on the gear shaft; a ring-shaped body which is arranged on the top of the nut has a ratchet on the inner wall, a ring with a spring lamination is positioned on the drill chuck, a step which restricts the axial displacement of the nut on the top is arranged on the drill chuck. The ring is arranged between the nut and the step of the drill body, and the spring lamination has a lock matched with the ratchet. With the advantages of compact structure, convenient assembly and a big clamping force, the utility model can prevent the reversed rotation of the nut when the drill chuck works, and the drilling tool for the grip pawl is not easily to loosen, slip and fall.
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 overcoat in the hand fastening drill clutch, nut and overcoat axially are 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 generally driving nut rotation drive jaw by the operation overcoat 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 can not becoming flexible and skids and new-type self-locking hand fastening drill clutch that clamping force is stronger under impact loading.For this reason, the utility model is by the following technical solutions: it comprises nut, the rotating overcoat that drill body, jaw and jaw are threaded, described drill body outer surface is with the rotating idler gear with the nut coaxial line, the inner surface of overcoat and the lower end of nut are provided with tooth respectively, described drill body outer surface also is with fixed cover, fixed cover is provided with gear shaft, and gear that cooperates with the tooth of idler gear and overcoat inner surface and the gear that cooperates with the tooth of idler gear and nut are housed on the gear shaft; The upper end of nut also is provided with annular solid, the annular solid inwall is provided with ratchet, and described drill chuck also is provided with the ring of band spring leaf, and drill body is provided with up the step to the nut axial limiting, described ring is sandwiched between nut and described drill body step, and described spring leaf is provided with the lock end that cooperates with ratchet.
Owing to adopt the technical solution of the utility model, structure of the present utility model is very compact, easy to assembly, in limited drill chuck inner space, the transmission that utilizes gear is cooperating of spring leaf and ratchet when, makes the input power of overcoat be converted into the clamping force of bigger jaw to drilling tool, and stop the backward rotation of nut when drill chuck is worked, improve the ability of drill chuck opposing shock loading, make the drilling tool of jaw clamping can not become flexible to skid and come off.
Description of drawings
Fig. 1 partly cuts open schematic diagram for a kind of embodiment's of the utility model.
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
Fig. 3 is the cutaway view of Fig. 1 along the B-B line.
Fig. 4 is the cutaway view of Fig. 1 along the C-C line.
Fig. 5 is an explosive view embodiment illustrated in fig. 1.
The specific embodiment
With reference to accompanying drawing.The utility model comprises nut 3, the rotating overcoat 2 that drill body 1, jaw 94 and jaw are threaded, described drill body outer surface is with the rotating idler gear 6 with the nut coaxial line, the inner surface of overcoat and the lower end of nut are provided with tooth 21,33 respectively, described drill body outer surface also is with fixed cover 7, fixed cover is provided with gear shaft 8, and gear 5 that cooperates with the tooth 21 of idler gear and overcoat inner surface and the gear 9 that cooperates with the tooth 33 of idler gear and nut are housed on the gear shaft; The upper end of nut also is provided with annular solid 31, the annular solid inwall is provided with ratchet 32, described drill chuck also is provided with the ring 4 of band spring leaf 41, drill body is provided with up the step 11 to the nut axial limiting, described ring is sandwiched in 11 on nut and described drill body step, and described spring leaf is provided with the lock end 42 that cooperates with ratchet.
In the utility model, the top of indication, below, upper end, lower end are according to the page of accompanying drawing 1.
Described annular solid 31 can be that directly processing also can be a ring-shaped work pieces that is connected with nut back end at the nut inner hole of nut back end.
Among Fig. 1, drawing reference numeral 93 be nut and the ring 4 bearing.Drawing reference numeral 92 is the collar of axial location overcoat.Drawing reference numeral 95 is the bonnet of drill chuck.
As shown in Figure 1, in the present embodiment, described idler gear is in the below of nut, and idler gear has the positioning end 61 to the radial and axial location of nut, described fixed cover be located at the below of idler gear and to intermediate gear shaft to spacing.Adopt this structure, can make nut adopt the monoblock type nut, simplified the location structure of nut simultaneously, make that the installation of part is more convenient, the performance of drill chuck is higher.
In the present embodiment, the lower surface of described nut is provided with stepped hole 34, and the tooth 33 of described nut is located at outside hole wall 341, and described idler gear cooperates with the inboard aperture 342 of nut the positioning end of the radial and axial location of nut.Like this, make that the internal structure of drill chuck is compact more, the globality of drill chuck internal structure is stronger, helps improving the performance of drill chuck.
As shown in the figure, in the present embodiment, fixed cover evenly is provided with 3 gear shafts 8, and each gear shaft 8 is equipped with gear 5 and gear 9 respectively, makes the equilibrium of drill chuck inner body layout, improves the performance of drill chuck.
As shown in the figure, the ring of described band spring leaf circumferentially evenly is provided with 3 spring leafs 41 along ring.When improving self-lock force, make the equilibrium of drill chuck inner body layout, improve the performance of drill chuck.
In clamping the drill bit process, rotating jacket, tooth 21 driven gears 5 of overcoat inner surface rotate, gear 5 drives idler gear 6 and rotates, idler gear 6 driven gears 9 rotate, and gear 9 drives nut and rotates, the feasible gearratio that can utilize gear, make the input power of overcoat be converted into the clamping force of bigger jaw, improve the ability of drill chuck opposing shock loading drilling tool; In clamping the drill bit process, the lock end of spring leaf slips in ratchet surface, after clamping drill bit, ring 4 is clamped between nut and the step 11 by the suffered reaction force that makes progress of nut, when when drill chuck is worked, being subjected to reverse impact power, because ring 4 is clamped between nut and the step 11, frictional resistance is bigger, ring 4 is difficult to rotate, and because ratchet is unidirectional tooth, in nut backward rotation direction, ratchet and spring mortice lock end are the matching relationships that withstands mutually, like this, nut can't backward rotation, and the drill bit of jaw clamping can not become flexible to skid and come off.And, because the clamping force of drill bit is increased, further increased and encircled 4 clamping forces that are subjected to, make that self-locking property of the present utility model is stronger.
The utility model adopts, and to be the lock end of spring leaf cooperate the structure that realizes self-locking with internal tooth element on the nut, like this, more compact structure not only, and can utilize the outside elastic force of self of spring leaf to realize cooperating of lock end 42 and ratchet, and both helped keeping outer and be stabilized in its centre bit when being enclosed within work, make again in clamping drill bit process, Melodious clatter clatter grating between spring leaf and the ratchet, the indication clamp operation, and ring 4 can also be as the packing ring between bearing 93 and the step 11.
Present embodiment is an example with single cover hand fastening drill clutch, in actual applications, two cover hand fastening drill clutch of back cover are set at overcoat 2 rears, and adopt nut to drive jaw and in the inclined hole of drill body, advance and retreat and also can use the technical scheme that the utility model provides with other hand fastening drill clutch of clamping drill bit.
Claims (6)
1, a kind of new-type self-locking hand fastening drill clutch, comprise nut, rotating overcoat that drill body, jaw and jaw are threaded, it is characterized in that described drill body outer surface is with the rotating idler gear with the nut coaxial line, the inner surface of overcoat and the lower end of nut are provided with tooth respectively, described drill body outer surface also is with fixed cover, fixed cover is provided with gear shaft, and gear that cooperates with the tooth of idler gear and overcoat inner surface and the gear that cooperates with the tooth of idler gear and nut are housed on the gear shaft; The upper end of nut also is provided with annular solid, the annular solid inwall is provided with ratchet, and described drill chuck also is provided with the ring of band spring leaf, drill body be provided with to above the step of nut axial limiting, described ring is sandwiched between nut and described drill body step, and described spring leaf is provided with the lock end that cooperates with ratchet.
2, a kind of new-type self-locking hand fastening drill clutch as claimed in claim 1, it is characterized in that described idler gear is in the below of nut, idler gear has the positioning end to the radial and axial location of nut, described fixed cover be located at the below of idler gear and to intermediate gear shaft to spacing.
3, a kind of new-type self-locking hand fastening drill clutch as claimed in claim 1 is characterized in that the lower surface of described nut is provided with the hole, and the tooth of described nut is located at hole wall.
4, a kind of new-type self-locking hand fastening drill clutch as claimed in claim 2, the lower surface that it is characterized in that described nut is provided with stepped hole, the tooth of described nut is located at outside hole wall, and described idler gear cooperates with the inboard aperture of nut the positioning end of the radial and axial location of nut.
5, as claim 1,2,3 or 4 described a kind of new-type self-locking hand fastening drill clutch, it is characterized in that fixed cover evenly is provided with 3 gear shafts, gear that cooperates with the tooth of idler gear and overcoat inner surface and the gear that cooperates with the tooth of idler gear and nut are housed on the gear shaft respectively.
6, as claim 1,2,3 or 4 described a kind of new-type self-locking hand fastening drill clutch, the ring that it is characterized in that described band spring leaf circumferentially evenly is provided with 3 spring leafs along ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620106704 CN200939511Y (en) | 2006-08-10 | 2006-08-10 | Novel self-locking, hand fastening drill-chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620106704 CN200939511Y (en) | 2006-08-10 | 2006-08-10 | Novel self-locking, hand fastening drill-chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200939511Y true CN200939511Y (en) | 2007-08-29 |
Family
ID=38745701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620106704 Expired - Fee Related CN200939511Y (en) | 2006-08-10 | 2006-08-10 | Novel self-locking, hand fastening drill-chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200939511Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014019148A1 (en) * | 2012-07-31 | 2014-02-06 | 威海达旺五金制品有限责任公司 | Novel drill chuck |
| CN106424798A (en) * | 2016-02-05 | 2017-02-22 | 浙江三鸥机械股份有限公司 | Self-locking type drill chuck |
-
2006
- 2006-08-10 CN CN 200620106704 patent/CN200939511Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014019148A1 (en) * | 2012-07-31 | 2014-02-06 | 威海达旺五金制品有限责任公司 | Novel drill chuck |
| CN106424798A (en) * | 2016-02-05 | 2017-02-22 | 浙江三鸥机械股份有限公司 | Self-locking type drill chuck |
| CN106424798B (en) * | 2016-02-05 | 2018-07-03 | 浙江三鸥机械股份有限公司 | A kind of Self-locking drill-chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20130810 |