CN203725848U - Self-locking mechanism on keyless drill chuck - Google Patents
Self-locking mechanism on keyless drill chuck Download PDFInfo
- Publication number
- CN203725848U CN203725848U CN201420107375.3U CN201420107375U CN203725848U CN 203725848 U CN203725848 U CN 203725848U CN 201420107375 U CN201420107375 U CN 201420107375U CN 203725848 U CN203725848 U CN 203725848U
- Authority
- CN
- China
- Prior art keywords
- drill
- self
- nut
- locking mechanism
- gear ring
- 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
Links
- 241001656951 Protheca Species 0.000 claims description 21
- 230000017105 transposition Effects 0.000 claims description 20
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012856 packing Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Drilling Tools (AREA)
- Drilling And Boring (AREA)
Abstract
The utility model discloses a self-locking mechanism on a keyless drill chuck. The self-locking mechanism comprises a rear sleeve, a drill and clamping jaws. The drill is arranged in the rear sleeve and can be connected onto a spindle of a drill machine, the clamping jaws are arranged in inclined holes in the drill and can be longitudinally shifted and guided, a gear ring is arranged on the drill, a nut sleeves the drill and is meshed with threads of the clamping jaws, a spring strip is fixed onto the nut, the spring strip and the nut can synchronously move, and a bushing sleeves the outer edges of the spring strip; a clamping plate which is close to the gear ring is arranged at one end of the spring strip, and a semi-arc self-locking plate is arranged at the other end of the spring strip; a cam table and a limiting table are arranged in the bushing along the inner wall of the bushing, the clamping plate on the spring strip and the gear ring can be clamped with each other under the control of the cam table, and a self-locking effect can be realized by the self-locking plate on the spring strip under the control of the limiting table. The self-locking mechanism on the keyless drill chuck has the advantages of thorough self-locking effect, high impact load resistance and wide market prospect.
Description
Technical field
The utility model relates to the self-locking mechanism on a kind of hand fastening drill clutch.
Background technology
Drill chuck is as part important in electric hand drill, of a great variety, is divided into hand-tight series, light-duty spanner series, heavy spanner series and self-tightening series.
Wherein existing hand fastening drill clutch comprises rear cover, drill body, jaw, nut, spring leaf, lining and protheca, spring leaf is fixed on nut and with nut synchronizes, and lining is arranged in protheca, and with protheca synchronous rotary, and lining and spring leaf match, card is established, by rotation protheca, drive nut rotation, then jaw is passed in and out in the inclined hole of drill body, realize the clamping to drill bit or get loose, in the time clamping, the gear ring on drill body can be blocked in spring leaf one end, realizes fixing.The hand fastening drill clutch of this kind of structure in use, is hit under load, and spring leaf is due to the external structure without any resistance to shock loads, and easily loosening skidding, causes the drill bit of jaw clamping easily become flexible or come off, and is difficult to keep the continuity of work.
Summary of the invention
The utility model will solve spring leaf on existing hand fastening drill clutch without self-locking mechanism, easy loosening technical problem in the time that work is subject to shock loading.
The technical scheme in the invention for solving the above technical problem is:
The utility model discloses the self-locking mechanism on a kind of hand fastening drill clutch, comprise rear cover, be arranged in the drill body on the be connected in drill spindle in rear cover and be located at the jaw that can vertically move guiding in the inclined hole in drill body, described drill body is provided with gear ring, nut sleeve be located on drill body and with the threaded engagement of jaw, it is characterized in that: a spring leaf is fixed on nut and with it and is synchronized with the movement, be arranged with a lining in spring leaf outer rim; Described spring leaf one end is the clamping sheet near gear ring, the other end be semiarc shape from locking plate; Be provided with along inwall the cam platform that clamping sheet on control spring sheet and gear ring clamp in described lining, and be provided with the limiting stand that carries out self-locking from locking plate on control spring sheet.
On described nut, be along the circumferential direction evenly distributed with four transposition grooves, be provided with two transposition keys that are level in described lining, described transposition key and transposition groove match; Described spring leaf is fixed between transposition groove separately.
Described lining is provided with protheca, and protheca front end is embedded with sheathing.
The technique effect that the utility model can reach is:
Hand fastening drill clutch of the present utility model be designed to respectively at spring leaf two ends clamping sheet with from locking plate, by turning clockwise, protheca synchronously drives lining, cam platform on lining gives thrust of clamping sheet of spring leaf, the synchronous nut that drives rotates, after jaw clamps drill bit, slightly firmly rotate protheca, cam platform extruding clamping sheet, make clamping sheet block the gear ring on nut, meanwhile, limiting stand pushes from locking plate and climbs over, limiting stand is oppositely propped up from locking plate, no longer loosening while making lining be subject to shock loading, ensure that clamping sheet is firmly stuck on gear ring, ensure the not loosening of nut.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is three-dimensional exploded view of the present utility model;
Fig. 3 is the floor map of spring leaf of the present utility model;
Fig. 4 is the floor map of lining of the present utility model;
Fig. 5 is the floor map of nut of the present utility model.
Description of reference numerals in figure:
1 is drill body; 2 is jaw;
3 is nut; 4 is nut sleeve;
5 is rolling bearing; 6 is packing ring;
7 is protheca; 8 is rear cover;
9 is sheathing; 10 is spring leaf;
11 is transposition groove; 12 is lining;
13 is transposition key; 14 is sheathing;
15 is clamping sheet; 16 is from locking plate;
17 is cam platform; 18 is limiting stand;
19 is gear ring; 20 is screw thread.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Refer to Fig. 1, Fig. 2, the utility model provides the self-locking mechanism on a kind of hand fastening drill clutch, comprise rear cover (8), be arranged in the drill body (1) on the be connected in drill spindle in rear cover (8) and be located at the jaw (2) that can vertically move guiding in the inclined hole in drill body (1), described drill body (1) is provided with gear ring (19), nut (3) is set in drill body (1) above and is meshed with the screw thread (20) of jaw (2), one spring leaf (10) is fixed on nut (3) above and is synchronized with the movement with it, be arranged with a lining (12) in spring leaf (10) outer rim, described spring leaf (10) one end is the clamping sheet (15) near gear ring (19), the other end be semiarc shape from locking plate (16), be provided with the cam platform (17) of clamping sheet (15) on control spring sheet (10) and gear ring (19) clamping in described lining (12) along inwall, and be provided with the limiting stand (18) that carries out self-locking from locking plate (16) on control spring sheet (10).
On described nut (3), be along the circumferential direction evenly distributed with four transposition grooves (11), in described lining (12), be provided with two transposition keys (13) that are level, described transposition key (13) matches with transposition groove (11); Described spring leaf (10) is fixed between transposition groove (11) separately.
Described lining (12) is provided with protheca (7), and protheca (7) front end is embedded with sheathing (9).
The utility model is also provided with packing ring (6) and ball bearing (5), described packing ring (6) is enclosed within on drill body (1), ball bearing (5) is placed on packing ring (6), and nut (3) is arranged on ball bearing (5) above, rotation easily.Between protheca (7) and rear cover (8), be also provided with sheathing (9).
The assemble method of hand fastening drill clutch of the present utility model is as follows:
First, three jaws (2) are once packed in the inclined hole of drill body (1), be inserted in packing ring (6), ball bearing (5) and nut (3) simultaneously, nut (3) is meshed with the screw thread (20) of jaw (2), be inserted in nut sleeve (4) in the outer ring of nut (3), make it specious, then spring leaf (10) is snapped in the transposition groove (11) of nut (3), the rear portion of the drill body (1) then part being assembled is inserted in rear cover (8); Lining (12) is inserted in protheca (7) and is fixed appropriate, and embed sheathing (9) in the front portion of protheca (7), finally the protheca assembling (7) is inserted in to the front portion of drill body (1), and protheca (7) mutually mates and coincide with rear cover (8), now, transposition key (13) in lining (12) matches with the transposition groove (11) of nut (3), clamping sheet (15) matches with cam platform (17), matches from locking plate (16) and limiting stand (18).
The using method of hand fastening drill clutch of the present utility model is as follows:
Be rotated counterclockwise protheca (7), three jaws (2) are opened, insert required drill bit, the protheca (7) that turns clockwise synchronously drives lining (12), cam platform (17) on lining (12) gives (15) thrusts of clamping sheet of spring leaf (10), the synchronous nut (3) that drives rotates, after jaw (2) clamps drill bit, slightly firmly rotate protheca (7), cam platform (17) extruding clamping sheet (15), make clamping sheet (15) block the gear ring (19) on nut (3), meanwhile, limiting stand (18) pushes from locking plate (16) and climbs over, limiting stand (18) is oppositely propped up from locking plate (16), no longer loosening while making lining (12) be subject to shock loading, ensure that clamping sheet (15) is firmly stuck on gear ring (19), ensure the not loosening of nut (3).
Self-locking mechanism on a kind of hand fastening drill clutch above the utility model embodiment being provided is described in detail, applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand the technical scheme that the utility model discloses; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (3)
1. the self-locking mechanism on a hand fastening drill clutch, comprise rear cover (8), be arranged in the drill body (1) on the be connected in drill spindle in rear cover (8) and be located at the jaw (2) that can vertically move guiding in the inclined hole in drill body (1), described drill body (1) is provided with gear ring (19), nut (3) is set in drill body (1) above and is meshed with the screw thread (20) of jaw (2), it is characterized in that: a spring leaf (10) is fixed on nut (3) above and is synchronized with the movement with it, be arranged with a lining (12) in spring leaf (10) outer rim, described spring leaf (10) one end is the clamping sheet (15) near gear ring (19), the other end be semiarc shape from locking plate (16), be provided with the cam platform (17) of clamping sheet (15) on control spring sheet (10) and gear ring (19) clamping in described lining (12) along inwall, and be provided with the limiting stand (18) that carries out self-locking from locking plate (16) on control spring sheet (10).
2. the self-locking mechanism on a kind of hand fastening drill clutch according to claim 1, it is characterized in that: on described nut (3), be along the circumferential direction evenly distributed with four transposition grooves (11), in described lining (12), be provided with two transposition keys (13) that are level, described transposition key (13) matches with transposition groove (11); Described spring leaf (10) is fixed between transposition groove (11) separately.
3. the self-locking mechanism on a kind of hand fastening drill clutch according to claim 1, is characterized in that: described lining (12) is provided with protheca (7), protheca (7) front end is embedded with sheathing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107375.3U CN203725848U (en) | 2014-03-11 | 2014-03-11 | Self-locking mechanism on keyless drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107375.3U CN203725848U (en) | 2014-03-11 | 2014-03-11 | Self-locking mechanism on keyless drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203725848U true CN203725848U (en) | 2014-07-23 |
Family
ID=51195953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420107375.3U Expired - Fee Related CN203725848U (en) | 2014-03-11 | 2014-03-11 | Self-locking mechanism on keyless drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203725848U (en) |
-
2014
- 2014-03-11 CN CN201420107375.3U patent/CN203725848U/en not_active Expired - Fee Related
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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: 20140723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |