CN104972425A - Screwdriver bit - Google Patents
Screwdriver bit Download PDFInfo
- Publication number
- CN104972425A CN104972425A CN201510352220.5A CN201510352220A CN104972425A CN 104972425 A CN104972425 A CN 104972425A CN 201510352220 A CN201510352220 A CN 201510352220A CN 104972425 A CN104972425 A CN 104972425A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- bit
- envelope line
- projection
- geometric envelope
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
Abstract
The invention discloses a screwdriver bit. The screwdriver bit has multiple convex blocks, wherein the convex blocks are formed at a handle part or on at least one surface of a bit driving part for clamping the bit in a bit base or clamping a sleeve or a similar object on a screwdriver tool. The formation of the convex blocks enables a geometric envelope line of the bit to be positioned in a tolerance of the bit base, so that the bit can be used for a standard bit base. After a torque is applied to the bit, the convex blocks are engaged to the inner surface of the bit base/the sleeve so as to clamp the bit/the sleeve.
Description
Technical field
The present invention relates to field of hardware, be specifically related to a kind of cutter head of screwdriver.
Background technology
At present, known the instrument having and be with detachable cutter head, cutter head is used for being engaged and driving various securing member to enter in workpiece.Such as, the screwdriver having and be with replaceable, detachable cutter head has now been known.Prior art mainly concentrates on hex(agonal)screw jet blade, and they make remodeling according to different securing members, thus is used in suitable tool tip of having retrofited.With gap between tool tip and driver bit, so that insert and change cutter head.Have employed various clamp method at present, such as rubber o-ring etc. attract method based on the method for interference engagement, mechanical locking device or magnetic force, but these methods may because of fracture, lose part, magnetic weakens and tool tip inner surface wearing and tearing and losing efficacy.
Summary of the invention
The object of the invention is to: a kind of driver bit is provided, overcome the above-mentioned defect existing for prior art.
Driver bit, an one shank has multiple surface, to form the certain geometrical shape with a geometric envelope line; One or more projection to be formed at least one above-mentioned surface and to be positioned at above-mentioned geometric envelope line; Above-mentioned projection can be engaged the inner surface of tool tip, skids off from above-mentioned tool tip to prevent above-mentioned cutter head; Projection has triangle or saw-toothed shape.
Further, above-mentioned geometry is: (a) hexagon, and above-mentioned geometric envelope line is above-mentioned hexagonal cross-sectional diameter adds or deduct manufacturing tolerance; Or, (b) rectangle, and the cross-sectional diameter that above-mentioned geometric envelope line is above-mentioned rectangle adds or deducts manufacturing tolerance.
Driver bit of the present invention provides projection, and when torque is applied on cutter head, these projections by the inner surface of occlusion tool tip, thus prevent cutter head from skidding off.
Accompanying drawing explanation
Fig. 1 is the side view of screwdriver tool of the present invention.
In figure: 30-geometric envelope line, 32-projection.
Detailed description of the invention
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of driver bit provided by the present invention, an one shank has multiple surface, to form the certain geometrical shape with a geometric envelope line; One or more projection 32 to be formed at least one above-mentioned surface and to be positioned at above-mentioned geometric envelope line 30; Above-mentioned projection can be engaged the inner surface of tool tip, skids off from above-mentioned tool tip to prevent above-mentioned cutter head.Above-mentioned projection 32 has triangle or saw-toothed shape.Above-mentioned geometry is: (a) hexagon, and above-mentioned geometric envelope line 30 is above-mentioned hexagonal cross-sectional diameters adds or deduct manufacturing tolerance, or (b) rectangle, and the cross-sectional diameter that above-mentioned geometric envelope line 30 is above-mentioned rectangles adds or deducts manufacturing tolerance.
Above-mentioned projection has the height across the change of above-mentioned surface, and wherein the above-mentioned height change of above-mentioned projection is preferably in about 0.0508mm to 0.1016mm, and the height of above-mentioned projection gradually changes from minimum constructive height to maximum height across above-mentioned surface.
Cutter head of the present invention and screwdriver tool easily manufacture, and can use together with standard cutter bit seat/sleeve.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (2)
1. a driver bit, is characterized in that: a shank has multiple surface, to form the certain geometrical shape with a geometric envelope line; One or more projection to be formed at least one above-mentioned surface and to be positioned at above-mentioned geometric envelope line; Above-mentioned projection can be engaged the inner surface of tool tip, skids off from above-mentioned tool tip to prevent above-mentioned cutter head; Projection has triangle or saw-toothed shape.
2. driver bit as claimed in claim 1, is characterized in that: above-mentioned geometry is: (a) hexagon, and above-mentioned geometric envelope line to be above-mentioned hexagonal cross-sectional diameter add or deduct manufacturing tolerance; Or, (b) rectangle, and the cross-sectional diameter that above-mentioned geometric envelope line is above-mentioned rectangle adds or deducts manufacturing tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352220.5A CN104972425A (en) | 2015-06-24 | 2015-06-24 | Screwdriver bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352220.5A CN104972425A (en) | 2015-06-24 | 2015-06-24 | Screwdriver bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104972425A true CN104972425A (en) | 2015-10-14 |
Family
ID=54269667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510352220.5A Pending CN104972425A (en) | 2015-06-24 | 2015-06-24 | Screwdriver bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104972425A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2094429U (en) * | 1991-01-06 | 1992-01-29 | 陈康华 | Anti-slip screw driver |
| EP0674880A1 (en) * | 1994-03-29 | 1995-10-04 | Andreas C. Dr. med. Stähelin | Biodegradable osteosynthesis screw and corresponding screwdriver |
| WO2000013857A1 (en) * | 1998-09-08 | 2000-03-16 | Phillips Screw Company | Driver bit and driver |
| CN2609721Y (en) * | 2003-02-21 | 2004-04-07 | 何建程 | Anti-skid structure of end of inner angle screwdriver |
| CN201279752Y (en) * | 2008-08-29 | 2009-07-29 | 俞云义 | Hexagon ring spanner |
| CN101664911A (en) * | 2008-09-05 | 2010-03-10 | 胡厚飞 | Tool chuck of screwdriver |
-
2015
- 2015-06-24 CN CN201510352220.5A patent/CN104972425A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2094429U (en) * | 1991-01-06 | 1992-01-29 | 陈康华 | Anti-slip screw driver |
| EP0674880A1 (en) * | 1994-03-29 | 1995-10-04 | Andreas C. Dr. med. Stähelin | Biodegradable osteosynthesis screw and corresponding screwdriver |
| WO2000013857A1 (en) * | 1998-09-08 | 2000-03-16 | Phillips Screw Company | Driver bit and driver |
| CN2609721Y (en) * | 2003-02-21 | 2004-04-07 | 何建程 | Anti-skid structure of end of inner angle screwdriver |
| CN201279752Y (en) * | 2008-08-29 | 2009-07-29 | 俞云义 | Hexagon ring spanner |
| CN101664911A (en) * | 2008-09-05 | 2010-03-10 | 胡厚飞 | Tool chuck of screwdriver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |