CN104511874B - Screwdriver and tool bit thereof - Google Patents
Screwdriver and tool bit thereof Download PDFInfo
- Publication number
- CN104511874B CN104511874B CN201310450052.4A CN201310450052A CN104511874B CN 104511874 B CN104511874 B CN 104511874B CN 201310450052 A CN201310450052 A CN 201310450052A CN 104511874 B CN104511874 B CN 104511874B
- Authority
- CN
- China
- Prior art keywords
- cutter head
- convex polygon
- knife bar
- screwdriver
- branch sleeve
- 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.)
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Links
- 239000007787 solid Substances 0.000 claims 1
- 241000755266 Kathetostoma giganteum Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- B25B15/00—Screwdrivers
- B25B15/02—Screwdrivers operated by rotating the handle
-
- 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
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
A screwdriver and a screwdriver head thereof belong to the technical field of screwdrivers. The cross section of the head is a convex polygon, the convex polygon is a non-regular polygon, the number of the sides of the convex polygon is an even number which is more than or equal to six, the opposite sides in the convex polygon are mutually parallel and have equal length, the area of the cross section of the tool bit is gradually increased from bottom to top, round corners are chamfered between the two adjacent side faces, and the number of the sides of the convex polygon is an even number which is 6-12. According to the invention, the shape of the screwdriver head is changed, and the screwdriver head is designed to be of a polyhedral structure, so that the contact area between the screwdriver head of the linear screwdriver and a screw is increased, the reaction force of the screw on the screwdriver is uniformly distributed on the screwdriver head, and the deformation resistance of the screwdriver head is improved.
Description
Technical field
The present invention relates to a kind of screwdriver and its cutter head, belong to driver technology field.
Background technology
Screwdriver is in the application a kind of instrument widely that produces and live.Wherein, the cutter head of the screwdriver of in-line
It is easily deformed in use, cause tool damage cannot use.At present, the cutter head cross section of known straight screwdriver is
Rectangle.Fig. 1 is existing Flathead screwdriver stress diagram in use.It can be found that one by examining
Font screwdriver seamed edge of cutter head 1 when using is contacted with screw 2, leads to driver bit seamed edge to bear the overwhelming majority
Revolving force, thus easily cause straight screwdriver head deformation.
In view of the problem that exists in use of above-mentioned existing Flathead screwdriver and defect, the present inventor relies on for many years
Working experience and abundant Professional knowledge finally have developed a kind of screwdriver and its cutter head, overcome the knife of existing straight screwdriver
Yielding problem is so as to more possess practicality.
Content of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of driver bit, existing to overcome
There is the yielding problem of straight screwdriver head.
In order to solve above-mentioned technical problem, present invention employs following technical scheme:
A kind of driver bit, upper end is connected with knife bar, and cutter head has multiple sides, and the cross section of cutter head is convex polygon
Shape, and this convex polygon is non-regular polygon, and the side number of this convex polygon is the even number more than or equal to six, phase in convex polygon
To side be parallel to each other and equal length, the area of the cross section of cutter head is gradually increased from bottom to top;Fall between adjacent two sides
There is fillet;The side number of convex polygon is the even number of 6-12.
A kind of screwdriver, the knife bar being connected with handle including handle, one end of knife bar has cutter head it is characterised in that knife
Head is cutter head, and upper end is connected with knife bar, and cutter head has multiple sides, and the cross section of cutter head is convex polygon, and this convex polygon
For non-regular polygon, and the side number of this convex polygon is the even number more than or equal to six, in convex polygon relative to side be parallel to each other
And equal length, the area of the cross section of cutter head is gradually increased from bottom to top;It is rounded down between adjacent two sides;Convex polygon
Side number be 6-12 even number；Cutter head is structure as a whole with knife bar；Cutter head and knife bar are to be detachably connected；The end of knife bar has
The branch sleeve being connected with cutter head, cutter head has the connection end being adapted with branch sleeve, and connection end inserts in branch sleeve, and
Circumferentially fixed between connection end and branch sleeve；Adsorbed by magnetic picture between connection end and branch sleeve.
Compared with prior art, the beneficial effects of the present invention is:
The present invention passes through to change the shape of the cutter head of screwdriver, segment design is polyhedral configuration, thus increasing one
The area that font driver bit is contacted with screw, and then screw is evenly distributed on screwdriver knife to the counteracting force of screwdriver
Head, increases the non-deformability of driver bit.
Brief description
When considered in conjunction with the accompanying drawings, by referring to detailed description below, can more completely more fully understand the present invention with
And easily learn the adjoint advantage of many of which, but accompanying drawing described herein is used for providing a further understanding of the present invention,
Constitute the part of the present invention, the schematic description and description of the present invention is used for explaining the present invention, does not constitute to this
Bright improper restriction, such as schemes wherein:
Fig. 1 is existing Flathead screwdriver stress diagram in use；
Fig. 2 is a kind of structural representation of embodiment of screwdriver of the present invention；
Fig. 3 is the a-a generalized section in Fig. 2 cutter head portion；
Fig. 4 is that the driver bit of the present invention acts on schematic diagram during screw；
Fig. 5 and Fig. 6 is respectively the cross-sectional view of the other embodiment of driver bit of the present invention.
Specific embodiment
With specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings, but not as the limit to the present invention
Fixed.
Embodiment 1: Fig. 3 is a kind of cross-sectional view of embodiment of driver bit of the present invention；As shown in figure 3,
A kind of driver bit 1, upper end is connected with knife bar, has multiple sides, the cross section of cutter head 1 is convex polygon, and this is convex many
Side shape is non-regular polygon, and the side number of this convex polygon is the even number more than or equal to six, and in this convex polygon relative to side
It is parallel to each other and equal length.The area of the cross section of cutter head is gradually increased from bottom to top, and wedge shaped.Relative in the present invention
When referring to two between counterclockwise and clockwise side number separately equal, then this two sides are relative
Side.The present invention passes through to increase the number of the side of cutter head, when making driver bit act on screw, is formed between cutter head and screw
Face contacts, and increased lifting surface area, screw is reacted on the twisting resistance on cutter head and be evenly distributed on the acting surface of cutter head, from
And increased the ability of anti-deformation of cutter head.
Preferred as above-described embodiment, it is rounded down between adjacent two sides.That is, between the adjacent both sides of convex polygon
It is rounded down.So when being applied to the screw of different model, driver bit can smoothly rotate to suitable acting surface.Typically
The side number of convex polygon is the even number of 6-12.Certainly, the setting not limitation of the invention of above-mentioned side number, can be according to reality
Needs are defined.Certainly, for the screwdriver for same model, the side (the side number of the convex polygon of cross section) of cutter head
More, then acting surface can be less.The cross section that Fig. 5 and Fig. 6 is respectively the other embodiment of driver bit of the present invention is illustrated
Figure.Can be varied from as the case may be by the driver bit that Fig. 3, Fig. 5 and Fig. 6 can be seen that the present invention, and cutter head
Side number different, but the number of its acting surface may be identical, such as Fig. 3 and Fig. 5.
The technical scheme of the screwdriver of anti-cutter head deformation of the present invention is as follows:
A kind of screwdriver, the knife bar being connected with handle including handle, one end of knife bar has cutter head, and cutter head adopts above-mentioned
Any embodiment or its preferably described cutter head.
Preferred as the present embodiment, cutter head and knife bar can be integrative-structure or dismountable structure.Cutter head
Between knife bar, the cutter head that can be equipped with Multiple Type is connected using the mode of being detachably connected, to select for different screws
The cutter head of suitable model, makes the acting surface of cutter head match with screw.
A kind of connection preferably, being connected with cutter head in the setting of the end of knife bar being detachably connected as cutter head and knife bar
Sleeve, and cutter head has the connection end being adapted with branch sleeve, connection end inserts in branch sleeve, and connection end and adapter sleeve
Circumferentially fixed between cylinder.Can be realized by corresponding convex stupefied and groove circumferentially fixed between connection end and branch sleeve, also can lead to
Crossing both Cross-section Design is polygonized structure, or is realized circumferentially fixed by the alignment pin being radially arranged.Cutter head and knife
Can realize connecting by magnetic force between bar, or flexibly positioned pearl be arranged on the connection end of cutter head, on the branch sleeve of knife bar
The connection that corresponding location hole realizes cutter head and knife bar is set.To those skilled in the art, can obtain from the prior art
It is detachably connected mode to multiple cutter heads and knife bar, will not be described here.
Embodiment 2: a kind of driver bit, upper end is connected with knife bar, and described cutter head has multiple sides, described cutter head
Cross section is convex polygon, and this convex polygon is non-regular polygon, and the side number of this convex polygon is the idol more than or equal to six
Number, in described convex polygon relative to side be parallel to each other and equal length, the area of the cross section of described cutter head from bottom to top by
Cumulative big.
Preferably, being rounded down between described adjacent two sides.
Preferably, the side number of described convex polygon is the even number of 6-12.
For providing a kind of screwdriver, this screwdriver can overcome existing straight screwdriver head easy to another object of the present invention
The problem of deformation.
A kind of screwdriver, the knife bar being connected with handle including handle, one end of described knife bar has cutter head, described cutter head
For any of the above-described described cutter head.
Preferably, described cutter head and knife bar are structure as a whole.
Preferably, described cutter head and knife bar are to be detachably connected.
Preferably, the end of described knife bar has the branch sleeve being connected with cutter head, described cutter head has and adapter sleeve
The connection end that cylinder is adapted, described connection end inserts in branch sleeve, and circumferentially fixed between connection end and branch sleeve.
Preferably, being adsorbed by magnetic picture between described connection end and branch sleeve.
As described above, being explained to embodiments of the invention, but as long as essentially without depart from this
Bright inventive point and effect can have a lot of deformation, and this will be readily apparent to persons skilled in the art.Therefore, this
The variation of sample is also integrally incorporated within protection scope of the present invention.
Claims (3)
1. a kind of driver bit, upper end is connected with knife bar, and cutter head has multiple sides it is characterised in that whole described cutter head
Cross section be convex polygon, and this convex polygon is non-regular polygon, and the side number of this convex polygon is more than or equal to six
Even number, in convex polygon relative to side be parallel to each other and equal length, the area of the cross section of cutter head is gradually increased from bottom to top；
It is rounded down between adjacent two sides；The side number of convex polygon is the even number of 6-12.
2. a kind of screwdriver, the knife bar being connected with handle including handle, one end of knife bar has cutter head, and upper end is connected with knife bar,
Cutter head has multiple sides it is characterised in that entirely the cross section of described cutter head is convex polygon, and this convex polygon is anon-normal
Polygon, and the side number of this convex polygon is the even number more than or equal to six, in convex polygon relative to side be parallel to each other and length
Equal, the area of the cross section of cutter head is gradually increased from bottom to top；It is rounded down between adjacent two sides；The side number of convex polygon
Even number for 6-12；Cutter head and knife bar are to be detachably connected；The end of knife bar has the branch sleeve being connected with cutter head, and cutter head has
There is the connection end being adapted with branch sleeve, connection end inserts in branch sleeve, and between connection end and branch sleeve, circumference is solid
Fixed；Adsorbed by magnetic picture between connection end and branch sleeve.
3. a kind of screwdriver according to claim 2 it is characterised in that
Realized by corresponding convex stupefied and groove circumferentially fixed between connection end and branch sleeve, or pass through both cross sections
It is set to polygonized structure, or realized by the alignment pin being radially arranged circumferentially fixed；
Realize being connected by magnetic force between cutter head and knife bar, or flexibly positioned pearl is arranged on the connection end of cutter head, in knife bar
The connection that corresponding location hole realizes cutter head and knife bar is arranged on branch sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450052.4A CN104511874B (en) | 2013-09-27 | 2013-09-27 | Screwdriver and tool bit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450052.4A CN104511874B (en) | 2013-09-27 | 2013-09-27 | Screwdriver and tool bit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104511874A CN104511874A (en) | 2015-04-15 |
| CN104511874B true CN104511874B (en) | 2017-02-01 |
Family
ID=52788049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310450052.4A Active CN104511874B (en) | 2013-09-27 | 2013-09-27 | Screwdriver and tool bit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104511874B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1272847B (en) * | 1960-05-30 | 1968-07-11 | Ver Zur Foerderung Von Forschu | screwdriver |
| US4625598A (en) * | 1985-05-10 | 1986-12-02 | Frank Wolfram | Positive engagement screw driver tool |
| CN2069339U (en) * | 1990-06-20 | 1991-01-16 | 何绍汉 | Minus and plus shape common screwdriver |
| DE9105418U1 (en) * | 1991-05-02 | 1992-08-27 | Wera-Werk Hermann Werner Gmbh & Co, 5600 Wuppertal | Slotted screwdriver |
| US5269209A (en) * | 1992-10-20 | 1993-12-14 | Baker David R | Curvilinear drive screwdriver and screw |
| GB2386854A (en) * | 2002-02-16 | 2003-10-01 | Steven Broadbelt | Diamond Drive Screwdriver System |
| CN201592411U (en) * | 2009-12-11 | 2010-09-29 | 刘灏文 | Dual purpose screwdriver |
| CN202006438U (en) * | 2010-12-07 | 2011-10-12 | 盛维护 | Detachable screwdriver |
| CN202412141U (en) * | 2012-01-06 | 2012-09-05 | 陈利夫 | Multifunctional screwdriver |
| CN203622305U (en) * | 2013-09-27 | 2014-06-04 | 中国石油天然气股份有限公司 | Screwdriver and tool bit thereof |
-
2013
- 2013-09-27 CN CN201310450052.4A patent/CN104511874B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104511874A (en) | 2015-04-15 |
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