CN110076716A - A kind of external tooth type ratchet screwdriver - Google Patents
A kind of external tooth type ratchet screwdriver Download PDFInfo
- Publication number
- CN110076716A CN110076716A CN201910298979.8A CN201910298979A CN110076716A CN 110076716 A CN110076716 A CN 110076716A CN 201910298979 A CN201910298979 A CN 201910298979A CN 110076716 A CN110076716 A CN 110076716A
- Authority
- CN
- China
- Prior art keywords
- pawl
- seat
- ratchet
- external tooth
- tooth type
- 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
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 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
- B25B15/04—Screwdrivers operated by rotating the handle with ratchet action
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a kind of external tooth type ratchet screwdrivers, including handle and ratchet head, handle is equipped with pawl seat, first pawl and the second pawl, ratchet head is round bar shape and is passed through by the center of pawl seat, a circle gear teeth are provided in the middle part of ratchet head outer surface, first pawl is provided with ratchet structure for one end of arc strip structure and its inner ring, second pawl is identical as the second pawl structures, pawl seat end face eccentric is provided with a ring annular groove, it supports or opposes at the partition of annular groove one end and partition and is provided with arc blend stop, mounting base is constituted between pawl seat wall surface and arc blend stop, commutation lid is connected with outside pawl seat, commutation lid inner bottom surface is provided with positioned at the first pawl end, item is dialled between second pawl end, commutation lid rotation makes group item act on the first pawl end or the second pawl end, to make the first pawl end or the second pawl end Portion and ratchet head gear teeth meshing.The disclosure of the invention high torsion of realization and high reliability, solve the problems, such as that structure is complicated, at high cost.
Description
Technical field
The present invention relates to a kind of screwdrivers, more particularly, to a kind of external tooth type ratchet screwdriver.
Background technique
Screwdriver as a kind of for tightening and revolving the tool of screw of sending, for mounting and dismounting screw under the prior art
Screwdriver be generally hand-wring type screwdriver.Since the rotation of hand has certain limit, cannot be rotated all along a direction,
Therefore this kind of tool is in use, then general hand reversely rotates hand, then weigh towards direction turning tool handle desired by some
New definition tool is to enter subsequent cycle.The reverse rotation of hand is held again again after decontroling handle for tool, and handle is inverted
When main shaft it is motionless, or will handheld tool and screw be detached from after reinsert screw rotation again so that entire rotary course is not
It is convenient.
Therefore it is now the unidirectional device in the tool equipped with ratchet mechanism etc., becomes ratchet screwdriver.The structure makes
The hand of user do not need to be detached from screw driver handle, does not need to reinsert screw again after screwdriver and screw are detached from yet and rotates.
But ratchet one-way drive mechanism is usually used in the ratchet screwdriver of the prior art, and this ratchet screwdriver can only realize that certain is single
Screw is tightened in direction, reversely then cannot achieve.In order to realize the set of function, multiple groups spine can be set in ratchet screwdriver
Wheel drive mechanism, adjust ratchet screwdriver after, it can be achieved that different directions screw rotation.
But existing ratchet structure, there is internal structure complexity, production cost is higher.And internal structure is unstable, by
When to large torque power, it may appear that de- to turn situation, reliability is low.Therefore, our company develops " a kind of external tooth type ratchet of the invention
Screwdriver ", to improve problem of the prior art.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of external tooth type ratchet screwdriver, high torsion and highly reliable is realized
Property, solve the problems, such as that structure is complicated, at high cost.
The technical scheme of the invention to solve the technical problem is: a kind of external tooth type ratchet screwdriver, including hand
Handle and the ratchet head for acting on bolt, the handle are equipped with pawl seat, the first pawl and the second pawl, ratchet head and are
Round bar shape is simultaneously passed through by the center of pawl seat, is provided with a circle gear teeth in the middle part of the ratchet head outer surface, and described first
Pawl is provided with ratchet structure, second pawl and the second pawl structures phase for one end of arc strip structure and its inner ring
Together, the pawl seat end face eccentric is provided with a ring annular groove, setting of supporting or opposing at annular groove one end partition and partition
Have arc blend stop, constitute mounting base between the pawl seat wall surface and arc blend stop, first pawl, the second pawl to
Back is installed on mounting base and the ratchet structure of end is exposed outside arc blend stop, and commutation lid, institute are connected with outside the pawl seat
The commutation lid inner bottom surface stated is provided with the item of dialling between the first pawl end, the second pawl end, the commutation lid rotation
Turning, which makes to dial item, acts on the first pawl end or the second pawl end, to make the first pawl end or the second pawl end and spine
Wheel head gear teeth meshing.
The further preferred embodiment of the present invention: the first pawl other end is provided with the protrusion for connecting spring,
One end of the spring is connect with protrusion, and the other end of spring is against at the partition of annular groove.
The further preferred embodiment of the present invention: the medial surface knot of the arc blend stop lateral surface and first pawl
Structure is adapted, and the medial surface of first pawl is fitted in arc blend stop lateral surface, is provided with ladder in the mounting base
Platform, for the other end of first pawl to be corresponding ladder-like, first pawl can be bonded arc gear in mounting base
Item is mobile.
The further preferred embodiment of the present invention: it is additionally provided with projection seat between the other end of annular groove i.e. two mounting base, institute
The projection seat stated limits the position of the first pawl or the second pawl, and the item of dialling is located above the projection seat and can revolve
Turn.
The further preferred embodiment of the present invention: the commutation lid inner wall is provided with several grooves, the groove
Positioned at the opposite for dialling item, the pawl seat connects card-bit part by elastic component, and it is recessed that the card-bit part acts on one of them
Slot, the commutation lid rotate so that card-bit part is stirred between several grooves.
The further preferred embodiment of the present invention: the pawl seat outer surface is provided with recess, and the card-bit part passes through
Elastic component is installed on recess, and the card-bit part is steel ball.
The further preferred embodiment of the present invention: the handle head offers notch, the outside wall surface of the pawl seat
It is provided with raised line, the notch and the pawl seat outer surface structure are adapted, the pawl seat insertion slot
It is mouthful inner circumferential, radially fixed.
The further preferred embodiment of the present invention: it is equipped with first for being connected to ratchet head periphery in the notch and consolidates
Determine part, the ratchet lid is provided with the second fixing piece for being connected to ratchet head periphery.
The further preferred embodiment of the present invention: the handle head linking commutation lid, between the handle, commutation lid
To connect, the ratchet head passes through ring cover and is inserted into pawl seat.
Compared with the prior art, the advantages of the present invention are as follows handles to be equipped with pawl seat, the first pawl and the second pawl, spine
Wheel head is round bar shape and is passed through by the center of pawl seat, and commutation lid is connected with outside pawl seat.Pass through pawl seat, the first pawl,
Two pawls, commutation lid and ratchet head realize that direction of rotation of the invention is adjustable.Components of the present invention are few, whole
Structure is simple, and production cost is low.Be provided with a circle gear teeth in the middle part of ratchet head outer surface, the first pawl be arc strip structure and
One end of its inner ring is provided with ratchet structure, and the second pawl is identical as the second pawl structures, and the first pawl, the second pawl are supported or opposed peace
Ratchet structure loaded on mounting base and end is exposed outside arc blend stop, and commutation lid inner bottom surface is provided with positioned at the first pawl end
Item is dialled between portion, the second pawl end, commutation lid rotation makes group item act on the first pawl end or the second pawl end, from
And make the first pawl end or the second pawl end and ratchet head gear teeth meshing.When the first pawl is applied to ratchet head, first
Pawl prevents ratchet head from rotating counterclockwise；And ratchet head rotates clockwise, the first pawl can be detached from ratchet head, and ratchet head is free
Rotation.When the second pawl acts on ratchet head, the second pawl prevents ratchet head from rotating clockwise；And ratchet head revolves counterclockwise
Turn, the second pawl can be detached from ratchet head, and ratchet head rotates freely.Pawl seat end face eccentric is provided with a ring annular groove, annular
It supports or opposes at the partition of slot one end and partition and is provided with arc blend stop, constitute mounting base between pawl seat wall surface and arc blend stop.First
Pawl, the second pawl move in the mounting base of pawl seat, so that entire motion structure is highly stable.When stress, the first pawl,
Second pawl the more presss from both sides the more tight in the eccentric structure that mounting base is formed, and equally increases torsion to wedge block.The present invention realizes high turn round
Power and high reliability.
Detailed description of the invention
The present invention is explained in further detail below with reference to attached drawing and preferred embodiment, but this field skill
Art personnel it will be appreciated that, these attached drawings are drawn for the purpose for explaining preferred embodiment, and therefore should not
As limitation of the scope of the invention.In addition, unless otherwise indicated, attached drawing, which is only shown in, conceptually indicates described object
Composition or construction may simultaneously be shown comprising expansiveness, and attached drawing is also not necessarily drawn to scale.
Fig. 1 is decomposition texture schematic diagram of the invention；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is the cross-sectional view in the section AA in Fig. 2；
Fig. 4 is the cross-sectional view in the section BB in Fig. 2；
Fig. 5 is the cross-sectional view in the section CC in Fig. 2；
Fig. 6 is the structural schematic diagram of commutative ring；
Fig. 7 is the structural schematic diagram of the first pawl；
Fig. 8 is the structural schematic diagram of pawl seat；
Fig. 9 is cross-sectional view of the invention.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As shown in Figures 1 to 9: a kind of external tooth type ratchet screwdriver including handle 1 and acts on the ratchet head of bolt
3, handle 1 is equipped with pawl seat 4, the first pawl 7 and the second pawl 5, and ratchet head 3 is round bar shape and is worn by the center of pawl seat 4
It crosses, a circle gear teeth 31 is provided in the middle part of 3 outer surface of ratchet head, the first pawl 7 is arc strip structure and one end of its inner ring
It is provided with 72 structure of ratchet, the second pawl 5 is identical as 5 structure of the second pawl, and 4 end face eccentric of pawl seat is provided with a ring annular groove
42,43 support or oppose and are provided with arc blend stop 44 at the partition of 42 one end of annular groove and partition, between 4 wall surface of pawl seat and arc blend stop 44
Constitute mounting base 41, the first pawl 7, the second pawl 5 support or oppose be installed on mounting base 41 and end 72 structure of ratchet it is exposed in arc
Outside shape blend stop 44, commutation lid 2 is connected with outside pawl seat 4, commutation 2 inner bottom surface of lid is provided with positioned at 7 end of the first pawl, the second spine
Item 22 is dialled between 5 end of pawl, the commutation rotation of lid 2 makes group item 22 act on 5 end of 7 end of the first pawl or the second pawl, from
And engage 7 end of the first pawl or 5 end of the second pawl with 3 gear teeth 31 of ratchet head.
First pawl, 7 other end is provided with the protrusion 73 for connecting spring 10, and one end of spring 10 is connect with protrusion 73,
The other end of spring 10 is against 43 at the partition of annular groove 42.Spring 10 is set so that dial after item 22 removes, the first pawl 7 or
Second pawl 5 can reply initial position, and realization is engaged with ratchet head 3.
The medial surface structure of 44 lateral surface of arc blend stop and the first pawl 7 is adapted, and the medial surface of the first pawl 7 is fitted in
44 lateral surface of arc blend stop, is provided with ladder platform in mounting base 41, the other end of the first pawl 7 be it is corresponding ladder-like, first
It is mobile that pawl 7 can be bonded arc blend stop 44 in mounting base 41.The whole structure setting of mounting base 41, i.e., arc blend stop 44 is outer
The structure of wall surface, the structure of 4 inner wall of pawl seat are for adapting to the structure of the first pawl 7 or the second pawl 5, also for limit
Make the moving line setting of the first pawl 7 or the second pawl 5.Be provided with ladder platform in mounting base 41, the first pawl 7 it is another
End is corresponding ladder-like, so that the movement of the first pawl 7 is more smooth.
Projection seat 45 is additionally provided between the other end of annular groove 42 i.e. two mounting base 41, projection seat 45 limits the first pawl
7 or second pawl 5 position, dial item 22 and be located above projection seat 45 and can rotate.Projection seat 45 also plays support simultaneously and dials
The effect of item 22.Item 22 is dialled in 45 upper surface slide of projection seat.
Commutation 2 inner wall of lid is provided with several grooves 21, and groove 21 is located at the opposite for dialling item 22, and pawl seat 4 passes through bullet
Property part 12 connect card-bit part 13, card-bit part 13 acts on one of groove 21, and commutation lid 2 rotates so that card-bit part 13 is several
It is stirred between a groove 21.The present invention is provided with three grooves 21, and card-bit part 13 acts on the groove 21 of two sides, realizes spine respectively
Wheel head 3 it is clockwise it is non-rotatable, counterclockwise it is non-rotatable.Card-bit part 13 acts on intermediate groove 21, at this time the first pawl
7, the second pawl 5 is not engaged with ratchet head 3, then ratchet head 3 is two-way rotatable.
4 outer surface of pawl seat is provided with recess, and card-bit part 13 is installed on recess by elastic component 12, and card-bit part 13 is steel
Pearl.Setting recess realizes that commutative ring can rotate under external force with steel ball structure, and no external force, which is then clamped, not to be moved.
1 head of handle offers notch 11, and the outside wall surface of pawl seat 4 is provided with raised line 48, notch 11 and 4 appearance of pawl seat
Face structure is adapted, and pawl seat 4 is inserted into 11 inner circumferential of notch, radially fixed.Pawl seat 4 is separately provided, convenient for the life of components
Processing is produced, setting notch 11 realizes the axial installation of pawl seat 4, thus it is fixed circumferential, radial, so that the present invention is in rotation bolt
When structure it is reliable.
The first fixing piece 8 for being connected to 3 periphery of ratchet head is installed, ratchet lid is provided with for being clamped in notch 11
The second fixing piece 9 in 3 periphery of ratchet head.Installation by the first fixing piece 8, the second fixing piece 9 to ratchet head 3, ratchet head 3
It can rotate about the axis.
1 head of handle linking commutation lid 2, to connect between handle 1, commutation lid 2, ratchet head 3 is inserted across ring cover
Enter pawl seat 4.Simplicity generosity in overall appearance of the present invention, the commutation rotation of lid 2 is convenient and is not limited by ratchet head 3, handle 1.
The present invention is described in detail above, specific case used herein is to the principle of the present invention and embodiment party
Formula is expounded, the above embodiments are only used to help understand the present invention and core concept.It should be pointed out that for this
For the those of ordinary skill of technical field, without departing from the principle of the present invention, the present invention can also be carried out several
Improvement and modification, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (9)
1. a kind of external tooth type ratchet screwdriver, including handle and the ratchet head of bolt is acted on, it is characterised in that the hand
Handle is equipped with pawl seat, the first pawl and the second pawl, and ratchet head is round bar shape and is passed through by the center of pawl seat, the spine
A circle gear teeth are provided in the middle part of wheel head outer surface, first pawl is arc strip structure and one end setting of its inner ring
There is ratchet structure, second pawl is identical as the second pawl structures, and the pawl seat end face eccentric is provided with a ring
Shape slot, described annular groove one end, which separates and supports or opposes at partition, is provided with arc blend stop, and the pawl seat wall surface and arc are kept off
Constitute mounting base between item, first pawl, the second pawl support or oppose be installed on mounting base and end ratchet structure it is exposed
Outside arc blend stop, commutation lid is connected with outside the pawl seat, the commutation lid inner bottom surface is provided with positioned at the first pawl
Item is dialled between end, the second pawl end, the commutation lid rotation makes group item act on the first pawl end or the second spine
Pawl end, to make the first pawl end or the second pawl end and ratchet head gear teeth meshing.
2. a kind of external tooth type ratchet screwdriver according to claim 1, it is characterised in that the first pawl other end
It is provided with the protrusion for connecting spring, one end of the spring is connect with protrusion, and the other end of spring is against annular groove
At partition.
3. a kind of external tooth type ratchet screwdriver according to claim 1, it is characterised in that the arc blend stop lateral surface
It is adapted with the medial surface structure of first pawl, the medial surface of first pawl is fitted on the outside of arc blend stop
Face, is provided with ladder platform in the mounting base, the other end of first pawl be it is corresponding ladder-like, described first
It is mobile that pawl can be bonded arc blend stop in mounting base.
4. a kind of external tooth type ratchet screwdriver according to claim 1, it is characterised in that the other end of annular groove i.e. two
Projection seat is additionally provided between mounting base, the projection seat limits the position of the first pawl or the second pawl, and described dials item position
Above the projection seat and it can rotate.
5. a kind of external tooth type ratchet screwdriver according to claim 1, it is characterised in that the commutation lid inner wall is set
Several grooves are equipped with, the groove is located at the opposite for dialling item, and the pawl seat connects card-bit part by elastic component, described
Card-bit part act on one of groove, the commutation lid rotates so that card-bit part is stirred between several grooves.
6. a kind of external tooth type ratchet screwdriver according to claim 5, it is characterised in that the pawl seat outer surface is set
It is equipped with recess, the card-bit part is installed on recess by elastic component, and the card-bit part is steel ball.
7. a kind of external tooth type ratchet screwdriver according to claim 1, it is characterised in that the handle head offers
Notch, the outside wall surface of the pawl seat are provided with raised line, and the notch and the pawl seat outer surface structure are adapted,
It is the described pawl seat insertion notch inner circumferential, radially fixed.
8. a kind of external tooth type ratchet screwdriver stated according to claim 7, it is characterised in that be equipped with and be used in the notch
It is connected to the first fixing piece of ratchet head periphery, the ratchet lid is provided with the second fixation for being connected to ratchet head periphery
Part.
9. a kind of external tooth type ratchet screwdriver according to claim 1, it is characterised in that the handle head linking is changed
To lid, to connect between the handle, commutation lid, the ratchet head passes through ring cover and is inserted into pawl seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910298979.8A CN110076716A (en) | 2019-04-15 | 2019-04-15 | A kind of external tooth type ratchet screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910298979.8A CN110076716A (en) | 2019-04-15 | 2019-04-15 | A kind of external tooth type ratchet screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110076716A true CN110076716A (en) | 2019-08-02 |
Family
ID=67415044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910298979.8A Pending CN110076716A (en) | 2019-04-15 | 2019-04-15 | A kind of external tooth type ratchet screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110076716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021175253A1 (en) * | 2020-03-03 | 2021-09-10 | 杭州巨星科技股份有限公司 | Manual tool capable of achieving bidirectional output of torque |
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| TW527993U (en) * | 2002-08-13 | 2003-04-11 | Jin-Tan Huang | Ratchet mechanism for screwdriver |
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| TWM255766U (en) * | 2004-01-06 | 2005-01-21 | Chin-Huei Chen | Improved structure for screwdriver |
| CN1736665A (en) * | 2004-08-16 | 2006-02-22 | 胡厚飞 | High torque force ratchet wheel driver |
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| CN201645389U (en) * | 2010-04-01 | 2010-11-24 | 绍兴恒力工具有限公司 | Ratchet screwdriver |
| TWM400388U (en) * | 2010-09-01 | 2011-03-21 | Yi-Fu Chen | Direction switching device of ratchet screwdriver |
| TW201201965A (en) * | 2010-07-13 | 2012-01-16 | Infar Ind Co Ltd | Direction control device for a tool |
| TWI576211B (en) * | 2016-03-31 | 2017-04-01 | Shao-Wei Chen | Ratchet screwdriver |
| US20190099864A1 (en) * | 2017-09-30 | 2019-04-04 | Chiung-Chang Tsai | Ratchet screwdriver |
| CN209970584U (en) * | 2019-04-15 | 2020-01-21 | 宁波泓谊塑胶科技有限公司 | External tooth type ratchet screwdriver |
-
2019
- 2019-04-15 CN CN201910298979.8A patent/CN110076716A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW418754U (en) * | 2000-01-18 | 2001-01-11 | Hu Jeng Tsan | Position fixing structure for screwdriver |
| TW527993U (en) * | 2002-08-13 | 2003-04-11 | Jin-Tan Huang | Ratchet mechanism for screwdriver |
| TWM241178U (en) * | 2003-08-20 | 2004-08-21 | Jin-Tan Huang | Ratchet mechanism for screwdriver |
| TWM255766U (en) * | 2004-01-06 | 2005-01-21 | Chin-Huei Chen | Improved structure for screwdriver |
| CN1736665A (en) * | 2004-08-16 | 2006-02-22 | 胡厚飞 | High torque force ratchet wheel driver |
| CN201198123Y (en) * | 2008-03-31 | 2009-02-25 | 杭州巨星科技股份有限公司 | Anti-swing directional manual rotating tool |
| CN201645389U (en) * | 2010-04-01 | 2010-11-24 | 绍兴恒力工具有限公司 | Ratchet screwdriver |
| TW201201965A (en) * | 2010-07-13 | 2012-01-16 | Infar Ind Co Ltd | Direction control device for a tool |
| TWM400388U (en) * | 2010-09-01 | 2011-03-21 | Yi-Fu Chen | Direction switching device of ratchet screwdriver |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021175253A1 (en) * | 2020-03-03 | 2021-09-10 | 杭州巨星科技股份有限公司 | Manual tool capable of achieving bidirectional output of torque |
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