CN107529481A - A kind of screwdriver that can change cutter head size - Google Patents

A kind of screwdriver that can change cutter head size Download PDF

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Publication number
CN107529481A
CN107529481A CN201710904174.4A CN201710904174A CN107529481A CN 107529481 A CN107529481 A CN 107529481A CN 201710904174 A CN201710904174 A CN 201710904174A CN 107529481 A CN107529481 A CN 107529481A
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CN
China
Prior art keywords
cutter head
small bit
bit tool
screwdriver
slide bar
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Granted
Application number
CN201710904174.4A
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Chinese (zh)
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CN107529481B (en
Inventor
白皓
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Shaoxing Shubao Agricultural Technology Co., Ltd.
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白皓
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Priority to CN201710904174.4A priority Critical patent/CN107529481B/en
Publication of CN107529481A publication Critical patent/CN107529481A/en
Application granted granted Critical
Publication of CN107529481B publication Critical patent/CN107529481B/en
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Abstract

The invention discloses a kind of screwdriver that can change cutter head size, including screwdriver handle, screwdriver rod and big cutter head, the upper outside surfaces of the screwdriver handle are provided with antiskid groove, middle cutter head adjusting nut is provided with the downside of the antiskid groove, small bit tool adjusting nut is provided with the downside of the middle cutter head adjusting nut, handle rubber sleeve is provided with the downside of the screwdriver handle, the screwdriver rod is arranged on the downside surface middle position of screwdriver handle;Screwdriver is designed to multilayer nest form, big cutter head has been nested with middle cutter head, middle cutter head is embedded to be cased with small bit tool, cutter head is controlled by the corresponding adjusting nut on screwdriver handle, the telescopic adjustment of cutter head can be carried out, realize and tip shapes are changed into different sizes, increase single screwdriver to screw model adaptability, facilitate in people's daily life and detachable maintaining is carried out to daily necessities.

Description

A kind of screwdriver that can change cutter head size
Technical field
The invention belongs to maintenance tool technical field, and in particular to a kind of screwdriver that can change cutter head size.
Background technology
Screwdriver is a kind of for twisting screw to force its instrument in place, generally has a thin sphenocephaly, can insert Enter in the line of rabbet joint or recess of screw cap, Jing-jin-ji region Shanxi Henan and Shaanxi dialect are referred to as " screwdriver ", and the ground such as Anhui and Hubei is referred to as " bottle opener ", central and west regions referred to as " are altered ", and Yangtze River Delta Area is referred to as " turn screw ".Mainly there are two kinds of a word and cross.Common Also hexagonal screwdriver, including two kinds of interior hexagonal and outer-hexagonal.
Original driver bit is typically immutable, and when carrying out detachable maintaining using screwdriver, professional person is tieed up Repair generally require it is standby with many model screwdrivers, and typically will not be standby many in family, this allows for most of families and carried out During routine use screwdriver, often there is model not counterpart and the embarrassment that can not use, have impact on daily life quality.
The content of the invention
It is an object of the invention to provide a kind of screwdriver that can change cutter head size, to solve to carry in above-mentioned background technology The original driver bit gone out is typically immutable, and when carrying out detachable maintaining using screwdriver, professional person carries out maintenance one As need it is standby with many model screwdrivers, and typically will not be standby many in family, this allow for most of families carry out it is daily During using screwdriver, often there is model not counterpart and the embarrassment that can not use, the problem of have impact on daily life quality.
To achieve the above object, the present invention provides following technical scheme:A kind of screwdriver that can change cutter head size, including Screwdriver handle, screwdriver rod and big cutter head, the upper outside surfaces of the screwdriver handle are provided with antiskid groove, described anti-skidding Middle cutter head adjusting nut is provided with the downside of groove, small bit tool adjusting nut is provided with the downside of the middle cutter head adjusting nut, Handle rubber sleeve is provided with the downside of the screwdriver handle, the screwdriver rod is arranged in the downside surface of screwdriver handle Between opening position, the big cutter head is arranged on the lower end of screwdriver rod, and the downside inner surface wall of the big cutter head is provided with middle cutter head, institute The inner side following table wall for stating middle cutter head is provided with small bit tool, and cutter head groove, the cutter head groove are provided with the inside of the small bit tool Outside be provided with small bit tool carrying tooth, small bit tool lifting slide bar, the small bit tool lifting are provided with the upside of the small bit tool The outer surface of slide bar is provided with pocket knife head slider, and small bit tool adjustment slide bar is provided with the upside of the small bit tool lifting slide bar, The outer surface of the small bit tool adjustment slide bar is provided with small bit tool angled-lift splits, and middle cutter head liter is provided with the upside of the middle cutter head Slide bar drops, and the outer surface of the middle cutter head lifting slide bar is provided with middle cutter head sliding block, the upside of the middle cutter head lifting slide bar Middle cutter head adjustment slide bar is provided with, the outer surface of the middle cutter head adjustment slide bar is provided with middle cutter head angled-lift splits, the middle knife The inner surface of head adjusting nut is provided with middle cutter head nut internal tooth, during the inner surface of the middle cutter head nut internal tooth is provided with Cutter head planetary gear, the middle planetary outer surface of cutter head are provided with middle cutter head on the outside of middle cutter head adjustment slide bar Adjustment gear, the inner surface of the middle cutter head adjustment gear are provided with middle cutter head close to the outer surface of middle cutter head adjustment slide bar Internal tooth is adjusted, the inner surface of the middle cutter head adjustment slide bar is provided with middle cutter head internal chute, the small bit tool adjusting nut Inner surface is provided with pocket knife head nut internal tooth, and the inner surface of the pocket knife head nut internal tooth is provided with small bit tool planet tooth Wheel, the planetary outer surface of small bit tool are provided with small bit tool regulation tooth close to the outer surface of small bit tool adjustment slide bar Wheel, the outer surface of the small bit tool adjustment gear are provided with adjustment gear external gear teeth, the inner side of the small bit tool adjustment gear Surface is provided with small bit tool regulation internal tooth close to the outer surface of small bit tool adjustment slide bar.
Preferably, it is slidably connected between the middle cutter head and big cutter head by middle cutter head sliding block, the middle cutter head and pocket knife It is slidably connected between head by pocket knife head slider.
Preferably, it is slidably connected between the middle cutter head adjusting nut and screwdriver handle by neck, the small bit tool It is slidably connected between adjusting nut and screwdriver handle by neck.
Preferably, the middle cutter head planetary gear is provided with six altogether, and six middle cutter head planetary gears are installed in spiral shell The inside of silk hilt hand, is connected, the middle cutter head between the middle cutter head planetary gear and screwdriver handle by axis of rotation Connection is engaged by middle cutter head nut internal tooth between adjusting nut and middle cutter head planetary gear, the middle cutter head planetary gear is with Engaged and connected by adjustment gear external gear teeth between cutter head adjustment gear.
Preferably, adjust internal tooth by middle cutter head between the middle cutter head adjustment gear and middle cutter head adjustment slide bar and slide and connect Connect, be slidably connected between the middle cutter head regulation internal tooth and middle cutter head angled-lift splits by neck.
Preferably, the small bit tool planetary gear is provided with three altogether, and three small bit tool planetary gears are installed in spiral shell The inside of silk hilt hand, is connected, the small bit tool between the small bit tool planetary gear and screwdriver handle by axis of rotation Connection is engaged by pocket knife head nut internal tooth between adjusting nut and small bit tool planetary gear, the pocket knife head nut internal tooth with it is small Engaged and connected by adjustment gear external gear teeth between cutter head adjustment gear.
Preferably, adjust internal tooth by small bit tool between the small bit tool adjustment gear and small bit tool adjustment slide bar and slide and connect Connect, be slidably connected between the small bit tool regulation internal tooth and small bit tool angled-lift splits by neck.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention is scientific and reasonable for structure, safe and convenient to use, will Screwdriver is designed to multilayer nest form, and big cutter head has been nested with middle cutter head, and middle cutter head is embedded to be cased with small bit tool, and cutter head passes through spiral shell The corresponding adjusting nut of silk hilt on hand is controlled, and can be carried out the telescopic adjustment of cutter head, be realized and change tip shapes For different sizes, facilitate in people's daily life and detachable maintaining is carried out to daily necessities, increase single screwdriver to screw Model adaptability, it is not necessary to which standby many screwdrivers can also deal with the repair demolition in daily life.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the small bit tool structural representation of the present invention;
Fig. 3 is the middle cutter head structure schematic diagram of the present invention;
Fig. 4 is the big cutter head present invention looks up structural representation of the present invention;
Fig. 5 is the middle cutter head adjusting nut overlooking the structure diagram of the present invention;
Fig. 6 is the small bit tool adjusting nut overlooking the structure diagram of the present invention;
In figure:Cutter head adjusting nut, 4- screwdriver handles, 5- antiskid grooves, 6- are small in the big cutter heads of 1-, 2- handles rubber sleeve, 3- Cutter head, 9- small bit tools, 10- cutter heads groove, 11- pocket knives head slider, 12- small bit tools in cutter head adjusting nut, 7- screwdriver rods, 8- Angled-lift splits, 13- small bit tools adjustment slide bar, 14- small bit tools lift slide bar, 15- small bit tools carry cutter head lifting slide bar in tooth, 16-, Cutter head adjustment slide bar in cutter head angled-lift splits, 18- in 17-, cutter head row in cutter head nut internal tooth, 21- in cutter head sliding block, 20- in 19- In star gear, 22- in cutter head adjustment gear, 23- in cutter head internal chute, 24- cutter head regulation internal tooth, 25- pocket knife head nuts internal tooth, 26- small bit tools regulation internal tooth, 27- small bit tools adjustment gear, 28- small bit tools planetary gear, 29- adjustment gear external gear teeths.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Fig. 1-6 are referred to, the present invention provides a kind of technical scheme:A kind of screwdriver that can change cutter head size, including spiral shell Silk hilt hand 4, screwdriver rod 7 and big cutter head 1, the upper outside surfaces of screwdriver handle 4 are provided with antiskid groove 5, antiskid groove 5 Downside be provided with middle cutter head adjusting nut 3, the downside of middle cutter head adjusting nut 3 is provided with small bit tool adjusting nut 6, screwdriver The downside of handle 4 is provided with handle rubber sleeve 2, and screwdriver rod 7 is arranged on the downside surface middle position of screwdriver handle 4, Big cutter head 1 is arranged on the lower end of screwdriver rod 7, and the downside inner surface wall of big cutter head 1 is provided with middle cutter head 8, under the inner side of middle cutter head 8 Table wall is provided with small bit tool 9, and the inner side of small bit tool 9 is provided with cutter head groove 10, and the outside of cutter head groove 10 is provided with small bit tool Tooth 15 is carried, the upside of small bit tool 9 is provided with small bit tool lifting slide bar 14, and the outer surface of small bit tool lifting slide bar 14 is provided with Pocket knife head slider 11, the upside of small bit tool lifting slide bar 14 are provided with small bit tool adjustment slide bar 13, small bit tool adjustment slide bar 13 Outer surface is provided with small bit tool angled-lift splits 12, and the upside of middle cutter head 8 is provided with middle cutter head lifting slide bar 16, and middle cutter head lifting is slided The outer surface of bar 16 is provided with middle cutter head sliding block 19, and the upside of middle cutter head lifting slide bar 16 is provided with middle cutter head adjustment slide bar 18, the outer surface of middle cutter head adjustment slide bar 18 is provided with middle cutter head angled-lift splits 17, and the inner surface of middle cutter head adjusting nut 3 is set Middle cutter head nut internal tooth 20 is equipped with, the inner surface of middle cutter head nut internal tooth 20 is provided with middle cutter head planetary gear 21, middle cutter head The outer surface of planetary gear 21 is provided with middle cutter head adjustment gear 22 close to the outside of middle cutter head adjustment slide bar 18, and middle cutter head is adjusted The inner surface for saving gear 22 is provided with middle cutter head regulation internal tooth 24, middle cutter head close to the outer surface of middle cutter head adjustment slide bar 18 The inner surface of adjustment slide bar 18 is provided with middle cutter head internal chute 23, and the inner surface of small bit tool adjusting nut 6 is provided with pocket knife Head nut internal tooth 25, the inner surface of pocket knife head nut internal tooth 25 are provided with small bit tool planetary gear 28, small bit tool planetary gear 28 outer surface is provided with small bit tool adjustment gear 27, small bit tool regulation tooth close to the outer surface of small bit tool adjustment slide bar 13 The outer surface of wheel 27 is provided with adjustment gear external gear teeth 29, and the inner surface of small bit tool adjustment gear 27 adjusts close to small bit tool The outer surface of slide bar 13 is provided with small bit tool regulation internal tooth 26.
In order that large, medium and small cutter head must be facilitated to change the use shape of cutter head by stretching, so as to according to reality Environment is adjusted use, in the present embodiment, it is preferred that passes through middle cutter head sliding block 19 between middle cutter head 8 and big cutter head 1 and slides and connects Connect, be slidably connected between middle cutter head 8 and small bit tool 9 by pocket knife head slider 11.
In order that it must ensure conveniently to carry out cutter head telescopic adjustment, in the present embodiment, it is preferred that middle cutter head adjusting nut 3 It is slidably connected by neck between screwdriver handle 4, is slided between small bit tool adjusting nut 6 and screwdriver handle 4 by neck Dynamic connection.
In order that it must ensure accurately to carry out the tune of angle by the middle centering cutter head adjustment gear 22 of cutter head adjusting nut 3 It is whole, in the present embodiment, it is preferred that middle cutter head planetary gear 21 is provided with six altogether, and six middle cutter head planetary gears 21 are pacified Mounted in the inside of screwdriver handle 4, connected between middle cutter head planetary gear 21 and screwdriver handle 4 by axis of rotation, middle knife Connection, middle cutter head planetary gear are engaged by middle cutter head nut internal tooth 20 between head adjusting nut 3 and middle cutter head planetary gear 21 Connection is engaged by adjustment gear external gear teeth 29 between 21 and middle cutter head adjustment gear 22.
In order that the centering cutter head 8 of slide bar 18 must be adjusted by the middle cutter head between middle cutter head adjustment gear 22 and middle cutter head 8 Telescopic adjustment is carried out, in the present embodiment, it is preferred that pass through middle knife between middle cutter head adjustment gear 22 and middle cutter head adjustment slide bar 18 Head regulation internal tooth 24 is slidably connected, and is slidably connected between middle cutter head regulation internal tooth 24 and middle cutter head angled-lift splits 17 by neck.
In order that it must ensure accurately to carry out small bit tool adjustment gear 27 by small bit tool adjusting nut 6 tune of angle It is whole, in the present embodiment, it is preferred that small bit tool planetary gear 28 is provided with three altogether, and three small bit tool planetary gears 28 are pacified Mounted in the inside of screwdriver handle 4, connected between small bit tool planetary gear 28 and screwdriver handle 4 by axis of rotation, pocket knife Connection, pocket knife head nut internal tooth are engaged by pocket knife head nut internal tooth 25 between head adjusting nut 6 and small bit tool planetary gear 28 Connection is engaged by adjustment gear external gear teeth 29 between 25 and small bit tool adjustment gear 27.
In order that slide bar 13 must be adjusted by the small bit tool between small bit tool adjustment gear 27 and small bit tool 9 to small bit tool 9 Telescopic adjustment is carried out, in the present embodiment, it is preferred that pass through pocket knife between small bit tool adjustment gear 27 and small bit tool adjustment slide bar 13 Head regulation internal tooth 26 is slidably connected, and is slidably connected between small bit tool regulation internal tooth 26 and small bit tool angled-lift splits 12 by neck.
The operation principle and process for using of the present invention:After the present invention installs, it is necessary to when carrying out big model screw disassembling, By rotating small bit tool adjusting nut 6, pocket knife head nut internal tooth 25 is engaged with small bit tool planetary gear 28, makes small bit tool row The small bit tool adjustment gear 27 of the outer surface of star gear 28 is rotated, and then the small bit tool of the inner surface of small bit tool adjustment gear 27 is adjusted Save internal tooth 26 and the small bit tool adjustment slide bar 13 on the top of small bit tool 9 carries out sliding friction, small bit tool 9 is shunk, Ran Houtong Cutter head adjusting nut 3 in rotation is crossed, middle cutter head nut internal tooth is engaged friction with middle cutter head planetary gear 21, adjusts middle cutter head Section gear 22 is rotated, and the middle cutter head regulation internal tooth 24 and the middle cutter head on the middle top of cutter head 8 of the middle inner surface of cutter head adjustment gear 22 are adjusted Whole slide bar 18 carries out sliding friction, and middle cutter head 8 is risen, is then exerted a force by the carrying tooth on big cutter head 1, screw is twisted Open, when needing to turn on the screw of ting model, small bit tool adjusting nut 6 is inverted, small bit tool 9 declines, and is carried by small bit tool Tooth 15 exerts a force to screw, and small bit tool 9 lifts the pocket knife head slider 11 on slide bar 13 to bear circumferential load by small bit tool, The middle use of cutter head 8 is the same as small bit tool 9.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (7)

1. a kind of screwdriver that can change cutter head size, including screwdriver handle(4), screwdriver rod(7)With big cutter head(1), its It is characterised by:The screwdriver handle(4)Upper outside surfaces be provided with antiskid groove(5), the antiskid groove(5)Downside It is provided with middle cutter head adjusting nut(3), the middle cutter head adjusting nut(3)Downside be provided with small bit tool adjusting nut(6), institute State screwdriver handle(4)Downside be provided with handle rubber sleeve(2), the screwdriver rod(7)Installed in screwdriver handle(4)'s Downside surface middle position, the big cutter head(1)Installed in screwdriver rod(7)Lower end, the big cutter head(1)Downside in Table wall is provided with middle cutter head(8), the middle cutter head(8)Inner side following table wall be provided with small bit tool(9), the small bit tool(9)'s Inner side is provided with cutter head groove(10), the cutter head groove(10)Outside be provided with small bit tool carrying tooth(15), the pocket knife Head(9)Upside be provided with small bit tool lifting slide bar(14), the small bit tool lifting slide bar(14)Outer surface be provided with it is small Cutter head sliding block(11), the small bit tool lifting slide bar(14)Upside be provided with small bit tool adjustment slide bar(13), the small bit tool Adjust slide bar(13)Outer surface be provided with small bit tool angled-lift splits(12), the middle cutter head(8)Upside be provided with middle cutter head Lift slide bar(16), the middle cutter head lifting slide bar(16)Outer surface be provided with middle cutter head sliding block(19), the middle cutter head Lift slide bar(16)Upside be provided with middle cutter head adjustment slide bar(18), the middle cutter head adjustment slide bar(18)Outer surface set It is equipped with middle cutter head angled-lift splits(17), the middle cutter head adjusting nut(3)Inner surface be provided with middle cutter head nut internal tooth(20), The middle cutter head nut internal tooth(20)Inner surface be provided with middle cutter head planetary gear(21), the middle cutter head planetary gear (21)Outer surface close to middle cutter head adjust slide bar(18)Outside be provided with middle cutter head adjustment gear(22), the middle cutter head Adjustment gear(22)Inner surface close to middle cutter head adjust slide bar(18)Outer surface be provided with middle cutter head regulation internal tooth (24), the middle cutter head adjustment slide bar(18)Inner surface be provided with middle cutter head internal chute(23), the small bit tool regulation spiral shell It is female(6)Inner surface be provided with pocket knife head nut internal tooth(25), the pocket knife head nut internal tooth(25)Inner surface set There is small bit tool planetary gear(28), the small bit tool planetary gear(28)Outer surface close to small bit tool adjust slide bar(13)'s Outer surface is provided with small bit tool adjustment gear(27), the small bit tool adjustment gear(27)Outer surface be provided with regulation tooth Take turns external gear teeth(29), the small bit tool adjustment gear(27)Inner surface close to small bit tool adjust slide bar(13)Outer surface It is provided with small bit tool regulation internal tooth(26).
A kind of 2. screwdriver that can change cutter head size according to claim 1, it is characterised in that:The middle cutter head(8) With big cutter head(1)Between pass through middle cutter head sliding block(19)It is slidably connected, the middle cutter head(8)With small bit tool(9)Between by small Cutter head sliding block(11)It is slidably connected.
A kind of 3. screwdriver that can change cutter head size according to claim 1, it is characterised in that:The middle cutter head regulation Nut(3)With screwdriver handle(4)Between be slidably connected by neck, the small bit tool adjusting nut(6)With screwdriver handle (4)Between be slidably connected by neck.
A kind of 4. screwdriver that can change cutter head size according to claim 1, it is characterised in that:The middle cutter head planet Gear(21)Six, and six middle cutter head planetary gears are provided with altogether(21)It is installed in screwdriver handle(4)Inside, it is described Middle cutter head planetary gear(21)With screwdriver handle(4)Between connected by axis of rotation, the middle cutter head adjusting nut(3)With Middle cutter head planetary gear(21)Between pass through middle cutter head nut internal tooth(20)Engagement connection, the middle cutter head planetary gear(21)With Middle cutter head adjustment gear(22)Between pass through adjustment gear external gear teeth(29)Engagement connection.
A kind of 5. screwdriver that can change cutter head size according to claim 1, it is characterised in that:The middle cutter head regulation Gear(22)Slide bar is adjusted with middle cutter head(18)Between pass through middle cutter head adjust internal tooth(24)It is slidably connected, the middle cutter head regulation Internal tooth(24)With middle cutter head angled-lift splits(17)Between be slidably connected by neck.
A kind of 6. screwdriver that can change cutter head size according to claim 1, it is characterised in that:The small bit tool planet Gear(28)Three, and three small bit tool planetary gears are provided with altogether(28)It is installed in screwdriver handle(4)Inside, it is described Small bit tool planetary gear(28)With screwdriver handle(4)Between connected by axis of rotation, the small bit tool adjusting nut(6)With Small bit tool planetary gear(28)Between pass through pocket knife head nut internal tooth(25)Engagement connection, the pocket knife head nut internal tooth(25)With Small bit tool adjustment gear(27)Between pass through adjustment gear external gear teeth(29)Engagement connection.
A kind of 7. screwdriver that can change cutter head size according to claim 1, it is characterised in that:The small bit tool regulation Gear(27)Slide bar is adjusted with small bit tool(13)Between internal tooth adjusted by small bit tool(26)It is slidably connected, the small bit tool regulation Internal tooth(26)With small bit tool angled-lift splits(12)Between be slidably connected by neck.
CN201710904174.4A 2017-11-16 2017-11-16 A kind of screwdriver that can change cutter head size Active CN107529481B (en)

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CN201710904174.4A CN107529481B (en) 2017-11-16 2017-11-16 A kind of screwdriver that can change cutter head size

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CN201710904174.4A CN107529481B (en) 2017-11-16 2017-11-16 A kind of screwdriver that can change cutter head size

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CN107529481B CN107529481B (en) 2019-04-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108814706A (en) * 2018-05-18 2018-11-16 奚修全 Multifunctional screwdriver for orthopedics department
CN110043535A (en) * 2019-04-22 2019-07-23 浙江农业商贸职业学院 A kind of automobile compensation nut

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201799978U (en) * 2010-08-16 2011-04-20 金力 Novel multi-bit screwdriver
CN202572251U (en) * 2012-03-30 2012-12-05 宁波市鄞州永佳电机工具有限公司 Multi-bit screwdriver
CN202640244U (en) * 2012-04-10 2013-01-02 苏州唐峰金属制品有限公司 Multi-head screwdriver
CN204748451U (en) * 2015-07-17 2015-11-11 魏逸安 General screwdriver
US20170232590A1 (en) * 2016-02-16 2017-08-17 Patrick Clifford Multiple bit adapter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201799978U (en) * 2010-08-16 2011-04-20 金力 Novel multi-bit screwdriver
CN202572251U (en) * 2012-03-30 2012-12-05 宁波市鄞州永佳电机工具有限公司 Multi-bit screwdriver
CN202640244U (en) * 2012-04-10 2013-01-02 苏州唐峰金属制品有限公司 Multi-head screwdriver
CN204748451U (en) * 2015-07-17 2015-11-11 魏逸安 General screwdriver
US20170232590A1 (en) * 2016-02-16 2017-08-17 Patrick Clifford Multiple bit adapter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108814706A (en) * 2018-05-18 2018-11-16 奚修全 Multifunctional screwdriver for orthopedics department
CN110043535A (en) * 2019-04-22 2019-07-23 浙江农业商贸职业学院 A kind of automobile compensation nut

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