CN103507018A - Multi-rotation device - Google Patents
Multi-rotation device Download PDFInfo
- Publication number
- CN103507018A CN103507018A CN201310505569.9A CN201310505569A CN103507018A CN 103507018 A CN103507018 A CN 103507018A CN 201310505569 A CN201310505569 A CN 201310505569A CN 103507018 A CN103507018 A CN 103507018A
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- CN
- China
- Prior art keywords
- gear
- ratchet
- planet gears
- shaft
- shell body
- 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
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/325—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising a carrier with pins guiding at least one orbital gear with circular holes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention relates to a multi-rotation device. The multi-rotation device comprises a gear shaft, a gear seat, a clutch gear, minor planet gears, major planet gears and a housing body, wherein the gear seat is fixedly arranged in the housing body; the major planet gears are fixedly arranged on the gear seat; the minor planet gears are coaxially arranged above the major planet gears; the clutch gear with a shaft hole formed in the middle is meshed with the minor planet gears; a strip-shaped gear is arranged at the lower end of a gear shaft and penetrates a hollow shaft and the clutch gear to be meshed with the major planet gears. When the housing body rotates a circle, the multiple is adjusted according to different teeth of the major planet gears and the minor planet gears, the gear shaft can achieve multi-rotation, and the screwdriver adopting the multi-rotation device can convey multi-rotation speed, so that the screw tightening speed is greatly increased.
Description
Technical field
The present invention relates to a kind of multiple tumbler.
Background technology
Existing screwdriver is at handle front end and sets firmly a metal-made mobile jib, and mobile jib free end is provided with the pulling part of cross or a word shape, grips handle in use with palm, and continues rotation, by handle, drives pulling part to rotate, so that as loosening, tighten bolt.When this screwdriver uses, user need constantly loosen, tighten the action of palm, be in and be easy to force application location along tooth, and handle, pulling part is structure as a whole in order to palm, therefore the action that user must constantly loosen, tighten palm operates, and uses very inconvenient.
In order to solve above-mentioned technical problem, Chinese invention patent (application number: 200810121667, the applying date: on October 27th, 2008) disclose ratchet screwdriver and ratchet device thereof, this device comprises pawl seat, outer collar, pawl base and two ratchets, pawl seat is set on pawl base, the inner ring of pawl seat is provided with the ratchet with ratchet engagement, on the sidewall of pawl base both sides, be respectively arranged with hinged groove, two ratchets are hinged being arranged in hinged groove respectively, and on pawl base, be provided with and make ratchet to both sides, open the back-moving spring keeping with ratchet engagement; Wild card snare is located at the outside of two ratchets, the inner ring of outer collar is provided with arc-shaped notch, and the outer end of two ratchets is contained in arc-shaped notch, and arc-shaped notch has two chimbs, outside a sideway swivel during collar, chimb inwardly ratchet of compressing makes it depart from and mesh with ratchet.This patent can be born larger moment of torsion, has feature simple in structure, can be subject to high pulling torque, long service life.
In addition, Chinese invention patent (application number: 201010107089 applyings date: on February 8th, 2010) disclose screw driver ratchet device and the application thereof of built-in ratchet, comprised pawl base, ratchet shaft, outer collar and two ratchets; The both sides of the annular solid central shaft hole of pawl base are respectively equipped with ratchet installing port, and ratchet is separately positioned in ratchet installing port; Ratchet shaft links into an integrated entity ratchet shaft, outer collar and pawl base; Ratchet is arch bridge type, is provided with boss and ratchet on ratchet, is provided with bar shaped tooth on ratchet shaft, is respectively arranged with and makes ratchet and bar shaped tooth keep the stage clip of engagement in ratchet installing port; The inner ring of the annular sidewall of outer collar is provided with two recesses, is provided with Yi Ge inclined-plane on recess, and the boss outside a sideway swivel on a ratchet of collar Shi， inclined-plane compressing makes the ratchet of this ratchet and bar shaped tooth depart from engagement.
Chinese invention patent (application number: 201210297899 applyings date: on August 21st, 2012) disclose a kind of screw driver ratchet device and used this ratchet device screwdriver,, this ratchet device comprises pawl base, ratchet shaft, outer collar and two ratchets.Ratchet device is normally in locking-in state, when clockwise turn wild card circle, the described projection promotion left side ratchet of stirring moves laterally along the first inclined-plane, ratchet on the left of making on ratchet and described bar shaped tooth depart from engagement, ratchet device is in being rotated counterclockwise state, and when the outer collar of turn counterclockwise, the described projection promotion rightward pawl of stirring is moved laterally along the first inclined-plane, make ratchet in rightward pawl and described bar shaped tooth depart from engagement, ratchet device is in the state of turning clockwise.
Three kinds of above-mentioned ratchet devices are all ratchet devices that applicant applies for, there is different features, but unique deficiency is that three kinds of ratchet devices are all that haploidy number rotates, if having the screw driver ratchet device of many times of rotations, can greatly improve the speed that turns of screw.
In order to realize above-mentioned object, applicant has applied for a kind of multiple running ratchet train, this device comprises ratchet device and multiple tumbler, described ratchet device comprises that ratchet wheel body, ratchet circle, ratchet roll nail and hollow shaft, described multiple tumbler comprises pinion stand, clutch gear, mafor planet gear and shell body, and a rooted tooth wheel shaft connects described ratchet device and multiple tumbler; Described ratchet circle consists of cylinder and annular solid, the middle part of ratchet circle is provided with axial mesopore, mesopore runs through described cylinder and annular solid, described annular solid is by stirring outer ring and middle terminal pad forms, described cylinder is fixedly installed on middle terminal pad, the outer wall of cylinder is circumferentially uniform is provided with many axial straight troughs, the upper and lower end sealing of straight trough; The upper end of described gear shaft is plugged in mesopore, end at gear shaft is provided with cylindrical boss, the diameter of cylindrical boss and the diameter of mesopore are suitable, and the hollow shaft described in sheathed on gear shaft below cylindrical boss, the external diameter of hollow shaft and the equal diameters of cylindrical boss; In many described straight troughs, be respectively arranged with described ratchet and roll nail, ratchet rolls the inner side of nail and the outer surface of hollow shaft and cylindrical boss offsets, and ratchet rolls the outside protrusion straight trough setting of nail; Described ratchet wheel body is set in the outer surface of cylinder, by body and centring ring, formed, the inner surface of body is provided with deep-slotted chip breaker in the corresponding position of straight trough, the outside that ratchet rolls nail is contained in deep-slotted chip breaker, described centring ring is arranged on the bottom of body, centring ring provides at least Liang Ge position location ，Liang Ge position location to make respectively the urgent ratchet of a side pressure of deep-slotted chip breaker roll nail, makes hollow shaft and cylindrical boss in mesopore, be merely able to one-directional rotation; Described pinion stand is fixedly installed in shell body, on pinion stand, be fixedly installed a plurality of described mafor planet gears, the top of mafor planet gear arranges coaxial small planetary gear, described clutch gear is meshed with small planetary gear, clutch gear upper end is in transmission connection mutually with hollow shaft, the middle part of clutch gear is provided with axis hole, and the lower end of described gear shaft is strip gear, and strip gear is meshed with described mafor planet gear through hollow shaft and clutch gear.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of multiple tumbler, this crust of the device body rotates a circle, gear shaft can obtain multiple and rotate, screwdriver can be carried the velocity of rotation of many times after adopting this multiple tumbler, can greatly improve the speed that turns of screw.
In order to realize above-mentioned object, the present invention has adopted following technical scheme.
Multiple tumbler, this device comprises gear shaft, pinion stand, clutch gear, small planetary gear, mafor planet gear and shell body, described pinion stand is fixedly installed in shell body, on pinion stand, be fixedly installed a plurality of described mafor planet gears, the top of mafor planet gear arranges coaxial small planetary gear, described clutch gear is meshed with small planetary gear, the middle part of clutch gear is provided with axis hole, the lower end of described gear shaft is strip gear, and strip gear is meshed with described mafor planet gear through hollow shaft and clutch gear.
As preferably, described clutch gear upper end is provided with bulge loop, and hollow shaft is plugged in bulge loop and is connected by key with bulge loop.
As preferably, described mafor planet gear and small planetary gear are respectively 2,3 or 4; As preferably, described pinion stand is two triangular plates, and triangular plate fixes by bearing pin, and described mafor planet gear and small planetary gear are arranged on bearing pin.
As preferably, inner chamber and the pinion stand of described shell body are suitable, and above shell body, are provided with end cap, the inner chamber of end cap closure body, below end cap, be provided with steady pin, described shell body is provided with corresponding pin-and-hole, and steady pin is plugged in pin-and-hole.
The present invention is owing to having adopted above-mentioned technical scheme, this crust of the device body rotates a circle, by the number of teeth different adjustment multiple of mafor planet gear and small planetary gear, gear shaft can obtain multiple and rotate, screwdriver can be carried the velocity of rotation of many times after adopting this multiple tumbler, can greatly improve the speed that turns of screw.
Accompanying drawing explanation
Fig. 1 is the structural representation of screwdriver of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the blast structural representation of screwdriver of the present invention.
Fig. 4 is the structural representation of multiple tumbler of the present invention.
Fig. 5 is the blast structural representation of multiple tumbler of the present invention.
Fig. 6 is the structural representation of ratchet circle of the present invention.
Fig. 7 is the upward view of Fig. 6.
Fig. 8 is the B-B cutaway view of Fig. 6.
Fig. 9 is the structural representation of ratchet lid of the present invention.
Figure 10 is the C-C cutaway view of Fig. 9.
Figure 11 is the structural representation of ratchet wheel body of the present invention.
Figure 12 is the upward view of Figure 11.
Figure 13 is the D-D cutaway view of Figure 11.
Figure 14 is the structural representation of gear shaft of the present invention.
Figure 15 is the structural representation of shell body of the present invention.
Figure 16 is the structural representation of clutch gear of the present invention.
Figure 17 is the E-E cutaway view of Figure 16.
Figure 18 is the structural representation of upper triangular plate of the present invention.
Figure 19 is the structural representation of lower triangular plate of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
A kind of screwdriver as shown in Fig. 1 ~ 3, this screwdriver comprises handle 1, cutter head 53, cutter head storage facilities 5, multiple tumbler and extension bar 4, cutter head storage facilities 5 is arranged in handle 1, cutter head 53 is placed in cutter head storage facilities 5, described multiple tumbler upper end is fixedly installed on handle 1 Shang， lower end and is connected with extension bar 4.As shown in Figure 2 and Figure 3, described cutter head storage facilities 5 comprises cavity 19, bonnet 51 and cutter head support 54, cavity 19 is arranged on the upper end of handle 1, between cutter head support 54 and bonnet 51, be provided with connecting rod 57, connecting rod 57 is one-body molded with cutter head support 54, connecting rod 57 hollows are fixedly installed on bonnet 51 by screw 56, bonnet 51 is provided with the fixing lug boss 52 suitable with cavity 19, fixing lug boss 52 both sides are provided with buckle 58, and at the arranged outside bayonet socket 18 of cavity 19, bonnet 51 is connected on cavity 19 by buckle 58 clamping bayonet sockets 18.Described cutter head support 54 circumferentially arranges a plurality of mounting grooves 55, and described cutter head 53 clampings are arranged in mounting groove 55.Described extension bar 4 is provided with cutter head installing port 42, is provided with magnet steel 41 in cutter head installing port 42.
Multiple tumbler as shown in Figure 4, Figure 5, this device comprises ratchet device 2 and multiple tumbler 3, described ratchet device 2 comprises that ratchet wheel body 7, ratchet circle 8, ratchet lid 9, ratchet roll nail 24 and hollow shaft 23, described multiple tumbler 3 comprises that pinion stand 12, clutch gear 11, end cap 10, mafor planet gear 13 and shell body 16, one rooted tooth wheel shafts 6 connect described ratchet device 2 and multiple tumbler 3.As shown in Fig. 6 ~ Fig. 8, described ratchet circle 8 consists of cylinder 81 and annular solid 82, the middle part of ratchet circle 8 is provided with axial mesopore 21, mesopore 21 runs through described cylinder 81 and annular solid 82, described annular solid 82 is by stirring outer ring 83 and middle terminal pad 84 forms, described cylinder 81 is fixedly installed on middle terminal pad 84, the outer wall of cylinder 81 is circumferentially uniform is provided with four axial straight troughs 85, the upper end closed of straight trough 85, lower ending opening also extends to middle terminal pad 84 bottom surface, and the lid of the ratchet described in arranging in middle terminal pad 84 bottom surface 9.As shown in Figure 9, Figure 10, the middle part of ratchet lid 9 is provided with the through hole 92 that can pass for hollow shaft 23, and ratchet covers 9 tops and is provided with four projections 92, the lower ending opening of projection 92 sealing straight troughs 85.And outer ring is provided with fixedly ring 93 above ratchet lid 9, fixedly ring 93 is provided with fixed claw 94, and is provided with annular mouth 87 on middle terminal pad 84, and fixed claw 94 be located in annular mouth 87.
The upper end of described gear shaft 6 is plugged in mesopore 21 as shown in Figure 4, Figure 5, in the end of gear shaft 6, is provided with cylindrical boss 61, and the diameter of the diameter of cylindrical boss 61 and mesopore 21 is suitable.And the hollow shaft 23 described in sheathed on gear shaft 6 below cylindrical boss 61, the equal diameters of the external diameter of hollow shaft 23 and cylindrical boss 61.Between hollow shaft 23 and cylindrical boss 61, be provided with spacer 25, described spacer 25 is set in the below of cylindrical boss 61, and spacer 25 is respectively arranged with isolation lug 28 towards straight trough 85 position.Isolation lug 28 is divided into upper and lower two sections by straight trough 85, in upper and lower two sections of straight troughs 85, be respectively equipped with described ratchet and roll nail 24, ratchet in upper and lower two sections of straight troughs 85 rolls nail 24 inner sides and offsets with hollow shaft 23 and cylindrical boss 61 respectively, and the outside protrusion straight trough 85 that ratchet rolls nail 24 arranges.Described ratchet wheel body 7 is set in the outer surface of cylinder 81, by body 71 and centring ring 72, formed, the inner surface of body 71 is provided with deep-slotted chip breaker 76 in the corresponding position of straight trough 85, and the outside that ratchet rolls nail 24 is contained in deep-slotted chip breaker 76, and described centring ring 72 is arranged on the bottom of body 71.As shown in Figure 11 ~ Figure 13, the inner ring of described centring ring 72 is provided with triangular hill 74, and triangle 74 forms two limited mouths 75 with the connecting portion of inner ring.As shown in Figure 5, middle terminal pad 84 is provided with retainer spring part 26, retainer spring Jian26 one end is fixed on the fixing port 88 of middle terminal pad 84, fit and be arranged on middle terminal pad 84 bottom surface for arc body in centre, the other end forms noses through middle terminal pad 84 through mouth 89, nose is fastened on a limited mouth 75 and forms Yi Ge position location, centring ring 72 provides Liang Ge position location, Liang Ge position location makes respectively a side pressure of deep-slotted chip breaker 76 compel ratchet and rolls nail 24, makes hollow shaft 23 and cylindrical boss 61 be merely able to one-directional rotation in mesopore 21.
As shown in Fig. 4, Figure 14, the upper end of described gear shaft 6 is provided with spindle nose 60, and above cylindrical boss 61, be provided with step bulge loop 63, in the mesopore 21 of ratchet circle 8, be provided with position limiting convex ring 86, step bulge loop 63 offsets with position limiting convex ring 86, and be provided with through hole 73 on body 71 top, described spindle nose 60 is through mesopore 21 and through hole 73, at spindle nose 60, be provided with annular groove 64, the interior slotted collar 27 that arranges of annular groove 64, the outside that slotted collar 27 is arranged on through hole 73 provides spacing for spindle nose 60 and through hole 73.
As shown in Figure 4, Figure 5, described pinion stand 12 is fixedly installed in shell body 16, is fixedly installed the mafor planet gear 13 described in three on pinion stand 12, and the top of mafor planet gear 13 arranges coaxial small planetary gear 14.As shown in Figure 18, Figure 19, described pinion stand 12 is two triangular plates, upper triangular plate 121 has the mesopore passing for clutch gear 11, lower triangular plate 122 has the mesopore passing for gear shaft 6, upper and lower triangular plate fixes by bearing pin 15, and described mafor planet gear 13 and small planetary gear 14 are arranged on bearing pin 15.Described clutch gear 11 is meshed with small planetary gear 14 through upper triangular plate 121.As shown in Figure 16, Figure 17, clutch gear 11 upper ends are provided with bulge loop 110, and hollow shaft 23 is plugged in bulge loop 110 and is in transmission connection mutually by key 111 with bulge loop 110.The middle part of described clutch gear 11 is provided with axis hole 112, and the lower end of described gear shaft 6 is strip gear 62, and strip gear 62 is meshed with described mafor planet gear 13 through hollow shaft 23 and clutch gear 11.The end of gear shaft 6 is fixedly connected with extension bar 4 through lower triangular plate 122.As shown in figure 15, inner chamber and the pinion stand 12 of described shell body 16 are suitable, and above shell body 16, be provided with end cap 10, the inner chamber of end cap 10 closure bodies 16, below end cap 10, be provided with steady pin 101, described shell body 16 is provided with corresponding pin-and-hole 160, and steady pin 101 is plugged in pin-and-hole 160.
Claims (5)
1. multiple tumbler, it is characterized in that: this device comprises gear shaft (6), pinion stand (12), clutch gear (11), mafor planet gear (13), small planetary gear (14) and shell body (16), described pinion stand (12) is fixedly installed in shell body (16), on pinion stand (12), be fixedly installed a plurality of described mafor planet gear (13) and small planetary gears (14), mafor planet gear (13) and small planetary gear (14) coaxially arrange, described clutch gear (11) is meshed with small planetary gear (14), the middle part of clutch gear (11) is provided with axis hole (112), the lower end of described gear shaft (6) is strip gear (62), strip gear (62) is meshed with described mafor planet gear (13) through hollow shaft (23) and clutch gear (11).
2. multiple tumbler according to claim 1, is characterized in that: clutch gear (11) upper end is provided with bulge loop (110), and hollow shaft (23) is plugged in bulge loop (110) and is connected by key (111) with bulge loop.
3. multiple tumbler according to claim 1, is characterized in that: mafor planet gear (13) and small planetary gear (14) are respectively 2,3 or 4.
4. multiple tumbler according to claim 1, it is characterized in that: described pinion stand (12) is two triangular plates, triangular plate fixes by bearing pin (15), and described mafor planet gear (13) and small planetary gear (14) are arranged on bearing pin (15).
5. multiple tumbler according to claim 1, it is characterized in that: the inner chamber of shell body (16) and pinion stand (12) are suitable, and be provided with end cap (10) in the top of shell body (16), the inner chamber of end cap (10) closure body (16), in the below of end cap (10), be provided with steady pin (101), described shell body (16) is provided with corresponding pin-and-hole (160), and steady pin (101) is plugged in pin-and-hole (160).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505569.9A CN103507018A (en) | 2013-10-23 | 2013-10-23 | Multi-rotation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505569.9A CN103507018A (en) | 2013-10-23 | 2013-10-23 | Multi-rotation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103507018A true CN103507018A (en) | 2014-01-15 |
Family
ID=49890724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310505569.9A Pending CN103507018A (en) | 2013-10-23 | 2013-10-23 | Multi-rotation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103507018A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108789255A (en) * | 2018-09-10 | 2018-11-13 | 绍兴环洲工具制造有限公司 | Hand-held tool ratchet accelerator |
| CN109159069A (en) * | 2018-10-30 | 2019-01-08 | 淮阴工学院 | The transmission mechanism of gun-type screw wrenching tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3445111A1 (en) * | 1984-12-11 | 1986-06-12 | Holland-Letz, Günter, 4790 Paderborn | Screwdriver with gear transmission |
| US5406866A (en) * | 1992-02-06 | 1995-04-18 | Badiali; John A. | Speed-selectable screwdriver |
| DE29616739U1 (en) * | 1996-09-18 | 1996-11-07 | Lin, Ching Chou, Wu Zh Hsiang, Taichung | screwdriver |
| CN202462319U (en) * | 2012-01-17 | 2012-10-03 | 工丰企业股份有限公司 | Speedup structure of ratchet screwdriver |
| CN203510062U (en) * | 2013-10-23 | 2014-04-02 | 浙江三鼎工具有限公司 | Multifold rotator |
-
2013
- 2013-10-23 CN CN201310505569.9A patent/CN103507018A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3445111A1 (en) * | 1984-12-11 | 1986-06-12 | Holland-Letz, Günter, 4790 Paderborn | Screwdriver with gear transmission |
| US5406866A (en) * | 1992-02-06 | 1995-04-18 | Badiali; John A. | Speed-selectable screwdriver |
| DE29616739U1 (en) * | 1996-09-18 | 1996-11-07 | Lin, Ching Chou, Wu Zh Hsiang, Taichung | screwdriver |
| CN202462319U (en) * | 2012-01-17 | 2012-10-03 | 工丰企业股份有限公司 | Speedup structure of ratchet screwdriver |
| CN203510062U (en) * | 2013-10-23 | 2014-04-02 | 浙江三鼎工具有限公司 | Multifold rotator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108789255A (en) * | 2018-09-10 | 2018-11-13 | 绍兴环洲工具制造有限公司 | Hand-held tool ratchet accelerator |
| CN108789255B (en) * | 2018-09-10 | 2023-11-07 | 绍兴环洲工具制造有限公司 | Ratchet accelerating device for hand tool |
| CN109159069A (en) * | 2018-10-30 | 2019-01-08 | 淮阴工学院 | The transmission mechanism of gun-type screw wrenching tool |
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| PB01 | Publication | ||
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Application publication date: 20140115 |