CN102990589A - Portable handheld tool - Google Patents
Portable handheld tool Download PDFInfo
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- CN102990589A CN102990589A CN2011102759179A CN201110275917A CN102990589A CN 102990589 A CN102990589 A CN 102990589A CN 2011102759179 A CN2011102759179 A CN 2011102759179A CN 201110275917 A CN201110275917 A CN 201110275917A CN 102990589 A CN102990589 A CN 102990589A
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- motor
- held tool
- portable hand
- host shell
- screwdriver
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Abstract
The invention discloses a screwdriver, which comprises a main machine shell, a working part which is arranged at one end of the main machine shell, a motor which is arranged in the main machine shell and is used for driving the working part, and a battery unit which is used for providing energy to the motor. The portable handheld tool is slender. The ratio of the longitudinal size to the transverse size of the portable handheld tool is set to be between 4.4 and 12.5. The screwdriver is convenient to carry and labor-saving to operate.
Description
Technical field
The present invention relates to a kind of portable hand-held tool.
Background technology
Common portable hand-held tool on the market, such as electrician's screwdriver, its have the functions such as electroprobe, insulation concurrently and volume little, so the handled easily person carries when carrying out the installation, maintenance operation.But this electrician's screwdriver often adopts manual operation, and stubborn screw is not only time-consuming but also require great effort, and does not utilize and increases work efficiency.
Known electric screwdriver, its function singleness, again because it has adopted high-power common electric machine, and the power brick capacious that is used for drive motors work, and some metal transmission devices, its volume and weight are that several times of common electrician's screwdriver are to tens times, are not suitable for carrying for the place of some work high above the ground.In addition, may also need to change or select other instrument of difference in functionality in the work, so the electric screwdriver of function singleness can not satisfy the demands when operation; In addition, in order to satisfy the needs of twisting different screws or to be fit to different operating modes, the power of motor of employing is relatively large, and the cost of electric screwdriver is relatively high.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of handheld tool of easy to carry and rapid operation.
The present invention is achieved in that a kind of portable hand-held tool, comprise: host shell, be arranged at the workpiece of host machine casing one end, be provided with in the described host shell for the motor that drives the working position, and the battery unit that energy is provided for motor, described portable hand-held tool is elongated shape, and the ratio of its longitudinal size and lateral dimension arranges scope between 4.4 to 12.5.
Described portable hand-held tool considers that preferably the ratio of longitudinal size and lateral dimension arranges scope between 7 to 8.The longitudinal size of portable hand-held tool arranges scope between 200mm to 350mm.The lateral dimension of portable hand-held tool arranges scope between 28mm to 45mm.
Described host shell has the host shell axis that lengthwise extends, the motor axis of described motor and host shell dead in line or parallel.The axis of described battery unit and host shell dead in line or parallel.Described workpiece is parallel with the host shell axis or overlap.
Described motor comprises at least two electro-motors, and described electro-motor is serially connected with in the host shell.Be provided with shaft coupling between the described electro-motor, described shaft coupling is set to torsion spring.
It is elongated cylindrical that the profile of described electro-motor is.The L/D ratio value of described electro-motor arranges scope between 1.2 to 2.6; The L/D ratio value that preferred consideration is selected is about 1.5.
Described electro-motor comprises two motors that characteristic is identical.The diameter of described electro-motor is identical.
Described host shell is provided with the survey electric installation, and described survey electric installation comprises and is used to indicate whether charged indicator elment of surveyed area.Described indicator elment is neon tube.
The periphery of described workpiece is provided with insulating materials, and described motor is double insulation motor, and the motor drive shaft of described motor is provided with insulating materials.
Be provided with between described motor and the workpiece the transmission of power of the motor transmission mechanism to workpiece.Described transmission mechanism comprises overall plastic gear mechanism, is provided with gear box casing in the described host shell, and transmission mechanism is arranged in the gear box casing, and described gear box casing is made by plastic material.
Described host shell is provided with the control piece of the described motor of control, and when control piece control motor operations, described portable hand-held tool is in electric model, and when control piece control motor was not worked, described portable hand-held tool was in manual mode.
Described workpiece is connected with main shaft, is provided with the self-locking device for the locking main shaft between described main shaft and the motor.Be provided with transmission mechanism between described motor and the workpiece, described transmission mechanism comprises the output planet carrier, described self-locking device comprises and the relatively-stationary transfer panel of main shaft, and with the relatively-stationary fixed disk of host shell, described fixed disk is provided with inner headed face, described transfer panel is arranged within the scope of inner headed face, the periphery of described transfer panel has a plurality of planes, transfer panel is provided with the connecting portion that is connected with the output planet carrier, the capable frame of described output comprises that a plurality of legs extend between described plane and the inner headed face, are respectively arranged with roller between the described adjacent leg.
Beneficial effect of the present invention: the handheld tool among the present invention has adopted the longitudinal size that is fit to and lateral dimension than scope, so that fuselage size convenient operation and carrying; Because adopted two vertically to arrange fractional motor, the diameter that is conducive to reduce cost, particularly motor is little, more is conducive to do the handheld tool size little; Because adopt overall plastic planetary gear mechanism, so weight saving, operation lightly is easy to carry; Owing to being provided with the main shaft self-locking mechanism, so this handheld tool is not only applicable to electronicly, and is applicable to manually make more convenient operation; Because handheld tool is provided with the survey electric installation, be a multiple occasion and the easy to operate portable hand-held tool of being applicable to therefore.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the schematic perspective view of the screwdriver of the specific embodiment of the invention.
Fig. 2 is specific embodiment of the invention screwdriver partial schematic sectional view
Fig. 3 is the structural representation of the shaft coupling of specific embodiment of the invention screwdriver.
Fig. 4 is along the cutaway view of B-B direction among Fig. 3.
Fig. 5 is that cut-away view is amplified in the part of transmission mechanism among Fig. 2.
Fig. 6 is the three-dimensional exploded view of the self-locking device of specific embodiment of the invention screwdriver.
Fig. 7 is along the cutaway view of A-A direction among Fig. 5.
Fig. 8 is the use state reference map (spindle axis counterclockwise rotation this moment) of self-locking device among Fig. 7.
Fig. 9 is the use state reference map (this moment, main shaft turned clockwise) of self-locking device among Fig. 7.
Figure 10 is the schematic perspective view of the charging device of specific embodiment of the invention screwdriver.
Figure 11 is that specific embodiment of the invention screwdriver is coupled to the charging device schematic perspective view in when charging.
Wherein:
1-host shell 9a-gear box casing 31-fixed disk
2-handle portion 10-screwdriver 32-is pin fixedly
2a-inner chamber 11-PCB plate 33-inner headed face
3-workpiece 12-control piece 34-transfer panel
The flat square hole of 3a-cavity 12a-forward control knob 35-
3b-insulating barrier 12b-counter-rotating control knob 36-plane
4-magnet 13-neon tube 37-roller
5-battery unit 14-power spring 38-spline tooth
6-the first motor 15-resistance 40-output planet carrier
6a-the first motor drive shaft 16-metal end 41-leg
6b-notch 17-wire 50-charging device
7-the second motor 18-self-locking device 51-pedestal
7a-the second motor drive shaft 19-charging inlet 52-supporting walls
7b-notch 20-surveys electric installation 52a-receiving space
8-torsion spring 21-transparent window 53-indicator lamp
8 '-torsion spring head end 23-main shaft 54-wire
8 "-the terminal 24-plat part of torsion spring X1-axis
The 9-transmission mechanism
The specific embodiment
With reference to Fig. 1, shown in Figure 2, portable hand-held tool is a kind of screwdriver 10, it comprises the host shell 1 that lengthwise extends, workpiece 3 is arranged at an end of host shell 1, the other end of relative workpiece 3 is handle portion 2 that gripping is provided when operation on the host shell 1, is provided with the control piece 12 for control operate portions 3 on the host shell 1.Host shell 1 has the axis X 1 of a longitudinal extension, and wherein workpiece 3 is along vertically arranging with body shell 1, and the workpiece of the present embodiment is coaxial setting with host shell 1, also can be arranged in parallel with host shell axis X 1.Host shell 1 can adopt two Hafu-type housings to be interlocked, and perhaps is fixed connection by screw or other fastening means, also can adopt a plurality of cylindrical shells to be joined together to form host shell 1 by suitable mode.
With further reference to shown in Figure 2, workpiece 3 is positioned at the front portion of host shell 1, workpiece 3 is made by metal material usually, be used for clamping or fixing working head (not shown) of not planting specification and shape, first-class in to satisfy the needs of different operating modes such as in-line, cross or star work.The front end of workpiece 3 is provided with the cavity 3a of fixing or clamping working head, and cavity 3a bottom is provided with magnet 4, and the setting of magnet 4 is convenient to working head in location and the installation of cavity 3a.
Be provided with the first motor 6 and the second motor 7 that drive workpiece 3 in the host shell 1.The first motor 6 in the present embodiment and the second motor 7 are two identical motors of characteristic, it is elongated cylindrical that its profile is, and be serially connected with in the host shell 1 along host shell 1 longitudinal axis X1, and the motor axis of the first motor 6 and the second motor 7 and axis X 1 bearing of trend of host shell 1 are consistent, motor axis in the present embodiment is coaxial setting with the axis X 1 of host shell 1, can certainly be arranged in parallel.The first motor 6 and the second motor 7 are electronic fractional motor, what export is high rotating speed and high pulling torque, for example can adopt the standard motor, brand is that horse-ride step neat (Mabuchi), model RC380, specification are the electronic fractional motor of φ 24mm*31mm, rated output power 5.5w.Also can be according to the concrete size of screwdriver shape need design motor, for example the diameter of motor and length dimension can adopt φ 12mm*26.9mm, φ 15.4mm*32.1mm, φ 16mm*25mm, perhaps φ 21mm*31mm, φ 38.5mm*65mm etc., the L/D ratio example scope of paying the utmost attention to motor is set between 1.2 to 2.6, and it is about 1.5 that the ratio between length and the diameter is paid the utmost attention to.Owing to having adopted above-mentioned fractional motor, screwdriver 10 can be set to elongated shape, certainly, screwdriver 10 cross sectional dimensions on its lengthwise bearing of trend is can be slightly vicissitudinous, the lateral dimension that for example holds host shell 1 part of motor and gear-box and handle portion 2 can be incomplete same, is elongated shape on the whole but do not affect screwdriver 10; The cross section of screwdriver 10 can adopt different shapes such as circle, ellipse, triangle, similar rectangle, if screwdriver is arranged to elongated cylindrical, then its maximum gauge can be selected φ 32mm, φ 42mm etc.; Its longitudinal size can be selected 250mm, 320mm, 326mm etc.; In a word, the longitudinal size of screwdriver 10 and the ratio of lateral dimension are arranged scope between 4.4 to 12.5, preferably between 7 to 8, such size that is arranged so that electrician's screwdriver 10 is fit to operation and is easy to carry.
Wherein the first motor 6 relative the second motors 7 arrange near workpiece component 3, be provided with transmission mechanism 9 between the first motor 7 and the workpiece 3, transmission mechanism 9 is contained in the gear box casing 9a in the body shell 1, and the rotation of the first motor 6a and the second motor 6b is passed to workpiece 3 by transmission mechanism 9.As required, the transmission mechanism 9 in the gear box casing 9a can be arranged to primary gear speed reducing mechanism or multi-stage gear reducing gear, can regulate the output speed of workpiece 3 by control piece is set when the multi-stage gear reducing gear is set.Certainly, the output torque that torque adjustment mechanism is used for regulating the first motor 6 and the second motor 7 also can be set in the gear box casing 9a.Transmission mechanism 9 also can adopt non-geared drive, such as modes such as belt wheel transmissions.
Between the first motor 6 and the second motor 7 shaft coupling is set, the shaft coupling in the present embodiment adopts torsion spring 8.The moment of torsion output of the second motor 7 is passed to the first motor 6 by shaft coupling, and the total output of the moment of torsion of final the first motor 6 and the second motor 7 is passed to and workpiece 3 by transmission mechanism 9.The specific works parameter of screwdriver 10 can be arranged to as shown in the following chart:
| Gear ratio | Nominal torque (Nm) | Rated speed (rpm) |
| 79 | 0.7 | 150 |
| 34 | 0.3 | 350 |
| 24 | 0.2 | 500 |
Because electrician's screwdriver requires exchanging charged work under 120V or the 230V voltage, want ability 1500V high pressure so require screwdriver 10, consider operator's safety, the operator host shell 1 that can touch and the handle portion 2 that grips usefulness are paid the utmost attention to the employing insulating materials make, such as insulating materials such as rubber, plastics.Workpiece 3 is extended with certain length at longitudinally, therefore at its outer surface that protrudes from the part of host shell 1 insulating barrier 3b is set, for example can be at workpiece 3 peripheral surfaces sheathed garment bag or other insulating materials.The first motor 6 and the second motor 7 in the present embodiment are double insulation motor, namely are provided with insulating materials on the motor drive shaft, and its effect is that forceful electric power and rear handle section 2 and human body are separated, and guarantee the safety of operation.Double insulation motor is different from common d.c. motor, and the conventional DC motor only arranges basic insulation.Transmission mechanism 9 adopts the all-plastic planetary gear, and gear box casing 9a adopts plastic casing, and such setting can not only be protected operator's safety, and is conducive to reduce the complete machine weight of screwdriver 10, reduces cost.
With reference to Fig. 3, shown in Figure 4, the first motor 6 is provided with the first motor drive shaft 6a in the side near the second motor 7, and the second motor 7 arranges the second motor drive shaft 7a in the side near the first motor 6, is provided with the gap between the first motor drive shaft 6a and the second motor drive shaft 7a.The centre of the first motor drive shaft 6a and the second motor drive shaft 7a offers respectively notch 6b, 7b, notch 6b, 7b extends certain length along vertical link by motor drive shaft of the first motor drive shaft 6a and the second motor drive shaft 7a to free end respectively, be arranged among the notch 6b torsion spring end 8 after the 8 ' bending of torsion spring head end " bend to block afterwards and establish among the notch 7b.Torsion spring 8 so is arranged between the first motor drive shaft 6a and the second motor drive shaft 7a, so that the first motor 6 can not only keep coaxial and can keep identical phase place during with the rotation of the second motor 7.Simultaneously torsion spring 8 can be controlled or suppress to result from impact between the first motor 6 and the second motor 7, can eliminate some and may reside in off-centre between the first motor 6 and the second motor 7.Certainly the torsion spring 8 in the present embodiment also can be replaced with flexible axle or other flexible connecting member.
With reference to Fig. 5, Fig. 6, shown in Figure 7, the epicyclic train of transmission mechanism 9 comprises output planet carrier 40.Screwdriver 10 is provided with self-locking device 18, self-locking device 18 comprises a fixed disk 31, periphery at fixed disk 31 evenly is provided with several fixedly pins 32, these fixedly pin 32 closely connect as one with gear box casing 9a, make fixed disk 32 be inactive state with respect to host shell 1 and gear box casing 9a, then be formed with inner headed face 33 in the inside circumference of fixed disk 31.In the scope of inner headed face 33, be provided with a transfer panel 34, the core of transfer panel 34 arranges flat square hole 35.Main shaft 23 1 ends connect workpiece 3, are arranged to plat part 24 on the other end, and transfer panel 34 connects as one by flat square hole 35 and plat part 24 with main shaft 23, thereby can rotate together with main shaft 23.The connected mode that wherein adopts can be other connected mode replacement that those skilled in that art habitually practise spline and easily expect.Self-locking device 18 also comprises a plurality of legs 41 of giving prominence to workpiece 3 directions from output planet carrier 40, and leg 41 is fixedly installed on the output planet carrier 40.
The periphery of transfer panel 34 is formed with a plurality of planes 36, and the end near output planet carrier 10 on the transfer panel 34 is provided with connecting portion, and this connecting portion adopts spline tooth 38, and transfer panel 34 is by spline tooth 38 and 10 loose fits of output planet carrier.Between fixed disk 31 and the transfer panel 34, the position is to be respectively equipped with roller 37 between the plane 36 of the inner headed face 33 of fixed disk 31 and transfer panel 34 more specifically, and roller 37 is against inner headed face 33 and plane 36, and can roll in the present position.In addition, be inserted with the leg 41 of output planet carrier 40 between each roller 37, that is to say, leg 41 is arranged between the outside disc of the inner headed face 33 of fixed disk 31 and transfer panel 34.Leg 41 is matched in clearance with inner headed face 33 and the transfer panel 34 of fixed disk 31, so leg 41 can rotate in the present position.
With further reference to Fig. 8, when triggering control piece 12, rotation output take motor is counterclockwise as example, the rotation torque that the first motor 6 and the second motor 7 produce is delivered on the output planet carrier 40, output planet carrier 10 transfer panels 34 relative and that its spline connects turn over certain angle, the rotation that this moment, output planet carrier leg 41 produced on the respective direction with output planet carrier 40.Wherein, after leg 41 rotates one section micro-displacement, be resisted against on the roller 37, because roller 37 is that small end from the face of carving that is formed between these two by the plane 36 of inner headed face 33, transfer panel 34 is to large end motion, so roller 37 can be output end planet carrier leg 41 and promote, follow output planet carrier 40 and rotate, until spline tooth 38 contacts side surfaces of output planet carrier 40 and transfer panel 34, this moment, output planet carrier leg 41 drove transfer panels 34 rotations with roller 37.Like this, the first motor 6 will be delivered on the main shaft 23 that is fixedly connected with transfer panel 34 with the rotation torque of the second motor 7, and further be delivered to workpiece 3.
With further reference to Fig. 9, when control piece 12 disconnections, the first motor 6 and the second motor 7 stop the rotation and without spin moment of torsion output.If the operator still turns the working head that is contained in the workpiece component 3 along clockwise direction, what show will be the rotation that main shaft 23 can produce respective direction.Because main shaft 23 connects as one by flat side with transfer panel 34, transfer panel 34 also will be with the rotation on the main shaft 23 generation respective direction.And roller 37 is rolled into the second place shown in the solid line by the primary importance shown in the dotted line, because roller 37 is that large end from the face of carving that is formed between these two by the plane 36 of inner headed face 33, transfer panel 34 is to little end motion, this moment fixed disk 31 planes 36, inner headed face 33, with plane 36 threes of transfer panel 34 between mutually carve tightly, main shaft 23 can not drive 41 rotations of output planet carrier support, and namely main shaft 23 automatically locks.Because the setting of self-locking structure 18, so that the operator can select manual rotation screw 10 to twist screw.Be particularly useful for working as screwdriver under electric model, screw is screwed onto in the situation about substantially putting in place, can make motor 6 by control piece 12,7 stop, under the manual mode, rotate this screwdriver 10 screw is screwed to the position, thereby avoided screw to descend to twist and cause the sliding tooth of screw at electric model.This screwdriver 10 is not only a electrician's screwdriver, or the screwdriver of a hand, electric integral, and is easy to operate and be easy to carry.
Except electrician's screwdriver, the technical scheme of the present invention's protection also is applicable to other portable hand-held tool, and such as hand electric oscillating machine, hand electric sander, the little scissors of hand electric etc. all belongs to category of the present invention.
With reference to Figure 10, shown in Figure 11, the charging device 50 that electrically connects with screwdriver 10 comprises pedestal 51, be positioned at the supporting walls 52 of pedestal 51 tops, the wire 54 that wherein is provided with the charging inlet (not shown) in the pedestal 51 and is connected with AC power, supporting walls 52 are arranged to a semienclosed hollow cylinder.Certainly, also can be arranged to convenient other shape that screwdriver 10 plugs that receives.Because the slim fuselages setting of screwdriver 10, so that when needs charge, as long as screwdriver 10 handle portion 3 are inserted among the resettlement section 52a of supporting walls 52, this moment, pedestal 51 interior charging inlet and screwdriver charging inlets 19 (with reference to Fig. 2) were set up electric connection automatically, and charging device 50 just can charge to the battery unit 5 of screwdriver 10.Pedestal 51 is provided with two indicator lamps 53 and can be respectively applied to indicate charging device 50 to set up with being electrically connected of screwdriver 10, and battery is full of.Color when wherein indicator lamp lights represents with redness or green, can certainly use other color.For example also can battery be full of indicator lamp and be set to that lamp lights when charging, be full of the back light automatic distinguishing.Or charging the time is red light, is full of rear demonstration green light.Screwdriver 10 and charging device 50 such being equipped with, so that screwdriver 10 is after using end, it uprightly is inserted in the resettlement section 52a of charging device 50, not only can be screwdriver 10 chargings timely, while also provides a receiving space for the collection of screwdriver 10, the operator does not need extra tool box that it is collected, and just can take out conveniently in use, and is very convenient.
Claims (10)
1. portable hand-held tool, comprise: host shell, be arranged at the workpiece of host machine casing one end, be provided with in the described host shell for the motor that drives the working position, and the battery unit that energy is provided for motor, it is characterized in that: the longitudinal size of described portable hand-held tool and the ratio of lateral dimension arrange scope between 4.4 to 12.5.
2. portable hand-held tool according to claim 1, it is characterized in that: the longitudinal size of described portable hand-held tool and the ratio of lateral dimension arrange scope between 7 to 8.
3. portable hand-held tool according to claim 1, it is characterized in that: the longitudinal size of described portable hand-held tool arranges scope between 200mm to 350mm.
4. portable hand-held tool according to claim 1, it is characterized in that: the lateral dimension of described portable hand-held tool arranges scope between 28mm to 45mm.
5. portable hand-held tool according to claim 1 is characterized in that: described host shell has the host shell axis that lengthwise extends, the motor axis of described electro-motor and host shell dead in line or parallel.
6. portable hand-held tool according to claim 1, it is characterized in that: described motor comprises at least two electro-motors, described electro-motor is serially connected with in the host shell.
7. portable hand-held tool according to claim 6, it is characterized in that: described electro-motor comprises two motors that characteristic is identical, and the diameter of described electro-motor is identical.
8. portable hand-held tool according to claim 6, it is characterized in that: the profile of described electro-motor is elongated cylindrical, the L/D ratio value of described electro-motor arranges scope between 1.2 to 2.6, and the diameter of described electro-motor is less than 38.5mm.
9. portable hand-held tool according to claim 1, it is characterized in that: described workpiece is connected with main shaft, is provided with the self-locking device for the locking main shaft between described main shaft and the motor.
10. portable hand-held tool according to claim 1, it is characterized in that: described host shell is provided with the control piece of the described motor of control, when control piece control motor operations, described portable hand-held tool is in electric model, when control piece control motor was not worked, described portable hand-held tool was in manual mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102759179A CN102990589A (en) | 2011-09-16 | 2011-09-16 | Portable handheld tool |
| PCT/CN2012/081494 WO2013037325A1 (en) | 2011-09-16 | 2012-09-17 | Electrician's screwdriver and portable hand-held tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102759179A CN102990589A (en) | 2011-09-16 | 2011-09-16 | Portable handheld tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102990589A true CN102990589A (en) | 2013-03-27 |
Family
ID=47919977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102759179A Pending CN102990589A (en) | 2011-09-16 | 2011-09-16 | Portable handheld tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102990589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437126A (en) * | 2015-12-23 | 2016-03-30 | 天津职业技术师范大学 | Acceleration screwdriver |
| CN107351008A (en) * | 2017-09-01 | 2017-11-17 | 苏州甘泰精密机械有限公司 | A kind of band lighting multifunctional electric tool |
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| CN2040838U (en) * | 1988-01-21 | 1989-07-12 | 第二汽车制造厂 | Hydaulic spanner with function of measurement of screw pair |
| JPH10329051A (en) * | 1997-05-23 | 1998-12-15 | Yaskawa Electric Corp | Screw tightening machine and control method therefor |
| CN1513641A (en) * | 2002-12-17 | 2004-07-21 | �������ʱ����칫˾ | Electric clanping apparatus |
| US7311027B1 (en) * | 2006-12-15 | 2007-12-25 | Uryu Seisaku Ltd. | Electric screwdriver |
| CN201067877Y (en) * | 2007-01-30 | 2008-06-04 | 孙福超 | Power-assisted screwdriver |
| CN201162817Y (en) * | 2008-03-18 | 2008-12-10 | 宁波新港工具有限公司 | Charging type electric drill and gearbox of screw driver |
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2011
- 2011-09-16 CN CN2011102759179A patent/CN102990589A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040838U (en) * | 1988-01-21 | 1989-07-12 | 第二汽车制造厂 | Hydaulic spanner with function of measurement of screw pair |
| JPH10329051A (en) * | 1997-05-23 | 1998-12-15 | Yaskawa Electric Corp | Screw tightening machine and control method therefor |
| CN1513641A (en) * | 2002-12-17 | 2004-07-21 | �������ʱ����칫˾ | Electric clanping apparatus |
| US7311027B1 (en) * | 2006-12-15 | 2007-12-25 | Uryu Seisaku Ltd. | Electric screwdriver |
| CN201067877Y (en) * | 2007-01-30 | 2008-06-04 | 孙福超 | Power-assisted screwdriver |
| CN201162817Y (en) * | 2008-03-18 | 2008-12-10 | 宁波新港工具有限公司 | Charging type electric drill and gearbox of screw driver |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437126A (en) * | 2015-12-23 | 2016-03-30 | 天津职业技术师范大学 | Acceleration screwdriver |
| CN107351008A (en) * | 2017-09-01 | 2017-11-17 | 苏州甘泰精密机械有限公司 | A kind of band lighting multifunctional electric tool |
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Application publication date: 20130327 |