CN207746964U - Electric precise screwdriver - Google Patents
Electric precise screwdriver Download PDFInfo
- Publication number
- CN207746964U CN207746964U CN201721626826.4U CN201721626826U CN207746964U CN 207746964 U CN207746964 U CN 207746964U CN 201721626826 U CN201721626826 U CN 201721626826U CN 207746964 U CN207746964 U CN 207746964U
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- China
- Prior art keywords
- shell
- bearing block
- screwdriver
- output shaft
- roller
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- 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.)
- Withdrawn - After Issue
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- 239000002131 composite material Substances 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model provides a kind of electric precise screwdriver, including screwdriver bit and shell, motor is equipped in the shell, the screwdriver bit is located at the front of the shell, it is equipped with for realizing manual and automatic pattern switching composite structure between the screwdriver bit and motor, the proximal end of the output shaft of the composite structure is the step that diameter is more than its distal end, and the peripheral surface of the step is formed by one group of curved surface, and one group of curved surface is formed by connecting by spaced arcuate surface and inner concave.In automatic mode, torque increases the electric precise screwdriver of the utility model；In a manual mode, output shaft not will produce the idle stroke of rotation, and user experience is good.
Description
Technical field
The utility model is related to a kind of screwdriver, more particularly to one kind are manual for tightening and unscrewing screw, nut and collection
With automatically in one screwdriver.
Background technology
Screwdriver is a kind of tool for twisting screw to force its in place, and usual screwdriver is divided into normal screws
Batch, combined screwdriver and electric screwdriver, and electric screwdriver is typically all combined screwdriver.Electric screwdriver cares for name
It is exactly to replace human hand to install and remove screw with electro-motor, and the small electric screwdriver of routine is in the case of no electric to think justice,
It can not generally be used manually, manually in use, screwdriver output shaft is non-locking in activity.
In the prior art, it is directed to a kind of screwdriver of auto-manual, is limited using check valve, realizes auto-manual
, the volume of check valve is big, and outer diameter is also larger so that the volume and outer diameter of screwdriver product are also larger, it has not been convenient to carry and deposit
Storage.Chinese patent CN 201410339537.0 improves the technology of auto-manual, uses a kind of composite structure, the compounding machine
Structure includes mutually matched output shaft, supporting rack, bearing block and a plurality of pins.But each part is relatively special-shaped in the structure,
Production cost is larger, especially the output shaft of three-stage, also causes the entire length of screwdriver longer；But also there are one compared with
The torque of big problem, the composite structure is smaller；In addition, the structure is in switching manual mode, the rotation of output shaft have compared with
Long one section of idle stroke, user experience are bad.
Utility model content
Utility model aims to solve above-mentioned technical problem, a kind of using effect more preferably electric precise spiral shell is provided
Silk batch.
The utility model is achieved through the following technical solutions：
A kind of electric precise screwdriver, including screwdriver bit and shell, the shell is interior to be equipped with motor, the screwdriver bit
Positioned at the front of the shell, it is equipped with for realizing manual and automatic pattern switching compound between the screwdriver bit and motor
Mechanism, the composite structure include：
Bearing block, including a staged inner cavity, and fix on the housing,
Output shaft interts set on the inner cavity of the bearing block and its distal end is from the stretching of the distal end of the bearing block, described defeated
The distal end of shaft has the interior hexagonal for receiving the screwdriver bit, and the proximal end of the output shaft is that diameter is more than its distal end
The staged inner cavity of step, the step and the bearing block matches, and the peripheral surface of the step is formed by one group of curved surface, institute
One group of curved surface is stated to be formed by connecting by spaced arcuate surface and inner concave,
And it is placed in the holder between the bearing block and output shaft and a plurality of rollers, the support assorted roller driving
The output shaft realizes that the automatic mode of the electric precise screwdriver, the roller are mutually solid by the output shaft and bearing block
Surely the manual mode of the electric precise screwdriver is realized.
Preferably, the holder includes backboard and vertically extending a plurality of adjutages, the backboard be equipped with it is described
The arbor of the linkage axis hole that the arbor of motor is connected to each other, the holder and motor is connected, and the adjutage of the holder stretches into institute
It states between the proximal end of output shaft and bearing block, the internal diameter of the adjutage is suitable with the outer diameter of the arcuate surface, the roller axle
To between the staged inner cavity of the backboard and bearing block that are set to the holder, it is circumferentially disposed in the inner concave and bearing block it
Between, and between adjacent adjutage, the diameter of the roller be more than the distance between the arcuate surface and bearing block and with institute
The maximum distance stated between inner concave and bearing block is suitable.
Preferably, under automatic mode, the roller generates the output shaft skew force of rotation direction.
Preferably, the diameter of the roller is equal to the maximum distance between the inner concave and bearing block.
Preferably, the shell is the having of being formed of being fixed together by snap device by first shell and second shell
The cylinder-like structure of receiving space.
Preferably, the bearing block is fixed on by convex shoulder on the shell.
Preferably, pad is additionally provided between the bearing block and the shell, the pad is sleeved on the motor
Motor shaft outside.
Preferably, battery and the circuit board equipped with switch are additionally provided in the shell, the shell is equipped with for controlling
The switch key of the switch, and the Anti-slip cover that is set in outside the shell.
Preferably, the both ends of the shell are respectively arranged with preceding lock sleeve and rear lock sleeve.
Preferably, the rear locking is set between tail-hood and shell, and the tail-hood is threadedly coupled with shell, before described
LED light pipe and lampshade are equipped in lock sleeve.
The beneficial effects of the utility model are mainly reflected in：
1, under automatic mode, the roller of the utility model generates output shaft the oblique thrust of its rotation direction, makes this reality
Increased with novel electric precise screwdriver torque；
2, under manual mode, the output shaft of the utility model not will produce the idle stroke of rotation, and user experience is good；
3, the polymorphic structure for eliminating output shaft keeps manufacture more convenient, also makes the electric precise screwdriver of the utility model
Entire length can shorten, reduce cost；
4, the setting of pad can reduce the frictional force between holder and shell, improve drive efficiency, reduce energy consumption.
Description of the drawings
Fig. 1 is the exploded perspective view of the preferred embodiment in the utility model；
Fig. 2 is the front view of the preferred embodiment in the utility model；
Fig. 3 is the enlarged drawing of part A in Fig. 2；
Fig. 4 is the enlarged drawing of part B in Fig. 1；
Fig. 5 is the sectional view along C-C in Fig. 2；
Fig. 6 is the force figure of the roller of the preferred embodiment in the utility model in automatic mode；
Fig. 7 is the force figure of the roller of the prior art in automatic mode.
Specific implementation mode
It is understandable to enable the above-mentioned purpose, feature and advantageous effect of the utility model to become apparent, below in conjunction with the accompanying drawings
Specific embodiment of the utility model is described in detail.
The utility model discloses a kind of electric precise screwdriver, as shown in Figures 1 to 5, including screwdriver bit and shell
1, the shell 1 be fixed together by snap device 103 by first shell 101 and second shell 102 formed have receive
Hold the cylinder-like structure in space, it is simple and convenient, and reliability higher.Certainly, further ultrasonic bonding is also possible.
It is equipped with motor 2, battery 7 and the circuit board 8 equipped with switch in the receiving space of the shell 1, is set on the shell
It is useful for controlling the switch key 9 of the switch, circuit board 8 is started by the switch key 9 and driving motor 7 rotates forward or anti-
Turn.It is selectively arranged with Anti-slip cover 10 as needed outside the shell, to meet ergonomic designs.
The screwdriver bit is located at the front of the shell 1, is equipped with for realizing hand between the screwdriver bit and motor 2
Dynamic and automatic pattern switching composite structure, the composite structure include：
Bearing block 3, including staged inner cavity are fixed on by convex shoulder 31 on the shell 1 in conjunction with shown in Fig. 3；
Output shaft 4, interts the inner cavity for being set to the bearing block 3 and its distal end 41 is stretched out from the distal end of the bearing block 3, institute
The distal end 41 of output shaft 4 is stated with the interior hexagonal for receiving the screwdriver bit, the proximal end 42 of the output shaft 4 is that diameter is big
The staged inner cavity of step in its distal end 41, the step and the bearing block 3 matches and prevents the output shaft 4 from shell
It is axially dropped out in 1；
And it is placed in holder 5 and a plurality of rollers 50 between the bearing block 3 and output shaft 4.
It is equipped with specifically, the holder 5 includes backboard 52 and vertically extending a plurality of adjutages 51, the backboard 52
The linkage axis hole being connected to each other with the arbor of the motor 2, the arbor of the motor 2 can drive after being arranged in the linkage axis hole
The holder 5 rotates together.
Similarly to the prior art, the holder 5 coordinates roller 50 to drive for the switching of the automatically and manually pattern of the utility model
Move the automatic mode that the output shaft 4 realizes the electric precise screwdriver, the roller 50 is by the output shaft 4 and bearing block
3, which are fixed to each other, realizes the manual mode of the electric precise screwdriver.
The characteristics of the utility model, is：The peripheral surface of the step of the output shaft 4 is formed by one group of curved surface, described one group
Curved surface is formed by connecting by spaced arcuate surface 43 and inner concave 44.The adjutage 51 of the holder stretches into the output shaft
Between proximal end 42 and bearing block 3, the internal diameter of the adjutage 51 is suitable with the outer diameter of the arcuate surface 43, and the roller 50 is axial
It is set between the backboard 52 of the holder and the staged inner cavity of bearing block 3, it is circumferentially disposed in the inner concave 44 and bearing
Between seat 3, and between adjacent adjutage 51, the diameter of the roller 50 is more than between the arcuate surface 43 and bearing block 3
Distance and maximum distance between the inner concave 44 and bearing block 3 it is suitable.
In conjunction with shown in Fig. 6 and Fig. 7, in automatic mode, the roller 50 generates the output shaft 4 to be turned the utility model
The skew force D1 in dynamic direction.In automatic mode, the roller 50 generates vertical centripetal force to the prior art to the output shaft 4
D2.In this way, driving force F under the same conditions, driving force D1=N*Cos b1+F*Sin of the internal concave surface of the utility model 44
C1, driving force D2=N*Cos a1, wherein F of the prior art to output shaft:Under automatic mode motor to the driving force of roller,
N：Reaction force, D1 of the bearing block to roller：Reaction force, D2 of the output shaft inner concave to roller：Prior art output shaft is flat
Reaction force, a1 in face of roller:Angle, b of the bearing block to roller reaction force and axle center：Output shaft arc surface is to roller
Reaction force and axle center angle（It is visible in figure）、b1：Bearing block to roller reaction force D1 forced directions component
Angle, c1：The angle of motor driving force and vertical direction, L1/L2：Roller is respectively to the arm of force of output shaft active force.In conjunction with attached
Figure is as can be seen that driving force:D1>D2 drives the arm of force：L1>L2, driving moment of the utility model to output shaft：M1=D1*L1,
Driving moment of the prior art to output shaft：M2=D2*L2 can be obtained from above, and M1 ＞ M2 make the electric precise spiral shell of the utility model
Silk batch torque increases, and drive efficiency is more than the electric screwdriver of the prior art.
Preferably, the diameter of the roller 50 can select to be substantially equal between the inner concave 44 and bearing block 3 most
Big distance.In this way under the manual mode of the utility model, output shaft not will produce the idle stroke of rotation, and user experience is good.
The switching of the manually and automatically pattern of the utility model is briefly described：
Automatic mode operating principle first, by control the positive and negative rotation of 9 regulation motor 2 of switch key selecting to tighten or
Screw, control 9 driving motor 2 of switch key work are removed, the axis of motor drives holder 5 to rotate, and the adjutage 51 of supporting rack 5 drives
Dynamic roller 50, roller 50 fastens the inner concave 44 of output shaft and output shaft 4 is driven to rotate, specifically, adjutage 51 is to roller 50
The active force in Fig. 6 is generated, which acts on output shaft 4 by roller 50 again, and output shaft 4 finally drives screwdriver bit rotation
Rotate into row work.
Followed by hand operating principle, when motor does not work or under accurate operation requirement operating mode, directly carries out manually
Tighten or remove screw, when screwdriver bit rotary screw, screwdriver bit generates reaction force to output shaft 4, due to the roller
50 diameter is substantially equal to the maximum distance between the inner concave 44 and bearing block 3, so when output shaft 4 rotates, to roller
50 reaction forces generated are transferred to bearing block 3, and output shaft 4, roller 50 and bearing block 3 are mutually fastened and be relatively fixed at this time, by
With shell 1 it is fixed in bearing block 3, so output shaft 4, roller 50, bearing block 3, shell 1 and screwdriver bit are relatively fixed,
Screwdriver is consistent with normal screws batch application method at this time, and the null of output shaft 4 will not even be generated due to substantially reducing
Journey, user experience are good.
As shown in figures 1 and 3, pad 6, the pad 6 are additionally provided between the bearing block 3 and the shell 1
It is sleeved on outside the motor shaft of the motor 2, the frictional force between holder and shell can be reduced in this way, improve drive efficiency, reduce energy
Consumption.The output shaft 4 of two-part, manufacture is more convenient, and the entire length of the electric precise screwdriver of the utility model is also allow to contract
It is short, cost is reduced, the bindiny mechanism between bearing block 3 need not be in addition designed.
In the utility model, the both ends of the shell 1 are respectively arranged with preceding lock sleeve 11 and rear lock sleeve 12.Lock after described
Fixed 12 are arranged between tail-hood 13 and shell 1, and the tail-hood 13 is threadedly coupled with shell 1, is equipped in the preceding lock sleeve 11
LED light pipe 14 and lampshade 15.Such front and back retaining mechanism makes the global reliability higher of the utility model.Certainly, this practicality
Battery in novel can be dry cell or rechargeable battery, include a charging electricity when using rechargeable battery, in shell 1
Road, at this time tail-hood 13 can also directly with shell 1 welding with one.
Although the utility model is disclosed as above with preferred embodiment, so it is not limited to the utility model, any
Those skilled in the art, without departing from the spirit and scope of the utility model, when can make a little modification and it is perfect, therefore this
The protection domain of utility model, which is worked as, is subject to what claims were defined.
Claims (8)
1. a kind of electric precise screwdriver, including screwdriver bit and shell（1）, the shell（1）It is interior to be equipped with motor（2）, described
Screwdriver bit is located at the shell（1）Front, the screwdriver bit and motor（2）Between be equipped with for realizing manual and automatic
The composite structure of pattern switching, it is characterised in that：The composite structure includes
Bearing block（3）, including a staged inner cavity, and it is fixed on the shell（1）On,
Output shaft（4）, intert and be set to the bearing block（3）Inner cavity and its distal end（41）From the bearing block（3）Distal end stretch
Go out, the output shaft（4）Distal end（41）With the interior hexagonal for receiving the screwdriver bit, the output shaft（4）It is close
End（42）It is more than its distal end for diameter（41）Step, the step and the bearing block（3）Staged inner cavity match, institute
The peripheral surface for stating step is formed by one group of curved surface, and one group of curved surface is by spaced arcuate surface（43）And inner concave（44）Even
It connects,
And it is placed in the bearing block（3）And output shaft（4）Between holder（5）With a plurality of rollers（50）,
The holder（5）Coordinate roller（50）Drive the output shaft（4）Realize the automatic mode of the electric precise screwdriver,
The roller（50）By the output shaft（4）With bearing block（3）It is fixed to each other and realizes the manual mould of the electric precise screwdriver
Formula；
Under automatic mode, the roller（50）To the output shaft（4）Generate the skew force of rotation direction；
The roller（50）Diameter be equal to the inner concave（44）With bearing block（3）Between maximum distance.
2. electric precise screwdriver as described in claim 1, which is characterized in that the holder（5）Including backboard（52）With hang down
The a plurality of adjutages directly extended（51）, the backboard（52）It is equipped with and the motor（2）The universal driving shaft that is connected to each other of arbor
Hole, the holder（5）It is connected with the arbor of motor, the adjutage of the holder（51）Stretch into the proximal end of the output shaft（42）
With bearing block（3）Between, the adjutage（51）Internal diameter and the arcuate surface（43）Outer diameter it is suitable, the roller（50）Axis
To the backboard for being set to the holder（52）With bearing block（3）Staged inner cavity between, it is circumferentially disposed in the inner concave
（44）With bearing block（3）Between, and it is located at adjacent adjutage（51）Between, the roller（50）Diameter be more than the arcuate surface
（43）With bearing block（3）The distance between and with the inner concave（44）With bearing block（3）Between maximum distance it is suitable.
3. electric precise screwdriver as claimed in claim 1 or 2, which is characterized in that the shell（1）For by first shell
（101）And second shell（102）Pass through snap device（103）Be fixed together the cylindric knot with receiving space to be formed
Structure.
4. electric precise screwdriver as claimed in claim 1 or 2, which is characterized in that the bearing block（3）Pass through convex shoulder（31）
It is fixed on the shell（1）On.
5. electric precise screwdriver as claimed in claim 1 or 2, which is characterized in that the bearing block（3）With the shell
（1）Between be additionally provided with pad（6）, the pad（6）It is sleeved on the motor（2）Motor shaft outside.
6. electric precise screwdriver as claimed in claim 1 or 2, which is characterized in that be additionally provided with battery in the shell（7）With
Circuit board equipped with switch（8）, the shell is equipped with the switch key for controlling the switch（9）, and it is set in institute
State the Anti-slip cover outside shell（10）.
7. electric precise screwdriver as described in claim 1 or 2 is any, which is characterized in that the shell（1）Both ends difference
It is provided with preceding lock sleeve（11）With rear lock sleeve（12）.
8. electric precise screwdriver as claimed in claim 7, which is characterized in that lock sleeve after described（12）It is arranged in tail-hood
（13）With shell（1）Between, the tail-hood（13）With shell（1）It is threadedly coupled, the preceding lock sleeve（11）It is interior to be equipped with LED light pipe
（14）And lampshade（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721626826.4U CN207746964U (en) | 2017-11-29 | 2017-11-29 | Electric precise screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721626826.4U CN207746964U (en) | 2017-11-29 | 2017-11-29 | Electric precise screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207746964U true CN207746964U (en) | 2018-08-21 |
Family
ID=63148526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721626826.4U Withdrawn - After Issue CN207746964U (en) | 2017-11-29 | 2017-11-29 | Electric precise screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207746964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107791188A (en) * | 2017-11-29 | 2018-03-13 | 苏州多维思智能科技有限公司 | Electric precise screwdriver |
-
2017
- 2017-11-29 CN CN201721626826.4U patent/CN207746964U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107791188A (en) * | 2017-11-29 | 2018-03-13 | 苏州多维思智能科技有限公司 | Electric precise screwdriver |
| CN107791188B (en) * | 2017-11-29 | 2024-08-02 | 源石智造科技(苏州)有限公司 | Precision electric screw driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180821 Effective date of abandoning: 20240802 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180821 Effective date of abandoning: 20240802 |