CN208885883U - A kind of composite driving mechanism for small-sized electric screwdriver - Google Patents
A kind of composite driving mechanism for small-sized electric screwdriver Download PDFInfo
- Publication number
- CN208885883U CN208885883U CN201821142871.7U CN201821142871U CN208885883U CN 208885883 U CN208885883 U CN 208885883U CN 201821142871 U CN201821142871 U CN 201821142871U CN 208885883 U CN208885883 U CN 208885883U
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- China
- Prior art keywords
- gear
- gear ring
- planetary gear
- electric screwdriver
- driving mechanism
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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.)
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Abstract
The utility model discloses a kind of composite driving mechanisms for small-sized electric screwdriver, comprising: the motor gear driven by motor, the planetary gear engaged with motor gear, the pinion frame with planetary gear cooperation, the composite driving mechanism further includes relatively-stationary first gear ring and the second gear ring as power output, first gear ring and the second gear ring is superimposed along planetary gear axial direction and places, and the first gear ring is engaged with planetary gear lower end and upper end respectively with the internal tooth in the second gear ring.The utility model has the following beneficial effects: the axial length for shortening entire transmission mechanism compared with prior art, so as to enable the overall dimensions of electric screwdriver more compact, convenient for being suitable for the operating environment of various narrow spaces.Secondly, the utility model reduces the components of product, convenient for assembling, the cost of product can effectively reduce.
Description
Technical field:
The utility model relates to power tools technology fields, refer in particular to a kind of Composite Transmission machine for small-sized electric screwdriver
Structure.
Background technique:
Screwdriver (also referred to as screwdriver, screwdriver) is a kind of tool for twisting screw, bolt, drives spiral shell by screwdriver
Perhaps bolt rotates and it is enabled to fasten or loosen silk.So-called electric screwdriver is exactly to be led to using the screwdriver of motor driving
Motor drive transmission device is crossed, the rotation of screwdriver cutter head is driven, to reduce manual operation, production efficiency is improved, it is strong to reduce labour
Degree.
The internal transmission mechanism of its in existing electric screwdriver mostly uses greatly planetary gear transmission mechanism, generally passes through three
The output of motor is carried out deceleration and torque increase by pole planetary gear transmission mechanism, so that screwdriver output shaft be enabled to generate enough torsions
Power comes rotation screw or bolt.
Current electric screwdriver has the disadvantage that the revolving speed of the output shaft of motor is usually very high, and torque is lower,
Deceleration torque increase cannot be just completed by primary speed-down mechanism, generally use more step reduction mechanism, and currently used is using three
The planetary gear set of grade superposition, to gradually carry out deceleration and torque increase.So, although the revolving speed and torque of output reach
It is required that but the volume of entire transmission mechanism just will increase, especially for axial space, this design will lead to electric screw
The length criticized is longer, when installing or removing some screws in narrow space, since electric screwdriver volume is big, and working space
Not enough, cause not being available electric screwdriver at all, it can only handwork.
In addition, using the transmission mechanism of three-stage planetary gear at present, part is more, assembles also more troublesome.Meanwhile by
It is complicated in planetary gear structure and working condition, it is easy to produce situations such as gear fatigue equivalent, tooth root fracture occur for noise.
So how to simplify the transmission mechanism of current electric screwdriver, reduce the length of product, be those skilled in the art for a long time with
Carry out to be solved technical problem.
Utility model content:
Technical problem to be solved in the utility model, which is that, overcomes the deficiencies of the prior art and provide one kind for small-sized
The composite driving mechanism of electric screwdriver, the composite driving mechanism have structure simple, and axial length is shorter, and still can reach
The advantages that compared with large transmission ratio.
In order to solve the above-mentioned technical problem, the utility model uses following technical proposals: one kind being used for small-sized electric spiral shell
The composite driving mechanism of silk batch, comprising: the motor gear driven by motor, the planetary gear and row that are engaged with motor gear
The pinion frame of star gear cooperation, the composite driving mechanism further include relatively-stationary first gear ring and as power output
Second gear ring, first gear ring and the second gear ring along planetary gear axial direction be superimposed place, and the first gear ring with
Internal tooth in second gear ring is engaged with planetary gear lower end and upper end respectively.
Furthermore, in above-mentioned technical proposal, second gear ring includes integrally formed annular solid and end face,
Described in the inner wall of annular solid form the internal tooth engaged with planetary gear.
Furthermore, in above-mentioned technical proposal, the planetary gear carrier is located at the second gear ring inner, the planet tooth
Wheel carrier is downwardly extending the planetary gear shaft with planetary gear cooperation, which, which upwardly extends, is formed with and second
The locating shaft of the end face cooperation of gear ring.
Furthermore, in above-mentioned technical proposal, the axis hole passed through for locating shaft is offered on the end face.
Furthermore, in above-mentioned technical proposal, it is formed with a protrusion on the end face, is arranged on the protrusion
There is bearing.
After adopting the above technical scheme, the utility model have the following beneficial effects: compared with prior art it is practical
One group of planetary gear, input terminal of this group of planetary gear as power, while the planetary gear set are only provided in novel will
Rotation and revolution simultaneously, and all torsion will be transmitted to the second gear ring, the second gear ring conduct simultaneously while rotation and revolution
The output end of entire transmission mechanism.Great advantage in this way is exactly the axial length for shortening entire transmission mechanism,
So as to enable the overall dimensions of electric screwdriver more compact, convenient for being suitable for the operating environment of various narrow spaces.Secondly,
The utility model is relative to existing similar product, which reduce the components of product, convenient for assembling, can effectively reduce product at
This.Need three-stage planetary gear group real finally, the utility model while reducing components, still reaches in traditional product
Existing transmission ratio, to guarantee that the output revolving speed of electric screwdriver and torque reach requirement.
Detailed description of the invention:
Fig. 1 is the utility model axial section structural schematic diagram；
Fig. 2 is sectional view along A-A in Fig. 1.
Specific embodiment:
The present invention will be further described with attached drawing combined with specific embodiments below.
As shown in Fig. 1, Fig. 2, the utility model is a kind of composite driving mechanism for small-sized electric screwdriver, comprising:
Motor gear 1, planetary gear 2, pinion frame 3, the first gear ring 5 and the second gear ring 6.
First gear ring 5 and the second gear ring 6 is superimposed along the axial direction of planetary gear 2 and places, and the first gear ring 5
It is engaged respectively with the lower end of planetary gear 2 and upper end with the internal tooth in the second gear ring 6.I.e. in the utility model, planet tooth
The axial length of wheel 2 is longer, can engage with the first gear ring 5 and the second gear ring 6 to descend both ends thereon simultaneously.The utility model
In, for using three planetary gears 2, these three planetary gears 2 are uniformly distributed connection by respective planetary gear shaft 21
On pinion frame 3.
The pinion frame 3 is located inside the second gear ring 6, which has been downwardly extending and planet
The planetary gear shaft 31 that gear 2 cooperates, which, which upwardly extends, is formed with and the cooperation of the end face 62 of the second gear ring 6
Locating shaft 32.
Second gear ring 6 includes integrally formed annular solid 61 and end face 62, wherein the annular solid 61 is interior
Wall forms the internal tooth engaged with planetary gear 2, and the axis hole 620 passed through for locating shaft 32 is offered on the end face 62.Institute
It is formed with a protrusion on the end face 62 stated, in being arranged with bearing 7 on the protrusion.
In use, the composite driving mechanism of the utility model to be mounted on to the inside of electric screwdriver, and described
The cutter shaft of two gear rings 6 and electric screwdriver interlocks, i.e., the cutter shaft of electric screwdriver is driven by the second gear ring 6.Wherein, motor gear
Wheel 1, planetary gear 2, pinion frame 3, the first gear ring 5 constitute first order planetary gear set.Motor gear 1 is used as the first order
Sun gear in planetary gear set, the output axis connection with motor 10, three planetary gears 2 are evenly distributed on motor gear 1
Periphery, and the interior tooth engagement with the first gear ring 5 simultaneously.In the first order planetary gear set, motor gear 1 is defeated as power
Enter end, the first gear ring 5 is fixed, and three planetary gears 2 are used as power output end.It is defeated as power in this way according to transmission ratio
2 revolving speed of planetary gear of outlet declines, and torque increases.Three planetary gears 2 start rotation by the driving of motor gear 1, due to
Planetary gear 2 is engaged with the second gear ring 6 simultaneously, so the second gear ring 6 of driving is started to turn by planetary gear 2 while rotation
It is dynamic.
At the same time, planetary gear 2 will be simultaneously as the component in the new gear group of the second level, i.e. planetary gear 2, planet
Tooth rest 3 and the second gear ring 6 constitute second level planetary gear set.At this point, planetary gear 2 is used as power intake, the second gear ring 6
As power output end.Planetary gear 2 will revolve simultaneously while rotation, i.e., three planetary gears 2 will drive planetary gear
Frame 3 rotate, under this revolution, planetary gear 2 will driving torque be transferred to the second gear ring 6 being engaged with.In this way, according to biography
Dynamic ratio, 6 revolving speed of the second gear ring as power output end decline, and torque increases.
In above-mentioned two-stage planet group transmission mechanism, motor gear 1 passes through between planetary gear 2 and pinion frame 3
There are gearing, planetary gear 2 will carry out simultaneously rotation and revolve with around motor gear 1, and the rotation of planetary gear 2 is produced with revolution
Complex superposition is transferred on the second gear ring 6 by raw torque, finally enables the second gear ring 6 realize deceleration and torque increase, so that it is guaranteed that most
The revolving speed decline numerical value and torque increase numerical value of the second gear ring 6 output reach sets requirement eventually.In the process, pinion frame 3 rises
To the effect of stablizing three planetary gear 2.
Relative to existing similar product, the great advantage of the utility model in this way is exactly to shorten entire transmission
The axial length of mechanism, so as to enable the overall dimensions of electric screwdriver more compact, convenient for being suitable for various narrow spaces
Operating environment.Secondly, the utility model is relative to existing similar product, which reduce the components of product can convenient for assembling
The cost of product is effectively reduced.Finally, the utility model still reaches while reducing components and needs three-level in traditional product
The transmission ratio that planetary gear set is just able to achieve, to guarantee that the output revolving speed of electric screwdriver and torque reach requirement.
It certainly, is not to limit the utility model and implement the foregoing is merely specific embodiment of the utility model
Range, all equivalent change or modifications done according to structure, feature and principle described in present utility model application the scope of the patents, should all wrap
It includes in present utility model application the scope of the patents.
Claims (5)
1. a kind of composite driving mechanism for small-sized electric screwdriver, comprising: the motor gear driven by motor (10)
(1), planetary gear (2), the pinion frame (3) with planetary gear (2) cooperation engaged with motor gear (1), feature exists
In:
The composite driving mechanism further includes relatively-stationary first gear ring (5) and the second gear ring (6) as power output, described
The first gear ring (5) and the second gear ring (6) be superimposed and place along the axial direction of planetary gear (2), and the first gear ring (5) and the
Internal tooth in two gear rings (6) is engaged with the lower end of planetary gear (2) and upper end respectively.
2. a kind of composite driving mechanism for small-sized electric screwdriver according to claim 1, it is characterised in that: described
The second gear ring (6) include integrally formed annular solid (61) and end face (62), wherein the inner wall of the annular solid (61) at
Type has the internal tooth engaged with planetary gear (2).
3. a kind of composite driving mechanism for small-sized electric screwdriver according to claim 2, it is characterised in that: described
Pinion frame (3) be located at that the second gear ring (6) is internal, which has been downwardly extending and planetary gear (2)
The planetary gear shaft (31) of cooperation, which upwardly extends to be formed with cooperates with the end face (62) of the second gear ring (6)
Locating shaft (32).
4. a kind of composite driving mechanism for small-sized electric screwdriver according to claim 3, it is characterised in that: described
End face (62) on offer the axis hole (620) passed through for locating shaft (32).
5. a kind of composite driving mechanism for small-sized electric screwdriver according to any one of claim 2-4,
It is characterized in that: being formed with a protrusion on the end face (62), in being arranged with bearing (7) on the protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142871.7U CN208885883U (en) | 2018-07-18 | 2018-07-18 | A kind of composite driving mechanism for small-sized electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142871.7U CN208885883U (en) | 2018-07-18 | 2018-07-18 | A kind of composite driving mechanism for small-sized electric screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885883U true CN208885883U (en) | 2019-05-21 |
Family
ID=66506842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821142871.7U Expired - Fee Related CN208885883U (en) | 2018-07-18 | 2018-07-18 | A kind of composite driving mechanism for small-sized electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208885883U (en) |
-
2018
- 2018-07-18 CN CN201821142871.7U patent/CN208885883U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 201, building 2, 26 Dawei Dongfu Road, Houjie Town, Dongguan City, Guangdong Province, 523000 Patentee after: Dongguan lichen Electromechanical Technology Co.,Ltd. Address before: 523000 Second Floor, Building C, 29 Baohong Road, Baotun Community, Houjie Town, Dongguan City, Guangdong Province Patentee before: Dongguan Youchen Electromechanical Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20210718 |