CN201393148Y - Device for protecting motor of double-output electrodrill - Google Patents
Device for protecting motor of double-output electrodrill Download PDFInfo
- Publication number
- CN201393148Y CN201393148Y CN200920148884U CN200920148884U CN201393148Y CN 201393148 Y CN201393148 Y CN 201393148Y CN 200920148884 U CN200920148884 U CN 200920148884U CN 200920148884 U CN200920148884 U CN 200920148884U CN 201393148 Y CN201393148 Y CN 201393148Y
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- electric
- output shaft
- output
- motor
- electrodrill
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Abstract
The utility model discloses a device for protecting a motor of a double-output electrodrill. The device comprises a motor rotor shaft, an overload protection torsional spring sleeved on the motor rotor shaft, an electrodrill output shaft, an input gear connected with the electrodrill output shaft through a spline, and a double-output gear driving system, and is characterized in that a motor drives the electrodrill output shaft through the overload protection torsional spring sleeved on the motor rotor shaft, and the electrodrill output shaft drives the double-output gear driving system to achieve the purpose of rotation in opposite directions of the electrodrill output shaft and an internal gear output shaft. When overload occurs at the outer part, the motor rotor shaft slips and is not blocked in the overload protection torsional spring, thereby achieving the overload protection of the motor. The motor protecting device has the advantages of simple structure, high reliability and low cost.
Description
Technical field
The utility model relates to the electric motor protective device of electric drill protective device, particularly a kind of twin-output electric driller.
Background technology
At present, the new twin-output electric driller of releasing mostly is direct rotor axis of electric driving on the market, realize diaxon counter-rotation simultaneously by two-way gear reduction system, realize the needs of multi-functional drilling and complicated assembling, in the electric drill use of the type, because driving both direction simultaneously, motor rotates, the output of motor there is very high requirement, particularly to the fastening overload of big part, the motor rotation blockage heating is very big.To have only part be the band overload protection for the electric drill of Tui Chuing in the market; and the device of such overload protection is to use electronic overload protection substantially; as the patent No. be: ZL02217680.2 electric tool overload protective device; its principle is by the detection to current of electric; adhesive by dry-reed relay realizes the switch protection to motor; its cost is higher, and structure is complicated, and device for switching spare is fragile in the process of frequent switch protection.
Summary of the invention
The purpose of this utility model is to overcome existing twin-output electric driller does not have motor overload protection or overload protective device cost height; complex structure; the shortcoming that reliability is low; provide integrated modeization, modularization in one; simple in structure; the security performance height, easy for installation, the electric motor protective device of the suitable novel twin-output electric driller of producing in enormous quantities.
Of the present utility model solving the problems of the technologies described above, the technical scheme that is adopted is:
A kind of twin-output electric driller electric motor protective device comprises rotor axis of electric, is placed in the overload protection torsion spring on the rotor axis of electric, electric drill output shaft, the input gear that is connected by spline with the electric drill output shaft, and dual output gear drive.Motor drives the electric drill output shaft by the overload protection torsion spring that is placed on the rotor axis of electric, and the electric drill output shaft drives the dual output gear train assembly.Described dual output gear train assembly is characterized in that: by the rotation of the input gear on the electric drill output shaft, drive the power transmission shaft counter-rotation that is connected with internal gear, the anti-counter-rotation simultaneously of the power transmission shaft that the electric drill output shaft is connected with internal gear.Described overload protection torsion spring inside evenly scribbles lubricant grease, is inserted in rotor axis of electric and electric drill output shaft under the free state.
Relate to the design of twin-output electric driller electric motor protective device; various forms applicable to the electric drill electric motor protective device: it mainly is to drive the electric drill output shaft by rotor axis of electric by the overload protection torsion spring that is placed on the rotor axis of electric; the electric drill output shaft drives the dual output drive system, and the output shaft that dual output drive system realization electric drill output shaft is connected with internal gear is forced to rotate to export simultaneously in the other direction according to a certain percentage.When run into the output shaft overload in output procedure, before motor rotation blockage, rotor axis of electric is crossed under the effect that is loaded in the overload protection torsion spring owing to the outside and is skidded, thereby plays the effect of protection motor.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Embodiment
Below in conjunction with drawings and Examples invention is described in further detail.
Among Fig. 1: 1-electric drill shell, 2-motor, 3-motor bearings 1,4-screw; the 5-planetary gear, 6-gearbox-case, 7-box bearing; the 8-front end shell, 9-internal gear output shaft, 10-electric drill output shaft; 11-oiliness bearing 1,12-oiliness bearing 2,13-planet carrier; the 14-jump ring, 15-imports gear, 16-mandrel; 17-overload protection torsion spring, 18-rotor axis of electric, 19-motor bearings 2
Embodiment:
With reference to Fig. 1, the present invention includes electric drill shell (1), be positioned at the motor (2) of electric drill shell (1), rotor axis of electric (18), be placed in the overload protection torsion spring (17) between rotor axis of electric (18) and the electric drill output shaft (10), the input gear (15) that electric drill output shaft (10) connects by spline, input gear (15) drives planetary gear (5), and planetary gear (5) is slidingly matched with mandrel (16), and mandrel (16) is fixed on planet carrier (13) and the electric drill shell (1); Internal gear output shaft (9) is pressed into box bearing (7) inner ring and is slidingly matched with oiliness bearing 2 (12), and oiliness bearing 1 (11) is pressed into internal gear output shaft (9) and is slidingly matched with electric drill output shaft (10); Planetary gear (5) drives internal gear output shaft (9) backward rotation.So electric drill output shaft (10) self is being exported under the situation of rotating, and drives internal gear output shaft (9) and forces output in the other direction by certain speed reducing ratio.Internal gear output shaft (9) and electric drill output shaft (10) are forced output in the other direction by certain speed reducing ratio, drive the outside drill bit that is connected with it and force counter-rotation output by certain speed reducing ratio.When the torsional moment of the two-way output in outside surpass between overload protection torsion spring (17) and rotor axis of electric (18) and the electric drill output shaft (10) hold torsional moment tightly the time; rotor axis of electric (18) and electric drill output shaft (10) skid between overload protection torsion spring (17), and electric drill output shaft (10) stall and motor be stall not.
Claims (4)
1, a kind of twin-output electric driller electric motor protective device comprises rotor axis of electric (18), is placed in the overload protection torsion spring (17) between rotor axis of electric (18) and the electric drill output shaft (10).
2, twin-output electric driller electric motor protective device according to claim 1; it is characterized in that: described rotor axis of electric (18) is identical with electric drill output shaft (10) external diameter, described overload protection torsion spring (17) and rotor axis of electric (18) and electric drill output shaft (10) interference fit.
3, according to the twin-output electric driller electric motor protective device of claim 1, it is characterized in that: the gap between described rotor axis of electric (18) and the electric drill output shaft (10) remains between the 0.05mm to 0.35mm.
4, according to the twin-output electric driller electric motor protective device of claim 1, it is characterized in that: the endoporus of described overload protection torsion spring (17) scribbles lubricant grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920148884U CN201393148Y (en) | 2009-04-20 | 2009-04-20 | Device for protecting motor of double-output electrodrill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920148884U CN201393148Y (en) | 2009-04-20 | 2009-04-20 | Device for protecting motor of double-output electrodrill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201393148Y true CN201393148Y (en) | 2010-01-27 |
Family
ID=41599969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920148884U Expired - Fee Related CN201393148Y (en) | 2009-04-20 | 2009-04-20 | Device for protecting motor of double-output electrodrill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201393148Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914951A (en) * | 2016-06-29 | 2016-08-31 | 苏州工业职业技术学院 | Motor with overload protection structure |
| CN110146326A (en) * | 2019-05-06 | 2019-08-20 | 南京宁曦土壤仪器有限公司 | A kind of core-drilling machine |
| CN111659710A (en) * | 2020-06-18 | 2020-09-15 | 牟恒志 | Medical waste disinfection treatment equipment |
-
2009
- 2009-04-20 CN CN200920148884U patent/CN201393148Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914951A (en) * | 2016-06-29 | 2016-08-31 | 苏州工业职业技术学院 | Motor with overload protection structure |
| CN105914951B (en) * | 2016-06-29 | 2019-03-19 | 苏州工业职业技术学院 | A kind of motor with overcurrent protection structure |
| CN110146326A (en) * | 2019-05-06 | 2019-08-20 | 南京宁曦土壤仪器有限公司 | A kind of core-drilling machine |
| CN110146326B (en) * | 2019-05-06 | 2021-07-27 | 南京宁曦土壤仪器有限公司 | Core drilling machine |
| CN111659710A (en) * | 2020-06-18 | 2020-09-15 | 牟恒志 | Medical waste disinfection treatment equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20100420 |