CN203804873U - Automatic-shutdown electric screwdriver with changeable carbon brush - Google Patents
Automatic-shutdown electric screwdriver with changeable carbon brush Download PDFInfo
- Publication number
- CN203804873U CN203804873U CN201420112669.5U CN201420112669U CN203804873U CN 203804873 U CN203804873 U CN 203804873U CN 201420112669 U CN201420112669 U CN 201420112669U CN 203804873 U CN203804873 U CN 203804873U
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- motor
- screwdriver
- hole
- autostop
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an automatic-shutdown electric screwdriver with a changeable carbon brush. During operation of the electric screwdriver, a planetary gear set and a screwdriver spindle are driven through a motor to rotate, the projections of an inner gear ring are fitted to an ejecting member tightly, the inner gear ring is fixed constantly under the pressure of a torsion regulating spring, when the torsion applied to the screwdriver spindle exceeds a certain value, the projections of the inner gear ring eject the ejecting member, the torsion regulating spring is compressed, the inner gear ring rotates, the screwdriver spindle stops rotating due to large torsion, and a signal switch is popped while the inner gear ring ejects the ejecting member and controls the motor to shut down; the carbon brush of the screwdriver body can be mounted on the outer side of the screwdriver body to contact with the rear side of the motor and can be changed fast after a carbon brush cover sealing a through hole is detached during changing. Thus, usage is facilitated, and the screwdriver is applied to the field of electric screwdrivers.
Description
Technical field
The utility model relates to a kind of electric screw driver, particularly relates to replaceable and the electric screw driver that can autostop of a kind of carbon brush.
Background technology
Common electric screw driver can keep driver bit rotation after electric motor starting always, use the process of this type of electric screw driver for trip bolt, to there will be screw to be rotated at the end, the situation that motor still rotates, thus likely cause workpiece or screw to damage.
Meanwhile, most of electric screw drivers use brush motor, although this type of electric screw driver cost is lower, service life is shorter.The source of damage of this class electric screw driver, the overwhelming majority is all because the carbon brush of brush motor is completely consumed, and carbon brush can not be changed, cause motor to be scrapped, can not use thereby cause whole electric screw driver to damage, if maintenance, need to change motor, the flow process one of changing motor is that cost is higher, the 2nd, and Renewal process also bothers very much, must professional could operate.
Utility model content
For addressing the above problem, the utility model provides a kind of carbon brush replaceable and electric screw driver that can autostop.
The utility model solves the technical scheme that its technical problem adopts:
Replaceable and the electric screw driver that can autostop of a kind of carbon brush, comprise shell, be arranged at the motor in shell, screwdriver main shaft and be positioned at motor and screwdriver main shaft between planetary gearsets, the front end of shell is positioned at screwdriver main shaft and is arranged with torsion regulating sleeve outward, between the ring gear of torsion regulating sleeve and planetary gearsets, be provided with and hold out against part and torsion regulating spring, be connected with motor and be also provided with the signaling switch that holds out against part described in being close to, hold out against part comprise be positioned at the packing ring of torsion regulating spring one side and be positioned at packing ring and ring gear between push rod and be close to the steel ball of ring gear, ring gear is provided with some projections, the both sides that are positioned at motor afterbody on shell all have through hole, carbon brush is installed in through hole, also be provided with the carbon brush lid that is located at carbon brush outside and coordinates with through hole.
Be further used as the improvement of technical solutions of the utility model, in through hole, be provided with carbon brush putting groove, between carbon brush lid receiving through-hole and carbon brush putting groove, be connected with the outer wall thread of carbon brush putting groove.
Be further used as the improvement of technical solutions of the utility model, signaling switch is positioned at the inner side of packing ring.
Be further used as the improvement of technical solutions of the utility model, the front end of screwdriver main shaft is provided with driver bit installing hole.
Be further used as the improvement of technical solutions of the utility model, the afterbody of shell is provided with control circuit board, the start stop switch being connected with motor and the button of controlling start stop switch.
Be further used as the improvement of technical solutions of the utility model, control circuit board is provided with control chip and relay.
The beneficial effects of the utility model: this carbon brush electric screw driver replaceable and energy autostop rotates by driven by motor planetary gearsets and screwdriver main shaft in the course of the work, now, the projection of ring gear is close to and is held out against part, under the pressure of torsion regulating spring, ring gear keeps not turning, in the time that the suffered torsion of screwdriver main shaft exceedes certain value, the projection of ring gear will hold out against part jack-up, torsion regulating spring is compressed, ring gear rotation, screwdriver main shaft is because suffered torsion is compared with stopping the rotation greatly, when ring gear jack-up holds out against part, signaling switch is upspring, thereby by signaling switch control motor stopping, the carbon brush of this screwdriver can by be mounted in screwdriver outside with motor after side contacts, in the time carrying out carbon brush replacing, disassemble the carbon brush lid that through hole is sealed and can realize the convenient replacing to carbon brush, thereby more convenient use.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the cross-sectional view of the positive angle of the utility model embodiment;
Fig. 2 is the cross-sectional view of the utility model embodiment depression angle;
Fig. 3 is the utility model embodiment gabarit structural upright schematic diagram;
Fig. 4 is the utility model ring gear structural representation;
Fig. 5 is the utility model control circuit board structural representation.
Detailed description of the invention
With reference to Fig. 1～Fig. 5, the utility model is replaceable and the electric screw driver that can autostop of a kind of carbon brush, comprise shell 1, be arranged at the motor 2 in shell 1, screwdriver main shaft 3 and be positioned at motor 2 and screwdriver main shaft 3 between planetary gearsets 4, the front end of shell 1 is positioned at the outer torsion regulating sleeve 11 that is arranged with of screwdriver main shaft 3, between the ring gear 41 of torsion regulating sleeve 11 and planetary gearsets 4, be provided with and hold out against part and torsion regulating spring 43, be connected with motor 2 and be also provided with the signaling switch 5 that holds out against part described in being close to, hold out against part comprise be positioned at the packing ring 44 of torsion regulating spring 43 1 sides and be positioned at packing ring 44 and ring gear 41 between push rod 45 and be close to the steel ball 46 of ring gear 41, ring gear 41 is provided with some protruding 42, the both sides that are positioned at motor 2 afterbodys on shell 1 all have through hole 12, carbon brush 13 is installed in through hole 12, also be provided with the carbon brush lid 14 that is located at carbon brush 13 outsides and coordinates with through hole 12.
This carbon brush electric screw driver replaceable and energy autostop drives planetary gearsets 4 and screwdriver main shaft 3 to rotate by motor 2 in the course of the work, now, the projection 42 of ring gear 41 is close to and is held out against part, under the pressure of torsion regulating spring 43, ring gear 41 keeps not turning, in the time that the suffered torsion of screwdriver main shaft 3 exceedes certain value, the projection 42 of ring gear 41 will hold out against part jack-up, torsion regulating spring 43 is compressed, ring gear 41 rotates, screwdriver main shaft 3 is because suffered torsion is compared with stopping the rotation greatly, when ring gear 41 jack-up hold out against part, signaling switch 5 is upspring, thereby controlling motor 2 by signaling switch 5 shuts down, the carbon brush 13 of this screwdriver can be by being mounted to and the rear side contacts of motor 2 in screwdriver outside, carrying out carbon brush 13 while changing, disassemble the carbon brush lid 14 that through hole 12 is sealed and can realize the convenient replacing to carbon brush 13, thereby more convenient use.
As the utility model preferred embodiment, in through hole 12, be provided with carbon brush putting groove 15, between carbon brush lid 14 receiving through-holes 12 and carbon brush putting groove 15, be connected with the outer wall thread of carbon brush putting groove 15.
Carbon brush putting groove 15 is arranged in through hole 12, and gabarit is cylinder and hollow, and carbon brush 13 is placed in carbon brush putting groove 15, and by spring, the installation of carbon brush 13 is fixed.The outside of carbon brush putting groove 15 is provided with screw thread, and carbon brush lid 14 screws in through hole 12, and be threaded connection and realize the fixing of carbon brush lid 14 with the outside of carbon brush putting groove 15, and concordant with the surface of shell 1, can reach good appearance effect.
As the utility model preferred embodiment, control circuit board 21 is provided with control chip 211 and relay 212.
As the utility model preferred embodiment, signaling switch 5 is positioned at the inner side of packing ring 44.
As the utility model preferred embodiment, the front end of screwdriver main shaft 3 is provided with driver bit installing hole 31.
When in the time that the suffered torsion of screwdriver main shaft 3 exceedes certain numerical value, ring gear 41 will hold out against part jack-up, and torsion regulating spring 43 is compressed, and now, ring gear 41 can rotation, and screwdriver main shaft 3 is because suffered torsion is compared with large and stop the rotation.When ring gear 41 jack-up hold out against part, signaling switch 5 is upspring, thereby has inputted a signal to control chip 211, and control chip 211 control relays 212 disconnect the power supply of motor 2, and motor 2 stops.
As the utility model preferred embodiment, the afterbody of shell 1 is provided with control circuit board 21, the start stop switch 22 being connected with motor 2 and the button 23 of controlling start stop switch 22.
After signaling switch 5 is triggered, control relay 212 has disconnected the power supply of motor 2, and if desired motor 2 task again, must first unclamp button 23, then depresses button 23, can make motor 2 repeat above action.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (6)
1. replaceable and the electric screw driver that can autostop of a carbon brush, it is characterized in that: comprise shell (1), be arranged at the motor (2) in described shell (1), screwdriver main shaft (3) and be positioned at described motor (2) and screwdriver main shaft (3) between planetary gearsets (4), the front end of described shell (1) is positioned at the outer torsion regulating sleeve (11) that is arranged with of screwdriver main shaft (3), between the ring gear (41) of described torsion regulating sleeve (11) and planetary gearsets (4), be provided with and hold out against part and torsion regulating spring (43), be connected with described motor (2) and be also provided with the signaling switch (5) that holds out against part described in being close to, described hold out against part comprise be positioned at the packing ring (44) of torsion regulating spring (43) one sides and be positioned at described packing ring (44) and ring gear (41) between push rod (45) and be close to the steel ball (46) of ring gear (41), described ring gear (41) is provided with some projections (42), the both sides that are positioned at motor (2) afterbody on described shell (1) all have through hole (12), carbon brush (13) is installed in described through hole (12), also be provided with the carbon brush lid (14) that is located at described carbon brush (13) outside and coordinates with through hole (12).
2. replaceable and the electric screw driver that can autostop of carbon brush according to claim 1; it is characterized in that: in described through hole (12), be provided with carbon brush putting groove (15), between described carbon brush lid (14) receiving through-hole (12) and carbon brush putting groove (15), be connected with the outer wall thread of carbon brush putting groove (15).
3. replaceable and the electric screw driver that can autostop of carbon brush according to claim 1, is characterized in that: described signaling switch (5) is positioned at the inner side of packing ring (44).
4. and electric screw driver that can autostop replaceable according to the carbon brush described in any one in claim 1～3, is characterized in that: the front end of described screwdriver main shaft (3) is provided with driver bit installing hole (31).
5. replaceable and the electric screw driver that can autostop of carbon brush according to claim 1, is characterized in that: the afterbody of described shell (1) is provided with control circuit board (21), the start stop switch (22) being connected with motor (2) and the button (23) of controlling described start stop switch (22).
6. replaceable and the electric screw driver that can autostop of carbon brush according to claim 5, is characterized in that: described control circuit board (21) is provided with control chip (211) and relay (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112669.5U CN203804873U (en) | 2014-03-12 | 2014-03-12 | Automatic-shutdown electric screwdriver with changeable carbon brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112669.5U CN203804873U (en) | 2014-03-12 | 2014-03-12 | Automatic-shutdown electric screwdriver with changeable carbon brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203804873U true CN203804873U (en) | 2014-09-03 |
Family
ID=51443682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420112669.5U Expired - Fee Related CN203804873U (en) | 2014-03-12 | 2014-03-12 | Automatic-shutdown electric screwdriver with changeable carbon brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203804873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108818384A (en) * | 2018-08-15 | 2018-11-16 | 广州市溢丰电子科技有限公司 | A kind of electric screw driver |
-
2014
- 2014-03-12 CN CN201420112669.5U patent/CN203804873U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108818384A (en) * | 2018-08-15 | 2018-11-16 | 广州市溢丰电子科技有限公司 | A kind of electric screw driver |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203804873U (en) | Automatic-shutdown electric screwdriver with changeable carbon brush | |
| CN105196595B (en) | The press mechanism of oil press | |
| CN203292631U (en) | Tapping power head of servo motor | |
| CN202555519U (en) | Advertisement cleaner | |
| CN203804871U (en) | Electric screwdriver capable of automatically stopping | |
| CN203636719U (en) | Screwdriver capable of automatically selecting screwdriver heads | |
| CN204049197U (en) | A kind of safe squeezed juice cup | |
| CN204004407U (en) | Self-circulating machine sealing device | |
| CN203449226U (en) | Manual-automatic integrated electric screw driver | |
| CN202239989U (en) | Automatic tapping machine | |
| CN103264367B (en) | Electric screw driver | |
| CN203993656U (en) | A kind of universal hardware & tools jacket casing spanner | |
| CN203696884U (en) | Electric screwdriver with replaceable motor carbon brushes | |
| CN204602810U (en) | A kind of mill roll state homalocephalus detent mechanism | |
| CN208801282U (en) | A kind of food machinery electric wrench | |
| CN105345714A (en) | Household low-power electric screwdriver | |
| CN203804872U (en) | Press type electric screwdriver capable of changing carbon brush | |
| CN203542337U (en) | Grinding tool for conical valve sealing surface | |
| CN204954756U (en) | JP cabinet screw assembling and disassembling screwdriver | |
| CN204725332U (en) | A kind of hand-held electric mill with drifting dust function | |
| CN205363495U (en) | Manual coping instrument of electrode cap | |
| CN110076718A (en) | Screw dismounting tool | |
| JP2020032501A5 (en) | ||
| CN105598897A (en) | Electric screwdriver | |
| CN203418148U (en) | Protection mechanism of drilling machine motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20200312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |