CN201957405U - Charging type direct current scarifier - Google Patents
Charging type direct current scarifier Download PDFInfo
- Publication number
- CN201957405U CN201957405U CN201120023121XU CN201120023121U CN201957405U CN 201957405 U CN201957405 U CN 201957405U CN 201120023121X U CN201120023121X U CN 201120023121XU CN 201120023121 U CN201120023121 U CN 201120023121U CN 201957405 U CN201957405 U CN 201957405U
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- Prior art keywords
- gear
- direct current
- motor
- battery pack
- shaft
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a charging type direct current scarifier which comprises a housing case, a battery pack, a motor and a gear set, wherein the rear end of the housing case is provided with a handle, the battery pack is arranged in the housing case, the front end of the housing case is provided with a knife disk, the central axis of which is provided with a shaft gear, the output shaft of the motor is linked with the shaft gear through the gear set which comprises a transmission gear that is meshed with the shaft gear, a long gear with the lower end meshed with the transmission gear and an oblique gear sheathed on the long gear, the bottom of the oblique gear is provided with a friction sheet, an upper snap spring and a lower snap spring are embedded on the long gear, and a compressed spring supports between the friction sheet and the lower snap spring. As the charging type direct current scarifier is provided with the mechanical clutch structure consisting of the long gear, the oblique gear, the compressed sheet and the compressed spring, and a current protective device connected with the battery pack, thus playing a role in double overload protection, and preventing the motor from burning due to overload, and the charging type direct current scarifier has simple operation, is convenient for work, and has novel design and high practicability.
Description
Technical field
The utility model relates to a kind of garden instrument, and a kind of specifically have a dual-overload protection, can prevent the loosenning tiller that motor burns out because of overload.
Background technology
Existing direct current loosenning tiller basic structure comprises casing and tooth case, is arranged on the drive motors in the casing, drives the work of loosening the soil of loosenning tiller cutterhead by the secondary gear transmission, when this loosenning tiller cutterhead blocks, motor has the risk that burns out, and the working time is short, brings very big inconvenience.Patent Office of the People's Republic of China is disclosed on June 18th, 2008; Granted publication number is " transmission device of loosenning tiller " of " CN201072895Y "; it comprises that engine, worm screw reach and the worm gear that drives the cutter roller bearing rotation of loosening the soil; described worm and wheel is meshed; described engine links by drive mechanism and the drive that is enclosed within on the worm screw, and is provided with overcurrent protection structure between drive and worm screw.Though when this structure exceeds frictional force sphere of action between friction pulley and the drive at input torque, can skid automatically between friction pulley and the drive, play the overload protection of the input motor and the blade that loosens the soil.But its overcurrent protection structure complexity, production cost is higher, and when stuck, still can burn out the input motor because of unexpected at drive.
The utility model content
The purpose of this utility model is at the defective of above-mentioned prior art and deficiency, for people provide a kind of dual-overload protection that has, can prevent the loosenning tiller that motor burns out because of overload.
Technical solution adopted in the utility model is for achieving the above object: this rechargeable direct current loosenning tiller comprises that the rear end is provided with the casing of handle, be installed on the battery pack in the casing, motor and gear train, front end at casing is equipped with cutterhead, the central shaft of cutterhead is provided with shaft gear, the output shaft of motor is by gear train and shaft gear interlock, described gear train comprises the travelling gear with the shaft gear engagement, the spool gear of lower end and travelling gear engagement and be set in helical gear on the spool gear, the output shaft sidewall of described motor is provided with the helical teeth that is meshed with helical gear, be provided with friction plate in helical gear bottom, jump ring and lower circlip on setting-in on the spool gear, wherein go up jump ring and be positioned at helical gear top, lower circlip is positioned at the below of friction plate, is supported with the compression spring between friction plate and lower circlip.
Described going up between jump ring and the helical gear is lined with Upper gasket, is lined with lower gasket between compression spring and lower circlip.
Described battery pack links to each other with motor by current protective device.
Described casing is provided with the charging that links to each other with battery pack and inserts ear.
The handle place of described casing is provided with anti-self-lock switch, this anti-self-lock switch comprises switch case, switch trigger and trigger spring, be provided with T type groove at switch trigger sidewall, switch case is provided with the locking press button of band back-moving spring, this locking press button bottom is provided with the T connector that offsets with switch trigger rear end, the T type groove of this T connector flush switch trigger sidewall when locking press button is pressed.
The utility model is owing to be provided with the mechanical clutch structure of being made up of spool gear, helical gear, friction plate, compression spring, this structure drives the spool gear rotation by the frictional force of helical gear and friction plate, the resistance that is subjected to when cutterhead is during greater than this frictional force, and helical gear begins to skid.Therefore when loosening the soil operation, cutterhead is run into the stone brick and is blocked, and the output shaft of motor still can rotate, and can prevent that motor from burning out.And in casing, be provided with the current protective device that links to each other with battery pack, when current protective device detects current overload, cut off being connected of battery pack and motor automatically, played the dual-overload protection effect.Have simple to operately, work is convenient, and futuramic advantage has very high practicality.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the exploded view of the utility model mechanical clutch structure.
Fig. 3 is the structural representation of the anti-self-lock switch of the utility model.
Embodiment
As shown in Figure 1 and Figure 2, the utility model is a kind of rechargeable direct current loosenning tiller, it comprises that the rear end is provided with the casing 4 of handle 2, is installed on battery pack 6, motor 7 and gear train in the casing 4, front end at casing 4 is equipped with cutterhead 12, the central shaft of cutterhead 12 is provided with shaft gear 11, the output shaft 8 of motor 7 is by 11 interlocks of gear train and shaft gear, so can be by 12 rotations of gear set drive cutterhead, the work of loosening the soil during motor 7 work.Battery pack 6 in the housing 4 can be changed, and compares traditional interchange loosenning tiller, needn't attach one section long power line in the time of work, has avoided the danger of twisted wire, thereby has improved the safety of operation.Described casing 4 is provided with the charging that links to each other with battery pack 6 and inserts ear 3, can be by the external charge device to battery pack 6 chargings.Handle 2 places of described casing 4 are provided with anti-self-lock switch 1, this anti-self-lock switch 1 comprises switch case 1.1, switch trigger 1.3 and trigger spring 1.2, be provided with T type groove 1.4 at switch trigger 1.3 sidewalls, switch case 1.1 is provided with the locking press button 1.5 of band back-moving spring 1.6, these locking press button 1.5 bottoms are provided with the T connector 1.7 that offsets with switch trigger 1.3 rear ends, the T type groove 1.4 of this T connector 1.7 flush switch trigger 1.3 sidewalls when locking press button 1.5 is pressed.Therefore when locking press button 1.5 is pressed, behind the T type groove 1.4 of T connector 1.7 flush switch triggers 1.3 sidewalls, removes spacing to the rear end of switch trigger 1.3, could Push switch trigger 1.3, thus make motor 7 and battery pack 6 connections.Decontrol locking press button 1.5, under back-moving spring 1.6 restoring force effects, locking press button 1.5 is upspring, and the T connector 1.7 of its bottom is spacing to the rear end of switch trigger 1.5 again, switch trigger 1.3 can't be pulled, thereby avoided causing the accident by switch trigger 1.3 because of mistake.Described battery pack 6 links to each other with motor 7 by current protective device 5, when current protective device 5 detects current overload, cuts off being connected of battery pack 6 and motor 7 automatically, thereby protection motor 7 is not burnt out.
Described gear train comprises the travelling gear 10 with shaft gear 11 engagement, the spool gear 14 that lower end and travelling gear 10 mesh and be set in helical gear 9 on the spool gear 14, and output shaft 8 sidewalls of described motor 7 are provided with the helical teeth that is meshed with helical gear 9.Be provided with friction plate 17 in the bottom of helical gear 9, jump ring 19 and lower circlip 15 on setting-in on the spool gear 14, wherein go up jump ring 19 and be positioned at the top of helical gear 9, lower circlip 15 is positioned at the below of friction plate 17, between friction plate 17 and lower circlip 15, be supported with compression spring 13, and be lined with Upper gasket 18 between last jump ring 19 and the helical gear 9, between compression spring 13 and lower circlip 15, be lined with lower gasket 16.The principle of the mechanical clutch structure of being made up of spool gear 14, helical gear 9, friction plate 17, compression spring 13 is: because the restoring force of compression spring 13, make the bigger frictional force of existence between helical gear 9 and the spool gear 14, helical gear 9 can drive spool gear 14 by this frictional force and rotate; The resistance that is subjected to when cutterhead 12 is during greater than this frictional force, and spool gear 14 blocks, and helical gear 9 begins to skid.Therefore when loosening the soil operation, block in case cutterhead 12 is run into the stone brick, the output shaft 8 of motor 7 still can rotate, and can prevent that motor 7 from burning out.
Claims (5)
1. rechargeable direct current loosenning tiller, it comprises that the rear end is provided with the casing of handle (2) (4), be installed on the battery pack (6) in the casing (4), motor (7) and gear train, front end at casing (4) is equipped with cutterhead (12), the central shaft of cutterhead (12) is provided with shaft gear (11), the output shaft (8) of motor (7) is by gear train and shaft gear (11) interlock, it is characterized in that described gear train comprises the travelling gear (10) that meshes with shaft gear (11), the spool gear (14) of lower end and travelling gear (10) engagement and be set in helical gear (9) on the spool gear (14), output shaft (8) sidewall of described motor (7) is provided with the helical teeth that is meshed with helical gear (9), be provided with friction plate (17) in the bottom of helical gear (9), go up jump ring (19) and lower circlip (15) on the setting-in at spool gear (14), wherein go up jump ring (19) and be positioned at the top of helical gear (9), lower circlip position (15) is supported with compression spring (13) in the below of friction plate (17) between friction plate (17) and lower circlip (15).
2. rechargeable direct current loosenning tiller according to claim 1 is characterized in that described going up between jump ring (19) and the helical gear (9) is lined with Upper gasket (18), is lined with lower gasket (16) between compression spring (13) and lower circlip (15).
3. rechargeable direct current loosenning tiller according to claim 1 and 2 is characterized in that described battery pack (6) links to each other with motor (7) by current protective device (5).
4. rechargeable direct current loosenning tiller according to claim 3 is characterized in that described casing (4) is provided with the charging that links to each other with battery pack (6) and inserts ear (3).
5. rechargeable direct current loosenning tiller according to claim 4, the handle (2) that it is characterized in that described casing (4) locates to be provided with anti-self-lock switch (1), this anti-self-lock switch comprises switch case (1.1), switch trigger (1.3) and trigger spring (1.2), be provided with T type groove (1.4) at switch trigger (1.3) sidewall, switch case (1.1) is provided with the locking press button (1.5) of band back-moving spring (1.6), this locking press button (1.5) bottom is provided with the T connector (1.7) that offsets with switch trigger (1.3) rear end, and this T connector (1.7) is at the T type groove (1.4) of locking press button (1.5) flush switch trigger (1.3) sidewall when pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120023121XU CN201957405U (en) | 2011-01-25 | 2011-01-25 | Charging type direct current scarifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120023121XU CN201957405U (en) | 2011-01-25 | 2011-01-25 | Charging type direct current scarifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201957405U true CN201957405U (en) | 2011-09-07 |
Family
ID=44519920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120023121XU Expired - Fee Related CN201957405U (en) | 2011-01-25 | 2011-01-25 | Charging type direct current scarifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201957405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810175A (en) * | 2015-04-20 | 2015-07-29 | 杭州科明电子有限公司 | Anti-self-locking mechanism of trigger switch |
| CN105500297A (en) * | 2015-11-26 | 2016-04-20 | 杭州科明电子有限公司 | Reverse self-locking mechanism of trigger switch |
-
2011
- 2011-01-25 CN CN201120023121XU patent/CN201957405U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810175A (en) * | 2015-04-20 | 2015-07-29 | 杭州科明电子有限公司 | Anti-self-locking mechanism of trigger switch |
| CN105500297A (en) * | 2015-11-26 | 2016-04-20 | 杭州科明电子有限公司 | Reverse self-locking mechanism of trigger switch |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20180125 |