CN2730564Y - Electric spanner - Google Patents
Electric spanner Download PDFInfo
- Publication number
- CN2730564Y CN2730564Y CN 200420080125 CN200420080125U CN2730564Y CN 2730564 Y CN2730564 Y CN 2730564Y CN 200420080125 CN200420080125 CN 200420080125 CN 200420080125 U CN200420080125 U CN 200420080125U CN 2730564 Y CN2730564 Y CN 2730564Y
- Authority
- CN
- China
- Prior art keywords
- blocks
- inverting
- utility
- model
- electric wrench
- 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
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to an improvement in an electric wrench structure, comprising a rotation shaft provided with a couple of ratchet bar corresponding to the location of an inverting block, the top ends of a couple of inverting blocks which are in radial correspondence and can be directly drived by a reversible generator through a rotating wheel can respectively and separably engage with the ratchet bar. The inverting blocks are arc-shaped whose intermediate part can rotatably coupled with a support trunnion. The utility model has the advantages that the inverting blocks are made to two blocks which are in radial correspondence, the weight in the rotating wheel is evenly distributed, the vibratory sensation is small during operation, the low-geared mechanism of the gear wheel is canceled, with light weight and convenient operation.
Description
Technical field
The utility model relates to electric tool, particularly the improvement of electric wrench structure.
Background technology
More a kind of of existing electric wrench be monodromy to piece and single ratchet fit structure, although this part designs simplification in the course of the work because imbalance, shakes greatlyyer, introduce as Chinese patent 02111409.9 " a kind of centrifugal electric spanner ".In addition, the drive motors of general electric wrench all is to come carry-over moment by reduction gearing, causes this part structural volume to increase again, and cost improves.Weight increases simultaneously, and the user is more painstaking.
Summary of the invention
The purpose of this utility model is to provide a kind of good operating stability, weight electric wrench lighter, easy to use.
The utility model electric wrench comprises rotating shaft, is shaped on a pair of reverse ratchet corresponding to commutation piece position in the rotating shaft, a pair of radially corresponding commutation piece top and the ratchet separable engagement respectively that is directly driven by runner by reversible electric machine.The commutation piece is an arc, is rotatably connected with fulcrum in the middle of it, and its other end is inlayed the weighted spherical ball of being pushed up mutually by spring, and reversible electric machine is connected with the runner key.
The utility model piece that will commutate is made radially corresponding two, at the centrifugal action lower swing, makes that weight balancing distributes on the runner, and vibratory sensation is little during work.Select the high pulling torque reversible electric machine for use, cancelled gear reduction, make weight saving, easy to operate.
Description of drawings
Fig. 1 is the utility model example structure schematic diagram.
Fig. 2 is Figure 1A-A schematic cross-section.
Fig. 3 is Fig. 2 B-B schematic cross-section.
The specific embodiment
With reference to accompanying drawing, the axle of reversible electric machine 7 is connected with runner 3 keys, and radially corresponding fulcrum 2a and the 2b that is installed on runner 3 is set with commutation piece 1a and 1b, and this two commutations piece can be rotated around fulcrum 2a, 2b, constitutes lever construction.The top can be overlapped on the axle body of sleeved rotating shaft 4 and be shaped on a pair of radially ratchet 4a, 4b, its position and commutation piece over against.The tail end of commutation piece 1a and 1b respectively has blind hole, and the counterweight of packing in hole steel ball 8 also push up mutually by helical spring 9, and the pressure of change helical spring 9 can change the predetermined torque of sleeve.Mark 5,6 is respectively represented bearing among the figure.
The course of work:
After reversible electric machine 7 energisings, runner 3 is subjected to motor 7 transmissions and rotates, when turning to certain speed, commutation piece 1 counterweight end is because of being subjected to outwards swing of centrifugal action, the piece front end that commutates this moment is that fulcrum is inwardly swung with fulcrum 2, and with the ratchet 4a of rotating shaft 4 or 4b engagement (looking the motor forward or reverse), rotating shaft 4 is rotated synchronously, to be engaged in the loading and unloading of nut or bolt with runner 3.Commutation piece front end clashes into engagement because of need heavily covering, and should select for use the higher hardness steel to make.
Claims (3)
1, a kind of electric wrench, comprise rotating shaft (4), it is characterized in that rotating shaft (4) upward is shaped on a pair of reverse ratchet (4a), (4b) corresponding to commutation piece (1) position, a pair of radially corresponding commutation piece (1a), (1b) top and ratchet (4a), (4b) separable engagement respectively that directly drives by runner (3) by reversible electric machine (7).
2, electric wrench according to claim 1, the piece (1) that it is characterized in that commutating is an arc, is rotatably connected with fulcrum (2) in the middle of it, its other end is inlayed the weighted spherical ball (8) of being pushed up mutually by spring (9).
3, electric wrench according to claim 1 is characterized in that reversible electric machine (7) is connected with runner (3) key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080125 CN2730564Y (en) | 2004-10-11 | 2004-10-11 | Electric spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080125 CN2730564Y (en) | 2004-10-11 | 2004-10-11 | Electric spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2730564Y true CN2730564Y (en) | 2005-10-05 |
Family
ID=35050906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420080125 Expired - Fee Related CN2730564Y (en) | 2004-10-11 | 2004-10-11 | Electric spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2730564Y (en) |
-
2004
- 2004-10-11 CN CN 200420080125 patent/CN2730564Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |