Speed change tool
A technology for shifting tools and rotating speeds, which is applied to manufacturing tools, gear transmission devices, portable mobile devices, etc., can solve the problems of complex mechanical structure of gear transmission mechanisms and the inability to truly realize the industrialization of automatic shifting.
Active Publication Date: 2015-02-04
POSITEC POWER TOOLS (SUZHOU) CO LTD
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Problems solved by technology
The above-mentioned automatic transmission mechanisms realize automatic gear shifting based on the change of the positional relationship between the mechanical structures corresponding to the change of the output torque. This mechanical transmission mechanism not only makes the internal mechanical structure of the gear transmission mechanism more complicated, but also due to the It is also rotating while moving axially, and the housing is relatively fixed, so when the speed change mechanism is shifting, the teeth of the rotating ring gear and the teeth of the anti-rotation device on the housing will collide with each other and it is difficult to meshing, so the purpose of automatic gear shifting and industrial implementation cannot be really realized
Method used
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Embodiment Construction
[0034] refer to Figure 1 to Figure 3b As shown, it is a structural schematic diagram of the first embodiment of the driving device of the variable speed tool control system of the present invention. A variable speed tool 9 includes a motor 2 , a power supply 1 for the motor, a main switch 13 for starting / stopping the motor, an output shaft 6 and a gear transmission mechanism 4 . The gear transmission mechanism 4 includes a first planetary gear set composed of a first planetary gear 40 and a first planetary carrier, a second planetary gear set composed of a second planetary gear 42 and a second planetary carrier 43, and is fixedly arranged on the tool housing The anti-rotation device 44 and the movable member 45 that can move axially. The driving device 5 is arranged on the gear transmission mechanism 4, and comprises a driving member 52 and a transmission member 51. The driving member of the present embodiment adopts an electromagnet device, including two permanent magnets 5...
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The invention discloses a speed change tool. The tool comprises a casing, a motor, an output shaft, a gear transmission mechanism, a signal generator and a control system, wherein the motor is arranged in the casing and outputs rotary power; the gear transmission mechanism is arranged between the motor and the output shaft to transmit the rotary output of the motor to the output shaft, and can output the rotate speed of the motor at various reduction ratios; the control system is electrically connected with the signal generator and matched with the gear transmission mechanism; and when the signal generator is triggered artificially, an electric signal is generated and transmitted to the control system, and the control system responds to the electric signal and controls the gear transmission mechanism to change the reduction ratio. The speed change tool can solve the problem of gear breaking generated during an automatic gear shifting process, the electrical performance is improved, and the service life is prolonged.
Description
[0001] This application is a divisional application of the Chinese invention patent application filed by the applicant on August 29, 2007 with the title of "variable speed tool and its variable speed control method" and the application number 200710131762.5. technical field [0002] The invention relates to a variable-speed tool, in particular to a tool driven by a motor with a variable-speed transmission mechanism that can output different rotational speeds, such as electric drills, screwdrivers and hammer drills. Background technique [0003] A variable speed tool, such as an electric drill, screwdriver and hammer drill, etc., has a variable speed transmission mechanism that can output different speeds to adapt to different load torques. The speed change transmission mechanism of the speed change tool usually includes a gear transmission mechanism connecting the motor and the output shaft and a control system. The control system changes the transmission ratio by changing th...
Claims
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IPC IPC(8): B25F5/00F16H3/44
Inventor 强尼·鲍瑞那图王家达张士松沃伦·布朗钟红风
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD