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gear shifter

A technology of variable speed tools and rotating speed, which is applied in the direction of manufacturing tools, gear transmission devices, portable motorized devices, etc., to achieve the effect of prolonging the service life and avoiding gear grinding

Active Publication Date: 2011-12-07
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

[0045] Figure 15 is a side view of another embodiment of the variable speed tool of the present invention showing the signal generating means.

[0046] Figure 16 yes Figure 15 A top view of the variable speed tool, which further shows the side handle and the speed mode switch that selects high, low, and automatic modes.

[0047] Figure 17a is along Figure 15 A schematic cross-sectional view of the C-C line in the middle, which reveals a form of a trigger switch.

[0048] Figure 17b and Figure 17a Similarly, another form of trigger switch is revealed.

[0049] Figure 18 and Figure 16 Similar, but where the speed mode switch only has high and low gears.

[0050] Figure 19 and Figure 18 Similar, but it doesn't have a speed mode switch, just LED lights to show high and low speed status.

[0051] Figure 20 yes Figure 16 Simplified diagram of the internal circuitry of the variable speed tool shown.

[0052] Figure 21 yes Figure 20 Workflow diagram of...

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Abstract

The invention discloses a variable speed tool, which includes a motor, an output shaft, a gear transmission mechanism connecting the motor and the output shaft, and a control system. The control system includes a control unit and a driving device. The moving part moves between the second positions, and when the moving part is in the first position and the second position, the output shaft has different output characteristics. When the load torque changes to a predetermined value, the control unit first adjusts the torque transmitted by the motor to the gear transmission mechanism, and then controls the driving device to realize automatic gear shifting. The speed change tool of the invention can solve the problem of tooth beating generated in the process of automatic shifting, improves the electrical performance of the tool, and prolongs the service life of the tool.

Description

Technical field [0001] The invention involves a variable change tool, especially a tool that can output different speed transmission mechanisms driven by motor -driven transmission mechanisms, such as electric drills, screw batch and hammer drills. Background technique [0002] A variable change tool, such as electric drills, screw batch, and hammer diamonds, with variable transmission mechanisms to output different speeds to adapt to different load torque.The gear transmission mechanism of the transmission tool usually includes the gear transmission mechanism and the control system connecting the motor and the output shaft. The control system changes the transmission ratio by changing the meshing relationship with the gear transmission mechanism, so that the output shaft outputs different speeds.Among the existing technologies, the US Patent 6431289 introduced that the two inner gear of the planetary gear mechanism can be set along the axial direction, and the position of each ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F5/00F16H3/74
Inventor 王家达陈成忠张士松钟红风刘芳世强尼·鲍瑞那图沃伦·布朗保罗·安德罗
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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