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circular saw

A technology of electric circular saw and casing is applied in the field of electric circular saw with switch protection, which can solve the problems of safety protection failure, safety accidents and the like, and achieve the effect of avoiding safety accidents.

Active Publication Date: 2016-08-03
CHERVON (CHINA) TRADING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still such a problem that if the micro switch short circuit occurs, its safety protection will fail. At this time, the operator performs routine operations without knowing it, which may easily cause safety accidents.

Method used

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Embodiment Construction

[0029] For ease of description, the following "left", "right", "clockwise", and "counterclockwise" are all consistent with the directions shown in the drawings.

[0030] Such as figure 1 As shown, the electric circular saw 1 of the present invention includes a casing 10, a motor 11 and a saw blade 12 are arranged in the casing 10, and the motor 11 is connected to the saw blade 12 through a gear box assembly (not shown). A switch trigger 13 is provided on the handle portion of the casing 10, which can be powered on to start the motor 11. The electric circular saw 1 also includes a bottom plate 14, which is rotatably connected to the casing 10 through a pin shaft (not shown in the figure), and a compression spring is arranged between the casing 10 and the bottom plate 14 to force the two to have a tendency to move away from each other. 15. The bottom plate 14 is also provided with a depth support frame 16 that can slide along a chute (not shown) in the casing 10 and a movable ...

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PUM

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Abstract

The invention discloses an electric circular saw which comprises a shell, a switch trigger mounted and arranged in the shell, a switch control rod for limiting the travel of the switch trigger, a bottom plate, a depth support frame arranged on the bottom plate, a first connecting rod for limiting the travel of the depth support frame, and a movable control element with a driving part for driving the first connecting rod and a limiting part for limiting the switch control rod, wherein the moving distance between the driving part and the contact surface of the driving part and the first connecting rod is greater than or equal to that between the limiting part and the contact surface of the limiting part and the switch control rod. According to the electric circular saw, the switch protection is performed by a mechanical linkage mode, the electric circular saw is simple and reliable, and the safety accident caused by accidental starting of the electric circular saw can be effectively avoided.

Description

technical field [0001] The invention relates to an electric circular saw, in particular to an electric circular saw with switch protection. Background technique [0002] Circular saws have a blade that rotates at high speeds and a switch trigger that activates the motor. In the non-working state, if the saw blade is exposed, misoperation of the switch trigger will cause a major safety accident. Generally, a movable guard is set on the saw blade of the electric circular saw. In the working state, along with the relative movement of the electric circular saw and the workpiece, the movable guard will gradually expose the saw blade to cut the workpiece; in the non-working state, the movable guard will The saw blade is covered under the bias of the elastic element, thereby avoiding safety hazards caused by misoperation. But there is still such a problem that in the non-working state, along with the relative movement of the electric circular saw and the workpiece, the exposed sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D45/16B25F5/00
Inventor 邢黎杨鑫海纳·卢卡斯斯蒂芬·韦伯于尔根·加林
Owner CHERVON (CHINA) TRADING CO LTD