Electric tool switch
A technology of electric tools and switches, which is applied in the field of improved inventions of power switches, and can solve problems such as unsafe switches, easily damaged lock tops, troublesome operation, etc.
Inactive Publication Date: 2014-11-19
瑞安市华通器具开关有限公司
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Problems solved by technology
The structure of this anti-self-locking mechanism is relatively complicated, and the lock top is easily damaged during long-term contact with the lock platform.
Another self-locking mechanism, in order to enable long-term energization after pressing the switch, a push rod is set on the switch housing, and a groove matching the push rod is set on the slide rod. After the handle is pressed and the power is turned on, the push rod will The push rod is pressed in, so that the push rod is inserted into the groove on the slide rod, and the slide rod is locked to make it in the conduction state, but the switch of this structure is very unsafe, and when the power is turned off, it is necessary to press the push rod again lever, so that it is separated from the slide bar, and then the slide bar can be returned to power off, and the operation is more troublesome
Method used
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[0016] Referring to the accompanying drawings, this electric tool switch includes a housing 1, a slide bar 6, and a handle 7. The handle 7 is connected to the slide bar 6, and a touch rod 5 is installed on the slide bar 6. The housing 1 There are static contacts 4 and moving contacts 3 inside, and the sliding rod 6 is slidably installed in the housing 1. When the sliding rod 6 moves down, it moves with the contact rod 5, and the contact rod 5 presses against the moving contact After 3, the moving contact piece 3 is made close to the static contact point 4. When the contact rod 5 moves down to the position, the moving contact piece 3 is in contact with the static contact point 4, so that the switch is in a conducting state. There is a cavity 8 on the handle 7, a hole (not shown in the figure) is set on the handle 1, a push rod 12 passes through the hole and is connected with the lower end of the locking piece 11, the lock The upper end of the stop piece 11 is located in the cav...
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The invention discloses an electric tool switch which comprises a shell body, a slide bar and a handle, wherein the handle is connected onto the slide bar; a feeler lever is mounted on the slide bar; a stationary contact and a movable contact piece are arranged in the shell body; the slide bar is mounted in the shell body in a sliding manner; the electric tool switch is characterized in that an accommodating cavity is formed in the handle; a hole site is formed in the shell body; a push rod penetrates through the hole site and is connected with the lower end part of a locking piece; the upper end part of the locking piece is positioned in the accommodating cavity; a locking groove is formed in one side wall of the locking piece; the body part of the handle is positioned above the locking groove; a pressing part is arranged on the push rod; a spring positioned between the pressing part and the shell body sleeves the push rod. According to the structure of the electric tool switch, when an operator operates an electric tool, only when the push rod is pressed first to push the locking piece, so that the locking piece is positioned completely in the cavity of the handle, the handle can be pressed to push the slide bar and the switch is further switched on, as a result, the defect that children can turn on the switch to start the electric tool by pressing the handle randomly is avoided and the safety of the electric tool in operation is ensured.
Description
technical field [0001] The invention relates to an improved invention of a power switch, in particular to an improved switch of an electric tool. Background technique [0002] The power tool switch is a power switch, which is used as a special switch on power tools such as drill presses, electric drills, electric hammers and other tools. In order to prevent unsafe operation caused by misuse, a hook key is generally set on the switch handle to achieve the anti-self-locking function. When using this structure, it is necessary to pull it backwards by hand, which is very inconvenient to use. Therefore, those skilled in the art have invented an anti-self-locking mechanism for electric tool switches. The rear end of the push button extends out of the switch handle, the front end is provided with a lock top matching the lock platform, and a compression spring is arranged between the front end of the push button and the switch handle. When it is working, under the action of the co...
Claims
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IPC IPC(8): H01H9/20H01H3/50
Inventor 卢剑锋
Owner 瑞安市华通器具开关有限公司