Grinder capable of seizing rotary shaft
First Claim
Patent Images
1. A grinder comprising:
- a housing;
a rotary shaft rotatably disposed in the housing; and
a press button unit including;
a button seat;
a press button member fitted in the button seat, two ends of the press button member respectively protruding from two ends of the button seat, the press button member being axially movable along an axis of the button seat, whereby the press button member is selectively moved toward an inner end of the button seat into an engaging position engaging the rotary shaft to stop rotation thereof, and moved toward an outer end of the button seat and located in a releasing position separated from the rotary shaft; and
a resilient mechanism disposed between the button seat and the press button member, the resilient mechanism serving to resiliently keep the press button member in the releasing position;
the press button unit being mounted on the housing, whereby by means of pressing the outer end of the press button member, when the press button member moves axially from the releasing position to the engaging position, the press button member rotates within the button seat allowing the press button member to move from the releasing position to the engaging position, when the press button member does not rotate, the press button member remains in the releasing position.
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Accused Products
Abstract
A grinder having a rotary shaft and a grinding disc mounted at a bottom end of the rotary shaft for grinding a work piece. A press button unit is disposed on a housing of the grinder. By means of pressing the press button unit, the rotary shaft of the grinder can be seized for replacement of the grinding disc. Before pressing the press button unit, a user must first angularly displace the press button unit. That is, the press button unit cannot be directly pressed without being first turned by a certain angle. Therefore, in operation, mis-touch of the press button unit can be avoided so as to avoid damage of the grinder.
44 Citations
18 Claims
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1. A grinder comprising:
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a housing; a rotary shaft rotatably disposed in the housing; and a press button unit including; a button seat; a press button member fitted in the button seat, two ends of the press button member respectively protruding from two ends of the button seat, the press button member being axially movable along an axis of the button seat, whereby the press button member is selectively moved toward an inner end of the button seat into an engaging position engaging the rotary shaft to stop rotation thereof, and moved toward an outer end of the button seat and located in a releasing position separated from the rotary shaft; and a resilient mechanism disposed between the button seat and the press button member, the resilient mechanism serving to resiliently keep the press button member in the releasing position;
the press button unit being mounted on the housing, whereby by means of pressing the outer end of the press button member, when the press button member moves axially from the releasing position to the engaging position, the press button member rotates within the button seat allowing the press button member to move from the releasing position to the engaging position, when the press button member does not rotate, the press button member remains in the releasing position.
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2. A grinder comprising:
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a housing; a rotary shaft rotatably disposed in the housing, a bottom end of the rotary shaft being for mounting a grinding disc; and a press button unit including; a button seat formed with a tunnel passing through the button seat from an inner end to an outer end thereof; a press button member fitted through the tunnel of the button seat, two ends of the press button member respectively protruding from two ends of the button seat, the press button member being axially movable along an axis of the button seat and rotatable within the button seat, whereby the press button member is selectively moved toward an outer end of the button seat and located in a releasing position and moved toward an inner end of the button seat into an engaging position engaging the rotary shaft;
when the press button seat is located in the releasing position, the press button member is rotated between a security position and an operation position;
when the press button member is rotated from the security position to the operation position, the press button member being movable from the releasing position to the engaging position; anda resilient mechanism having both compressional and torsional elastic functions, the resilient mechanism being disposed between the button seat and the press button member, whereby when the press button member is free from any external force, the resilient mechanism serves to resiliently push the press button member toward the releasing position and turn the press button member toward the security position; the press button unit being mounted in the housing, whereby when the press button member is positioned in the engaging position, the press button member engages the rotary shaft to stop rotation thereof. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A grinder comprising:
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a housing; a rotary shaft rotatably disposed in the housing, a bottom end of the rotary shaft being for mounting a grinding disc; and a press button unit including; a button seat formed with a tunnel passing through the button seat from an inner end to an outer end thereof;
a guide slot being formed on a circumferential wall of the button seat and communicating with an interior of the button seat, a front end and a rear end of the guide slot being displaced from each other both in axial direction and in radial direction of the button seat;a button stem having a stem body, a guide pin being inserted in the stem body, the button stem being fitted through the tunnel of the button seat, two ends of the button stem respectively protruding from two ends of the button seat;
the guide pin being received in the guide slot; anda resilient mechanism disposed between the button seat and the button stem for resiliently pushing the button stem toward outer end of the button seat into a releasing position where the guide pin is located at the front end of the guide slot;
whereby after the button stem is angularly displaced by a certain angle, the button stem is moved along an axis of the button seat from the releasing position toward inner end of the button seat into an engaging position where the guide pin is moved along the guide slot to the rear end of the guide slot;the press button unit being disposed in the housing, whereby when the button stem is positioned in the engaging position, the button stem engages the rotary shaft to stop rotation thereof. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification