Scraper tool with quick blade change mechanism

A scraper tool comprising:

• a first clamping part provided with a first clamping portion and a first connecting portion and including a first slot arranged between the first clamping and the first connecting portions;
• a second clamping part provided with a second clamping portion and a second connecting portion and including a second slot arranged between the second clamping and the second connecting portions, wherein the second connecting portion is connected to the first connecting portion;
• a tightening mechanism provided with a slidable portion slidably engaged in the first and the second slots to movably connect to the first and the second clamping parts, wherein the tightening mechanism is movable to a tightening position in which the first and the second clamping parts are close to one another for tightly holding a blade therebetween and an untightening position in which the first and the second clamping parts are apart from one another for allowing the blade to be dissembled therefrom;
• and
• a locking mechanism including a locking member selectively restraining the tightening mechanism movably connected to the first clamping part, wherein the locking member is movable to a locking position and an unlocking position, wherein when the tightening mechanism is in the tightening position and the locking member is in the locking position, the locking member is unmoved and the tightening mechanism is restrained by the locking member to keep in the tightening position, and wherein when the locking member is in the unlocking position, the tightening mechanism is movable to the tightening and untightening positions;
• wherein the locking member is provided with a stopping portion selectively stopping the tightening mechanism facing the first clamping portion, wherein the tightening mechanism includes a limit member provided with a limiting portion selectively contacting with the stopping portion and a guided portion, wherein the limiting portion and the stopping portion face oppositely, wherein when the locking member is in the locking position and the tightening mechanism is in the tightening position, the limiting portion abuts against the stopping portion to allow the tightening mechanism to keep in the tightening position, and wherein when the tightening mechanism is in transition from the untightening to the tightening positions, the guided portion of the limit member is adapted to push the locking member toward its unlocking position.

A scraper tool comprising:

• a first clamping part provided with a first clamping portion and a first connecting portion and including a first slot arranged between the first clamping and the first connecting portions;
• a second clamping part provided with a second clamping portion and a second connecting portion and including a second slot arranged between the second clamping and the second connecting portions, wherein the second connecting portion is connected to the first connecting portion;
• a tightening mechanism provided with a slidable portion slidably engaged in the first and the second slots to movably connect to the first and the second clamping parts, wherein the tightening mechanism is movable to a tightening position in which the first and the second clamping parts are close to one another for tightly holding a blade therebetween and an untightening position in which the first and the second clamping parts are apart from one another for allowing the blade to be dissembled therefrom;
• and
• a locking mechanism including a locking member selectively restraining the tightening mechanism movably connected to the first clamping part, wherein the locking member is movable to a locking position and an unlocking position, wherein when the tightening mechanism is in the tightening position and the locking member is in the locking position, the locking member is unmoved and the tightening mechanism is restrained by the locking member to keep in the tightening position, and wherein when the locking member is in the unlocking position, the tightening mechanism is movable to the tightening and untightening positions;
• wherein the tightening mechanism includes a limit member provided with a first retaining portion and the locking member is provided with a second retaining portion selectively engaged with and disengaged from the first retaining portion, wherein the tightening mechanism is provided with a first guided portion and the locking member is provided with a second guided portion selectively engaged with and disengaged from the first guided portion, wherein the first and the second retaining portion are toothed, wherein when the locking member is in the locking position and the tightening mechanism is in the tightening position, the first and the second retaining portions engage with each other to allow the tightening mechanism to keep in the tightening position, and wherein when the tightening mechanism is in transition from the untightening to the tightening positions, the first guided portion is adapted to push the second guided portion to guide the locking member toward the unlocking position.

A scraper tool comprising:

• a first clamping part provided with a first clamping portion and a first connecting portion and including a first slot arranged between the first clamping and the first connecting portions;
• a second clamping part provided with a second clamping portion and a second connecting portion and including a second slot arranged between the second clamping and the second connecting portions, wherein the second connecting portion is connected to the first connecting portion;
• a tightening mechanism provided with a slidable portion slidably engaged in the first and the second slots to movably connect to the first and the second clamping parts, wherein the tightening mechanism is movable to a tightening position in which the first and the second clamping parts are close to one another for tightly holding a blade therebetween and an untightening position in which the first and the second clamping parts are apart from one another for allowing the blade to be dissembled therefrom;
• and
• a locking mechanism including a locking member selectively restraining the tightening mechanism movably connected to the first clamping part, wherein the locking member is movable to a locking position and an unlocking position, wherein when the tightening mechanism is in the tightening position and the locking member is in the locking position, the locking member is unmoved and the tightening mechanism is restrained by the locking member to keep in the tightening position, and wherein when the locking member is in the unlocking position, the tightening mechanism is movable to the tightening and untightening positions;
• wherein the locking member is provided with a stopping portion selectively stopping the tightening mechanism facing the first clamping portion and a guided portion opposite the stopping portion, wherein when the locking member is in the locking position and the tightening mechanism is in the tightening position, the slidable portion abuts against the stopping portion to allow the tightening mechanism to keep in the tightening position, and wherein when the tightening mechanism is in transition from the untightening to the tightening positions, the slidable portion is adapted to push the guided portion to guide the locking member toward its unlocking position;
• and
• wherein the locking mechanism includes a biasing member held between the locking member and the first clamping part biasing the locking member to the locking position, wherein the first clamping part defines a receptacle and one end of the biasing member is arranged in the receptacle, and wherein the locking member is provided with a mounting portion and another end of the biasing member capped on the mounting portion.

A scraper tool comprising:

• a first clamping part provided with a first clamping portion and a first connecting portion and including a first slot arranged between the first clamping and the first connecting portions;
• a second clamping part provided with a second clamping portion and a second connecting portion and including a second slot arranged between the second clamping and the second connecting portions, wherein the second connecting portion is connected to the first connecting portion;
• a tightening mechanism provided with a slidable portion slidably engaged in the first and the second slots to movably connect to the first and the second clamping parts, wherein the tightening mechanism is movable to a tightening position in which the first and the second clamping parts are close to one another for tightly holding a blade therebetween and an untightening position in which the first and the second clamping parts are apart from one another for allowing the blade to be dissembled therefrom;
• and
• a locking mechanism including a locking member selectively restraining the tightening mechanism movably connected to the first clamping part, wherein the locking member is movable to a locking position and an unlocking position, wherein when the tightening mechanism is in the tightening position and the locking member is in the locking position, the locking member is unmoved and the tightening mechanism is restrained by the locking member to keep in the tightening position, and wherein when the locking member is in the unlocking position, the tightening mechanism is movable to the tightening and untightening positions;
• wherein the locking member is provided with a stopping portion selectively stopping the tightening mechanism facing the first clamping portion and a guided portion opposite the stopping portion, wherein when the locking member is in the locking position and the tightening mechanism is in the tightening position, the slidable portion abuts against the stopping portion to allow the tightening mechanism to keep in the tightening position, and wherein when the tightening mechanism is in transition from the untightening to the tightening positions, the slidable portion is adapted to push the guided portion to guide the locking member toward its unlocking position;
• and
• wherein the locking mechanism includes a biasing member held between the locking member and the first clamping part biasing the locking member to the locking position, wherein the first clamping part defines a first hook hole and the locking member defines a second hook hole respectively, and one end of the biasing member is hooked in the first hook hole while another end of the biasing member is hooked in the second hook hole respectively, wherein the first hook hole and the locking member are arranged on opposite sides of the first slot, and wherein the first and the second hook holes are arranged on opposite sides of the first slot.