초록 ▼

A fastener driving tool includes a tool body. A driver guide is coupled to the tool body and defines a fastener driving channel though which fasteners are driven out. A magazine is coupled to the driver guide and serves to store the fasteners. A detecting device serves to detect when no fastener exi

A fastener driving tool includes a tool body. A driver guide is coupled to the tool body and defines a fastener driving channel though which fasteners are driven out. A magazine is coupled to the driver guide and serves to store the fasteners. A detecting device serves to detect when no fastener exists within the fastener driving channel. The detecting device includes a detection member and a detection recess formed in a fastener driving channel. The detection member has a front end in contact with the fasteners stored within magazine, so that the detecting member engages the detection recess when no fastener exists within the magazine and the fastener driving channel. The detection recess is positioned not to oppose the head of the fastener that has been fed into the fastener driving channel.

대표청구항 ▼

What is claimed is: 1. A fastener driving tool comprising: a tool body: a driver guide coupled to the tool body and defining a fastener driving channel; a magazine coupled to the driver guide and arranged and constructed to store plural types of fasteners that vary with respect to a length of a cor

What is claimed is: 1. A fastener driving tool comprising: a tool body: a driver guide coupled to the tool body and defining a fastener driving channel; a magazine coupled to the driver guide and arranged and constructed to store plural types of fasteners that vary with respect to a length of a corresponding fastener, wherein the plural types of fasteners are stored such that ends of the fasteners, opposite to the heads of the fasteners, are positioned within the magazine at the same reference level irrespective of differences in type, wherein only one type of the plural types of fasteners is stored within the magazine during a single driving operation; a pusher plate arranged and constructed to individually feed each of the corresponding fasteners of the plural types of fasteners into the fastener driving channel; a driver arranged and constructed to drive out each corresponding fastener fed into the fastener driving channel; a trigger operable by an operator in order to actuate the driver; an idle driving prevention device arranged and constructed to prevent the driving operation when no corresponding fastener exists within the fastener driving channel, the idle driving prevention device comprising: a stopper member coupled to the trigger and movable in response to the operation of the trigger; and a detection recess defined in an inner wall of the fastener driving channel in a position not opposing a head of the corresponding fastener that has been fed into the fastener driving channel, wherein the head of the corresponding fastener is driven via contact with the driver, wherein a restriction plate is disposed within the magazine and comprises an end portion, wherein the restriction plate is biased in a fastener feeding direction, wherein the restriction plate moves together with the pusher plate in the fastener feeding direction during the feeding of the corresponding fasteners, wherein the end portion of the restriction plate enters the detection recess when no corresponding fastener is positioned within the fastener driving channel, wherein when the end portion of the restriction plate is in the detection recess, the restriction plate engages the stopper member, inhibiting the further operation of the trigger; wherein the detection recess is disposed at a position, spaced in a direction opposite to the fastener driving direction, away from the head of the corresponding fastener having a longest available length accommodated by the magazine, when an end of the corresponding fastener fed into the fastener driving channel contacts a workpiece during the driving operation of the corresponding fastener through the fastener driving channel, wherein the end of the corresponding fastener is opposite to the head of the corresponding fastener. 2. A fastener driving tool as in claim 1, wherein the detection recess is disposed at a position, spaced in the fastener driving direction, away from the head of the corresponding fastener that has a shortest available length accommodated by the fastener driving channel. 3. A fastener driving tool as in claim 1, wherein the stopper member further includes an engaging recess and the restriction plate further includes a stopper edge, wherein the movement of the stopper member in response to the operation of the trigger is restricted when the stopper edge engages the engaging recess, and wherein an inclined surface with respect to the moving direction of the stopper member is formed on one of a portion of the stopper member adjacent to the engaging recess or the stopper edge of the restriction plate, so that the restriction plate is shifted in a direction away from the fastener driving channel through sliding contact between the inclined surface and the one of the portion of the stopper member or the stopper edge, as the stopper member moves in response to the operation of the trigger at least during the driving operation of a last corresponding fastener fed into the fastener driving channel. 4. A fastener driving tool comprising: a tool body; a driver guide coupled to the tool body and defining a fastener driving channel; a magazine coupled to the driver guide and arranged and constructed to store plural kinds of fasteners that vary with respect to length, wherein only a single kind of the plural kinds of available fasteners is stored within the magazine during a driving operation; and a detecting device arranged and constructed to detect when no fastener exists within the fastener driving channel, wherein the detecting device includes a detection member and a detection recess formed in the fastener driving channel, the detection member having a front end contact portion, wherein the front end contact portion is in contact with at least one fastener stored within the magazine, so that the front end of the detection member engages the detection recess when no fastener exists within the magazine and the fastener driving channel, wherein the detection member is movable by a distance greater than a thickness of the fastener when a last fastener has been driven out from the fastener driving channel, wherein the detection recess is positioned so as to not oppose to a head of the fastener that has been fed into the fastener driving channel, wherein the detection recess is disposed at a position, spaced in a direction opposite to the fastener driving direction, away from the head of the fastener having a longest available length accommodated by the magazine, wherein the detection recess position is determined at a point in time when an end of the fastener contacts a workpiece during the driving operation of the fastener through the fastener driving channel, wherein the end of the fastener is opposite to the head of the fastener. 5. A fastener driving tool as in claim 4, wherein the detection recess includes a first detection recess and a second detection recess, and wherein the first detection recess is disposed at a position, spaced in the fastener driving direction, away from the head of the fastener that has a shortest available length accommodated by the magazine, and wherein the second detection recess, spaced in a direction opposite to the fastener driving direction, away from the head of the fastener having the longest available length accommodated by the magazine, wherein the second detection recess position is determined at a point in time when the end of the fastener contacts the workpiece during the driving operation of the fastener through the fastener driving channel. 6. A fastener driving tool as in claim 4, further including a trigger operable by an operator in order to drive out the fastener fed into the fastener driving channel, and an engaging member coupled to the trigger so that the engaging member moves together with the trigger as the trigger is operated, and wherein the detection member is engageable with the engaging member to prevent the trigger from being operated when the front end of the detection member enters the detection recess. 7. A fastener driving tool as in claim 6, further including a driver that is movable within the fastener driving channel in order to apply an impact to the head of the fastener fed into the fastener driving channel when the trigger is operated. 8. A fastener driving tool as in claim 7, wherein the engaging member includes an engaging recess and the detection member includes an engaging edge engageable with the engaging recess, and wherein the engaging member has an inclined surface inclined with respect to the moving direction of the engaging member and formed at an entrance of the engaging recess, wherein the detection member is shifted in a direction away from the fastener driving channel through sliding contact between the inclined surface of the engaging recess and the engaging edge, wherein the detection member is shifted at least as the engaging member moves in response to the operation of the trigger, wherein the operation of the trigger is performed in order to drive out a last fastener fed into the fastener driving channel. 9. A fastener driving tool comprising: a tool body; a driver guide coupled to the tool body and defining a fastener driving channel; a magazine coupled to the driver guide and arranged and constructed to store plural kinds of fasteners that vary with respect to length, wherein only a single kind of the plural kinds of available fasteners is stored within the magazine during a driving operation; a detecting device arranged and constructed to detect when no fastener exists within the fastener driving channel, wherein the detecting device includes a detection member and a detection recess formed in the fastener driving channel, the detection member having a front end contact portion, wherein the front end contact portion is in contact with at least one fastener stored within the magazine, so that the front end of the detection member engages the detection recess when no fastener exists within the magazine and the fastener driving channel, wherein the detection member is movable by a distance greater than a thickness of the fastener when a last fastener has been driven out from the fastener driving channel, wherein the detection recess is positioned so as to not oppose to a head of the fastener that has been fed into the fastener driving channel; and a pusher plate biased in the fastener feeding direction toward the fastener driving channel and having a front end that contacts a last fastener included in a fastener strip when the last fastener is within the magazine and when the last fastener is within the fastener driving channel, so as to urge the fastener strip toward the fastener driving channel, wherein the pusher plate is a separate component from the detection member. 10. A fastener driving tool comprising: a tool body; a driver guide coupled to the tool body and defining a fastener driving channel; a magazine coupled to the driver guide and arranged and constructed to store at least one type of fastener, wherein the type of fastener can vary with respect to length; a detecting device arranged and constructed to detect when no corresponding fastener exists within the fastener driving channel, wherein the detecting device includes a detection member biased in a fastener feeding direction and contacting a last one of the at least one type of fastener within the magazine; a driver movable within the fastener driving channel in order to apply an impact to a head of the corresponding fastener, fed into the fastener driving channel, when the trigger is operated; an impact prevention device arranged and constructed to prevent application of the impact to the detecting member by the driver after the last corresponding fastener is driven out from the fastener driving channel by the driver; a trigger operable by an operator in order to drive out the corresponding fastener fed into the fastener driving channel; and an engaging member coupled to the trigger so that the engaging member moves together with the trigger as the trigger is operated, wherein the detection member is engageable with the engaging member to prevent the trigger from being operated when the detection device detects no corresponding fastener within the fastener driving channel, wherein the impact prevention device comprises a cam mechanism provided between the detection member and the engaging member, so that the detection member is moved away from the fastener driving channel as the engaging member is moved together with the trigger, at least when the trigger is operated to drive out the last corresponding fastener. 11. A fastener driving tool as in claim 10, wherein the engaging member moves substantially perpendicular to the fastener feeding direction and the cam mechanism includes an inclined surface formed on at least one of the engaging member or the detection member and the cam mechanism is inclined with respect to the moving direction of the engaging member. 12. A fastener driving tool as in claim 10 further comprising: a detection recess within the fastener driving channel; wherein the detecting member engages the detection recess after the last corresponding fastener is driven out of the fastener driving channel; and wherein the detection recess is positioned so as to not oppose the head of the corresponding fastener fed into the fastener driving channel.