초록 ▼

It is an object of the invention to provide a technique to improve usability of a workbench for a power tool. To achieve the object, a representative workbench for a power tool is provided with a table, first and second supports, a shaft, a handle body, a handle, a lock mechanism and a lock release

It is an object of the invention to provide a technique to improve usability of a workbench for a power tool. To achieve the object, a representative workbench for a power tool is provided with a table, first and second supports, a shaft, a handle body, a handle, a lock mechanism and a lock release member. The lock release member includes an elongated element disposed below the upper surface of the table and extending along the table toward the handle, and the lock of the table is released when the user pulls the elongated element in the longitudinal direction of the elongated element. According to the invention, the user can release the lock of the table simply by pulling the elongated element, so that ease of lock releasing operation is enhanced.

대표청구항 ▼

The invention claimed is: 1. A workbench for a power tool comprising: a table on which the power tool is placed; a first support leg having an upper end rotatably mounted on one end side of the table and a lower end, the first support leg extending downward toward an other end side of the table fro

The invention claimed is: 1. A workbench for a power tool comprising: a table on which the power tool is placed; a first support leg having an upper end rotatably mounted on one end side of the table and a lower end, the first support leg extending downward toward an other end side of the table from the upper end to the lower end; a second support leg having an upper end and a lower end, the upper end being mounted on the other end side of the table in such a manner as to be horizontally movable with respect to the table, the second support leg extending downward toward the one end side of the table from the upper end to the lower end and intersecting with the first support leg: a shaft that rotatably connects intersections of the first and second support legs: a handle held by a user of the workbench, the handle being disposed on the other end side of the table, wherein, when the user of the workbench raises or lowers the handle, the first and second support legs rotate on the shaft, so that the table is moved vertically between a lower position of a predetermined height and a upper position higher than the lower position, while horizontally moving with respect to the upper end of the second support leg, wherein the handle is slidably and pivotally connected to the table when the user of the workbench pulls the handle away from the table and raises or lowers the table; a lock mechanism comprising: at least one of a plurality of grooves that prevents the upper end of the second support leg and the table from moving with respect to each other in a direction to lower the table when the table is moved between the lower position and the upper position to lock the table in the upper position; a movable element that moves horizontally together with the upper end of the second support leg; an engaging member rotatably mounted on the table and facing the movable element; an upper position engagement recess that is formed in the movable element and engaged with the engaging member when the table is placed in the upper position; at least one intermediate position engagement recess that is formed in the movable element and engaged with the engaging member when the table is placed in an intermediate position between the upper position and the lower position; and an elastic member that applies a biasing force to the engaging member in a direction of engagement of the engaging member with the at least one intermediate position engagement recess or the upper position engagement recess; and a lock release member that releases the table locked by the lock mechanism, wherein the lock release member includes an elongated element disposed below the upper surface of the table and extending along the table toward the handle, and the lock mechanism is released when the user pulls the elongated element in the longitudinal direction of the elongated element away from and out of the at least one of the plurality of grooves, wherein, when the table is placed in the upper or intermediate position, the engaging member is rotated toward the movable element by the biasing force of the elastic member and is engaged with the upper position engagement recess or the intermediate position engagement recess, thereby locking the upper end of the second support leg and the table against relative movement with respect to each other, and when the engaging member is rotated away from the movable element by the pulling operation of the lock release member, the engaging member is disengaged from the upper position engagement recess or the intermediate position engagement recess, thereby releasing the lock mechanism. 2. The workbench as defined in claim 1, wherein: when the table is placed in the upper or intermediate position, a weight of the table acts in a direction that keeps the engaging member engaged with the upper position engagement recess or the at least one intermediate position engagement recess, the engaging member and the elongated element are connected to each other via an elastic element, the elastic element elastically deforms when the elongated element is pulled by the user with the en a in member engaged with the upper position engagement recess or the at least one intermediate position engagement recess, thereby allowing the operation of pulling the elongated element while maintaining the engagement of the engaging member with the engagement recess, and when the weight of the table is released, the elastic element is restored to its original state in which the elastic element is not subjected to elastic deformation, thereby disengaging the engaging member from the upper position engagement recess or the at least one intermediate position engagement recess. 3. The workbench as defined in claim 2, further comprising a biasing member that applies an upward biasing force to the table, wherein the biasing member is disposed between the table and the first or second support leg or between the first support leg and the second support leg and arranged such that the biasing member is held under load conditions in which the biasing member is acted upon by a downward load of the table when the table is located below the intermediate position, while the biasing member is held under no-load conditions in which the biasing member is not acted upon by the downward load of the table when the table is located between the intermediate position and the upper position. 4. The workbench as defined in claim 1, wherein the elongated element extends in a direction of pulling operation and a grip to be held by the user is formed on an extending end of the elongated element and extends in a direction that intersects with an extending direction of the elongated element. 5. The workbench as defined in claim 4, wherein the grip is located in a vicinity of the handle such that the user is able to hold the handle and the grip at a same time with one hand. 6. The workbench as defined in claim 2, wherein the elastic element is fitted over the elongated element with one end held in contact with the elongated element and the other in contact with the engaging member. 7. The workbench as defined in claim 3, wherein the biasing member comprises a compression coil spring disposed between the table and the first or second support leg and wherein, when the table is located below the intermediate position, ends of the coil spring contact the table and the first or second support leg respectively so that the coil spring is compressed, while, when the table is placed between the intermediate position and the upper position, at least one of the ends of the coil spring is disengaged from the associated table or the associated first or second support leg so that the coil spring is held in a free state.