1. A wrench structure, comprising a body, a rotation member, a drive rod, and a press rod, wherein:
the body has an inside formed with an axial receiving hole and has a peripheral wall formed with a transverse limit hole communicating with the receiving hole;
the rotation member is rotatably mounted on the body and has a first end formed with a plurality of ratchet teeth arranged in an annular manner;
the drive rod is movably mounted in the receiving hole of the body and has a first end provided with a plurality of engaging teeth meshing with the ratchet teeth of the rotation member and a second end formed with a groove facing the limit hole of the body, the groove of the drive rod has a side formed with an oblique face; and
the press rod is movably mounted in the limit hole of the body and has a first end formed with a through hole mounted on the drive rod and aligned with the groove of the drive rod, the through hole of the press rod has a wall that is movable to press the oblique face of the drive rod so as to move the drive rod away from the rotation member, thereby detaching the engaging teeth of the drive rod from the ratchet teeth of the rotation member.
2. The wrench structure in accordance with claim 1, wherein the body has a substantially U-shaped opened end formed with two pivot holes, the first end of the rotation member is pivotally mounted on the opened end of the body and is formed with a pivot hole, and the wrench structure further comprises a pivot shaft extended through the two pivot holes of the body and the pivot hole of the rotation member.
3. The wrench structure in accordance with claim 1, wherein the receiving hole of the body is extended to the opened end of the body.
4. The wrench structure in accordance with claim 1, wherein the rotation member has a second end formed with a driving head.
5. The wrench structure in accordance with claim 1, wherein the press rod has a second end protruded outward from the limit hole of the body.
6. The wrench structure in accordance with claim 1, further comprising a first elastic member mounted in the receiving hole of the body and urged between the second end of the drive rod and the body.
7. The wrench structure in accordance with claim 1, further comprising a second elastic member mounted in the limit hole of the body and urged between the first end of the press rod and the body.
8. The wrench structure in accordance with claim 1, further comprising a control ring rotatably mounted on the body and having an inner wall formed with an arc-shaped urging face that is movable to press the press rod toward the body.
9. The wrench structure in accordance with claim 1, wherein the fist end of the drive rod is formed with a screw bore, and the wrench structure further comprises a mounting head mounted on the first end of the drive rod and formed with the engaging teeth meshing with the ratchet teeth of the rotation member, and a screw member extended through the mounting head and screwed into the screw bore of the drive rod.
10. The wrench structure in accordance with claim 1, wherein the press rod has a plate shape, and the drive rod has a plate shape.
11. A wrench structure, comprising a body, a rotation member, a drive rod, and a press rod, wherein:
the body has an inside formed with an axial receiving hole and has a peripheral wall formed with a transverse limit hole communicating with the receiving hole;
the rotation member is rotatably mounted on the body and has a first end formed with a plurality of ratchet teeth arranged in an annular manner;
the drive rod is movably mounted in the receiving hole of the body and has a first end provided with a plurality of engaging teeth meshing with the ratchet teeth of the rotation member and a second end formed with a stepped hole facing the limit hole of the body and having a first side formed with an arc-shaped press edge and a second side formed with an arc-shaped resting edge; and
the press rod is movably mounted in the limit hole of the body and the stepped hole of the drive rod and has a first end formed with an oblique face rested on the press edge of the drive rod and a resting edge rested on the resting edge of the drive rod.
12. The wrench structure in accordance with claim 11, wherein the body has a substantially U-shaped opened end formed with two pivot holes, the first end of the rotation member is pivotally mounted on the opened end of the body and is formed with a pivot hole, and the wrench structure further comprises a pivot shaft extended through the two pivot holes of the body and the pivot hole of the rotation member.
13. The wrench structure in accordance with claim 11, wherein the receiving hole of the body is extended to the opened end of the body.
14. The wrench structure in accordance with claim 11, wherein the rotation member has a second end formed with a driving head.
15. The wrench structure in accordance with claim 11, wherein the press rod has a second end protruded outward from the limit hole of the body.
16. The wrench structure in accordance with claim 11, further comprising an elastic member mounted in the receiving hole of the body and urged between the second end of the drive rod and the body.
17. The wrench structure in accordance with claim 11, wherein the press rod has a plate shape, and the drive rod has a plate shape.
18. The wrench structure in accordance with claim 11, wherein the first end of the drive rod is formed with a screw bore, and the wrench structure further comprises a mounting head mounted on the first end of the drive rod and formed with the engaging teeth meshing with the ratchet teeth of the rotation member, and a screw member extended through the mounting head and screwed into the screw bore of the drive rod.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A combustion-powered driving tool for propelling fasteners into a workpiece, comprising:
a housing;
a power source located in said housing;
a nosepiece connected to a lower end of said power source;
a magazine associated with said housing and constructed and arranged for storing and sequentially feeding a plurality of fasteners to said nosepiece; and
a workpiece contact element associated with said nosepiece and comprising at least one tooth extending from said workpiece contact element and being constructed and arranged for gripping the workpiece to enable the tool to actuate when said magazine is arranged generally parallel to the workpiece.
2. The tool of claim 1 wherein said workpiece contact element includes a nose section constructed and arranged for generally surrounding said nosepiece, said at least one tooth extending from said nose section and being located between said magazine and said nosepiece.
3. The tool of claim 2 wherein said at least one tooth extends from said nose section at an oblique angle to an edge of said magazine oriented parallel to the workpiece.
4. The tool of claim 2 wherein said at least one tooth is arranged approximately 10\xb0 from a longitudinal axis of the tool and extends distally from said nose section toward said magazine.
5. The tool of claim 1 further including a pair of said teeth, each having a generally pointed end distally located from said nose section and constructed and arranged for engaging the workpiece.
6. The tool of claim 4 wherein said nose section has a generally rectangular cross-section and includes at least one prong located opposite from said pair of teeth, and spaced from said teeth to be further away from said magazine than said teeth.
7. The tool of claim 6 wherein said nose section further includes a pair of side teeth, each of which being located between said prong and one of said pair of teeth.
8. The tool of claim 1 wherein said pair of teeth are pointed andor constructed and arranged for surrounding a nail exit side of said nosepiece when viewed from a rear end of the tool.
9. A workpiece contact element for use with a combustion-powered driving tool for propelling fasteners into a workpiece, the tool including a housing, a power source located in the housing, a nosepiece associated with a lower end of the power source, and a magazine associated with the housing and configured for storing and sequentially feeding a plurality of fasteners to the nosepiece, the workpiece contact element comprising:
a nose section constructed and arranged for surrounding the nosepiece; and
at least one tooth extending from said nose section between the magazine and the nosepiece and constructed and arranged for engaging the workpiece when the magazine is generally parallel to the workpiece.
10. The workpiece contact element of claim 9 wherein said at least one tooth includes a pointed end and extends approximately 10\xb0 from a longitudinal axis of the tool and towards the magazine.
11. The workpiece contact element of claim 10 further including a pair of said teeth.
12. The workpiece contact element of claim 9 further including a pair of said teeth, and wherein said nosepiece includes a rear wall with a gap, and each of said teeth is located on a side of said gap.
13. The workpiece contact element of claim 10 wherein said nose section has a generally rectangular cross-section taken transversely to a longitudinal axis of the power source, and includes a prong located on an opposite side of said nose section from said at least one tooth and being spaced from said at least one tooth to be further from the magazine than said at least one tooth.
14. The workpiece contact element of claim 13 wherein said at least one tooth extends further distally from said nose section than said prong.
15. The workpiece contact element of claim 13 wherein said prong extends distally along a longitudinal axis of the nosepiece.
16. The workpiece contact element of claim 13 wherein said nose section further includes a pair of oppositely located side teeth, each one of said pair of side teeth formed between said prong and said at least one tooth.
17. A workpiece contact element for use with a combustion-powered driving tool for propelling fasteners into a workpiece, the tool including a housing, a power source located within the housing, a nosepiece associated with a lower end of the power source, and a magazine associated with the housing and configured for storing and sequentially feeding a plurality of fasteners to the nosepiece, the workpiece contact element comprising:
a nose section constructed and arranged for surrounding the nosepiece, said nose section having a generally rectangular cross-section viewed transversely to a longitudinal axis of the tool, said nose section having a front wall, a rear wall and a pair of sidewalls;
a pair of generally pointed teeth extending distally from said rear wall, being located between the magazine and the nosepiece and constructed and arranged for engaging the workpiece and for enabling actuation of the combustion-powered tool when the magazine is arranged generally parallel to the workpiece.
18. The workpiece contact element of claim 17 further including at least one prong depending from said front wall, located opposite and spaced from said pair of teeth and a pair of side teeth each depending from a corresponding one of said sidewalls, each one of said pair of side teeth located between one of said pair of teeth and said prong.