Patent Application
20210379749
The present invention relates to a tool and, more particularly, to a pry tool for a wood structure, with the pry tool providing a labor saving effect by a special angle design.
A wood structure produced by nailing wooden boards and wooden slats is commonly used in daily life as a pallet for transporting cargo or a wooden platform in architecture. The above wood structure can be detached by the following methods:
1. Use a wooden board or a wooden slat as a pry bar, which is laborious and could damage the detached wooden boards of the wood structure. Furthermore, the wooden slat forming the pry bar could break during application of force, causing injury to the operator.
2. Directly strike the wood structure with an iron hammer to separate the wooden slats of the wood structure. Alternatively, a hammer can be used together with a nail remover. The hammer strikes the nail remover extending into a wooden slat of the wood structure to pry the wooden slat. However, the wooden slat of the wooden structure would be injured by the hammer, and the operator has to bend down or squat during the striking operation, which is laborious.
Therefore, there are no suitable pry tools for detaching wooden structures made by nailing wooden boards and wooden slats. The operator must squat during operation, which is laborious and relatively inconvenient. Thus, a need exists for a novel pry tool that mitigates and/or obviates the above disadvantages.
An objective of the present invention is to provide a pry tool for a wood structure, with the pry tool providing a labor saving effect by a special angle design.
A pry tool according to the present invention comprises a body, a claw member, and a fixing member. The body includes a base and a shank. The base extends along a first axis. The base includes a through-hole extending along the first axis and a through-slot extending in a radial direction perpendicular to the first axis. The base includes a side located opposite to the shank and having an arcuate bottom face. The arcuate bottom face defines a contact point configured for contacting with a working plan. A second axis intersects with the first axis and passes through the contact point. A third axis intersects with the second axis at an intersection which is the center of curvature of the arcuate bottom face. An angle between the third axis and the second axis is in a range of 5°-10°. The shank extends from the base along a fourth axis that intersects with the first axis at a common intersection where the second axis intersects with the first axis. An angle between the fourth axis and the second axis is in a range of 15°-25°. The claw member is coupled to the through-slot of the base. The fixing member is securely mounted in the through-hole and abuts against the claw member.
In an example, the angle between the third axis and the second axis is 10°.
In an example, the angle between the fourth axis and the second axis is 25°.
In an example, the shortest distance between the arcuate bottom face and the intersection of the third axis and the second axis is not larger than mm.
In an example, the base includes an inner arcuate face and an outer arcuate face opposite to the inner arcuate face. The radius of curvature of the inner arcuate face is larger than the radius of curvature of the outer arcuate face.
In an example, the claw member includes an intermediate portion and two claws extending from two opposite ends of the intermediate portion, respectively. The intermediate portion is coupled in the through-slot of the base. The two claws are configured to abut against the working plane.
In an example, the fixing member is riveted in the through-hole of the base and abuts against the intermediate portion of the claw member.
In an example, the pry tool further comprises a positioning member having a positioning portion and a clamping portion connected to the positioning portion. The shank includes a first positioning hole extending along the fourth axis. The fixing member includes a second positioning hole extending along the second axis. The positioning portion of the positioning member is removably received in the first positioning hole or the second positioning hole.
In an example, the clamping portion has U-shaped cross sections.
In an example, the shank includes a limiting hole extending in a radial direction perpendicular to the fourth axis and intercommunicating with the first positioning hole. The positioning member includes a limiting portion removably coupled in the limiting hole.
Thus, based on the special angle design of the base and the shank of the body of the pry tool according to the present invention, the operator can apply force easily when the contact point defined by the arcuate bottom face is used as a fulcrum on the working plane. Furthermore, the positioning member of the pry tool according to the present invention can clamp the wooden slat, such that the operator can press against the to-be-nailed wooden board (which has been disposed on the wooden slat) through the claw member.
The present invention will become clearer in light of the following detailed description of illustrative embodiments of this invention described in connection with the drawings.
With reference to
The base 11 further includes an inner arcuate face 115 and an outer arcuate face 116 opposite to the inner arcuate face 115. The radius of curvature of the inner arcuate face 115 is larger than the radius of curvature of the outer arcuate face 116. The shank 12 extends from the base 11 along a fourth axis A4 that intersects with the first axis A1 at a common intersection where the second axis A2 intersects with the first axis A1. An angle between the fourth axis A4 and the second axis A2 is in a range of 15°-25°. In the embodiment shown, the angle between the fourth axis A4 and the second axis A2 is 25°.
The claw member 20 includes an intermediate portion 21 and two claws 22 extending from two opposite ends of the intermediate portion 21, respectively. The intermediate portion 21 is coupled in the through-slot 112 of the base 11. The two claws 22 are configured to abut against the working plane P.
The fixing member 30 is securely mounted to the through-hole 111 of the base 11 and abuts against the claw member 20. In this embodiment, the fixing member 30 is riveted in the through-hole 111 and abuts against the intermediate portion 21 of the claw member 20, avoiding the claw member 20 from disengaging from the body 10.
Furthermore, the pry tool of the embodiment according to the present invention can further include a positioning member 40 having a positioning portion 41 and a clamping portion 42 connected to the positioning portion 41. The shank 12 of the body 10 includes a first positioning hole 121 extending along the fourth axis A4. The fixing member 30 includes a second positioning hole 31 extending along the second axis A2. The positioning portion 41 of the positioning member 40 is removably connected to the first positioning hole 121 (see
The shank 12 of the body 10 includes a limiting hole 122 extending in a radial direction perpendicular to the fourth axis A4 and intercommunicating with the first positioning hole 121. The positioning member 40 includes a limiting portion 43 removably coupled in the limiting hole 122. Thus, the positioning member 40 can be positioned in the limiting hole 122. Accordingly, when the positioning member 40 is not required, the positioning portion 41 of the positioning member 40 is coupled with the first positioning hole 121. On the other hand, when the positioning member 40 is required, the positioning portion 41 of the positioning member 40 is coupled with the second positioning hole 31 of the fixing member 30, such that the positioning portion 41 of the positioning member 40 extends along the first axis A1. As shown in
In view of the foregoing, based on the special angle design of the base 11 and the shank 12 of the body 10 of the pry tool according to the present invention, the operator can apply force easily when the contact point 114 defined by the arcuate bottom face 113 is used as a fulcrum on the working plane P. Furthermore, the positioning member 40 of the pry tool according to the present invention can clamp the wooden slat W, such that the operator can press against the to-be-nailed wooden board B (which has been disposed on the wooden slat W) through the claw member 20.
Although specific embodiments have been illustrated and described, numerous modifications and variations are still possible without departing from the scope of the invention. The scope of the invention is limited by the accompanying claims.
