Patent Application
20140352498
1. Field of the Invention
The present invention relates to a striking tool, more especially to a hammer.
2. Description of the Prior Art
A hammer is a widely-used tool for striking. Specifically, hammers with different materials are adapted for striking different work pieces. For example, a steel hammer is adapted for metal work pieces such as nails, and a wooden or rubber hammer is adapted for modeling.
Some striking tools have handles with shock-absorbing mechanism or anti-slipping mechanism. For example, as shown in patent TW 424657, an axial receiving trough is formed in the handle, and plural shock-absorbing balls are received in the receiving trough. When the striking tool is used for striking an object, the shock-absorbing balls may move to the top of the receiving trough. Thereby, shock by the reaction force may be alleviated by the shock-absorbing balls.
Besides, smaller hammers for striking tiny work pieces have smaller mass, so smaller momentum can be provided. Thus, it is arduous to strike objects. On the other hand, patent TW 136461 disclosed a hammer with a core and a sleeve wherein the core is able to move along a specific direction for striking again. However, the structure is complicated and may be broken easily.
The main object of the present invention is to provide a hammer which has a simple structure and is more effective.
To achieve the above and other objects, a hammer of the present invention includes a handle, a head portion, and a striking mechanism.
The head portion is connected with an end of the handle and includes two strike elements. The two striking faces include a metal strike element and a resilient strike element which is made of resilient material. The striking mechanism is located in the receiving space and includes a slide axle and a striking member. The striking member has a through hole for being sleeved onto the slide axle. Thereby, the striking member is slidable in the receiving space and is able to alternatively strike an end of the head portion having the metal strike element or an end of the head portion having the resilient strike element.
Thereby, inertia striking force is provided to the strike elements by the striking member. Thus, the hammer can be used for striking objects more effectively.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
Please refer to
In the preferred embodiment of the present invention shown in
The head portion 20 has a receiving trough 23 located outside each of the open end portion 21 and the closed end portion 22. Each receiving trough 23 is adapted for receiving one of the metal strike element 41 and the resilient strike element 42. Preferably, the metal strike element 41 is disposed on the open end portion 21, and the resilient strike element 42 is disposed on the closed end portion 22. Specifically, the metal strike element 41 forms a cylinder-shaped first protrusion 411 and an annular groove around the first protrusion 411. The threaded hole 412 is formed on the first protrusion 411. The first protrusion 411 is disposed in the receiving trough 23 beside the open end portion 21, and the annular groove is engaged with an outer periphery of the open end portion 21. The resilient strike element 42 is substantially circular plate-shaped, and a circular second protrusion 421 is formed on the resilient strike element 42. A cylinder-shaped space is formed in the second protrusion 421. The second protrusion 421 is disposed in the receiving trough 23 beside the closed end portion 22.
Please refer to
The threaded rod 31 is inserted through the abutting piece 32 with a hole and is further inserted through the aperture 221 of the closed end portion 22 so that the threaded rod 31 is partially received in the receiving space. A head of the threaded rod 31 is located between the closed end portion 22 and the resilient strike element 42, and the abutting piece 32 is sandwiched between the head of the threaded rod 31 and the closed end portion 22. Thereafter, the striking member 33 is placed into the receiving space from the open end portion 21. The striking mechanism 30 is adapted for increasing force of striking, so a heavy and hard object has to be provided for inertia striking force. Thus, the striking member 33 is preferably cylinder-shaped and is made of metal. The striking member 33 forms a through hole so that the threaded rod 31 is able to be inserted through the through hole and that the striking member 33 is thereby sleeved onto the threaded rod 31. Thus, the striking member 33 is able to slide in the receiving space along the threaded rod 31. The metal strike element 41 is disposed beside the open end portion 21, and an end of the threaded rod 31 opposite to the head is screwed with the threaded hole 412 on the first protrusion 411. In use, referring to
In conclusion, the hammer of the present invention provides a striking mechanism which provides inertia striking force to increase striking force. In addition, the inertia momentum has a same direction with the direction in which the hammer is moved, so a user can strike an object with the hammer of the present invention with less force.
