Patent
Striking tool
| العنوان: | Striking tool |
|---|---|
| Patent Number: | 9,505,118 |
| تاريخ النشر: | November 29, 2016 |
| Appl. No: | 13/263027 |
| Application Filed: | April 09, 2010 |
| مستخلص: | A technique for improving the vibration-proof effect and usability of a handle is provided in an impact tool. An impact tool is provided which linearly drives a tool bit in an axial direction thereof to cause the tool bit to perform a predetermined hammering operation. The impact tool includes a motor, a striking mechanism part, that is driven by the motor and causes the tool bit to linearly move, a tool body that houses the motor and the striking mechanism part, an outer shell housing that covers at least part of the tool body and is connected to the tool body via a vibration-proofing first elastic element so as to be movable in a direction transverse to the axial direction of the tool bit with respect to the tool body, and a handle which is designed to be held by a user and connected to an opposite side of the outer shell housing from the tool bit via a vibration-proofing second elastic element so as to be movable in the axial direction of the tool bit with respect to the outer shell housing. |
| Inventors: | Furusawa, Masanori (Anjo, JP); Kasuya, Yoshihiro (Anjo, JP); Takeuchi, Hajime (Anjo, JP) |
| Assignees: | MAKITA CORPORATION (Anjo-Shi, JP) |
| Claim: | 1. An impact tool which linearly drives a tool bit in an axial direction of the tool bit to cause the tool bit to perform a predetermined hammering operation, comprising: a motor, a striking mechanism part that is driven by the motor and causes the tool bit to linearly move, a tool body that houses the motor and the striking mechanism part, an outer shell housing that covers at least part of the tool body, a first elastic element that elastically connects the outer shell housing to the tool body such that the outer shell housing can move in a direction transverse to the axial direction of the tool bit with respect to the tool body, a handle designed to be held by a user, a second elastic element that connects the handle to the outer shell housing such that the handle can move in the axial direction of the tool bit with respect to the tool body, wherein the tool body has a barrel extending in the axial direction of the tool bit, the first elastic element is interveningly disposed between an outer circumferential surface of the barrel and an inner circumferential surface of the outer shell housing which covers the barrel, and the first elastic element positions the outer shell housing in a radial direction with respect to the tool body, and wherein the striking mechanism comprises a motion converting element and a striking element, the striking element is at least partly housed by the barrel of the tool body, a plurality of third elastic elements that can elastically deform in the direction transverse to the axial direction of the tool bit, and a rod-like member which is provided in the tool body and slidably extends through the tool body in the axial direction of the tool bit, wherein: the outer shell housing is connected to the tool body via at least the plurality of third elastic elements and the second elastic element, the rod-like member serves as a guide rail for guiding movement of the outer shell housing in the axial direction of the tool bit with respect to the tool body, the rod-like member extends in the axial direction of the tool bit and an elastic element of the plurality of third elastic elements is mounted to each end of the rod-like member, and the tool body comprises a first hole that is disposed close to the tool bit and a second hole that is disposed remote from the tool bit in the axial direction of the tool bit, and the rod-like member is provided to penetrate the first and second holes. |
| Claim: | 2. The impact tool as defined in claim 1 , wherein the handle has a grip region extending in a direction transverse to the axial direction of the tool bit and one end of the grip region in an extending direction is connected to the outer shell housing by the second elastic element comprising a mechanical spring. |
| Claim: | 3. The impact tool as defined in claim 1 , wherein the outer shell housing is split into a plurality of split elements in the axial direction of the tool bit and formed by connecting the split elements to each other. |
| Claim: | 4. The impact tool as defined in claim 1 , comprising a dynamic vibration reducer which is provided in the tool body and reduces vibration of the tool body in the axial direction of the tool bit. |
| Claim: | 5. An impact tool, which linearly drives a tool bit in an axial direction of the tool bit to cause the tool bit to perform a predetermined hammering operation, comprising: a motor, a striking mechanism part that is driven by the motor and causes the tool bit to linearly move, a tool body that houses the motor and the striking mechanism part, an outer shell housing that covers at least part of the tool body, a handle that is designed to be held by a user and integrally formed on an opposite side of the outer shell housing from the tool bit, a plurality of first elastic elements that can elastically deform in a direction transverse to the axial direction of the tool bit, a second elastic element that can elastically deform in the axial direction of the tool bit, and a rod-like member which is provided in the tool body and slidably extends through the tool body in the axial direction of the tool bit, wherein: the outer shell housing is connected to the tool body via at least the plurality of first elastic elements and the second elastic element, the rod-like member serves as a guide rail for guiding movement of the outer shell housing in the axial direction of the tool bit with respect to the tool body, the rod-like member extends in the axial direction of the tool bit and a first elastic element of the plurality of first elastic elements is mounted to each end of the rod-like member, and the tool body comprises a first hole that is disposed close to the tool bit and a second hole that is disposed remote from the tool bit in the axial direction of the tool bit, and the rod-like member is provided to penetrate the first and second holes. |
| Claim: | 6. The impact tool as defined in claim 5 , wherein the rod-like member and the outer shell housing are connected to each other via the plurality of first elastic elements. |
| Claim: | 7. The impact tool as defined in claim 5 , comprising a dynamic vibration reducer which is provided in the tool body and reduces vibration of the tool body in the axial direction of the tool bit. |
| Claim: | 8. The impact tool as defined in claim 5 , wherein the striking mechanism comprises a motion converting element and a striking element, and the striking element is at least partly housed by the tool body. |
| Claim: | 9. An impact tool, which linearly drives a tool bit in an axial direction of the tool bit to cause the tool bit to perform a predetermined hammering operation, comprising: a motor, a striking mechanism part that is driven by the motor and causes the tool bit to linearly move, a tool body that houses the motor and the striking mechanism part, an outer shell housing that covers at least part of the tool body, a handle that is designed to be held by a user and integrally formed on an opposite side of the outer shell housing from the tool bit, a plurality of first elastic elements that can elastically deform in a direction transverse to the axial direction of the tool bit, a second elastic element that can elastically deform in the axial direction of the tool bit, and a rod-like member which is provided in the tool body and slidably extends through the tool body in the axial direction of the tool bit, wherein: the outer shell housing is connected to the tool body via at least the plurality of first elastic elements and the second elastic element, the rod-like member serves as a guide rail for guiding movement of the outer shell housing in the axial direction of the tool bit with respect to the tool body, the rod-like member extends in the axial direction of the tool bit and a first elastic element of the plurality of first elastic elements is mounted to each end of the rod-like member, and the rod-like member is provided with two elongate members, and the two elongate members are disposed on opposite sides of the axis of the tool bit to each other. |
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| Other References: | Office Action issued in Chinese Patent Application No. 201080016227.5 dated Oct. 9, 2013. cited by applicant Search Report issued in International Application No. PCT/JP2010/056459 dated Jul. 13, 2010 (with translation). cited by applicant Extended Search Report issued in European Patent Application No. 10761762.3 dated May 23, 2014. cited by applicant Office Action issued in Russian Patent Application No. 2011145571 dated Apr. 11, 2014 (with translation). cited by applicant Office Action issued in Chinese Patent Application No. 201080016227.5 dated Mar. 20, 2014. cited by applicant Office Action issued in Japanese Patent Application No. 2009-096498 dated Jun. 11, 2013. cited by applicant International Preliminary Report on Patentability issued in International Application No. PCT/JP2010/056459 dated Oct. 11, 2011 (w/ translation). cited by applicant Sep. 9, 2014 Office Action issued in Chinese Application No. 201080016227.5 (with translation). cited by applicant |
| Assistant Examiner: | Ferrero, Eduardo R |
| Primary Examiner: | Desai, Hemant M |
| Attorney, Agent or Firm: | Oliff PLC |
| رقم الانضمام: | edspgr.09505118 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |