[특허]Multi-stage trigger assembly for use in a pneumatic tool

Basso Industry Corp.

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특허 상세정보

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Multi-stage trigger assembly for use in a pneumatic tool

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B25F-005/02 B25F-005/00
출원번호	US-0591144 (2015-01-07)
등록번호	US-9975236 (2018-05-22)
우선권정보	TW-103200430 U (2014-01-09)
발명자 / 주소	Hua, Chiang Lee, Chin-Cheng
출원인 / 주소	Basso Industry Corp.
대리인 / 주소	The Mueller Law Office, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 35

초록
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A trigger assembly used in a pneumatic tool that includes a valve unit removably blocking a flow channel, includes a driving member, a trigger member and a positioning unit. The driving member is movable for actuating the valve unit to gradually unblock the flow channel. The trigger member is pressable to move relative to a tool body of the pneumatic tool and the driving member to drive movement of the driving member. The positioning unit includes first and second positioning structures inter-engaged for providing an indication when the trigger member is...

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1. A multi-stage trigger assembly adapted for use in a pneumatic tool, the pneumatic tool including a tool body that is formed with a flow channel for guiding an airflow, and a valve unit that removably blocks the flow channel, said multi-stage trigger assembly comprising: a driving member adapted to be mounted to the tool body and movable relative to the tool body along an axis (X) between first and second positions, said driving member being adapted to be coupled to the valve unit, and moving the valve unit to gradually unblock the flow channel so as to increase opening degree of the flow channel when said driving member is moved from the first position to the second position;a trigger member pressable to move relative to the tool body and said driving member to drive the movement of said driving member from the first position to the second position; anda positioning unit including first and second positioning structures that are adapted to be respectively provided at any two of said driving member, said trigger member and the tool body, said first and second positioning structures being misaligned and separated from each other when said trigger member is released, said first and second positioning structures being aligned and engaged with each other when said trigger member is pressed to move said driving member from the first position to an intermediate position located between the first and second positions;wherein said driving member has a mount portion, said trigger member being pivotally connected to said mount portion of said driving member;wherein said trigger member defines a retaining space therein for retaining said mount portion of said driving member, and has a bottom wall that has an inner surface partially defining said retaining space; andwherein said second positioning structure is provided at said inner surface of said bottom wall of said trigger member, said first positioning structure being provided at a bottom surface of said mount portion that faces said inner surface of said bottom wall. 2. The multi-stage trigger assembly as claimed in claim 1, wherein said driving member has a rod portion that extends along the axis (X) and that has an end adapted to abut against the valve unit, and an opposite end co-movably connected to said mount portion. 3. The multi-stage trigger assembly as claimed in claim 2, wherein said trigger member further has a press portion that is disposed at one side of said mount portion of said driving member opposite to the valve unit, and a pair of lateral walls that respectively extend from two lateral sides of said press portion toward the valve unit, said bottom wall extending from a bottom side of said press portion toward the valve unit and having two opposite ends respectively connected to said lateral walls, said press portion cooperating with said lateral walls and said bottom wall to define said retaining space thereamong for retaining said mount portion. 4. The multi-stage trigger assembly as claimed in claim 3, further comprising a connecting rod that extends through said lateral walls of said trigger member and said mount portion of said driving member in a direction perpendicular to the direction of the axis (X) for pivotally interconnecting said trigger member and said mount portion. 5. The multi-stage trigger assembly as claimed in claim 4, the tool body being further formed with an elongate operation space that extends in the direction of the axis (X), wherein said trigger member further has an upper end portion that extends upwardly from said press portion and that is disposed above said lateral walls, said multi-stage trigger assembly further comprising a limiting member that is disposed fixedly in the operation space and that is located at one side of said upper end portion opposite to the valve unit, said mount portion of said driving member having upper and lower sections that are respectively located above and below said connecting rod, said upper end portion abutting against said limiting member and said press portion abutting against said upper section of said mount portion when said driving member is at the first position, so that said trigger member is pressable to pivot relative to said driving member until said press portion abuts against said lower section of said mount portion, thereby driving movement of said driving member from the first position to the intermediate position, after which said trigger member can be pressed again to move toward the valve unit for driving movement of said driving member from the intermediate position to the second position. 6. The multi-stage trigger assembly as claimed in claim 1, wherein said second positioning structure is configured as a recess, said first positioning structure including a ball body and a resilient member that resiliently biases said ball body into said second positioning structure only when said driving member is at the intermediate position. 7. The multi-stage trigger assembly as claimed in claim 1, further comprising a resilient member that has opposite ends adapted to be respectively connected to the tool body and said driving member for resiliently biasing said driving member and said trigger member away from the valve unit.

이 특허에 인용된 특허 (35)

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Multi-stage trigger assembly for use in a pneumatic tool

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이 특허에 인용된 특허 (35)

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Multi-stage trigger assembly for use in a pneumatic tool

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이 특허에 인용된 특허 (35)

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