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US 8,708,119 B2Granted
Power tool
AssigneeBasso Industry Corp.
InventorSan-Yih Su
Life of this patent
Estimating the term…
Abstract
A reciprocal switching structure of a ratchet wrench is provided and includes a case, a gear assembly, two gear racks, a reciprocal switching mechanism, and a transmission unit. The case has a first end and a second end, wherein the second end is adjacent to a gripping part of the ratchet wrench and is opposite to the first end. The gear assembly is pivotally disposed in the case. The two gear racks engage or disengage from the gear assembly reciprocally. The reciprocal switching mechanism is disposed in the case and includes two push rods and at least one reciprocal switching member. The transmission unit pivotally is disposed in the case, and is pivotally connected between the two gear racks for driving the two gear racks to be displaced.
Claims16
A reciprocal switching structure of a ratchet wrench, comprising:
- a case having a first end and a second end, wherein the second end is adjacent to a gripping part of the ratchet wrench and is opposite to the first end;
- a gear assembly pivotally disposed in the case;
- two gear racks engaging or disengaging from the gear assembly reciprocally;
- and
- a reciprocal switching mechanism disposed in the case, comprising:
- two push rods disposed in the case, wherein the two push rods are alternately displaced along a direction extending from the first end to the second end, in order to displace one of the two gear racks to engage or disengage from the gear assembly;
- and
- at least one reciprocal switching member connected between the two push rods, wherein the at least one reciprocal switching member drives one push rod to push against one gear rack for disengaging the gear assembly and the gear rack, thereby driving the other gear rack to be engaged with the gear assembly;
- and
- a transmission unit pivotally disposed in the case, wherein the transmission unit is pivotally connected between the two gear racks for driving the two gear racks to be displaced.
7 more elements
A power tool, comprising:
- a case;
- a ratchet pivotally disposed in the case;
- a first gear rack disposed movably in the case, wherein the first gear rack is engaged or disengaged from the ratchet;
- a second gear rack disposed movably in the case, wherein the second gear rack is disposed opposing the first gear rack and is engaged or disengaged from the ratchet in an alternating manner with the first gear rack;
- an elastic member connected between the first gear rack and the second gear rack, and which provides a biasing force to the first gear rack and the second gear rack in a direction toward the ratchet;
- a reciprocal switching mechanism, comprising:
- a first push rod linearly and displaceably disposed in the case for pushing the first gear rack away from the ratchet, wherein the first push rod comprises a first sliding block located at an end thereof, and the first sliding block is exposed outside of the case to allow for user manipulation of the first sliding block;
- and
- a second push rod linearly and displaceably disposed in the case for pushing the second gear rack away from the ratchet, wherein the second push rod comprises a second sliding block located at an end thereof, and the second sliding block is exposed outside of the case to allow for user manipulation of the second push rod;
- and
- a transmission unit pivotally disposed in the case, wherein the transmission unit is connected between the first gear rack and the second gear rack for driving the first gear rack and the second gear rack to be displaced reciprocally.
8 more elements
A power tool, comprising:
- a case;
- a ratchet pivotally disposed in the case;
- a first gear rack disposed movably in the case, wherein the first gear rack is engaged or disengaged from the ratchet;
- a second gear rack disposed movably in the case, wherein the second gear rack is disposed opposing the first gear rack and is engaged or disengaged from the ratchet in an alternating manner with the first gear rack;
- two elastic members, wherein one of the two elastic members is connected between the first gear rack and the first push rod, and the other elastic member is connected between the second gear rack and the second push rod;
- a reciprocal switching mechanism, comprising:
- a first push rod linearly and displaceably disposed in the case and abutted against the first gear rack, wherein the first push rod comprises a first sliding block located at an end thereof, and the first sliding block is exposed outside of the case to allow for user manipulation of the first sliding block;
- and
- a second push rod linearly and displaceably disposed in the case and abutted against the second gear rack, wherein the second push rod comprises a second sliding block located at an end thereof, and the second sliding block is exposed outside of the case to allow for user manipulation of the second push rod;
- and
- a transmission unit pivotally disposed in the case, wherein the transmission unit is connected between the first gear rack and the second gear rack for driving the first gear rack and the second gear rack to be displaced reciprocally.
8 more elements
Dependencies are inferred from the claim text.