US 12,723,688 B2Granted

Telescopic pipe structure

AssigneeK&W Tools Co., Ltd.

InventorAldous Chao

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Abstract

A telescopic pipe structure comprises an inner pipe, an outer pipe, and an adjusting mechanism. The inner pipe is installed in a hollow portion of the outer pipe and can be displaced relative to the outer pipe to adjust the length of the telescopic pipe structure. The adjusting mechanism is mounted on the outer pipe and is used to fix the relative position between the outer pipe and the inner pipe. A protruding piece is provided on the outer surface of the inner pipe, while an inward protrusion is provided on the adjusting mechanism. When the protrusion on the adjusting mechanism contacts the protruding piece on the inner pipe, the inner pipe will be unable to elongate relative to the outer pipe, thereby preventing separation between the inner and outer pipes.

Claims15

Dependent claims

A telescopic pipe structure, comprising:

an outer pipe having a hollow portion, a positioning hole, and a fixing hole, wherein the positioning hole and the fixing hole are located on the outer pipe and communicate with the hollow portion;
an inner pipe having a plurality of adjustment holes disposed on the inner pipe, wherein the inner pipe is inserted into the hollow portion of the outer pipe and is moveable relative to the outer pipe along the hollow portion of the outer pipe;
and
an adjusting mechanism comprising:
including:
a main body having a sleeve hole, a connecting portion, and a through-hole, wherein the sleeve hole is sleeved on the outer pipe, and wherein the through-hole communicates with the sleeve hole;
a fitting part located in the through-hole of the main body and the fixing hole of the outer pipe to fix the main body and the outer pipe;
a clamping unit connected to the connecting portion of the main body via a shaft and contacting the fitting part to restrict the fitting part within the through-hole of the main body and the fixing hole of the outer pipe, wherein the clamping unit is rotatable relative to the main body to operate in a clamping position or a release position, wherein when the clamping unit is operated in the clamping position, the clamping unit presses the inner pipe through the fitting part whereby the inner pipe cannot move relative to the outer pipe, wherein when the clamping unit is operated in the release position, the fitting part will not press the inner pipe;
and
a positioning unit connected to the main body and having a positioning pin, wherein when the positioning pin enters the positioning hole of the outer pipe and a corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin locks the outer pipe and the inner pipe, and wherein when the positioning pin leaves the corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin will not lock the outer pipe and the inner pipe;
and
wherein the fitting part includes a base and a fixing protrusion, the fixing protrusion being connected to the base and being located within the fixing hole of the outer pipe, and the base being located within the through-hole of the main body.

9 more elements

A telescopic pipe structure, comprising:

an outer pipe having a hollow portion and a positioning hole, wherein the positioning hole is located on the outer pipe and communicates with the hollow portion;
an inner pipe having at least one protruding piece and a plurality of adjustment holes, wherein the at least one protruding piece is located on an outer surface of the inner pipe and protrudes from the outer surface of the inner pipe, wherein the plurality of adjustment holes are located on the inner pipe, and wherein the inner pipe is inserted into the hollow portion of the outer pipe and is moveable relative to the outer pipe along the hollow portion of the outer pipe;
an adjusting mechanism including:
a main body having a sleeve hole, a connecting portion, and a protrusion, wherein the sleeve hole is sleeved on the outer pipe, wherein the protrusion protrudes towards the sleeve hole, and wherein when the protrusion of the main body abuts the at least one protruding piece of the inner pipe, the inner pipe is unable to extend relative to the outer pipe to prevent the inner pipe from separating from the outer pipe;
a clamping unit connected to the connecting portion of the main body via a shaft, wherein the clamping unit is rotatable relative to the main body to operate in a clamping position or a release position, wherein when the clamping unit is operated in the clamping position, the clamping unit presses the inner pipe whereby the inner pipe cannot displace relative to the outer pipe, and wherein when the clamping unit is operated in the release position, the clamping unit will not press the inner pipe;
and
a positioning unit connected to the main body and having a positioning pin, wherein when the positioning pin enters the positioning hole of the outer pipe and a corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin locks the outer pipe and the inner pipe, and wherein when the positioning pin leaves the corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin will not lock the outer pipe and the inner pipe;
wherein the positioning unit includes a case, a spring, and a driving element, wherein the case has a housing space for accommodating the spring and the driving element, wherein the positioning pin is provided on the driving element, and wherein one of two ends of the spring abuts against an end wall of the case and another one of the two ends of the spring is connected to the driving element.

5 more elements

A telescopic pipe structure, comprising:

an outer pipe having a hollow portion and a positioning hole, wherein the positioning hole is located on the outer pipe and communicates with the hollow portion;
an inner pipe having at least one protruding piece and a plurality of adjustment holes, wherein the at least one protruding piece is located on an outer surface of the inner pipe and protrudes from the outer surface of the inner pipe, wherein the plurality of adjustment holes are located on the inner pipe, and wherein the inner pipe is inserted into the hollow portion of the outer pipe and is moveable relative to the outer pipe along the hollow portion of the outer pipe;
an adjusting mechanism including:
a main body having a sleeve hole, a connecting portion, and a protrusion, wherein the sleeve hole is sleeved on the outer pipe, wherein the protrusion protrudes towards the sleeve hole, and wherein when the protrusion of the main body abuts the at least one protruding piece of the inner pipe, the inner pipe is unable to extend relative to the outer pipe to prevent the inner pipe from separating from the outer pipe;
a clamping unit connected to the connecting portion of the main body via a shaft, wherein the clamping unit is rotatable relative to the main body to operate in a clamping position or a release position, wherein when the clamping unit is operated in the clamping position, the clamping unit presses the inner pipe whereby the inner pipe cannot displace relative to the outer pipe, and wherein when the clamping unit is operated in the release position, the clamping unit will not press the inner pipe;
and
a positioning unit connected to the main body and having a positioning pin, wherein when the positioning pin enters the positioning hole of the outer pipe and a corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin locks the outer pipe and the inner pipe, and wherein when the positioning pin leaves the corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin will not lock the outer pipe and the inner pipe;
and
wherein the at least one protruding piece has at least one convex portion provided on a surface of the at least one protruding piece and wherein the outer surface of the inner pipe has at least one concave portion for accommodating the at least one convex portion of the at least one protruding piece to set the at least one protruding piece on the outer surface of the inner pipe.

6 more elements

Dependencies are inferred from the claim text.

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Abstract

A telescopic pipe structure, comprising:

an outer pipe having a hollow portion, a positioning hole, and a fixing hole, wherein the positioning hole and the fixing hole are located on the outer pipe and communicate with the hollow portion;
an inner pipe having a plurality of adjustment holes disposed on the inner pipe, wherein the inner pipe is inserted into the hollow portion of the outer pipe and is moveable relative to the outer pipe along the hollow portion of the outer pipe;
and
an adjusting mechanism comprising:
including:
a main body having a sleeve hole, a connecting portion, and a through-hole, wherein the sleeve hole is sleeved on the outer pipe, and wherein the through-hole communicates with the sleeve hole;
a fitting part located in the through-hole of the main body and the fixing hole of the outer pipe to fix the main body and the outer pipe;
a clamping unit connected to the connecting portion of the main body via a shaft and contacting the fitting part to restrict the fitting part within the through-hole of the main body and the fixing hole of the outer pipe, wherein the clamping unit is rotatable relative to the main body to operate in a clamping position or a release position, wherein when the clamping unit is operated in the clamping position, the clamping unit presses the inner pipe through the fitting part whereby the inner pipe cannot move relative to the outer pipe, wherein when the clamping unit is operated in the release position, the fitting part will not press the inner pipe;
and
a positioning unit connected to the main body and having a positioning pin, wherein when the positioning pin enters the positioning hole of the outer pipe and a corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin locks the outer pipe and the inner pipe, and wherein when the positioning pin leaves the corresponding one of the plurality of adjustment holes of the inner pipe, the positioning pin will not lock the outer pipe and the inner pipe;
and
wherein the fitting part includes a base and a fixing protrusion, the fixing protrusion being connected to the base and being located within the fixing hole of the outer pipe, and the base being located within the through-hole of the main body.

9 more elements