TOOL HANDLE WITH HANDLE THAT IS ROTATABLE

A tool handle with a handle that is rotatable includes a tool head, a tool bar, and the handle. The handle is rotatably connected to a first end of the tool bar. The tool head is rotatably connected to a second end of the tool bar. Through rotations of the tool head and the handle, the tool handle has five states. In a first state, the tool handle is in a Z-shaped structure. In second state and fourth states, the tool handle is in an L-shaped structure. In a third state, the tool handle is in an I-shaped structure. In a fifth state, the tool handle is in a U-shaped structure. When the tool handle is in the second state or the fourth state, the handle cooperates with the tool bar to form an extended moment arm, and switch the tool handle between the second and fourth states.

TECHNICAL FIELD

The present disclosure relates to a technical field of hand tools, and in particular to a tool handle with a handle that is rotatable.

BACKGROUND

A tool handle is a fastening tool which is generally configured to install and disassemble various parts (such as a car tire) of a vehicle.

In order to save manpower, a conventional tool handle is generally L-shaped. The conventional tool handle generally comprises a tool head and a tool bar perpendicular to the tool head. The tool bar is acted as an extended moment arm, so an operator is able to apply a small force to a workpiece to output a large torque through the tool handle, thereby tightly fastening the workpiece or quickly loosening the workpiece to disassemble the workpiece. However, the operator needs to hold the tool bar to rotate the conventional tool handle during a rotation process. After the tool bar rotates by a certain angle, the operator needs to loosen his hand and rehold the tool bar so that the operator is able to apply force to the tool bar again to make the tool bar continue to rotate. During the rotation process, the operator needs to frequently release and rehold the tool bar to apply the force to the tool bar, resulting in a reduction in efficiency of the conventional tool handle, which slows down a speed of installation and disassembly of the workpiece.

In addition, on another case, in order to facilitate a rotation of the conventional tool handle, a handle is disposed on one end of the tool bar away from the tool head, which is convenient for the operator to apply force. The handle is fixedly connected to the tool bar acting as the extended moment arm, and the operator holds the handle to drive the tool bar to rotate around the tool head. Although the rotation of the conventional tool handle is convenient, it is inconvenient for a storage of the conventional tool handle.

Therefore, the present disclosure proposes a tool handle with a handle that is rotatable to solve above problems.

SUMMARY

A technical problem to be solved by the present disclosure is to provide a tool handle with a handle that is rotatable, which is convenient for holding and rotating, meets a demand for high torque, and is convenient for storage.

To solve the technical problem, the present disclosure provides the tool handle with the handle that is rotatable. The tool handle comprises a tool head, a tool bar, and the handle.

The tool head, the tool bar, and the handle are disposed in a same plane. The tool head is connected to a first end of the tool bar. The handle is rotatably connected to a second end, away from the tool head, of the tool bar through a first rotating structure. The handle is switched between a first position and a second position. When in the first position, a central axis of the handle is parallel to a central axis of the tool head. When in the second position, the central axis of the handle and a central axis of the tool bar are on a same line.

Optionally, the first rotating structure comprises a first connecting head, a first positioning column, and a second connecting head. A first groove is defined on the second connecting head. The first connecting head is inserted into the first groove and is rotatable in the first groove. The first connecting head is rotatably disposed in the first groove through a first rotating shaft. A second groove is defined in a bottom surface of the first groove. The first positioning column is extendable or retractable from the second groove. The first positioning column is movably installed in the second groove. The first positioning column is connected to a bottom surface of the second groove through a first spring.

A first positioning groove and a second positioning groove are defined on a side wall of the first connecting head. The first positioning column is inserted into the first positioning groove or the second positioning groove to enable the handle to switch between the first position and the second position. A surface of the side wall of the first connecting head between the first positioning groove and the second positioning groove is a first arc-shaped curved surface.

Optionally, the first connecting head is disposed on the tool bar, the second connecting head is disposed on the handle.

Optionally, first limiting protrusions are respectively disposed on one side of the first positioning groove away from the first arc-shaped curved surface and one side of the second positioning groove away from the first arc-shaped curved surface. A first spherical protrusion is disposed on one end of the first positioning column close to the first connecting head. The first spherical protrusion is matched with the first positioning groove and the second positioning groove.

Optionally, the tool head comprises a TORX hole structure, and the tool head is fixedly connected to the tool bar.

Optionally, the tool head is of a hexagonal rod-shaped structure or a quadrangular rod-shaped structure. The tool head is rotatably connected to the tool bar through a second rotating structure. The tool head is switched between a third position and a fourth position. When in the third position, the central axis of the tool head intersects the central axis of the tool bar. When in the fourth position, the central axis of the tool head and the central axis of the tool bar are on the same line.

Optionally, the tool handle comprises three states. In a first state, the tool head is switched to the third position, the handle is switched to the first position, the handle and the tool head are respectively disposed on different sides of the tool bar, and the tool handle is in a Z-shaped structure. In a second state, the tool head is switched to the third position, the handle is switched to the second position, and the tool handle is in an L-shaped structure. In a third state, the tool head is switched to the fourth position, the handle is switched to the second position, and the tool handle is in an I-shaped structure. Optionally, a structure of the second rotating structure is same as a structure of the first rotating structure.

Optionally, the tool head is switchable to a fifth position. In the fifth position, the central axis of the tool head intersects the central axis of the tool bar. The tool head in the third position and the tool head in the fifth position are located on two sides of the central axis of the tool bar. The tool handle comprises following state. In a first state, the tool head is switched to the third position, the handle is switched to the first position, and the handle and the tool head are located on different sides of the tool bar. The tool handle is of a Z-shaped structure. In a second state, the tool head is switched to the third position, the handle is switched to the second position, and the tool handle is of an L-shaped structure. In a third state, the tool head is switched to the fourth position, the handle is switched to the second position, and the tool handle is of an I-shaped structure. In a fourth state, the tool head is switched to the fifth position, the handle is switched to the second position, and the tool handle is of an L-shaped structure. In a fifth state, the tool head is switched to the fifth position, the handle is switched to the first position, the handle and the tool head are located on the same side of the tool bar, and the tool handle is of a U-shaped structure.

Optionally, the second rotating structure comprises a third connecting head, a second positioning column, and a fourth connecting head. A third groove is defined on the fourth connecting head. The third connecting head is inserted into the third groove and is rotatable in the third groove. The third connecting head is rotatably disposed in the third groove through a second rotating shaft. A fourth groove is defined in a bottom surface of the third groove. The second positioning column is extendable or retractable from the fourth groove. The second positioning column is movably installed in the fourth groove. The second positioning column is connected to a bottom surface of the fourth groove through a second spring. A third positioning groove, a fourth positioning groove, and a fifth positioning groove are defined on an end portion of the third connecting head. The second positioning column is inserted into the third positioning groove, the fourth positioning groove, or the fifth positioning groove to enable the tool head to switch between the third position, the fourth position, and the fifth position. A surface, between the third positioning groove and the fourth positioning groove, of the end portion of the third connecting head and a surface, between the fourth positioning groove and the fifth positioning groove, of the end portion of the third connecting head are second arc-shaped curved surfaces.

Optionally, the third connecting head is disposed on the tool bar. The fourth connecting head is disposed on the tool head.

Optionally, second limiting protrusions are respectively disposed on one side of the third positioning groove away from the second arc-shaped curved surfaces and one side of the fifth positioning groove away from the second arc-shaped curved surfaces. A second spherical protrusion is disposed on one end of the second positioning column close to the third connecting head. The second spherical protrusion is matched with the third positioning groove, the fourth positioning groove, and the fifth positioning groove.

Optionally, when the handle is switched is switched to the first position, an angle between the handle and the tool bar is 85-95 degrees.

In the present disclosure, the handle is rotatably connected to the second end of the tool bar away from the tool head through the first rotating structure, and the handle is switched between the first position and the second position. When the handle is switched to the first position, the central axis of the handle and the central axis of the tool head are parallel to each other, and the tool bar acts as a torsion arm. Through such arrangement, it is convenient for an operator to hold the handle and quickly rotate or turn the tool handle, so that an operation is fast.

When the handle is switched to the second position, the central axis of the handle and the central axis of the tool bar are on the same line. The handle cooperates with the tool bar to form an extended moment arm. When a large torque is required to increase a fastening strength of a workpiece during workpiece installation or when a large torque is required to loosen the workpiece at a beginning of workpiece disassembly, the operator only needs to apply a small force to the handle through the extended moment arm to output high torque output and meet high torque requirements. At the same time, under same torque requirement, an existence of the handle shortens a length of the tool bar. In a case that the handle and the tool bar are acted as the extended moment arm, the handle and the tool bar are coaxially disposed to facilitate the storage of the tool handle.

The tool head is rotatably connected to the tool bar through the second rotating structure. The tool handle is able to switch between different states. When the tool handle is in the first state, the tool handle is of the Z-shaped structure, which is convenient for the operator to hold the handle and rotate the tool handle quickly, thereby increasing an installing speed or a disassembling speed of the workpiece. The torsion arm is the largest when the tool handle is in the second state. In the third state, the tool handle is of the I-shaped structure, so the tool handle is rotated quickly in scenes that require less torque and a small space, and is also convenient for storage.

When the tool head switches between the third position, the fourth position, and the fifth position, the tool handle has the fourth state and the fifth state. After the tool handle rotates at a certain angle, such as about 180°, the operator is able to switch the tool handle between the second state and the fourth state, so the operator can maintain an original force direction to rotate the tool handle without frequently replacing force directions. The tool handle in the fourth state is also suitable for some situations where space is limited and a large range of 360° rotation cannot be performed. When the tool handle is in the fifth state, the tool handle is of the U-shaped structure. When the tool handle is in the fifth state, the operator is able to install or disassemble the workpiece at a rear side of the workpiece, which is applicable to some special scenarios where there is no operating space on a front side of the workpiece.

In the first rotating structure and the second rotating structure, the first positioning column installed in the second groove cooperates with the first spring, so the first positioning column is automatically embedded in the first positioning groove or the second positioning groove, realizing accurate switching of the handle in the first position and the second position. The second positioning column installed in the fourth groove cooperates with the second spring, so the second positioning groove is automatically inserted into the third positioning slot, the fourth positioning slot, or the fifth positioning groove, realizing accurate switching of the tool head in the third position, the fourth position and the fifth position.

The first connecting head is disposed on the tool bar, and the second connecting head is disposed on the handle, which effectively prevents the operator from pinching his palm during a rotation of the handle.

DETAILED DESCRIPTION

As shown inFIG.1, the present disclosure provides the tool handle with the handle that is rotatable. The tool handle comprises a tool head1, a tool bar2, and the handle3. The tool head1, the tool bar2, and the handle3are disposed in a same plane. The tool head1is connected to a first end of the tool bar2. The handle3is rotatably connected to a second end, away from the tool head, of the tool bar2through a first rotating structure4. The handle3is switched between a first position and a second position. When in the first position, a central axis of the handle3is parallel to a central axis of the tool head1. When the handle3is switched to the first position, the central axis of the handle3and the central axis of the tool head1are parallel to each other, and the tool bar acts as a torsion arm. Through such arrangement, it is convenient for an operator to hold the handle3and quickly rotate or turn the tool handle, so that an operation is fast. When the handle3is switched is switched to the first position, an angle between the handle3and the tool bar is 85-95 degrees. In one optional embodiment, the angle between the handle3and the tool bar is 90 degrees.

When in the second position, the central axis of the handle3and a central axis of the tool bar2are on a same line. The handle3cooperates with the tool bar2to form an extended moment arm, which is labor-saving. At the same time, the handle3and the tool bar2are coaxially disposed to facilitate the storage of the tool handle.

In one specific embodiment, the tool head1is of a hexagonal rod-shaped structure or a quadrangular rod-shaped structure. The tool head1is rotatably connected to the tool bar2through a second rotating structure5. The tool head1is switched between a third position and a fourth position.

When in the third position, the central axis of the tool head1intersects the central axis of the tool bar2. When in the fourth position, the central axis of the tool head1and the central axis of the tool bar2are on the same line.

At this time, the tool handle comprises three states. In a first state, the tool head1is switched to the third position, the handle3is switched to the first position. The central axis of the tool head1intersects the central axis of the tool bar2, and the central axis of the tool head is parallel to the central axis of the handle3. Both of the tool head1and the handle3form an angle of 90° with the tool bar2, and the handle3and the tool head1are respectively disposed on different sides of the tool bar2. The tool handle is in a Z-shaped structure, which is convenient for the tool handle to rotate quickly. In addition, in the first state, the operator with weak arm strength is able to step on the handle with his feet and rely on his own body weight to apply force on the tool handle, so as to solve a problem that the operator needs to apply force to the handle by his hand only due to the extended moment arm of the tool handle of an L-shaped structure is too close to a workpiece.

In a second state, the tool head1is switched to the third position, the central axis of the tool head1intersects the central axis of the tool bar2, and the angle between the tool head and the tool bar is 90 degrees. The handle3is switched to the second position. That is, the central axis of the handle3and the central axis of the tool bar2are on the same line, and the tool handle is in the L-shaped structure. The handle3cooperates with the tool bar2to form the extended moment arm, realizing output of a large torque.

In a third state, the tool head1is switched to the fourth position, and the handle3is switched to the second position. At this time, the central axis of the tool head1, the central axis of the tool bar2, and the central axis of the handle3are on the same line, and the tool handle is in an I-shaped structure. The tool handle in the third state is configured to connect to the workpiece in a small space, and is also convenient for storage.

In another specific embodiment of the present disclosure, the tool head1has a TORX hole structure, and the tool head1is fixedly connected to the tool bar2. A central axis of the TORX hole structure of the tool head1intersects the central axis of the tool bar2. Specifically, the central axis of the tool head1and the central axis of the tool bar2form an included angle of 90°. At this time, by adjusting a position of the handle3, the tool handle has two states to meet work requirements.

In one state, the central axis of the handle3is parallel to the central axis of the TORX hole structure of the tool head1. That is, the handle3is perpendicular to the tool bar2, and the tool handle is in the L-shaped structure, which is convenient for the operator to hold the handle and rotate the tool handle quickly.

In the other state, the central axis of the handle3and the central axis of the tool bar2are on the same line. The tool handle is the I-shaped structure, and the handle3cooperates with the tool bar2to form the extended moment arm to realize the output of the large torque.

A structure of the first rotating structure according to one specific embodiment is shown inFIGS.2-4.

The first rotating structure comprises a first connecting head41, a first positioning column43, and a second connecting head42. A first groove45is defined on the second connecting head42. The first connecting head41is inserted into the first groove45and is rotatable in the first groove45. The first connecting head41is rotatably disposed in the first groove45through a first rotating shaft44.

First through holes are defined on two sides of the first groove45. The first rotating shaft44is inserted into the first through holes. A second through hole is defined on the first connecting head41. The first rotating shaft44passes through the second through hole. The first rotating shaft44passes through first through holes to connect to the second connecting head42. A middle portion of the first rotating shaft44is movable in the second through hole, so that the first connecting head41is movably sleeved on an outer side of the first rotating shaft44and rotates around the first rotating shaft44. A central axis of the first rotating shaft44is perpendicular to the central axis of the handle3. A second groove46is defined in a bottom surface of the first groove45. The first positioning column43is extendable or retractable from the second groove46. The first positioning column43is movably installed in the second groove46. The first positioning column43is connected to a bottom surface of the second groove46through a first spring (not shown in the drawings).

One side of the first positioning column43away from the first connecting head41defines an accommodating groove432for accommodating the first spring. A first end of the first spring enters the accommodating groove432and is connected to a bottom surface of the accommodating groove432. A second end of the first spring is disposed in the second groove46and is connected to the bottom surface of the second groove46.

A first positioning groove411and a second positioning groove412are defined on a side wall of the first connecting head41. The first positioning column43is inserted into the first positioning groove411or the second positioning groove412to enable the handle3to switch between the first position and the second position. A surface of the side wall of the first connecting head41between the first positioning groove411and the second positioning groove412is a first arc-shaped curved surface413.

A first spherical protrusion431is disposed on one end of the first positioning column43close to the first connecting head41. The first spherical protrusion431is matched with the first positioning groove411and the second positioning groove412.

When the handle is rotated, the spherical protrusion431contacts and slides on the first arc-shaped surface413, and moves into the first positioning groove411or the second positioning groove412under an action of force of the first spring, so that the handle3is switched between the first position and the second position. Arrangements of the first positioning groove411and the second positioning groove412realize accurate positioning of the handle3between the first position and the second position, and effectively avoid positioning deviation due to inaccurate rotation angle of the handle, which prevents the handle3from falling off and hurting the operator during rotation. First limiting protrusions414are respectively disposed on one side of the first positioning groove411away from the first arc-shaped curved surface413and one side of the second positioning groove414away from the first arc-shaped curved surface. The first limiting protrusions414effectively prevent an operation error caused by reverse rotation of the handle. A handle cover31is coaxially sleeved on an outer side of the handle3, which is convenient for the operator to rotate the handle3.

In the embodiment, the first connecting head41is disposed on the handle3, the second connecting head42is disposed on the tool bar2.

In order to reduce production cost of the tool handle, as shown inFIGS.1and2, when the tool head1and the tool bar2are connected through the second rotating structure5, the second rotating structure5has a same structure as the first rotating structure4. The second rotating structure5comprises a third connecting head51having a same structure as the first connecting head41, a fourth connecting head52having a same structure as the second connecting head42, a third positioning groove511having a same structure as the first positioning groove411, a fourth position positioning groove512having a same structure as the second positioning groove, a second positioning column53having a same structure as the first positioning column43, and a second rotating shaft54having a same structure as the first rotating shaft44. The second rotating structure5further comprises other structures same as that of the first rotating structure. In the embodiment, a working principle of the second rotating structure5is same as that of the first rotating structure4, which is not repeatedly illustrated therein. It should be noted that the third connecting head51of the second rotating structure5is disposed on the tool head1, and the fourth connecting head52of the second rotating structure5is disposed on the tool bar2.

As shown inFIG.5, the present disclosure provides the tool handle with the handle that is rotatable. The tool handle comprises a tool head1a, a tool bar2a, and the handle3a. The tool head1a, the tool bar2a, and the handle3aare disposed in the same plane. The handle3ais connected to two ends of the tool bar2a.

The handle3ais rotatably connected to a first end of the tool bar2athrough the first rotating structure4a. The handle3ais switched between a first position and a second position. When in the first position, a central axis of the handle3ais parallel to a central axis of the tool head1a. When in the second position, the central axis of the handle3sand a central axis of the tool bar2aare on a same line.

The tool head1ais switchable between a third position, a fourth position, and a fifth position. When in the third position, the central axis of the tool head1aintersects the central axis of the tool bar2a. When in the fourth position, the central axis of the tool head1aand the central axis of the tool bar2aare on the same line. In the fifth position, the central axis of the tool head1aintersects the central axis of the tool bar2a. The tool head1ain the third position and the tool head1ain the fifth position are located on two sides of the central axis of the tool bar2a.

In the embodiment, an included angle between an axis of the handle3ain the first position and an axis of the tool bar2ais 90°; and an included angle between an axis of the tool head1aand an axis of the tool bar2ain the third position or the fifth position is also 90°.

In one specific embodiment of the present disclosure, as shown inFIGS.6-8, the first rotating structure4acomprises a first connecting head41a, a first positioning column43a, and a second connecting head42a. The first connecting head41ais disposed on the tool bar2a, and the second connecting head42ais disposed on the handle3a.

A first groove45ais defined on the second connecting head42a. The first connecting head41ais inserted into the first groove45aand is rotatable in the first groove45a. The first connecting head41ais rotatably disposed in the first groove45athrough a first rotating shaft44a. First through holes are defined on two sides of the first groove45a. The first rotating shaft44ais inserted into the first through holes. A second through hole is defined on the first connecting head41a. The first rotating shaft44apasses through the second through hole. The first rotating shaft44apasses through first through holes to connect to the second connecting head42a. A middle portion of the first rotating shaft44ais movable in the second through hole, so that the first connecting head41ais movably sleeved on an outer side of the first rotating shaft44aand rotates around the first rotating shaft44a. A central axis of the first rotating shaft44ais perpendicular to the central axis of the handle3a. A second groove46ais defined in a bottom surface of the first groove45a. The first positioning column43ais extendable or retractable from the second groove46a. The first positioning column43ais movably installed in the second groove46a. The first positioning column43ais movably installed in the second groove46aand is connected to a bottom surface of the second groove46athrough a first spring47a.

In the embodiment, one end of the first positioning column43aclose to the first spring47ais an outer stepped cylindrical structure, which is convenient for one end of the first spring47ato sleeve and fix.

A first positioning groove411aand a second positioning groove412aare defined on a side wall of the first connecting head41a. The first positioning column43ais inserted into the first positioning groove411aor the second positioning groove412ato enable the handle3ato switch between the first position and the second position. A surface of the side wall of the first connecting head41abetween the first positioning groove411aand the second positioning groove412ais a first arc-shaped curved surface413a.

A first spherical protrusion is disposed on one end of the first positioning column43aclose to the first connecting head41a. The first spherical protrusion is matched with the first positioning groove411aand the second positioning groove412a. When the handle is rotated, the spherical protrusion contacts and slides on the first arc-shaped surface413a, and moves into the first positioning groove411aor the second positioning groove412aunder an action of deforming force of the first spring47a, so that the handle3ais switched between the first position and the second position. Arrangements of the first positioning groove411aand the second positioning groove412arealize accurate positioning of the handle3abetween the first position and the second position, and effectively avoid positioning deviation due to inaccurate rotation angle of the handle. First limiting protrusions414aare respectively disposed on one side of the first positioning groove411aaway from the first arc-shaped curved surface413aand one side of the second positioning groove414aaway from the first arc-shaped curved surface. The first limiting protrusions414aare configured to cooperate with the first connecting head41aand the first positioning column43ato limit rotation of the handle3awith respect the tool bar2a.

For ease of use, a handle cover31ais coaxially sleeved on an outer side of the handle3a.

The second rotating structure comprises a third connecting head51a, a second positioning column53a, and a fourth connecting head52a. In the embodiment, the third connecting head51ais disposed on the tool bar2a. The fourth connecting head52ais disposed on the tool head1a.

A third groove55ais defined on the fourth connecting head52a. The third connecting head51ais inserted into the third groove55aand is rotatable in the third groove55a. The third connecting head51ais rotatably disposed in the third groove55athrough a second rotating shaft54a. A fourth groove56ais defined in a bottom surface of the third groove55a. The second positioning column53ais extendable or retractable from the fourth groove56a. The second positioning column53ais movably installed in the fourth groove56a. The second positioning column53ais connected to a bottom surface of the fourth groove56athrough a second spring57a. The second positioning post53aprotrudes outward under the elastic force of the second spring57aand abuts against an end surface of the third connecting head51a.

A third positioning groove511a, a fourth positioning groove512a, and a fifth positioning groove513aare defined on the end portion of the third connecting head51a. The second positioning column53ais inserted into the third positioning groove511a, the fourth positioning groove512a, or the fifth positioning groove513ato enable the tool head1ato switch between the third position, the fourth position, and the fifth position. For smooth positioning, a surface, between the third positioning groove511aand the fourth positioning groove512a, of the end portion of the third connecting head51aand a surface, between the fourth positioning groove512aand the fifth positioning groove513a, of the end portion of the third connecting head51aare second arc-shaped curved surfaces514a.

The third positioning groove511a, the fourth positioning groove512a, and the fifth positioning groove513aare recessed hemispherical grooves or grooves in a shape similar to a hemisphere.

A second spherical protrusion is disposed on one end of the second positioning column53aclose to the third connecting head. The second spherical protrusion is matched with the third positioning groove511a, the fourth positioning groove512a, and the fifth positioning groove513a.

Second limiting protrusions515aare respectively disposed on one side of the third positioning groove511aaway from the second arc-shaped curved surfaces and one side of the fifth positioning groove513aaway from the second arc-shaped curved surfaces. The second limiting protrusions515aare configured to limit the rotation of the tool bar2awith respect to the tool head1ain the third position or the five position.

Positions of the handle3aand the tool head1awith respect to the tool bar2aare adjusted by the first rotating structure and second rotating structure, so that the tool handle has following states:

In a first state, as shown inFIG.5, the tool head1ais switched to the third position, the handle is switched to the first position, a top end of the second positioning column53ais embedded into the third positioning groove511a, the handle3ais switched to the first position. A top end of the first positioning column43ais embedded into the first positioning groove411a. At this time, the handle3aand the tool head1aare located on different sides of the tool bar2a. The tool handle is of a Z-shaped structure. In the first state, an accessory may be installed on the tool head1a. For example, an inner hexagon sleeve is quickly installed on the tool head1a, and the inner hexagon sleeve is sleeved on a head of the bolt, so the operator is able to hold the handle and rotate the handle quickly to fix or disassemble the bolt, which improves a speed of installation and removal.

In a second state, as shown inFIG.9, the tool head1ais switched to the third position, the handle is switched to the second position, the top end of the second positioning column53ais embedded in the third positioning groove511a, the handle3ais switched to the second position, and the top end of the first positioning column43ais embedded in the second positioning groove412a. At this time, the tool handle is of an L-shaped structure. The handle3aand the tool bar2aare located on the same axis, and cooperate together to form an extended moment arm. In a beginning of installation and disassembly of the workpiece, the operator only needs to apply a small force to the handle to input the large torque. Of course, in the second state, the tool handle also reduces the force need to be applied during normal rotation.

In a third state, as shown inFIG.10, the tool head1ais switched to the fourth position, the top end of the second positioning column53ais embedded in the fourth positioning groove512a, the handle3ais switched to the second position, and the top end of first positioning column43ais embedded in the second positioning groove412a. At this time, the tool handle is of an I-shaped structure. In the third state, the tool head1a, the tool bar2a, and the handle3aare located on the same axis, so the tool handle is rotated quickly in scenes that require less torque and a small space, and is also convenient for storage.

In a fourth state, as shown inFIG.11, the tool head1ais switched to the fifth position, the top end of the second positioning column53ais embedded in the fifth position positioning groove513a, the handle3ais switched to the second position, and the first positioning column43ais embedded in the second position positioning groove412a. At this time, the tool handle is of an L-shaped structure. A usage scenario of the fourth state is the same as that of the second state. The operator is able to switch the tool handle between the second state and the fourth state, so the operator can maintain an original force direction to rotate the tool handle without frequently replacing force directions. The tool handle in the fourth state is also suitable for some situations where space is limited and a large range of 360° rotation cannot be performed.

In a fifth state, as shown inFIG.12, the tool head1ais switched to the fifth position, the top end of the second positioning column53ais embedded in the fifth positioning groove513a, the handle3ais switched to the first position, the top end of the first positioning column43ais embedded in the first positioning groove411a, the handle3aand the tool head1aare located on the same side of the tool bar2a, and the tool handle is of a U-shaped structure. When the tool handle is in the fifth state, the operator is able to install or disassemble the workpiece at a rear side of the workpiece, which is applicable to some special scenarios where there is no operating space on a front side of the workpiece.

As shown inFIGS.13and14, the present disclosure provides the tool handle with the handle that is rotatable. The tool handle comprises a tool head1b, a tool bar2b, and the handle3b. The handle3bis rotatably connected to a first end of the tool bar2athrough a first rotating structure4b. The tool head1bis rotatably connected to a second end of the tool bar2bthrough a second rotating structure5b.

In the embodiment, the tool bar2bis a square steel structure with an H-shaped cross section.

The first rotating structure4bis same as the first rotating structure4aof the embodiment 2, and an installation form thereof is also the same. The first connecting head41bis installed on the tool bar2b, and the second connecting head42bis installed on the handle3b. Compared with the first connecting head41, disposed on the handle3, of the first rotating structure in the embodiment 1 and the second connecting head42disposed on the tool bar2, when fingers of the operation move to the first rotating structure4b, the fingers are effectively prevented from being crushed.

The second rotating structure5bis completely the same as the second rotating structure5in the embodiment 1. The third connecting head51bis disposed on the tool head1, and the fourth connecting head52bis disposed on the tool bar2.

In the embodiment, working principles of the first rotating structure4band the second rotating structure5bcan be respectively referred to the first rotating structure4ain the embodiment 2 and the second rotating structure5in the embodiment 1. Then a position of the handle3bwith respect to the tool bar2bis adjusted through the first rotating structure4b, and a position of the tool head1bwith respect to the tool bar2bis adjusted through the second rotating structure5b, so that the tool handle is switched between a Z-shaped structure, an L-shaped structure, and an I-shaped structure.