KR102436745B1 - An electric tool with a rotary hook - Google Patents

Abstract

The present invention relates to a power tool having a hook for hanging the power tool on a worker's belt or tool box, and in particular, by changing the angle at which the power tool is hung to various angles according to the individual work characteristics of the worker or the structure of the tool box, etc. It is designed to be hangable.
A power tool having a rotary hook according to the present invention for achieving the above object includes a fastening part formed on the body of the power tool, and a mounting part formed on the hook, and as the mounting part is inserted into the fastening part and locked, the hook is It is fixed to the power tool, and as the lock is released, the hook is separated from the power tool, and the mounting part is lockable by changing the angle fastened to the fastening part.

Description

An electric tool with a rotary hook

The present invention relates to a power tool having a hook for hanging the power tool on a worker's belt or tool box, and in particular, by changing the angle at which the power tool is hung to various angles according to the individual work characteristics of the worker or the structure of the tool box, etc. It is designed to be hangable.

In general, various power tools used in homes or factories have been disclosed, and recently, portable power tools have been widely used.

Among portable power tools, power tools that supply electric power by connecting electric wires have the advantage that they can be used for a long time because there is no power supply limitation.

In order to compensate for the above disadvantages, a power tool using a rechargeable battery has recently been used.

1 is a perspective view illustrating a structure in which a waist ring of a conventional power tool is separated.

As shown in Figure 1, the conventional power tool includes a screwdriver socket fixing part 1, a body part 2 with a built-in driving motor, and a handle part 3 for a user to grip the body part 2 and , and a battery pack 4 for supplying power to the driving motor for driving the driving motor.

The body part 2 has a certain space therein to accommodate various parts including the driving part so that the driver socket fixing part 1 is rotationally driven, and its external shape including the handle part 3 has a gun shape. is formed

On one side of the lower part of the handle part 3 to which the battery pack 4 is coupled, a separate waist ring 5 is fixedly coupled to the side of the lower part of the handle part 3 to allow the power tool to be hung on the worker's waist during the rest period in the middle of the work using the power tool. has been

A fastening hole (5a) capable of fixing and coupling the waist ring (5) is formed through one side of the lower portion of the handle (3), and the waist ring (5) has a separate fastening bolt (7) fastening hole (5a) ) is fixedly coupled to one side of the handle part (3) by being fastened to it.

The handle part 3 is a part that enables the operator to grasp the power tool by hand and perform electric work, and is formed to extend from one end of the body part 2 downward to a certain length.

And a battery pack 4 is provided at the end of the handle part 3, and the battery pack 4 generates a voltage and current capable of driving the driving motor according to the capacity of the driving motor included in the driving part, , a working time that can be operated by driving the driving motor of the power tool is determined according to the capacity of the battery pack 4 .

However, in such a conventional power tool, since the waist ring 5 is provided in a fixedly coupled form to one side of the lower portion of the handle 3, the arrangement direction is fixed at the time of work using the power tool. ), which not only causes inconvenience to work, but also has a problem in that the utilization of the waist ring 5 is reduced because the waist ring 5 simply serves to fix the power tool to the worker's waist.

In order to solve this problem, the power tool described in Korean Patent Application Laid-Open No. 10-2018-0032743 is configured as follows.

In the drawings, Figure 2a is a perspective view of a power tool according to the prior art, Figure 2b is a conceptual diagram showing the relationship of rotating the waist ring.

As shown in Figures 2a and 2b, the electric motor is coupled to the lower surface of the body portion 10, the handle portion 20 extending a predetermined length from one side of the body portion 10, and the handle portion (20). It includes a battery unit 30 and a waist ring 40 provided on one side of the handle unit 20 and used to fix the body unit 10 to the worker's waist.

And on one side of the handle portion 20, a fastening hole 21 having a thread formed on the inner surface to fix the waist ring 40 is formed through, and the waist ring 40 is a fastening bolt fastened to the fastening hole 21. (22) is rotatably coupled to one side of the handle portion 20, the waist ring 40 can be maintained in a state arranged in parallel with the handle portion 20 or disposed perpendicular to the handle portion (20). It includes a state maintaining unit 50 to allow.

In the conventional power tool shown in FIGS. 2A and 2B, when you want to change the angle of the waist ring 40, the fastening bolt 22 is dismantled, and the dismantled waist ring 40 is set at a desired angle (in units of 90 degrees). It is inconvenient to rotate and fasten the fastening bolt 22 again.

That is, as the waist ring 40 and the fastening bolt 22 are separated, if the fastening bolt 22 is lost or absent, the waist ring 40 cannot be mounted, and the fastening bolt 22 is fastened or dismantled. (22) is inconvenient to rotate by hand.

Republic of Korea Patent Publication No. 10-2018-0032743 (published on April 2, 2018) Japanese Patent Application Laid-Open No. 2003-245876 (published on September 2, 2003) US Patent Publication US 7681661 B2 (2010.03.23.)

The present invention was invented to solve the problems of the prior art as described above. In addition to the detachable configuration of the hook on the power tool, the number of divided components in the configuration to be able to change the angle of the hook is reduced and lost It is an object of the present invention to provide a power tool that can prevent the back and can easily change the angle and detachment of the hook.

A power tool having a rotary hook according to the present invention for achieving the above object includes a fastening part formed on the body of the power tool, and a mounting part formed on the hook, and as the mounting part is inserted into the fastening part and locked, the hook is It is fixed to the power tool, and as the lock is released, the hook is separated from the power tool, and the mounting part is lockable by changing the angle fastened to the fastening part.

In addition, according to a preferred embodiment of the present invention, lock grooves are formed at an angle on the outer peripheral surface of the mounting portion.

In addition, according to a preferred embodiment of the present invention, an insertion groove into which the mounting part is inserted is formed in the fastening portion, and on the outer peripheral surface of the insertion groove, the protruding grooves are formed to correspond to the locking groove, and the protrusion is located in the protrusion to form the insertion groove. A spring is positioned inside the protrusion groove to provide an elastic force so that the protrusion moves inward of the insertion groove, which advances inward or moves backward in the protrusion groove.

In addition, according to a preferred embodiment of the present invention, a rotating part rotating along the outer circumferential surface of the fastening part is positioned, and the wire connected to the protrusion located in the insertion groove is fixed to the inner circumferential surface of the rotating part, and the protrusion moves in the front-rear direction according to the rotation of the rotating part. and lock or unlock.

Further, according to a preferred embodiment of the present invention, four or more insertion grooves, protrusion grooves, and projections are formed at an angle to the fastening portion, and four or more lock grooves are formed at an angle to the mounting portion.

As described above, in the power tool according to the present invention, as the fastening part formed on the body and the mounting part formed on the hook are locked or unlocked, the hook can be detached or mounted, and the angle can be adjusted. Accordingly, there is an advantage in that detachment and angle adjustment of the hook are easier because a configuration such as a separate bolt for mounting the hook to the power tool is not required as in the prior art.

1 is a perspective view illustrating a structure in which a waist ring of a conventional power tool is separated.
Figure 2a is a perspective view of a power tool according to the prior art,
Figure 2b is a conceptual diagram showing the relationship of rotating the waist ring.
3 is a perspective view showing a power tool having a rotary hook according to the present invention,
4 is a cross-sectional view showing a fastening part in a state in which the rotary hook shown in FIG. 3 is separated;
5 is a cross-sectional view showing a state in which the rotary hook shown in FIG. 4 is fastened to the fastening part;
FIG. 6 is a cross-sectional view illustrating the operation relationship of the protrusions when the rotating part of the fastening part shown in FIG. 3 is rotated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a power tool having a rotary hook according to the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, FIG. 3 is a perspective view showing a power tool having a rotary hook according to the present invention, FIG. 4 is a cross-sectional view showing a fastening part in a state in which the rotary hook shown in FIG. 3 is separated, and FIG. 5 is shown in FIG. It is a cross-sectional view showing a state in which the rotary hook is fastened to the fastening part, and FIG. 6 is a cross-sectional view showing the working relationship of the protrusions when the rotating part of the fastening part shown in FIG. 3 is rotated.

As shown in FIG. 3 , a fastening part 110 for mounting the hook 130 is formed at the lower end of the handle 101 of the power tool 100 , and the fastening part 110 is attached to the end of the hook 130 . A detachable mounting portion 131 is formed.

When the mounting part 131 is inserted into the fastening part 110, the hook 130 is fixed, and when the rotating part 111 of the fastening part 110 is rotated, the lock of the mounting part 131 is released and the fastening part 110. The mounting part 131 can be withdrawn from the , and the mounting part 131 can be rotatably mounted in units of 90 degrees. Here, the unit of 90 degrees is only an example for describing the technology of the present invention, and is not limited to the angle of 90 degrees.

Hereinafter, the structure of the fastening part and the mounting part configured as described above will be described in detail.

3 to 6 , the mounting part 131 of the hook 130 has a cylindrical structure, and a locking groove 133 is formed on the outer peripheral surface at an angle of 90 degrees. Here, the thickness forming the inner diameter and the outer diameter of the cylinder is formed to be equal to or smaller than the width of the insertion groove 113 of the fastening part 110 to be described below.

And an insertion groove 113 is formed in the fastening part 110 formed at the lower end of the handle of the power tool 100 , and the mounting part 131 is inserted into the insertion groove 113 . The fastening part 110 has a cylindrical structure and an insertion groove 113 is formed in its cross section, and the mounting part 131 of the hook 130 is inserted into the insertion groove 113 as shown in FIGS. 3 and 5 .

On the other hand, as shown in FIGS. 4 and 5 , four protrusions 117 are formed on the outer circumferential surface of the insertion groove 113 , and the four protrusions 117 are a mounting part 131 inserted into the insertion groove 113 . It is pushed into the inside of the protrusion groove 115 where the protrusion 117 is located. As the protrusion 117 enters the inside of the protrusion groove 115 , the mounting part 131 may enter to the inside position of the insertion groove 113 , and in this case, the protrusion 117 is on the outer circumferential surface of the mounting part 131 . Facing the formed locking groove 133, the instantaneous projection 117 moves to the outside of the projection groove 115 by the elastic force of the coil spring 119 built in from the inside of the projection groove 115, while the locking groove 133. is matched to

At this time, if the protrusion 117 and the locking groove 133 do not correspond to each other in a state in which the mounting part 131 is inserted to the proper position of the insertion groove 113, the locking groove 133 is formed by rotating the hook 130 ( 117) and corresponding instantaneous projections 117 are matched to the locking grooves 133, so that the hook 130 is locked to the power tool.

On the other hand, the fastening part 110 is formed with a rotating part 111 rotatable in the circumferential direction on its outer peripheral surface, and the inner peripheral surface of the rotating part 111 closes the outer end of the protrusion groove 115 formed in the fastening part 110 .

Therefore, even if the coil spring 119 is positioned inside the protrusion groove 115 , it interferes with the rotating part 111 so that the coil spring 119 does not deviate to the outside of the protrusion groove 115 .

On the other hand, a fixing piece 121 is attached and fixed to the end of the protrusion 117 by an adhesive or the like, and a wire 123 passes through the center of the coil spring 119 to the fixing piece 121 and is fixed to the rotating part 111 . . Therefore, the protrusion 117 has a limited range of movement by the length of the wire 123 fixed to the rotating part 111 even when the coil spring 119 is extended to the maximum, so that the protrusion 117 cannot escape from the protrusion groove 115, The coil spring 119 is contracted and reciprocated in a straight direction along the protrusion groove 115 .

On the other hand, as shown in (a) and (b) of Figure 6, the wire 123 is fixed to the rotating unit 111, the rotating unit 111 is rotated closer to or away from the projection 117.

As shown in (a) of FIG. 6 , when the point at which the wire 123 is fixed to the rotating part 111 is close to the protrusion 117, the protrusion 117 is inserted into the insertion groove 113 by the elastic force of the coil spring 119. will move inward. At this time, as shown in FIG. 5 , the protrusion 117 is inserted into the locking groove 133 of the mounting part 131 , that is, the locking state.

On the other hand, as shown in FIG. 6(b), when the point at which the wire 123 is fixed to the rotating part 111 moves away from the protrusion 117, the protrusion 117 compresses and contracts the coil spring 119 and protrudes. It moves in the inner direction of the groove 115 . When the projection 117 completely enters the inside of the projection groove 115 and does not protrude from the outer peripheral surface of the insertion groove 113 at all, the mounting part 131 inserted into the insertion groove 113 in the unlocked state is inserted into the insertion groove ( 113) can be withdrawn.

As such, when the mounting part 131 of the hook 130 is inserted and locked into the insertion groove 113 of the fastening part 110 formed at the lower end of the handle 101 of the power tool 100, the mounting part 131, that is, the hook 130. is fixed without being rotated or drawn out of the insertion groove 113.

In this state, as shown in FIG. 6(b), when the rotating part 111 of the fastening part 110 is rotated to completely enter the protrusion 117 inside the protrusion groove 115, the mounting part ( 131) can be withdrawn.

Therefore, when the operator mounts the hook 130 on the power tool 100, considering the locking of the protrusion 117 and the locking groove 133, the operator rotates the angle of the hook 130 by 90 degrees to install and lock it. In the case of changing the angle of the hook 130 , the lock is released by rotating the rotating part 111 , and the hook angle is changed to be mounted on the fastening part 110 again.

In the power tool 100 configured as described above, the number of the protrusions 117 formed in the insertion groove 113 and the number of the lock grooves 133 formed in the mounting part 131 are increased to make the angle smaller than 90 degrees. In this case, the angle of the hook 130 can be adjusted by the subdivided angle.

100: power tool
101: handle
110: fastening part
111: rotating part
113: insertion groove
115: protrusion groove
117: turn
119: coil spring
121: fixed piece
123: wire
130: hook
131: mounting part
133: lock groove

Claims (5)

delete delete As a power tool,
a fastening part formed on the body of the power tool;
It includes a mounting portion formed on the hook,
As the mounting part is inserted into the fastening part and locked, the hook is fixed to the power tool, and as the lock is released, the hook is separated from the power tool, and the mounting part can be locked by changing the angle fastened to the fastening part,
Lock grooves are formed at an angle on the outer peripheral surface of the mounting part,
An insertion groove into which the mounting part is inserted is formed in the fastening part, and protrusion grooves are formed on the outer circumferential surface of the insertion groove to correspond to the locking groove, and the projection is located in the projection groove to advance inward of the insertion groove or backward to the inside of the projection groove. , A power tool having a rotary hook, characterized in that a spring is positioned inside the protrusion groove to provide an elastic force so that the protrusion moves in the inward direction of the insertion groove.
4. The method of claim 3,
A rotating hook that rotates along the outer circumferential surface of the fastening part is located, and the wire connected to the protrusion located in the insertion groove is fixed to the inner circumferential surface of the rotating part, and the protrusion moves in the front-rear direction according to the rotation of the rotating part and locks or unlocks. Power tools equipped with
4. The method of claim 3,
A power tool having a rotary hook, characterized in that at least four insertion grooves, protrusion grooves, and projections are formed at an angle to the fastening portion, and at least four lock grooves are formed at an angle to the mounting portion.

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