KR20030034686A - a screw driver - Google Patents

Abstract

PURPOSE: A tightening tool is provided to continuously tighten and loosen a tightened object by installing a one-way clutch between a handle and a tightening member. CONSTITUTION: A handle(10) has an insertion hole therein. A rotation preventing groove(14) is formed at both sides of the insertion hole. One-way clutches(20) have a rotation preventing part(22A), and are fit into the rotation preventing groove. A tightening member(30) has a protrusion(32) in the middle part, and passes through the one-way clutch and is coupled with the handle. A coupling unit(34) is formed at one end of the tightening member.

Description

Fastening tool {a screw driver}

The present invention relates to a tightening tool, and more particularly, to a tightening tool having a one-way clutch to continuously tighten or loosen the tightening object.

In general, the tightening tool, in particular a screw driver is to tighten or loosen the screw, etc., as shown in Figure 1 consists of a handle (1) and a fastening member (2), tightening at one end of the fastening member (2) The blade portion combined with the object is formed in a "+" or "-" shape. At this time, the blade portion is introduced to a product formed in a shape other than the above shape.

However, the screw driver of this structure has the inconvenience of having to rotate the integrated handle (1) and the tightening member (2) at the same time to tighten or loosen the object such as screws.

That is, in order to tighten the screw, the blade must be screwed into the groove of the screw, and then the handle (1) is rotated to a rotatable angle. There was a discomfort that must be repeated. This was a problem that occurs because the handle 1 and the fastening member 2 are integrally formed as described above.

On the other hand, the screw driver according to the prior art is because the handle (1) is formed in the shape of a rod, it is not possible to transmit a large force by the user's grip force to loosen the tightened screw or tighten the screw with a large force It was difficult. Of course, even in this case, the screw could not be loosened or tightened continuously, and the blade must be detached from the screw to change direction and then recombined to tighten or loosen, that is, continuous tightening or loosening with the handle (1) attached. It was impossible.

The present invention has been invented to solve the problems of the prior art as described above, the technical problem of the present invention allows a rotation in one direction only between the handle and the tightening member of the tightening tool, such as a screwdriver or a screwdriver coupled to the socket wrench. To install a one-way clutch to provide a tightening tool that can continuously loosen or tighten the tightening object.

Another technical problem of the present invention is to provide a means for fastening or loosening continuously and quickly without using a separate tool when continuously tightening or loosening a tightening object with a large force with a tightening tool.

1 is a perspective view showing a tightening tool according to the prior art.

Figure 2 is an exploded perspective view showing a tightening tool according to the present invention.

Figure 3 is a perspective view of the coupling state of the tightening tool according to the present invention.

4 is a cross-sectional view of the coupling state of the tightening tool according to the present invention.

5 is a cross-sectional view taken along the line AA ′ of FIG. 4.

Figure 6a, 6b is a cross-sectional view showing a state of use of the tightening tool according to the present invention, 6a is a cross-sectional view showing a tightening object using a tightening tool, 6b is a loosening the object tightened using the tightening tool. Section showing the state.

Figure 7a, 7b is a view showing another embodiment of the coupling portion according to the present invention, 7a is a perspective view showing a socket wrench, 7b is a perspective view showing a polygonal wrench.

8 is a partially enlarged cross-sectional view showing another embodiment of the tightening tool according to the present invention.

9 is a perspective view showing a state of use of the tightening tool shown in FIG.

Figure 10a, 10b is a view showing a tightening tool according to another embodiment of the present invention, 10a is a coupling state forward sectional view, 10b is an operating state plan sectional view.

<Description of the symbols for the main parts of the drawings>

10: handle 12: insertion hole

14: anti-rotation groove 20: one-way clutch

22: housing 22A: anti-rotation part

24: narrow part 25: expansion part

26: jam jaw 27: mounting groove

28: jamming protrusion 29: roller

30: handle 32: hook end

34: coupling portion 36: screw groove

40: socket wrench 50: cap for separation

52: screw projection

The present invention for solving the technical problem of the present invention as described above, the insertion hole is formed through the inside, the inner side of the insertion hole in each of the handle is formed an angled anti-rotation groove; Each one-way clutch is configured to allow rotation in only one direction, the anti-rotation portion is formed on the outer circumferential surface of the housing is fitted to each of the anti-rotation groove; A locking end is formed in the middle portion, and a coupling part is formed at one end so as to be coupled to an object to be tightened, and the other end is formed in a circular cross section, and the fastening member is configured to be coupled to the handle through the respective one-way clutches. Provide tools.

At this time, the fastening member is characterized in that the screw driver.

In addition, the coupling portion is characterized in that the socket wrench is coupled.

The other end surface of the tightening member is formed with a screw groove, characterized in that the screw cap is coupled to the separation preventing protrusion protruding coupling screw projection.

The handle has a through hole angled in a direction perpendicular to the insertion hole is biased to one side, characterized in that the through hole is provided with a one-way clutch.

The one-way clutch includes a plurality of installation grooves each having a narrow portion and an enlarged portion on an inner circumferential surface of the housing, and engaging jaws formed on upper and lower portions, respectively; Each of the installation grooves is inserted into each of the engaging projections are formed on both ends of the engaging projection is characterized in that consisting of a plurality of rollers installed to move from the expansion portion to the narrow portion by the spring in each installation groove.

On the other hand, the tightening tool according to another embodiment of the present invention is a handle formed with a fastening insertion groove and a release insertion groove on both sides therein; A narrow portion and an enlarged portion are formed on an inner circumferential surface of the housing, and a plurality of installation grooves each having radially upper and lower locking jaws are inserted into each of the installation grooves, and each of the mounting grooves is inserted into each of the mounting grooves. It is provided with a plurality of rollers installed to move from the expansion part to the narrow part by the spring inside the groove and is configured to allow rotation in only one direction so that the inside of the tightening insertion groove and the release insertion groove for restricting rotation in opposite directions A plurality of one-way clutches inserted into and installed in different directions, respectively; A fastening part having different shapes is formed at both ends, respectively, and is characterized in that it comprises a fastening member selectively coupled to the fastening insertion groove and the unwinding insertion groove each of which the one-way clutch is installed.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention having the above characteristics as follows.

2 is an exploded perspective view showing a tightening tool according to the present invention, Figure 3 is a perspective view of the coupling state of the tightening tool according to the present invention, Figure 4 is a cross-sectional view of the coupling state of the tightening tool according to the present invention. 5 is a cross-sectional view taken along the line AA ′ of FIG. 4.

2 to 5 in the accompanying drawings, the tightening tool according to the present invention is coupled to the plurality of one-way clutch 20 to allow rotation in one direction only between the handle 10 and the tightening member 30, respectively Has been configured.

This will be described in more detail as follows.

The handle 10 has a plurality of protrusions or grooves formed on the outer circumferential surface thereof, and has a structure in which the insertion hole 12 penetrates in the longitudinal direction, and both sides of the insertion hole 12 are angular, that is, rotation of a polygon. The prevention groove 14 is formed.

In other words, both sides of the insertion hole 12 of the handle 10 are formed to extend in a polygonal shape to prevent the rotation groove 14. The one-way clutch 20 is coupled to the rotation preventing groove 14 so as not to rotate.

The one-way clutch 20 has a rotation preventing portion 22A formed to be angulated so as to fit into the rotation preventing groove 14 on the outer circumferential surface of the cylindrical housing 22. At this time, in the present embodiment, the anti-rotation groove 14 and the anti-rotation portion 22A are configured in a polygonal shape, but the present invention is not limited thereto, and various embodiments are possible. For example, the housing 22 and the handle 10 may be joined by a spline.

One-way clutch 20 as described above has an internal structure that allows rotation in only one direction.

That is, as shown in FIG. 5, a plurality of installation grooves 27 having a narrow portion 24 and an extension portion 25 are radially formed on the inner circumferential surface of the housing 22. The installation groove 27 is formed in the longitudinal direction in the housing 22, the upper and lower locking jaw 26 is formed respectively. The installation grooves 27 are provided with rollers 29 having protrusions 28 protruding from both ends thereof, and on the extension portion 25 side, the rollers 29 have elasticity for always moving the rollers 29 toward the narrow portion 24. One spring is installed.

Accordingly, when the rollers 29 are installed in the installation grooves 27, the rollers 29 may move from the narrowing part 24 to the narrowing part 24 or the narrowing part 25. For example, in the initial state in which the fastening member 30 is not coupled, the rollers 29 are moved to the narrow portion 24 by the elasticity of the spring, and in this state, the fastening member 30 is engaged. When the rollers 29 are in contact with the outer circumferential surface thereof to start rotation in the tightening direction, the rollers 29 are moved toward the extension portion 25 while overcoming the elasticity of the springs. The elasticity of the contact with the tightening member 30 is to be moved to the narrower portion 24 side again.

At this time, the rollers 29 are moved to the narrow portion 24 in the state in which the locking protrusions 28 are caught by the locking jaw 26 and the separation of the rollers 29 is prevented. When protruding toward the inner center side of the housing 22 and moving toward the extension part 25, the housing 22 is moved away from the center side of the housing 22.

In other words, when the rollers 29 are moved toward the narrow portion 24, the rollers 29 prevent the rotation while pressing the tightening member 30, and when the rollers 29 move to the extension portion 25, the rotations are allowed. will be.

Such a one-way clutch 20 is configured as described above in this embodiment, but is not limited thereto, and a clutch or one-way bearing that can only allow rotation in one direction may be used.

The fastening member 30 has a predetermined length, and the coupling portion 34 is formed at one end to be coupled to the object to be tightened, and an annular locking end 32 is formed at the middle portion of the locking end 32. The other end thereafter has a circular cross section. The locking end 32 is to prevent the fastening member 30 is no longer inserted into the handle 10 when the handle 10 is coupled, and to prevent the one-way clutch 20 from being separated. will be.

In this embodiment, the engaging portion 34 of the tightening member 30 has a shape of "+" or "-" to tighten or loosen the screw.

In addition, the other end of the fastening member 30 is formed in a cylindrical shape so that each roller 29 of the one-way clutch 20 can be contacted.

At this time, the screw groove 36 is formed on the other end surface of the fastening member 30, and the screw protrusion 52 of the cap 50 for preventing the release is fastened to the screw groove 36, and the cap for preventing the release ( 50 prevents the handle 10 and the one-way clutch 20 from being separated when the tightening member 30 and the handle 10 are coupled to each other.

The fastening members 30 formed as described above may be selected and coupled to both sides of the handle 10, respectively.

Referring to the operation of the present invention configured as described above in detail based on the accompanying drawings as follows.

Figure 6a, 6b is a cross-sectional view showing a state of use of the tightening tool according to the present invention, 6a is a cross-sectional view showing a tightening object using a tightening tool, 6b using a tightening tool It is sectional drawing which shows the state which loosened the clamped object.

In the accompanying drawings, in order to tighten and tighten the object to be tightened with the tightening tool according to the present invention as shown in FIG. 6A, the one-way clutch 20 is coupled to both ends of the insertion hole 12 and the tightening member ( 30 is coupled, but the handle 10 is coupled to the fastening member 30 such that the narrow portion 24 of the one-way clutch 20 is located in the opposite direction of rotation (the direction opposite to the arrow in FIG. 6A).

That is, when the handle 10 is coupled to the other end of the tightening member 30, the tightening of the handle 10 by the one-way clutch 20 to rotate only in the unwinding direction without rotating in the tightening direction The handle 10 is coupled to the other end of the member 30.

In such a state, the screw protrusion 52 of the cap 50 for detachment is fastened to the screw groove 36 so that the cap 50 for detachment is coupled to the other end of the fastening member 30. As such, when the detachment preventing cap 50 is coupled to the other end of the tightening member 30, the handle 10 is prevented from being separated from the tightening member 30.

When the separation prevention cap 50 is coupled, the coupling portion 34 is coupled to the tightening object and rotates the handle 10 in the tightening direction.

In this case, when the handle 10 is rotated in the tightening direction, the tightening member 30 and the handle 10 may be integrated by the one-way clutch 20 to tighten the tightening object, which is the one-way clutch 20. Each roller 29 of the is moved from the expansion portion 25 side to the narrow portion 24 side is pinched on the outer circumferential surface of the tightening member 30 and the inner surface of the narrow portion 24 side of the mounting groove 27 and the rotation is stopped. Due to this, the tightening member 30 and the handle 10 are integrated to enable tightening.

In this state, in order to continuously tighten the tightening object, the handle 10 rotated in the tightening direction is rotated in the release direction.

When the knob 10 is rotated in the release direction as described above, the tightening member 30 is maintained without being rotated, but the knob 10 is rotated in the release direction without difficulty. This is because the rollers 10, which were pinched on the outer circumferential surface of the tightening member 30 and the inner surface of the narrow portion 24 side when the handle 10 is rotated in the release direction, move to the extension portion 25, and the handle 10 Because it allows the rotation of.

In this state, when the handle 10 is rotated in the tightening direction again, the rollers 29 of the one-way clutch 20 are caught by the narrow part 24 and the outer circumferential surface of the tightening member 30 again and stop the rotation. By stopping the rotation of the 10, the handle 10 and the tightening member 30 are integrated so that the tightening object can be tightened.

As such, the handle 10 is coupled to the tightening member 30 so that the handle 10 rotates only in the disengaging direction, and the operator simply rotates the handle 10 in the tightening direction and the disengaging direction within a predetermined rotation range. 30 is continuously rotated in the tightening direction to tighten the tightening object.

It is configured such that each roller 29 of the one-way clutch 20 moves along a surface inclined from the narrow portion 24 side to the enlarged portion 25 side, and in this state, each roller 29 is the narrow portion ( When moving to 24) is sandwiched between the outer peripheral surface of the tightening member 30 and the inner surface of the narrow portion 24 side to stop the rotation of the tightening member 30 or the handle 10, each roller 29 is expanded portion Moving to (25) is to be enabled by allowing the rotation of the tightening member 30 or the handle (10).

On the other hand, in order to loosen the tightened object to tighten the handle 10 is rotated in the tightening direction in the state coupled with the tightening member 30, tightening the cap for preventing separation 50 so as not to rotate in the unwinding direction Separate from (30), and change the coupling direction of the handle 10 is coupled. Combine in the opposite direction to the initial coupling direction and again to combine the separation preventing cap 50.

In this state, as shown in FIG. 6B, the handle 10 is repeatedly rotated in a tightening direction and a releasing direction within a predetermined range.

As described above, the tightening member 30 can be rotated in one direction (rotation direction) just by repeatedly rotating the handle 10 within a predetermined rotation range so that the tightening object can be continuously released.

At this time, the action of the one-way clutch 20 is as described above.

In the process of loosening and tightening the tightening object as described above, the handle 10 is not separated from the tightening member 30 by the locking end 32 and the cap for preventing separation.

On the other hand, even when the coupling portion 34 is a socket wrench 40 as shown in Figure 7 the operation of the handle 10 is the same. That is, the bolt or nut can be continuously loosened or tightened simply by repeatedly rotating the handle 10 within a certain rotation range after coupling the socket wrench 40 to the bolt or nut.

8 is a partially enlarged cross-sectional view showing another embodiment of the tightening tool according to the present invention, Figure 9 is a perspective view showing a state of use of the tightening tool shown in FIG.

Another embodiment of the handle according to the present invention will be described.

8 and 9 in the accompanying drawings, the tightening tool according to another embodiment has a through hole 16 formed in a direction perpendicular to the insertion hole 12 in the handle 10, the through hole ( 16 has a structure in which the one-way clutch 20 is installed. At this time, the through hole 16 is formed to be angled in a polygonal shape, the outer peripheral surface of the housing 22 of the one-way clutch 20 is also formed in a polygon to be installed in the through hole 16. At this time, the one-way clutch 20 is installed on both sides of the through hole 16, respectively.

In addition, the through hole 16 is formed to be biased toward one side of the handle (10).

This tightening tool is used to tighten or loosen the tightening object with great force.

That is, when the other end of the tightening member 30 is inserted into the through hole 16 and then coupled, the handle 10 is repeatedly rotated in the tightening direction and the unwinding direction within a predetermined range. Tightening object coupled to 34) can be loosened or tightened continuously.

At this time, since the central axis of the tightening member 30 is located on one side of the handle 10, the tightening object is continuously tightened with a small force in proportion to the central axis and the end distance of the handle 10, or It will be solved.

Thus, the user does not have to use a separate tool for tightening or loosening the tightening object with a large force.

On the other hand, as shown in Figure 7b when the coupling portion 34 is formed of a polygonal wrench 60, it is possible to easily tighten or loosen the bolt or the like formed with a polygonal wrench groove.

In addition, although not shown in the drawings, the middle portion of the fastening member 30 may be separated, and may be used in combination with various fasteners using a connection member.

10A and 10B show another embodiment of a tightening tool according to the present invention.

As shown in FIG. 10A, the tightening tool according to another embodiment has a handle 10 having a fastening insertion groove 13A and an unwinding insertion groove 13B respectively having anti-rotation grooves 14 at both sides thereof. ) And a narrow portion 24 and an enlarged portion 25 are formed on an inner circumferential surface of the housing 22 in which the anti-rotation portion 22A is formed so as to be fitted into the anti-rotation groove 14, and the upper and lower portions of the upper and lower portions are locked. Each of the installation grooves 27 formed radially in each of the plurality of installation grooves 27 and the installation grooves 28, and locking projections 28 are formed on both end surfaces of the locking projections 27. 27) is provided with a plurality of rollers 29 installed to move from the narrow portion 24 to the expansion portion 25 by a spring therein and configured to allow rotation in only one direction so as to restrict rotation in opposite directions. The fastening insertion groove 13A and the release insertion groove 13B are respectively inserted in different directions. A plurality of one-way clutch 20 and a fastening portion 35 having different shapes are formed at both ends, respectively, so that each of the one-way clutch 20 is provided with a fastening insertion groove 13A and an unwinding insertion groove 13B. Consists of a tightening member 30 is selectively coupled to. At this time, the one-way clutch 20 is coupled to allow the rotation in different directions on each inlet side or inside of each of the insertion groove (13A, 13B).

At this time, the operation structure of the one-way clutch 20 is the same as described above.

Tightening tool according to another embodiment configured as described above is formed with a fastening insertion groove (13A) and a release insertion groove (13B) opening on both sides in the handle (10), respectively in the respective insertion grooves (13A, 13B) The one-way clutch 20 is installed in different directions, respectively, and the tightening part 35 of the tightening member 30 is selectively coupled to each of the insertion grooves 13A and 13B in which the one-way clutch 20 is installed, respectively. Therefore, the user can easily select and use the tightening part 35 of the "+" shape or the "-" shape.

That is, in order to tighten the object to be tightened using the tightening part 35 of the "-" type, the tightening part 35 of the "+" type is inserted into the tightening insertion groove 13A as shown in FIG. In order to loosen the tightening object in the state, the "+" type tightening part 35 is inserted into the unlocking insertion groove 13B to rotate the handle 10 in the direction of the arrow shown in FIG. 10B to loosen the tightening object. At this time, the tightening member 30 is rotated only in one direction by the action of the one-way clutch 20 as described above will be able to tighten or loosen the tightening object.

Tightening tool according to the present invention is to install a one-way clutch that allows rotation in one direction only between the tightening member and the handle, according to the present invention the one-way clutch allows the rotation of the handle or the tightening member in one direction only tightening objects In addition to being able to tighten or loosen continuously, according to the tightening tool according to another embodiment, the tightening object can be coupled to the tightening member in a "┍" shape or a "┬" shape without using a separate tool. Strong and continuous tightening or loosening with small force is possible, and in another embodiment, the effect of continuous tightening or loosening is provided by selectively using "+" type fastening and "-" type fastening.

Claims (8)

An insertion hole 12 formed therein, and a handle 10 having an angled anti-rotation groove 14 formed on both sides of the insertion hole 12; Each one-way clutch 20 is configured to allow rotation in only one direction, and the anti-rotation portion 22A is formed on the outer circumferential surface of the housing 22 to be fitted into each of the anti-rotation grooves 14; A locking end 32 is formed in the middle portion, and an engaging portion 34 is formed at one end so as to be coupled to an object to be tightened, and the other end is formed in a circular cross section so as to penetrate the respective one-way clutches 20 and the handle 10. Fastening member 30 coupled to); Fastening tool, characterized in that consisting of. The tightening tool according to claim 1, wherein the tightening member is a screw driver. The tightening tool according to claim 1, wherein the coupling part is coupled to a socket wrench. The tightening tool according to claim 1, wherein the coupling part is formed with a polygonal wrench. According to any one of claims 1 to 3, the other end surface of the fastening member 30 is formed with a screw groove 36, the screw groove 36 for the separation preventing protrusion of the coupling screw protrusion 52 is formed Tightening tool, characterized in that the cap 50 is coupled. The method of claim 1, wherein the handle 10 is formed with a through-hole 16 angled in a direction perpendicular to the insertion hole 12 to one side, the one-way clutch 20 on both sides of the through-hole 16 Tightening tool, characterized in that each is installed. According to claim 1 or 6, The one-way clutch 20 has a narrow portion 24 and the expansion portion 25 on the inner circumferential surface of the housing 22, the engaging jaw 26 is formed on both sides, respectively A plurality of installation grooves 27; Engaging projections 28 are inserted into each of the installation grooves 28 and both end surfaces are formed with projections 28 to be caught by the locking projections 27. A plurality of rollers 29 installed to move to 25; Fastening tool, characterized in that consisting of. Tightening insertion grooves 13A and release insertion grooves 13B are formed at both sides therein, and the anti-rotation grooves 14 are formed in the insertion insertion grooves 13A and the release insertion grooves 13B, respectively. 10; A narrow portion 24 and an enlarged portion 25 are formed on an inner circumferential surface of the housing 22 in which the anti-rotation portion 22A is formed to fit into the anti-rotation groove 14, and the upper and lower locking jaws 26 are formed. A plurality of installation grooves 27 formed in a radial shape, each of the installation grooves 28 are inserted into each of the engaging projections 28 is formed on both ends of the engaging projection 27 is formed in each of the installation grooves 27 The fastening insert is configured to allow rotation in one direction only by having a plurality of rollers 29 installed to move from the narrow portion 24 to the extension portion 25 by a spring at the opposite direction. A plurality of one-way clutches 20 inserted and installed in different directions in the grooves 13A and the insertion grooves 13B for loosening, respectively; Tightening member 30 is formed on both ends of the fastening member (35) is selectively coupled to the fastening insertion groove (13A) and the release insertion groove (13B) for each one-way clutch 20 is installed; Fastening tool, characterized in that consisting of.