KR20220108481A - Combination wrench - Google Patents

Abstract

A disclosed combination wrench that allows an operator to arbitrarily adjust the angle of the opening side of an open-end spanner to tighten or loosen bolts and nuts comprises: an arm that can be gripped by an operator; a box end spanner integrally formed on one end of the arm; a locking and unlocking means formed at the other end of the arm; and an open-end spanner rotatably mounted on the locking and unlocking means so that an angle of an opening is adjusted, wherein the locking and unlocking means includes: a chamber rotatably supporting the open-end spanner to adjust the angle; a clamp disposed inside the chamber and regulating rotation of the open-end spanner while linearly reciprocating along the longitudinal direction of the chamber; and an operating lever disposed inside the chamber and operating the clamp so that the clamp can regulate rotation of the open-end spanner.

Description

Combination Wrench {COMBINATION WRENCH}

The present invention (Disclosure) relates to a combination wrench, and more particularly, to a combination wrench that can be used by an operator by arbitrarily adjusting the angle of an open-end spanner.

Herein, background information related to the present invention is provided, which does not necessarily imply prior art (This section provides background information related to the present disclosure which is not necessarily prior art).

In general, as maintenance technology develops, tools used are also being automated, subdivided, and specialized.

However, in the aviation maintenance field, since there are many maintenance work that involves repeatedly attaching and detaching parts mainly for non-ferrous metals, a hand tool that the operator can directly feel and control the force is preferred rather than a power tool or an air tool.

A typical example of the aforementioned hand tool is a combination wrench for tightening or loosening a bolt or nut.

Combination wrench is composed of an arm, an open end spanner (open end wrench) formed at one end and the other end of the arm, and a box end spanner (box end wrench), as anyone can know.

Here, there are also combination wrenches provided by adding a ratchet function to the box-end spanner.

On the other hand, in the case of a combination wrench widely used in the field of aviation maintenance, the opening of the open-end spanner, that is, the opening into which the head of the bolt or the nut is inserted, is provided with an inclination of approximately 15 degrees or 60 degrees with respect to the longitudinal direction of the arm.

However, in the field of aviation maintenance, the space for using the combination wrench is narrow and the rotation of the combination wrench is interfered with by the surrounding parts. .

That is, the head of the bolt or the nut can be inserted into the opening side, but the arm cannot be rotated due to the narrow space and peripheral parts.

Korean Utility Model Publication No. 20-0486379. Korean Utility Model Publication No. 20-2014-0002905.

An object of the present invention (Disclosure) is to provide a combination wrench that allows the operator to arbitrarily adjust the angle of the opening side of the open-end spanner to tighten or loosen bolts and nuts.

Herein, a general summary of the present invention is provided, which should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problems, a combination wrench according to any one aspect of the various aspects describing the present invention includes an arm that an operator can hold; a box-end spanner integrally formed with one end of the arm; Gwaehaejeong means formed on the other end of the arm; and an open-end spanner that is rotatably mounted to the gwaehaejeong means so that the angle of the opening is adjusted; a clamp disposed inside the chamber and controlling the rotation of the open-end spanner while linearly reciprocating along the longitudinal direction of the chamber; and an operating lever disposed inside the chamber and operating the clamp to control the rotation of the open-end spanner by the clamp.

In the combination wrench according to an aspect of the present invention, the chamber extends along the longitudinal direction of the arm from the other end of the arm, the inside is hollow and the free end is provided in an open housing shape, the free end side of the chamber upper and At the lower portion, the locking jaws for rotatably supporting the open-end spanner are bent in the opposite direction, and cut-out holes for guiding the rotation of the open-end spanner may be formed on the free end side of the chamber and on both sides of the continuous chamber.

In the combination wrench according to an aspect of the present invention, the locking jaws are formed to have a concavely curved curvature forming a concentric circle with the outer circumferential surface of the open-end spanner when viewed in a plan view.

In the combination wrench according to an aspect of the present invention, the clamp extends along the longitudinal direction of the chamber, and one end surface of the clamp facing the free end side of the chamber is concavely curved to form a concentric circle with the outer peripheral surface of the open-end spanner. It is provided as a curved surface, and on one end of the clamp, internal teeth are formed to be arranged along the width direction of the clamp, and on one side of the other end of the clamp opposite to the internal teeth, one end of the actuating lever selectively contacts the protrusion. It can be formed integrally.

In the combination wrench according to an aspect of the present invention, a return long hole is formed to extend along the longitudinal direction of the clamp in the clamp, and a support shaft having both ends supported in the upper and lower portions of the chamber passes through the return long hole, and supports A compression coil spring may be mounted between the shaft and the other end of the return elongated bore adjacent to the actuation.

In the combination wrench according to an aspect of the present invention, the operating lever is disposed inside the chamber adjacent to each other between operations, and is provided in an elliptical shape in plan view, and the operating lever has both ends supported on the upper and lower sides of the chamber. It is rotatably supported on the rotating shaft, and an operation knob is formed on the other end side of the operation lever, the operation knob extends through the upper part of the chamber, and an operation long hole is formed in the upper part of the chamber to expose the operation knob and guide the operation knob can be

In the combination wrench according to an aspect of the present invention, the open-end spanner is provided in the shape of a disk, and guide grooves in which the locking jaws are slidably fitted are concentric with the outer peripheral surface of the open-end spanner in upper and lower portions of the open-end spanner. , and external teeth selectively engaged with internal teeth on the outer peripheral surface of the open-end spanner may be formed to be arranged along the outer peripheral surface of the off-end spanner.

According to the present invention, since the operator can arbitrarily rotate the angle of the opening side of the open-end spanner, the head of the bolt or the nut can be inserted into the opening side of the open-end spanner at various angles to enable the rotation of the arm. , whereby it is possible to provide an effect of tightening or loosening all bolts and nuts with only one combination wrench according to the present invention during aviation maintenance.

1 is a perspective view showing a combination wrench according to the present invention.
Figure 2 is a cross-sectional view showing the inside of the gwaehhae fixing means shown in Figure 1, a cross-sectional view showing a state in which the open-end spanner is fixed.
Figure 3 is a cross-sectional view showing the inside of the gwaehhae fixing means shown in Figure 1, a cross-sectional view showing a state in which the fixation of the open-end spanner is released.

Hereinafter, an embodiment implementing the combination wrench according to the present invention will be described in detail with reference to the drawings.

However, the intrinsic technical idea of the present invention cannot be said to be limited by the embodiments described below, and the It is disclosed that the range that can be easily suggested as a method of substitution or change of the embodiment described in is included.

In addition, since the terms used below are selected for convenience of description, in grasping the intrinsic technical idea of the present invention, they are not limited to the dictionary meaning and are appropriately interpreted as meanings consistent with the technical spirit of the present invention. it should be

1 to 3 are views showing a combination wrench according to the present invention.

1 to 3 , the combination wrench 100 according to the present invention includes an arm 110 that an operator can hold and a box end spanner 120 integrally formed with one end of the arm 110; box end spanner, box end wrench) and an open-end spanner ( 160; open end spanner, open end wrench).

Here, the arm 110 and the box-end spanner 120 are similar to and identical to those of a conventional conventional combination wrench, and detailed descriptions of the arm 110 and the box-end spanner 120 are omitted in the present invention. .

That is, the combination wrench 100 according to the present invention is mainly characterized by an open-end spanner 160 mounted to the gwaehae fixed means 130 and the gwaehae fixed means 130 to be angularly adjustable.

First, the gwaehae fixing means 130 is to be disposed on the other end of the arm 110 opposite to the box-end spanner 120 as shown, the gwaehae fixing means 130 is a chamber 132, and a clamp (138) and an operating lever 150 .

The chamber 132 defines a clamp 138 and an actuating lever 150 therein, and supports the open-end spanner 160 so as to be angularly adjustable, that is, rotatably.

The chamber 132 extends along the longitudinal direction of the arm 110 from the other end of the arm 110 , and is provided in a substantially rectangular enclosure shape with a hollow interior and an open free end.

At this time, at the upper and lower sides of the free end side of the chamber 132, locking jaws 134 for rotatably supporting the open-end spanner 160 are bent in the opposite direction, and the locking jaws 134 are the open-end spanners ( When the angle of 160) is adjusted, the open-end spanner 160 is formed to have a concavely curved curvature that forms a concentric circle with the outer circumferential surface of the open-end spanner 160 in a plan view so that the open-end spanner 160 can rotate smoothly.

In addition, the free end side of the chamber 132 and both sides of the continuous chamber 132 have cut-out holes 136 for guiding the rotation of the open-end spanner 160 supported by the locking jaws 134 when the open-end spanner 160 is rotated. ) is formed to be connected to the open free end of the chamber 132 .

The clamp 138 controls the rotation of the open-end spanner 160 while linearly reciprocating along the longitudinal direction of the chamber 132 by the operation of the operation lever 150 .

The clamp 138 is disposed inside the chamber 132 as shown, and extends along the longitudinal direction of the chamber 132 .

At this time, the one end surface of the clamp 138 facing the free end side of the chamber 132 is provided as a concavely curved curvature surface that forms a concentric circle with the outer peripheral surface of the open-end spanner 160 like the locking jaws 134. , on one end surface of the clamp 138 , internal teeth 140 are formed to be arranged at a predetermined pitch along the width direction of the clamp 138 .

And on one side of the other end surface of the clamp 138 opposite to the internal tooth 140, the operation lever 150 is integrally formed so that the operation rod 142 in contact with the selectively protrudes.

That is, when the actuating lever 150 is in contact with the extended end of the actuating rod 142 , the clamp 138 moves to the free end of the chamber 132 . At this time, the internal teeth 140 are the open-end spanner 160 . In engagement with the open-end spanner 160 is fixed so as not to rotate.

Conversely, when the actuating lever 150 is separated from the extended end side of the actuating rod 142 , the clamp 138 moves to the fixed end side of the chamber 132 . detached, and thereby the open-end spanner 160 may be rotated.

Meanwhile, the clamp 138 may be configured to be automatically movable toward the fixed end of the chamber 132 when the open-end spanner 160 is unfixed.

To this end, the clamp 138 is formed with a return elongated hole 144 extending along the longitudinal direction of the clamp 138 .

And the return long hole 144 has a support shaft 146 supported at both ends on the upper and lower portions of the chamber 132 is passed through, at this time the other end of the return long hole 144 adjacent to the support shaft 146 and the operation 142 . A conventional compression coil spring 148 is mounted therebetween.

That is, when the actuating lever 150 is in contact with the extended end side of the actuating stem 142 and the clamp 138 moves to the free end side of the chamber 132, the compression coil spring 148 is compressed in its length, When the operation lever 150 is released from the extended end side of the 142 , the length of the compression coil spring 148 is restored, whereby the clamp 138 is automatically moved to the fixed end side of the chamber 132 .

The actuating lever 150 operates the clamp 138 so that the clamp 138 intermits the rotation of the open-end spanner 160 .

The actuating lever 150 is disposed inside the chamber 132 adjacent to the actuating rod 142 of the clamp 138 as shown, and the actuating lever 150 is provided in an approximately elliptical shape in a plan view.

At this time, both ends of the operation lever 150 are rotatably supported by the rotation shaft 152 supported on the upper and lower portions of the chamber 132 .

And an operation knob 154 is formed on the other end side of the operation lever 150 , the operation knob 154 extends through the upper portion of the chamber 132 , and the operation knob 154 is exposed on the upper portion of the chamber 132 . and an operation long hole 156 through which the operation knob 154 is guided is formed.

That is, when the operation knob 154 exposed to the upper part of the chamber 132 is pushed to one side of the operation long hole 156 , the operation lever 150 rotates toward the operation rod 142 around the rotation shaft 152 , at this time One end of the actuating lever 150 is in contact with the extended end of the actuating rod 142 and the clamp 138 is moved to the free end of the chamber 132 so that the internal tooth 140 of the clamp 138 is an open-end spanner. (160) to engage.

Conversely, when the actuating knob 154 is pushed to the other side of the actuating long hole 156 , one end of the actuating lever 140 is separated from the extended end of the actuating rod 142 , whereby the clamp 138 moves into the chamber 132 . It is moved to the fixed end side of the, at this time, the open-end spanner 160 can be rotated.

The open-end spanner 160 makes it possible to tighten or loosen a bolt or nut, as anyone can see.

The open-end spanner 160 is provided in the shape of a substantially disk formed in a predetermined arc as shown, and the off-end spanner 160 has an opening ( 162) is formed.

Here, the opening 162 is the same as the opening of a conventional open-end spanner, and it will be appreciated by anyone that the opening 162 may be provided in various sizes.

Meanwhile, guide grooves 166 are formed in the upper and lower portions of the open-end spanner 160 so as not to interfere with the opening 162 .

At this time, the guide grooves 166 are formed to form a concentric circle with the outer circumferential surface of the open-end spanner 160, and the guide grooves 166 are slidably fitted with engaging projections 134 formed on the free end side of the chamber 112. lose

That is, the open-end spanner 160 is rotatably supported in the chamber 112 by inserting the guide grooves 166 into the locking protrusions 134 of the chamber 112 .

And on the outer circumferential surface of the open-end spanner 160, external teeth 164 selectively engaged with the internal teeth 140 of the clamp 138 so as not to interfere with the opening 162 are provided along the outer circumferential surface of the off-end spanner 160. It is formed to be arranged at a predetermined pitch.

That is, when the internal teeth 140 formed in the clamp 138 engage the external teeth 164, the open-end spanner 160 is fixed without rotation, and on the contrary, when the internal teeth 140 are separated from the external teeth 164, it is off The end spanner 160 may be rotated.

Hereinafter, the use state of the combination wrench 100 formed as described above will be briefly described.

In order to adjust the angle of the open-end spanner 160 of the combination wrench 100 according to the present invention, that is, the angle of the opening 162 of the open-end spanner 160, the external teeth 164 formed in the open-end spanner 160 The open-end spanner 160 is rotated so that the opening 162 is arranged at a desired angle by the operator under a state in which the internal tooth 140 formed in the clamp 138 is separated from the clamp 138 .

As described above, when the rotation of the open-end spanner 160 is completed, the operation knob 154 is pushed to one side to fix the open-end spanner 160 from rotation.

That is, when the actuating knob 154 is pushed to one side, one end of the actuating lever 150 moves to the free end of the chamber 132 while abutting the extended end of the actuating rod 142 . The clamp 138 is moved toward the free end of the chamber 132 while compressing the compression coil spring 148 , and the internal teeth 140 of the clamp 138 are engaged with the external teeth 164 of the open-end spanner 160 to open. The end spanner 160 is fixed so that it does not rotate.

Conversely, in order to rotate the open-end spanner 160 , the operating knob 154 is pushed to the other side to rotate the open-end spanner 160 .

That is, when the actuating knob 154 is pushed to the other side, one end of the actuating lever 150 is separated from the extended end of the actuating rod 142. At this time, the internal teeth 140 and external teeth 164 engaged with each other are compressed Due to the restoring force of the coil spring 148 , the clamp 138 is moved toward the fixed end of the chamber 132 .

In the combination wrench 100 according to the present invention formed as described above, the angle of the opening 162 side of the open-end spanner 160 can be arbitrarily rotated by the operator, so that the arm 110 can rotate at various angles. The head or nut can be inserted into the opening 162 side of the open-end spanner 160, whereby all bolts and nuts can be tightened or loosened with only one combination wrench 100 according to the present invention during aviation maintenance. do.

In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

Claims (7)

an arm that can be grasped by the operator;
a box-end spanner integrally formed with one end of the arm;
Gwaehaejeong means formed on the other end of the arm; and
An open-end spanner that is rotatably mounted to the gwaehaejeong means so that the angle of the opening is adjusted;
The gwahae fixing means,
a chamber rotatably supporting the open-end spanner to be angularly adjusted;
a clamp disposed inside the chamber and controlling rotation of the open-end spanner while linearly reciprocating along the longitudinal direction of the chamber; and
A combination wrench comprising a; is disposed inside the chamber, and the clamp operates the clamp to control the rotation of the open-end spanner.
The method according to claim 1,
The chamber extends along the longitudinal direction of the arm from the other end of the arm, the interior is hollow and the free end is provided in an open housing shape,
At the upper and lower portions of the free end side of the chamber, hooking jaws for rotatably supporting the open-end spanner are bent in the opposite direction,
A combination wrench in which cut-out holes for guiding the rotation of the open-end spanner are formed on both sides of the chamber following the free end of the chamber.
3. The method according to claim 2,
The locking jaws are a combination wrench formed to have a concavely curved curvature forming a concentric circle with the outer circumferential surface of the open-end spanner when viewed in a plan view.
3. The method according to claim 2,
The clamp extends along the longitudinal direction of the chamber,
One end surface of the clamp facing the free end side of the chamber is provided as a concavely curved curvature surface forming a concentric circle with the outer peripheral surface of the open-end spanner, and internal teeth on one end surface of the clamp form the width direction of the clamp formed to be arranged according to
A combination wrench integrally formed so that the one end side of the actuating lever selectively contacts the other end face of the clamp opposite the internal tooth to protrude.
5. The method according to claim 4,
A return long hole is formed in the clamp to extend along the longitudinal direction of the clamp,
A support shaft having both ends supported on the upper and lower portions of the chamber passes through the return long hole,
A combination wrench in which a compression coil spring is mounted between the support shaft and the other end of the return long hole adjacent between the operation.
5. The method according to claim 4,
The actuating lever is disposed inside the chamber adjacent to the actuation, and is provided in an elliptical shape in a plan view,
The operating lever is rotatably supported at both ends on a rotating shaft supported at upper and lower portions of the chamber,
The operation knob is formed on the other end side of the operation lever, the operation knob extends through the upper part of the chamber, and an operation long hole is formed in the upper part of the chamber to expose the operation knob and guide the operation knob combination wrench.
5. The method according to claim 4,
The open-end spanner is provided in a disk shape, and guide grooves in which the locking jaws are slidably fitted are formed in the upper and lower portions of the open-end spanner to form a concentric circle with the outer peripheral surface of the open-end spanner,
A combination wrench formed on the outer peripheral surface of the open-end spanner so that external teeth selectively engaged with the internal teeth are arranged along the external peripheral surface of the off-end spanner.

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