JP2015054377A - L-shaped wrench - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an L-shaped wrench which allows a user to perform rapid spinning of the wrench preferably without hindrance of rapid spinning of the wrench, and can increase operation torque of the wrench preferably, and from which a pipe member can be removed to attach the pipe member to other L-shaped wrench for use.SOLUTION: A long side part 1a of a wrench body 1 has a pipe member 2 having length shorter than the long side part 1a attached rotatably and detachably. A coil spring 5 fitted to a fitting groove 4 formed on an inner periphery of at least one end part of the pipe member 2 presses part of the pipe member 2 and the coil spring 5 can be engaged to an engagement groove 3 formed on the long side part 1a and can be released from the engagement groove 3.

Description

  The present invention relates to an L-shaped wrench used for tightening or loosening a rectangular tube body or a bolt with a hole.

  Conventionally, as this type of L-shaped wrench, for example, as shown in FIG. 8a, there is one in which a pipe body 12 is rotatably attached to a long side portion 11a of a wrench body 11 (Patent Document 1).

  In the conventional L-shaped wrench as described above, the wrench body 11 is smoothly rotated by the pipe body 12 and can be rotated quickly.

  Further, as this type of L-shaped wrench, for example, as shown in FIGS. 9 and 10, an operation auxiliary pipe 23 in which a fitting insertion hole 22 having a shape matching the outer shape of the cross section of the base 21 b of the polygonal wrench 21 is formed. In addition, there is a configuration in which a gripping portion that is inserted into the base portion 21b of the polygon wrench 21 and assists the rotation operation of the polygon wrench 21 is configured (Patent Document 2).

The conventional L-shaped wrench thus configured can transmit operation torque while the surface between the base 21b of the polygonal wrench 21 and the insertion hole 22 is in contact with each other, and the operation torque of the operation auxiliary pipe 23 is reliably ensured. The workability is improved by being transmitted to the polygonal wrench 21, the deformation of the operation auxiliary pipe 23 is suppressed, and problems such as occurrence of a return portion at the end edge of the operation auxiliary pipe 23 can be avoided. In addition, as this type of L-shaped wrench, for example, as shown in FIG. There are those provided with a wrench tool rotating auxiliary pipe formed in a diameter that can be fitted to the tip of the long rod 34 or the short rod 35 of the wrench tool 36 in which the rod 34 and the short rod 35 are arranged in an L shape. (Patent Document 3).

  In the conventional L-shaped wrench thus configured, for example, the opening of the short pipe portion 32 of the pipe member 33 is fitted on the tip of the short rod 35 of the wrench body 36, and the long pipe portion 31 of the pipe member 33 is gripped. Since the wrench body 36 can be held and rotated, the workability of the wrench can be remarkably improved.

Utility Model Registration No. 3134604 Japanese Utility Model Publication No. 5-63771 Japanese Utility Model Publication No. 4-60671

  However, in the conventional L-shaped wrench shown in FIG. 8a, the pipe body 12 is not positioned on the long side portion 11a of the wrench body 11, so that if the wrench body 11 is quickly turned by grasping the pipe body 12, it rotates fast. The pipe body 12 moved in the middle of this, and had the subject that it would interfere with a rapid rotation.

  Therefore, in the conventional L-shaped wrench, as shown in FIG. 8b, the pipe body 12 rotatably inserted into the long side portion 11a of the wrench body 11 does not move along the long side portion 11a. The retaining ring 13 can be arranged above and below the pipe body 12. However, if it does in this way, since the said pipe body 12 will not move along the long side part 11a, it has the subject that this pipe body 12 cannot be replaced | exchanged and used for another L-shaped wrench. become. Further, if the pipe body 12 does not move along the long side portion 11a, the long side portion 11a cannot be further extended by the pipe body 12, and the operation torque cannot be increased. Will have.

  Further, in the conventional L-shaped wrench shown in FIGS. 9 and 10, the base 21b can be extended by the operation assisting pipe 23, and the operation torque can be increased by the lever principle. Since it cannot rotate, there was a problem that the wrench could not be rotated quickly.

  Further, in the conventional L-shaped wrench shown in FIG. 11, the workability of the wrench can be improved by increasing the operating torque by the pipe member 33 in which the long pipe member 31 and the short pipe portion 32 are connected in an L shape. Even if it can be remarkably improved, it has a problem that it is unsuitable for rapid use.

  Therefore, the present invention aims to solve the problems of the above-mentioned conventional L-shaped wrench, and it is possible to suitably rotate the wrench without disturbing the rapid rotation of the wrench, and to further improve the operation torque of the wrench. It is an object of the present invention to provide an L-shaped wrench that can be used in a state where the pipe member can be removed and the pipe member attached to another L-shaped wrench.

  Therefore, in the L-shaped wrench of the present invention, a pipe member 2 shorter than the long side portion 1a is attached to the long side portion 1a of the wrench main body 1 so as to be rotatable and detachable, and at least one end portion of the pipe member 2 is attached. A part of the pipe member 2 is pressed by a coil spring 5 fitted into a fitting groove 4 formed on the inner periphery of the coil member, and the coil spring 5 is freely engageable with and disengageable from an engaging groove 3 formed on the long side portion 1a. It is supposed to be.

  In the L-shaped wrench of the present invention, the pipe member 2 is 70 to 80% of the long side 1a of the wrench body 1.

  Furthermore, in the L-shaped wrench of the present invention, the engagement groove 3 is located at a position 1/2 to 1/4 of the long side portion 1a from the head Ha side of the long side portion 1a of the wrench body 1. It is assumed that it was provided.

  In the L-shaped wrench of the present invention, the coil spring 5 has a number of turns from one and a half to two.

  The L-shaped wrench of the present invention is configured as described above, and a part of the long side portion 1a of the wrench body 1 is pressed by the coil spring 5 so that the long side portion 1a of the wrench body 1 is pressed. Since the pipe member 2 is positioned, even if the pipe member 2 is gripped and the wrench main body 1 is rotated quickly, the pipe body 12 does not move during the rapid rotation, and the fast rotation is not hindered. The wrench can be turned quickly.

  Furthermore, in the L-shaped wrench of the present invention, when it is desired to increase the operating torque of the wrench, the long side portion 1a of the wrench body 1 is extended by the pipe member 2, so that the operating torque of the wrench can be suitably increased. It will be a thing.

  In addition, the L-shaped wrench of the present invention removes the pipe member 2 from the long side portion 1a of the wrench main body 1 and attaches the pipe member 2 to the long side portion of another wrench main body. Turning and operating torque of the wrench can be increased suitably, which is very convenient.

1 is an overall perspective view of an L-shaped wrench of the present invention. It is a disassembled perspective view of the L-shaped wrench of this invention. It is a side view of the L-shaped wrench of this invention. It is sectional drawing of the L-shaped wrench of this invention by AA in FIG. FIG. 5 is an enlarged view of a portion surrounded by a circle a and a circle b in FIG. 4. It is explanatory drawing at the time of using the L-shaped wrench of this invention as a fast turn wrench. It is explanatory drawing in the case of using it increasing the operating torque of the L-shaped wrench of this invention. It is a side view which shows an example of the conventional L-shaped wrench. It is a side view of the modification of the conventional L-shaped wrench shown in FIG. 8a. It is a perspective view which shows the other example of the conventional L-shaped wrench. FIG. 10 is an exploded perspective view of the conventional L-shaped wrench shown in FIG. 9. It is a perspective view which shows the other example of the conventional L-shaped wrench.

  Hereinafter, the form for implementing the L-shaped wrench of this invention is explained in detail based on a drawing.

  The L-shaped wrench of the present invention is composed of a wrench body 1 and a pipe member 2 as shown in FIGS. The wrench body 1 has a long side portion 1a and a short side portion 1b connected in an L shape, and an engagement groove 3 is formed in the long side portion 1a. The pipe member 2 is shorter than the long side portion 1a of the wrench body 1, and a coil spring 5 is fitted into a fitting groove 4 formed at least at one end (the illustrated one is both ends).

  The L-shaped wrench of the present invention is fitted to the long side 1a of the wrench body 1 so that the pipe member 2 can be rotated and inserted and removed, and is formed on the inner periphery of at least one end of the pipe member 2. A part of the pipe member 2 is pressed by a coil spring 5 fitted in the mating groove 4, and the coil spring 5 can be engaged with and disengaged from the engaging groove 3 formed in the long side portion 1 a.

  In the illustrated example, the wrench body 1 is formed by bending a hexagonal cross-section of a rod body into an L shape, a head Ha having a tip of the long side portion 1a having a hexagonal cross section as a ball point, and a short side portion 1b. The head is a hexagonal cross-section head Hb, but a polygonal cross-section rod other than the hexagonal shape is bent into an L shape, and the long side portion 1a and the short side portion 1b have the tips thereof. Polygonal heads Ha and Hb corresponding to the polygonal shape may be used. The wrench main body 1 may be formed by bending a round bar into an L shape and using the tips of the long side 1a and the short side 1b as heads Ha and Hb having any of the shapes described above. Good.

  In the illustrated example, the pipe member 2 is a round pipe, which is made of metal, but may be made of hard plastic and has a length of 70 to 80% of the long side portion 1a of the wrench body 1. . By doing so, the pipe member 2 can be easily gripped and the wrench main body 1 can be easily rotated, and the long side portion 1a of the wrench main body 1 is extended by the pipe member 2, whereby the wrench main body 1 is extended. The operating torque can be increased.

  In the illustrated example, the engaging groove 3 is formed by cutting out all the corners of the hexagonal shape of the long side portion 1a of the wrench body 1, but the hexagonal shape of the long side portion 1a of the wrench body 1 is provided. The corners of the long side 1a may be cut out every other side, and the long side 1a is provided at a position 1/2 to 1/4 of the length of the long side 1a from the head Ha side. It is supposed to be. By doing so, the long side portion 1a of the wrench body 1 is extended by the pipe member 2 in a state where the coil spring 5 fitted in the fitting groove 4 of the pipe member 2 is engaged with the engagement groove 3. Thus, the operating torque of the wrench can be suitably increased.

  In the illustrated example, the fitting groove 4 is formed on the inner periphery of both ends of the pipe member 2, and the coil spring 5 protrudes from the inner periphery of the pipe member 2. A part of the surface of the long side portion 1 a of the wrench body 1 is pressed by the inner periphery of the wrench body 1. By doing so, a part of the long side portion 1 a of the wrench body 1 is pressed by the coil spring 5, whereby the pipe member 2 is positioned on the long side portion 1 a of the wrench body 1.

  In the illustrated example, the coil spring 5 is made of metal, but may be made of hard plastic, and the number of turns is changed from one and a half to two. The coil spring 5 is inserted into the fitting groove 4 so that the outer peripheral surface of the coil spring 5 is in pressure contact with a part of the bottom surface 4 a of the fitting groove 4. Further, the coil spring 5 is fitted into the fitting groove 4 so that the front and rear ends of the coil spring 5 are in contact with a part of the front and rear wall surfaces 4 b and 4 c of the fitting groove 4 so as not to move in the fitting groove 4. It is preferable that By doing so, the coil spring 5 presses the long side portion 1a of the wrench main body 1 with an appropriate force, and the pipe member 2 is positioned on the long side portion 1a of the wrench main body 1. It becomes easy to rotate the side part 1 a, insert the long side part 1 a into the pipe member 2, or remove it from the pipe member 2.

  The L-shaped wrench of the present invention configured as described above can be used to operate the wrench quickly as described below, and can further increase the operating torque of the wrench. .

  First, in the case where the L-shaped wrench of the present invention is used for rapid rotation, as shown in FIG. 6, the short side 1b of the wrench body 1 is grasped with a dominant hand, the pipe member 2 is grasped with the other hand, and the wrench is If the head Ha of the long side portion 1a of the main body 1 is fitted into a square hole (not shown) such as a square tube or a bolt with a hole, and the long side portion 1a is rotated, the pipe is turned in the middle. The member 2 does not move, and the wrench can be turned quickly without any hindrance to the turning.

  Next, when the operating torque is increased with the L-shaped wrench of the present invention, the long side 1a of the wrench body 1 is extended by the pipe member 2, and the pipe member 2 is used as a dominant hand as shown in FIG. If the head Hb of the short side 1b of the wrench body 1 is fitted into a square hole (not shown) such as a square tube or a bolt with a hole and the short side 1b is rotated, the pipe By extending the long side 1a of the wrench body 1 by the member 2, the wrench operating torque can be suitably increased.

  Furthermore, in the L-shaped wrench of the present invention, when the pipe member 2 is detached from the long side 1a of the wrench body 1 and attached to the long side of another L-shaped wrench, the other L-shaped wrench can be turned quickly. In addition, the operation torque of the wrench can be suitably increased. When the pipe member 2 is attached to the long side portion of another L-shaped wrench, the pipe member 2 is not the one in which the coil spring 5 is fitted in the fitting groove 4 formed on the inner periphery of both end portions of the pipe member 2. Can be attached by inserting it from either end into the long side of another L-shaped wrench, but with the coil spring 5 fitted in the fitting groove 4 formed on the inner circumference of only one end of the pipe member 2 It is necessary to attach the pipe member 2 by inserting it from one end portion into the long side portion of another L-shaped wrench.

DESCRIPTION OF SYMBOLS 1 Wrench main body 1a Long side part 2 Pipe member 3 Engaging groove 4 Fitting groove 5 Coil spring

Claims (4)

  A pipe member (2) shorter than the long side portion (1a) is attached to the long side portion (1a) of the wrench body (1) so as to be rotatable and detachable, and at least one end portion of the pipe member (2) A part of the pipe member (2) is pressed by a coil spring (5) fitted in a fitting groove (4) formed on the inner periphery of the coil member, and the coil spring (5) is moved to the long side part (1a). An L-shaped square wrench characterized in that it can be freely engaged and disengaged with the formed engaging groove (3).   The L-shaped square wrench according to claim 1, wherein the pipe member (2) has a length of 70 to 80% of a long side portion (1a) of the wrench body (1).   The engagement groove (3) extends from the head (Ha) side of the long side portion (1a) of the wrench body (1) to a position 1/2 to 1/4 length of the long side portion (1a). The L-shaped square wrench according to claim 1, wherein the L-shaped square wrench is provided. The L-shaped square wrench according to any one of claims 1 to 3, wherein the coil spring (5) has a number of turns from one and a half to two.

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