JPH0666960U - Fitting wrench - Google Patents

Abstract

(57) [Abstract] [Purpose] A drive that is provided with a wrench part with a jaw opening toward the end at one end and a tool for rotating around the line connecting the centers of both ends at the other end. By providing the coupling portion, it is possible to perform highly safe work in a narrow space as long as the opening portion of the wrench is coupled to the joint and the drive coupling portion is coupled to the drive tool. [Structure] A lower jaw 11 that freely slides by a worm 13 is provided at one end, and a wrench portion 10 in which a jaw coupled to a joint is opened toward one end is provided, and the other end is connected to the center of the both ends. A structure is provided in which a drive coupling portion 14 that fits into the drive tool 2 for rotating about a wire is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wrench, and more particularly, to a joint wrench used for tightening and loosening a joint for hydraulic piping of construction machines, machine tools and the like.

[0002]

[Prior art]

 In recent years, mechanical devices such as construction machines and machine tools have become smaller, and their hydraulic piping tends to have higher density and higher pressure. In this way, when disassembling and assembling highly dense pipes, there is little room to operate the part that will be the grip handle of the tool, work efficiency is poor, and the risk is high. However, since there is no suitable dedicated tool, when performing hydraulic piping work, generally, as shown in Fig. 7, the pipe joint is sandwiched with a monkey wrench A, and the handle of the monkey wrench A is sandwiched with another monkey wrench B. I was turning around.

[0003]

[Problems to be solved by the device]

 However, in such a conventional working method, in order to turn the joint comfortably, a considerable space for the work is required. I had no choice but to work as shown, but this method was often inefficient and inefficient. Moreover, since the monkey wrench, which has a thin sandwiched portion, is used to rotate the joint that is close to a cylindrical shape, the transmission and support of force becomes unstable, and the monkey wrench slips off easily, which is dangerous. Also, the connection with the monkey wrench that turns the handle between them was similarly unstable.

Further, when the method shown in FIG. 7 is used, the rotation angle of the adjustable wrench B needs to be about 180 degrees. However, as shown by the shaded areas in Fig. 8 (viewed from the direction of arrow L in Fig. 7), the other side of the joint and the left side are blocked by obstacles such as machines and hydraulic pipes. In this case, the handle of the adjustable wrench B hits the obstacle simply by turning the adjustable wrench B from the position of B ₀ in the direction of the arrow P in the figure to the position of B ₁ . Therefore, even if the direction of the adjustable wrench B is changed and rotated at that position, the head of the adjustable wrench B hits an obstacle when it reaches the position B ₂ . In this way, when the rotation angle of the monquench is only about 90 degrees, the joint J reaches the position of J ₂ from the position of J _{0 to} the position of J ₁ , and it cannot be rotated any more. Will be impossible to continue.

Therefore, when the joint J of FIG. 8 reaches the position of J ₂ , as shown in FIG. 9, only one adjustable wrench A or B can be used to rotate the joint J by changing the sandwiching direction. However, if the force is turned, the inner surface of the jaw C of the adjustable wrench A or B hits a portion of the joint J that opposes the threaded portion S, and the thread is crushed. The object of the present invention is to eliminate these problems by providing a drive coupling part for fitting a tool for turning the wrench at the other end of the wrench having a jaw opening at one end, thereby eliminating these problems. (EN) Provided is a joint wrench capable of safely and easily turning a joint arranged at.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the joint wrench 1 of the present invention has, at one end, a lower jaw 11 freely slidable by a worm 13 with respect to an upper jaw 10a, and a jaw 10a for connecting to any joint J to be rotated. , 11 is provided with a wrench portion 10 that opens toward the end, and at the other end, a drive coupling portion 14 that fits into a drive tool 2 for rotating about a line connecting the centers of the both ends as an axis. The structure is provided.

[0007]

【Example】

 Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of the present invention. FIG. 2 is a right side view of the embodiment shown in FIG. FIG. 3 is a left side view of the embodiment of FIG. FIG. 4 is a sectional view taken along line XX of FIG. 1 to 4, 10 is a wrench portion of the joint wrench 1 of the present invention. Reference numeral 11 denotes a lower jaw of a joint wrench, which is incorporated in the wrench portion 10 and is slidably engaged with the upper jaw 10a by a worm 13. The opening sandwiched between the upper jaw 10a and the lower jaw 11 is open toward one end (the left end in FIG. 1), and the opening width can be freely adjusted by rotating the worm 13.

Reference numeral 14 denotes a drive coupling portion provided at the other end of the joint wrench 1 (an end portion on the right side of the joint wrench 1 in FIG. 1). The drive coupling portion 14 drives the joint wrench 1 in this embodiment. Tool (for example, ratchet spinner) 2 that is used by inserting its head into a square hole such as a nut coupling socket via a ratchet mechanism (hereinafter referred to as ratchet spinner) 2, and a fitting portion 15 and not shown. It has a fitting portion 16 that fits into a spanner. The fitting portion 15 is a square hole having a square cross section, and is fitted into the convex portion 21 having a square cross section of the head of the ratchet spinner 2. The hole 15a is fitted to the protruding portion of the ball 21a for preventing the once inserted convex portion 21 from falling off when the convex portion 21 of the ratchet spinner 2 is inserted into the fitting portion 15. The fitting portion 16 has a prismatic shape with a hexagonal cross section, and is formed so as to fit into a head opening portion of a spanner (not shown).

FIG. 5 is an explanatory view of the ratchet spinner 2 of the embodiment shown in FIG. FIG. 6 is an explanatory diagram of the state of FIG. 5 viewed from the right side. When using the embodiment shown in FIGS. 1 to 4, for example, as shown in FIG. 5, the convex portion 21 of the head of the ratchet spinner 2 is inserted into the square hole of the drive coupling portion 14 of the joint wrench 1, and Adjust the position of the lower jaw 11 by turning the worm 13 and connect to the joint J. Then, as shown in FIG. 6, when the handle 22 of the ratchet spinner is swung, the joint wrench 1 rotates and the joint J can be tightened (or loosened).

Whether to tighten or loosen is arbitrary because the direction of rotation of the head with respect to the swing of the handle 22 can be switched by a switching lever (not shown) on the head of the ratchet spinner 2. Can be selected. The space necessary for this operation is sufficient if the swing range of the handle 22 is about 15 degrees.

Further, in this embodiment, as shown in the explanatory view (plan view) of FIG. 10, the width T _l of the upper jaw 10a of the wrench portion 10 and the portion of the lower jaw 11 facing the joint J is wide, and a general adjustable wrench. Since it is about 3 times the width T _m of the head, stable work can be guaranteed. Of course, the width of the spanner is much wider than the thickness of the spanner. Therefore, connecting the spanner to the fitting portion 16 and rotating the joint J through this embodiment directly rotates the joint J with the spanner. The method can guarantee safer work.

[0012]

[Effect of device]

 As described in detail above, according to the present invention, a wrench portion having a jaw for coupling with a joint opening toward the end is provided at one end, and the other end is rotated about a line connecting the centers of the both ends. By providing a drive coupling part that fits the drive tool for connecting, the opening of the wrench can be coupled to the joint, and the drive coupling part can be coupled to the drive tool, resulting in a much narrower space than the conventional method. Moreover, there is an effect that the work of assembling or removing the joint with high safety can be easily performed. Therefore, when the embodiment of the present invention is used in combination with a ratchet spinner or a spanner, the drive space is insufficient and work is interrupted as in the case where two conventional Monki spanners are used in an unstable state. You can be relieved from unstable posture and dangerous handling of tools, and work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a right side view of the embodiment of FIG.

FIG. 3 is a left side view of the embodiment of FIG.

FIG. 4 is a sectional view taken along line XX in FIG.

5 is an explanatory view (front view) showing an example of a usage state of the embodiment of FIG.

FIG. 6 is an explanatory diagram (right side view) showing an example of a usage state of the embodiment of FIG.

FIG. 7 is an explanatory diagram showing an example of a conventional joint tightening / loosening method.

8 is an explanatory diagram showing a constraint situation in a narrow place of the method of FIG.

FIG. 9 is an explanatory diagram showing a defect of another operation subsequent to the operation of FIG.

FIG. 10 is an explanatory diagram comparing the head of the monkey wrench with the embodiment of FIG. 1 according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint wrench 2 Drive tool (ratchet spinner) 10 Wrench part 11 Lower jaw 13 Worm 14 Drive coupling part 15,16 Fitting part 21 Convex part 22 Handle J Joint

Claims (1)

[Scope of utility model registration request] 1. A wrench portion is provided at one end thereof, which has a lower jaw freely slidable by a worm with respect to the upper jaw and has the jaw open toward the end for connection with an arbitrary joint to be rotated. A joint wrench characterized in that a drive coupling portion that fits into a drive tool for rotating about a line connecting substantially the centers of the both ends is provided at the end.