JP3047613U - Plug removal tool - Google Patents

Abstract

(57) Abstract: A plug attachment / detachment tool (1) has an L-shaped curved cylindrical arm (2), one end of which has a first shaft (3) and the other end. The first shaft and the second shaft are connected to each other by a flexible shaft 5 so as to rotate integrally. An eyeglass wrench 8 is provided at the tip of the first shaft, and a socket wrench 9 is provided at the tip of the second shaft. When removing the plug, the plug can be completely removed by first loosening the tightly tightened plug using the spectacle wrench 8, then fitting the socket wrench 9 to the plug and rotating the spectacle wrench. . [Effect] The plug can be quickly attached and detached even in a narrow space as compared with the related art.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a plug detaching tool suitable for detaching a drain plug used in, for example, an automobile engine.

[0002]

[Prior art]

 Conventionally, an eyeglass wrench or a socket wrench has been known as a plug detaching tool. These eyeglass wrench or socket wrench includes an engaging portion with a plug, and a lever portion for turning the engaging portion to rotate the plug. It has. When removing the plug with such a tool, in general, first loosen the plug by rotating the lever part with the engagement part engaged with the plug, and then, when the plug turns lightly, The plug is rotated by hand to remove it.

[0003]

[Problems to be solved by the invention]

 However, in the above-mentioned spectacle wrench or socket wrench, it is necessary to loosen the plug while rotating the lever portion about the above-mentioned engaging portion. The plug had to be loosened while swinging back and forth. As a result, if there is not enough space to rotate or swing the lever, the workability has deteriorated. The present invention has been made in view of the above circumstances, and provides a plug attaching / detaching tool capable of quickly and easily performing a plug attaching / detaching operation even in a small space.

[0004]

[Means for Solving the Problems]

 That is, the present invention provides an L-shaped cylindrical arm, a first shaft rotatably provided at one end of the arm, and a second shaft rotatably provided at the other end of the arm. A flexible shaft disposed at a bent portion of the arm and connecting the first shaft and the second shaft; a wrench provided at a distal end of the first shaft; and a socket wrench provided at a distal end of the second shaft. It is characterized by having the following.

[0005]

[Action]

 When removing the plug with the plug removal tool having the above-described configuration, first, the wrench of the first shaft is engaged with the plug, and the arm is rotated about the axial direction of the plug in this state. At this time, the wrench is rotatable about the longitudinal direction of the arm. Nevertheless, by rotating the arm, the plug can be rotated to loosen it. Next, when the drain plug is loosened, the wrench is removed from the plug, and a socket wrench is engaged with the plug instead. In this state, by rotating the wrench of the first shaft about the longitudinal direction of the arm, the socket wrench can be rotated through the first shaft, the flexible shaft, and the second shaft. The plug can be removed without causing the plug to be removed.

[0006]

【Example】

 The present invention will be described below with reference to the illustrated embodiment. Referring to FIG. 1, a plug removal tool 1 includes a long main body 2A extending linearly, and a short bend curved at 90 degrees from one end of the main body 2A. And a cylindrical arm 2 composed of a portion 2B. A first shaft 3 and a second shaft 4 are rotatably fitted to the end of the main body 2A and the end of the bent portion 2B of the arm 2, respectively. The two shafts 4 are connected so as to be able to rotate integrally with each other via a flexible shaft 5 arranged at a bent portion of the arm 2. A pipe 6 having the same diameter as the main body 2A is integrally fixed to the first shaft 3 at the right end in FIG. 1 by welding, and the left end face of the pipe 6 is connected to the right end face of the main body 2A. , So that the first shaft 3 is not further displaced leftward, that is, into the main body 2A. On the other hand, the second shaft 4 is provided with a flange portion 4A, and the lower end surface of the flange portion 4A is brought into contact with the upper end surface of the bent portion 2B so that the second shaft 4 is further lowered. That is, it is prevented from displacing into the bent portion 2B. Further, in the illustrated embodiment, the flexible shaft 5 is formed by spirally winding a wire having spring properties, and both ends thereof are fixed to the first shaft 3 and the second shaft 4 by welding. I have. The flexible shaft 5 is linear in its natural state, but can be bent to follow the curve when it is received from the main body 2A of the arm 2 to the bent portion 2B. The rotation of one of the shaft 3 and the second shaft 4 can be transmitted to the other. The flexible shaft 5 hardly expands and contracts in the axial direction, so that the first shaft 3 and the second shaft 4 hardly displace in the axial direction.

Further, in the illustrated embodiment, the right end of the first shaft 3, that is, the protruding portion protruding rightward from the pipe 6 is a prismatic connecting portion 3 A, and a screwdriver wrench 8 is attached to the connecting portion 3 A. It is attached detachably. It is needless to say that an ordinary wrench may be provided instead of the eyeglass wrench 8. The eyeglass wrench 8 has a fitting hole 8A formed at the distal end thereof to be fitted to the outer periphery of the plug. The arm 2 is rotated while the head of the plug is fitted into the fitting hole 8A. By doing so, the plug can be loosened or tightened. On the other hand, an upper end portion of the second shaft 4, that is, a protruding portion projecting upward from the flange portion 4A is a prismatic connecting portion 4B, and a socket wrench 9 is detachably attached to the connecting portion 4B. The socket wrench 9 has a fitting portion 9A at its upper part for fitting and receiving the head of the plug. When the head of the plug is fitted into the fitting portion 9A, the wrench 8 is used. By rotating the plug in the forward and reverse directions, the plug can be loosened or tightened.

A magnet 11 is provided on the bottom surface of the fitting portion 9 A of the socket wrench 9, and the magnet 11 can suck and hold the plug. The magnet 11 does not necessarily need to be provided on the socket wrench 9 and may be provided on the second shaft 4. A lower end of a cylindrical sealing member 12 is attached to an upper end of the bent portion 2B. The inner peripheral surface of the upper end of the sealing member 12 is liquid-tight to the outer peripheral surface of the flange 4A of the second shaft 4. And the second shaft 4 and the arm 2 are sealed by sliding. Accordingly, it is possible to prevent oil from entering the arm 2 from between the second shaft 4 and the bent portion 2B particularly when removing the drain plug. Note that the seal member 12 is not always necessary and may be omitted.

Although not shown, the connecting portions 3A and 4B are provided with balls urged by a spring (not shown). Each ball is provided on the spectacle wrench 8 and the socket wrench 9. The wrench 8 and the socket wrench 9 are prevented from dropping off from the connecting portions 3A and 4B by engaging in the hemispherical recesses. On the other hand, when exchanging the spectacle wrench 8 or the socket wrench 9, each ball can be retracted into the connecting portions 3A, 4B against the above-mentioned spring, thereby removing the ball from the above-mentioned depression. The eyeglass wrench 8 and the socket wrench 9 can be detached from the connecting portions 3A and 4B.

When the drain plug of the automobile engine is removed using the plug removal tool 1 having the above configuration, first, the fitting hole 8A of the eyeglass wrench 8 is engaged with the drain plug. , Ie, the arm 2 is rotated about the axial direction of the drain plug. At this time, the spectacle wrench 8 is rotatable around the longitudinal direction of the main body 2A, but in spite of this, the drain plug can be rotated to loosen it. When the drain plug is loosened in this way, the spectacle wrench 8 is then removed from the drain plug, and the socket wrench 9 is engaged with the drain plug instead. In this state, the worker supports the arm 2 with one hand and rotates the socket wrench 9 by rotating the spectacle wrench 8 about the longitudinal direction of the main body 2A with the other hand. The drain plug can be removed. In this case, it is not necessary to rotate the arm 2 about the axial direction of the drain plug, so that the drain plug can be efficiently removed even in a small space. Since the drain plug removed from the engine is held by the socket wrench 9 by the magnet 11, the drain plug does not fall into the oil pan that receives the oil flowing out of the engine. Further, even if the drain plug becomes hot due to oil after traveling of the automobile, it is not necessary to hold the drain plug by hand, so that burns can be prevented.

As described above, the operation of rotating the arm 2 about the axial direction of the drain plug is only the first operation of loosening the drain plug, and after that the eyeglass wrench 8 needs to be rotated. Therefore, even if the space for rotating the arm 2 is small, the operation of removing the drain plug can be performed quickly and easily. The same applies to the operation of mounting the drain plug. The operation of rotating the arm 2 around the axis of the drain plug is the last operation of completely tightening the drain plug, and the operation of tightening the drain plug before that is performed. Since it is not necessary to rotate the arm 2 in the operation, the operation of mounting the drain plug can be performed quickly and easily.

[0012]

[Effect of the invention]

 As described above, according to the present invention, there is obtained an effect that the plug can be quickly attached and detached even in a narrow space as compared with the related art.

[Brief description of the drawings]

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Plug removal tool 2 ... Arm 3 ... First shaft 4 ... Second shaft 5 ... Flexible shaft 8 ... Eye wrench 9 ... Socket wrench

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naoki Kondo 3-65 Midorigaoka, Toyota-shi, Aichi Pref.

Claims (7)

[Utility model registration claims] 1. An L-shaped curved cylindrical arm, a first shaft rotatably provided at one end of the arm, and a second shaft rotatably provided at the other end of the arm. The first shaft and the second shaft are arranged at a bent portion of the arm.
A plug removal tool comprising: a flexible shaft that connects a shaft; a wrench provided at a tip of the first shaft; and a socket wrench provided at a tip of the second shaft. 2. The plug removal tool according to claim 1, wherein the wrench of the first shaft is a spectacle wrench. 3. The wrench according to claim 1, wherein the wrench is detachably provided on the first shaft.
Plug removal tool described in. 4. The plug removal tool according to claim 1, wherein the socket wrench is detachably provided on the second shaft. 5. The plug removal tool according to claim 1, wherein a magnet is provided on the socket wrench. 6. The plug detaching tool according to claim 1, wherein a magnet is provided on the second shaft. 7. The plug removal tool according to claim 1, further comprising a seal member for sealing between the second shaft and the arm.