JP2007136651A - Socket wrench - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a socket wrench from dropping when a commonly-available general-purpose L-shaped wrench is inserted into the socket wrench to tighten a screw. <P>SOLUTION: While the L-shaped wrench 5 is inserted into a connection inlet hole 2 on the head of the socket wrench 1, the wrench 5 is gripped by a structure in the hole 2. This prevents the socket wrench from dropping. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for tightening or loosening a screw by rotating a hexagonal nut shape with an L-shaped wrench by placing a socket wrench on a hexagonal nut shape for tightening or loosening a bolt screw or the like.

  In order to tighten and loosen the screw by rotating the hexagon nut shape, it is generally operated with a spanner, spectacle wrench, monkey wrench, etc. that matches the size of the hexagon nut, but depending on the position of this hexagon nut (for example, It is not possible to use with the above tool. Therefore, there is a T-shaped box that matches the hexagonal nut, but this has the unreasonableness of having a large number of T-shaped boxes that have the same diameter as the hexagonal nut.

  This is a socket wrench to eliminate this unreasonableness, and this is a rotation operation to tighten and loosen the screws. In the current state of the rotation operation, the rotation operation is performed with a square column piece connected and fitted to the connection socket square hole of the socket wrench head. This square pole piece is a tool that is integrally coupled with a wrench with a handle, and is a dedicated tool for a socket wrench.

  This special tool for socket wrench requires a special tool for socket wrench such as spinner handle, ratchet handle, slide head handle and so on. It is a tool.

For this reason, a tightening tool using a polygonal wrench, a tightening tool using an extension bar, and a public gazette related to such a device can be found.
JP 2000-237966 A JP 2001-347463 A JP2001-18175 JP 1994-337018

  The problem to be solved is that a special tool for the socket wrench is required to perform a rotating operation to tighten or loosen the screw with the socket wrench.

  In order to solve the above-described problems, a socket socket wrench is provided with a connection socket square hole, and a square pillar piece shaped to be fitted to the socket wrench is required. Therefore, a special tool dedicated to the socket wrench of each structure in accordance with the rotating function is required.

  Therefore, in the present invention, a hexagonal shape of the wrench cutting surface of a general-purpose hexagonal L-shaped wrench at hand is provided in the connection receiving hole of the head of the ketwrench, and a general-purpose L-shaped wrench is connected and fitted to the socket. If the wrench can be used by rotating it while supporting it so that it does not come off from the L-shaped wrench or fall, it can perform the same work as a special tool dedicated to a conventional socket wrench, and this is the main feature of the present invention. Let's say.

  Since the socket wrench of the present invention can be operated with a general-purpose L-shaped wrench at hand, the tool at hand can be used immediately, and the work tool is simplified except for the socket for tightening and loosening the screw. Holding and carrying are reduced. In addition, when a spherical portion having a hexagonal edge at the tip of the longer wrench of the L-shaped wrench is connected and engaged with the socket wrench head connection receiving hole inclined at the axis of the L-shaped wrench, the fluctuation characteristics of the spherical portion In this state, the socket wrench can be rotated along the axis of the screw, and the function of the universal joint is the same, so the parts of the universal joint can be omitted. If the column is rotated so that the propeller can be quickly turned with a fingertip, the work of temporarily tightening or loosening the socket can be quickly performed with a socket wrench.

  First, in order to temporarily tighten a screw with a socket wrench, a spherical shape having a hexagonal edge provided at the end of a long column portion of the hexagonal L-shaped wrench is inserted into a connection receiving hole of a socket wrench head to which a hexagonal L-shaped wrench can be fitted. When the part is inserted, the inner diameter of the snap ring fitted in the locking groove at the upper part of the connection receiving hole is inserted into this spherical neck while receiving the pressing force in the inner direction, and the inserted spherical part Can't escape even if it is pulled outward with a slight force. When the L-shaped wrench is rotated in this state, the socket wrench does not come off and swings while the hex nut and vault operate along the screw axis with a tightening force according to the rotational force, and can be temporarily tightened. It can also be loosened.

  Next, when the L-shaped wrench with the spherical portion inserted into the socket socket wrench hole is further pushed into the back of the socket wrench, the second head that locked the tip of the previously inserted spherical portion was locked. The snap ring expands the snap ring in the shape of a spherical head, and when the spherical portion locked at this position passes through the second snap ring and the spherical portion advances to the back of the socket wrench, this continues. Since the shape of the side surface of the regular hexagonal L-shaped wrench that has advanced between the first snap ring and the second snap ring of the L-shaped wrench matches the shape of the side wall of the connection receiving hole is fitted and held. Maximum torque is applied to the socket wrench fitted to the L-shaped wrench, and the socket wrench can strongly tighten the screw.

  FIG. 1 is a cross-sectional view of an embodiment of the socket wrench of the present invention, in which the shape of the connection receiving hole 2 at the head of the socket wrench 1 is the same as the cut surface of the hexagonal L-shaped wrench 5. When an L-shaped wrench 5 having a spherical tip 6 is inserted into the connection receiving hole 2 provided with the first snap ring 3 in a predetermined position on the upper side of the connection receiving hole 2, The inner diameter of the first snap ring 3 is expanded, and the first snap ring 3 is fitted into the neck portion 7 of the spherical tip 6 of the L-shaped wrench 5 inserted therein, and the neck portion 7 can be pulled out with a certain pulling force. The inner diameter is set so that the pressing force is applied inward.

  Then, the head of the tip spherical 6 of the L-shaped wrench 5 is engaged so that the inner diameter of the first snap ring fits into the tip spherical neck 7 and the tip spherical 6 does not move forward from the position where the tip spherical 6 is immersed. The second snap ring 8 for stopping is fitted as shown in FIG. 2, and the axis of the socket wrench 1 is made into an insertion hole 13 in which one end of the pin at the center 4 enters at the same time. The pin at one end of the snap pin 14 is inserted into two insertion holes 15 provided at both corners close to a diagonal line, and the tip 16 of this pin slightly protrudes inward from the insertion holes 13 and 15 to form an L-shaped wrench 5. Press contact from three directions so that the socket wrench 5 does not come off from the L-shaped wrench 5.

  Further, the action of the tip 16 of the pin is a state in which the tip 6 of the L-shaped wrench 5 is inserted into the neck 7 at the rear of the bulb 6 and the tip 6 of the L-shaped wrench 5 is immersed in the pressure contact action of the tip 16 of the pin. As a result, the socket wrench 1 is not fitted into the inner side of the socket wrench 1, and this state is maintained. The tip sphere 6 swings and swings so that the socket wrench 1 rotates along the axis of the screw. I can work.

  When an elliptical snap pin is attached to the base that engages with the hexagonal nut at the bottom of the socket wrench, and the tip of this pin is applied from three directions, the nut or bolt that is engaged with this base will easily enter the screw hole. To be fitted. Also, the nuts and bolts loosened from the screws by the base do not fall naturally when they are eaten by the base.

  It is sectional drawing implemented to the socket wrench of this invention. Example 1   It is sectional drawing to which the connection receptacle hole part was expanded. Example 1   It is a top view of a coil spring. (Example 2)   It is a top view of the coil spring made into hexagonal shape. (Example 3)   It is sectional drawing which showed the insertion hole of the connection receptacle hole part. (Example 4)   It is the top view which has arrange | positioned the elliptical-shaped snap pin to the socket wrench.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socket wrench 2 Connection receptacle hole 3 1st snap ring 4 1st fitting groove 5 Hexagonal L type wrench 6 Tip spherical shape 7 Neck part 8 Second snap ring 9 Second fitting groove 10 Coiled spring 11 Hexagonal shape Coiled spring 12 Corner of coiled spring 13 Insertion hole 14 Elliptical snap pin 15 Insertion hole 16 Pin tip

Claims (5)

  The socket socket wrench is provided with a connection socket hole, and the shape of the connection socket hole is the same as that of the hexagonal L-shaped wrench cutting surface so that they can be fitted to each other. A groove is provided, and a snap ring is fitted in this groove. A hexagonal L-shaped wrench is gripped by the inner diameter of the snap ring so that the socket wrench supported by the hexagonal L-shaped wrench does not fall off. Socket wrench.   A socket wrench characterized by holding a hexagonal L-shaped wrench with a coil spring instead of a snap ring for gripping the hexagonal L-shaped wrench so that the socket wrench does not fall off.   A socket wrench characterized in that the shape of the coil spring is formed in a circular shape close to a hexagonal shape, and the hexagonal corners grip the hexagonal edge of the hexagonal L-shaped wrench with contact pressure.   Insert an insertion hole for inserting both ends of the elliptical snap pin for the socket wrench to hold the hexagonal L-shaped wrench at an appropriate position on the upper side of the connection receiving hole and an elliptical snap pin in the middle of the hexagonal side of the connection receiving hole. One end of the pair of elliptical snap pins along the socket wrench in opposite directions is inserted into the insertion hole provided at the corner near the hexagonal diagonal. The socket wrench is characterized in that the tip of the inserted pin protrudes inward from the insertion hole, and a hexagonal L-shaped wrench is pressed and gripped from three directions.   A second fitting groove is provided at an appropriate interval position from the first fitting groove provided at a predetermined position on the upper side of the connection receiving hole of the socket wrench described in "Claim 1". Socket wrench characterized by heavy gripping.

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