CN204339674U - A kind of dismantling device of profile nut - Google Patents

Abstract

The utility model discloses a tool for disassembling and assembling special-shaped nuts, which comprises a base. The base is provided with a step groove that can be inserted into a cylindrical special-shaped nut. The side wall of the base is provided with two radially opposite screw holes at positions corresponding to the step grooves. The two screw holes are respectively fitted with a handle-type indexing pin through thread fit. The end of the handle-type indexing pin has a locking pin extending into the step groove. The locking pin corresponds to the clamping hole of the cylindrical special-shaped nut inserted into the step groove. It can be snapped into the snap hole on the side wall of the special-shaped nut. The utility model does not cause any damage to the outer surface of the special-shaped nut during the operation process, and can ensure the aesthetic appearance and service life of the special-shaped nut.

Description

A tool for removing and assembling special-shaped nuts

technical field

The utility model relates to a disassembling tool for disassembling a cylindrical special-shaped nut.

Background technique

Nuts are fastening parts that cooperate with bolts or screws. They are widely used in production machinery and daily life. Nuts are generally divided into standard nuts and special-shaped nuts (some irregular and odd-shaped nuts). Among them, the disassembly and assembly of the standard nut can be carried out by a common wrench, and the operation is very convenient; while the special-shaped nut cannot be disassembled and assembled by a common wrench. As shown in Figure 1, a cylindrical special-shaped nut 10 has a cylindrical outer wall Shaped, an annular groove 110 is opened on the outer wall, and two radially opposite clamping holes 110 are arranged in the annular groove 110. In the prior art, disassembly and assembly of this special-shaped nut can only be "bitten" by pliers. "The cylindrical outer wall of the special-shaped nut rotates the pliers firmly to loosen or tighten it. Although it can basically realize the disassembly and assembly operation of this special-shaped nut, it has the following shortcomings: 1. During the operation, the pliers and the special-shaped nut The round outer wall of the special-shaped nut is easy to slip, and the disassembly and assembly efficiency is low; 2. The pliers will bite the surface of the special-shaped nut. It will affect the appearance of cylindrical special-shaped nuts and reduce their service life.

Contents of the invention

The purpose of this utility model is to provide a dismounting tool that can easily disassemble and assemble the above-mentioned cylindrical special-shaped nut, and ensure that the surface of the special-shaped nut is not damaged.

A dismounting tool for special-shaped nuts described in the utility model includes a base, and the base is provided with a step groove that can be inserted into a cylindrical special-shaped nut, and two radially opposite screw holes are provided on the side wall of the base corresponding to the position of the step groove , the two screw holes are respectively fitted with a handle-type indexing pin through thread fit, the end of the handle-type indexing pin has a locking pin extending into the step groove, and the locking pin corresponds to the hole of the cylindrical special-shaped nut inserted into the step groove , can be snapped into the snap hole on the side wall of the special-shaped nut.

The tool for disassembling and assembling cylindrical special-shaped nuts described in the utility model, in the process of disassembling or assembling special-shaped nuts, the handles of the two handle-type indexing pins are first pulled outward and rotated to the fixed position, so that the locking pin Shrink out of the step groove; then put the step groove of the base of the disassembly tool on the outside of the cylindrical special-shaped nut, so that the special-shaped nut is inserted into the step groove of the base, and turn the handle of the handle-type indexing pin to reset it and drive it to lock The pin extends into the step groove and elastically resists the annular groove on the side wall of the special-shaped nut; then, rotate the base to make the locking pin slide along the annular groove on the outer wall of the cylindrical special-shaped nut. Under the action of elastic force, the locking pin can be inserted into the clamping hole, and the disassembly tool and the round special-shaped nut are locked. At this time, hold the handle of the handle-type indexing pin with both hands, turn the disassembly tool, driven by the locking pin, the cylindrical The special-shaped nut can be rotated with the dismounting tool, thereby completing the disassembly or assembly of the special-shaped nut. Its operation is simple, convenient, and efficient, and in the process of disassembly and assembly, the outer surface of the cylindrical special-shaped nut is completely free of force, and will not cause any damage to the outer surface of the special-shaped nut during the operation, which can ensure the appearance of the special-shaped nut. , and service life.

Description of drawings

Fig. 1 is the structural representation of cylindrical special-shaped nut of the present utility model;

Fig. 2 is a schematic diagram of the structure of the dismounting tool for special-shaped nuts of the present invention (internal structure is indicated by dotted lines).

Fig. 3 is a three-dimensional schematic diagram of a dismounting tool for special-shaped nuts of the present invention.

Detailed ways

As shown in Figure 2 and Figure 3, a disassembly tool for special-shaped nuts includes a cylindrical base 1, and the base 1 is provided with a stepped groove 11 that can be inserted into a cylindrical special-shaped nut (not shown in the figure), and the side of the base 1 The position of the wall corresponding to the step groove 11 is provided with two radially opposite screw holes, and the two screw holes are respectively fitted with a handle-type indexing pin 2 of the prior art through screw threads, and the end of the handle-type indexing pin 2 has an extension The locking pin 3 that enters the step groove 11, the locking pin 3 can be screwed on the handle-type indexing pin 2, the locking pin 3 corresponds to the clamping hole of the cylindrical special-shaped nut inserted into the step groove, and the locking pin 3 can be operated The indexing pin 2 expands and contracts along the radial direction of the base 1, and can be snapped into a hole on the side wall of the special-shaped nut. When disassembling the cylindrical special-shaped nut, put the disassembly tool on the outside of the cylindrical special-shaped nut, operate the indexing pin 2 to make the locking pin snap into the hole of the special-shaped nut, and then rotate the disassembly tool to drive the special-shaped nut to rotate , so that it is convenient to realize the tightening and loosening of special-shaped nuts, and realize rapid disassembly and assembly.

The bottom of the step groove can be provided with a limiting end face 11 , after the cylindrical special-shaped nut is inserted into the step groove 11 , its end face is offset against the limiting end face 11 , and the clamping hole corresponds to the locking pin 3 . Through this structural setting, when using the dismounting tool to disassemble the special-shaped nut, you only need to put the limit end face against the end face of the cylindrical special-shaped nut, so that the locking pin is located in the annular groove on the outer side of the special-shaped nut, and no additional Alignment between the annular groove and the locking pin makes the operation simpler and more convenient, and the locking pin 3 can quickly and accurately align with the clamping hole of the cylindrical special-shaped nut.

Claims (3)

1. A dismounting tool for special-shaped nuts, characterized in that: it includes a base, the base is provided with a step groove that can be inserted into a cylindrical special-shaped nut, and the side wall of the base is provided with two radially opposite screw holes at the position corresponding to the step groove , the two screw holes are respectively fitted with a handle-type indexing pin through thread fit, the end of the handle-type indexing pin has a locking pin extending into the step groove, and the locking pin corresponds to the hole of the cylindrical special-shaped nut inserted into the step groove , can be snapped into the snap hole on the side wall of the special-shaped nut. 2. The dismounting tool for special-shaped nuts according to claim 1, characterized in that: the bottom of the step groove can be provided with a limit end face, after the cylindrical special-shaped nut is inserted into the step groove, its end face and the limit end face, The locking holes correspond to the locking pins. 3. The tool for removing and assembling special-shaped nuts according to claim 1, wherein the locking pin is threadedly fixed on the handle-type indexing pin.