Nut screwing tool having a function of preventing nut from falling off

Abstract

This invention discloses a nut tightening tool with a nut-preventing function, comprising a handle, a drive head, a baffle, a spring, a reversing knob, a reversing cam, a pin, a cover plate, and a screw. The tool further comprises a working component and a nut retaining ring. One end of the working component has a hexagonal countersunk hole for tightening the nut, and a groove around its outer side. The other end has a square countersunk hole connected to the drive head. The nut retaining ring is a circular retaining ring, specifically a spring retaining ring, installed in the groove on the outer side of the working component. In use, one square end of the working component is mounted on the drive head, and the other end is used to tighten the nut. When the nut detaches from the screw, the nut retaining ring holds the nut, pulling it out and preventing it from falling off.

Description

Technical Field

[0001] This invention relates to the technical field of manual nut tightening tools, specifically a nut tightening tool with a function to prevent the nut from falling off. Background Technology

[0002] When using a regular wrench to tighten nuts, if the nut comes off the screw, the wrench cannot hold the nut in place, and the nut will slip off directly, sometimes even into a gap, which is very inconvenient. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned technologies and provide a nut tightening tool with a function of preventing nut from falling off, which is reasonably designed, simple in structure, low in cost, easy to manufacture, and saves labor, time and effort when used.

[0004] The technical solution adopted in this invention is a nut tightening tool with a function to prevent nut from falling off, including a handle, a drive head, a baffle, a spring, a reversing knob, a reversing cam, a pin, a cover plate, and a screw. One end of the drive head is square, and the other end is cylindrical, with a ring of ratchet teeth. One end of the baffle engages with the ratchet teeth on the drive head, and the other end has a protruding cylinder. The baffle can rotate around this cylinder. A baffle is installed on each side of the drive head. The spring is installed on the outside of the baffle, and the baffle engages with the ratchet teeth through the spring's elasticity. The reversing knob has a countersunk hole in the middle, and a hexagonal through hole at the bottom of the countersunk hole. The reversing cam has a hexagonal boss on the upper part and a... A circular through hole is provided. The boss is mounted on the hexagonal through hole on the reversing knob and connected together by a pin. The reversing knob drives the reversing cam to rotate. The handle head has a cavity. The drive head, baffle, spring, reversing knob, reversing cam, and pin are installed in the cavity. The opening end of the cavity is connected to the drop screw by a cover plate to prevent internal parts from falling off. The feature is that it also includes a working part and a nut retaining ring. One end of the working part has a hexagonal countersunk hole for tightening the nut. The outer side of this side has a groove. The other end has a square countersunk hole connected to the drive head, specifically a sleeve. The nut retaining ring is a circular retaining ring, specifically a spring retaining ring, installed in the groove on the outer side of the working part.

[0005] This invention is reasonably designed, has a simple structure, is low in cost, easy to manufacture, and saves labor, time and effort when used. It is a nut tightening tool with the function of preventing the nut from falling off. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of the present invention.

[0007] Figure 2 This is a schematic diagram of the handle of the present invention.

[0008] Figure 3 This is a schematic diagram of the baffle structure of the present invention.

[0009] Figure 4 This is a schematic diagram of the reversing knob of the present invention.

[0010] Figure 5 This is a schematic diagram of the reversing cam of the present invention.

[0011] Figure 6 This is a schematic diagram of the structure of the working component of the present invention.

[0012] Figure 7 This is a schematic diagram of the drive head of the present invention.

[0013] The markings in the diagram are: 1. Handle, 2. Reversing knob, 3. Pin, 4. Screw, 5. Drive head, 6. Cover plate, 7. Working part, 8. Nut retaining ring, 9. Baffle plate, 10. Spring, 11. Reversing cam. Detailed Implementation

[0014] As shown in the figure, a nut tightening tool with a function to prevent nut from falling off includes a handle 1, a drive head 5, a baffle 9, a spring 10, a reversing knob 2, a reversing cam 11, a pin 3, a cover plate 6, and a screw 4. One end of the drive head 5 is square, used to drive the working part, and the other end is cylindrical with a ring of ratchet teeth. One end of the baffle 9 engages with the ratchet teeth on the drive head, and the other end has a protruding cylinder. The baffle 9 can rotate around this cylinder. A baffle 9 is installed on each side of the moving head 5. The spring 10 is installed on the outside of the baffle 9. The baffle 9 engages with the ratchet through the elastic force of the spring 10. The reversing knob 2 has a countersunk hole in the middle and a hexagonal through hole at the bottom of the countersunk hole. The reversing cam 11 has a hexagonal boss on the upper part and a circular through hole in the middle. The boss is installed on the hexagonal through hole on the reversing knob 2 and connected to it by a pin 3. The reversing knob 2 drives the reversing cam 11 to rotate. When the reversing knob 2 rotates to the left... When rotating, the reversing cam 11 pushes open the left side baffle 9, at which time the right side baffle 9 engages with the ratchet on the drive head 5, and the drive head 5 can rotate counterclockwise. When the reversing knob 2 rotates to the right, the reversing cam 11 pushes open the right side baffle 9, at which time the left side baffle 9 engages with the ratchet on the drive head 5, and the drive head 5 can rotate clockwise. The handle 1 has a cavity at its head, and the drive head 5, baffle 9, spring 10, reversing knob 2, reversing cam 11, and pin 3 are installed in the cavity. The cavity opening is connected to the screw 4 through the cover plate 6 to prevent internal parts from falling off. The feature is that it also includes a working part 7 and a nut retaining ring 8. One end of the working part 7 has a hexagonal countersunk hole for tightening the nut, and a groove is provided on the outside of this side. The other end has a square countersunk hole connected to the drive head 5, specifically a sleeve. The nut retaining ring 8 is a circular retaining ring, specifically a spring retaining ring, installed in the groove on the outside of the working part 7, and serves to fix the nut.

[0015] When in use, install one end of the working part 7 on the drive head 5 and screw the nut on the other end. When the nut comes off the screw, the nut retainer 8 locks the nut and pulls it out to prevent it from falling off.

Claims

1. A nut tightening tool with a function to prevent nut from falling off, comprising a handle, a drive head, a stop plate, a spring, a reversing knob, a reversing cam, a pin, a cover plate, and a screw, characterized in that... It also includes a working part and a nut retainer. One end of the working part has a hexagonal countersunk hole for tightening the nut, and a groove is provided on the outside of this side. The other end has a square countersunk hole for connecting to the drive head. The nut retainer is a circular retainer and is installed in the groove on the outside of the working part.

2. A nut tightening tool with anti-nut loosening function according to claim 1, characterized in that: The nut retaining ring is a spring retaining ring.

3. A nut tightening tool with anti-nut loosening function according to claim 1, characterized in that: The working part is a sleeve.

Images