CN201896839U - Fixing nut - Google Patents

Abstract

The utility model relates to a fixing nut. The fixing nut comprises a nut body, wherein the nut body comprises a threaded hole section which is axially arranged; a multifunctional groove is formed on a hole wall of the threaded hole section; the multifunctional groove axially extends along the threaded hole section; and the multifunctional groove penetrates through the threaded hole section. The fixing nut provided by the utility model has the advantage that screw sliding is not easy to occur during disassembly, and solves the problems of screw sliding and inconvenient lubrication caused by such impurities as rust and the like, when the existing nut is matched with a bolt.

Description

fixing nut

technical field

The utility model relates to a fastener, in particular to a fixing nut.

Background technique

As a kind of fastener and connecting piece, nut is used very widely, and it is usually used in conjunction with bolts. In the patent literature of CN2050901U, the name is called "half silk nut" and the Chinese patent announcement number discloses a kind of nut. Its thread It is connected as a whole. A light hole coaxial with the threaded hole is provided at the end where the nut is connected with the connected parts, and a refueling hole connected to the outside of the nut is opened on the light hole. The nut of this patent is in use. It has the following disadvantages: if the threads of the bolts used in conjunction with them are rusted or have impurities, it will be difficult to disassemble and easy to slip. Although oil can be added to the light hole through the oil hole, the lubricating oil cannot The thread is well lubricated, and the self-locking performance is not good, especially when it is used in conjunction with the front axle of the car. In order to achieve sufficient locking force, the thread will be designed as a fine thread, and the phenomenon of slipping is more likely to occur, causing the nut and the scrapping of the wheel axle.

Contents of the invention

The utility model provides a fixed nut which is not easy to slip when being disassembled and assembled, and solves the problem of slipping caused by sundries such as rust and the like when the existing nut is used in conjunction with the bolt and the problem of inconvenient oiling and lubrication.

The above technical problems are solved by the following technical solutions: a fixed nut, including a nut body, the nut body includes a threaded hole section, the hole wall of the threaded hole section is provided with a multifunctional groove, and the multifunctional groove is The threaded hole section extends axially, and the multifunctional groove runs through the threaded hole section. "Threaded hole section" refers to the section on the nut body that is provided with threads. By setting up a multifunctional groove on the threaded wall of the threaded hole section of the fixed nut, and the multifunctional groove runs through the entire threaded hole section, if the thread is rusted or damaged In the process of screwing the nut, rust and other debris will be squeezed into the multi-function groove, and will not be stuck between the threads of the nut and the bolt, which will affect the movement of the thread according to the normal trajectory, resulting in slippage. If the thread phenomenon occurs, before screwing the nut, you can drop some lubricating oil in the multi-function groove. When the nut is screwed on the bolt, the excess lubricating oil will be stored in the multi-function groove to play a long-lasting lubrication function. Even if the threads get rusted after a long time, as long as the threads are slightly staggered, the lubricating oil stored in the multi-function tank can lubricate the threads, so that the threads can be unscrewed easily without slipping. The multi-functional groove breaks the continuity of the thread, so that the nut is not easy to loosen, and the locking function will be stronger.

Preferably, there are three multifunctional grooves, which are evenly distributed on the hole wall of the threaded hole section. When the thread is rusted or there are sundries on it, just rotate the nut at a small angle, that is, no more than 60 degrees, and the rust and other sundries can be discharged into the multi-function groove. The angle of rotation required to enter the multi-function groove will be larger than the angle required for uniform distribution, that is, the function of the anti-slip wire is not evenly distributed. If the number of multi-function grooves is too large, the locking function of the nut will be reduced. Generally 3 to 4 are more appropriate.

Preferably, the cross section of the multifunctional groove is triangular or trapezoidal. When the nut is screwed on the bolt, the contact line between the multi-function groove and the thread on the bolt is an oblique line. When turning, the edge of the multi-function groove has a good scraping effect on the rust and sundries on the thread, making the distance between the nut and the bolt The space is more difficult to slip.

As a preference, the outer surface of the nut body is provided with a guide area, a working area, and a locking area in sequence in the axial direction, and the cross-sectional areas of the guiding area, the operating area, and the locking area become larger in turn, and the operating area is Regular hexagonal prism. The hexagon is more general, and the fixing nut can be screwed without special tools.

Preferably, the guide area is a flat spherical crown, the large bottom surface of the guide area is connected to the working area, and the diameter of the large bottom surface is the same as the diameter of the inscribed circle of the cross section of the working area. "Large bottom surface" refers to the bottom surface with the larger diameter of the guide area. When the nut is used in a narrow space, it is generally necessary to use a ring wrench or a socket wrench to tighten the nut, and the eyes cannot see whether it is aligned. At this time This guide area can make it easier for the wrench to be stuck on the working area of the fixing nut to work on the fixing nut.

Preferably, the locking area is a cylinder, and the diameter of the cylinder is larger than the diameter of the circumscribed circle of the cross section of the working area. The contact surface between the fixing nut and the object to be connected is designed to be larger, so that it is not easy to loosen. The advantage of designing it as a circle is that it is easy to process, and the area of the circle is the largest when the radius of rotation is the same.

Preferably, the thread of the threaded hole segment is a fine pitch thread. The locking effect of fine thread is good.

The utility model has the following advantages. By setting up a multifunctional groove on the thread of the fixing nut, the edge of the multifunctional groove can scrape off the rust and other sundries on the thread of the fastener used in conjunction with the fixing nut, and accommodate In the multi-function groove, lubricating oil can also be stored in the multi-function groove when the nut is assembled, and the thread can be lubricated when the screw thread is screwed, so that the fixed nut is not easy to produce the phenomenon of slipping when the nut is used. A few multi-functional grooves can be set up to make the utility model, so it is easy to make, simple in structure, low in manufacturing cost and good in versatility.

Description of drawings

Fig. 1 is a schematic top view of the utility model.

FIG. 2 is a schematic view along the direction A of FIG. 1 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Referring to Fig. 1, a kind of fixing nut comprises nut body 1, is provided with three multifunctional grooves 2 on the hole wall of threaded hole section on nut body 1, and multifunctional groove 2 extends along the axial direction of threaded hole section, multifunctional The groove 2 runs through the entire threaded hole section, and the multifunctional grooves 2 are evenly distributed on the hole wall of the threaded hole section, that is, the angle between the multifunctional grooves 2 is 120 degrees, and the thread of the threaded hole section is a fine thread. The middle multifunctional groove 2 is a "V" groove, and of course it is designed as a trapezoid and has a good effect of scraping off sundries such as rust, but if it is designed as a rectangle, the effect is not good.

Referring to Figure 2, the outer surface of the nut body is axially provided with a guide area 3, a working area 4, and a locking area 5, and the cross-sectional areas of the guiding area 3, the operating area 4, and the locking area 5 are sequentially arranged. Get bigger, the locking zone 5 that is located at the lower end is the cylinder that diameter is 21 millimeters, and the length of cylinder is 6 millimeters, and the lower end face of cylinder is a plane, and the lower end face of cylinder and side are arc transition, and circle The radius of the arc is 0.2 millimeters, and the upper end of the locking area 5 is connected with the working area 4 of an integral structure. degree, the work area 4 is a regular hexagonal prism, the height of the hexagonal prism is 5.5 millimeters, the distance between the two opposite sides of the hexagonal prism is 15 millimeters, and the upper end surface of the work area 4 is connected with a guide area 3 of an integrated structure, and the guide District 3 is a flat spherical crown, and the height of leading region 3 is 2.5 millimeters, and the diameter of the lower end face of leading region 3 is 15 millimeters, and the diameter of the upper end face of leading region 3 is 10 millimeters.

When in use, for the convenience of taking off next time, smear a small amount of lubricating oil on the inwall of the threaded hole section of the nut body 1, and the excess lubricating oil will be scraped into the multifunctional groove 2, and the lubricating oil stored here can When the fixing nut is taken off next time, the screw thread can be well lubricated, so that the effect of the anti-skid wire will be better.

Claims (10)

1. A fixed nut, comprising a nut body, is characterized in that, said nut body comprises a threaded hole section provided with an axis, and the hole wall of said threaded hole section is provided with a multifunctional groove, and said multifunctional groove is arranged along said The axial extension of the threaded hole segment, the multifunctional groove runs through the threaded hole segment. 2. The fixing nut according to claim 1, wherein there are three multifunctional grooves, which are evenly distributed on the hole wall of the threaded hole section. 3. The fixing nut according to claim 1 or 2, characterized in that, the cross section of the multifunctional groove is triangular or trapezoidal. 4. The fixing nut according to claim 3, characterized in that, the outer surface of the nut body is axially provided with a guide area, an operating area, and a locking area, and the guide area, the operating area, and the locking area are three The cross-sectional area becomes larger successively, and the working area is a regular hexagonal prism. 5. The fixing nut according to claim 4, characterized in that, the guide area is a flat spherical crown, the large bottom surface of the guide area is connected with the working area, and the diameter of the large bottom surface is the same as that of the working area. The diameter of the inscribed circle of the cross-section of the zone is the same. 6 . The fixing nut according to claim 5 , wherein the locking area is a cylinder, and the diameter of the cylinder is larger than the diameter of the circumscribed circle of the cross section of the working area. 7. The fixing nut according to claim 1 or 2, characterized in that, the thread of the threaded hole section is a fine pitch thread. 8. The fixed nut according to claim 1 or 2, characterized in that, the outer surface of the nut body is axially provided with a guide area, a working area, and a locking area, and the guiding area, the operating area, and the locking area The cross-sectional areas of the three become larger sequentially, and the working area is a regular hexagonal prism. 9. The fixing nut according to claim 8, characterized in that, the guide area is a flat spherical crown, the large bottom surface of the guide area is connected with the working area, and the diameter of the large bottom surface is the same as that of the working area. The diameter of the inscribed circle of the cross-section of the zone is the same. 10 . The fixing nut according to claim 9 , wherein the locking area is a cylinder, and the diameter of the cylinder is larger than the diameter of the circumscribed circle of the cross section of the working area. 11 .

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