CN220060214U - Lock screw - Google Patents

Abstract

The utility model relates to the technical field of fasteners, in particular to a locking screw. The anti-loose screw comprises a screw and a washer; the screw comprises a head and a screw rod, the gasket is sleeved on the screw rod, and the gasket is of an arc-shaped structure. Through setting the packing ring into arc structure, in the use, the head of bolt can extrude the packing ring, makes the packing ring take place elastic deformation, makes and keeps a frictional force between screw and the screw contact surface, produces the moment of resistance to prevent that the screw from becoming flexible.

Description

Lock screw

Technical Field

The utility model relates to the technical field of fasteners, in particular to a locking screw.

Background

A flat washer of the prior art, is used to cushion the part between the piece to be connected and the nut. A generally flat metal ring is used to protect the surface of the connected component from being scratched by the nut and to disperse the pressure of the nut on the connected component.

But the flat gasket has no anti-loosening function, and is matched with a spring gasket to be used in an installation scene needing anti-loosening. The flat pad is matched with the spring pad in a use mode, and the purpose of bolt looseness prevention can be achieved, but the related parts are more, and the use is inconvenient.

Disclosure of Invention

The utility model aims to provide a locking screw which can solve the problem that an independent flat pad in the prior art does not have locking.

The utility model provides

A set screw comprising a screw and a washer;

the screw comprises a head and a screw rod, the gasket is sleeved on the screw rod, and the gasket is of an arc-shaped structure.

Preferably, the lower side of the head and the upper side of the gasket are both provided with anti-slip structures.

Preferably, the anti-slip structure comprises a plurality of evenly distributed anti-slip protrusions provided on the underside of the head.

Preferably, the anti-slip structure comprises a plurality of evenly distributed anti-slip grooves arranged on the upper side of the gasket.

Preferably, the height of the gasket is gradually reduced from the center position to the edge position.

Preferably, the screw comprises a polish rod section and a thread section, wherein the polish rod section is positioned between the head and the thread section;

the gasket is sleeved on the polish rod section, and the moving range of the gasket is the area between the head and the thread section.

Preferably, the diameter of the inner ring of the gasket is larger than that of the polish rod section and smaller than that of the thread section.

Preferably, the upper surface of the head is provided with a cross-shaped or straight groove.

The beneficial effects are that:

through setting the packing ring into arc structure, in the use, the head of bolt can extrude the packing ring, makes the packing ring take place elastic deformation, makes and keeps a frictional force between screw and the screw contact surface, produces the moment of resistance to prevent that the screw from becoming flexible.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a lockbolt according to an embodiment of the present utility model.

Reference numerals illustrate:

1: a head; 2: a screw; 3: and a gasket.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, a locking screw comprises a screw and a washer 3, wherein the screw comprises a head 1 and a screw rod 2, the washer 3 is sleeved on the screw rod 2, and the washer 3 is of an arc-shaped structure.

In the present embodiment, by arranging the washer 3 in an arc-shaped structure, the head 1 of the bolt presses the washer 3 during use, so that the washer 3 is elastically deformed, a friction force is maintained between the screw and the contact surface of the screw, and a resistance moment is generated, thereby preventing the screw from loosening.

Further, the underside of the head 1 and the upper side of the washer 3 are provided with anti-slip structures. Through the arrangement of the anti-slip structure, the friction resistance between the head 1 and the gasket 3 can be improved, and the anti-loosening performance is further improved.

The anti-slip structure comprises a plurality of evenly distributed anti-slip protrusions arranged on the underside of the head 1. The anti-slip structure comprises a plurality of evenly distributed anti-slip grooves provided on the upper side of the washer 3. Specifically, the anti-skidding protrusion and the anti-skidding groove are arranged oppositely, and through the arrangement of the anti-skidding protrusion and the anti-skidding groove, when the head 1 compresses the gasket 3, the anti-skidding protrusion can enter the anti-skidding groove, so that the connecting effect of the head 1 and the gasket 3 is improved.

The height of the gasket 3 gradually decreases from the center position to the edge position. The gasket 3 having such a structure can be elastically deformed when receiving the pressing force by the screw due to the existence of the inclined surface, and can provide a certain force to the screw, thereby increasing the friction force received by the screw.

The screw rod 2 comprises a polish rod section and a thread section, wherein the polish rod section is positioned between the head 1 and the thread section, the gasket 3 is sleeved on the polish rod section, and the moving range of the gasket 3 is the area between the head 1 and the thread section. That is, the washer 3 can move only in the polish rod section of the screw having such a structure, and the washer 3 can be prevented from falling off the screw. The step of installing the washer 3 is reduced during the use of the screw, reducing the assembly time of the screw.

Specifically, the diameter of the inner ring of the gasket 3 is larger than that of the polish rod section and smaller than that of the thread section. By adopting the washer 3 and the screw rod 2 with the sizes, the thread section can limit the sliding of the washer 3 and prevent the washer 3 from falling off. In addition, in the manufacturing process of the screw with the structure, the washer 3 is sleeved on the bar stock with the head 1, and then the thread section is machined.

The head 1, the screw 2, and the washer 3 are made of steel, and specifically, the head 1, the screw 2, and the washer 3 are made of 022Cr17Ni12Mo 2.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (2)

1. A locking screw, which is characterized by comprising a screw and a gasket;

the screw comprises a head and a screw rod, the gasket is sleeved on the screw rod, and the gasket is of an arc-shaped structure;

the anti-skid structure comprises a plurality of evenly distributed anti-skid bulges arranged on the lower side of the head part;

the anti-skid structure comprises a plurality of evenly distributed anti-skid grooves arranged on the upper side of the gasket;

the height of the gasket gradually decreases from the center position to the edge position;

the screw rod comprises a polish rod section and a thread section, and the polish rod section is positioned between the head and the thread section;

the gasket is sleeved on the polish rod section, and the moving range of the gasket is the area between the head and the thread section;

the diameter of the inner ring of the gasket is larger than that of the polish rod section and smaller than that of the thread section.

2. The locking screw as claimed in claim 1, wherein the upper surface of the head is provided with a cross-shaped or in-line groove.