CN210978149U

CN210978149U - One-rod same-direction double-thread anti-skid screw

Info

Publication number: CN210978149U
Application number: CN201921772286.XU
Authority: CN
Inventors: 黄开元
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-10
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a one-pole syntropy double thread anti-skidding screw, include: 6 parts such as a bolt, a common gasket, a common annular elastic washer, a main nut, a special annular elastic washer, an auxiliary nut and the like. The screw achieves the effect of preventing natural loosening through the mutual matching and restriction of the 6 components. The utility model discloses anti-skidding screw, simple structure conceives tightly, has solved current anti-skidding screw effect not good and the complicated scheduling problem of preparation technology.

Description

One-rod same-direction double-thread anti-skid screw

Technical Field

The utility model relates to a worker technical field of bolt, purpose-made annular elastic washer, nut specifically is a pole syntropy double thread anti-skidding screw.

Background

At present, the connection between the components or the fastening between the equipment parts is usually accomplished by screws. Due to the complexity and the particularity of the use environment, the screw cap can be loosened or fall off after a long time, so that the precision of high-precision equipment is reduced, the equipment is damaged, and even accidents are caused. Most of the existing common anti-skid screws adopt the friction surfaces arranged on the side surfaces of the screw caps to increase friction with fixed objects so as to prevent the screws from loosening or falling off, but the effect is not good generally, certain destructiveness and potential safety hazards exist, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming current screw technical structure defect, providing a simple structure, the principle is succinct, think tightly, extensive applicability, safe and reliable's anti-drop screw, solved the not good problem of current anti-slip screw effect.

In order to solve the technical problem, the utility model discloses a technical scheme be: a same-direction double-thread anti-skid screw comprises: bolts, common gaskets, common annular elastic washers, main nuts, special annular elastic washers and auxiliary nuts; the bolt is composed of four parts: the screw is of a screw double-thread structure, the thread pitch on the large screw is different from that on the small screw, the screwing directions are the same, the outer diameter of the thread of the small screw is smaller than that of the thread of the large screw; the main nut is the same as a common nut in shape except one end face and length, and a cam is arranged on one end face; the special annular elastic washer is basically the same as a common annular elastic washer, and the difference is that a bulge is outwards arranged at the outer edge of the section of the washer; the length, the tooth pitch and the inner diameter of the auxiliary nut are different from those of the main nut, and other appearance structures are equal to those of the main nut.

In a preferred embodiment of the present invention, the bolt has a large screw portion with the same outer diameter as that of the non-screw portion, a small screw portion with an outer diameter smaller than that of the large screw portion, a large and a small screw portion with different pitches, and a large and a small screw portion with the same direction.

In a preferred embodiment of the present invention, the main nut internal thread matches with the large screw external thread of the bolt, and a cam is provided on an end surface of the main nut.

In a preferred embodiment of the present invention, the special annular elastic washer has the same rotation direction as the general washer, and plays a supporting role in the circular motion to transmit the reverse motion of the main nut and the auxiliary nut.

In a preferred embodiment of the present invention, the internal thread of the secondary nut matches with the external thread of the small screw rod of the bolt, the direction of rotation is the same as that of the main nut, and the other external structure of the secondary nut is the same as that of the main nut.

Compared with the prior screw technology structure, the utility model discloses a unique effect as follows: after the main nut is screwed down, a specially-made annular elastic washer is sleeved on the main nut, an auxiliary nut is added, the end face of the specially-made annular elastic washer is embedded into a cam of the main nut and the auxiliary nut, when the main nut is loosened, the main nut cam pushes the specially-made annular elastic washer to move reversely, and the other end of the specially-made annular elastic washer is also embedded into the auxiliary nut cam, so that the specially-made annular elastic washer transmits the thrust generated by the movement of the main nut and pushes the auxiliary nut to rotate in the same direction along with the main nut, but because the tooth pitch of the threads of the main nut and the auxiliary nut is different, the axial displacement generated by the annular movement of the main nut and the auxiliary nut in the same angle is different, and thus, under the action of the threads of the bolts, mutual restriction force is generated, and the; vice versa, when vice nut produces the motion of loosening, its motion process is the same with limited principle to reach and prevent that the nut from loosening the effect. When the screw is disassembled, the embedding blocking of the special annular elastic washer is firstly released, the auxiliary screw cap is loosened, the special annular elastic washer is taken out, and the rest can be disassembled as the common screw is disassembled. The utility model discloses the principle is simple and clear, simple structure, and the design is tight, convenient operation, and the practicality is strong, and fail safe nature is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

FIG. 1 is an assembly axial view of a single-screw co-rotating double-thread anti-skid screw according to the present invention;

FIG. 2 is an axial view of a bolt in the one-rod co-directional double-thread anti-slip screw according to the present invention;

FIG. 3 is an axial view of a washer of the double-thread anti-slip screw with one screw rod in the same direction;

fig. 4 is an axial view of the nut of the anti-skid screw with two threads in the same direction.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a screw with two threads in the same direction, comprising: the bolt comprises a bolt 1, a common gasket 2, a common annular elastic washer 3, a main nut 4, a special annular elastic washer 5 and an auxiliary nut 6; the bolt 1 is similar to a common bolt in shape, the front end of the common bolt is additionally provided with a section of small screw rod 14, the screw rod 13 with larger external diameter of threads is small, the screwing directions are the same, and the tooth pitches are different; the common gasket 2 and the common annular elastic washer 3 are common gaskets and washers, and the inner diameters of the common gaskets and the common annular elastic washer are matched with the outer diameter of the wire-free part 12 of the bolt 1; the end face of the main nut 4 is divided into an end face A42 and an end face B44, the end face A42 of the main nut 4 is the same as the end face B64 of the auxiliary nut 6 and is of a plane structure, the end face B44 of the main nut 4 is the same as the end face A62 of the auxiliary nut 6 and is provided with a cam, the cam is matched with the end face of the break-off part of the specially-made annular elastic washer 5, and the internal thread 43 of the main nut 4 is matched with the external thread of the large screw rod 13 of the bolt 1; the special annular elastic washer 5 is similar to the common annular elastic washer 3 in structural form, but has a plurality of outer edge convex parts 52 on the cross section, and the end surfaces of the disconnected parts are matched with the cams of the main nut and the auxiliary nut; the end face of the auxiliary nut 6 is divided into an A end face 62 and a B end face 64, the B end face 64 of the auxiliary nut 6 is the same as the A end face 42 of the main nut 4, a cam of the auxiliary nut is matched with the end face of the broken part of the specially-made annular elastic washer 5, and an inner thread 63 of the auxiliary nut is matched with the small screw rod 14 of the bolt;

specifically, the internal thread 43 of the main nut 4 is matched with the external thread 13 of the large screw rod of the bolt 1, the main nut 4 is matched with the bolt 1 together to fasten objects, and the B end face 44 of the main nut 4 is provided with a cam matched with the end face of the break-off part of the special annular elastic washer 5; the end surface of the broken part of the special annular elastic washer 5 is matched with the cam of the main nut and the auxiliary nut to transmit the acting force of the main nut and the auxiliary nut; the internal thread 63 of the secondary nut 6 matches the external thread of the small spindle 14 of the bolt 1. The main and auxiliary nuts are matched with the bolt 1 to limit the specially-made annular elastic washer 5. When the main and auxiliary nuts do circular motion on the bolt 1, the main and auxiliary nuts do circular motion at the same angle through the conduction of the specially-made annular elastic washer 5, but the generated axial motion distances are different due to different thread pitches, and the internal threads of the main and auxiliary nuts are engaged through the threads of the bolt, so that the main and auxiliary nuts cannot retreat, and the effect of preventing loosening is achieved. When the special annular elastic washer is required to be disassembled, the effect of embedding the special annular elastic washer into the main nut cam and the auxiliary nut cam is firstly released, the auxiliary nut 6 is loosened, the special annular elastic washer 5 is taken out, and the rest can be disassembled like the common screw. The principle is simple, the structure is simple, the conception is strict, the operation is convenient, special tools are not needed, the practicability is high, and the safety and the reliability are high.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. A pole syntropy double thread antiskid screw, its characterized in that includes: bolts, common gaskets, common annular elastic washers, main nuts, special annular elastic washers and auxiliary nuts; the bolt is composed of four parts: the screw head, the part without the screw rod, the large screw rod part and the small screw rod part, wherein the thread pitch on the large screw rod is different from that on the small screw rod, but the screw direction is the same, and the outer diameter of the thread of the small screw rod is smaller than that of the thread of the large screw rod, and the screw head is of a one-screw double-thread structure; the shape of the main nut is the same as that of a common nut except for one end face and the length, and a cam is arranged on one end face; the special annular elastic washer is basically the same as a common annular elastic washer, and the difference is that a bulge is outwards arranged at the outer edge of the section of the washer; the length, the tooth pitch and the inner diameter of the auxiliary nut are different from those of the main nut, and the external structure of the auxiliary nut is equal to that of the main nut.

2. A one-rod co-rotating double-thread anti-slip screw as defined in claim 1, wherein: the bolt is composed of four parts: the screw head, the part without the screw rod, the large screw rod part and the small screw rod part, the thread pitch on the large screw rod is different from that on the small screw rod, the screwing directions are the same, and the outer diameter of the thread of the small screw rod is smaller than that of the thread of the large screw rod, and the screw head is of a one-screw double-thread structure.

3. A one-rod co-rotating double-thread anti-slip screw as defined in claim 1, wherein: the screw thread turning directions of the large and small screw rods in the bolt structure are the same.

4. A one-rod co-rotating double-thread anti-slip screw as defined in claim 1, wherein: the thread pitch of the threads of the large and small screw rods in the bolt structure is different.

5. A one-rod co-rotating double-thread anti-slip screw as defined in claim 1, wherein: a cam is arranged on one end face of the main nut.

6. A one-rod co-rotating double-thread anti-slip screw as defined in claim 1, wherein: the outer edge of the section of the special annular elastic washer is provided with a bulge outwards, and the rest shape and structure are basically the same as those of the common annular elastic washer.

7. A one-rod co-rotating double-thread anti-slip screw as defined in claim 1, wherein: the length and the pitch of the auxiliary nut are different from those of the main nut, the thread turning direction is the same as that of the main nut, the appearance of the auxiliary nut is similar to that of the main nut, and the inner diameter of the thread is smaller than that of the main nut.