CN210660969U

CN210660969U - Immobile screw assembly

Info

Publication number: CN210660969U
Application number: CN201921670113.7U
Authority: CN
Inventors: 常卫国
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-02
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses an immovable screw assembly, which comprises a first hexagonal screw, a second hexagonal screw, a conical plug, a hexagonal sleeve, an inner snap spring, a first workpiece and a second workpiece; a through hole is formed in the second hexagonal screw, the top end of the screw rod of the second hexagonal screw is in an inner conical shape, and the head of the top end of the screw rod of the second hexagonal screw is cut in equal parts; the conical plug is in a convex cone shape and is arranged in the inner cone shape at the top end of the second hexagonal screw rod; a groove is formed in the hexagonal head of the first hexagonal screw, and the first hexagonal screw penetrates through a through hole in the second hexagonal screw and is connected with the conical plug; the hexagonal sleeve is sleeved on the outer surfaces of the heads of the first hexagonal screw and the second hexagonal screw; the inner clamp spring is sleeved in the groove at the head of the first hexagonal screw. The utility model discloses can effectually fix the screw and prevent the not hard up hidden danger of screw secondary, simple structure, the practicality is extremely strong, and the popularization nature is high.

Description

Immobile screw assembly

Technical Field

The utility model relates to a mechanical fastener technical field, concretely relates to motionless screw subassembly.

Background

Currently, a stationary screw assembly has been widely used for linking and fixing workpieces (objects) in industrial production and life. In production work and daily life, workpieces (objects) which are connected and fixed by screws often loosen due to vibration and the like after being used for a long time. Some critical parts, which must be linked and fixed with screws, will cause unnecessary loss and trouble, even serious personnel and equipment safety accidents, in case of screw loosening.

The existing general method for preventing the screw from loosening is to fasten a screw which is used for linking and fixing a workpiece at a hexagonal position of the head of the screw by using a thin iron wire and the screw is fastened in the same direction, and although the method prevents the fixed screw from loosening to a certain extent, the method is 'rough and crude', extremely inelegant in appearance and has the hidden danger of secondary loosening greatly.

Disclosure of Invention

The utility model provides an immovable screw assembly, which aims at the problems, and comprises a first hexagonal screw, a second hexagonal screw, a conical plug, a hexagonal sleeve, an inner snap spring, a first workpiece and a second workpiece; a through hole is formed in the second hexagonal screw, the top end of the screw rod of the second hexagonal screw is in an inner cone shape, and the head of the top end of the screw rod of the second hexagonal screw is cut in equal parts; the conical plug is in a convex cone shape and is arranged in the inner cone shape at the top end of the second hexagonal screw rod; the hexagonal head of the first hexagonal screw is provided with a groove, and the first hexagonal screw penetrates through a through hole in the second hexagonal screw and is connected with the conical plug; the hexagonal sleeve is sleeved on the outer surfaces of the heads of the first hexagonal screw and the second hexagonal screw; the inner clamp spring is sleeved in a groove at the head of the first hexagonal screw; the first workpiece and the second workpiece are fixedly connected through a fixed screw assembly.

The first hexagonal screw is a tapping screw, and the hexagonal heads of the first hexagonal screw and the second hexagonal screw are the same in size.

The radius of the conical plug is larger than that of the inner cone at the top end of the second hexagonal screw rod, and the conical surface angles of the conical plug and the inner cone at the top ends of the second hexagonal screw rods are both 20 degrees.

The first hexagonal screw, the second hexagonal screw, the hexagonal sleeve and the inner clamp spring are standard parts.

The utility model has the advantages that:

the utility model discloses be equipped with the through-hole in second hexagonal screw inside, set up the inner conical surface and cut this part equally to second hexagonal screw rod top, make first hexagonal screw run through second hexagonal screw internal connection toper end cap, can stimulate the toper end cap when twisting first hexagonal screw, make the position that second hexagonal screw rod top head equally cuts be umbelliform and disperse, thus wedge in the second work piece that is fixed deeply inside, reach the effect of fixing first work piece and second work piece; fixing the heads of the first hexagonal screw and the second hexagonal screw through the hexagonal sleeve, so that the positions of the first hexagonal screw and the second hexagonal screw are relatively fixed; the hexagonal sleeve is fixed through the inner snap spring, so that the hexagonal sleeve cannot move up and down, and the hidden danger of secondary loosening of the screw is effectively prevented; the fixed screw assembly is simple in structure, extremely strong in practicability and high in popularization.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

Fig. 1 is a schematic view of the installation structure of the present invention;

reference numerals:

the bolt comprises a first hexagonal bolt 1, a second hexagonal bolt 2, a conical plug 3, a hexagonal sleeve 4, an inner snap spring 5, a first workpiece 6, a second workpiece 7 and a through hole 21.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, as shown in fig. 1, an immobile screw assembly comprises a first hexagonal screw 1, a second hexagonal screw 2, a tapered plug 3, a hexagonal sleeve 4, an inner snap spring 5, a first workpiece 6 and a second workpiece 7; a through hole 21 is formed in the second hexagonal screw 2, the top end of the screw rod of the second hexagonal screw 2 is in an inner cone shape, and the head of the top end of the screw rod of the second hexagonal screw 2 is cut in equal parts; the conical plug 3 is in a convex cone shape, the conical plug 3 is arranged in the inner cone shape at the top end of the screw rod of the second hexagonal screw 2, the radius of the conical plug 3 is larger than that of the inner cone shape at the top end of the screw rod of the second hexagonal screw 2, and the conical surface angles of the conical plug 3 and the inner cone shape at the top end of the screw rod of the second hexagonal screw 2 are both 20 degrees; the first hexagonal screw 1 is a tapping screw, a groove is formed in the hexagonal head of the first hexagonal screw 1, the first hexagonal screw 1 penetrates through a through hole 21 in the second hexagonal screw 2 to be connected with the conical plug 3, and the hexagonal heads of the first hexagonal screw 1 and the second hexagonal screw 2 are the same in size; the hexagonal sleeve 4 is sleeved on the outer surfaces of the heads of the first hexagonal screw 1 and the second hexagonal screw 2; the inner clamp spring 5 is arranged in a groove in the hexagonal head of the first hexagonal screw 1; the first workpiece 6 and the second workpiece 7 are fixedly connected through a fixed screw assembly; the first hexagonal screw 1, the second hexagonal screw 2, the hexagonal sleeve 4 and the inner snap spring 5 are standard parts.

The utility model discloses a working method:

when in use, firstly, the bottom hole of a second workpiece 7 to be fixed is deeply threaded by 5 to 10mm, and a fixed screw assembly is integrally screwed into the bottom holes of the first workpiece 6 and the second workpiece 7; the second hexagonal screw 2 is screwed with force, and then the conical plug 3 is pulled to move by screwing the first hexagonal screw 1, so that the positions of the heads of the screw rods of the second hexagonal screw 2, which are cut equally, are diverged in an umbrella shape, and thus the second hexagonal screw is deeply wedged into the fixed second workpiece 7; secondly, fixedly sleeving the hexagonal sleeve 4 on the first hexagonal screw 1 and the second hexagonal screw; finally, the inner clamp spring 5 is expanded by the inner clamp caliper, so that the inner clamp spring 5 is fixedly clamped in the groove of the hexagonal head of the first hexagonal screw 1, the hexagonal sleeve 4 is prevented from moving up and down, and the effect of fixing the screw component is achieved.

The utility model discloses be equipped with through-hole 21 in second hexagonal screw 2 inside, set up the inner conical surface and cut this part equally to second hexagonal screw rod top, make first hexagonal screw 1 run through second hexagonal screw 2 internal connection toper end cap 3, can stimulate toper end cap 3 when twisting first hexagonal screw 1, make the position that second hexagonal screw 2 screw rod top head equally cut be umbelliform and disperse, thereby wedge in the inside of fixed second work piece 7 deeply, reach the effect of fixed first work piece 6 and second work piece 7; fixing the heads of the first hexagonal screw 1 and the second hexagonal screw 2 through the hexagonal sleeve 4, so that the positions of the first hexagonal screw 1 and the second hexagonal screw 2 are relatively fixed; a groove is formed in the hexagonal head of the first hexagonal screw 1, an inner clamp spring 5 is arranged on the groove, and the hexagonal sleeve 4 is fixed through the inner clamp spring 5, so that the hexagonal sleeve 4 cannot move up and down, and the hidden trouble of secondary loosening of the screw is effectively prevented; the fixed screw assembly is simple in structure, extremely strong in practicability and high in popularization.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The fixed screw component is characterized by comprising a first hexagonal screw (1), a second hexagonal screw (2), a conical plug (3), a hexagonal sleeve (4), an inner clamp spring (5), a first workpiece (6) and a second workpiece (7); a through hole (21) is formed in the second hexagonal screw (2), the top end of a screw rod of the second hexagonal screw (2) is in an inner conical shape, and the head of the top end of the screw rod of the second hexagonal screw (2) is cut in equal parts; the conical plug (3) is in a convex cone shape, and the conical plug (3) is arranged in the inner cone shape at the top end of the screw rod of the second hexagonal screw (2); a groove is formed in the hexagonal head of the first hexagonal screw (1), and the first hexagonal screw (1) penetrates through a through hole (21) in the second hexagonal screw (2) and is connected with the conical plug (3); the hexagonal sleeve (4) is sleeved on the outer surfaces of the heads of the first hexagonal bolt (1) and the second hexagonal bolt (2); the inner clamp spring (5) is sleeved in a groove in the head of the first hexagonal screw (1); the first workpiece (6) and the second workpiece (7) are fixedly connected through a fixed screw assembly.

2. The stationary screw assembly according to claim 1, characterized in that the first hexagonal screw (1) is a thread-tapping screw, the hexagonal heads of the first and second hexagonal screws (1, 2) being of the same size.

3. The stationary screw assembly according to claim 1, characterized in that the radius of the conical plug (3) is larger than the radius of the internal taper at the screw tip of the second hexagonal screw (2), and the conical angles of the conical plugs (3) and the internal taper at the screw tips of the second hexagonal screw (2) are both 20 degrees.

4. The stationary screw assembly according to claim 1, characterized in that the first hexagonal screw (1), the second hexagonal screw (2), the hexagonal sleeve (4) and the internal circlip (5) are all standard pieces.