CN210440387U

CN210440387U - Anti-drop rail bolt

Info

Publication number: CN210440387U
Application number: CN201921416860.8U
Authority: CN
Inventors: 沈峰
Original assignee: Haiyan Shengxin Standard Parts Co Ltd
Current assignee: Haiyan Shengxin Standard Parts Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-05-01
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses an anti-drop rail bolt, including bolt body and magnetic ring, the bolt body includes screw rod and the spiral shell head that is located screw rod one end, the spiral shell head includes circle head section and hexagonal section, the hexagonal section is located between screw rod and the circle head section, a side plane that the circle head section is close to hexagonal section is the inclined plane, the magnetic ring is fixed on the inclined plane, through setting up the spiral shell head into hexagonal section and circular head section two parts, utilizes the magnetic attraction of the magnetic ring that sets up in the circle head section and assembly part, makes and tightly laminate between the plane of hexagonal section and the assembly part, prevents that the bolt from dropping; the protective sleeve is covered outside the magnetic ring, so that impurities such as dust, rainwater and the like are prevented from polluting or corroding the magnetic ring; through set up the inclined plane on the button head section and set up the arc transition on annular main part, make things convenient for the rainwater to drop, prevent that the rainwater from hoarding up on the spiral shell is overhead.

Description

Anti-drop rail bolt

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of bolt, especially a technical field of anti-drop rail bolt.

[ background of the invention ]

When the bolt used on the existing rail is used, one end with a round head faces downwards, and one end with threads faces upwards, so that when a nut is not sleeved on the bolt, the bolt can easily fall out of an installation hole, and inconvenience is brought to installation.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, provide an anti-drop rail bolt, can prevent that the bolt from dropping before the screw in nut.

In order to achieve the above object, the utility model provides an anti-drop rail bolt, including bolt body and magnetic ring, bolt body includes the screw rod and is located the spiral shell head of screw rod one end, the spiral shell head includes round head section and hexagonal section, the hexagonal section is located between screw rod and the round head section, a side plane that the round head section is close to the hexagonal section is the inclined plane, the magnetic ring is fixed on the inclined plane.

Preferably, the screw comprises a polished rod section without external thread and a threaded section with external thread, and the polished rod section is positioned at one side close to the screw head.

Preferably, a guide section is further arranged at one end of the threaded section, which is far away from the light rod section.

Preferably, the included angle between the inclined plane and the horizontal plane is 15-45 degrees.

Preferably, one side of the round head section, which is close to the hexagonal section, is provided with a first annular groove, the magnetic ring is fixed in the first annular groove, the magnetic ring housing is provided with a protective sleeve, the protective sleeve comprises an annular main body and annular plugs which are respectively positioned on the bottom surfaces of an inner circle and an outer circle of the annular main body, one side of the first annular groove, which is close to and far away from the axis, is respectively provided with a second annular groove which is matched with the annular plugs, the inner wall of the second annular groove is also provided with a third annular groove, and an elastic rubber ring is fixed on the third annular groove.

Preferably, an arc-shaped transition is arranged between one end of the annular main body positioned at the upper side and the inclined plane.

The utility model has the advantages that: the utility model sets the screw head into a hexagonal section and a round head section, and utilizes the magnetic attraction between the magnetic ring arranged in the round head section and the assembly part to tightly attach the plane of the hexagonal section and the assembly part, thereby preventing the bolt from falling; the protective sleeve is covered outside the magnetic ring, so that impurities such as dust, rainwater and the like are prevented from polluting or corroding the magnetic ring; through set up the inclined plane on the button head section and set up the arc transition on annular main part, make things convenient for the rainwater to drop, prevent that the rainwater from hoarding up on the spiral shell is overhead.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a front view of an anti-drop rail bolt according to the present invention;

fig. 2 is an assembly schematic view of an anti-drop rail bolt according to the present invention;

FIG. 3 is an enlarged partial schematic view at A of FIG. 3;

fig. 4 is a front sectional view of the screw head of the anti-drop rail bolt of the present invention.

In the figure: 1-bolt body, 11-screw rod, 111-thread section, 112-polished rod section, 113-guide section, 12-screw head, 121-round head section, 1211-first annular groove, 1212-second annular groove, 1213-third annular groove, 122-hexagonal section, 2-protective sleeve, 21-annular main body, 211-arc transition, 22-annular plug, 3-elastic rubber ring, 4-magnetic ring and 5-assembly part.

[ detailed description ] embodiments

Referring to fig. 1 to 4, the utility model relates to an anti-drop rail bolt, including bolt body 1 and magnetic ring 4, bolt body 1 includes screw rod 11 and screw head 12 that is located screw rod 11 one end, screw head 12 includes round head section 121 and hexagonal section 122, hexagonal section 122 is located between screw rod 11 and round head section 121, a side plane that round head section 121 is close to hexagonal section 122 is the inclined plane, magnetic ring 4 fixes on the inclined plane, screw rod 11 includes polished rod section 112 that does not have the external screw thread and screw thread section 111 that has the external screw thread, polished rod section 112 is located the side that is close to screw head 12, the one end that screw thread section 111 is kept away from polished rod section 112 still is equipped with guide section 113, the contained angle between inclined plane and horizontal plane is 15 ~ 45 °, one side that round head section 121 is close to hexagonal section 122 is equipped with first annular groove 1211, magnetic ring 4 fixes in first annular groove 1211, the outer cover of magnetic ring 4 is equipped with protective sheath 2, protective sheath 2 includes annular main part 21 and is located the annular plug 22 of circle and excircle bottom surface in annular main part 21 respectively, one side that first annular groove 1211 is close to and keeps away from the axle center is equipped with the second annular groove 1212 that suits with annular plug 22 respectively, still be equipped with third annular groove 1213 on the inner wall of second annular groove 1212, be fixed with elastic rubber circle 3 on the third annular groove 1213, annular main part 21 is located and is equipped with arc transition 211 between the one end of upside and inclined plane.

The utility model discloses the working process:

the utility model relates to an anti-drop rail bolt is in the course of the work, directly inserts the annular plug 22 of protective sheath 2 in second annular groove 1212, makes annular main part 21 cover in the outside of magnetic ring 4, inserts screw rod 11 with screw rod 11 orientation up again in the preset hole of assembly part 5, utilizes the magnetism appeal between magnetic ring 4 and the assembly part 5, prevents that the bolt from dropping before the screw in nut.

The utility model sets the screw head into a hexagonal section and a round head section, and utilizes the magnetic attraction between the magnetic ring arranged in the round head section and the assembly part to tightly attach the plane of the hexagonal section and the assembly part, thereby preventing the bolt from falling; the protective sleeve is covered outside the magnetic ring, so that impurities such as dust, rainwater and the like are prevented from polluting or corroding the magnetic ring; through set up the inclined plane on the button head section and set up the arc transition on annular main part, make things convenient for the rainwater to drop, prevent that the rainwater from hoarding up on the spiral shell is overhead.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. An anti-drop rail bolt which characterized in that: including bolt body (1) and magnetic ring (4), bolt body (1) includes screw rod (11) and screw head (12) that are located screw rod (11) one end, screw head (12) are including circle head section (121) and hexagonal section (122), hexagonal section (122) are located between screw rod (11) and circle head section (121), one side plane that circle head section (121) are close to hexagonal section (122) is the inclined plane, magnetic ring (4) are fixed on the inclined plane.

2. A drop-preventing rail bolt according to claim 1, wherein: the screw (11) comprises a polished rod section (112) without external threads and a threaded section (111) with external threads, and the polished rod section (112) is positioned on one side close to the screw head (12).

3. A drop-preventing rail bolt according to claim 2, wherein: and a guide section (113) is further arranged at one end, far away from the light rod section (112), of the threaded section (111).

4. A drop-preventing rail bolt according to claim 1, wherein: the included angle between the inclined plane and the horizontal plane is 15-45 degrees.

5. A drop-preventing rail bolt according to claim 1, wherein: one side that circle head section (121) is close to hexagonal section (122) is equipped with first annular groove (1211), magnetic ring (4) are fixed in first annular groove (1211), magnetic ring (4) dustcoat is equipped with protective sheath (2), protective sheath (2) include annular main part (21) and are located annular main part (21) interior circle and annular plug (22) of excircle bottom surface respectively, one side that first annular groove (1211) are close to and keep away from the axle center is equipped with second annular groove (1212) that suits with annular plug (22) respectively, still be equipped with third annular groove (1213) on the inner wall of second annular groove (1212), be fixed with elastic rubber circle (3) on third annular groove (1213).

6. An anti-drop rail bolt according to claim 5, wherein: an arc transition (211) is arranged between one end of the annular main body (21) positioned at the upper side and the inclined plane.