CN213360767U - Bolt and nut assembly with thread protection function - Google Patents
Bolt and nut assembly with thread protection function Download PDFInfo
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- CN213360767U CN213360767U CN202022236472.0U CN202022236472U CN213360767U CN 213360767 U CN213360767 U CN 213360767U CN 202022236472 U CN202022236472 U CN 202022236472U CN 213360767 U CN213360767 U CN 213360767U
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- hole
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- hexagonal
- nut
- head reducing
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Abstract
The utility model discloses a bolt and nut assembly with thread protection function, which comprises a hexagon head reducing bolt, an inner hexagon cone end nut and a bowl-shaped gasket; one end of the hexagonal head reducing bolt is of a threaded structure, the middle part of the hexagonal head reducing bolt is of a polished rod structure, the other end of the hexagonal head reducing bolt is of an outer hexagonal head structure, the outer diameter of an external thread on the threaded structure is smaller than that of the polished rod, one end of an inner hexagonal conical end nut is of a cylindrical surface, the other end of the inner hexagonal conical end nut is of a conical surface, an internal threaded hole matched with the external thread on the threaded structure is arranged in the end of the cylindrical surface, the outer diameter of the end of the cylindrical surface is the same as that of the polished rod, a stepped hole is arranged in a bowl-shaped gasket, a large-diameter hole of the stepped hole is sleeved on the polished rod, a small-diameter hole is sleeved on the threaded structure; the utility model discloses connection structure mounting hole and screw thread can be effectively protected, assembly efficiency can be improved again.
Description
Technical Field
The utility model belongs to the technical field of the fastener design, it is concrete, relate to a bolt and nut subassembly with screw thread protect function.
Background
The bolt and nut connection is one of the main connection forms of the structure, has the characteristics of convenience in installation, easiness in disassembly and high reliability, and can bear larger load. However, when the common bolt and the common nut are disassembled and assembled, the thread at the tail of the bolt can scratch and rub the mounting hole of the connecting structure, so that the thread is easily damaged, the hole wall is scratched, the surface quality of the hole is reduced, the local extrusion strength and the fatigue durability of the connecting structure are influenced, and even initial cracks may be generated.
In addition, a plurality of bolts are generally needed to be connected at the connection part of an important structure, and under the influence of assembly errors, a plurality of bolts are generally needed to be initially positioned by positioning pins, then other bolts are installed, and finally the positioning pins are detached, so that the assembly efficiency of the structure is influenced.
Disclosure of Invention
To the above-mentioned prior art, the utility model discloses an overcome prior art not enough, adapt to reality needs, provide a connection position for bearing shear load, and can effectively protect helicitic texture's bolt-nut subassembly when the dismouting.
In order to realize the purpose, the utility model discloses a technical scheme be: a bolt and nut assembly with a thread protection function comprises a hexagonal head reducing bolt, an inner hexagonal cone end nut and a bowl-shaped washer; one end of the hexagonal head reducing bolt is of a threaded structure, the middle part of the hexagonal head reducing bolt is of a polished rod structure, the other end of the hexagonal head reducing bolt is of an outer hexagonal head structure, the nominal diameter of external threads on the threaded structure is smaller than the diameter of the polished rod in the middle part, one end of the inner hexagonal cone end nut is of a cylindrical surface, the other end of the inner hexagonal cone end nut is of a conical surface, the conical surface is used for assisting in quick positioning, an inner threaded hole matched with the external threads of the threaded structure on the hexagonal head reducing bolt is arranged in the cylindrical surface end of the inner hexagonal cone end nut, the outer diameter of the cylindrical surface of the inner hexagonal cone end nut is the same as the outer diameter of the polished rod of the hexagonal head reducing bolt, a stepped hole which ensures the hexagonal head reducing bolt to freely pass through when the hexagonal head reducing bolt is installed is arranged in the bowl-shaped gasket, a large-diameter hole of the stepped hole is sleeved on, and one end of the hexagonal head reducing bolt sequentially penetrates through the mounting hole of the connecting structure, the stepped hole of the bowl-shaped gasket and the inner threaded hole of the inner hexagonal cone end nut to be connected with the inner hexagonal cone end nut, so that two ends of the bowl-shaped gasket are respectively contacted with the cylindrical surface end of the connecting structure and the inner hexagonal cone end nut.
Furthermore, an inner hexagonal through hole is arranged in the conical surface end of the inner hexagonal cone end nut.
Furthermore, the outer diameter of the polish rod on the hexagonal head reducing bolt and the outer diameter of the cylindrical surface of the inner hexagonal cone end nut are matched with the aperture of the mounting hole of the connecting structure.
Furthermore, the bowl-shaped gasket is bowl-shaped, the aperture of a small-diameter hole of a stepped hole in the bowl-shaped gasket is matched with the outer diameter of the thread structure on the hexagonal head reducing bolt, and the aperture of a large-diameter hole of the stepped hole is matched with the outer diameter of a polish rod on the hexagonal head reducing bolt.
Furthermore, the depth of the inner threaded hole at the cylindrical surface end of the inner hexagonal cone end nut is greater than or equal to the length of the threaded structure of the hexagonal head reducing bolt, so that the threaded structure on the hexagonal head reducing bolt can be completely screwed into the inner threaded hole of the inner hexagonal cone end nut.
Furthermore, the hexagonal head reducing bolt sequentially penetrates through the mounting hole of the connecting structure, the stepped hole in the bowl-shaped gasket and the inner threaded hole at the cylindrical surface end of the inner hexagonal cone end nut through the threaded structure end to be connected with the inner hexagonal cone end nut.
The utility model has the advantages that: compare with ordinary bolt, nut, the utility model discloses a hexagonal head reducing bolt and interior hexagonal cone end nut can be inside the whole screw in interior hexagonal cone end nut of screw thread of hexagonal head reducing bolt after the equipment to when the installation protect connection structure mounting hole and screw thread not destroyed, and the conical surface of interior hexagonal cone end nut can assist quick location, later pull down interior hexagonal cone end nut, can realize the installation after packing into the calathiform packing ring and reassembling between hexagonal head reducing bolt and interior hexagonal cone end nut. The utility model discloses can effectively protect connection structure mounting hole and screw thread when dismouting hexagon head reducing bolt, can improve assembly efficiency again.
Drawings
Fig. 1 is a schematic exploded view of the present invention;
fig. 2 is a schematic structural view of the hexagonal head reducing bolt and the hexagon socket head cone end nut of the present invention assembled and then assembled into the mounting hole of the connecting structure;
fig. 3 is a schematic structural view of the present invention.
In the figure: 1-inner hexagonal cone end nut, 2-bowl-shaped gasket, 3-hexagonal head reducing bolt, 4-connecting structure, 5-thread structure, 6-polish rod, 7-outer hexagonal head structure, 8-cylindrical surface, 9-conical surface, 10-inner thread hole, 11-stepped hole and 12-inner hexagonal through hole.
Detailed Description
The following description of the embodiments of the present invention will be further described with reference to the accompanying drawings, and it is to be understood that the description is only for the purpose of illustration and description, and is not intended to limit the invention.
Example (b): as shown in fig. 1 to 3, the utility model provides a bolt and nut assembly with thread protection function, which comprises a hexagon head reducing bolt 3, an inner hexagon cone end nut 1 and a bowl-shaped washer 2; one end of the hexagonal head reducing bolt 3 is a thread structure 5, the middle part is a polished rod 6 structure, the other end is an outer hexagonal head structure 7, the nominal diameter of the external thread on the thread structure 5 is smaller than the diameter of the polished rod 6 in the middle part, one end of the inner hexagonal cone end nut 1 is a cylindrical surface 8, the other end is a conical surface 9, the conical surface 9 is used for assisting in rapid positioning, an internal thread hole 10 matched with the external thread of the thread structure 5 on the hexagonal head reducing bolt 3 is arranged in the cylindrical surface 8 end of the inner hexagonal cone end nut 1, the external diameter of the cylindrical surface 8 end of the inner hexagonal cone end nut 1 is the same as the external diameter of the polished rod 6 of the hexagonal head reducing bolt 3, a stepped hole 11 which ensures the hexagonal head reducing bolt 3 to freely pass through when being installed is arranged in the bowl-shaped gasket 2, the large diameter hole of the stepped hole 11 is sleeved on the polished rod 6 of the hexagonal head reducing bolt 3, and the small diameter, and the aperture of the small-diameter hole is smaller than the outer diameter of the cylindrical surface 8 of the inner hexagonal cone end nut 1, one end of the hexagonal head reducing bolt 3 sequentially penetrates through the mounting hole of the connecting structure 4, the stepped hole 11 of the bowl-shaped gasket 2 and the inner threaded hole 10 of the inner hexagonal cone end nut 1 to be connected with the inner hexagonal cone end nut 1, and two ends of the bowl-shaped gasket 2 are respectively contacted with the connecting structure 4 and the cylindrical surface 8 of the inner hexagonal cone end nut 1.
Preferably, an inner hexagonal through hole 12 is formed in the end, 9, of the conical surface of the inner hexagonal conical end nut 1.
Preferably, the outer diameter of the polish rod 6 on the hexagonal head reducing bolt 3 and the outer diameter of the cylindrical surface 8 of the inner hexagonal cone end nut 1 are matched with the aperture of the mounting hole of the connecting structure 4.
Preferably, the bowl-shaped gasket 2 is bowl-shaped, the small-diameter hole of the stepped hole 11 in the bowl-shaped gasket 2 is matched with the outer diameter of the threaded structure 5 in the hexagonal reducing bolt 3, and the large-diameter hole of the stepped hole 11 is matched with the outer diameter of the polish rod 6 in the hexagonal reducing bolt 3.
Preferably, the depth of the hole of the internal threaded hole 10 at the end of the cylindrical surface 8 of the internal hexagonal cone end nut 1 is greater than or equal to the length of the threaded structure 5 of the hexagonal head reducing bolt 3, so that the threaded structure 5 on the hexagonal head reducing bolt 3 can be completely screwed into the internal threaded hole 10 of the internal hexagonal cone end nut 1.
Preferably, the hexagonal head reducing bolt 3 sequentially penetrates through the mounting hole of the connecting structure 4, the stepped hole 11 on the bowl-shaped washer 2 and the internal threaded hole 10 at the end of the cylindrical surface 8 of the inner hexagonal cone end nut 1 through the end of the threaded structure 5 to be connected with the inner hexagonal cone end nut 1.
The utility model discloses a theory of operation does: firstly, assembling the inner hexagonal cone end nut 1 and the hexagonal head reducing bolt 3, and then installing the inner hexagonal cone end nut and the hexagonal head reducing bolt into an installation hole (shown in figure 2) of the connecting structure 4, wherein the conical surface 9 of the inner hexagonal cone end nut 1 has a guiding function and can assist in quick positioning; the second step will take off interior hexagonal awl end nut 1 earlier, pack into bowl shape packing ring 2, pack into interior hexagonal awl end nut 1 again, and the installation is in place back interior hexagonal awl end nut 1 extrusion bowl shape packing ring 2, and bowl shape packing ring 2 extrudees connection structure 4, accomplishes the utility model discloses the installation of subassembly (as shown in fig. 3). The utility model discloses a dismantle according to above-mentioned step reverse implementation can.
The above-mentioned embodiment only explains the utility model discloses a basic principle, its each subassembly size can design as required, the utility model is suitable for a bearing shear load's connection structure.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. The utility model provides a bolt and nut subassembly with screw thread protect function, includes hexagon head reducing bolt (3), interior hexagonal cone end nut (1) and bowl shape packing ring (2), its characterized in that: one end of the hexagonal head reducing bolt (3) is of a threaded structure (5), the middle part of the hexagonal head reducing bolt is of a polished rod (6) structure, the other end of the hexagonal head reducing bolt is of an outer hexagonal head structure (7), the nominal diameter of an external thread on the threaded structure (5) is smaller than the diameter of the polished rod (6) in the middle part, one end of the inner hexagonal cone end nut (1) is of a cylindrical surface (8), the other end of the inner hexagonal cone end nut (1) is of a conical surface (9), the conical surface (9) is used for assisting in rapid positioning, an internal threaded hole (10) matched with the external thread of the threaded structure (5) on the hexagonal head reducing bolt (3) is arranged in the cylindrical surface (8) end of the inner hexagonal cone end nut (1), the external diameter of the cylindrical surface (8) of the inner hexagonal cone end nut (1) is the same as the external diameter of the polished rod (6) of the hexagonal head reducing bolt (3), a, the big footpath hole of this shoulder hole (11) cup joints on polished rod (6) of hexagon head reducing bolt (3), and the path hole cup joints on the helicitic texture (5) of hexagon head reducing bolt (3), and the path hole aperture is less than the external diameter of interior hexagonal cone end nut (1) face of cylinder (8), hexagon head reducing bolt (3) one end is passed mounting hole, shoulder hole (11) and interior internal thread hole (10) and interior hexagonal cone end nut (1) of connection structure (4) in proper order and is connected with interior hexagonal cone end nut (1) of connection structure (4), bowl shape packing ring (2) both ends respectively with connection structure (4) and interior hexagonal cone end nut (1) face of cylinder (8) end contact.
2. The bolt-nut assembly with thread protection function according to claim 1, characterized in that: an inner hexagonal through hole (12) is arranged in the conical surface (9) end of the inner hexagonal conical end nut (1).
3. The bolt-nut assembly with thread protection function according to claim 1, characterized in that: the outer diameter of a polish rod (6) on the hexagonal head reducing bolt (3) and the outer diameter of a cylindrical surface (8) of the inner hexagonal cone end nut (1) are matched with the aperture of the mounting hole of the connecting structure (4).
4. The bolt-nut assembly with thread protection function according to claim 1, characterized in that: the appearance of the bowl-shaped gasket (2) is bowl-shaped, the aperture of the small diameter hole of the stepped hole (11) on the bowl-shaped gasket (2) is matched with the outer diameter of the thread structure (5) on the hexagonal head reducing bolt (3), and the aperture of the large diameter hole of the stepped hole (11) is matched with the outer diameter of the polish rod (6) on the hexagonal head reducing bolt (3).
5. The bolt-nut assembly with thread protection function according to claim 1, characterized in that: the inner thread hole (10) at the cylindrical surface (8) end of the inner hexagonal cone end nut (1) has a hole depth more than or equal to the length of the thread structure (5) of the hexagonal head reducing bolt (3).
6. The bolt-nut assembly with thread protection function according to claim 1, characterized in that: the hexagonal head reducing bolt (3) sequentially penetrates through a mounting hole of the connecting structure (4), a stepped hole (11) in the bowl-shaped gasket (2) and an internal threaded hole (10) at the end of a cylindrical surface (8) of the inner hexagonal cone end nut (1) through the end of the threaded structure (5) to be connected with the inner hexagonal cone end nut (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022236472.0U CN213360767U (en) | 2020-10-10 | 2020-10-10 | Bolt and nut assembly with thread protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022236472.0U CN213360767U (en) | 2020-10-10 | 2020-10-10 | Bolt and nut assembly with thread protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213360767U true CN213360767U (en) | 2021-06-04 |
Family
ID=76127056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022236472.0U Active CN213360767U (en) | 2020-10-10 | 2020-10-10 | Bolt and nut assembly with thread protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213360767U (en) |
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2020
- 2020-10-10 CN CN202022236472.0U patent/CN213360767U/en active Active
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