CN211778400U - Novel expansion bolt - Google Patents
Novel expansion bolt Download PDFInfo
- Publication number
- CN211778400U CN211778400U CN201922500087.XU CN201922500087U CN211778400U CN 211778400 U CN211778400 U CN 211778400U CN 201922500087 U CN201922500087 U CN 201922500087U CN 211778400 U CN211778400 U CN 211778400U
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- expansion
- circular cone
- pipe
- special
- bolt
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Abstract
The utility model discloses a novel expansion bolt, it includes hex bolts, expansion pipe and special-shaped nut, hex bolts is equipped with cylinder portion and screw thread portion, the expansion pipe is equipped with pipe portion and expansion portion, the external diameter of cylinder portion with the internal diameter cooperation of pipe portion, screw thread portion passes the expansion portion with special-shaped nut threaded connection, special-shaped nut is equipped with circular cone portion and circular cone portion, the external diameter of circular cone portion is greater than the internal diameter under the free state of expansion portion, the external diameter of circular cone portion with the internal diameter cooperation under the free state of expansion portion, the periphery of expansion portion is equipped with the guide way that cracks, the periphery of circular cone portion be equipped with the guide block of guide way complex that cracks. The utility model has the advantages of simple structure, convenient use and dismantling, skid resistance and repeated use realization.
Description
Technical Field
The utility model relates to a threaded connection spare especially relates to a novel expansion bolts.
Background
The screw is screwed on the brick wall or the cement wall, a hole with a proper size needs to be drilled on the wall by an electric drill, then the bolt is inserted into the hole, and the nut is screwed tightly. Therefore, in the actual operation process, the situation that the drilled hole is not suitable is often met, multiple drilling or object padding of the bolt is needed, the operation is complicated, the time is wasted, and the situations of insufficient bolt strength and short service life sometimes exist. In order to ensure the use strength, expansion bolts are mostly used at present, the expansion bolts generally comprise screw rods, screw caps and expansion sleeves, and when the expansion bolts are used, the front ends of the expansion sleeves are expanded by screwing in the screw rods, so that the bolts are clamped in holes in walls. Although the expansion bolt can ensure the subsequent use strength, the existing expansion bolt is difficult to remove after being installed and is difficult to use repeatedly, once the expansion bolt is installed, the expansion bolt is difficult to take out of the wall body and can only be used as disposable consumables, so that not only is the material wasted, but also the expansion bolt exposed outside the wall body influences the aesthetic property and hinders the change safety. In addition, because the diameter of the existing expansion bolt is fixed, when the mounting hole is larger, the expansion sleeve is easy to be driven to slip in the process of screwing the nut, and the mounting requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the novel expansion bolt is simple in structure, convenient to operate, anti-skidding and reusable.
In order to solve the technical problem, the utility model provides a novel expansion bolt, it includes hex bolts, expansion pipe and special-shaped nut, hex bolts is equipped with cylinder portion and screw thread portion, the expansion pipe is equipped with pipe portion and inflation portion, the external diameter of cylinder portion with the internal diameter cooperation of pipe portion, screw thread portion passes inflation portion with special-shaped nut threaded connection, special-shaped nut is equipped with circular cone portion and circular cone portion, the external diameter of circular cone portion is greater than the internal diameter under the free state of inflation portion, the external diameter of circular cone portion with the internal diameter cooperation under the free state of inflation portion, the periphery of inflation portion is equipped with the guide way that cracks, the periphery of circular cone portion be equipped with the guide block of guide way complex that cracks.
As the preferred embodiment of the present invention, the end of the threaded portion is provided with a stopper for preventing the special-shaped nut from being disengaged from the axial position-limiting member of the threaded portion.
As the utility model discloses a preferred scheme, axial locating part is the split pin, the end of screw thread portion be equipped with the pinhole that the split pin is connected.
As the utility model discloses a preferred scheme, the transversal T shape of personally submitting of guide way cracks, the transversal T shape of personally submitting of guide block.
As the preferred scheme of the utility model, the expansion pipe is equipped with the hexagonal head.
The utility model provides a pair of novel expansion bolts compares with prior art, and its beneficial effect lies in:
when the expansion bolt is used, the whole expansion bolt is inserted into the mounting hole, when the expansion pipe is matched with the mounting hole, the expansion pipe is relatively in a fixed state, then the hexagonal bolt is rotated, the special-shaped nut moves towards the inside of the expansion pipe under the restraint of the slotted guide groove and the guide block, and as the hexagonal bolt is gradually screwed in, the expansion part of the expansion pipe is expanded by the truncated cone part of the special-shaped nut, so that the bolt is clamped in the mounting hole; when the mounting hole is too large, the hexagon bolt can be rotated in advance to expand the expansion part of the expansion pipe to the degree matched with the mounting hole, and then the expansion pipe is inserted into the mounting hole to be screwed and fixed, so that the expansion pipe is prevented from being easily driven to slip in the process of screwing the hexagon bolt, the use is flexible, and the mounting requirement is met; when expansion bolts need to be dismantled, the reverse rotation hexagon bolt loosen can, avoid destroying near region (like the wall) of mounting hole to dismantling the in-process, the removal in-process that the special-shaped nut is withdrawing from the expansion pipe moreover, the guide block can be drawing and is slotting the guide way and shrink expansion portion to original state to can't reset and influence next use after avoiding the expansion pipe to expand. It can be seen that, the utility model discloses an expansion bolts has simple structure, uses and demolishs the convenience, and antiskid just can realize used repeatedly's advantage.
Drawings
Fig. 1 is a schematic structural diagram of a novel expansion bolt provided by an embodiment of the present invention;
fig. 2 is an exploded view of a new expansion bolt provided by an embodiment of the present invention;
fig. 3 is a cross-sectional view of a novel expansion bolt provided by an embodiment of the present invention;
in the figure, 1, a hexagon bolt; 11. a cylindrical portion; 12. a threaded portion; 2. an expansion tube; 21. a round tube portion; 22. an expansion part; 23. slotting a guide slot; 3. a special-shaped nut; 31. a frustum portion; 32. a circular table portion; 33. a guide block; 4. an axial stop.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate the orientation or positional relationship, are used in the present invention as being based on the orientation or positional relationship shown in the drawings, and are used only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, a preferred embodiment of a novel expansion bolt according to a preferred embodiment of the present invention, which comprises a hexagon bolt 1, an expansion pipe 2 and a special-shaped nut 3, wherein the hexagon bolt 1 is provided with a cylindrical part 11 and a thread part 12, the expansion pipe 2 is provided with a round pipe part 21 and an expansion part 22, the outer diameter of the cylindrical part 11 is matched with the inner diameter of the round pipe part 21, the thread part 12 passes through the expansion part 22 to be in threaded connection with the special-shaped nut 3, the special-shaped nut 3 is provided with a cone frustum part 31 and a cone frustum part 32, the outer diameter of the circular truncated cone portion 31 is larger than the inner diameter of the expansion portion 22 in the free state, the outer diameter of the circular truncated cone portion 32 is matched with the inner diameter of the expansion portion 22 in the free state, the periphery of the expansion part 22 is provided with a slotted guide groove 23, and the periphery of the circular table part 32 is provided with a guide block 33 matched with the slotted guide groove 23. When the expansion bolt is used, the whole expansion bolt is inserted into the mounting hole, when the expansion pipe 2 is matched with the mounting hole, the expansion pipe 2 is relatively in a fixed state, then the hexagonal bolt 1 is rotated, the special-shaped nut 3 moves towards the inside of the expansion pipe 2 under the restraint of the slotted guide groove 23 and the guide block 33, and as the hexagonal bolt 1 is gradually screwed in, the conical table part 31 of the special-shaped nut 3 expands the expansion part 22 of the expansion pipe 2, so that the bolt is clamped in the mounting hole; when the mounting hole is too large, the hexagon bolt 1 can be rotated in advance to expand the expansion part 22 of the expansion pipe 2 to the degree matched with the mounting hole, and then the expansion part is inserted into the mounting hole to be screwed and fixed, so that the expansion pipe 2 is prevented from being easily driven to slip in the process of screwing the hexagon bolt 1, the use is flexible, and the mounting requirement is met; when the expansion bolt needs to be dismantled, the hexagonal bolt 1 rotating reversely is loosened, the damage to the area (such as a wall surface) near the mounting hole in the dismantling process is avoided, the guide block 33 can pull the slotted guide groove 23 to shrink the expansion part 22 to the original state in the moving process of withdrawing the expansion pipe 2 by the special-shaped nut 3, and therefore the expansion pipe 2 cannot reset after being expanded to influence the next use is avoided. It can be seen that, the utility model discloses an expansion bolts has simple structure, uses and demolishs the convenience, and antiskid just can realize used repeatedly's advantage.
Illustratively, the end of the threaded portion 12 is provided with an axial stopper 4 for preventing the profile nut 3 from being disengaged from the threaded portion 12. Specifically, the axial limiting member 4 is a cotter pin, and a pin hole connected with the cotter pin is provided at the end of the threaded portion 12.
Illustratively, the slotted guide slot 23 has a T-shaped cross section, and the guide block 33 has a T-shaped cross section. Specifically, three slotted guide grooves 23 are uniformly arranged along the circumferential direction of the expansion part 22, and the slotted guide grooves 23 are parallel to the axis of the expansion pipe 2.
Exemplarily, expansion pipe 2 is equipped with the hexagonal head, and is the integrated into one piece structure to conveniently use the spanner to fix the expansion pipe, guarantee that follow-up operation goes on smoothly, still replace the setting of packing ring simultaneously, reduce spare part, convenient operation.
In the description of the present invention, it is to be understood that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are used in a generic sense, e.g., fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a novel expansion bolt, its characterized in that, includes hex bolts, expansion pipe and special-shaped nut, hex bolts is equipped with cylinder portion and screw thread portion, the expansion pipe is equipped with pipe portion and expansion portion, the external diameter of cylinder portion with the internal diameter cooperation of pipe portion, screw thread portion passes expansion portion with special-shaped nut threaded connection, special-shaped nut is equipped with circular cone portion and circular cone portion, the external diameter of circular cone portion is greater than the internal diameter under the free state of expansion portion, the external diameter of circular cone portion with the internal diameter cooperation under the free state of expansion portion, the periphery of expansion portion is equipped with the guide way that cracks, the periphery of circular cone portion be equipped with the guide block of guide way complex that cracks.
2. The new expansion bolt as claimed in claim 1, wherein the end of the threaded portion is provided with an axial stop for preventing the profile nut from coming off the threaded portion.
3. The new expansion bolt as claimed in claim 2, wherein said axial stop is a cotter pin, and the end of said threaded portion is provided with a pin hole to which said cotter pin is connected.
4. The new expansion bolt of claim 1, wherein said slotted guide slot is T-shaped in cross-section and said guide block is T-shaped in cross-section.
5. The new expansion bolt according to claim 1, characterized in that the expansion tube is provided with a hexagonal head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500087.XU CN211778400U (en) | 2019-12-31 | 2019-12-31 | Novel expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500087.XU CN211778400U (en) | 2019-12-31 | 2019-12-31 | Novel expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211778400U true CN211778400U (en) | 2020-10-27 |
Family
ID=72891076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922500087.XU Active CN211778400U (en) | 2019-12-31 | 2019-12-31 | Novel expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211778400U (en) |
-
2019
- 2019-12-31 CN CN201922500087.XU patent/CN211778400U/en active Active
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