CN208919039U - A kind of locking fastening assembly - Google Patents
A kind of locking fastening assembly Download PDFInfo
- Publication number
- CN208919039U CN208919039U CN201821483419.7U CN201821483419U CN208919039U CN 208919039 U CN208919039 U CN 208919039U CN 201821483419 U CN201821483419 U CN 201821483419U CN 208919039 U CN208919039 U CN 208919039U
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- screw thread
- fastening assembly
- locking fastening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of locking fastening assembly, including bolt and the nut being set on bolt, it is characterized in that: the bolt is cylindrical structure, the nut is annular structure, the surface of the bolt is provided with external screw thread, the inner surface of the nut is provided with internal screw thread, hexagon rotary head is connected with below the bolt, round card slot is provided with above the hexagon rotary head, there are two symmetrical semicircular ring gaskets for the inside setting of the circle card slot, the height of the semicircular ring gasket is greater than the height of round card slot, the bolt is located between two semicircular ring gaskets, the bottom end of the nut is provided with several equiangularly arranged protrusions, one end of the nut is provided with location hole.The utility model plays locking effect after being mounted on bolt to nut.
Description
Technical field
The utility model discloses a kind of locking fastening assembly, belongs to technical field of fastening.
Background technique
Currently, the connection of the key positions such as the spindle nose of domestic automobile vehicle bridge, bevel gear is all connected using big specification fastener, again
Since the country is hydraulic spanner to the installation tool at this position, precision be not it is very high, this position stress is very big, the loosening of screw thread
Rate is very high, and loosens and will cause very big vehicle driving safety hidden danger, this external screw thread is using 30 ° of wedge-shaped checknuts come locking
Actual needs is no longer satisfied, especially in automobile heavy truck industry.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide for a kind of locking fastening assembly, with
Solve the problems mentioned above in the background art.
To achieve the above object, the utility model provides following technical solution to realize:
A kind of locking fastening assembly, including bolt and the nut being set on bolt, it is characterized in that: the bolt is cylinder
Body structure, the nut are annular structure, and the surface of the bolt is provided with external screw thread, and the inner surface of the nut is provided with
Internal screw thread is connected with hexagon rotary head below the bolt, round card slot is provided with above the hexagon rotary head, described
There are two symmetrical semicircular ring gasket, the height of the semicircular ring gasket to be greater than round card slot for the inside setting of round card slot
Height, the bolt is located between two semicircular ring gaskets, and the bottom end of the nut is provided with several and angularly arranges
The protrusion of column, one end of the nut are provided with location hole, are provided with positioning strip on the inside of the location hole, the nut it is outer
End is provided with several anti-skidding salient points equidistantly arranged, and the bottom end of the hexagon rotary head is provided with mounting groove, the installation
Slot can be hexagonal structure, square structure or triangular structure.
As preferred: the internal screw thread and externally threaded oppositely oriented, and internal screw thread and externally threaded surface are provided with
Phosphate coating.
As preferred: the tooth bottom of the internal screw thread is provided with tapered ramp, and the tilt angle of the tapered ramp is at 55 °
To between 65 °.
As preferred: being provided with several inclined threaded holes, the both ends point of the threaded hole in the hexagon rotary head
It is not through to the both ends of hexagon rotary head.
As preferred: the tilt angle of the threaded hole is between 15 ° to 25 °, and semicircular ring gasket passes through positioning bolt
It is fixedly connected across threaded hole.
As preferred: one end of the positioning strip is provided with the inclined surface of two opposition, and tilt angle 20 ° to 30 ° it
Between, the positioning strip is threadedly coupled with location hole.
As preferred: the bottom end of the protrusion is provided with from inclination angle outside inside, the size at the inclination angle 1 ° to 2 ° it
Between.
The utility model has the beneficial effects that
Using several anti-skidding salient points are provided on the outer surface of nut, hand or machine and spiral shell can be improved during installation
Frictional force between mother plays anti-skidding effect；Since the contact area of nut and clamped workpiece is bigger, more it is easy to appear
The phenomenon that being uneven is equipped with several protrusions in the bottom end of nut, reduces the contact area of nut and clamped workpiece, drop
The phenomenon that low degree is uneven, when nut and bolt are when clamping workpiece stress is excessive, are easy to appear nut loosening the phenomenon that,
The nut for having clamped workpiece to be fixed using positioning strip, two inclined surface are formed by wedge angle and are fixed on external screw thread, from
And nut loosening is prevented, so that the phenomenon that screw bolt and nut is less prone to loosening after tightening；Internal screw thread tooth bottom adds one 30 °
Tapered ramp, when bolts and nuts are mutually tightened, the cusp of bolt just tightly withstands on the wedge shape of variable-tooth type checknut
On inclined-plane, to produce very big coupling mechanism force；Inclination angle in protrusion can generate deformation during fastening, and nut is close
The position of internal screw thread expands under the action of deformation, and resists internal screw thread, to increase the pretightning force of nut, improves locking effect
Fruit.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of locking fastening assembly of the utility model；
Fig. 2 is a kind of cross-sectional view of locking fastening assembly of the utility model；
Fig. 3 is the enlarged drawing in Fig. 1 at A；
Fig. 4 is the structural schematic diagram of the utility model internal screw thread；
Fig. 5 is the structural schematic diagram of the utility model hexagon rotary head.
Appended drawing reference: 1, bolt；2, hexagon rotary head；3, semicircular ring gasket；4, nut；5, raised；6, anti-skidding salient point；7,
External screw thread；8, internal screw thread；9, threaded hole；10, inclined surface；11, location hole；12, positioning strip；13, mounting groove；14, inclination angle；15,
Tapered ramp.
Specific embodiment
It is described further referring to figs. 1 to Fig. 5 locking fastening assembly a kind of to the utility model.
A kind of locking fastening assembly, including bolt 1 and the nut 4 being set on bolt 1, bolt 1 is cylindrical structure, spiral shell
Mother 4 is annular structure, and the surface of bolt 1 is provided with external screw thread 7, and the inner surface of nut 4 is provided with internal screw thread 8, under bolt 1
Side is connected with hexagon rotary head 2, and the top of hexagon rotary head 2 is provided with round card slot, and there are two the inside settings of round card slot
Symmetrical semicircular ring gasket 3, the height of semicircular ring gasket 3 are greater than the height of round card slot, and bolt 1 is located at two semicircular rings
Between gasket 3, the bottom end of nut 4 is provided with several equiangularly arranged protrusions 5, and one end of nut 4 is provided with location hole 11,
The inside of location hole 11 is provided with positioning strip 12, and the outer end of nut 4 is provided with several anti-skidding salient points 6 equidistantly arranged, and six
The bottom end of side shape rotary head 2 is provided with mounting groove 13, and mounting groove 13 can be hexagonal structure, square structure or triangular structure,
Internal screw thread 8 and external screw thread 7 it is oppositely oriented, and the surface of internal screw thread 8 and external screw thread 7 is provided with phosphate coating, the tooth of internal screw thread 8
Bottom is provided with tapered ramp 15, and the tilt angle of tapered ramp 15 is between 55 ° to 65 °, if being provided in hexagon rotary head 2
Dry inclined threaded hole 9, the both ends of threaded hole 9 are extended through to the both ends of hexagon rotary head 2, the tilt angle of threaded hole 9
Between 15 ° to 25 °, and semicircular ring gasket 3 passes through threaded hole 9 by positioning bolt and is fixedly connected, and one end of positioning strip 12 is set
It is equipped with the inclined surface 10 of two opposition, and tilt angle, between 20 ° to 30 °, positioning strip 12 is threadedly coupled with location hole 11, protrusion
5 bottom end is provided with from inclination angle 14 outside inside, and the size at inclination angle 14 is between 1 ° to 2 °.
Using several anti-skidding salient points 6 are provided on the outer surface of nut 4, can improve during installation hand or machine with
Frictional force between nut 4 plays anti-skidding effect；It is easier since nut 4 and the contact area of clamped workpiece are bigger
The phenomenon that being uneven is equipped with several protrusions 5 in the bottom end of nut 4, reduces the contact of nut 4 and clamped workpiece
Area reduces plane the phenomenon that being uneven, and when nut 4 and bolt 1 are when clamping workpiece stress is excessive, is easy to appear nut 4
The phenomenon that loosening, is fixed the nut 4 for having clamped workpiece using positioning strip 12, and it is solid that two inclined surface 10 are formed by wedge angle
It is scheduled on external screw thread 7, to prevent nut 4 from loosening, so that the phenomenon that bolt 1 and nut 4 are less prone to loosening after tightening；It is interior
One 30 ° of tapered ramp 15 is added at 8 tooth bottom of screw thread, and when bolt 1 and nut 4 are mutually tightened, the cusp of bolt 1 is just tightly
It withstands on the tapered ramp 15 of variable-tooth type checknut, to produce very big coupling mechanism force；Inclination angle 14 in protrusion 5 can be
Deformation is generated during fastening, nut 4 expands under the action of deformation close to the position of internal screw thread 8, and resists internal screw thread 8,
To increase the pretightning force of nut 4, anti-loosing effect is improved.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of locking fastening assembly, including bolt and the nut being set on bolt, it is characterized in that: the bolt is cylindrical body
Structure, the nut are annular structure, and the surface of the bolt is provided with external screw thread, and the inner surface of the nut is provided with interior
Screw thread is connected with hexagon rotary head below the bolt, round card slot, the circle is provided with above the hexagon rotary head
There are two symmetrical semicircular ring gasket, the height of the semicircular ring gasket to be greater than round card slot for the inside setting of shape card slot
Highly, the bolt is located between two semicircular ring gaskets, and it is equiangularly arranged that the bottom end of the nut is provided with several
Protrusion, one end of the nut is provided with location hole, positioning strip, the outer end of the nut is provided on the inside of the location hole
Several anti-skidding salient points equidistantly arranged are provided with, the bottom end of the hexagon rotary head is provided with mounting groove, the mounting groove
It can be hexagonal structure, square structure or triangular structure.
2. a kind of locking fastening assembly according to claim 1, it is characterized in that: the internal screw thread and externally threaded rotation direction phase
Instead, and internal screw thread and externally threaded surface are provided with phosphate coating.
3. a kind of locking fastening assembly according to claim 1, it is characterized in that: the tooth bottom of the internal screw thread is provided with wedge
Shape inclined-plane, the tilt angle of the tapered ramp is between 55 ° to 65 °.
4. a kind of locking fastening assembly according to claim 1, it is characterized in that: being provided in the hexagon rotary head several
A inclined threaded hole, the both ends of the threaded hole are extended through to the both ends of hexagon rotary head.
5. a kind of locking fastening assembly according to claim 4, it is characterized in that: the tilt angle of the threaded hole is at 15 °
To between 25 °, and semicircular ring gasket is fixedly connected by positioning bolt across threaded hole.
6. a kind of locking fastening assembly according to claim 1, it is characterized in that: one end of the positioning strip is provided with two pairs
Vertical inclined surface, and tilt angle, between 20 ° to 30 °, the positioning strip is threadedly coupled with location hole.
7. a kind of locking fastening assembly according to claim 1, it is characterized in that: the bottom end of the protrusion is provided with from outer past
Interior inclination angle, the size at the inclination angle is between 1 ° to 2 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821483419.7U CN208919039U (en) | 2018-09-11 | 2018-09-11 | A kind of locking fastening assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821483419.7U CN208919039U (en) | 2018-09-11 | 2018-09-11 | A kind of locking fastening assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208919039U true CN208919039U (en) | 2019-05-31 |
Family
ID=66705112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821483419.7U Expired - Fee Related CN208919039U (en) | 2018-09-11 | 2018-09-11 | A kind of locking fastening assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208919039U (en) |
-
2018
- 2018-09-11 CN CN201821483419.7U patent/CN208919039U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190531 Termination date: 20210911 |