CN208816494U - A kind of backing-up screw - Google Patents
A kind of backing-up screw Download PDFInfo
- Publication number
- CN208816494U CN208816494U CN201821534833.6U CN201821534833U CN208816494U CN 208816494 U CN208816494 U CN 208816494U CN 201821534833 U CN201821534833 U CN 201821534833U CN 208816494 U CN208816494 U CN 208816494U
- Authority
- CN
- China
- Prior art keywords
- boss
- nut
- screw
- backing
- groove
- 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
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a kind of backing-up screws, it is related to fastener areas, the backing-up screw includes nut and screw rod, the lower end surface of the nut is axially provided with boss, the boss is arranged close to one end of nut in regular polygon, the rounded setting of the other end, the circular diameter are not more than the inscribed circle of regular polygon, and the boss has elastically-deformable ability.The utility model has the following beneficial effects: connected piece offers the groove being connected with threaded hole, the circular in cross-section of groove is arranged, circular diameter is equal with the inscribed circle diameter of regular polygon, during staff tightens screw, projection section generates extruding to groove inner wall, forms interference fit, and interference fit makes to generate elastic pressure between boss and groove, to firmly be limited to screw, screw loosening is avoided.
Description
Technical field
The utility model relates to fastener areas, more specifically, it relates to a kind of backing-up screw.
Background technique
Usually use screw and bolt as fastener in automobile.Square neck bolt is provided with a Duan Fang in its nut lower end surface
Neck can avoid relatively rotating between bolt and connected piece and causing connection not close.With this bolted quilt
On connector, needing to open up a square hole accordingly, the square neck of bolt is embedded in the square hole of connected piece by staff, then from
Reverse side is tightened bolt using nut.
When screw rod end is located inside connected piece, then it is not available nut and tightens bolt, be only capable of at this time using spiral shell
Mate with threaded holes connection is followed closely, and square neck screw can not be turned in square neck section, be had much room for improvement.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of backing-up screw, when installation not
It can not turn, can avoid screw loosening after being installed.
To achieve the above object, the utility model provides following technical solution:
A kind of backing-up screw, including nut and screw rod, the lower end surface of the nut are axially provided with boss, and the boss leans on
One end of nearly nut is arranged in regular polygon, the rounded setting of the other end, and the circular diameter is interior no more than regular polygon
The circle of contact, the boss have elastically-deformable ability.
By using above-mentioned technical proposal, connected piece offers the groove being connected with threaded hole, the cross section of groove
Rounded setting, circular diameter is equal with the inscribed circle diameter of boss upper surface regular polygon, tightens screw in staff
During, projection section generates extruding to groove inner wall, forms interference fit, and interference fit makes to generate between boss and groove
Elastic pressure avoids screw loosening to firmly be limited to screw；Boss has elastically-deformable ability, just polygon
The number of edges of shape is more, and maximal side differs smaller with inscribe diameter of a circle, and screw is more laborsaving when turning.
The utility model is further arranged to: the boss is arranged close to one end of nut in regular hexagon.
By using above-mentioned technical proposal, regular hexagon belongs to machining shape commonly used in the art, and production and processing is convenient, simultaneously
The maximum gauge of regular hexagon is not much different with inscribed circle, and staff excessively will not arduously cause during tightening screw
It is difficult to turn.
The utility model is further arranged to: the crest line of the boss is inclined to set, inclined direction and hand of spiral one
It causes.
By using above-mentioned technical proposal, inclined direction and the consistent crest line of hand of spiral can enable staff tighten spiral shell
It is easier to boss being screwed into groove during nail.
The utility model is further arranged to: the lower end surface of the boss is provided with guiding fillet.
By using above-mentioned technical proposal, being oriented to fillet plays the role of guiding to boss, enables boss be easier to insertion groove, more
Add hommization.
The utility model is further arranged to: the end of the screw rod is arranged in circular platform type, one end far from the nut
Area is less than the other end.
By using above-mentioned technical proposal, the end of screw rod is arranged in circular platform type, has the function of guiding to screw, enables spiral shell
Bar is easier in insertion threaded hole, more humanized.
The utility model is further arranged to: the upper surface of the nut is provided with dome.
By using above-mentioned technical proposal, the setting of dome enables the exposed parts of nut smooth, is not easy hook and scrapes foreign object, improves
Safety.
The utility model is further arranged to: the upper surface of the nut offers cross recess, and the cross recess is in cross
Infall is provided with resistance to angle rounding.
By using above-mentioned technical proposal, resistance to angle rounding enables the infall of nut and screwdriver round and smooth, will not be due to scratching
And it wears.
The utility model is further arranged to: the nut is provided with chamfering in the opening of cross recess.
By using above-mentioned technical proposal, chamfering has the function of guiding to screwdriver, and screwdriver is enabled to be easier to insertion cross
Slot, it is more humanized.
In conclusion the utility model has the following beneficial effects:
1. making to generate bullet between boss and groove by the interference fit between boss and the groove for being opened in connected piece
Property pressure avoids screw loosening to firmly be limited to screw；
2. inclined direction can enable staff be easier to during tightening screw with the consistent crest line of hand of spiral will be convex
Platform is screwed into groove；
3. the setting of dome enables the exposed parts of nut smooth, it is not easy hook and scrapes foreign object, improve safety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment, for showing the structure of boss；
Fig. 2 is the structural schematic diagram of embodiment, for showing the shape of boss both ends of the surface；
Fig. 3 is the structural schematic diagram of embodiment, for showing the structure of nut upper surface.
Description of symbols: 1, nut；2, screw rod；3, boss；31, it is oriented to fillet；4, dome；41, cross recess；42, resistance to
Angle rounding；43, chamfering.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
A kind of backing-up screw, as depicted in figs. 1 and 2, including nut 1 and screw rod 2, the lower end surface of nut 1 are fixedly connected with
The boss 3 being axially arranged, boss 3 are arranged close to one end of nut 1 in regular hexagon, and the rounded setting of the other end, this is circular
Diameter is equal with the inscribed circle of regular hexagon, and boss 3 is made of the elastic metallic with elastically-deformable ability, can be stainless
Steel, copper, aluminium etc..
Connected piece offers the groove being connected with threaded hole, the circular in cross-section setting of groove, circular diameter
It is equal with the inscribed circle diameter of above-mentioned regular hexagon.During staff tightens screw, boss 3 generates groove inner wall
It squeezes, forms interference fit, interference fit makes to generate elastic pressure between boss 3 and groove, to carry out to screw firm
Limit, avoids screw loosening.
Regular hexagon belongs to machining shape commonly used in the art, and production and processing is convenient, at the same the maximum gauge of regular hexagon with
Inscribed circle is not much different, and staff excessively will not arduously cause to be difficult to turn during tightening screw.
The crest line of boss 3 is inclined to set, and inclined direction is consistent with hand of spiral, enables staff in the mistake for tightening screw
It is easier to boss 3 being screwed into groove in journey.
The lower end surface of boss 3 is provided with guiding fillet 31, and guiding fillet 31 plays the role of guiding to boss 3, enables boss 3 more
Easily insertion groove, it is more humanized.The end of screw rod 2 is arranged in circular platform type, and the area far from 1 one end of nut is less than the other end,
The setting has the function of guiding to screw rod 2, and screw rod 2 is enabled to be easier in insertion threaded hole, more humanized.
As shown in figures 1 and 3, the upper surface of nut 1 enables the exposed of nut 1 integrally formed with dome 4, the setting of dome 4
Portion smooth is not easy hook and scrapes foreign object, improves safety.The upper surface of dome 4 offers cross recess 41, and cross recess 41 is in cross
Infall is provided with resistance to angle rounding 42.Resistance to angle rounding 42 enables dome 4 and the infall of screwdriver round and smooth, will not be right due to scratch
Cross recess 41 and screwdriver cause to wear.Dome 4 is provided with chamfering 43 in the opening of cross recess 41.Chamfering 43 is to chasing tool
There is guiding, screwdriver is enabled to be easier to insertion cross recess 41, it is more humanized.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel design concept, any modification, equivalent replacement, improvement and so on should be included in the protection of the utility model
Within the scope of.
Claims (8)
1. a kind of backing-up screw, including nut (1) and screw rod (2), it is characterised in that: the lower end surface of the nut (1) is axially set
It is equipped with boss (3), the boss (3) is arranged close to the one end of nut (1) in regular polygon, and the rounded setting of the other end is described
Circular diameter is not more than the inscribed circle of regular polygon, and the boss (3) has elastically-deformable ability.
2. a kind of backing-up screw according to claim 1, it is characterised in that: the one end of the boss (3) close to nut (1)
It is arranged in regular hexagon.
3. a kind of backing-up screw according to claim 1, it is characterised in that: the crest line of the boss (3) is inclined to set,
Inclined direction is consistent with hand of spiral.
4. a kind of backing-up screw according to claim 1, it is characterised in that: the lower end surface of the boss (3), which is provided with, leads
To fillet (31).
5. a kind of backing-up screw according to claim 1, it is characterised in that: the end of the screw rod (2) is set in circular platform type
It sets, the end area far from the nut (1) is less than the other end.
6. a kind of backing-up screw according to claim 1, it is characterised in that: the upper surface of the nut (1) is provided with circle
It pushes up (4).
7. a kind of backing-up screw according to claim 1, it is characterised in that: the upper surface of the nut (1) offers ten
Word slot (41), the cross recess (41) are provided with resistance to angle rounding (42) at right-angled intersection.
8. a kind of backing-up screw according to claim 7, it is characterised in that: nut (1) the opening in cross recess (41)
Chamfering (43) are provided at mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534833.6U CN208816494U (en) | 2018-09-19 | 2018-09-19 | A kind of backing-up screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534833.6U CN208816494U (en) | 2018-09-19 | 2018-09-19 | A kind of backing-up screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816494U true CN208816494U (en) | 2019-05-03 |
Family
ID=66277744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821534833.6U Expired - Fee Related CN208816494U (en) | 2018-09-19 | 2018-09-19 | A kind of backing-up screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816494U (en) |
-
2018
- 2018-09-19 CN CN201821534833.6U patent/CN208816494U/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 |
Granted publication date: 20190503 Termination date: 20190919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |