CN205908611U - Compact form bolt and nut subassembly expands - Google Patents
Compact form bolt and nut subassembly expands Download PDFInfo
- Publication number
- CN205908611U CN205908611U CN201620628601.1U CN201620628601U CN205908611U CN 205908611 U CN205908611 U CN 205908611U CN 201620628601 U CN201620628601 U CN 201620628601U CN 205908611 U CN205908611 U CN 205908611U
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- open slot
- expansion sleeve
- expansion
- 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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- Dowels (AREA)
Abstract
The utility model provides a the utility model discloses a compact form bolt and nut subassembly expands's technical scheme, this scheme includes the screw bolt and nut, the one end of nut is provided with the open slot, evenly is provided with the screw hole in this open slot, installing the tight cover that expands in the open slot of nut, should expand and tightly overlap the endotheca and be equipped with the clamping ring, tight cover and the clamping ring of expanding passes through the junk ring bolt and installs the threaded hole on the nut. The tight cover that expands is clearance fit with the nut, with the bolt also be clearance fit, but it is impressed in the nut open slot by the clamping ring to expand tight cover, under the packing force of junk ring bolt, it expands to make tightly overlap produce the tight power that expands between bolt and nut, can be with the work piece clamp tightly to can prevent to become flexible.
Description
Technical field
This utility model belongs to machanical fastener technical field, more particularly, to a kind of expansion bolt nut assembly.
Background technology
The harmful effect that the end-play that traditional unit bolt nut is difficult to avoid that in real work produces, especially
In the higher main equipment of some precision, security requirement, and in some special installation structures, using common spiral shell
In addition it is also necessary to other locking means are improving stabilization of equipment performance after bolt nut is fixing, this is the shortcoming of prior art.
Content of the invention
Technical problem to be solved in the utility model is it is simply that be directed to the deficiency existing for prior art, and provides one kind
The end-play of bolt and nut can effectively be reduced, increase the expansion bolt nut assembly of anti-loosing effect.
This programme is achieved by the following technical measures: expansion bolt nut assembly of the present utility model, including
Screw bolt and nut, one end of described nut is provided with open slot, is evenly arranged with screwed hole in this open slot, the opening of described nut
In mouth groove, expansion sleeve is installed, is arranged with pressure ring in this expansion sleeve, described expansion sleeve and pressure ring are arranged on spiral shell by junk ring bolt
Screw thread in the hole on mother.Described expansion sleeve and nut are gap cooperations, be also gap cooperation with bolt, but expansion sleeve is by pressure ring
In pressed-in nut open slot, under the thrust of junk ring bolt, expansion sleeve is made to produce tension force between bolts and nuts, permissible
By Workpiece clamping, and it is prevented from loosening.
Expansion bolt nut assembly of the present utility model, it further improvement is that: described expansion sleeve medial surface is cone
Face.
Expansion bolt nut assembly of the present utility model, it further improvement is that: the lateral surface of described pressure ring is cone
Face.
Expansion bolt nut assembly of the present utility model, it further improvement is that: described expansion sleeve medial surface is cone
Face, the taper of described expansion sleeve medial surface is identical with the taper of pressure ring lateral surface.Equal by the face that contacts expansion sleeve with pressure ring
It is designed to the conical surface, is conducive to increasing frictional force between the two, increase the stability connecting between screw bolt and nut further.
Expansion bolt nut assembly of the present utility model, it further improvement is that: described pressure ring internal diameter and screwed hole
Aperture identical；The internal diameter of pressure ring is more than the external diameter of junk ring bolt.
Expansion bolt nut assembly of the present utility model, it further improvement is that: described junk ring bolt is interior hexagonal
Bolt, its flight lead is identical with nut open slot internal thread hole with rotation direction.
Expansion bolt nut assembly of the present utility model, it further improvement is that: setting in described nut open slot
The number of screwed hole be 2-8, evenly distributed.
The beneficial effect of this programme can be learnt according to the narration of such scheme, the expansion bolt nut group of this programme
Part, after fastening into, by between pressure ring pressed-in nut and bolt, expansion sleeve produces pressure between bolt and nut to expansion sleeve to nut
Power, when, in junk ring bolt progressively fastener cycle, pressure is gradually increased.Expansion sleeve increased bolts and nuts between bolt and nut
Relative stiction, play and increase the effect loosened further.Supporting role fall between bolt and nut for the expansion sleeve simultaneously
Low radial-play between the two, improves stability.As can be seen here, this utility model compared with prior art, has reality
Matter feature and progress, the beneficial effect that it is implemented is also obvious.
Brief description
Fig. 1 is structural representation of the present utility model.
Fig. 2 is expansion sleeve structural representation of the present utility model.
Fig. 3 is the screwed hole distribution schematic diagram on this utility model nut.
In figure, 1- bolt, 2- nut, 3- expansion sleeve, 4- pressure ring, 5- junk ring bolt, 6- part, 7- part, 8- screw thread
Hole.
Specific embodiment
For the technical characterstic of this programme can be clearly described, below by a specific embodiment, and combine its accompanying drawing, right
This programme is illustrated.
By accompanying drawing as can be seen that expansion bolt nut assembly of the present utility model, including bolt 1 and nut 2, described
One end of nut 2 is provided with open slot, is evenly arranged with screwed hole 8, is provided with the open slot of described nut 2 in this open slot
Expansion sleeve 3, is arranged with pressure ring 4 in this expansion sleeve 3, described expansion sleeve 3 and pressure ring 4 are arranged on nut 2 by junk ring bolt 5
In screwed hole 8.Described expansion sleeve 3 and nut 2 are gap cooperations, be also gap cooperation with bolt 1, but expansion sleeve 3 is by pressure ring 4
In pressed-in nut open slot, under the thrust of junk ring bolt 5, expansion sleeve 3 is made to produce tension force between bolt 1 and nut 2.
The part 6 being arranged between bolt 1 and nut 2 and part 7 can be compressed, and prevent from loosening.In described expansion sleeve 3
Side is the conical surface.The lateral surface of described pressure ring 4 is the conical surface.The taper of described expansion sleeve 3 medial surface and the taper of pressure ring 4 lateral surface
Identical.The conical surface is designed to by the face contacting expansion sleeve 3 with pressure ring 4, is conducive to increasing frictional force between the two, enters one
Step increases the stability connecting between bolt 1 and nut 2.Described pressure ring internal diameter is identical with the aperture of screwed hole；The internal diameter of pressure ring
External diameter more than junk ring bolt.Described junk ring bolt is hexagon socket head cap screw, its flight lead and rotation direction and nut open slot internal thread hole
Identical.In described nut open slot, the number of the screwed hole of setting is 2-8, evenly distributed.
The beneficial effect of this programme can be learnt according to the narration of such scheme, the expansion bolt nut group of this programme
Part, after fastening into, by between pressure ring pressed-in nut and bolt, expansion sleeve produces pressure between bolt and nut to expansion sleeve to nut
Power, when, in junk ring bolt progressively fastener cycle, pressure is gradually increased.Expansion sleeve increased bolts and nuts between bolt and nut
Relative stiction, play and increase the effect loosened further.Supporting role fall between bolt and nut for the expansion sleeve simultaneously
Low radial-play between the two, improves stability.As can be seen here, this utility model compared with prior art, has reality
Matter feature and progress, the beneficial effect that it is implemented is also obvious.
This utility model can be achieved by the prior art without the technical characteristic of description, will not be described here.Certainly, on
Stating bright is not to restriction of the present utility model, and this utility model is also not limited to the example above, the art general
Change, remodeling, interpolation or replacement that logical technical staff is made in essential scope of the present utility model, also should belong to this practicality
New protection domain.
Claims (6)
1. a kind of expansion bolt nut assembly, including screw bolt and nut it is characterised in that: one end of described nut is provided with out
Mouth groove, is evenly arranged with screwed hole, is provided with expansion sleeve in the open slot of described nut in this open slot, sheathed in this expansion sleeve
There is the screw thread in the hole that pressure ring, described expansion sleeve and pressure ring are arranged on nut by junk ring bolt.
2. expansion bolt nut assembly according to claim 1 it is characterised in that: described expansion sleeve medial surface be cone
Face.
3. expansion bolt nut assembly according to claim 1 it is characterised in that: the lateral surface of described pressure ring be cone
Face.
4. expansion bolt nut assembly according to claim 3 it is characterised in that: described expansion sleeve medial surface be cone
Face, the taper of described expansion sleeve medial surface is identical with the taper of pressure ring lateral surface.
5. the expansion bolt nut assembly according to claim 1 or 2 or 3 it is characterised in that: described pressure ring internal diameter and spiral shell
The aperture of pit is identical；The internal diameter of pressure ring is more than the external diameter of junk ring bolt.
6. expansion bolt nut assembly according to claim 5 it is characterised in that: described junk ring bolt be interior hexagonal spiral shell
Bolt, its flight lead is identical with nut open slot internal thread hole with rotation direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620628601.1U CN205908611U (en) | 2016-06-23 | 2016-06-23 | Compact form bolt and nut subassembly expands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620628601.1U CN205908611U (en) | 2016-06-23 | 2016-06-23 | Compact form bolt and nut subassembly expands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205908611U true CN205908611U (en) | 2017-01-25 |
Family
ID=57812190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620628601.1U Expired - Fee Related CN205908611U (en) | 2016-06-23 | 2016-06-23 | Compact form bolt and nut subassembly expands |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205908611U (en) |
-
2016
- 2016-06-23 CN CN201620628601.1U patent/CN205908611U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20170623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |