CN202073904U - Bolt protective cap - Google Patents
Bolt protective cap Download PDFInfo
- Publication number
- CN202073904U CN202073904U CN2011201624150U CN201120162415U CN202073904U CN 202073904 U CN202073904 U CN 202073904U CN 2011201624150 U CN2011201624150 U CN 2011201624150U CN 201120162415 U CN201120162415 U CN 201120162415U CN 202073904 U CN202073904 U CN 202073904U
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- inner core
- swivel nut
- cylindrical shell
- 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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Abstract
The utility model discloses a bolt protective cap. The bolt protective cap is characterized by being a barrel of which one end is enclosed and the other end is open, wherein the open end is provided with an outer cavity for accommodating a nut and a screw hole for accommodating the end part of a screw rod in sequence from outside to inside along an axis; and the diameter of the screw hole is smaller than that of the outer cavity. In the utility model, the nut and the bolt are sleeved in the bolt protective cap, so that rainwater and the like can be prevented from falling on the nut and the screw rod, and the nut and the bolt are prevented from being rusted together. Meanwhile, the bolt and the nut are not exposed, so that the connection aesthetic property of the bolt is enhanced.
Description
Technical field
The utility model relates to a kind of bolt protective gear, is a kind of nut and screw rod end that is enclosed within bolt specifically, avoids screw rod and nut corrosion protective cap together.
Background technique
Bolt is as a kind of link commonly used, be widely used in the connection of all kinds of dynamic and static equipment and various piping flanges, bolt is as the advantage of link that fastening force is big and be convenient to dismounting and carries out overhaul of the equipments and maintenance that particularly for chemical plant installations, large number quipments adopts bolt to connect.Bolt is the fastening piece by being threaded and forming with screw rod and nut, and the screw rod end, back that is in place usually slightly stretches out in nut, to guarantee to have certain use surplus.In use, usually screw rod and nut are exposed in the environment, easily got rusty by the corrosion of air, sleet, particularly rainwater, snow-broth etc. easily invade the position that combines with nut along the screw flight groove, corrosion to bolt makes screw rod and nut rust together, thereby be difficult to nut is disassembled from screw rod again, make troubles for equipment or pipeline maintainance or dismounting.
For preventing nut and screw rod corrosion together, a kind of mode is to adopt stainless steel as bolt, but user cost significantly increases.The 2nd, apply grease on bolt, though can reach antirust purpose, it is attractive in appearance to influence bolt like this, particularly grease very easily adheres to dust, greasy dirt operator's hand or the clothing of can making dirty when operator operate in addition.
The model utility content
The purpose of this utility model just is to provide a kind of Bolt-protecting cap, leads not quick detachable problem to solve the corrosion of bolt in atmosphere environment.
The utility model adopts following technological scheme: a kind of Bolt-protecting cap, protective cap are the cylindrical shell that an end seals an end opening, and opening one end is followed successively by the exocoel that holds nut from outside to inside and holds the screw of screw rod end along axis, and screwhole diameter is less than described exocoel.
Described screw is arranged on the swivel nut, and the swivel nut outer wall is provided with axial ledge, and described swivel nut is to embed in the described cylindrical shell, and cylindrical shell is a groove corresponding to the position of swivel nut axial ledge.
Described cylindrical shell comprises urceolus and inner core, and inner core length is less than urceolus and be loaded on outer tube bottom, is fixed together, and the space that is positioned at the inner core outside outside in the cylindrical shell of position constitutes the described exocoel that holds nut, and described swivel nut is to be inlaid in the described inner core.
Described inner core inwall is provided with a plurality of salient points and is squeezed on the described swivel nut outer wall, and making thread bush and inner core is interference fit.
This Bolt-protecting cap of the present utility model is enclosed within the bolt end during use, nut is buckled in the exocoel, and the bolt end then is screwed into screw, drops from bolt to prevent protective cap.Because nut and bolt are enclosed in the Bolt-protecting cap, can prevent that rainwater etc. from drenching on nut and screw rod, avoids nut and bolt corrosion together.Because bolts and nuts do not expose, also improved the aesthetic property when bolt connects simultaneously.
Description of drawings
Fig. 1 is a Bolt-protecting cap structural representation of the present utility model;
Fig. 2 is the worm's eye view of Fig. 1;
Fig. 3 is a Bolt-protecting cap user mode schematic representation of the present utility model.
Among the figure: 1-urceolus, 2-inner core, 3-swivel nut, 4-exocoel, 5-screw, 6-nut, 7-screw rod, 21 grooves, 22-salient point, 31-flange.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, to help understanding content of the present utility model.
As shown in figures 1 and 3; it is a kind of Bolt-protecting cap of the present utility model; protective cap is the cylindrical shell that an end seals an end opening; the employing high-molecular organic material is made; its opening one end along axis from outside to inside (among Fig. 1 from top to bottom) be followed successively by and hold the exocoel 4 that nut uses and hold the screw 5 of screw rod end, the diameter of screw 5 is less than described exocoel 4.As shown in Figure 3, when being contained on the bolt, nut 6 just in time is positioned at exocoel 4, and screw rod 7 ends are to be screwed in the screw of swivel nut 3, can either prevent that like this protective cap from coming off from screw rod 7, can protect screw thread again.Utilize this protective cap that whole nut 6 and screw rod 7 ends are protected; avoid being subjected to external environment influence and get rusty or have dust to enter the joint gap of nut and bolt; bolt is not exposed with raising equipment aesthetic property, and avoid bolt exposed parts cause inharmonious different in size on the same equipment.
As Fig. 1 or shown in Figure 3, described screw 5 is arranged on the swivel nut 3, and swivel nut 3 outer walls are provided with axial ledge 31, and described swivel nut 3 is to embed in the described cylindrical shell that is made of urceolus 1 and inner core 2, and cylindrical shell is a groove 21 corresponding to the position of swivel nut axial ledge, rotates in cylindrical shell to prevent swivel nut.Body structure helped die sinking and processing in this minute.
Be similarly and be convenient to die sinking processing, cylindrical shell is made of urceolus 1 and inner core 2, inner core 2 length are less than urceolus 1 and be loaded on outer tube bottom, inner core and urceolus are fixed together (can stick together), the space that is arranged in (Fig. 1 below) beyond the inner core 2 in urceolus 1 constitutes the described exocoel 4 that holds nut, and described swivel nut 3 is to be inlaid in the described inner core 2.
Described inner core 2 inwalls are provided with a plurality of salient points 22 and are squeezed on described swivel nut 3 outer walls, form interference fit, adopt salient point not only to economize inner core 2 material requesteds but also be convenient to swivel nut 3 and are pressed into, and form certain combination force.
The length of described swivel nut 3 makes material consumption reduce less than the length of described inner core 2, can adapt to long bolt again, can insert in the space of swivel nut 3 tops as shown in Figure 3.
Flange 31 quantity on the described swivel nut are three and uniform, and the groove 21 on the described cylindrical shell is six and uniform.
Described protective cap cross section external frame can be circle shown in Figure 2, also can be the outer-hexagonal shape.
Claims (7)
1. a Bolt-protecting cap is characterized in that described protective cap is the cylindrical shell that an end seals an end opening, and opening one end is followed successively by the exocoel that holds nut from outside to inside and holds the screw of screw rod end along axis, and described screwhole diameter is less than described exocoel.
2. Bolt-protecting cap as claimed in claim 1 is characterized in that: described screw is arranged in the swivel nut, and the swivel nut outer wall is provided with axial ledge, and described swivel nut is to embed in the described cylindrical shell, and cylindrical shell is a groove corresponding to the position of swivel nut axial ledge.
3. Bolt-protecting cap as claimed in claim 2; it is characterized in that: described cylindrical shell comprises urceolus and inner core; inner core length is less than urceolus and be loaded on outer tube bottom; inner core and urceolus are fixed together; be positioned at inner core space in addition and constitute the described exocoel that holds nut in urceolus, described swivel nut is to be inlaid in the described inner core.
4. Bolt-protecting cap as claimed in claim 3 is characterized in that: described inner core inwall is provided with a plurality of salient points and is squeezed on the described swivel nut outer wall.
5. as claim 3 or 4 described Bolt-protecting caps, it is characterized in that: the length of described swivel nut is less than the length of described inner core.
6. as described Bolt-protecting cap one of in the claim 2 to 4, it is characterized in that: described number of flanges is three and uniform, and the groove on the described cylindrical shell is six and uniform.
7. as described Bolt-protecting cap one of in the claim 2 to 4, it is characterized in that: described protective cap cross section external frame is for circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201624150U CN202073904U (en) | 2011-05-20 | 2011-05-20 | Bolt protective cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201624150U CN202073904U (en) | 2011-05-20 | 2011-05-20 | Bolt protective cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073904U true CN202073904U (en) | 2011-12-14 |
Family
ID=45112008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201624150U Expired - Fee Related CN202073904U (en) | 2011-05-20 | 2011-05-20 | Bolt protective cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321544A (en) * | 2012-04-11 | 2015-01-28 | Prc-迪索托国际公司 | Nut plate seal caps |
-
2011
- 2011-05-20 CN CN2011201624150U patent/CN202073904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321544A (en) * | 2012-04-11 | 2015-01-28 | Prc-迪索托国际公司 | Nut plate seal caps |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20120520 |