CN202811773U - Bolt and nut component, and bolt - Google Patents
Bolt and nut component, and bolt Download PDFInfo
- Publication number
- CN202811773U CN202811773U CN 201220272373 CN201220272373U CN202811773U CN 202811773 U CN202811773 U CN 202811773U CN 201220272373 CN201220272373 CN 201220272373 CN 201220272373 U CN201220272373 U CN 201220272373U CN 202811773 U CN202811773 U CN 202811773U
- Authority
- CN
- China
- Prior art keywords
- bolt
- head
- hole
- nut
- axial hole
- 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 - Lifetime
Links
Images
Landscapes
- Dowels (AREA)
Abstract
The utility model discloses a bolt. The bolt comprises a head and a threaded rod connected with the head. The bolt also comprises an axial through hole, an inner rod and an expanding part, wherein the axial through hole runs through the head and the threaded rod; the inner rod is arranged in the axial through hole; and the expanding part is arranged at one end, far away from the head, of the inner rod and is used for radially expanding the axial through hole. During operation, the inner rod is sheathed in the axial through hole, the expanding part of the inner rod does not enter the axial through hole, the threaded rod part of the bolt penetrates through a mounting position hole, a nut is arranged at the penetrating end of the threaded rod, the inner rod moves towards the head direction, and the expanding part of the bolt extrudes the axial through hole, so that the cooperative compactness of the outer surface of the threaded rod and the nut is improved and the cooperative compactness of the bolt and the nut is effectively improved. The bolt is particularly suitable for the part which cannot assemble the nut; the fastening action is directly finished through the expanding effect of one end, far away from the head, of the threaded rod; the nut mount process is omitted; and the fastening process is facilitated. The utility model also provides a bolt and nut component with the bolt.
Description
Technical field
The utility model relates to the anchor design technical field, particularly a kind of bolt and nut component and bolt thereof.
Background technique
Bolt is present mechanical field a kind of fastening piece commonly used, is used for being fastenedly connected two or more parts with through hole.
Present bolt is fixedly connected with mode mostly and nut is used, pass the through hole of the required part that is fastenedly connected by the screw rod with bolt, the head of bolt and a side surface of part are fitted, and at an end mounting nuts of the screw rod that passes the part through hole, screw the effect that nut can reach two or more parts that fastening screw passes.
But in actual applications, the space that is used for construction bolt often is subjected to structural limitations, make the installation process difficulty of nut so that the space is too small, be unfavorable for nut is screwed, make the cooperation tightness of screw bolt and nut lower, when serious even can occur to install because of nut and not in placely cause nut in the device Long-term Vibration to occur from the phenomenon that the screw rod of bolt breaks away from.
Therefore, how to improve the cooperation tightness of bolt and nut, become those skilled in the art's problem demanding prompt solution.
The model utility content
In view of this, the utility model provides a kind of bolt, to improve the cooperation tightness of bolt and nut.The utility model also provides a kind of bolt and nut component with above-mentioned bolt.
For achieving the above object, the utility model provides following technological scheme:
A kind of bolt comprises head and the screw rod that is connected with described head, also comprises the axial hole that runs through described head and described screw rod;
Be arranged at the interior bar in the described axial hole;
Be arranged at described interior bar away from an end of described head, be used for the enlarged portion of the described axial hole of radial dilatation.
Preferably, described axial hole is the central through bore with internal thread, is provided with the outside thread that matches with described internal thread on the described interior bar.
Preferably, described axial hole is provided with inner conic hole away from an end of described head, and described enlarged portion is the cone enlarged portion suitable with described inner conic hole.
Preferably, the surface that is in contact with one another of described inner conic hole and described cone enlarged portion is the plane.
Preferably, the element of cone of described inner conic hole and its axis angle are 10 ° ~ 45 °.
Preferably, described interior bar is provided with the driver flutes of a word or cross near an end of described head.
Preferably, described screw rod is provided with axially extended gap away from an end of described head.
Preferably, described screw rod circumferentially is evenly equipped with 2-4 described gap away from an end of described head.
Preferably, the length of described interior bar is less than the length of described axial hole.
The utility model also provides a kind of bolt and nut component, comprises bolt and the nut that matches with described bolt, and described bolt is above-mentioned any bolt.
Can find out that from above-mentioned technological scheme the bolt that the utility model provides has the axial hole that runs through head and screw rod, and interior bar is set that interior bar is provided with enlarged portion for the radial dilatation axial hole away from an end of head in axial hole.In specific operation process, interior bar is sheathed in the axial hole, the enlarged portion of bar does not enter axial hole in this moment; The screw portion of bolt is passed the hole, mounting point, then at the traversing through end mounting nuts of screw rod, again by move interior bar to cephalad direction, make its enlarged portion extruding axial hole, thereby make the interior threaded hole of the outer surface lateral extrusion nut of screw rod, the tightness that the outer surface of screw rod is cooperated with nut improves, thus Effective Raise both cooperation tightnesss.
Further, the bolt that the utility model provides be particularly useful for can't assembling nut the position, by the dilating effect away from an end of the screw rod of head, directly finished fastening action, save necessity of mounting nuts, so that the carrying out of fastening process.
The utility model also provides a kind of bolt and nut component, comprises bolt and the nut that cooperates with bolt, and described bolt is above-mentioned any bolt.Because above-mentioned bolt has above-mentioned technique effect, the bolt and nut component with this bolt also should have corresponding technique effect.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the bolt that Fig. 1 provides for the utility model embodiment;
The screw rod of the bolt that Fig. 2 provides for the utility model embodiment and the structural representation of head;
The structural representation of the interior bar of the bolt that Fig. 3 provides for the utility model embodiment.
Embodiment
The utility model discloses a kind of bolt, to improve the cooperation tightness of bolt and nut.The utility model also provides a kind of bolt and nut component with above-mentioned bolt.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the structural representation of the bolt that provides for the utility model embodiment of Fig. 1.
The utility model embodiment provides a kind of bolt, comprises head 1 and the screw rod 2 that is connected with head 1, also comprises: the axial hole 3 that runs through head 1 and screw rod 2; Be arranged at the interior bar 4 in the axial hole 3; Be arranged at interior bar 4 away from an end of head 1, be used for the enlarged portion of radial dilatation axial hole 3.
Need to prove that above-mentioned enlarged portion can be for the expansion structure of maximum diameter greater than axial hole 3, such as cylindrical body or cone; Also can be for the expansion structure of maximum circumscribed circle diameter greater than axial hole 3, such as cuboid or triangle body; Also can be diameter or the circumscribed circle diameter expansion structure less than axial hole 3, its circumscribed circle diameter that cooperates with interior bar 4 is got final product greater than the diameter of axial hole 3, such as the cylindrical body of diameter less than axial hole 3, itself and interior bar 4 shift to install, the axis that is both does not overlap, make this cylindrical outermost edge stretch out the radial cross section edge of interior bar 4, both circumscribed circle diameters are greater than the diameter of axial hole 3; Can also enlarged portion be set to interior bar 4 disalignments as away from the outer wall of an end of head 1 lug boss being set at interior bar 4, in process of expansion, the point that lug boss contacts with axial hole 3 has reached the function of radial dilatation axial hole 3 equally to the distance of axial hole 3 radius greater than axial hole.
The bolt that the utility model embodiment provides has the axial hole 3 that runs through head 1 and screw rod 2, and interior bar 4 is set in that axial hole 3 is interior, and interior bar 4 is provided with enlarged portion for radial dilatation axial hole 3 away from an end of head 1.In specific operation process, interior bar 4 is sheathed in the axial hole 3, the enlarged portion of bar 4 does not enter axial hole 3 in this moment; Screw rod 2 parts of bolt are passed the hole, mounting point, then at the traversing through end mounting nuts of screw rod 2, again by move interior bar 4 to cephalad direction, make its enlarged portion extruding axial hole 3, thereby make the interior threaded hole of the outer surface lateral extrusion nut of screw rod 2, the tightness that the outer surface of screw rod 2 is cooperated with nut improves, thus Effective Raise both cooperation tightnesss.
Further, the bolt that the utility model provides be particularly useful for can't assembling nut the position, by the dilating effect away from an end of the screw rod 2 of head 1, directly finished fastening action, save necessity of mounting nuts, so that the carrying out of fastening process.
As shown in Figures 2 and 3, axial hole 3 is provided with inner conic hole 5 away from an end of head 1, and enlarged portion is the cone enlarged portion 6 suitable with inner conic hole 5.By moving interior bar 4 to head 1 direction, inner conic hole 5 and the area of overlap of cone enlarged portion 6 are increased gradually, so that screw rod 2 increases gradually away from an end radial dilatation degree of head 1, so that regulate the fastening degree of the bolt that this embodiment provides.
In the present embodiment, inner conic hole 5 is the plane with the surface that cone enlarged portion 6 is in contact with one another, so that course of working is simple.Can the flank of thread that match be set with on inner conic hole 5 and the surface that cone enlarged portion 6 is in contact with one another, concrete contact surface structure does not limit yet.
The bolt that the utility model embodiment provides preferably element of cone and its axis angle of inner conic hole 5 is set to 10 ° ~ 45 °.
For the demand of scalable application, interior bar 4 is provided with the driver flutes of a word or cross near an end of head 1.In the process that interior bar 4 is moved to head 1 direction, select the screw-driver corresponding with driver flutes to operate, be about to this screw-driver and stretch into from the end of axial hole 3 near head 1, cooperate with the driver flutes of interior bar 4 to contact, bit rotary screwdriver can be finished the movement of interior bar 4.This design can be finished fastening operation at the bolt installation side, has further avoided because of the too small operating difficulties that causes in fastening side operating space.Above-mentioned installation side is a side that wears bolt, and namely near a side of head 1, fastening side is to need mounting nuts or need the fastening side of screw rod 2 self, namely away from a side of head 1.
In order to improve the radial dilatation degree of screw rod 2 in the fastening process, preferably be provided with axially extended gap 7 at screw rod 2 away from an end of head 1.By cone enlarged portion 6 extruding inner conic holes 5, inner conic hole 5 passes to screw rod 2 away from an end of head 1 with lateral extrusion power, and because the existence of gap 7 makes screw rod 2 further increase away from the radial dilatation degree of an end of head 1, thereby improved fastening degree.
Consider when improving fastening degree, also need guarantee the intensity of bolt, preferably circumferentially be evenly equipped with 2-4 gap 7 at screw rod 2 away from an end of described head 1.
In order to make bolt that the utility model embodiment provides in that the rear surface is installed is smooth, the length of interior bar 4 is less than the length of axial hole 3, namely finish fastening rear interior bar 4 and do not stretch out axial hole 3, smooth to guarantee that bolt is installed the rear surface, avoid interior bar 4 and the external world unnecessary contact the bolt looseness that causes.
The utility model embodiment also provides a kind of bolt and nut component, comprises bolt and the nut that matches with bolt, and described bolt is above-mentioned any described bolt.Because above-mentioned bolt has above-mentioned technique effect, the bolt and nut component with this bolt also should have corresponding technique effect.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a bolt comprises head (1) and the screw rod (2) that is connected with described head (1), it is characterized in that, also comprises:
The axial hole (3) that runs through described head (1) and described screw rod (2);
Be arranged at the interior bar (4) in the described axial hole (3);
Be arranged at described interior bar (4) away from an end of described head (1), be used for the enlarged portion of the described axial hole of radial dilatation (3).
2. bolt as claimed in claim 1 is characterized in that, described axial hole (3) is provided with the outside thread that matches with described internal thread for having the central through bore of internal thread on the described interior bar (4).
3. bolt as claimed in claim 1 is characterized in that, described axial hole (3) is provided with inner conic hole (5) away from an end of described head (1), and described enlarged portion is the cone enlarged portion (6) suitable with described inner conic hole (5).
4. bolt as claimed in claim 3 is characterized in that, described inner conic hole (5) is the plane with the surface that described cone enlarged portion (6) is in contact with one another.
5. bolt as claimed in claim 3 is characterized in that, the element of cone of described inner conic hole (5) and its axis angle are 10 ° ~ 45 °.
6. bolt as claimed in claim 2 is characterized in that, described interior bar (4) is provided with the driver flutes of a word or cross near an end of described head (1).
7. bolt as claimed in claim 1 is characterized in that, described screw rod (2) is provided with axially extended gap (7) away from an end of described head (1).
8. bolt as claimed in claim 7 is characterized in that, described screw rod (2) circumferentially is evenly equipped with 2-4 described gap (7) away from an end of described head (1).
9. such as each described bolt of claim 1-8, it is characterized in that the length of described interior bar (4) is less than the length of described axial hole (3).
10. a bolt and nut component comprises bolt and the nut that matches with described bolt, it is characterized in that, described bolt is such as each described bolt of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220272373 CN202811773U (en) | 2012-06-11 | 2012-06-11 | Bolt and nut component, and bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220272373 CN202811773U (en) | 2012-06-11 | 2012-06-11 | Bolt and nut component, and bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811773U true CN202811773U (en) | 2013-03-20 |
Family
ID=47870652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220272373 Expired - Lifetime CN202811773U (en) | 2012-06-11 | 2012-06-11 | Bolt and nut component, and bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307232A (en) * | 2019-07-03 | 2019-10-08 | 王仲文 | A kind of screw for preventing from loosening |
-
2012
- 2012-06-11 CN CN 201220272373 patent/CN202811773U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307232A (en) * | 2019-07-03 | 2019-10-08 | 王仲文 | A kind of screw for preventing from loosening |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202811769U (en) | Wire thread insert | |
| CA2728770C (en) | Radially expanding bolt assembly | |
| CN103522255B (en) | A kind of Automatic tightener of stud | |
| CN201723552U (en) | Novel fast nut | |
| CN203051401U (en) | Bolt capable of being easily clamped and dismantled | |
| CN204610516U (en) | Abnormity lock nut | |
| CN202811773U (en) | Bolt and nut component, and bolt | |
| CN202780086U (en) | Adjustable threading die sleeve | |
| CN202883626U (en) | Double-threaded screw | |
| CN203670399U (en) | Locking bolt | |
| CN204295628U (en) | Nut and the special tool for turning this nut | |
| CN207454481U (en) | A kind of anti-drop bolt component | |
| CN201593546U (en) | Self-locking flare-in nut | |
| CN203906511U (en) | Combined stop nut and bolt assembly thereof | |
| CN202646306U (en) | Anti-slip rivet nut | |
| CN203257845U (en) | Fastening barrel for combining parts on model | |
| CN203420984U (en) | Adjustable rotary fixing bolt | |
| CN201552546U (en) | Decapitated bolt extractor | |
| CN204572727U (en) | The locking EXPANSION ANCHOR BOLTS of a kind of tube-expanding type | |
| CN105090210A (en) | Double-rotation-direction bolt | |
| CN201606371U (en) | Positioning pin | |
| CN105240376A (en) | Novel butterfly bolt | |
| CN105317809A (en) | Dedicated combined nut | |
| CN201834051U (en) | Adjusting structure of steering tie rod assembly of automobile | |
| CN202991801U (en) | Screw lost-prevention device for actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |