CN2399549Y - Loose-proof bolt group II - Google Patents
Loose-proof bolt group II Download PDFInfo
- Publication number
- CN2399549Y CN2399549Y CN 99252411 CN99252411U CN2399549Y CN 2399549 Y CN2399549 Y CN 2399549Y CN 99252411 CN99252411 CN 99252411 CN 99252411 U CN99252411 U CN 99252411U CN 2399549 Y CN2399549 Y CN 2399549Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- spring washer
- notch
- loose
- lax
- 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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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model relates to an anti-loose bolt group II, which comprises a bolt, a spring washer and a screw. The utility model is characterized in that the upper edge of a screw rod of the bolt is longitudinally provided with a notch and one end of the opening of the spring washer is provided with a convex key stopping movement. The convex key stopping movement of the spring washer is matched with the screw and the notch of the bolt or the convex key stopping movement of the spring washer is matched with the notch of the bolt and the blind hole of an assembly to be connected to realize movement stop and the anti-loose purpose. The utility model has the characteristics of simple structure, easy manufacture, low cost, tighten reliability, good anti-loose effect, convenient disassembly and assembly, etc.
Description
A kind of anti-lax bolt group II type that relates to fastening piece.
Existing a kind of anti-lax bolt group is matched by two ditch slot bolts and the spring washer with two interior stops and nut that end face is helical teeth shape draw-in groove and forms.The deficiency of this anti-lax bolt group is, the manufacturing process complexity, and stock utilization is low, and is time-consuming, and the manufacture cost height is not easy to dismounting, causes the damage of part in addition such as nut, spring washer during dismounting.
The purpose of this utility model is existing anti-lax bolt group is carried out technological improvement, and a kind of manufacturing simple in structure, easy is provided, and cost is low, and is fastening reliable, easy-to-mount anti-lax bolt group II type.
The purpose of this utility model is realized by following technological scheme: a kind of anti-lax bolt group II type, it comprises bolt 1, is placed on the spring washer 4 on the bolt 1, the nut 2 that is connected with bolt 1, it is characterized in that: a notch 5 longitudinally is set on the screw rod 3 of bolt 1, end at spring washer 4 openings is provided with the protruding key 6 of stop, and the protruding key 6 of the stop of spring washer 4 matches with the notch 5 and the nut 2 of bolt 1.
The protruding key 6 of the stop of said spring washer 4 matches with the notch 5 of bolt 1 and coupled 7 blind hole 8.
The advantage applies of anti-lax bolt group II type of the present utility model exists:
1, because the notch that adopts bolt and the protruding key of the stop of spring washer and nut matches or the notch of bolt and the protruding key of the stop of spring washer and coupled 's blind hole matches structure, satisfy frictional force and mechanical force acting in conjunction in the condition of coupling assembly, that is: axial force, torsional couple reach radially static pressure acting in conjunction in one, under the effect of any impact, shock loads, nut can not become flexible yet, fastening reliable, anti-lax effective.
2, the protruding bond structure of the stop of the notch of bolt, spring washer is simple, makes easily, and cost is low.
3, be convenient to dismounting, long service life.
Below in conjunction with embodiment shown in the drawings the utility model is described in detail.
Fig. 1 is anti-lax bolt group II type structural representation of the embodiment 1.
Fig. 2 is an A-A cross-sectional schematic among Fig. 1.
Fig. 3 is anti-lax bolt group II type structural representation of the embodiment 2.
Fig. 4 is anti-lax bolt group II type structural representation of the embodiment 3.
Fig. 5 is the protruding key 6 inside male structure schematic representation of the stop of spring washer 4.
Fig. 6 is the schematic side view of Fig. 5.
Fig. 7 is the protruding key 6 outside male structure schematic representation of the stop of spring washer 4.
Fig. 8 is the schematic side view of Fig. 7.
With reference to Fig. 1,2,5-8, on the screw rod 3 of the bolt 1 of anti-lax bolt group II type single notch 5 is set longitudinally, be that regular screw threads are example with bolt 1, the degree of depth of notch 5 is 5/8H, (wherein: H is a screw thread original triangle height).To satisfy the regulation of NBS, guarantee the bolt strength requirement.Spring washer 4 adopts square or coil component spring bar, uses special-purpose mold to bend, and the protruding key 6 of spring washer 4 has dual mode, and a kind of is to convex, and this kind mode of structure is used for the structure that matches with nut 2; Another kind is to evagination, and this mode of structure is used for the structure that matches with coupled 7 blind hole 8, and nut 2 is a standard piece.During use, bolt 1 stretched in coupled 7 the hole, again spring washer 4 is placed on the bolt 1, the protruding key 6 of spring washer 4 is inserted in the notch 5 of bolt 1, nut 2 is screwed on the screw rod 3 of bolt 1, the protruding key 6 of nut 2 extrusion spring packing rings 4 is secured in the notch 5 of screw rod 3 protruding key 6 again, to realize the anti-lax firm self-locking of bolt group II type, never lax.
With reference to Fig. 3, when heavy duty, can increase nut 2, improve the required fastening force of heavy burden.At this moment, spring washer 4 places between two nuts 2.
With reference to Fig. 4, when bolt 1 is stud bolt, can adopt the protruding key 6 cambered outwards structures of spring washer 4, make the protruding key 6 that places the spring washer 4 in bolt 1 notch 5 and coupled 7 blind hole 8 match the anti-lax bolt group II type of incompatible realization self-locking, prevent to become flexible.
Claims (2)
1, a kind of anti-lax bolt group II type, it comprises bolt (1), is placed on the spring washer (4) on the bolt (1), the nut (2) that is connected with bolt (1), it is characterized in that: on the screw rod (3) of bolt (1), a notch (5) is set longitudinally, end at spring washer (4) opening is provided with the protruding key of stop (6), and the protruding key of stop (6) of spring washer (4) matches with the notch (5) of bolt (1) and nut (2).
2, anti-lax bolt group II type according to claim 1, it is characterized in that: the protruding key of stop (6) of said spring washer (4) matches with the blind hole (8) of the notch (5) of bolt (1) and coupled (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99252411 CN2399549Y (en) | 1999-12-28 | 1999-12-28 | Loose-proof bolt group II |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99252411 CN2399549Y (en) | 1999-12-28 | 1999-12-28 | Loose-proof bolt group II |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2399549Y true CN2399549Y (en) | 2000-10-04 |
Family
ID=34036629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99252411 Expired - Fee Related CN2399549Y (en) | 1999-12-28 | 1999-12-28 | Loose-proof bolt group II |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2399549Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408867C (en) * | 2003-08-26 | 2008-08-06 | 株式会社大福 | Jointing device |
| CN113389798A (en) * | 2021-07-21 | 2021-09-14 | 三马紧固件(浙江)股份有限公司 | Special novel locknut subassembly of railway |
-
1999
- 1999-12-28 CN CN 99252411 patent/CN2399549Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408867C (en) * | 2003-08-26 | 2008-08-06 | 株式会社大福 | Jointing device |
| CN113389798A (en) * | 2021-07-21 | 2021-09-14 | 三马紧固件(浙江)股份有限公司 | Special novel locknut subassembly of railway |
| CN113389798B (en) * | 2021-07-21 | 2022-11-18 | 三马紧固件(浙江)股份有限公司 | Special novel locknut subassembly of railway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |