CN2578594Y - Eccentric screw bolt against loose - Google Patents
Eccentric screw bolt against loose Download PDFInfo
- Publication number
- CN2578594Y CN2578594Y CN 02288890 CN02288890U CN2578594Y CN 2578594 Y CN2578594 Y CN 2578594Y CN 02288890 CN02288890 CN 02288890 CN 02288890 U CN02288890 U CN 02288890U CN 2578594 Y CN2578594 Y CN 2578594Y
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- CN
- China
- Prior art keywords
- screw rod
- gear wheel
- eccentric
- screw
- pressure spring
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- 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 an eccentric screw bolt against loose, which comprises a screw bolt cap and a connector, wherein, the screw bolt cap is connected with the connector into a whole. The inner part of the connector is axially provided with an eccentric screw hole, and a screw rod is arranged in the eccentric screw hole. One end of the screw bolt cap is provided with a cone chamber and a pressure spring chamber, wherein, the inner part of the cone chamber is provided with a fixed cone and a sliding cone, and the inner part of the pressure spring chamber is provided with a pressure spring. One end of the screw rod is provided with an eccentric screw tray, and the other end of the screw rod is successively sheathed with the pressure spring, the sliding cone and the fixed cone. A first step self-lock is formed by the screw connection between the screw rod and the connector, and a further self-lock of the screw bolt is realized through the positioning boss formed on the right side of the screw bolt and the eccentric screw; thus, the anti-loose and anti-theft functions are more reliable. The operating state and the self-locking state of the screw bolt can be realized through a special spanner, and the anti-loose and anti-theft functions of the utility model are preferable than that of the existing various self-locking screw bolts and screw nuts.
Description
Technical field
The utility model relates to a kind of secure component, especially the slanting teeth type chek bolt.
Background technique
In secure component commonly used, bolt is the very general secure component of a kind of purposes, and purposes is very extensive.As aspect the railway transport, continuous speed-raising along with railway, locomotive is in operation and often is in a kind of strong vibrations, and especially when the compartment lade moved, motor car upper gear box and traction electric machine bolt were because loosening phenomenon can constantly take place for weight and vibrations.Spindle nose bolt on the vehicle often comes off especially, has a strong impact on the normal operation of locomotive and vehicle, has hidden danger, has increased the maintenance workload of locomotive and vehicle greatly, has reduced the economic benefit of railway interests.
In electric power, oil field department bolt often taking place also is disassembled phenomenon, open-air equipment is often therefore stolen, cause huge economic loss for country and enterprise, other all trades and professions all have this type of problem, also do not have fine or quite reasonable locking, anti-theft bolt at present.Plain bolt adds spring washer can not satisfy the requirement of above-mentioned all departments as locking measure, and for this reason, people have proposed locking, the theft preventing method of many kinds of bolts, nut for many years.For example: the method for expander is set in bolt inside, and fatigue fracture easily takes place in the method, causes the body nut to scrap; For another example since 1993, once reported a kind ofly cam and spring washer to be fixed on that bolt is inner realizes self-locking by small screw, but this self-locking has caused spring washer fatigue and cam to return pine and lose self-lock ability easily.
Summary of the invention
The purpose of this utility model provides a kind of rational in infrastructure, easily manufactured locking, anti-theft bolt, and it has high strength and high reliability, has overcome the prior art above shortcomings.
The purpose of this utility model is achieved in that and includes nuts and connecting body, described nuts is connected with the connecting body one, be axially arranged with eccentric screwhole in the described connecting body, be provided with screw rod in the eccentric screwhole, be provided with gear wheel chamber and pressure spring chamber at nuts one end, gear wheel chamber and pressure spring chamber communicate with eccentric screwhole is coaxial, indoor fixed-cutter and the slip gear wheel of being provided with of described gear wheel, the indoor pressure spring that is provided with of described pressure spring, one end of described screw rod is provided with eccentric spiral shell dish, the other end is polygonal screw rod, is set with pressure spring successively at polygonal screw rod one end, slip gear wheel and fixed-cutter.
Described fixed-cutter and slip gear wheel are plane sawtooth gear wheel, and the diameter of fixed-cutter is greater than the diameter of slip gear wheel.
One end of described screw rod and screw rod are integrally formed with eccentric spiral shell dish, are provided with positioning boss between eccentric spiral shell dish and screw rod, and polygonal one end of described screw rod is hexagonal six square toes.
The inwall of described eccentric screwhole upper end is provided with thin button screw thread, also be provided with on the described screw rod with eccentric screwhole in the thin button screw thread of thin button threads engaged, screw rod by thin button screw thread spinning in eccentric screwhole.
Described fixed-cutter is provided with boss.
The diameter of described gear wheel chamber circumferentially has groove greater than the diameter of pressure spring chamber in the upper edge of gear wheel chamber.
The center of described slip gear wheel is provided with the hexagonal screw.
The diameter of described eccentric spiral shell dish is identical with the diameter of connecting body.
Because the utility model has adopted said structure, compared with prior art has the following advantages: have the locking, antitheft of high strength, high reliability; Rational in infrastructure, manufacturing process is simple and convenient, easier large-scale popularization; Form first step self-locking by being threaded between screw rod and the connecting body, the further self-locking that positioning boss of making by screw rod right side car and eccentric spiral shell dish are realized bolt, make locking, anti-theft feature is more reliable; Realize the working state and the self-locking state of bolt by special spanner, further realized locking, the anti-theft feature of bolt, and locking, anti-theft feature is better than existing various self-locking screw and nut.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the B-B of Fig. 1 is to sectional view;
Fig. 3 is that the A of Fig. 1 is to schematic representation;
Fig. 4 is a pressure spring schematic representation of the present utility model;
Fig. 5 is a screw rod schematic representation of the present utility model;
Fig. 6 is a fixed-cutter schematic representation of the present utility model;
Fig. 7 is a sliding gear schematic representation of the present utility model;
Fig. 8 is the sectional view of fixed-cutter of the present utility model.
Among the figure: 1. nuts; 2. fixed-cutter; 3. slip gear wheel; 4. pressure spring; 5. screw rod; 6. eccentric spiral shell dish; 7. positioning boss; 8. eccentric screwhole; 9. gear wheel chamber; 10. pressure spring chamber; 11. six square toes; 12. boss, 13. grooves; 14. connecting body.
Embodiment
At first in connecting body 14, in axial direction open an eccentric screwhole 8, be provided with screw rod 5 in the eccentric screwhole 8, in nuts 1, offer gear wheel chamber 9 and pressure spring chamber 10, gear wheel chamber 9 and pressure spring chamber 10 and eccentric screwhole 8 coaxial communicating, and the diameter of gear wheel chamber 9 is greater than the diameter of pressure spring chamber 10, upper edge in gear wheel chamber 9 circumferentially has groove 13, fixed-cutter 2 and slip gear wheel 3 are installed in the gear wheel chamber 9, fixed-cutter 2 is provided with boss 12 and cooperates with groove 13, fixed-cutter 2 wherein and slip gear wheel 3 are plane sawtooth gear wheel, and the diameter of fixed-cutter 2 is greater than the diameter of slip gear wheel 3.Pressure spring 4 is installed in the pressure spring chamber 10, and an end of screw rod 5 and screw rod 5 are integrally formed with eccentric spiral shell dish 6, and the other end is set with pressure spring 4, slip gear wheel 3 and fixed-cutter 2 successively.An end and screw rod 5 at screw rod 5 are integrally formed with eccentric spiral shell dish 6, are provided with positioning boss 7 between eccentric spiral shell dish 6 and screw rod 5, and it is solid and reliable that eccentric spiral shell dish 6 is made in rotation, can not rock, and the diameter of eccentric spiral shell dish 6 is identical with the diameter of connecting body 14.On the inwall of eccentric screwhole 8 upper ends, be provided with thin button screw thread, on screw rod 5, also be provided with eccentric screwhole 8 in the thin button screw thread of thin button threads engaged, screw rod 5 is by carefully detaining the screw thread spinning in eccentric screwhole 8 like this.The other end at screw rod 5 is provided with six square toes 11, and the center of slip gear wheel 3 is provided with the hexagonal screw and matches with six square toes 11 of screw rod 5, and slip gear wheel 3 can be rotated with screw rod 5 synchronously by six square toes 11.
When installing and using, at first screw rod 5 is gone in the eccentric screwhole 8 of connecting body 14 by the thin button screw thread spinning on it, then at the nuts 1 one ends pressure spring 4 of packing into, pressure spring 4 is installed in the pressure spring chamber 10 and is enclosed within on the screw rod 5, the sawtooth true dip direction of plane sawtooth fixed-cutter 2 and plane sawtooth slip gear wheel 3 is opposite, their relatively in conjunction with after pack in the gear wheel chamber 9, because of the diameter of fixed-cutter 2 diameter greater than slip gear wheel 3, the diameter of fixed-cutter 2 is a bit larger tham the bore of gear wheel chamber 9 again, so needing the pressure by certain tonnage packs fixed-cutter 2 in the gear wheel chamber 9 into, upper edge in gear wheel chamber 9 circumferentially has groove 13, fixed-cutter 2 is provided with boss 12 and cooperates with groove 13, fixed-cutter 2 is excessively cooperated with nuts 1, and structure is more solid and reliable.Entangle six square toes 11 of screw rod 5 during use by special interior six side's special spanners, pushing slip gear wheel 3 breaks away from itself and fixed-cutter 2, by interior six side's special spanners screw rod 5 is rotated in a clockwise direction 25 °-45 ° then, because eccentric center principle, the eccentric spiral shell dish 6 of screw rod 5 the other ends is tightly leaned on nut inner wall, form self-locking state, in order to ensure the unslow button of self-locking, the sawtooth tooth of slip gear wheel 3 under the effect of pressure spring 4 all the time with the sawtooth tooth interlock of fixed-cutter 2, guarantee that self-locking is firm and can not delay button, reach the self-locking purpose well.The diameter of eccentric spiral shell dish 6 is general identical with the diameter of connecting body 14, but also can determine the size of eccentric spiral shell dish 6 diameters according to the gap between the bolts and nuts.Screw rod 5 rotate in the counterclockwise direction by interior six side's special spanners when unblanking, can unload lower nut after making eccentric spiral shell dish 6, connecting body 14 and nut concentric.Anti-slow, anti-theft bolt of the present utility model is by the formation first step self-locking that is threaded in screw rod 5 and the connecting body 14, positioning boss of making by screw rod 5 right side cars 7 and eccentric spiral shell dish 6 are realized the further self-locking of bolts, the sawtooth tooth of the slip gear wheel 3 in this process in the gear wheel chamber 9 under the effect of pressure spring 4 be fixed on nuts 1 on the sawtooth tooth interlock mutually of fixed-cutter 2, guaranteed that self-locking is firm and can not delay button, make locking, anti-theft feature is more reliable.
Claims (8)
1. slanting teeth type chek bolt, include nuts (1) and connecting body (14), described nuts (1) is connected with connecting body (14) one, it is characterized in that: be axially arranged with eccentric screwhole (8) in the described connecting body (14), be provided with screw rod (5) in the eccentric screwhole (8), be provided with gear wheel chamber (9) and pressure spring chamber (10) at nuts (1) one end, gear wheel chamber (9) and pressure spring chamber (10) and coaxial the communicating of eccentric screwhole (8), be provided with fixed-cutter (2) and slip gear wheel (3) in the described gear wheel chamber (9), be provided with pressure spring (4) in the described pressure spring chamber (10), one end of described screw rod (5) is provided with eccentric spiral shell dish (6), the other end is polygonal screw rod, is set with pressure spring (4) successively at polygonal screw rod one end, slip gear wheel (3) and fixed-cutter (2).
2. slanting teeth type chek bolt according to claim 1 is characterized in that: described fixed-cutter (2) and slip gear wheel (3) are plane sawtooth gear wheel, and the diameter of fixed-cutter (2) is greater than the diameter of slip gear wheel (3).
3. slanting teeth type chek bolt according to claim 1, it is characterized in that: an end of described screw rod (5) and screw rod (5) are integrally formed with eccentric spiral shell dish (6), be provided with positioning boss (7) between eccentric spiral shell dish (6) and screw rod (5), polygonal one end of described screw rod (5) is hexagonal six square toes (11).
4. slanting teeth type chek bolt according to claim 1, it is characterized in that: the inwall of described eccentric screwhole (8) upper end is provided with thin button screw thread, also be provided with on the described screw rod (5) and the interior thin thin button screw thread of detaining threads engaged of eccentric screwhole (8), screw rod (5) passes through the thin screw thread spinning of detaining in eccentric screwhole (8).
5. slanting teeth type chek bolt according to claim 1 and 2 is characterized in that: described fixed-cutter (2) is provided with boss (12).
6. slanting teeth type chek bolt according to claim 1 is characterized in that: the diameter of described gear wheel chamber 9 circumferentially has groove greater than the diameter of pressure spring chamber 10 in the upper edge of gear wheel chamber 9.
7. slanting teeth type chek bolt according to claim 1 and 2 is characterized in that: the center of described slip gear wheel (3) is provided with the hexagonal screw.
8. slanting teeth type chek bolt according to claim 1 is characterized in that: the diameter of described eccentric spiral shell dish (6) is identical with the diameter of connecting body (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288890 CN2578594Y (en) | 2002-11-28 | 2002-11-28 | Eccentric screw bolt against loose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288890 CN2578594Y (en) | 2002-11-28 | 2002-11-28 | Eccentric screw bolt against loose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578594Y true CN2578594Y (en) | 2003-10-08 |
Family
ID=33748612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02288890 Expired - Fee Related CN2578594Y (en) | 2002-11-28 | 2002-11-28 | Eccentric screw bolt against loose |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578594Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102770941A (en) * | 2010-02-22 | 2012-11-07 | 朗姆研究公司 | Flush mounted fastener for plasma processing apparatus |
| CN102777474A (en) * | 2012-07-23 | 2012-11-14 | 冯新永 | Anti-theft bolt set for motor of oil pumping unit |
| CN109538607A (en) * | 2018-12-28 | 2019-03-29 | 天津市耐特家具有限公司 | Direct connection bolt and plate connecting piece |
-
2002
- 2002-11-28 CN CN 02288890 patent/CN2578594Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102770941A (en) * | 2010-02-22 | 2012-11-07 | 朗姆研究公司 | Flush mounted fastener for plasma processing apparatus |
| CN102770941B (en) * | 2010-02-22 | 2015-05-13 | 朗姆研究公司 | Flush mounted fastener for plasma processing apparatus |
| CN102777474A (en) * | 2012-07-23 | 2012-11-14 | 冯新永 | Anti-theft bolt set for motor of oil pumping unit |
| CN109538607A (en) * | 2018-12-28 | 2019-03-29 | 天津市耐特家具有限公司 | Direct connection bolt and plate connecting piece |
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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 |