CN205190485U - A locking sealing bolt structure for on derailleur - Google Patents
A locking sealing bolt structure for on derailleur Download PDFInfo
- Publication number
- CN205190485U CN205190485U CN201520894087.1U CN201520894087U CN205190485U CN 205190485 U CN205190485 U CN 205190485U CN 201520894087 U CN201520894087 U CN 201520894087U CN 205190485 U CN205190485 U CN 205190485U
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- bolt body
- mission case
- nuts
- bolt
- derailleur
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Abstract
The utility model discloses a sealed better a locking sealing bolt structure for on derailleur of effect, its bolt body (1) is less than this aluminum -plastic laminated tube and downwardly extending's shank of bolt (1 -2) bottom this aluminum -plastic laminated tube including aluminum -plastic laminated tube (1 -1) and diameter, the shank of bolt periphery is covered with screw thread (1 -3), be equipped with screw hole (5 -1) on derailleur box (5), screw hole sealing connection on the screw thread of the shank of bolt of bolt body and the derailleur box stretches into in the derailleur box: the aluminum -plastic laminated tube's of bolt body bottom surface is equipped with the annular bulge (1 -4) of at least one downward bulge, and the hardness of bolt body is greater than the hardness of derailleur box, the annular bulge of the downward bulge of the aluminum -plastic laminated tube's of bolt body bottom surface and the sealed laminating of the upper surface of derailleur box.
Description
Technical field
The utility model relates to speed changer sealing configuration, is specifically related to a kind of Anti-loosen sealing bolt structure on speed changer.
Background technique
The part of many bearings and so on is installed in the mission case of automotive transmission.These parts are connected with it by entering in mission case outward after needing to adopt the bolt body 1 of bolt to be connected with the tapped hole on mission case, are fixed and are installed in mission case.Because bolt body 1 is connected with the tapped hole on mission case, gap will be there is between bolt body 1 and tapped hole.Thus, run up in process at speed changer, the oil in mission case will, from the gap between bolt body 1 and tapped hole to external leakage, cause sealing effect poor.For solving the poor problem of sealing, the utility model patent that the patent No. is 201420328843.X, the applying date is on June 19th, 2014, discloses a kind of Anti-loosen sealing bolt of many grooves.See Fig. 1, it comprises bolt body 1, the head supporting surface (i.e. the bottom surface of the nuts of bolt body 1) of bolt body 1 is provided with at least one groove 2 and is located on the head supporting surface of bolt body 1 and is positioned at the outer ring groove 4 in the outside of groove 2, is coated with gel coating 3 on the surface of groove 2.This gel coating 3 is for locking or sealing.This Anti-loosen sealing bolt needs rubberised layer 3 just can reach sealing effect, if gel coating 3 gluing used is more, gluing just easily spills into outside, if gel coating 3 glue used is coated with less, does not have again the effect of sealing.And that gel coating 3 glue used is coated with is many and few, be by manually-operated.Thus, the many and unmanageable problem less having that glue used is coated with.If it is many and against regulation less that glue used is coated with, locking or that sealing effect is poor defect will be there is.
Model utility content
The technical problems to be solved in the utility model is to provide the Anti-loosen sealing bolt structure of a kind of sealing effect preferably on speed changer.
For solving the problems of the technologies described above, the utility model takes following technological scheme;
A kind of Anti-loosen sealing bolt structure on speed changer, comprise bolt body and mission case, described bolt body comprises nuts and diameter and is less than this nuts and by the bolt shank to downward-extension bottom this nuts, described bolt shank periphery is covered with screw thread, described mission case is provided with tapped hole, tapped hole on the screw thread of the bolt shank of described bolt body and mission case is tightly connected and stretches in mission case: the bottom surface of the nuts of described bolt body is provided with at least one annular projection protruded downwards, the hardness of described bolt body is greater than the hardness of mission case, the annular projection of the downward protrusion of the bottom surface of the nuts of described bolt body and the upper surface of mission case 5 seal fits.
Preferably, the bottom surface of the nuts of described bolt body 1 is provided with two or three annular projections protruded downwards.
Preferably, the cross section of described annular projection is semicircle or half elliptic or parabola shaped.
Preferably, described bolt body entirety is made up of carbon steel or stainless steel, and described mission case 5 entirety is made up of aluminum alloy.
Compared with prior art, the utility model comprises following beneficial effect;
Bottom surface due to the nuts of bolt body described in the utility model is provided with at least one annular projection protruded downwards, the hardness of described bolt body is greater than the hardness of mission case, and the annular projection of the downward protrusion of the bottom surface of the nuts of described bolt body and the upper surface of mission case seal fits.Thus, after bolt body 1 of the present invention is tightened, the annular projection of the bottom surface of nuts to be just embedded in the upper surface of mission case and the bottom surface of nuts and the upper surface of mission case is formed and well seals laminating.Thus, run up in process at speed changer, the oil in mission case would not from the gap between bolt body and tapped hole to external leakage, and sealing effect is better.Therefore, the utility model does not need prior art to use glue painting just to have good sealing like that.Simultaneously, when the annular projection of the bottom surface of nuts is embedded in the upper surface of mission case the bottom surface of nuts and the upper surface area of contact of mission case larger, frictional force is also larger, under the effect of frictional force, can prevent bolt body rotary type of the present invention from loosening preferably and loosen with non-rotating type.In addition, the utility model does not need the effect with using sealer and sealing gasket just can reach sealing, and operate more convenient, cost is also lower.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Anti-loosen sealing bolt of many grooves in background technique;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the structural representation of bolt body of the present utility model;
Fig. 4 is the enlarged diagram at the I place of Fig. 2.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
See Fig. 2, Fig. 3 and Fig. 4, Anti-loosen sealing bolt structure on speed changer of the present utility model, comprise bolt body 1 and mission case 5, described bolt body 1 comprises nuts 1-1 and diameter and is less than this nuts 1-1 and by the bolt shank 1-2 to downward-extension bottom this nuts 1-1, described bolt shank 1-2 periphery is covered with screw thread 1-3, described mission case 5 is provided with tapped hole 5-1, and the tapped hole 5-1 on the screw thread 1-3 of the bolt shank 1-2 of described bolt body 1 and mission case 5 is tightly connected and stretches in mission case 5.From Fig. 2, Fig. 3 and Fig. 4, the bottom surface of the nuts 1-1 of bolt body 1 described in the utility model is provided with at least one annular projection 1-4 protruded downwards, the hardness of described bolt body 1 is greater than the hardness of mission case 5, and the annular projection 1-4 of downward protrusion of the bottom surface of the nuts 1-1 of described bolt body 1 and the upper surface of mission case 5 seal fits.Thus, after bolt body 1 of the present utility model is tightened, the annular projection 1-4 of the bottom surface of nuts 1-1 to be just embedded in the upper surface of mission case 5 and the upper surface of the bottom surface of nuts 1-1 and mission case 5 is formed and well seals laminating.Thus, run up in process at speed changer, the oil in mission case would not from the gap between bolt body 1 and tapped hole to external leakage, and sealing effect is better.Therefore, the utility model does not need prior art to use glue painting just to have good sealing like that.Simultaneously, when the annular projection 1-4 of the bottom surface of nuts 1-1 is embedded in the upper surface of mission case 5 bottom surface of nuts 1-1 and the upper surface area of contact of mission case 5 larger, frictional force is also larger, under the effect of frictional force, can prevent bolt body 1 rotary type of the present utility model from loosening preferably and loosen with non-rotating type.In addition, the utility model does not need the effect with using sealer and sealing gasket just can reach sealing, and operate more convenient, cost is also lower.
From Fig. 2, Fig. 3 and Fig. 4, the bottom surface of the nuts 1-1 of described bolt body 1 is provided with two or three annular projection 1-4 protruded downwards.This makes sealing effect of the present utility model better.Certainly, the bottom surface of described nuts 1-1 also can be provided with three annular projection 1-4.This makes sealing effect of the present invention better equally.
From Fig. 3 and Fig. 4, the cross section of described annular projection 5-1 is semicircle.The present invention is made to have better locking and sealing effect like this.Certainly, described annular projection 1-4 also can be half elliptic or parabola shaped.This makes the utility model have better locking and sealing effect equally.
Described bolt body 1 entirety is made up of carbon steel or stainless steel, and described mission case 5 entirety is made up of aluminum alloy.After this makes bolt body 1 of the present utility model be tightened, the annular projection 1-4 of the bottom surface of nuts 1-1 to be embedded in comparalive ease in the upper surface of mission case 5 and the upper surface of the bottom surface of nuts 1-1 and mission case 5 is formed and well seals laminating.
Claims (4)
1. the Anti-loosen sealing bolt structure on speed changer, comprise bolt body (1) and mission case (5), described bolt body (1) comprises nuts (1-1) and diameter and is less than this nuts (1-1) and by the bolt shank (1-2) of this nuts (1-1) bottom to downward-extension, described bolt shank (1-2) periphery is covered with screw thread (1-3), described mission case (5) is provided with tapped hole (5-1), the screw thread (1-3) of the bolt shank (1-2) of described bolt body (1) is tightly connected with the tapped hole (5-1) on mission case (5) and stretches in mission case (5), it is characterized in that: the bottom surface of the nuts (1-1) of described bolt body (1) is provided with at least one annular projection (1-4) protruded downwards, the hardness of described bolt body (1) is greater than the hardness of mission case (5), the annular projection (1-4) of the downward protrusion of the bottom surface of the nuts (1-1) of described bolt body (1) and the upper surface of mission case (5) seal fits.
2. the Anti-loosen sealing bolt structure on speed changer according to claim 1, is characterized in that: the bottom surface of the nuts (1-1) of described bolt body (1) is provided with two or three annular projections (1-4) protruded downwards.
3. the Anti-loosen sealing bolt structure on speed changer according to claim 1, is characterized in that: the cross section of described annular projection (1-4) is semicircle or half elliptic or parabola shaped.
4. the Anti-loosen sealing bolt structure on speed changer according to any one of claim 1 to 3, is characterized in that: described bolt body (1) entirety is made up of carbon steel or stainless steel, and described mission case 5 entirety is made up of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894087.1U CN205190485U (en) | 2015-11-11 | 2015-11-11 | A locking sealing bolt structure for on derailleur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894087.1U CN205190485U (en) | 2015-11-11 | 2015-11-11 | A locking sealing bolt structure for on derailleur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205190485U true CN205190485U (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520894087.1U Active CN205190485U (en) | 2015-11-11 | 2015-11-11 | A locking sealing bolt structure for on derailleur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205190485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201987A (en) * | 2015-11-11 | 2015-12-30 | 重庆青山工业有限责任公司 | Loosing-preventing sealing bolt structure for speed changer |
-
2015
- 2015-11-11 CN CN201520894087.1U patent/CN205190485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201987A (en) * | 2015-11-11 | 2015-12-30 | 重庆青山工业有限责任公司 | Loosing-preventing sealing bolt structure for speed changer |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |