CN105201987A - Loosing-preventing sealing bolt structure for speed changer - Google Patents
Loosing-preventing sealing bolt structure for speed changer Download PDFInfo
- Publication number
- CN105201987A CN105201987A CN201510764926.2A CN201510764926A CN105201987A CN 105201987 A CN105201987 A CN 105201987A CN 201510764926 A CN201510764926 A CN 201510764926A CN 105201987 A CN105201987 A CN 105201987A
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- China
- Prior art keywords
- bolt
- mission case
- speed changer
- bolt body
- nuts
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Abstract
The invention discloses a loosing-preventing sealing bolt structure with a relatively good sealing effect for a speed changer. A bolt body (1) comprises a bolt cap (1-1) and a bolt rod (1-2), wherein the diameter of the bolt rod (1-2) is less than that of the bolt cap (1-1); the bolt rod (1-2) downwards extends from the bottom of the bolt cap (1-1); threads (1-3) are distributed on the periphery of the bolt rod; thread holes (5-1) are formed in a speed changer box body (5); the threads on the bolt rod of the bolt body are hermetically connected with the thread holes in the speed changer box body and extend to the speed changer box body; the bottom surface of the bolt cap of the bolt body is provided with at least one annular bulge (1-4) protruded downwards; the hardness of the bolt body is greater than that of the speed changer box body; each annular bulge protruded downwards and at the bottom surface of the bolt cap of the bolt body is in sealing fit with the upper surface of the speed changer box.
Description
Technical field
The present invention relates to speed changer sealing configuration, be 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.
Summary of the invention
The technical problem to be solved in the present invention 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 present invention 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 present invention comprises following beneficial effect;
Bottom surface due to the nuts of bolt body of the present invention 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 present invention 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 present invention 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 invention;
Fig. 3 is the structural representation of bolt body of the present invention;
Fig. 4 is the enlarged diagram at the I place of Fig. 2.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail;
See Fig. 2, Fig. 3 and Fig. 4, Anti-loosen sealing bolt structure on speed changer of the present invention, 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 of the present invention 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 invention 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 present invention 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 invention from loosening preferably and loosen with non-rotating type.In addition, the present invention 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 invention 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 present invention 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 invention 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 |
|---|---|---|---|
| CN201510764926.2A CN105201987A (en) | 2015-11-11 | 2015-11-11 | Loosing-preventing sealing bolt structure for speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510764926.2A CN105201987A (en) | 2015-11-11 | 2015-11-11 | Loosing-preventing sealing bolt structure for speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201987A true CN105201987A (en) | 2015-12-30 |
Family
ID=54949864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510764926.2A Pending CN105201987A (en) | 2015-11-11 | 2015-11-11 | Loosing-preventing sealing bolt structure for speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201987A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19620794A1 (en) * | 1996-05-23 | 1997-11-27 | Man Nutzfahrzeuge Ag | Bolt seal for esp. cylinder head bolts |
| US5743691A (en) * | 1997-02-03 | 1998-04-28 | Textron Inc. | Clinch-type fastener member |
| WO2008066031A1 (en) * | 2006-11-29 | 2008-06-05 | Meira Corporation | Nut |
| CN203257849U (en) * | 2013-03-29 | 2013-10-30 | 吴德才 | Bolt additionally provided with ring |
| CN103597222A (en) * | 2011-04-05 | 2014-02-19 | 岩田螺丝株式会社 | Earth bolt |
| CN203948427U (en) * | 2014-06-19 | 2014-11-19 | 日泰（上海）汽车标准件有限公司 | A kind of Anti-loosen sealing bolt of many grooves |
| CN205190485U (en) * | 2015-11-11 | 2016-04-27 | 重庆青山工业有限责任公司 | A locking sealing bolt structure for on derailleur |
-
2015
- 2015-11-11 CN CN201510764926.2A patent/CN105201987A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19620794A1 (en) * | 1996-05-23 | 1997-11-27 | Man Nutzfahrzeuge Ag | Bolt seal for esp. cylinder head bolts |
| US5743691A (en) * | 1997-02-03 | 1998-04-28 | Textron Inc. | Clinch-type fastener member |
| WO2008066031A1 (en) * | 2006-11-29 | 2008-06-05 | Meira Corporation | Nut |
| CN103597222A (en) * | 2011-04-05 | 2014-02-19 | 岩田螺丝株式会社 | Earth bolt |
| CN203257849U (en) * | 2013-03-29 | 2013-10-30 | 吴德才 | Bolt additionally provided with ring |
| CN203948427U (en) * | 2014-06-19 | 2014-11-19 | 日泰（上海）汽车标准件有限公司 | A kind of Anti-loosen sealing bolt of many grooves |
| CN205190485U (en) * | 2015-11-11 | 2016-04-27 | 重庆青山工业有限责任公司 | A locking sealing bolt structure for on derailleur |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
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| RJ01 | Rejection of invention patent application after publication |