CN111022468A - Novel threaded bushing for diesel engine and mounting method thereof - Google Patents
Novel threaded bushing for diesel engine and mounting method thereof Download PDFInfo
- Publication number
- CN111022468A CN111022468A CN201911152749.7A CN201911152749A CN111022468A CN 111022468 A CN111022468 A CN 111022468A CN 201911152749 A CN201911152749 A CN 201911152749A CN 111022468 A CN111022468 A CN 111022468A
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- Prior art keywords
- tooth
- threaded bushing
- ring groove
- sealing ring
- oil pan
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- 238000000034 method Methods 0.000 title claims description 14
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 238000001125 extrusion Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 9
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims 3
- 238000005755 formation reaction Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 22
- 239000003921 oil Substances 0.000 description 50
- 238000005457 optimization Methods 0.000 description 9
- 239000003292 glue Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/004—Sealing; Insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0028—Tools for removing or installing seals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/143—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same for installing wire thread inserts or tubular threaded inserts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a novel threaded bushing for a diesel engine, which comprises a cylindrical body with a hollow structure and a flange part, wherein the flange part is arranged on the periphery of one end of the body; the anti-loosening tooth is arranged on the periphery of the body and located between the first sealing ring groove and the flange portion, and the anti-loosening tooth, the first sealing ring groove and the external thread structure are sequentially arranged on the periphery of the body. Through above-mentioned scheme, through carrying out first sealing washer groove setting on the cylinder of body, in the time taking place not hard up at the threaded bush, the sealed effect of sealing washer can not lose, forms stable effectual sealed effect, makes the threaded bush take place to warp through outside effort, makes in stopping tooth embedding oil pan, forms the fixed effect to the threaded bush.
Description
Technical Field
The invention relates to the field of parts for diesel engines, in particular to a novel threaded bushing with a sealing function for an oil pan of a diesel engine and an installation method thereof.
Background
The oil pan is the shell class part of engine storage machine oil, changes machine oil for diesel engine maintenance time, can arrange one or a plurality of oil drain plug on the oil pan. The oil pan majority is the aluminum alloy casting, because of need dismouting repeatedly, can pack into steel screw thread bush between oil pan screw hole and oil drain plug, scribbles the thread sealant when packing into the screw thread bush, prevents not hard up and seepage.
In the actual production, due to the existence of uncertain factors such as storage conditions of thread sealing glue, environment conditions of applying the sealing glue, cleanliness of parts, solidification time of the sealing glue and the like, the reliability of installation of the thread bushing of the oil pan is influenced to different degrees, and the situation that oil is loosened and leaked when a user changes engine oil is frequent.
And meanwhile, a sealing ring is arranged between the flange part of some thread bushings and the oil pan for sealing, but the sealing effect is still poor after the thread bushings are loosened, and the leakage condition still occurs.
In view of the above, a new threaded bushing that effectively solves the problems of loosening and leakage is proposed to solve the above problems.
Disclosure of Invention
The invention aims to provide a novel threaded bushing for a diesel engine and an installation method thereof.
The technology adopted by the invention is as follows:
a novel threaded bushing for a diesel engine comprises a cylindrical body with a hollow structure and a flange part, wherein the flange part is arranged on the periphery of one end of the body, the body is provided with an internal thread structure and an external thread structure, and the novel threaded bushing also comprises a first sealing ring groove, the first sealing ring groove is arranged on the outer cylindrical surface of the body, and the first sealing ring groove is arranged at one end close to the flange part; the anti-loosening tooth is arranged on the periphery of the body and located between the first sealing ring groove and the flange portion, and the anti-loosening tooth, the first sealing ring groove and the external thread structure are sequentially arranged on the periphery of the body.
Through above-mentioned scheme, through carrying out first sealing washer groove setting on the cylinder of body, in the time taking place not hard up at the threaded bush, the sealed effect of sealing washer can not lose, forms stable effectual sealed effect, makes the threaded bush take place to warp through outside effort, makes in stopping tooth embedding oil pan, forms the fixed effect to the threaded bush.
And as a further optimization of the scheme, when the stopping teeth are machined and are not installed for use, the maximum outer diameter of the stopping teeth is smaller than or equal to the maximum outer diameter of the external thread structure. The stopping teeth are embedded into the oil pan through extrusion deformation, and installation of an external thread structure cannot be influenced when the thread bushing is preliminarily installed.
As further optimization of the scheme, the backstop teeth comprise a plurality of tooth-shaped structures, the tooth-shaped structures are distributed on the periphery of the body, and the tooth crest angle of each tooth-shaped structure is 60-90 degrees. Adopt non-obtuse dentate structure, can imbed the oil pan fast, the reasonable control of angle can guarantee that dentate structure is difficult to damage.
As further optimization of the scheme, an arc transition structure is arranged between every two tooth-shaped structures, and the circle center of the arc transition structure is positioned outside the body. The difficulty of circular arc transition structure to stopping tooth processing reduces, and in extrusion deformation, provides the deformation size simultaneously, guarantees that the fracture problem can not appear.
As further optimization of the scheme, the novel threaded bushing for the diesel engine is made of low-carbon steel materials. The hardness of the low-carbon steel material is greater than that of the oil pan, and the oil pan can deform to a certain extent and is not easy to crack through external force.
According to the further optimization of the scheme, the flange part is further provided with a second sealing ring groove, and the second sealing ring groove faces the other end of the body. The second sealing ring groove can realize the secondary sealing effect by installing the sealing ring.
A mounting method of a novel threaded bushing applied to a diesel engine comprises the following steps of initial mounting: sleeving a sealing ring on a first sealing ring groove, and installing a threaded bushing into an oil drain hole of an oil pan by using an external thread structure until a flange part abuts against the oil pan; locking the retaining teeth: the extrusion tool is arranged in the hollow part of the threaded bushing to extrude the inner ring of the retaining tooth until the retaining tooth is extruded and deformed, and the retaining tooth is embedded into the oil pan.
Compared with the prior art, the invention has the beneficial effects that:
through the first seal ring groove structure of cylinder design, can guarantee that the screw thread bush takes place in time not hard up, sealed effect still plays a role.
The oil pan is embedded through extrusion deformation of the stopping teeth, and a high-strength fixing mode with the oil pan is formed.
Two sealing ring grooves are designed, so that two-stage sealing of the contact surface of the oil pan is realized.
Drawings
FIG. 1 is a schematic view of a prior art threaded bushing in use;
FIG. 2 is a schematic structural view of a novel threaded bushing for a diesel engine according to the present invention;
FIG. 3 is a schematic view of the novel threaded bushing for a diesel engine according to the present invention;
FIG. 4 is a bottom view of the novel threaded bushing for a diesel engine according to the present invention;
FIG. 5 is a partial enlarged view of area A in FIG. 4;
FIG. 6 is a schematic structural view of a preferred structure of the novel threaded bushing for a diesel engine provided by the invention;
FIG. 7 is a schematic view of the initial installation of the novel threaded bushing for a diesel engine according to the present invention;
FIG. 8 is a schematic view of the locking of the retaining teeth of the installation method of the novel threaded bushing for the diesel engine according to the present invention;
fig. 9 is a second schematic view of the locking of the retaining teeth of the installation method of the novel threaded bushing for the diesel engine according to the invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1:
referring to the attached drawings 1-9, the novel threaded bushing for the diesel engine comprises a cylindrical body 1 with a hollow structure and a flange part 2, wherein the flange part 2 is arranged on the periphery of one end of the body 1, the body 1 is provided with an internal thread structure 3 and an external thread structure 4, the novel threaded bushing further comprises a first seal ring groove 5, the first seal ring groove 5 is arranged on the outer cylindrical surface of the body 1, and the first seal ring groove 5 is arranged at one end close to the flange part 2; still include stopping tooth 6, stopping tooth 6 locates the body 1 periphery, and stopping tooth 6 is located between first seal ring groove 5 and the edge of a wing portion 2, and stopping tooth 6, first seal ring groove 5 and outside helicitic texture 4 locate the periphery of body 1 in proper order.
Traditional screw thread bush seals through sealed glue or sealing washer 8 between 7 with the oil pan, but at engine motion and vehicle driving process, the vibration is to making the screw thread bush take place not hard up, no matter sealed glue or sealing washer 8, its sealed effect all can realize, takes place the seepage problem. The traditional sealing ring 8 is arranged on the contact surface of the flange part 2 and the oil pan 7, as shown in fig. 1, the sealing ring 8 is fixed by arranging a sealing ring groove, and the sealing structure has the following problems in practical use that firstly, when the threaded bushing is loosened, the flange part 2 extrudes the sealing ring 8 to be weakened, and the sealing effect of the sealing ring 8 is poor or even fails; secondly, the sealing ring 8 has the possibility of exposing the air, the sealing ring 8 is easy to age, and the service life of the sealing effect is short.
In this embodiment, through design first seal ring groove 5 on the cylinder, can effectively improve the problem that above-mentioned traditional structure brought, seal ring 8 of cylinder installation, can not just appear the problem of inefficacy owing to the earlier stage of screw bush is not hard up, seal ring 8's extrusion derives from the oil drain hole cylinder and the screw bush of oil pan 7 and extrudees, as long as not the screw bush is toward outer rotatory, leads to seal ring 8 and oil pan 7 to lose the condition of contact and extrusion, seal ring 8's sealed effect just can not lose or weaken. Meanwhile, the sealing ring 8 can be isolated from air, and the service life is greatly prolonged.
Meanwhile, the fundamental problem of the above problem is that the threaded bushing moves relative to the oil pan 7 due to vibration, and in the present embodiment, the high-strength fixation of the threaded bushing and the oil pan 7 is realized by providing the retaining teeth 6, so that the above problem is solved fundamentally.
As a further optimization of the scheme, when the stopping teeth 6 are machined and are not installed for use, the maximum outer diameter of the stopping teeth 6 is smaller than or equal to the maximum outer diameter of the external thread structure 4. The stopping teeth 6 are embedded into the oil pan 7 through extrusion deformation, and the installation of the external thread structure 4 cannot be influenced when the thread bushing is preliminarily installed. The oil drain hole of oil pan 7 is mostly pure screw hole, also is the most basic oil drain hole structure, in order to realize above-mentioned function, specifically for install through outside helicitic texture 4, offsets with oil pan 7 up to flange portion 2, and the preliminary fixed with oil pan 7 has been accomplished to the screw thread bush this moment, installs sealing washer 8 in first sealing washer groove 5 at present before. Stopping tooth 6 accessible stretches into the oil drain hole in, carries out extrusion deformation through outside extrusion tool 10, makes stopping tooth 6 once only imbed in oil pan 7, realizes that the high strength between the two is fixed, and the influence that the vibration brought is just solved.
Through above-mentioned scheme, through carrying out the setting of first sealing washer groove 5 on the cylinder of body 1, in the time taking place not hard up at the threaded bush, the sealed effect of sealing washer 8 can not lose, forms stable effectual sealed effect, makes the threaded bush take place to warp through external acting force, makes stopping tooth 6 imbed oil pan 7 in, forms the fixed effect to the threaded bush.
Example 2:
referring to fig. 1 to 9, in the present embodiment, by optimally designing the structure of the retaining tooth 6, it is ensured that the use effect is better when the extrusion deformation occurs.
In the embodiment, the retaining tooth 6 comprises a plurality of tooth structures 61, the plurality of tooth structures 61 are distributed on the periphery of the body 1, and the tooth crest angle of the tooth structures 61 is 60-90 degrees. Adopt non-obtuse dentate structure 61, can imbed oil pan 7 fast, the reasonable control of angle can guarantee that dentate structure 61 is difficult to damage. The tooth top angle is too big, is difficult to imbed in oil pan 7, and the tooth top angle undersize, the processing degree of difficulty is big, extrudees the in-process easily impaired, in this embodiment, has adopted 80 tooth top angles, and its result of use is the most preferred.
As a further optimization of the scheme, an arc transition structure 62 is arranged between every two tooth-shaped structures 61, and the center of the arc transition structure 62 is located outside the body 1. The difficulty of processing of the retaining tooth 6 is reduced by the arc transition structure 62, and meanwhile, deformation allowance is provided when extrusion deformation is carried out, so that the problem of cracking is avoided. The arc transition structure 62 can provide deformation allowance, and simultaneously release stress in a deformation area, so that the problem of cracking is avoided. Simultaneously, a space for feeding and retracting is provided for processing, and the processing difficulty is simplified.
As further optimization of the scheme, the novel threaded bushing for the diesel engine is made of low-carbon steel materials. The hardness of the low-carbon steel material is greater than that of the oil pan 7, and certain deformation can be achieved through external force and cracking is not easy to occur. The oil pan 7 is generally made of aluminum alloy, and low-carbon steel can meet the actual use requirements in terms of hardness and plasticity.
As a further optimization of the scheme, the flange part 2 is further provided with a second seal ring groove 9, and the second seal ring groove 9 faces the other end of the body 1. The second seal ring groove 9 can realize a secondary sealing effect by installing the seal ring 8. The structure of second seal groove is the sealed type commonly used, but has combined the locking effect of moving of stopping tooth 6, can realize more effective sealed effect, can not appear the not hard up problem that vibration brought among the traditional art.
Example 3:
in this embodiment, a method for installing a novel threaded bushing applied to a diesel engine is provided, and a reasonable installation method is adopted to realize effective use of the novel threaded bushing.
Referring to fig. 7-9, a method for installing a novel threaded bushing for a diesel engine includes the following steps: sleeving a sealing ring 8 on a first sealing ring groove 5, and installing a threaded bush into an oil drain hole of an oil pan 7 by using an external thread structure 4 until a flange part 2 abuts against the oil pan 7; locking the retaining teeth 6: the extrusion tool 10 is arranged in the hollow interior of the threaded bushing to extrude the inner ring of the stopping teeth 6 until the stopping teeth 6 are extruded and deformed, and the tooth-shaped structure 61 is embedded in the oil pan 7.
Because first sealing washer groove 5 can cooperate oil pan 7 to realize sealing washer 8 completely sealed, stopping tooth 6 realizes that high strength is fixed, theoretically the powerful striking of outside does not appear, this novel threaded bush can effectively install on oil pan 7 for a long time, and life is still long than the conventional life of engine even, consequently fixes through the mode of stopping tooth 6 embedding oil pan 7, though for disposable fixed, can long-term the use in theory. Even if the function of the retaining tooth 6 is discounted or lost when the threaded bushing is replaced later, the first seal ring groove 5 structure with the cylindrical surface design has better use effect than the traditional threaded bushing structure.
Therefore, even if only the first step of preliminary installation is carried out, the using effect of the prior art can be obtained, and the method is an effective measure for recycling; the locking of the retaining teeth 6 is a disposable measure, but the service life is very long.
The key point of realizing the locking function of the retaining teeth 6 is based on the selection of materials, the hardness of the material is higher than that of the oil sump 7, the material can be extruded and deformed, the material is manufactured by using the same common hardware material, and the low-carbon steel can meet the actual use requirement in practical experiments.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The novel threaded bushing for the diesel engine comprises a cylindrical body (1) with a hollow structure and a flange part (2), wherein the flange part (2) is arranged on the periphery of one end of the body (1), the body (1) is provided with an internal thread structure (3) and an external thread structure (4), and the novel threaded bushing is characterized by further comprising a first sealing ring groove (5), the first sealing ring groove (5) is arranged on the outer cylindrical surface of the body (1), and the first sealing ring groove (5) is arranged at one end close to the flange part (2); still include stopping tooth (6), stopping tooth (6) are located body (1) periphery, stopping tooth (6) are located first seal ring groove (5) with between flange portion (2), stopping tooth (6), first seal ring groove (5) and outside helicitic texture (4) are located in proper order the periphery of body (1).
2. The novel threaded bushing for diesel engines as claimed in claim 1, characterized in that the maximum external diameter of the retaining tooth (6) is less than or equal to the maximum external diameter of the external thread structure (4) when the retaining tooth (6) is finished and not installed for use.
3. A new threaded bushing for diesel engines, according to claim 2, characterized in that said retaining tooth (6) comprises a plurality of tooth-like formations (61), a plurality of said tooth-like formations (61) being circumferentially distributed around said body (1), said tooth-like formations (61) having a tip angle of 60 ° to 90 °.
4. A novel threaded bushing for diesel engines according to claim 3, characterized in that between every two of said tooth-like structures (61) there is a circular arc transition structure (62), the centre of said circular arc transition structure (62) being located outside said body (1).
5. The novel threaded bushing for diesel engines as claimed in claim 4, wherein the novel threaded bushing for diesel engines is made of a low carbon steel material.
6. A new threaded bushing for diesel engines according to any of claims 1 to 5, characterized in that said flange portion (2) is further provided with a second seal ring groove (9), said second seal ring groove (9) facing the other end of said body (1).
7. A method for installing a new threaded bushing for diesel engines according to any of claims 1 to 5, characterized in that it comprises a preliminary installation: sleeving a sealing ring (8) on a first sealing ring groove (5), and installing a threaded bushing into an oil drain hole of an oil pan (7) by using an external thread structure (4) until a flange part (2) abuts against the oil pan (7);
locking the retaining teeth: the extrusion tool (10) is arranged in the hollow interior of the threaded bushing to extrude the inner ring of the stopping tooth (6) until the stopping tooth (6) is extruded and deformed, and the stopping tooth (6) is embedded into the oil pan (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152749.7A CN111022468A (en) | 2019-11-22 | 2019-11-22 | Novel threaded bushing for diesel engine and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152749.7A CN111022468A (en) | 2019-11-22 | 2019-11-22 | Novel threaded bushing for diesel engine and mounting method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111022468A true CN111022468A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911152749.7A Pending CN111022468A (en) | 2019-11-22 | 2019-11-22 | Novel threaded bushing for diesel engine and mounting method thereof |
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| CN (1) | CN111022468A (en) |
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| CN204300386U (en) * | 2014-10-28 | 2015-04-29 | 中航通飞研究院有限公司 | Water takeoff and landing aircraft watertight compartment drain valve |
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| US20190145455A1 (en) * | 2017-11-10 | 2019-05-16 | Soft Robotics, Inc. | Fasteners with reduced bacterial harborage points, sealing capabilities, and component protection features |
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Application publication date: 20200417 |