CN218235291U - Sealing structure and engine - Google Patents
Sealing structure and engine Download PDFInfo
- Publication number
- CN218235291U CN218235291U CN202221706274.9U CN202221706274U CN218235291U CN 218235291 U CN218235291 U CN 218235291U CN 202221706274 U CN202221706274 U CN 202221706274U CN 218235291 U CN218235291 U CN 218235291U
- Authority
- CN
- China
- Prior art keywords
- section
- hole
- hole section
- sealing
- linkage segment
- 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.)
- Active
Links
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model provides a sealing structure and an engine, the sealing structure comprises a sealing hole and a plug screw, the sealing hole comprises a first hole section and a second hole section, the first hole section is arranged close to the opening of the sealing hole compared with the second hole section, the first hole section is cylindrical and is provided with an internal thread, the second hole section is conical, and the large-diameter end of the second hole section is connected with the first hole section; the plug screw is equipped with the external screw thread including the first linkage segment and the second linkage segment that connect gradually on the first linkage segment, and the external screw thread matches with the internal thread, first linkage segment and first hole section spiro union, the appearance looks adaptation of second linkage segment and second hole section, and the second linkage segment inlays to be established in the second hole section. The conical surface hole of sealed hole and the conical surface formation face contact of plug screw are sealed, and the cylindrical internal thread hole of sealed hole reaches the reliable purpose of connection through screwing up with the external screw thread fit of plug screw, and this seal structure sealing reliability is high, makes simply and the quality can guarantee to when sealing medium pressure is higher, the plug screw is difficult for deviating from.
Description
Technical Field
The utility model relates to an engine technology field especially relates to a seal structure, the utility model discloses still relate to an engine.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
Common hole sealing is performed by adopting a bowl-shaped plug or a conical thread plug, and the bowl-shaped plug or the conical thread plug have certain defects, so that the sealing reliability cannot be guaranteed, wherein the bowl-shaped plug is easy to leak when the assembly is poor, and the bowl-shaped plug is easy to separate when the pressure of a sealing medium is high; the requirement of the conical thread plug sealing on the thread form of the screw plug and the internal thread is very high, and the leakage problem caused by poor thread form manufacturing often occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of poor sealing reliability of the existing hole sealing structure at least. The purpose is realized by the following technical scheme:
the utility model discloses a first aspect provides a seal structure, seal structure includes:
the sealing hole comprises a first hole section and a second hole section, the first hole section is arranged close to the opening of the sealing hole compared with the second hole section, the first hole section is cylindrical and provided with internal threads, the second hole section is conical, and the large-diameter end of the second hole section is connected with the first hole section;
the plug screw, the plug screw is including the first linkage segment and the second linkage segment that connect gradually, be equipped with the external screw thread on the first linkage segment, the external screw thread with the internal thread matches, the first linkage segment with first hole section spiro union, the second linkage segment with the appearance looks adaptation of second hole section, just the second linkage segment is pegged graft in the second hole section.
The utility model discloses the seal structure that the first aspect provided comprises plug screw and sealed hole, wherein the front portion of plug screw is conical surface structure, the rear portion of plug screw is cylinder external screw thread structure, and there is the conical surface hole in the sealed hole, the conical surface hole forms line contact with the conical surface of plug screw and seals (the plug screw up the back, form annular surface contact), there is cylinder internal thread hole on the upper portion of sealed hole, with the external screw-thread fit of plug screw, reach the reliable purpose of connection through screwing up, this seal structure seals the reliability height, it can guarantee to make simply and the quality, and through threaded connection structure, guarantee that plug screw and sealed hole's connection is reliable, when sealing medium pressure is higher, the plug screw is difficult for deviating from.
In addition, according to the utility model discloses a seal structure still can have following additional technical characterstic:
in some embodiments of the present invention, the angle of the vertex angle of the cone that the conical surface of the second hole section can form is greater than the angle of the vertex angle of the cone that the conical surface of the second connection section can form.
In some embodiments of the present invention, the second connecting portion is in interference connection with the second hole section.
In some embodiments of the present invention, the screw plug further includes a tightening portion, the tightening portion is disposed at an end of the first connecting section away from the second connecting section, and the tightening portion is used for connecting a wrench.
In some embodiments of the present invention, the tightening portion includes a groove provided on the first connection section.
In some embodiments of the present invention, the groove has a regular polygon structure along a radial cross section of the plug screw.
In some embodiments of the present invention, the axial length of the first connection section is greater than the axial length of the first bore section.
In some embodiments of the present invention, the small diameter end of the second connecting section is provided with a fillet or a chamfer.
In some embodiments of the present invention, the sealing hole further includes a third hole section, the third hole section is connected to the small diameter end of the second hole section, and the end of the second connection section is located in the third hole section.
The second aspect of the present invention provides an engine, wherein the engine comprises the sealing structure provided by the first aspect of the present invention.
The utility model discloses the engine that the second aspect provided have with the utility model discloses a beneficial effect that seal structure that the first aspect provided is the same is no longer repeated here.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated with like reference numerals throughout the drawings.
In the drawings:
figure 1 schematically shows a cross-sectional structural view of a sealing structure according to an embodiment of the invention;
fig. 2 schematically shows a cross-sectional structural view of a plug screw according to an embodiment of the present invention;
fig. 3 schematically shows a cross-sectional structural view of a sealing bore according to an embodiment of the present invention;
the reference numbers are as follows:
10: sealing hole, 11: first bore section, 12: a second bore section;
20: screw plug, 21: first connection section, 22: second connection section, 23: and (6) a groove.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. This spatially relative term is intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "in 8230 \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 3, a first aspect of the present invention provides a sealing structure, the sealing structure includes a sealing hole 10 and a plug screw 20, the sealing hole 10 includes a first hole section 11 and a second hole section 12, the first hole section 11 is disposed closer to an opening of the sealing hole 10 than the second hole section 12, the first hole section 11 is cylindrical and provided with an internal thread, the second hole section 12 is conical, and a large diameter end of the second hole section 12 is connected to the first hole section 11; plug screw 20, plug screw 20 is equipped with the external screw thread including the first linkage segment 11 and the second linkage segment 12 that connect gradually on the first linkage segment 11, and the external screw thread matches with the internal thread, first linkage segment 11 and first hole section 11 spiro union, the appearance of second linkage segment 12 and the appearance looks adaptation of second hole section 12, and second linkage segment 12 inserts and establish in second hole section 12.
It will be appreciated that the first bore section 11 of the seal bore 10 is cylindrical and internally threaded, the second bore section 12 is conical with the larger diameter end thereof being connected to the first bore section 11, and the first and second bore sections 11, 12 are coaxially disposed. The first connecting section 11 of the screw plug 20 is used for being screwed with the first hole section 11, and the second connecting section 12 is used for matching with the hole wall of the second hole section 12 to form surface contact sealing. During the assembly, twist sealed hole 10 with plug screw 20, screw up the outer peripheral face of back second linkage segment 12 and the pore wall of second pore segment 12 and form the face contact, first linkage segment 11 forms the spiro union with first pore segment 11, reaches dual seal's effect, compares current bowl shape stopper simple to operate and is difficult for the assembly bad, compares current conical thread, and plug screw 20's machining precision requires lowly, and the cost is lower, and is sealed effectual.
The utility model discloses the seal structure that the first aspect provided comprises plug screw 20 and sealed hole 10, wherein the front portion of plug screw 20 is conical surface structure, the rear portion of plug screw 20 is cylinder external screw thread structure, and there is the conical surface hole in the sealed hole 10, conical surface hole forms line contact with the conical surface of plug screw 20 and seals (the plug screw 20 screws up the back, form annular face contact), there is cylinder internal thread hole on the upper portion of sealed hole 10, with the external screw-thread fit of plug screw 20, reach the reliable purpose of connection through screwing up, this seal structure seals up high reliability, make simply and the quality can guarantee, and through threaded connection structure, guarantee that plug screw 20 is reliable with being connected of sealed hole 10, when sealing medium pressure is higher, plug screw 20 is difficult for deviating from.
In some embodiments of the present invention, the angle of the apex angle of the cone that can be formed by the conical surface of the second hole section 12 (angle B in fig. 3) is greater than the angle of the apex angle of the cone that can be formed by the conical surface of the second connection section 12 (angle a in fig. 2). For example, the angle of the vertex angle of the cone that the conical surface of the second hole section 12 can form is 60 °, the angle of the vertex angle of the cone that the conical surface of the second connecting section 12 can form is 58 °, and the specific angle can be set according to actual needs, and it is sufficient that the second connecting section 12 and the second hole section 12 can be in interference fit. Thus, when the screw plug 20 is screwed into the sealing hole 10, the peripheral surface of the second connecting section 12 will gradually abut against the hole wall of the second hole section 12, and the distance between the two parts will gradually approach until the two surfaces are tightly jointed, so that the sealing effect at the position can be enhanced.
In some embodiments of the present invention, the second connecting portion is connected to the second hole section 12 in an interference manner, and the second connecting portion can be tightly abutted on the second hole section 12 by the conical surface angle and diameter of the second connecting portion, so as to improve the sealing effect of the second connecting portion.
In some embodiments of the present invention, the screw plug 20 further includes a tightening portion, the tightening portion is disposed at one end of the first connection section 11 away from the second connection section 12, and the tightening portion is used for connecting a wrench. One end of the screw plug 20 protruding out of the sealing hole 10 is provided with a tightening part, so that the screw plug 20 can be conveniently screwed into the sealing hole 10, and the tightening part can be arranged into a boss or a groove 13 according to actual needs to be connected with a tightened handle.
In some embodiments of the present invention, the tightening portion includes a groove 13 provided on the first connection section 11. Through setting up recess 13, make things convenient for plug screw 20 to connect the spanner, the shape of recess 13 can be according to actual need and spanner adaptation design.
In some embodiments of the present invention, the cross section of the groove 13 along the radial direction of the plug screw 20 is a regular hexagon. An allen wrench may be used to insert the recess 13 to screw the plug screw 20 into the sealing hole 10.
In some embodiments of the present invention, the axial length of the first connection section 11 is greater than the axial length of the first bore section 11. So that the plug screw 20 can be screwed into the second hole section 12 for a long distance to connect the second connection section 12 with the second hole section 12 in an interference manner, thereby enhancing the sealing effect. Moreover, the pretightening force of the screw plug 20 can be conveniently adjusted, and the adaptability is better.
In some embodiments of the present invention, the small diameter end of the second connecting section 12 is provided with a fillet or a chamfer. The screw plug 20 is not easy to scratch the hole wall of the sealing hole 10 when being screwed in by arranging the round angle or the chamfer.
In some embodiments of the present invention, the seal bore 10 further comprises a third bore section, the third bore section is connected to the small diameter end of the second bore section 12, and the end of the second connecting section 12 is located in the third bore section. The screw plug 20 can extend into the third hole section after being screwed down, and the contact area of the screw plug and the side end of the second hole section 12 is maximized as much as possible, so that the sealing area is enlarged, and the sealing effect is enhanced
The utility model discloses an in some embodiments, the plug screw is the integrated into one piece structure, and plug screw 20 self seamless intensity is higher, and the sealed effect is better for the leak point is few.
The second aspect of the utility model provides an engine, the engine includes the utility model discloses seal structure that the first aspect provided.
The utility model discloses the engine that the second aspect provided have with the utility model discloses a beneficial effect that seal structure that the first aspect provided is the same is no longer repeated here.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A seal structure, characterized in that the seal structure comprises:
the sealing hole comprises a first hole section and a second hole section, the first hole section is arranged close to the opening of the sealing hole compared with the second hole section, the first hole section is cylindrical and provided with internal threads, the second hole section is conical, and the large-diameter end of the second hole section is connected with the first hole section;
the plug screw, the plug screw is including the first linkage segment and the second linkage segment that connect gradually, be equipped with the external screw thread on the first linkage segment, the external screw thread with the internal thread matches, the first linkage segment with first hole section spiro union, the second linkage segment with the appearance looks adaptation of second hole section, the second linkage segment peg graft in the second hole section.
2. The sealing structure of claim 1, wherein the angle of the apex angle of the cone that the tapered surface of the second bore section can form is greater than the angle of the apex angle of the cone that the tapered surface of the second connecting section can form.
3. The seal structure of claim 1, wherein the second connector segment is in interference connection with the second bore segment.
4. The seal structure of claim 1, wherein the plug screw further includes a tightening portion provided at an end of the first connection section remote from the second connection section, the tightening portion being adapted to be connected to a wrench.
5. The seal structure of claim 4, wherein the tightening portion includes a groove provided on the first connection section.
6. The seal structure of claim 5, wherein a cross section of the groove in a radial direction of the plug screw includes a polygonal structure.
7. The seal structure of claim 1, wherein an axial length of the first connector segment is greater than an axial length of the first bore segment.
8. The seal structure of claim 1, wherein the small-diameter end of the second connecting section is provided with a fillet or a chamfer.
9. The seal structure of any one of claims 1 to 8, wherein the seal bore further comprises a third bore section connected to the small diameter end of the second bore section, the end of the second connecting section being located in the third bore section.
10. An engine characterized in that the engine comprises a seal structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221706274.9U CN218235291U (en) | 2022-07-04 | 2022-07-04 | Sealing structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221706274.9U CN218235291U (en) | 2022-07-04 | 2022-07-04 | Sealing structure and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218235291U true CN218235291U (en) | 2023-01-06 |
Family
ID=84674776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221706274.9U Active CN218235291U (en) | 2022-07-04 | 2022-07-04 | Sealing structure and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218235291U (en) |
-
2022
- 2022-07-04 CN CN202221706274.9U patent/CN218235291U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7195283B2 (en) | Self-centering tubular connection | |
| US6598908B1 (en) | Hydraulic fitting | |
| US7568736B2 (en) | Joint structure of branch connector for common rail | |
| CN102224363B (en) | Compression sensor gasket and method of construction | |
| US4204559A (en) | Line tap valve | |
| CN218235291U (en) | Sealing structure and engine | |
| US7004145B2 (en) | Fuel distribution pipe for motor vehicle injection devices, in particular for common rail systems | |
| US4481930A (en) | Fuel inlet repair device | |
| US5443580A (en) | Compact fitting | |
| CN207334016U (en) | A kind of LNG heavy trucks gas kitchen pipe joint | |
| JPH10221192A (en) | Structure of metal seal for high-pressure liquid circuit | |
| CN211202400U (en) | Anti-loose sealing device for impeller nut | |
| US20120085321A1 (en) | Fuel distribution pipe for a motor vehicle and method for arranging a fuel distribution pipe | |
| CN218378260U (en) | Sealing joint and sealing structure | |
| JP4709403B2 (en) | Bolt joint seal structure | |
| CN106460753A (en) | Fuel feed system to a fuel injector, and fuel injector | |
| CN219866730U (en) | Hard sealing structure for steering gear | |
| CN215172165U (en) | Piston and piston rod matching structure | |
| JPH0154552B2 (en) | ||
| CN213743541U (en) | Sealing plug, sealing plug assembly and turbocharger integrated with cooling water jacket | |
| CN211699740U (en) | Logging source | |
| CN103397965A (en) | Engine oil atomizer installation structure | |
| CN209622251U (en) | Valve or pipe fitting joint structure | |
| CN211331674U (en) | Special screw tap for explosive screw sleeve | |
| JPH0639192Y2 (en) | Pipe fitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |