CN218907517U

CN218907517U - Oil pipe interface sealing structure

Info

Publication number: CN218907517U
Application number: CN202223369369.9U
Authority: CN
Inventors: 吕海明; 李伟刚; 陈益昌
Original assignee: Wuxing Bicycle Co ltd
Current assignee: Wuxing Bicycle Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-04-25
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses an oil pipe interface sealing structure, which comprises: the device comprises a shell, an oil pipe and an oil needle; an installation cavity is formed in the shell; the mounting cavity is internally and in threaded connection with a threaded sleeve which can be adjusted up and down along the mounting cavity; a pressing ring is also arranged in the mounting cavity; the thread bush is screwed into the mounting cavity from the upper end of the mounting cavity and compresses the pressing ring; the threaded sleeve and the pressing ring form an installation jack together; the oil pipe is provided with a first through hole; the oil needle is formed with a large end part and a plug-in end; the large end part and the plug-in end are jointly formed with a second through hole; the periphery of the plug-in end is provided with a plurality of reverse taper steps; the whole body is inserted into the installation jack; the lower end of the thread sleeve is provided with a first conical surface; the upper end of the holding ring is provided with a second conical surface for matching with the first conical surface. In the process of pressing the thread sleeve to the clamping ring, the first conical surface tightens the second conical surface, so that the purpose of pressing the clamping ring to clamp the oil pipe is achieved, the oil pipe connection can be effectively prevented from being separated, and the tightness is better.

Description

Oil pipe interface sealing structure

Technical Field

The utility model relates to the technical field of disc brake oil pipes, in particular to an oil pipe interface sealing structure.

Background

An oil pipe connecting structure is arranged at the brake handle of the bicycle, and brake fluid in the oil pipe is introduced into the brake structure in the brake handle, so that the brake structure is braked. The existing oil pipe connector is used for splicing an oil pipe and an oil needle to form a whole, then the whole is inserted into a mounting hole formed by a mounting shell of a brake crank, and then the whole is fixed in the mounting hole by screwing a nut sleeved on the periphery of the whole on the shell. The oil pipe interface has poor sealing performance, and oil leakage and oxidation of internal metal structures can occur when the oil pipe interface is used for a long time. Meanwhile, the oil needle and the oil pipe are easy to fall off, so that the oil needle is blocked in the mounting hole.

Disclosure of Invention

In order to solve the problems, the technical scheme provided by the utility model is as follows:

an oil pipe interface sealing structure comprising: the device comprises a shell, an oil pipe and an oil needle; an installation cavity is formed in the shell; the mounting cavity is internally and in threaded connection with a threaded sleeve which can be adjusted up and down along the mounting cavity; a pressing ring is also arranged in the mounting cavity; the thread bush is screwed into the mounting cavity from the upper end of the mounting cavity and compresses the pressing ring; the threaded sleeve and the pressing ring form an installation jack together; the oil pipe is provided with a first through hole; the oil needle is formed with a large end part and a plug-in end; the large end part and the plug-in end are jointly formed with a second through hole which is used for communicating with the first through hole; the plug-in end is plugged into the first through hole from the lower end of the oil pipe so as to form a whole with the oil pipe; the periphery of the plug-in end is provided with a plurality of reverse taper steps which are distributed along the axial direction of the plug-in end to improve the tightness between the oil pipe and the oil needle; the whole body is inserted into the installation jack; the lower end of the thread sleeve is provided with a first conical surface; the upper end of the holding ring is provided with a second conical surface for matching with the first conical surface.

Further, a first sealing ring for sealing a gap between the end face of the large end part and the pressing ring is arranged between the end face of the large end part and the pressing ring.

Further, a second sealing ring for sealing a gap between the holding ring and the shell is arranged between the holding ring and the shell.

Further, a step hole is formed at the bottom of the mounting cavity;

the periphery of the lower end of the holding ring is provided with a step-shaped concave part for matching with the step hole.

Further, the second sealing ring is arranged in the step hole.

Further, the outer periphery of the large end portion is formed with a seal external thread for pressing contact with the pressing ring to improve sealability.

Further, the press-holding ring is made of brass; the thread sleeve is made of alloy steel

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

the oil pipe interface seal structure that this application embodiment provided is compressing tightly at the thread bush, and the pressure is held the ring and is locked the whole that oil needle and oil pipe constitute under the common constraint of thread bush and casing, and can not appear irregular deformation, and such locking mode sealing performance is better, and the circumference atress of thread bush, clamp ring and casing is even, can not cause the screw thread smooth tooth because of locking force is too big, and the thread bush can be dismantled in the direct rotation when dismantling. Meanwhile, the reverse taper step is arranged on the periphery of the oil needle, so that the sealing performance between the oil needle and the oil pipe can be further improved, the firmness of the installation structure of the oil needle can be improved, and the situation that the oil needle falls off and is blocked in the installation jack is avoided.

Drawings

FIG. 1 is an exploded view of an oil pipe interface seal structure according to the present application;

FIG. 2 is a cross-sectional view of an oil pipe interface seal structure according to the present application;

the oil pipe interface sealing structure 10, the shell 11, the mounting cavity 111, the step hole 112, the oil pipe 12, the first through hole 121, the oil needle 13, the large end part 131, the plug end 132, the second through hole 133, the reverse taper step 134, the sealing external thread 135, the thread bush 14, the first taper surface 141, the pressing ring 15, the second taper surface 151, the step concave part 152, the mounting jack 16, the first sealing ring 17 and the second sealing ring 18.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings. The first, second, etc. words are provided for convenience in describing the technical scheme of the present utility model, and have no specific limitation, and are all generic terms, and do not constitute limitation to the technical scheme of the present utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The technical schemes in the same embodiment and the technical schemes in different embodiments can be arranged and combined to form a new technical scheme without contradiction or conflict, which is within the scope of the utility model.

Example 1

As shown in fig. 1, an oil pipe interface sealing structure 10 according to the present utility model includes: the shell 11, the oil pipe 12 and the oil needle 13, the oil needle 13 and the oil pipe 12 are inserted into a whole, then the oil needle 13 and the oil pipe 12 are jointly installed in the shell 11 to form an oil pipe 12 interface of a brake, the brake of the bicycle is injected into an internal brake assembly through the oil pipe 12 and the oil needle 13 to inject lubricating oil, and the sealing performance of the oil pipe 12 interface influences the lubricating performance of the brake. Specifically, an installation cavity 111 is formed in the housing 11, an internal thread 113 is formed on the inner wall of the installation cavity 111, a thread bush 14 is connected in the installation cavity 111 through the internal thread 113 in a threaded manner, and the position of the thread bush 14 can be adjusted by rotating the thread bush 14, namely, the thread bush 14 can be adjusted up and down along the installation cavity 111. The installation cavity 111 is internally provided with a pressing ring 15, the threaded sleeve 14 is screwed into the installation cavity 111 from the upper end of the installation cavity 111 and is pressed above the pressing ring 15, the pressing ring 15 is made of brass, the threaded sleeve 14 is made of alloy steel, the lower end of the threaded sleeve 14 is provided with a first conical surface 141, and the upper end of the pressing ring 15 is provided with a second conical surface 151 for matching with the first conical surface 141. The first conical surface 141 and the second conical surface 151 are matched and locked when the thread sleeve 14 is pressed against the holding ring 15, so that a good closing-up effect is generated by the extrusion of a cone angle, and the tightness is effectively improved. The press-holding ring 15 is made of brass and the screw bush 14 is made of alloy steel, so that the structural rigidity can be ensured by the cooperation of the brass and the alloy steel, and the biting performance can be improved by the characteristic of lower hardness of the brass, thereby improving the sealing performance.

As shown in fig. 2, the threaded sleeve 14 and the press ring 15 are formed together with a mounting socket 16. The oil pipe 12 is formed with a first through hole 121. The oil needle 13 is formed with a large end portion and a plug-in end 132, and the large end portion and the plug-in end 132 are formed with a second passage together, and the second through hole 133 is used for communicating with the first through hole 121 so as to realize lubrication oil drainage. The insertion end 132 is inserted into the first through hole 121 from the lower end of the oil pipe 12 to form a whole with the oil pipe 12, and a plurality of reverse taper steps 134 distributed along the axial direction of the insertion end 132 are formed on the periphery of the insertion end 132, and the reverse taper steps 134 can improve the tightness between the oil pipe 12 and the oil needle 13, and can also increase the friction between the oil needle 13 and the oil pipe 12, improve the firmness of the connection structure between the oil needle 13 and the oil pipe 12, and ensure that the oil pipe 12 is not loosened. The whole formed by the oil pipe 12 and the oil needle 13 is inserted into the mounting jack 16, and is locked through taper angle extrusion before the thread sleeve 14 and the pressing ring 15, so that the stability of the whole mounting structure is ensured, and the whole loosening is avoided.

The oil pipe interface sealing structure 10 locks the whole body formed by the oil needle 13 and the oil pipe 12 under the common constraint of the thread sleeve 14 and the shell 11 when the thread sleeve 14 is tightly pressed, and the irregular deformation cannot occur, so that the sealing performance of the locking mode is better, thread sliding teeth cannot be caused due to overlarge locking force, the thread sleeve 14 can be directly rotated and disassembled during disassembly, and the condition that the installation structure is blocked is avoided. Meanwhile, the reverse taper step 134 is arranged on the periphery of the oil needle 13, so that the sealing performance between the oil needle 13 and the oil pipe 12 can be further improved, the firmness of the installation structure of the oil needle 13 can be improved, and the situation that the oil needle 13 falls off and is blocked in the installation jack 16 is avoided. In the process of pressing the thread sleeve 14 to the clamping ring 15, the first conical surface 141 tightens the second conical surface 151, so that the purpose of pressing the clamping ring to clamp the oil pipe is achieved, the oil pipe connection can be effectively prevented from being separated, and the tightness is better.

As a specific embodiment, the first sealing ring 17 is arranged between the end face of the large end part and the pressing ring 15, and the gap between the end face of the large end part and the pressing ring 15 can be better sealed by the elastic pressing force of the first sealing ring 17. A second sealing ring 18 is arranged between the pressing ring 15 and the shell 11, and a gap between the pressing ring 15 and the shell 11 can be better sealed through elastic pressing force of the second sealing ring 18. Thus, the sealing performance of the whole installation structure can be further improved through the two sealing rings.

As a specific embodiment, a stepped hole 112 is formed at the bottom of the mounting chamber 111, and a stepped recess 152 for engaging the stepped hole 112 is formed at the outer periphery of the lower end of the holding ring 15. The stepped hole 112 and the stepped recess 152 not only limit the positions of the needle 13 and the pipe 12, but also extend the sealing stroke and improve the sealing performance. The second seal ring 18 is specifically disposed in the stepped hole 112.

As a specific embodiment, the outer periphery of the large end portion is formed with a seal external thread 135, and the seal external thread 135 is used for being in pressing contact with the pressing ring 15, so that the seal stroke can be increased, the sealing performance can be improved, the mounting locking performance can be improved, and the firmness of the mounting structure can be improved.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. An oil pipe interface sealing structure comprising: the device comprises a shell, an oil pipe and an oil needle; the device is characterized in that an installation cavity is formed in the shell; the mounting cavity is internally and in threaded connection with a threaded sleeve capable of being adjusted up and down along the mounting cavity; a pressing ring is also arranged in the mounting cavity; the thread sleeve is screwed into the mounting cavity from the upper end of the mounting cavity and compresses the pressing ring; the thread sleeve and the pressing ring form a mounting jack together; the oil pipe is provided with a first through hole; the oil needle is formed with a large end part and a plug-in end; the large end part and the plug-in end are jointly formed with a second through hole which is used for communicating with the first through hole; the inserting end is inserted into the first through hole from the lower end of the oil pipe so as to form a whole with the oil pipe; the periphery of the insertion end is provided with a plurality of reverse taper steps which are distributed along the axial direction of the insertion end so as to improve the tightness between the oil pipe and the oil needle; the whole body is inserted into the installation jack; the lower end of the thread sleeve is provided with a first conical surface; the upper end of the pressing ring is provided with a second conical surface which is used for matching with the first conical surface.

2. The tubing interface seal as claimed in claim 1, wherein,

a first sealing ring for sealing a gap between the end face of the large end part and the pressing ring is arranged between the end face of the large end part and the pressing ring.

3. The tubing interface seal as claimed in claim 1, wherein,

a second sealing ring for sealing a gap between the pressing ring and the shell is arranged between the pressing ring and the shell.

4. The tubing interface seal as claimed in claim 3, wherein,

a step hole is formed at the bottom of the mounting cavity;

the periphery of the lower end of the pressing ring is provided with a step-shaped concave part for matching with the step hole.

5. The tubing interface seal as claimed in claim 4, wherein,

the second sealing ring is arranged in the step hole.

6. The tubing interface seal as claimed in claim 1, wherein,

the outer periphery of the large end part is provided with a sealing external thread for being in pressing contact with the pressing ring so as to improve the sealing performance.

7. The tubing interface seal as claimed in claim 1, wherein,

the pressing ring is made of brass; the thread bush is made of alloy steel.