阅读说明：本技术 一种小口径密封组件深孔安装的辅助结构 (Auxiliary structure for deep hole installation of small-caliber sealing assembly ) 是由 林晓明 于 2020-05-09 设计创作，主要内容包括：本发明公开了一种小口径密封组件深孔安装的辅助结构,包括具有安装孔的底座、导向套、推力轴和密封组件；安装孔的侧壁开设有供密封组件装配的环槽；导向套设置有供推力轴穿设的通孔,通孔的进口设置有导向角,通孔的出口周缘设置有环状凸缘,环状凸缘与安装孔相匹配；推力轴的一端为若干弹臂,弹臂组成的外圆半径大于通孔的半径,弹臂的顶端设置有供密封组件配合的台阶；安装时,密封组件配合在台阶上,并由推力轴推入通孔后产生收缩变形,在到达环槽的位置后恢复初始状态以装配到环槽中。本发明能够实现小口径密封组件的深孔安装,并保证尺寸变化小、不影响密封效果。(The invention discloses an auxiliary structure for deep hole installation of a small-caliber sealing assembly, which comprises a base with an installation hole, a guide sleeve, a thrust shaft and a sealing assembly, wherein the guide sleeve is arranged on the base; the side wall of the mounting hole is provided with a ring groove for assembling the sealing component; the guide sleeve is provided with a through hole for the thrust shaft to penetrate through, the inlet of the through hole is provided with a guide angle, the periphery of the outlet of the through hole is provided with an annular flange, and the annular flange is matched with the mounting hole; one end of the thrust shaft is provided with a plurality of elastic arms, the radius of the excircle formed by the elastic arms is larger than that of the through hole, and the top ends of the elastic arms are provided with steps matched with the sealing assembly; when the sealing assembly is installed, the sealing assembly is matched on the step, is pushed into the through hole by the thrust shaft to generate shrinkage deformation, and returns to the initial state after reaching the position of the ring groove to be assembled into the ring groove. The invention can realize the deep hole installation of the small-caliber sealing assembly and ensure that the size change is small and the sealing effect is not influenced.)

1. The utility model provides an auxiliary structure of small-bore seal assembly deep hole installation which characterized in that: the device comprises a base with a mounting hole, a guide sleeve, a thrust shaft and a sealing assembly; a ring groove for assembling the sealing component is formed in the side wall of the mounting hole; the guide sleeve is provided with a through hole for the thrust shaft to penetrate through, the inlet of the through hole is provided with a guide angle, the periphery of the outlet of the through hole is provided with an annular flange, and the annular flange is matched with the mounting hole; one end of the thrust shaft is provided with a plurality of elastic arms, the radius of an excircle formed by the elastic arms is larger than that of the through hole, and the top ends of the elastic arms are provided with steps matched with the sealing assembly;

during installation, the sealing assembly is matched on the step, is pushed into the through hole by the thrust shaft to generate shrinkage deformation, and is restored to an initial state after reaching the position of the ring groove to be assembled into the ring groove.

2. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 1, wherein:

the guide angle is 15 °.

3. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 1, wherein:

the base is made of metal or plastic.

4. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 1, wherein:

the guide sleeve is made of polyformaldehyde, polyether-ether-ketone or metal; the thrust shaft is made of polyformaldehyde or polyether ether ketone.

5. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 1, wherein:

the sealing component is a GREEN or a Stent seal.

6. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 1, wherein:

the other end of the thrust shaft is provided with a limiting flange, and the radius of the limiting flange is larger than the inlet of the through hole.

7. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 6, wherein:

the height of the guide sleeve and the depth from the surface of the base to the annular groove are equal to the distance between the limiting flange and the step.

8. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 1, wherein:

the sealing assembly is characterized by further comprising a plurality of restoring assemblies, wherein the restoring assemblies are mounted on the side wall of the step and used for outwards pushing the sealing assembly.

9. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 1, wherein:

the restoring assemblies are arranged on the steps at equal angular intervals along the circumferential direction of the thrust shaft.

10. The auxiliary structure for deep-hole installation of the small-caliber sealing assembly according to claim 9, wherein:

the restoring assembly comprises a spring and a pin, wherein the side wall of the step is provided with a mounting groove, and the spring and the pin are sequentially inserted into the mounting groove.

Technical Field

The invention relates to the technical field of sealing, in particular to an auxiliary structure for deep hole installation of a small-caliber sealing assembly.

Background

At present, the installation of the check ring gasket assemblies such as the Gray ring, the Stent seal and the like on the market generally adopts manual installation, engineering plastics or high polymer materials are soaked in hot water for a few minutes and then taken out to be bent into a heart shape by hands and then put into a groove to finish the installation, or a simple tool is used for replacing the manual bending shape. The mounting method and the tool mounting have no problem, but when the size is small, particularly the outer diameter is less than 20mm, the grail ring is difficult to or cannot extend into the hole by hands or a substitute tool to be placed in the groove, even if the mounting can be completed, the part or the product can fail due to the fact that the size change is too large and exceeds the deformation amount of the material, and the part or the product can not be recovered to the original state, and even the part or the product is damaged in the forced mounting process.

Disclosure of Invention

The invention aims to provide an auxiliary structure for deep hole installation of a small-caliber sealing assembly, which can realize the deep hole installation of the small-caliber sealing assembly and ensure that the size change is small and the sealing effect is not influenced.

In order to achieve the above purpose, the solution of the invention is:

an auxiliary structure for deep hole installation of a small-caliber sealing assembly comprises a base with an installation hole, a guide sleeve, a thrust shaft and a sealing assembly; a ring groove for assembling the sealing component is formed in the side wall of the mounting hole; the guide sleeve is provided with a through hole for the thrust shaft to penetrate through, the inlet of the through hole is provided with a guide angle, the periphery of the outlet of the through hole is provided with an annular flange, and the annular flange is matched with the mounting hole; one end of the thrust shaft is provided with a plurality of elastic arms, the radius of an excircle formed by the elastic arms is larger than that of the through hole, and the top ends of the elastic arms are provided with steps matched with the sealing assembly; during installation, the sealing assembly is matched on the step, is pushed into the through hole by the thrust shaft to generate shrinkage deformation, and is restored to an initial state after reaching the position of the ring groove to be assembled into the ring groove.

The guide angle is 15 °.

The base is made of metal or plastic.

The guide sleeve is made of polyformaldehyde, polyether-ether-ketone or metal; the thrust shaft is made of polyformaldehyde or polyether ether ketone.

The sealing component is a GREEN or a Stent seal.

The other end of the thrust shaft is provided with a limiting flange, and the radius of the limiting flange is larger than the inlet of the through hole.

The height of the guide sleeve and the depth from the surface of the base to the annular groove are equal to the distance between the limiting flange and the step.

The auxiliary structure for deep hole installation of the small-caliber sealing assembly further comprises a plurality of restoring assemblies, and the restoring assemblies are installed on the side wall of the step and used for outwards pushing out the sealing assembly.

The restoring assemblies are arranged on the steps at equal angular intervals along the circumferential direction of the thrust shaft.

The restoring assembly comprises a spring and a pin, wherein the side wall of the step is provided with a mounting groove, and the spring and the pin are sequentially inserted into the mounting groove.

After the technical scheme is adopted, the sealing assembly is installed in an auxiliary mode through the guide sleeve and the thrust shaft, particularly for the sealing assembly with a small diameter, the sealing assembly is naturally contracted in the through hole during installation and pushed into the annular groove by the elastic arm until the sealing assembly reaches the position of the annular groove, and then the sealing assembly is restored to the initial position to be matched in the annular groove, so that the size change is small, and the sealing effect is not influenced; each part synchronous motion of seal assembly can be guaranteed through step promotion seal assembly, avoids taking place the dislocation when pushing and leads to sealed effect variation.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 1;

the reference numbers illustrate: a base 1; a mounting hole 11; a ring groove 12; a guide sleeve 2; a through hole 21; an annular flange 22; a thrust shaft 3; an elastic arm 31; a step 32; a position-limiting flange 33; a mounting groove 34; a seal assembly 4; a recovery assembly 5; a spring 51; and a pin 52.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

The invention relates to an auxiliary structure for deep hole installation of a small-caliber sealing assembly, which comprises a base 1 with an installation hole 11, a guide sleeve 2, a thrust shaft 3 and a sealing assembly 4.

The side wall of the mounting hole 11 is provided with an annular groove 12 for assembling the sealing component 4.

The guide sleeve 2 is provided with a through hole 21 for the thrust shaft 3 to penetrate through, the inlet of the through hole 21 is provided with a guide angle α, the periphery of the outlet of the through hole 21 is provided with an annular flange 22, and the annular flange 22 is matched with the mounting hole 11.

One end of the thrust shaft 3 is provided with a plurality of elastic arms 31, the outer circle radius formed by the elastic arms 31 is larger than the radius of the through hole 21, and the top end of the elastic arm 31 is provided with a step 32 for matching the sealing component 4.

When mounted, the seal assembly 4 is fitted on the step 32 and is shrunk and deformed by being pushed into the through hole 21 by the thrust shaft 3, and returns to the original state after reaching the position of the ring groove 12 to be fitted into the ring groove 12.

Referring to fig. 1-3, a specific embodiment of the present invention is shown.

The guide angle α is 15.

The base 1 is made of metal or plastic; the guide sleeve 2 is made of polyformaldehyde, polyether-ether-ketone or metal, can provide high enough hardness, is not easy to damage, and has smooth surface and high surface smoothness after being processed; the thrust shaft 3 is made of polyformaldehyde or polyether ether ketone, can provide high enough hardness, is not easy to be worn and damaged, is convenient to process, ensures smooth surface and high surface smoothness after being processed, has certain toughness, and can ensure that a product or a part can be quickly recovered and continuously used after being installed into a corresponding groove and taken out of the thrust shaft 3.

The sealing component 4 is a combination of a Glare ring, a Stent seal or other check ring gaskets, and is formed by combining a high polymer material or engineering plastics with rubber O-shaped rings, star-shaped rings, P-shaped rings and the like.

The other end of the thrust shaft 3 is a limit flange 33, and the radius of the limit flange 33 is larger than the inlet of the through hole 21, so that the thrust shaft 3 is prevented from excessively penetrating into the through hole 21 and being difficult to take out.

Height H of the guide sleeve 2₁Plus the depth H from the surface of the base 1 to the ring groove 12₂Equal to the distance H between the stop flange 33 and the step 32₃When it is installedThe thrust shaft 3 can be pushed to the bottom directly, and the sealing assembly 4 just reaches the position of the ring groove 12.

The present invention further comprises a plurality of restoring members 5, the restoring members 5 being mounted on the side walls of the step 32 for pushing the sealing member 4 outward to ensure that the sealing member 4 can be completely restored to the original state.

The restoring assemblies 5 are mounted on the respective steps 32 at equal angular intervals in the circumferential direction of the thrust shaft 3.

The above-mentioned restoring assembly 5 includes a spring 51 and a pin 52, the side wall of the step 32 is provided with a mounting groove 34, and the spring 51 and the pin 52 are sequentially inserted in the mounting groove 34.

The radius of the through hole 21 is slightly smaller than that of the mounting hole 11, and the side wall of the annular flange 22 is thin-walled to prevent excessive deformation of the seal assembly 4 and improve the rapidity and convenience of installation.

The base 1 refers to a grooved component to be mounted with parts or products in the groove.

The installation process of the invention is that the annular flange 22 of the guide sleeve 2 is embedded into the installation hole 11 of the base 1 and is tightly matched, the thrust shaft 3 is horizontally placed on a platform, the sealing component 4 (Glare ring or Stent seal) is placed on the step 32 at the top end of the thrust shaft 3, the thrust shaft 3 is slowly pushed into the through hole 21 through the guide angle α of the guide sleeve 2 by hands or an auxiliary press and reaches the position of the annular groove 12, and when the sound that the thrust shaft 3 and the guide sleeve 2 touch is heard, the surface part or the product reaches the set position, and the installation is finished.

Through the scheme, the guide sleeve 2 and the thrust shaft 3 are used for assisting in installing the sealing assembly 4, particularly for the sealing assembly 4 with a small diameter, the sealing assembly is naturally contracted in the through hole 21 during installation and pushed by the elastic arm 31 until reaching the position of the annular groove 12, and then the sealing assembly is restored to the initial position to be matched in the annular groove 12, so that the size change is small, and the sealing effect is not influenced; the sealing assembly 4 is pushed by the step 32, so that synchronous movement of all parts of the sealing assembly 4 can be guaranteed, and the sealing effect is prevented from being poor due to dislocation when the sealing assembly is pushed.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.