CN210335777U - O-shaped sealing ring mounting tool - Google Patents
O-shaped sealing ring mounting tool Download PDFInfo
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- CN210335777U CN210335777U CN201920873273.5U CN201920873273U CN210335777U CN 210335777 U CN210335777 U CN 210335777U CN 201920873273 U CN201920873273 U CN 201920873273U CN 210335777 U CN210335777 U CN 210335777U
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Abstract
The utility model provides a O type sealing washer mounting tool. The tool comprises: a shank portion and a guard portion; wherein, the taper shank part comprises a taper with taper and a cylinder extending along the smooth transition of the taper; the O-shaped ring is sleeved into the taper shank part from the small end of the taper body and slides to the cylinder under the action of thrust, the O-shaped ring elastically expands to the outer diameter of the cylinder along the taper radial direction of the taper body, and the outer diameter of the cylinder is the size of the O-shaped ring to be installed; the protective part extends from the edge of the bottom surface of the taper shank part; the inner cavity of the protection part is sleeved with the unfavorable structure of the part to be installed along the axial direction of the part to be installed until the front end of the protection part reaches the installation groove on the part to be installed; the inner diameter of the guard portion is equal to the maximum solid outer diameter of the disadvantageous structure and the design clearance value. The tool solves the problems that the O-shaped sealing ring is difficult to install, low in efficiency and easy to scratch the surface of the O-shaped sealing ring.
Description
Technical Field
The utility model belongs to the oil blanket assembly technique relates to a O type sealing washer mounting tool.
Background
During the assembling process of main and tail rotor hubs of a Z8 series, the assembling problem of an O-shaped sealing ring for radial sealing is often encountered, such as a horizontal hinged hollow plug cover and the like. The O-shaped sealing ring is a rubber ring with a circular section, is arranged in the sealing groove, is tightly pressed and deformed by the installation of all matching parts, and finally has no gap in the whole sealing groove, thereby sealing the liquid medium. While such simple sealing structures work well for sealing in fluid systems, they also rely on proper installation to function. Problems in mounting: the sealing groove is often far away from the two ends of the part, structures such as threads and steps can be formed between the sealing groove and the two ends of the part, so that the O-shaped sealing ring is difficult to install and low in efficiency, and meanwhile, the thread profile and the step sharp edge are very sharp, so that the surface of the O-shaped sealing ring is easily scratched, and the sealing groove is also an important reason for causing sealing failure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the problem of O type sealing washer pack into more difficult, the inefficiency and easy fish tail O type sealing washer surface is solved.
The technical scheme of the utility model is that:
in a first aspect, an O-ring installation tool is provided, including: a shank portion and a guard portion;
wherein, the taper shank part comprises a taper with taper and a cylinder extending along the smooth transition of the taper;
the O-shaped ring is sleeved into the taper shank part from the small end of the taper body and slides to the cylinder under the action of thrust, the O-shaped ring elastically expands to the outer diameter of the cylinder along the taper radial direction of the taper body, and the outer diameter of the cylinder is the size of the O-shaped ring to be installed;
the protective part extends from the edge of the bottom surface of the taper shank part; the inner cavity of the protection part is sleeved with the unfavorable structure of the part to be installed along the axial direction of the part to be installed until the front end of the protection part reaches the installation groove on the part to be installed;
the inner diameter of the guard portion is equal to the maximum solid outer diameter of the disadvantageous structure and the design clearance value.
Further, the depth of the inner cavity of the protection part is equal to the distance from the end face of the part to be installed to the nearest side wall of the installation groove.
Further, the outer diameter of the cylinder is smaller than or equal to the maximum elastic expansion diameter of the O-shaped ring.
Furthermore, the front end of the protection part is provided with a chamfer so that the O-shaped ring can freely slide into the mounting groove from the protection part.
Further, the diameter of the small end is smaller than that of the O-shaped ring in a free state.
Furthermore, a plurality of O-shaped rings to be installed are sleeved on the O-shaped sealing ring installing tool, so that subsequent continuous installation is facilitated.
The utility model has the advantages that: the utility model relates to a O type sealing washer mounting tool optimizes the rubber ring installation condition, can prevent the rubber ring fish tail, can improve assembly efficiency again.
Drawings
FIG. 1 is a schematic structural view of an O-ring installation tool;
fig. 2 is a sectional view of an O-ring installation tool.
Detailed Description
The present invention will be described in further detail below.
As shown in fig. 1, the O-ring installation tool 1 is composed of two parts:
the taper shank portion 11: the O-shaped ring is composed of a cone 111 with a certain taper and a cylinder 112 extending along with the cone in a smooth transition mode, and has the function of quickly centering and installing the O-shaped ring, so that the inner diameter of the O-shaped ring is uniformly expanded to the installation size;
disadvantageous structures include structures that can scratch the O-ring, such as threads, steps. The protection portion 12: the O-shaped ring is of a thin-wall cylindrical sleeve structure, and is sleeved on threads or steps to protect the O-shaped ring, so that the O-shaped ring is kept away from an unfavorable structure, the surface of the O-shaped ring is prevented from being scratched, and the O-shaped ring is guided to slide into a sealing groove at a specified position.
As shown in fig. 2, the O-ring mounting tool 1 is used in the following principle:
1) sleeving a protection part 12 of the mounting tool 1 on the part 3 to be mounted to ensure that the part is attached in place;
2) coating lubricating grease on the surfaces of the O-shaped sealing rings 2, and sleeving taper shank parts 11 of the mounting tools 1 with certain taper one by one to arrange (as shown in the figure);
3) lightly pushing the O-shaped sealing ring 2 by hand to enable the O-shaped sealing ring to slide into the mounting groove at the designated position, and then completing the mounting of the O-shaped sealing ring 2;
4) and then the mounting tool 1 is pulled out and separated from the part 3 to be mounted, and the mounting of other O-shaped sealing rings is completed by repeated operation.
When manufacturing the tool, it should be noted that the inner cavity d of the protective part 12 of the setting tool 1 should have a certain clearance with respect to the outer diameter d1 of the part 3 to be mounted. In addition, the outside diameter D of the shank portion 11 should not be too large to cause plastic deformation of the oil seal ring. The outer surface of the entire installation tool 1 should be smooth so that the O-ring 2 slides freely on it. The depth L of the thin-walled cylindrical sleeve hole (i.e., the inner cavity) of the protection portion 12 can be processed according to the part of the oil seal part with the same specification where the seal groove is farthest from the end face, so that one tool can be used for multiple parts.
Through the actual verification the utility model discloses instrument simple structure, easy preparation, convenient operation, and assembly efficiency is high, of high quality, and the suitability is stronger simultaneously.
Claims (6)
1. An O-ring installation tool, comprising: a shank portion and a guard portion;
wherein, the taper shank part comprises a taper with taper and a cylinder extending along the smooth transition of the taper;
the O-shaped ring is sleeved into the taper shank part from the small end of the taper body and slides to the cylinder under the action of thrust, the O-shaped ring elastically expands to the outer diameter of the cylinder along the taper radial direction of the taper body, and the outer diameter of the cylinder is the size of the O-shaped ring to be installed;
the protective part extends from the edge of the bottom surface of the taper shank part; the inner cavity of the protection part is sleeved with the unfavorable structure of the part to be installed along the axial direction of the part to be installed until the front end of the protection part reaches the installation groove on the part to be installed;
the inner diameter of the guard portion is equal to the maximum solid outer diameter of the disadvantageous structure and the design clearance value.
2. The tool of claim 1, wherein the depth of the cavity in the guard portion is equal to the distance from the end surface of the part to be mounted to the nearest side wall of the mounting slot.
3. The tool of claim 1, wherein the outer diameter of the cylinder is less than or equal to the maximum elastic expansion diameter of the O-ring.
4. The tool of claim 1, wherein the front end of the guard portion is chamfered to facilitate free sliding of the O-ring from the guard portion into the mounting groove.
5. The tool of claim 1, wherein the small end has a diameter smaller than a diameter of the O-ring in a free state.
6. The tool of claim 1, wherein the O-ring installation tool is sleeved with a plurality of O-rings to be installed to facilitate subsequent successive installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873273.5U CN210335777U (en) | 2019-06-11 | 2019-06-11 | O-shaped sealing ring mounting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873273.5U CN210335777U (en) | 2019-06-11 | 2019-06-11 | O-shaped sealing ring mounting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210335777U true CN210335777U (en) | 2020-04-17 |
Family
ID=70185418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920873273.5U Active CN210335777U (en) | 2019-06-11 | 2019-06-11 | O-shaped sealing ring mounting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210335777U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112894718A (en) * | 2021-01-29 | 2021-06-04 | 同济大学 | A rubber circle appurtenance for split type gasket |
| CN113532235A (en) * | 2021-07-30 | 2021-10-22 | 江西昌河航空工业有限公司 | Tool and method for measuring center inner diameter of O-shaped sealing ring |
| CN113561122A (en) * | 2021-07-08 | 2021-10-29 | 西安航空制动科技有限公司 | Tool and method for mounting sealing ring on shaft rod |
-
2019
- 2019-06-11 CN CN201920873273.5U patent/CN210335777U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112894718A (en) * | 2021-01-29 | 2021-06-04 | 同济大学 | A rubber circle appurtenance for split type gasket |
| CN113561122A (en) * | 2021-07-08 | 2021-10-29 | 西安航空制动科技有限公司 | Tool and method for mounting sealing ring on shaft rod |
| CN113561122B (en) * | 2021-07-08 | 2023-03-10 | 西安航空制动科技有限公司 | Tool for mounting sealing ring on shaft lever and mounting method |
| CN113532235A (en) * | 2021-07-30 | 2021-10-22 | 江西昌河航空工业有限公司 | Tool and method for measuring center inner diameter of O-shaped sealing ring |
| CN113532235B (en) * | 2021-07-30 | 2023-03-28 | 江西昌河航空工业有限公司 | Tool and method for measuring center inner diameter of O-shaped sealing ring |
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