CN211042588U - Manual internal expanding structure - Google Patents
Manual internal expanding structure Download PDFInfo
- Publication number
- CN211042588U CN211042588U CN201922465244.8U CN201922465244U CN211042588U CN 211042588 U CN211042588 U CN 211042588U CN 201922465244 U CN201922465244 U CN 201922465244U CN 211042588 U CN211042588 U CN 211042588U
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- pull rod
- pressing block
- inner pull
- rotating seat
- pin
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Abstract
The utility model relates to a manual inner expansion structure, which comprises an inner pull rod, a rotating pin, a rotating seat, a boss pressing block and an O-shaped ring; the rotary seat and the inner pull rod are assembled through a boss pressing block, an O-shaped ring seal is arranged at the connecting position of the boss pressing block and the inner pull rod in the circumferential direction, a pin hole is formed in the center of the rear end of the inner pull rod, a hole corresponding to the pin hole is formed in the corresponding assembling position of the rotary seat, and the rotary pin is inserted into the two holes; the structure tightens the inner pull rod by rotating the semicircular arc-shaped rotating seat so as to compress the O-shaped ring, and the purposes of tightly attaching to a part to be tested and sealing without leakage are achieved.
Description
Technical Field
The utility model relates to a frock, specifically speaking are manual internal expanding structure.
Background
The sealed detection of traditional cylinder hole adopts O type circle and screw fastening or O type circle and cylinder fastening sealed usually, adopts O type circle and screw fastening to need on the part or detect the screw hole that has the use on the frock, adopts O type circle and cylinder fastening to need part spatial position more abundant and hardly compatible multiple part, consequently to some part structure more complicated, under the more compact or compatible multiple part requirement circumstances of needs of product spatial position, above-mentioned traditional scheme just hardly competes, the utility model relates to a manual internal expanding structure can solve above-mentioned problem effectively, when promoting product quality, has also improved the assembly efficiency of product.
Disclosure of Invention
The utility model aims to overcome the not enough of existence among the prior art, to above-mentioned defect, this patent provides a manual internal expanding structure, according to the utility model provides a technical scheme: a manual internal expanding structure is characterized in that,
Comprises an inner pull rod, a rotating pin, a rotating seat, a boss pressing block and an O-shaped ring;
The rotating seat and the inner pull rod are assembled through a boss pressing block,
An O-shaped ring seal is circumferentially arranged at the joint of the boss compression block and the inner pull rod, a pin hole is formed in the center of the rear end of the inner pull rod, a hole corresponding to the pin hole is formed in the corresponding assembly position of the rotary seat, and the rotary pin is inserted into the two holes;
Further, the inner draw bar comprises a first part and a second part which are integrally formed;
A counter bore is formed in the axial center of the inner pull rod;
The first part is in a conical structure, and the second part is in a cylindrical structure with a groove formed in the surface.
Furthermore, the boss pressing block is integrally in a stepped annular structure and comprises a pressing block head portion and a pressing block rear portion which are integrally formed and in stepped transition connection.
Furthermore, the rotating seat is a semi-arc rotating seat, and the rear part of the rotating seat is provided with a hole;
Compared with the prior art, the utility model, the advantage lies in:
The structure tightens the inner pull rod by rotating the semicircular arc-shaped rotating seat so as to compress the O-shaped ring, and the purposes of tightly attaching to a part to be tested and sealing without leakage are achieved.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
As shown in fig. 1: the embodiment discloses a manual internal expanding structure, which is characterized in that,
The device comprises an inner pull rod 1, a rotating pin 3, a rotating seat 4, a boss pressing block 2 and an O-shaped ring 5;
The rotating seat and the inner pull rod are assembled through a boss pressing block 2,
An O-shaped ring 5 is arranged at the connection position of the boss pressing block and the inner pull rod in the circumferential direction for sealing, a pin hole is formed in the center of the rear end of the inner pull rod, a hole corresponding to the pin hole is formed in the corresponding assembly position of the rotating seat, and the rotating pin is inserted into the two holes;
Further, the inner tie rod comprises a first part 1.1 and a second part 1.2 which are integrally formed;
A counter bore 1.4 is formed in the axial center of the inner pull rod;
The first part is in a conical structure, and the second part is in a columnar structure with a groove 1.3 formed in the surface.
Further, the boss pressing block 2 is integrally in a stepped annular structure and comprises a pressing block head portion and a pressing block rear portion which are integrally formed and in stepped transition connection.
Further, the rotating seat 4 is a semi-arc rotating seat, and a hole 4.1 is formed in the rear part of the rotating seat;
The inner pull rod 1 is tensioned by rotating the semi-circular arc-shaped rotating seat 4 so as to compress the O-shaped ring 5, and the purposes of tightly attaching to a part to be tested, sealing and no leakage are achieved.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (4)
1. A manual internal expanding structure is characterized in that,
Comprises an inner pull rod (1), a rotating pin (3), a rotating seat (4), a boss pressing block (2) and an O-shaped ring (5);
The rotating seat and the inner pull rod are assembled through a boss pressing block (2),
An O-shaped ring (5) is arranged at the circumferential direction of the joint of the boss pressing block and the inner pull rod for sealing, a pin hole is formed in the center of the rear end of the inner pull rod, a hole corresponding to the pin hole is formed in the corresponding assembly position of the rotary seat, and the rotary pin is inserted into the two holes.
2. A manual internal expanding structure according to claim 1, wherein: the inner pull rod comprises a first part (1.1) and a second part (1.2) which are integrally formed; a counter bore (1.4) is formed in the axial center of the inner pull rod;
The first part is in a conical structure, and the second part is in a columnar structure with a groove (1.3) formed in the surface.
3. A manual internal expanding structure according to claim 1, wherein: the boss pressing block (2) is integrally in a stepped annular structure and comprises an integrally formed pressing block head part and a pressing block rear part which are in stepped transitional connection.
4. A manual internal expanding structure according to claim 1, wherein: the rotating seat (4) is a semi-arc rotating seat, and the rear part of the rotating seat is provided with a hole (4.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465244.8U CN211042588U (en) | 2019-12-31 | 2019-12-31 | Manual internal expanding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465244.8U CN211042588U (en) | 2019-12-31 | 2019-12-31 | Manual internal expanding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211042588U true CN211042588U (en) | 2020-07-17 |
Family
ID=71530454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922465244.8U Active CN211042588U (en) | 2019-12-31 | 2019-12-31 | Manual internal expanding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211042588U (en) |
-
2019
- 2019-12-31 CN CN201922465244.8U patent/CN211042588U/en active Active
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