CN210424050U - Device for preventing pipe joint from being disassembled by mistake - Google Patents
Device for preventing pipe joint from being disassembled by mistake Download PDFInfo
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- CN210424050U CN210424050U CN201920960267.3U CN201920960267U CN210424050U CN 210424050 U CN210424050 U CN 210424050U CN 201920960267 U CN201920960267 U CN 201920960267U CN 210424050 U CN210424050 U CN 210424050U
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- nut
- pipe joint
- external thread
- joint body
- thread part
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Abstract
A device for preventing mistakenly detaching a pipe joint comprises a pipe joint body, a connecting pipe nut and a connecting pipe, wherein the pipe joint body is provided with an external thread part, a frustum-shaped pressing part and a circular part; an anti-mis-disassembly external thread part is arranged between the external thread part and the circular part of the pipe joint body, and the diameter of the circular part is larger than the thread and the outer diameter of the anti-mis-disassembly external thread part; the anti-misoperation nut is also included; the external thread part on the pipe joint body and the internal thread part of the connecting pipe nut are opposite to the thread direction of the internal thread for preventing the external thread part from being dismounted by mistake and preventing the nut from being dismounted by mistake. The anti-misoperation nut and the joint body form an anti-misoperation pipe joint device, so that the loosening of the pipe joint nut and the joint body is reminded; during the dismantlement, control screw-thread fit and form relative reverse motion, prevent that the mistake tears the nut earlier and rotate, take over the nut motionlessness, play warning and warning effect, realize preventing the mistake and tear open.
Description
Technical Field
The utility model belongs to the technical field of a room air conditioner and refrigeration pipeline connected system technique and specifically relates to a prevent structure device of mistake tear-off coupling.
Background
In the prior art, as shown in fig. 1, a pipe joint connection device includes a pipe joint 1, a pipe joint nut 2 and a connection pipe 3, an external thread portion 11, a frustum-shaped pressing portion 12 and a hexagonal portion 13 for rotating a rotary tool are provided on the pipe joint 1, the pipe joint nut 2 includes an internal thread portion 21, a frustum-shaped portion 22 and a pipe hole portion 23, a connection end of the connection pipe 3 is provided with a flared end 31, the flared end 31 is matched with the frustum-shaped pressing portion 12 and the frustum-shaped portion 22, and the connection pipe 3 extends through the pipe hole portion 23. There are problems: whether the maintenance personnel or the ordinary personnel of the consumers can disassemble the adapter nut only by a wrench.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the utility model provides a prevent mistake and tear coupling device open, it has the characteristics of preventing mistake and tearing open and reminding.
The utility model discloses a realize like this: a device for preventing mistakenly detaching a pipe joint comprises a pipe joint body, a connecting pipe nut and a connecting pipe, wherein an external thread part, a frustum-shaped pressing part and a circular part are arranged on the pipe joint body; the adapter nut is screwed with the external thread of the pipe joint body; it is characterized in that: an anti-mis-disassembly external thread part is arranged between the external thread part and the circular part of the pipe joint body, and the diameter of the circular part is larger than the thread and the outer diameter of the anti-mis-disassembly external thread part;
the anti-misoperation nut is also included;
the external thread part on the pipe joint body and the internal thread part of the connecting pipe nut are opposite to the thread direction of the internal thread for preventing the external thread part from being dismounted by mistake and preventing the nut from being dismounted by mistake.
The anti-mistaken-disassembly pipe joint device is characterized in that: the threads of the external thread part on the pipe joint body and the internal thread part of the connecting pipe nut are right-handed threads;
the threads of the external thread part for preventing the false detachment and the internal thread of the nut for preventing the false detachment are left-handed threads.
The anti-mistaken-disassembly pipe joint device is characterized in that: the anti-mistaken-disassembly pipe joint device is characterized in that: the thread pitch of the external thread part on the pipe joint body and the internal thread part of the connecting pipe nut is more than 1.1 times of the thread pitch of the internal thread of the anti-misoperation disassembly external thread part and the anti-misoperation nut.
The utility model relates to a prevent mistake and tear off coupling device, prevent mistake and tear off the nut and adopt left-handed threaded connected mode with the left-handed external screw thread portion that connects the body, during the dismantlement, rotate the takeover nut, prevent mistake and tear off the nut earlier and rotate, its leading principle is about the screw-thread fit form reverse linear motion and take over the internal thread portion 21 of nut 2 and prevent mistake and tear off the internal thread 41's of nut 4 the pitch of unequal formation differential, the big internal thread of mistake nut of preventing tearing off of pitch connects when the internal thread portion of union nut, the big mistake nut of preventing tearing off of pitch loosens earlier than the internal thread portion of takeover nut when the same corner. The pitch differential pitch ratio is: the anti-false-disassembly nut is more than 1.1 times of the thread pitch of the internal thread part of the adapter nut. Through the structural design and the ingenious application of the pitch differential principle, the purpose of preventing the error disassembly is achieved.
The device has the reminding function, and is used for an operator to think and determine whether the device is wrongly disassembled.
Due to the adoption of the pipeline connecting structure, the anti-misoperation nut and the joint body form an anti-misoperation pipe joint device, so that the warning of loosening of the connecting pipe nut and the joint body part is realized; during the dismantlement, control screw-thread fit and form relative reverse motion, prevent that the mistake tears the nut earlier and rotate, take over the nut motionlessness, play warning and warning effect, realize preventing the mistake and tear open.
Drawings
Figure 1 is a cross-sectional view of the prior art in the industry.
Fig. 2 is a cross-sectional view of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 2, the device for preventing the pipe joint from being mistakenly disassembled comprises a joint body 1, a connecting pipe nut 2 and a connecting pipe 3, wherein an external thread part 11, a frustum-shaped pressing part 12 and a circular part 13 are arranged on the joint body 1, the connecting pipe nut 2 comprises an internal thread part 21, a frustum-shaped part 22 and a pipe hole part 23, a flaring 31 is arranged at the connecting end of the connecting pipe 3, the flaring 31 is matched with the frustum-shaped pressing part 12 and the frustum-shaped part 22, and the connecting pipe 3 penetrates through the pipe hole part 23 to extend out. The pipe hole 15 on the joint body 1 is fixedly connected with the guide pipe 5, the guide pipe 5 is connected with the indoor unit system 6 of the air conditioner, and the connecting pipe 3 is connected with the outdoor unit system 7.
The external thread part 11 on the joint body 1 is a right-handed screw, an anti-mis-disassembly external thread part 14 is arranged between the external thread part 11 and the circular part 13 of the joint body 1, the thread of the anti-mis-disassembly external thread part 14 is a left-handed thread, and the diameter of the circular part 13 is larger than the outer diameter of the anti-mis-disassembly external thread part 14; the internal thread part 21 of the adapter nut 2 is a right-hand thread;
the anti-misoperation nut is characterized by further comprising an anti-misoperation nut 4, wherein an internal thread 41 of the anti-misoperation nut 4 is a left-handed thread;
the anti-tamper nut 4 is screwed with the anti-tamper external thread portion 14 of the joint body 1.
The pitch of the external thread part 11 of the pipe joint body 1 and the internal thread part 21 of the pipe joint nut 2 is 1.1 times or more the pitch of the internal thread 41 of the anti-misremoval external thread part 14 and the anti-misremoval nut 4.
With such a structure, during assembly, first, the female screw 41 of the anti-tamper nut 4 is screwed with the anti-tamper male screw 14 of the joint body 1, and the anti-tamper nut 4 and the joint body 1 are screwed together; secondly, the connecting pipe penetrates through the connecting pipe nut 2; thirdly, the internal thread part 21 of the adapter nut 2 is screwed with the external thread part 11 of the joint body 1, in the screwing process, a spanner is used for clockwise rotating the adapter nut 2, the adapter nut 2 is clockwise screwed, and the anti-misoperation nut 4 is reversely and anticlockwise rotated to a stop until the internal thread part 21 of the adapter nut 2 is screwed and locked with the external thread part 11 of the joint body 1; and (5) finishing assembly. The right thread 21 of the adapter nut is matched with the internal thread 41 of the anti-misoperation nut 4, so that the anti-misoperation function is realized.
During disassembly, the adapter nut 2 is rotated anticlockwise by a wrench, firstly, the anti-misoperation nut 4 rotates clockwise to be loose, and the loosening torque of the anti-loosening nut 4 is smaller than that of the adapter nut 2, so that the adapter nut 2 is static and motionless, namely, the anti-misoperation nut 4 rotates relative to the adapter nut 2; at the moment, the adapter nut 2 is still tightly matched with the external thread part 11 of the adapter body, and only the anti-misoperation nut 4 rotates to play a role in warning and reminding; if the false removal is carried out, stopping; if normal maintenance dismantles, continue to rotate takeover nut 2 until takeover nut 2 internal thread portion 21 and joint body 11 portion separation, realize normal dismantlement.
What has been described above is only a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and variations can be made without departing from the principle of the invention, which is also considered as the scope of protection of the invention.
Claims (3)
1. A device for preventing mistakenly detaching a pipe joint comprises a pipe joint body, a connecting pipe nut and a connecting pipe, wherein an external thread part, a frustum-shaped pressing part and a circular part are arranged on the pipe joint body; the adapter nut is screwed with the external thread of the pipe joint body; the method is characterized in that: an anti-mis-disassembly external thread part is arranged between the external thread part and the circular part of the pipe joint body, and the diameter of the circular part is larger than the thread and the outer diameter of the anti-mis-disassembly external thread part;
the anti-misoperation nut is also included;
the external thread part on the pipe joint body and the internal thread part of the connecting pipe nut are opposite to the thread direction of the internal thread for preventing the external thread part from being dismounted by mistake and preventing the nut from being dismounted by mistake.
2. The mis-disassembly prevention pipe joint device as recited in claim 1, wherein: the threads of the external thread part on the pipe joint body and the internal thread part of the connecting pipe nut are right-handed threads;
the threads of the external thread part for preventing the false detachment and the internal thread of the nut for preventing the false detachment are left-handed threads.
3. The mis-disassembly prevention pipe joint device as claimed in claim 1 or 2, wherein: the thread pitch of the external thread part on the pipe joint body and the internal thread part of the connecting pipe nut is more than 1.1 times of the thread pitch of the internal thread of the anti-misoperation disassembly external thread part and the anti-misoperation nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960267.3U CN210424050U (en) | 2019-06-24 | 2019-06-24 | Device for preventing pipe joint from being disassembled by mistake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960267.3U CN210424050U (en) | 2019-06-24 | 2019-06-24 | Device for preventing pipe joint from being disassembled by mistake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210424050U true CN210424050U (en) | 2020-04-28 |
Family
ID=70376889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920960267.3U Active CN210424050U (en) | 2019-06-24 | 2019-06-24 | Device for preventing pipe joint from being disassembled by mistake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210424050U (en) |
-
2019
- 2019-06-24 CN CN201920960267.3U patent/CN210424050U/en active Active
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