CN211579036U - Waterproof TNC joint on GPS measuring instrument - Google Patents
Waterproof TNC joint on GPS measuring instrument Download PDFInfo
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- CN211579036U CN211579036U CN202020601153.2U CN202020601153U CN211579036U CN 211579036 U CN211579036 U CN 211579036U CN 202020601153 U CN202020601153 U CN 202020601153U CN 211579036 U CN211579036 U CN 211579036U
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- cylinder body
- measuring instrument
- tnc
- insulating sleeve
- waterproof
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Abstract
The utility model discloses a waterproof TNC on GPS measuring apparatu connects, including casing and core, the casing includes: the measuring instrument comprises a cylinder body with an external screw buckle, a positioning disk and an antenna plug-in pipe, wherein the core body is arranged in an inner hole of the cylinder body, the cylinder body and the antenna plug-in pipe are distributed on two sides of the positioning disk, the positioning disk and a measuring instrument box body are clamped, sealed and fixed by a shell through a nut screwed in the cylinder body, and the antenna plug-in pipe penetrates through a center hole of the positioning disk and is communicated with the inner hole of the cylinder body; a first waterproof rubber ring is arranged at the joint of the outer ring of the cylinder and the positioning disc; an insulating sleeve is arranged between the inner hole wall of the cylinder body and the core body, a second waterproof rubber ring is arranged between the front end of the insulating sleeve and the positioning disc, and a signal correction ring is arranged between the rear end of the insulating sleeve and the cylinder body. The problem of TNC connects inside the leaking has been solved to waterproof rubber ring of second. The signal correction ring additionally arranged meets the TNC joint signal transmission requirement, and the signal receiving efficiency is improved.
Description
Technical Field
The utility model relates to a waterproof TNC on GPS measuring apparatu connects.
Background
The TNC joint is a bridge for communicating information inside and outside the GPS measuring instrument and is arranged on a mounting hole of a shell of the GPS measuring instrument. The TNC connects front end and outside receiving and dispatching antenna connection, and TNC connects the rear end and is connected with the inside radio frequency cable of GPS measuring apparatu. The outer shell of the TNC connector is a first connecting channel, the core body of the TNC connector is a second connecting channel, an even insulating layer is arranged between the outer shell and the core body, and the GPS measuring instrument has a waterproof requirement, so that the GPS measuring instrument can be used outdoors in rainy days. A waterproof TNC joint with the patent number of CN 209658491U is additionally provided with a waterproof rubber ring between the TNC joint and a mounting hole of a GPS measuring instrument shell. The TNC connector only meets the external waterproof requirement of the connector, and when a GPS measuring instrument works in the field in rainy days, rainwater can enter an insulator inside the TNC connector along an antenna insertion tube of the TNC connector, so that the TNC connector cannot work.
Disclosure of Invention
The utility model provides a waterproof TNC on GPS measuring apparatu connects, both solved the inside problem of intaking of TNC joint, satisfied TNC again and connected the signal transmission requirement, improved the receiving efficiency of signal.
In order to achieve the above object, the present invention provides a technical solution:
a water resistant TNC connector on a GPS measurement instrument, the TNC connector comprising: a housing and a core, the housing comprising: the measuring instrument comprises a cylinder body with an external screw buckle, a positioning disk and an antenna plug-in pipe, wherein the core body is arranged in an inner hole of the cylinder body, the cylinder body and the antenna plug-in pipe are distributed on two sides of the positioning disk, the positioning disk and a measuring instrument box body are clamped, sealed and fixed by a shell through a nut screwed in the cylinder body, and the antenna plug-in pipe penetrates through a center hole of the positioning disk and is communicated with the inner hole of the cylinder body; a first waterproof rubber ring is arranged at the joint of the outer ring of the cylinder and the positioning disc and is used for sealing with a box body of the measuring instrument; an insulating sleeve is arranged between the inner hole wall of the cylinder body and the core body, the core body is a section of cylindrical conductor with front and rear bayonets, the front bayonet is connected with an external receiving and transmitting antenna, the rear bayonet is connected with a radio frequency cable inside the GPS measuring instrument, a second waterproof rubber ring is arranged between the front end of the insulating sleeve and the positioning disc, and a signal correction ring is arranged between the rear end of the insulating sleeve and the cylinder body.
The scheme is further that the insulating sleeve is a polytetrafluoroethylene plastic sleeve, and the signal correction ring is made of a copper material.
The scheme is further that the core body is fixedly connected with the insulating sleeve through pouring sealant.
The utility model discloses make TNC connect the level to reach IP 67's waterproof grade after installing the waterproof rubber ring of second additional, solved the inside problem of leaking of TNC joint. The added copper signal correction ring reduces the standing-wave ratio to below 1.2 @3GHz, meets the TNC joint signal transmission requirement and improves the signal receiving efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
A waterproof TNC connector on a GPS measurement instrument, as shown in fig. 1, the TNC connector includes: a housing and a core 3, the housing comprising: the antenna comprises a cylinder body 1 with an external screw buckle, a positioning disk 7 and an antenna plug-in pipe 8, wherein a core body 3 is arranged in an inner hole of the cylinder body 1. The cylinder body 1, the positioning disc 7 and the antenna plug-in pipe 8 are of an integrated structure, the cylinder body 1 and the antenna plug-in pipe 8 are distributed on two sides of the positioning disc 7, the positioning disc 7 and the measuring instrument box body 10 are clamped, sealed and fixed by the shell through a nut 9 screwed in the cylinder body 1, and the antenna plug-in pipe 8 penetrates through a center hole of the positioning disc 7 and is communicated with an inner hole of the cylinder body 1; a first waterproof rubber ring 5 is arranged at the joint of the outer ring of the cylinder 1 and the positioning disc 7 and is used for sealing with a box body of the measuring instrument; an insulating sleeve 4 for supporting the core 3 is arranged between the inner hole wall of the barrel 1 and the core 3, the insulating sleeve is a polytetrafluoroethylene engineering plastic sleeve, the core 3 is arranged in the insulating sleeve 4, the core 3 is a cylindrical conductor with a front bayonet and a rear bayonet, the front bayonet 301 is used for being connected with a receiving and transmitting antenna inserted from the outside, the rear bayonet 302 is used for being connected with a radio frequency cable inside the GPS measuring instrument, and the core 3 is fixedly connected with the insulating sleeve 4 through sealant filled in the insulating sleeve. In order to solve the problem of internal leakage of the TNC in the long-term puzzlement industry, a second waterproof rubber ring 6 is arranged between the front end of the insulating sleeve 4 and the positioning disc 7, and the TNC connector grade reaches the waterproof grade of IP67 after the second waterproof rubber ring 6 is additionally arranged. However, the addition of the waterproof rubber ring changes the shape of the insulator of the insulating sleeve 4, so that the standing wave ratio VSWR of the connector is increased, and the receiving efficiency of the connector on radio frequency models is influenced. Therefore, a copper signal correction ring 2 is arranged between the rear end of the insulating sleeve 4 and the cylinder 1, and the standing-wave ratio can be reduced to below 1.2 @3GHz after the copper signal correction ring 2 is added. The TNC connector signal transmission requirement is met, and the signal receiving efficiency is improved; the TNC connects the mode that adopts with coaxial cable's equipment mode that crimping cable terminal was pegged graft with the joint earlier, and what assurance cable that can be better switches on well reduces the decay of signal in transmission process. After the second waterproof rubber ring is additionally arranged, the grade of the TNC joint reaches the waterproof grade of IP67, and the problem of water leakage inside the TNC joint is solved. The added copper signal correction ring reduces the standing-wave ratio to below 1.2 @3GHz, meets the TNC joint signal transmission requirement and improves the signal receiving efficiency.
Claims (3)
1. A water resistant TNC connector on a GPS measurement instrument, the TNC connector comprising: a housing and a core, the housing comprising: the measuring instrument comprises a cylinder body with an external screw buckle, a positioning disk and an antenna plug-in pipe, wherein the core body is arranged in an inner hole of the cylinder body, the cylinder body and the antenna plug-in pipe are distributed on two sides of the positioning disk, the positioning disk and a measuring instrument box body are clamped, sealed and fixed by a shell through a nut screwed in the cylinder body, and the antenna plug-in pipe penetrates through a center hole of the positioning disk and is communicated with the inner hole of the cylinder body; a first waterproof rubber ring is arranged at the joint of the outer ring of the cylinder and the positioning disc and is used for sealing with a box body of the measuring instrument; the GPS measuring instrument is characterized in that a second waterproof rubber ring is arranged between the front end of the insulating sleeve and the positioning disc, and a signal correction ring is arranged between the rear end of the insulating sleeve and the barrel.
2. The waterproof TNC connector for a GPS measurement instrument of claim 1, wherein the insulating sleeve is a PTFE sleeve and the signal correction ring is a copper material.
3. The waterproof TNC connector for the GPS measuring instrument as recited in claim 1, wherein the core and the insulating sleeve are fixedly connected by potting adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020601153.2U CN211579036U (en) | 2020-04-21 | 2020-04-21 | Waterproof TNC joint on GPS measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020601153.2U CN211579036U (en) | 2020-04-21 | 2020-04-21 | Waterproof TNC joint on GPS measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211579036U true CN211579036U (en) | 2020-09-25 |
Family
ID=72527588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020601153.2U Active CN211579036U (en) | 2020-04-21 | 2020-04-21 | Waterproof TNC joint on GPS measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211579036U (en) |
-
2020
- 2020-04-21 CN CN202020601153.2U patent/CN211579036U/en active Active
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