CN211824867U - Digital display pressure transmitter - Google Patents
Digital display pressure transmitter Download PDFInfo
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- CN211824867U CN211824867U CN202020823584.3U CN202020823584U CN211824867U CN 211824867 U CN211824867 U CN 211824867U CN 202020823584 U CN202020823584 U CN 202020823584U CN 211824867 U CN211824867 U CN 211824867U
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Abstract
The utility model provides a digital display pressure transmitter, which comprises a shell, a pressure sensing element, an electric connector, a lower circuit board, an upper circuit board, a nixie tube, a mask and a flexible circuit board, wherein the lower circuit board, the upper circuit board, the nixie tube, the mask and the flexible circuit board are arranged in the shell; the main structure pressure sensing element, the base and the surface cover are assembled by laser welding, the positions of the mask and the electric connector which are easy to leak are filled with pouring sealant to improve the sealing performance, the whole process is simple, the time and labor are saved in assembly, the cost is saved, the reliability is also ensured, the environment tests of electric and electronic products such as sinking, salt water spraying, high and low temperature and the like are carried out after the complete machine is manufactured, the air tightness protection level of the product can reach IP67, and the product can be used for a long time in severe environment.
Description
Technical Field
The utility model belongs to the pressure transmitter field especially relates to a pressure transmitter's assembly structure with digital display.
Background
Pressure is an important parameter in industrial production, if the pressure is not satisfactory, production efficiency is influenced slightly, and safety accidents are caused seriously, and measurement and control are required. The pressure instrument can monitor and visually display pressure change in a production link, and has no substitution in the aspects of ensuring personal and property safety, avoiding environmental disasters and the like, so that the pressure measurement instrument is widely applied to various fields, and is more popular among users due to products with accurate reading, safety, reliability and excellent performance.
The existing pressure transmitters are various in types, but the structure is complicated, the cost is high, even a product cannot work in a severe environment due to low air tightness protection level, and the service life of the product is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an assembly structure is simple, low cost, airtight protection level is high digital display pressure transmitter specifically is:
the digital display pressure transmitter comprises a shell, a pressure sensing element, an electric connector, a lower circuit board, an upper circuit board, a nixie tube, a mask and a flexible circuit board, wherein the lower circuit board, the upper circuit board, the nixie tube, the mask and the flexible circuit board are arranged in the shell;
the shell is formed by hermetically connecting a meter cover and a base, wherein the upper part and the lower part of the meter cover are provided with accommodating grooves;
the center of the bottom of the base is provided with a through hole at the bottom of the base, the upper part of the pressure sensing element with the pin extends into the groove of the base from the through hole at the bottom of the base, and the outer side wall of the pressure sensing element is fixedly connected with the wall of the mounting through hole in a sealing way;
the lower circuit board is electrically connected and welded on the pins of the pressure sensing element;
the upper circuit board and the lower circuit board are electrically connected and welded through two rows of first rows of pins which are vertically arranged in parallel to realize interconnection and fixation, and the upper circuit board is supported and positioned above the lower circuit board;
the nixie tube is electrically connected and fixed on the upper circuit board;
the facial mask is provided with a square groove matched with the nixie tube, and the facial mask is sleeved at the upper end of the nixie tube through the square groove;
the upper part of the surface cover is provided with a positioning groove, and the mask is arranged in the positioning groove of the surface cover and is bonded and fixed through an adhesive;
the groove wall of the base is provided with a groove wall through hole, and the electric connector passes through the groove wall through hole and is fixedly connected with the groove wall through hole in a sealing way; one end of the flexible circuit board is electrically connected and welded with the contact pin positioned in the shell through the electric connector, and the other end of the flexible circuit board is electrically connected and welded with the upper circuit board through the second row of pins.
Furthermore, the meter cover and the base are fixedly connected by laser welding.
Further, the outer side wall of the pressure sensing element is fixedly connected with the wall of the mounting through hole in a sealing mode through laser welding.
Furthermore, the lower circuit board and the upper circuit board are horizontally arranged in parallel from bottom to top.
Furthermore, the electric connector comprises a cushion block, the front side face of the cushion block is matched and attached with the inner wall face of the groove wall of the base, the rear side face of the cushion block is provided with a limiting groove matched with the hexagonal part of the electric connector in a clamping mode so as to prevent the electric connector from rotating, the cushion block is provided with cushion block through holes penetrating through the front side face and the rear side face, the electric connector penetrates through the cushion block through holes and the groove wall through holes outwards in the groove of the base accommodating groove in sequence, the hexagonal part of the electric connector is embedded into the cushion block limiting groove, and a locking nut is screwed on the electric connector outside the base.
Furthermore, the outer side of the groove wall of the base, which is positioned beside the through hole of the groove wall, is provided with a plane part which is matched and abutted with the end surface of the locking nut.
Further, pouring sealant between the face film and the surface cover for sealing.
Further, pouring sealant between the electric connector and the base for sealing.
The utility model has the advantages that: the assembling structure is simple, the cost is low, the main structural components are assembled by laser welding, the assembling process is simple and time-saving, the pouring and sealing glue treatment is carried out at the position where the leakage is easy to occur, the air tightness protection grade is improved, and the service life of the product is prolonged.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a digital display pressure transmitter assembly view;
FIG. 2 is an exploded view of the digitally displayed pressure transmitter;
FIG. 3 is a schematic top view of a digital display pressure transmitter base-electrical connector connection;
FIG. 4 is a perspective view of the digitally displayed pressure transmitter;
in the figure, 1, a pressure-sensitive element; 2. a base; 3. a lower circuit board; 4. a first row of needles; 5. an upper circuit board; 6. a watch cover; 7. facial mask; 8. a nixie tube; 9. pouring a sealant; 10. a second row of needles; 11. a flexible circuit board; 12. an electrical connector; 13. locking the nut; 14. and a cushion block.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In addition, the digital display pressure transmitter converts the pressure of the measuring medium into an electric signal, further converts the electric signal into digital quantity, transmits the digital quantity through a bus and displays the digital quantity on a nixie tube. Corresponding circuit mechanism is not the protection content of the present invention, and the related circuit structure is also existing in the prior art, and is not described herein again.
The invention is intended to protect a corresponding assembly structure, which will be described in detail below with reference to the accompanying drawings and embodiments:
as shown in the figure, the digital display pressure transmitter of the present invention comprises a housing, a pressure sensing element 1, an electric connector 12, and a lower circuit board 3, an upper circuit board 5, a nixie tube 8, a mask 7, and a flexible circuit board 11 arranged in the housing;
the shell is formed by hermetically connecting a meter cover 6 and a base 2, wherein the meter cover 6 and the base 2 are provided with accommodating grooves, and preferably, the meter cover 6 and the base 2 are assembled by laser welding;
the center of the bottom of the base 2 is provided with a through hole 21 of the bottom of the base, the upper part of the pressure sensing element 1 with pins extends into the groove of the base 2 from the through hole of the bottom of the base, the outer side wall of the pressure sensing element 1 is fixedly connected with the wall of the mounting through hole in a sealing way, and preferably, the outer side wall of the pressure sensing element 1 is fixedly connected with the wall of the mounting through hole in a sealing way by laser welding;
the lower circuit board 3 and the upper circuit board 5 are horizontally arranged in parallel from bottom to top;
the lower circuit board 3 is electrically connected, welded and fixed on the pins of the pressure sensing element 1;
the upper circuit board 5 and the lower circuit board 3 are electrically connected and welded through two rows of first rows of pins 4 which are vertically arranged in parallel to realize interconnection and fixation, and the upper circuit board 5 is supported and positioned above the lower circuit board 3;
the nixie tube 8 is electrically connected and fixed on the upper circuit board 5;
the facial mask 7 is provided with a square groove 71 matched with the nixie tube 8, and the facial mask 7 is sleeved at the upper end of the nixie tube 8 through the square groove so as to form anti-rotation positioning;
the upper part of the surface cover 6 is provided with a positioning groove, and the surface film 7 is arranged in the positioning groove of the surface cover 6 and is bonded and fixed through an adhesive;
the groove wall of the base 2 is provided with a groove wall through hole 22, and the electric connector 12 passes through the groove wall through hole 22 and is fixedly connected with the groove wall through hole in a sealing way; one end of the flexible circuit board 11 is electrically connected and welded with a pin in the shell of the electric connector 12, and the other end of the flexible circuit board is electrically connected and welded with the upper circuit board 5 through the second pin bank 10;
further, still include a cushion 14, its leading flank matches the laminating with base 2 cell wall internal face, the trailing flank has and matches the screens with the hexagonal of electric connector 12 mutually in order to prevent electric connector 12 pivoted spacing groove, the cushion 14 has been seted up and has been link up preceding, the cushion through-hole of trailing flank, electric connector 12 passes cushion through-hole and cell wall through-hole 22 outwards in proper order by base holding tank inslot, electric connector 12's hexagonal embedding cushion spacing inslot, a lock nut 13 spiro union is on being located the electric connector 12 outside the base and forms the clamp with the laminating of base 2 cell wall and fix.
Furthermore, a plane part 221 matched with the end surface of the locking nut 13 is formed on the outer side of the groove wall of the base 2 beside the groove wall through hole, so as to better realize clamping and fixing;
further, as shown in fig. 1, an adhesive 9 is injected between the face film 7 and the cover 6, and between the electrical connector 12 and the base 2 for sealing.
The utility model discloses a main structure spare pressure sensing element 1, base 2, all adopt the laser welding equipment between the table lid 6, facial mask 7 and electric connector 12 two easily leak the equal pouring sealant in position and handle and improve sealing performance, whole simple process, assembly labour saving and time saving, the reliability has also been guaranteed to the cost of having practiced thrift, after the complete machine preparation is accomplished, the electrician electronic product environmental test such as heavy water, salt solution spraying, high and low temperature has been carried out, product gas tightness protection level can reach IP67, can use for a long time in adverse circumstances.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The digital display pressure transmitter is characterized by comprising a shell, a pressure sensing element, an electric connector, a lower circuit board, an upper circuit board, a nixie tube, a mask and a flexible circuit board, wherein the lower circuit board, the upper circuit board, the nixie tube, the mask and the flexible circuit board are arranged in the shell;
the shell is formed by hermetically connecting a meter cover and a base, wherein the upper part and the lower part of the meter cover are provided with accommodating grooves;
the center of the bottom of the base is provided with a through hole at the bottom of the base, the upper part of the pressure sensing element with the pin extends into the groove of the base from the through hole at the bottom of the base, and the outer side wall of the pressure sensing element is fixedly connected with the wall of the mounting through hole in a sealing way;
the lower circuit board is electrically connected and welded on the pins of the pressure sensing element;
the upper circuit board and the lower circuit board are electrically connected and welded through two rows of first rows of pins which are vertically arranged in parallel to realize interconnection and fixation, and the upper circuit board is supported and positioned above the lower circuit board;
the nixie tube is electrically connected and fixed on the upper circuit board;
the facial mask is provided with a square groove matched with the nixie tube, and the facial mask is sleeved at the upper end of the nixie tube through the square groove;
the upper part of the surface cover is provided with a positioning groove, and the mask is arranged in the positioning groove of the surface cover and is bonded and fixed through an adhesive;
the groove wall of the base is provided with a groove wall through hole, and the electric connector passes through the groove wall through hole and is fixedly connected with the groove wall through hole in a sealing way; one end of the flexible circuit board is electrically connected and welded with the contact pin positioned in the shell through the electric connector, and the other end of the flexible circuit board is electrically connected and welded with the upper circuit board through the second row of pins.
2. The digital display pressure transmitter of claim 1 wherein the cover and base are secured by laser welding.
3. The digital display pressure transmitter of claim 1, wherein the outer sidewall of the pressure sensing element is hermetically fixed to the wall of the mounting through hole by laser welding.
4. The digital display pressure transmitter of claim 1 wherein the lower circuit board and the upper circuit board are horizontally arranged in parallel from bottom to top.
5. The digital display pressure transmitter of claim 1, further comprising a spacer, wherein the front side surface of the spacer is matched and attached to the inner wall surface of the base slot wall, the rear side surface of the spacer is provided with a limiting groove matched and locked with the hexagonal part of the electrical connector to prevent the electrical connector from rotating, the spacer is provided with a spacer through hole penetrating through the front side surface and the rear side surface, the electrical connector sequentially penetrates through the spacer through hole and the slot wall through hole from the inside to the outside of the base receiving groove, the hexagonal part of the electrical connector is embedded into the spacer limiting groove, and a locking nut is screwed on the electrical connector outside the base and attached to the base slot wall to form clamping fixation.
6. The digital display pressure transmitter of claim 1, wherein the outer side of the base slot wall near the slot wall through hole is formed with a plane part which is matched and abutted with the end surface of the lock nut.
7. The digital display pressure transmitter of claim 1, wherein an adhesive is injected between the face mask and the cover to seal.
8. The digital display pressure transmitter of claim 1 wherein an adhesive seal is injected between the electrical connector and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020823584.3U CN211824867U (en) | 2020-05-18 | 2020-05-18 | Digital display pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020823584.3U CN211824867U (en) | 2020-05-18 | 2020-05-18 | Digital display pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211824867U true CN211824867U (en) | 2020-10-30 |
Family
ID=73021639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020823584.3U Active CN211824867U (en) | 2020-05-18 | 2020-05-18 | Digital display pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211824867U (en) |
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2020
- 2020-05-18 CN CN202020823584.3U patent/CN211824867U/en active Active
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