CN212180160U

CN212180160U - High-precision ceramic chip pressure sensor

Info

Publication number: CN212180160U
Application number: CN202020427640.1U
Authority: CN
Inventors: 赖冬云; 赵春银
Original assignee: Wenzhou Yuanda Electronic Technology Co ltd
Current assignee: Wenzhou Yuanda Electronic Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-12-18
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a high accuracy ceramic chip pressure sensor. The technical key points are as follows: the collecting head, a housing, ceramic chip, casing cavity sets up, ceramic chip sets up in collecting head and casing, the collecting head is including gathering pole and plate washer, be equipped with axially extended's collection hole on the collection pole, gather the external and ceramic chip of hole intercommunication, ceramic chip is equipped with the collection groove towards collecting head one side, the collecting head is equipped with the guide bar on casing one side, the guide bar corresponds with collection trench position, gather hole axial extension and pierce through the guide bar, the guide bar can inlay and gather the inslot, be equipped with annular holding tank on the guide bar, be equipped with the sealing washer on the holding tank, the utility model discloses the precision is high during measurement, and the reaction is fast to medium leakage probability is low, and is more stable.

Description

High-precision ceramic chip pressure sensor

Technical Field

The utility model relates to a pressure sensor field, more specifically the utility model relates to a high accuracy ceramic chip pressure sensor that says so.

Background

The ceramic chip of the existing ceramic chip pressure sensor is wrapped by the collecting head, the rear side of the existing ceramic chip pressure sensor is connected with the collecting head through the shell, the ceramic chip is sealed by one side of the collecting head, the process is complex, when pressure measurement is carried out, a medium fills a gap between the collecting head and the ceramic chip firstly, an accurate numerical value can be measured, the reaction is slow, and the precision is low.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a high accuracy ceramic chip pressure sensor that the precision is high, and the reaction is fast.

In order to achieve the above purpose, the utility model provides a following technical scheme: a high-precision ceramic chip pressure sensor comprises: the collecting head comprises a collecting head body, a shell body and a ceramic chip, wherein the shell body is hollow, the ceramic chip is arranged in the collecting head body and the shell body, the collecting head body comprises a collecting rod and a baffle plate, an axially extending collecting hole is formed in the collecting rod, the collecting hole is communicated with the outside and the ceramic chip, the ceramic chip is provided with a collecting groove towards one side of the collecting head body, a guiding rod is arranged on one side of the collecting head body, the guiding rod corresponds to the collecting groove in position, the axially extending collecting hole penetrates through the guiding rod, the guiding rod can be embedded into the collecting groove, an annular accommodating groove is formed in the guiding rod, and a sealing ring is arranged on the accommodating groove.

As a further improvement of the present invention, the baffle is provided with a positioning ring towards one side of the collecting rod, and the diameter of the positioning ring is greater than the inner diameter of the housing.

As a further improvement, one side of the shell inner wall, which is far away from the collecting head, is provided with a touch ring, and the diameter of the touch ring is smaller than that of the ceramic chip.

As a further improvement of the utility model, the collection rod is coaxial with the guide rod.

As a further improvement, the collecting rod is provided with an annular groove, and the annular groove is sleeved with a rubber ring.

As a further improvement, the collecting rod is provided with threads.

The beneficial effects of the utility model, adorn pressure sensor in needs measuring position, later medium flows in from gathering the hole inwards, later medium gets into gathers the inslot, by ceramic chip measurement pressure, the medium is measured from gathering the hole direct flow to gathering the inslot, need not to fill the clearance between gathering head and the ceramic chip, direct measurement precision is high, the reaction is fast, the guide bar stretches into gathers the inslot, the sealing washer on the holding tank is sealed, need not to reseal ceramic chip and gathering head, reduce the process, and efficiency is improved, and need sealed position little, reduce medium seepage probability, it is more stable in the messenger pressure sensor use.

Drawings

Fig. 1 is a schematic view of the overall structure of a cut-off surface of the present invention;

FIG. 2 is a perspective view of the acquisition rod with an annular groove and a rubber ring;

fig. 3 is a perspective view of the acquisition rod when a thread is formed thereon.

Description of the labeling: 1. a pick head; 11. a collection rod; 111. a collection well; 112. an annular groove; 113. a rubber ring; 12. a baffle plate; 121. a positioning ring; 13. a guide rod; 131. accommodating grooves; 132. a seal ring; 2. a housing; 21. a contact ring; 3. a ceramic chip; 31. and (4) collecting the tank.

Detailed Description

The present invention will be described in further detail with reference to embodiments shown in the drawings.

Referring to fig. 1 to 3, a high-precision ceramic chip pressure sensor of the present embodiment includes: first 1, casing 2, ceramic chip 3 gather, 2 cavity settings of casing, ceramic chip 3 sets up in first 1 and casing 2 gather, first 1 is including gathering pole 11 and plate washer 12, gather and be equipped with axial extension's collection hole 111 on the pole 11, gather the external and ceramic chip 3 of hole 111 intercommunication, ceramic chip 3 is equipped with towards first 1 one side of gathering and gathers groove 31, it is equipped with guide bar 13 on first 1 towards casing 2 one side to gather, guide bar 13 corresponds with gathering groove 31 position, gather hole 111 axial extension and pierce through guide bar 13, guide bar 13 can inlay and gather in the groove 31, be equipped with annular holding tank 131 on the guide bar 13, be equipped with sealing washer 132 on the holding tank 131.

Through the technical scheme, with pressure sensor dress in the position that needs the measurement, later medium flows in from gathering hole 111 inwards, later medium gets into and gathers in the groove 31, measure pressure by ceramic chip 3, the medium directly flows to gathering the groove 31 from gathering hole 111 and measures, need not to fill up the clearance between collection head 1 and the ceramic chip 3, direct measurement precision is high, the reaction is fast, guide rod 13 stretches into and gathers in the groove 31, sealing washer 132 on the holding tank 131 is sealed, need not to reseal ceramic chip 3 and collection head 1 again, reduce the process, and the efficiency is improved, and need sealed position little, reduce medium seepage probability, it is more stable in the messenger pressure sensor use. The ceramic chip 3 of having avoided current 3 pressure sensor of ceramic chip is wrapped up by the collection head 1, and the rear side is connected with collection head 1 by casing 2, leans on collection head 1 one side with ceramic chip 3 to seal, and when carrying out pressure measurement, the clearance between collection head 1 and the ceramic chip 3 is filled earlier to the medium, just can measure accurate numerical value, and the reaction is slow, the condition that the precision is low.

In a modified embodiment, the baffle 12 is provided with a positioning ring 121 on the side facing the collecting rod 11, and the diameter of the positioning ring 121 is larger than the inner diameter of the housing 2.

Through the technical scheme, during installation, the ceramic chip 3 is installed in the shell 2, then the guide rod 13 is aligned to the collecting groove 31, the collecting head 1 is pressed on the shell 2 until the positioning ring 121 is abutted to the edge of the shell 2, and then the connecting part is welded to complete installation. Holding ring 121 is inconsistent with casing 2, avoids guide rod 13 excessively to stretch into, damages ceramic chip 3, reduces the precision, the condition of life-span. The diameter of the preferred spacing ring is equal to the outer diameter of the shell 2, and the edge of the positioning ring 121 and the outer side of the shell 2 are in the same arc surface after installation, so that the use is more convenient.

As a modified specific embodiment, the side of the inner wall of the shell 2 far away from the collecting head 1 is provided with an abutting ring 21, and the diameter of the abutting ring 21 is smaller than that of the ceramic chip 3.

Through above-mentioned technical scheme, during the installation pressure sensor, when putting ceramic chip 3 in casing 2, one side and the ring 21 of keeping in touch of ceramic chip 3 inconsistent, the installation back, 3 opposite sides of ceramic chip and the plate washer 12 inconsistent, ceramic chip 3 is restricted between the two, and 3 stable in position of installation back ceramic chip makes pressure sensor stability in the use high, long service life.

As a modified embodiment, the collection rod 11 is coaxial with the guide rod 13.

Through above-mentioned technical scheme, gather pole 11 and guide bar 13 coaxial, conveniently process and gather head 1 integral processing.

As a modified specific embodiment, the collecting rod 11 is provided with an annular groove 112, and the annular groove 112 is sleeved with a rubber ring 113.

Through above-mentioned technical scheme, will gather pole 11 through pressing and aim at the position that needs the measurement with its installation, rubber ring 113 seals, easy installation, convenient to use.

In a modified embodiment, the collecting rod 11 is provided with threads.

Through above-mentioned technical scheme, utilize the screw thread rotation to install in the position that needs the measurement, it is high to connect back stability to install convenient to use easily.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A high-precision ceramic chip pressure sensor comprises: gathering head (1), casing (2), ceramic chip (3), casing (2) cavity sets up, ceramic chip (3) set up in gathering head (1) and casing (2), gathering head (1) is including gathering pole (11) and plate washer (12), be equipped with axially extended collection hole (111) on gathering pole (11), it communicates external and ceramic chip (3) to gather hole (111), its characterized in that: ceramic chip (3) are equipped with collection groove (31) towards collection head (1) one side, collection head (1) is equipped with guide rod (13) towards casing (2) one side, guide rod (13) correspond with collection groove (31) position, gather hole (111) axial extension and pierce through guide rod (13), guide rod (13) can inlay in collection groove (31), be equipped with annular holding tank (131) on guide rod (13), be equipped with sealing washer (132) on holding tank (131).

2. The high accuracy ceramic chip pressure sensor of claim 1, wherein: one side of the baffle plate (12) facing the collecting rod (11) is provided with a positioning ring (121), and the diameter of the positioning ring (121) is larger than the inner diameter of the shell (2).

3. The high accuracy ceramic chip pressure sensor of claim 2, wherein: one side of the inner wall of the shell (2) far away from the collecting head (1) is provided with a contact ring (21), and the diameter of the contact ring (21) is smaller than that of the ceramic chip (3).

4. The high accuracy ceramic chip pressure sensor of claim 3, wherein: the acquisition rod (11) is coaxial with the guide rod (13).

5. The high accuracy ceramic chip pressure sensor of claim 4, wherein: an annular groove (112) is formed in the acquisition rod (11), and a rubber ring (113) is sleeved on the annular groove (112).

6. The high accuracy ceramic chip pressure sensor of claim 4, wherein: the acquisition rod (11) is provided with threads.