CN210774481U

CN210774481U - Micro differential pressure sensor

Info

Publication number: CN210774481U
Application number: CN201922011896.4U
Authority: CN
Inventors: 张树
Original assignee: Beijing Collihigh Sensor Technology Co ltd
Current assignee: Beijing Collihigh Sensor Technology Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-06-16
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a micro differential pressure sensor, which comprises a product front cover and a product rear shell fixedly connected with the product front cover, wherein the product front cover and the product rear shell form a whole body, a product circuit board, an internal battery, a sensor core body, a sensor air duct and an air duct fixing plate are arranged in the product front cover and the product rear shell, the product circuit board is fixed on the inner wall of the product rear shell, the internal battery is arranged on the left side of the product circuit board, the air duct fixing plate is arranged below the product circuit board and at the bottom of the product rear shell, the sensor air duct is arranged on the air duct fixing plate, the sensor air duct is arranged on the product rear shell through the air duct fixing plate, the sensor core body is arranged at the position of the surface of the product circuit board close to the sensor air duct, the utility model discloses simple structure, it is convenient safe in utilization, can adapt to and install the use in different places, the installation is simple, and easy maintenance ensures safe in utilization.

Description

Micro differential pressure sensor

Technical Field

The utility model relates to a sensor especially relates to a little differential pressure sensor.

Background

Many products in the current trade cause into product air duct owing to connect installation environment, reasons such as mounting means and damage, and the fixed difficulty of installation connects reasons such as power cord, leads to the product to damage unable the restoration, and it is inconvenient to maintain, regularly changes difficult scheduling problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a little differential pressure sensor has solved the problem in the background art, its technical scheme as follows:

the utility model provides a differential pressure sensor, includes the product protecgulum, with product protecgulum fixed connection's product backshell, product protecgulum and product backshell form a whole, and its inside product circuit board, inside battery, sensor core, sensor air duct, air duct fixed plate that is provided with, the product circuit board is fixed on the inner wall of product backshell, product circuit board left side is provided with inside battery, the below of product circuit board and be provided with the air duct fixed plate on the bottom of product backshell, be provided with the sensor air duct on the air duct fixed plate, the sensor air duct passes through the air duct fixed plate and installs on the product backshell, the position that the surface of product circuit board is close to the sensor air duct is provided with the sensor core, the product circuit board with sensor core.

Preferably, the two sides of the product rear shell are provided with mounting lugs, and mounting holes for fixing the product rear shell are formed in the mounting lugs.

Preferably, an opening is formed in the product rear shell below the mounting ear, and a product antenna is arranged at the opening.

Preferably, the product front cover and the product rear shell are fixedly connected, and the contact part of the product front cover and the product rear shell is sealed through a sealing strip.

Preferably, the sensor airway comprises an airway tube and an airway wall, the airway tube is externally provided with the airway wall, and the external shape of the middle part of the airway tube is a hexagonal structure.

Preferably, an O-shaped rubber ring is arranged at the contact part of the shell wall and the product rear shell.

Preferably, the lower part of the rear shell of the product is provided with a rubber hole, and a rubber hole plug is arranged at the rubber hole.

Preferably, the back of the product rear shell is provided with a nut fabrication hole, and the position of the nut fabrication hole is provided with an adsorption fixing magnetic steel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this product makes the sensor air duct obtain strengthening and plays good installation effect and change the product installation through changing product inner structure.

2. The product protecgulum and product backshell are provided with the sealing strip and make the whole sealed effect of product better.

3. The sensor air duct is effectively fixed on the rear shell of the product in a hard plug board mode, the outer shape of the middle part of the air duct is hexagonal, the air duct cannot rotate in the shell wall through the connection with the shell wall, and an O-shaped rubber ring arranged at the contact part of the shell wall and the product shell can play a role in sealing, so that dust, steam and the like are prevented from entering the shell.

4. The use of rubber hole plug can make the product play effectual water-proof effects, and the type that can change the use simultaneously switches wireless and wired product, has made things convenient for the switching of producing different models.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the micro differential pressure sensor;

FIG. 2 is an external structure view and a structural cross-sectional view of the micro differential pressure sensor;

FIG. 3 is a schematic external view of the airway tube;

FIG. 4 is a schematic view of the outer structure of the airway tube;

FIG. 5 is an external schematic view of the micro differential pressure sensor;

FIG. 6 is a rear view of the micro differential pressure sensor;

the parts in the figure are:

1. a front cover screw; 2. a product front cover; 3. a sealing strip; 4. a product rear shell; 5. an internal battery; 6. a sensor gas-guide tube; 7. an airway tube fixing plate; 8. a set screw; 9. an O-shaped rubber ring; 10. a product circuit board; 11. a product antenna; 12. a sensor core; 13. plugging a rubber hole; 14. fixing magnetic steel in an adsorption manner; 15. mounting lugs; 16. mounting holes; 17. an air duct.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1 and 5, a micro differential pressure sensor includes a product front cover 2 and a product rear shell 4 fixedly connected with the product front cover 2, mounting ears 15 are provided at positions protruding from the product rear shell 4 at two sides of the product rear shell 4, mounting holes 16 are provided in the mounting ears 15, the product rear shell 4 can be fixed through the mounting holes 16, an opening is provided at a position, close to the lower side of the mounting ears 15, on the right side of the product rear shell 4, and a product antenna 11 is fixedly mounted at the opening.

As shown in fig. 1, the product front cover 2 and the product rear shell 4 are fastened by a front cover screw 1, the two form a whole, a sealing groove is arranged on the end surface of the product front cover 2, a sealing strip 3 is arranged in the sealing groove, the sealing strip 3 is arranged around the end surface of the product front cover 2, and is tightly pressed on the bonding surface of the product front cover 2 and the product rear shell 4 by screwing the front cover screw 1 and a corresponding threaded hole in the product rear shell 4, and the sealing strip 3 is used for integrally sealing the product front cover 2 and the product rear shell 4.

As shown in fig. 1, a product circuit board 10, an internal battery 5, a sensor core 12, a sensor air duct 6 and an air duct fixing plate 7 are arranged inside the whole formed by the product front cover 2 and the product rear shell 4, the product circuit board 10 is fixedly installed on the inner wall of the product rear shell 4 through a fixing screw 8, the internal battery 5 is arranged on the left side of the product circuit board 10, and the air duct fixing plate is arranged below the product circuit board and at the bottom of the product rear shell.

As shown in fig. 1 and 2, 2 sensor air ducts 6 are arranged above the air duct fixing plate 7 in parallel, the sensor air ducts 6 and the air duct fixing plate 7 are fixed in an insertion manner, and the structure has the advantage that the sensor air ducts are effectively fixed on the product rear shell 4 in a hard insertion plate manner; as shown in fig. 3 and 4, the sensor airway 6 comprises an airway 17 and a housing wall, the outer shape of the middle part of the airway 17 is a hexagonal structure, the housing wall is mounted outside the airway 17, the structure has the advantage that relative rotation cannot occur between the airway 17 and the housing wall, the housing wall is fixedly mounted on the product rear shell 4 through an airway fixing plate 7, an O-shaped rubber ring 9 is arranged at the contact part of the housing wall and the product rear shell 4, and the O-shaped rubber ring 9 plays a role in sealing to prevent dust, steam and the like from entering the product.

The upper side of the 2 sensor air ducts 6 is provided with a sensor core body 12 at the lower side of the surface of the product circuit board 10, one end of the sensor core body 12 is connected with the product circuit board 10, and the other end of the sensor core body is connected with the two sensor air ducts 6 through air pipes.

As shown in figure 1, the right side of the air duct fixing plate 7 is provided with a rubber hole on the product shell rear shell 4, the rubber hole is provided with a rubber hole plug 13, the use of the rubber hole plug 13 can enable the product to play an effective waterproof effect, meanwhile, the type of use can be changed to switch between wireless and wired products, and the switching of different production models is facilitated.

As shown in fig. 6, the back terminal surface bilateral symmetry of product backshell 4 is provided with the nut fabrication hole, nut fabrication hole position adhesive fixation has the fixed magnet steel 14 of absorption, just the terminal surface of adsorbing fixed magnet steel 14 with the terminal surface of product backshell 4 flushes, and the benefit of adopting this kind of structure is that the fixed magnet steel 14 of absorption of pasting on the nut fabrication hole of product back can the snap-on the cabinet body of iron.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A micro differential pressure sensor, characterized by: including the product protecgulum, with product protecgulum fixed connection's product backshell, product protecgulum and product backshell form a whole, and its inside product circuit board, inside battery, sensor core, sensor air duct, air duct fixed plate that is provided with, the product circuit board is fixed on the inner wall of product backshell, product circuit board left side is provided with inside battery, the below of product circuit board and be provided with the air duct fixed plate on the bottom of product backshell, be provided with the sensor air duct on the air duct fixed plate, the sensor air duct passes through the air duct fixed plate and installs on the product backshell, the position that the surface of product circuit board is close to the sensor air duct is provided with the sensor core, the product circuit board with sensor core electricity is connected.

2. The micro differential pressure sensor according to claim 1, wherein: the two sides of the product rear shell are provided with mounting lugs, and mounting holes for fixing the product rear shell are formed in the mounting lugs.

3. The micro differential pressure sensor according to claim 2, wherein: the lower part of the mounting lug is provided with an opening on the product rear shell, and a product antenna is arranged at the opening.

4. The micro differential pressure sensor according to claim 1, wherein: the product protecgulum and product backshell fixed connection, both contact site seal through the sealing strip.

5. The micro differential pressure sensor according to claim 1, wherein: the sensor air duct comprises an air duct and a housing wall, the housing wall is installed outside the air duct, and the outer shape of the middle part of the air duct is a hexagonal structure.

6. The micro differential pressure sensor according to claim 5, wherein: and an O-shaped rubber ring is arranged at the contact part of the shell wall and the product rear shell.

7. The micro differential pressure sensor according to claim 1, wherein: the lower part of the product rear shell is provided with a rubber hole, and a rubber hole plug is arranged at the rubber hole.

8. The micro differential pressure sensor according to claim 1, wherein: the back of the product rear shell is provided with a nut fabrication hole, and the position of the nut fabrication hole is provided with an adsorption fixing magnetic steel.