CN210346971U

CN210346971U - Novel pressure sensor

Info

Publication number: CN210346971U
Application number: CN201921226121.2U
Authority: CN
Inventors: 罗龙珍; 罗龙虎; 金香花
Original assignee: Tianjin Luofu Technology Co ltd
Current assignee: Tianjin Luofu Technology Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-17
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a novel pressure sensor, including casing, buffer gear, protective cover and silicon diaphragm, the even coating in the outside of casing has the paint layer, the bottom mounting of casing has fixed screw socket, and the inside central point department of putting of casing is fixed with the silicon cup, the both sides of silicon cup all are fixed with buffer gear, the top of casing is fixed with the protective cover, and the top of protective cover is provided with the socket, the one end of socket is provided with the cable. The utility model discloses an install casing, binding post, protective cover, recess and insulating gasket, binding post extends to the recess in from the casing, and the inside both sides of recess are provided with insulating gasket to security when increasing the device and using, the outside at casing top is provided with the external screw thread, the inside bottom of protective cover be provided with external screw thread assorted thread groove, be convenient for install the protective cover in the casing top through threaded connection's mode, protect the binding post.

Description

Novel pressure sensor

Technical Field

The utility model relates to a pressure sensor technical field specifically is a novel pressure sensor.

Background

The pressure sensor is a device or a device which can sense pressure signals and can convert the pressure signals into usable output electric signals according to a certain rule, is widely applied to various industrial automatic control environments and relates to various industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, war industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like, but most of the traditional pressure sensors have simple structures and single functions and particularly have the following problems;

1. most of the devices are integrated, and when the wiring terminal is damaged, the wiring terminal is inconvenient to disassemble, overhaul and maintain and use;

2. when the device is used, vibration can be generated due to the influence of external factors, so that internal parts are loosened, induction is influenced, and damage can be caused;

3. the shell of the device has poor self structural strength and compressive property, is easy to crush when being impacted by the outside, and has easy oxidation and rust on the outer wall, thereby being not beneficial to the long-term use of the device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel pressure sensor to solve the maintenance of being not convenient for that proposes in the above-mentioned background art, do not possess safeguard measure and the shorter problem of life.

In order to achieve the above object, the utility model provides a following technical scheme: a novel pressure sensor comprises a shell, a buffer mechanism, a protective cover and a silicon diaphragm, wherein a paint layer is uniformly coated on the outer side of the shell, a fixed screw is fixed at the bottom end of the shell, a silicon cup is fixed at the central position inside the shell, the buffer mechanism is fixed on both sides of the silicon cup, rubber columns are uniformly arranged on both sides of the silicon cup below the buffer mechanism, an induction chamber is arranged at the top end of the silicon cup, the silicon diaphragm is arranged at the bottom end inside the induction chamber, strain resistors are uniformly arranged above the silicon diaphragm, a pipeline is arranged at the central position inside the shell, the pipeline penetrates through the silicon cup to be connected with the silicon diaphragm, a groove is arranged at the top end of the shell, a connecting terminal is uniformly fixed at the central position inside the groove, the bottom end of the connecting terminal is connected with the strain resistors through a wire, and insulating gaskets are arranged on both sides inside the groove, the top of casing is fixed with the protective cover, and the top of protective cover is provided with the socket, the one end of socket is provided with the cable.

Preferably, the inside of casing lateral wall is provided with the carbon steel enhancement layer, and the inside of carbon steel enhancement layer evenly is provided with the strengthening rib, and the strengthening rib all is "H" type structure.

Preferably, the outside at casing top is provided with the external screw thread, the inside bottom of protective cover be provided with external screw thread assorted thread groove, and protective cover and casing constitute the installation and dismantle the structure.

Preferably, the buffer mechanism comprises a moving part, a support, a return spring and a preformed groove, the support is fixed on both sides of the silicon cup, the moving part is fixed in the support through the return spring, and the moving part is connected with the inner wall of the shell.

Preferably, the moving part all is "U" type structure, and the both ends of moving part one side all are provided with the stopper.

Preferably, the rubber balls are distributed on two sides of the carbon steel reinforcing layer at equal intervals, the spring wires are arranged at two ends of the inner part of each rubber ball, and the spring wires are distributed in a bilateral symmetry mode about the rubber balls.

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

(1) this novel pressure sensor is through installing the casing, binding post, the protective cover, recess and insulating gasket, binding post extends to in the recess from the casing, the inside both sides of recess are provided with insulating gasket, security when increasing the device use, the outside at casing top is provided with the external screw thread, the inside bottom of protective cover be provided with external screw thread assorted thread groove, be convenient for install the protective cover in the casing top through threaded connection's mode, protect binding post, avoid dust impurity to be infected with on binding post, cause the pollution, lead to contact failure, also be convenient for dismantle when breaking down simultaneously, detect whether binding post damages.

(2) This novel pressure sensor is fixed with the silicon cup through the inside at the casing, the both sides of silicon cup all are fixed with buffer gear, buffer gear includes the support, the moving part, preformed groove and reset spring, if the device receives external extrusion collision etc. and produces vibrations, the impact force can be used in on the moving part at first, make the moving part to the direction extrusion reset spring of silicon cup, absorb partly impact force through reset spring's resilience, play buffering absorbing function, carry out the protection of certain degree to the silicon cup, avoid internals to receive the influence, avoid making the response not good.

(3) This novel pressure sensor is provided with the carbon steel enhancement layer through the inside at the casing lateral wall, the inside of carbon steel enhancement layer evenly is provided with the strengthening rib of "H" type structure, the structural strength of the device of being convenient for improves, the equidistant range in both sides of carbon steel enhancement layer has the rubber ball, the inside both ends of rubber ball all are provided with the spring wire, make the casing be difficult to damage when receiving external extrusion or collision, the coating of the casing outside has the paint layer simultaneously, can prevent surface oxidation corrosion, the life of extension fixture.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is a schematic side view of the structure of the present invention;

FIG. 3 is a schematic sectional view of the buffering mechanism of the present invention;

fig. 4 is an enlarged cross-sectional structure diagram of the utility model at a in fig. 1.

In the figure: 1. a housing; 2. a silicon cup; 3. a buffer mechanism; 301. a movable member; 302. a support; 303. a return spring; 304. reserving a groove; 4. an induction chamber; 5. a groove; 6. an insulating spacer; 7. a socket; 8. a wiring terminal; 9. a protective cover; 10. a strain resistance; 11. a silicon membrane; 12. a rubber column; 13. a pipeline; 14. fixing the screw; 15. a cable; 16. a carbon steel reinforcing layer; 17. a rubber ball; 18. reinforcing ribs; 19. a spring wire; 20. and (4) paint coating.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a novel pressure sensor comprises a shell 1, a buffer mechanism 3, a protective cover 9 and a silicon diaphragm 11, wherein a paint layer 20 is uniformly coated on the outer side of the shell 1, a carbon steel reinforcing layer 16 is arranged inside the side wall of the shell 1, reinforcing ribs 18 are uniformly arranged inside the carbon steel reinforcing layer 16, the reinforcing ribs 18 are all in an H-shaped structure, rubber balls 17 are distributed on two sides of the carbon steel reinforcing layer 16 at equal intervals, spring wires 19 are arranged at two ends inside the rubber balls 17, and the spring wires 19 are distributed in bilateral symmetry with the rubber balls 17;

the structural strength and the compression resistance of the shell 1 are improved conveniently, so that the shell 1 is not easy to damage when being extruded or collided by the outside;

a fixed screw port 14 is fixed at the bottom end of the shell 1, a silicon cup 2 is fixed at the central position inside the shell 1, buffer mechanisms 3 are fixed on two sides of the silicon cup 2, rubber columns 12 are uniformly arranged on two sides of the silicon cup 2 below the buffer mechanisms 3, each buffer mechanism 3 comprises a movable piece 301, a support 302, a reset spring 303 and a reserved groove 304, the support 302 is fixed on two sides of the silicon cup 2, the movable pieces 301 are fixed inside the support 302 through the reset springs 303, the movable pieces 301 are connected with the inner wall of the shell 1, the movable pieces 301 are U-shaped structures, and limit blocks are arranged at two ends of one side of each movable piece 301;

if the device is vibrated by external extrusion collision and the like, impact force can firstly act on the moving part 301, so that the moving part 301 extrudes the return spring 303 towards the silicon cup 2, part of the impact force is absorbed through resilience of the return spring 303, a buffering and damping function is achieved, the silicon cup 2, the silicon diaphragm 11 and the strain resistor 10 are protected to a certain degree, internal parts are prevented from being influenced, a limiting block on the moving part 301 can prevent slipping during sliding, and stability is improved;

the top end of the silicon cup 2 is provided with an induction chamber 4, the bottom end inside the induction chamber 4 is provided with a silicon diaphragm 11, strain resistors 10 are uniformly arranged above the silicon diaphragm 11, a pipeline 13 is arranged at the central position inside the shell 1, the pipeline 13 penetrates through the silicon cup 2 and is connected with the silicon diaphragm 11, the top end of the shell 1 is provided with a groove 5, a wiring terminal 8 is uniformly fixed at the central position inside the groove 5, the bottom end of the wiring terminal 8 is connected with the strain resistors 10 through a wire, two sides inside the groove 5 are provided with insulating gaskets 6, the top end of the shell 1 is fixed with a protective cover 9, the outer side of the top of the shell 1 is provided with external threads, the bottom end inside the protective cover 9 is provided with thread grooves matched with the external threads, and the protective cover 9 and;

can dismantle protective cover 9 spiral shell when the device breaks down, detect binding post 8 and damage, convenient to overhaul and maintenance, protective cover 9 also can protect binding post 8 simultaneously, avoids dust impurity to be infected with on binding post 8, causes the pollution, leads to contact failure, and protective cover 9's top is provided with socket 7, and socket 7's one end is provided with cable 15.

The working principle is as follows: when the device is used, firstly, the device is fixedly installed at an air inlet of a pipeline to be tested through the fixed screw port 14, the socket 7 is connected with the electric control unit through the cable 15, the inside of the socket 7 is connected with the wiring terminal 8 through a conducting wire (the specific connection structure and principle are the prior art in the field, and are not repeated), when the device works, a medium (air) to be tested entering the air inlet acts on the silicon diaphragm 11 of the device through the pipeline 13, so that the silicon diaphragm 11 generates micro displacement in direct proportion to the pressure of the medium, the resistance value of the strain resistor 10 is changed, the change is detected by an electronic circuit, and a standard measurement signal corresponding to the pressure is converted and output, when the device is used, if the device generates vibration such as external extrusion collision and the like, impact force can act on the moving part 301 firstly, so that the moving part 301 extrudes the reset spring 303 towards the direction of the, absorbing a part of impact force through the resilience of the return spring 303, playing a role of buffering and damping, protecting the silicon cup 2, the silicon diaphragm 11 and the strain resistor 10 to a certain degree, avoiding the influence of internal parts and poor induction, arranging a carbon steel reinforcing layer 16 inside the side wall of the shell 1, uniformly arranging reinforcing ribs 18 with an H-shaped structure inside the carbon steel reinforcing layer 16, facilitating the improvement of the structural strength of the device, arranging rubber balls 17 at equal intervals on two sides of the carbon steel reinforcing layer 16, arranging spring wires 19 at two ends inside the rubber balls 17, making the shell 1 not easy to be damaged when being extruded or collided by the outside, in addition, detaching the protective cover 9 when the device breaks down, detecting whether the wiring terminal 8 is damaged, facilitating the overhaul and maintenance, meanwhile, the protective cover 9 can also protect the wiring terminal 8, and avoiding dust and impurities from being infected on the wiring terminal 8, causing contamination and resulting in poor contact.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a novel pressure sensor, includes casing (1), buffer gear (3), protective cover (9) and silicon diaphragm (11), its characterized in that: the paint coating (20) is uniformly coated on the outer side of the shell (1), the bottom end of the shell (1) is fixedly provided with a fixed screw (14), the central position inside the shell (1) is fixedly provided with a silicon cup (2), both sides of the silicon cup (2) are respectively fixedly provided with a buffer mechanism (3), both sides of the silicon cup (2) below the buffer mechanism (3) are respectively and uniformly provided with a rubber column (12), the top end of the silicon cup (2) is provided with an induction chamber (4), the bottom end inside the induction chamber (4) is provided with a silicon diaphragm (11), a strain resistor (10) is uniformly arranged above the silicon diaphragm (11), the central position inside the shell (1) is provided with a pipeline (13), the pipeline (13) penetrates through the silicon cup (2) to be connected with the silicon diaphragm (11), the top end of the shell (1) is provided with a groove (5), and the central position inside the groove (5) is respectively and uniformly fixed with a wiring terminal (8), the bottom of binding post (8) all is connected with strain resistor (10) through the wire, the inside both sides of recess (5) all are provided with insulating gasket (6), the top of casing (1) is fixed with protective cover (9), and the top of protective cover (9) is provided with socket (7), the one end of socket (7) is provided with cable (15).

2. The novel pressure sensor of claim 1, wherein: the inside of casing (1) lateral wall is provided with carbon steel enhancement layer (16), and the inside of carbon steel enhancement layer (16) evenly is provided with strengthening rib (18), and strengthening rib (18) all are "H" type structure.

3. The novel pressure sensor of claim 1, wherein: the outside at casing (1) top is provided with the external screw thread, the inside bottom of protective cover (9) be provided with external screw thread assorted thread groove, and protective cover (9) constitute the installation with casing (1) and dismantle the structure.

4. The novel pressure sensor of claim 1, wherein: buffer gear (3) are including moving part (301), support (302), reset spring (303) and preformed groove (304), the both sides of silicon cup (2) all are fixed with support (302), and the inside of support (302) all is fixed with moving part (301) through reset spring (303), moving part (301) all is connected with the inner wall of casing (1).

5. The novel pressure sensor of claim 4, wherein: the moving part (301) is of a U-shaped structure, and two ends of one side of the moving part (301) are provided with limiting blocks.

6. The novel pressure sensor of claim 2, wherein: rubber balls (17) are distributed on two sides of the carbon steel reinforcing layer (16) at equal intervals, spring wires (19) are arranged at two ends of the inner portion of each rubber ball (17), and the spring wires (19) are distributed in a bilateral symmetry mode about the rubber balls (17).