CN218628761U

CN218628761U - Diaphragm mounting structure of wind pressure sensor

Info

Publication number: CN218628761U
Application number: CN202223148869.XU
Authority: CN
Inventors: 薛营营; 杨建良
Original assignee: Heshan Tianyi Electrical Appliance Technology Co ltd; Guangdong Jiuhe New Electrical Technology Co ltd
Current assignee: Heshan Tianyi Electrical Appliance Technology Co ltd; Guangdong Jiuhe New Electrical Technology Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-03-14
Anticipated expiration: 2032-11-24

Abstract

The utility model discloses a wind pressure sensor's diaphragm mounting structure, including diaphragm and push rod structure, push rod structure includes the disc portion that links to each other with the diaphragm, and the annular groove of shaping in disc portion, the inner ring limit looks adaptation gomphosis of diaphragm is in the annular groove, disc portion has the annular clamp plate that extends to annular groove opening part through hot melt compression molding, and make annular clamp plate closely support and press on the inner ring edge of diaphragm, play the effect of spacing installation through annular clamp plate to the diaphragm on the disc, the installation is reliable and stable, and the shaping has ripple protruding structure on annular clamp plate dorsad annular groove's side, the design can increase the thickness of this annular clamp plate in order to promote overall structure intensity, thereby can avoid annular clamp plate to jack up the condition of taking place to warp by the elastic force of diaphragm when the shaping, structural stability is good, be favorable to promoting installation leakproofness between diaphragm and the push rod structure, long service life.

Description

Diaphragm mounting structure of wind pressure sensor

Technical Field

The utility model relates to a sensor technical field, concretely relates to wind pressure sensor's diaphragm mounting structure.

Background

The working principle of the wind pressure sensor is that the pressure of the wind pressure sensor is directly acted on a diaphragm of the sensor, so that the diaphragm generates micro displacement which is in direct proportion to the pressure of a medium, a magnetic field of the sensor is changed, an electronic circuit is used for detecting the change, and finally a standard signal corresponding to the pressure is converted and output.

The existing wind pressure sensor mainly comprises a shell, an upper cover, a diaphragm assembly, a spring, a magnet, a Hall sensor and other parts, wherein the diaphragm assembly comprises a diaphragm and a push plate which are connected, the push plate is circular, the diaphragm is mainly made into two forms of circular and annular, the circular diaphragm is covered and fixed on the push plate, the peripheral outline of the diaphragm extending out of the push plate is fixed between the shell and the upper cover, and the diaphragm needs to be made larger; the annular diaphragm is arranged to surround the push plate, specifically, the inner periphery of the diaphragm is tightly embedded in the annular groove on the outer peripheral side wall of the push plate, and the outer periphery of the diaphragm is fixed between the shell and the upper cover.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that solve lies in overcoming among the prior art wind pressure sensor's the diaphragm inner periphery and inlaying in the ring channel of push pedal periphery lateral wall, the diaphragm takes place very easily not hard up or the clearance appears, and installation stability is poor, influences the installation leakproofness, problem that life is short.

In order to solve the technical problem, the utility model provides a wind pressure sensor's diaphragm mounting structure, but diaphragm and push rod structure including reciprocating motion setting in the holding chamber of casing, push rod structure connects the centre bore department of diaphragm, its include with the disc portion that the diaphragm links to each other is in with perpendicular setting push rod portion in the middle of the disc portion bottom surface, and the shaping is in annular groove in the disc portion, the gomphosis of the inner ring limit looks adaptation of diaphragm is in the annular groove, its characterized in that: the disc part is provided with an annular pressure plate extending to the opening of the annular groove through hot melt compression molding, the annular pressure plate is tightly pressed on the inner annular edge of the diaphragm, and a corrugated convex structure is formed on the side surface of the annular pressure plate, which is back to the annular groove.

Preferably, the corrugated convex structure is composed of a plurality of triangular convex tip blocks which are formed on the annular pressing plate in a circular array.

As a preferable scheme, a limiting opening through which the diaphragm can pass is formed between the annular pressing plate and the outer side wall of the annular groove, and the opening direction of the limiting opening is parallel to the radial direction of the disc portion.

Preferably, the disc portion includes an annular boss for hot-melt press molding into the annular pressure plate, and the annular boss is concentrically disposed inside the annular groove.

As a preferable scheme, one side wall of the annular boss is flush and connected with the inner side wall of the annular groove.

As a preferred scheme, the disc portion further comprises a glue blocking boss concentrically arranged on the inner side of the annular boss and in an annular shape, the glue blocking boss is lower than the annular boss, and the annular pressing plate extends outwards to the annular groove during hot-melt die pressing and extends inwards to be connected to the glue blocking boss.

Preferably, the housing includes an upper cover and a base, and the outer annular edge of the diaphragm is hermetically disposed between the upper cover and the base and divides the accommodating cavity between the upper cover and the base into an upper chamber and a lower chamber.

As a preferable scheme, a limit groove with an annular structure is arranged on the base, the outer annular edge of the diaphragm is embedded in the limit groove in a matching mode, at least one first annular bulge in extrusion contact with the outer annular edge is arranged in the limit groove, and at least one second annular bulge in extrusion contact with the outer annular edge is arranged at the position, corresponding to the limit groove, of the upper cover.

Preferably, at least one third annular protrusion is arranged in the annular groove and is in compression contact with the inner annular edge.

The utility model discloses technical scheme has following advantage compared in prior art:

1. the utility model provides an among wind pressure sensor's diaphragm mounting structure, the push rod structure comprises disc portion and push rod portion, with the inner ring limit gomphosis of diaphragm in the annular groove of disc portion, disc portion has the annular pressing plate that extends to annular groove opening part through hot melt compression molding, this kind of annular pressing plate closely supports after the shaping and presses at the inner ring edge of diaphragm, take place the pine phenomenon from the annular groove in preventing the inner ring edge of diaphragm, thereby play the effect of spacing installation to the diaphragm on the disc, the installation is reliable and stable, because the diaphragm receives the extrusion of annular pressing plate can produce elastic deformation, through shaping ripple protruding structure on the side of annular pressing plate dorsad annular groove, the design can increase this annular pressing plate thickness in order to promote overall structure intensity, thereby can avoid annular pressing plate to take place the circumstances of deformation by the elastic force jack-up of diaphragm when the shaping, structural stability is good, guarantee that this annular pressing plate tightly pushes down spacing diaphragm, be favorable to promoting installation leakproofness between diaphragm and the push rod structure, long service life, and in the performance that promotes the product.

2. The utility model provides an among wind pressure sensor's the diaphragm mounting structure, disc portion glues the boss including the annular boss that sets up with keeping off, should keep off gluey boss be located annular boss inboard and be less than the setting of annular boss, the benefit of design lies in like this, the in-process for annular clamp plate with annular boss hot melt compression molding, can play through annular boss and keep off gluey limiting displacement to the annular clamp plate under the hot melt state, in order to prevent that this annular clamp plate is irregular to being close to the inboard condition that extends and cause the unevenness of disc portion, guarantee to level and smooth rule by annular boss hot melt compression molding's annular clamp plate, the aesthetic property is good.

3. The utility model provides an among wind pressure sensor's the diaphragm mounting structure, seal according to the interior ring edge of diaphragm and set up in the annular groove of disc portion, its outer ring edge is sealed to be set up between upper cover and base, and be equipped with the spacing groove that is fit for holding the outer ring edge on the base, it is protruding with the second annular that the interior ring edge extrusion contact of diaphragm was equipped with respectively on through spacing groove and the upper cover, and be equipped with the third annular that contacts with the interior ring edge extrusion contact of diaphragm in the annular groove and protruding, the benefit of design lies in like this, through first, the compactness of sealing contact between the outer ring edge that the second annular is protruding had promoted the diaphragm and upper cover and the base, and the inseparability of sealing contact between the interior ring edge that has promoted the diaphragm through the third annular is protruding, the installation leakproofness is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a diaphragm mounting structure of a wind pressure sensor according to the present invention;

fig. 2 is a schematic structural view of the push rod structure of the present invention after the annular pressing plate is formed;

FIG. 3 is a schematic structural view of the push rod structure of the present invention before the annular pressing plate is formed;

fig. 4 is a schematic view of a partial enlarged structure of a diaphragm mounting structure of a wind pressure sensor according to the present invention;

description of reference numerals: 1. a base; 11. a limiting groove; 12. a first annular projection; 2. an upper cover; 21. a second annular embossment; 3. a membrane; 4. a push rod structure; 41. a disk portion; 42. a push rod part; 43. an annular boss; 44. a glue blocking boss; 5. an annular groove; 51. a limiting port; 52. a third annular projection; 6. an annular pressure plate; 7. and (4) a corrugated convex structure.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment is described in detail below with reference to the drawings:

this embodiment provides as shown in fig. 1-4 a wind pressure sensor's diaphragm mounting structure, but including reciprocating motion setting diaphragm 3 and push rod structure 4 in the holding chamber of casing, push rod structure 4 is connected the centre bore department of diaphragm 3, its include with the disc portion 41 that diaphragm 3 links to each other, and the perpendicular setting is in push rod portion 42 in the middle of the 41 bottom surfaces of disc portion, and the shaping is in annular groove 5 on the disc portion 41, the gomphosis of the interior ring limit looks adaptation of diaphragm 3 is in the annular groove 5, disc portion 41 has the annular clamp plate 6 that extends to the 5 openings of annular groove through hot melt compression molding, and makes annular clamp plate 6 closely supports and presses in on the inner ring of diaphragm 3, annular clamp plate 6 shaping has ripple convex structure 7 on the side of annular groove 5 dorsad.

The above-mentioned implementation is the core technical scheme of this embodiment, constitute by disc portion 41 and push rod portion 42 according to push rod structure 4, with the inner ring limit gomphosis of diaphragm 3 in the annular groove 5 of disc portion 41, disc portion 41 has the annular clamp plate 6 that extends to annular groove 5 opening part through hot melt compression molding, this kind of annular clamp plate 6 closely supports after the shaping and presses at the inner ring edge of diaphragm 3, take place the pine and take off the phenomenon from annular groove 5 in order to prevent the inner ring edge of diaphragm 3, thereby play the effect of spacing installation on the disc to diaphragm 3, the installation is reliable and stable, because diaphragm 3 receives the extrusion of annular clamp plate 6 and can produce elastic deformation, through the shaping ripple protruding structure 7 on the side of annular clamp plate 6 dorsad annular groove 5, the design can increase the thickness of this annular clamp plate 6 in order to promote overall structure intensity, thereby can avoid the annular clamp plate takes place the circumstances of deformation by the elastic force jack-up of diaphragm 3 when the shaping, structural stability is good, guarantee this annular clamp plate 6 is spacing to tightly push down diaphragm 3, be favorable to promote installation leakproofness between diaphragm and push rod structure, long service life, and promote the performance of product.

As a preferred embodiment, the corrugated raised structure 7 is composed of a plurality of triangular raised blocks formed on the annular pressing plate 6 in a circular array, the raised blocks are formed on the upper side of the annular pressing plate 6, the lower side of the annular pressing plate 6 is in flat contact with the membrane 3, the overall structural strength of the annular pressing plate 6 can be enhanced through the array distribution of the raised blocks, and it is ensured that the annular pressing plate 6 can be tightly pressed on the membrane 3.

The specific structure of the disc portion is described in detail below with reference to fig. 1-3:

disc portion 41 is including being used for hot melt compression molding to do annular boss 43 of annular pressure plate 6, annular boss 43 is concentric to be set up 5 inboards of annular groove, and is concrete, one side lateral wall of annular boss 43 with the inside wall parallel and level of annular groove 5 links to each other the setting, and this kind of structure sets up, and is right through special mould annular boss 43 carries out hot melt compression molding to make annular boss 43 hot melt under high temperature extend and open, formed annular pressure plate 6 after extending and cooling to 5 one side of annular groove gradually annular pressure plate 6 with form spacing mouthful 51 between the lateral wall of annular groove 5, the opening direction of spacing mouthful 51 is on a parallel with disc portion 41's radial can make the diaphragm part normally pass through spacing mouthful, but can restrict the inner ring limit of diaphragm and deviate from spacing mouthful position.

As shown in fig. 3, the disc portion 41 further includes a glue blocking boss 44 concentrically disposed inside the annular boss 43 and having an annular shape, the glue blocking boss 44 is disposed lower than the annular boss 43, and the annular pressing plate 6 extends outward to the annular groove 5 during hot-melt molding and is connected to the glue blocking boss 44 in an inward extending manner. The benefit of design like this lies in, the in-process of forming annular boss 43 hot melt compression molding into annular clamp plate 6, can play through annular boss 43 and keep off gluey limiting displacement to annular clamp plate 6 under the hot melt state to prevent that this annular clamp plate 6 is irregular to being close to the inboard condition that extends of disc portion 41 and cause the unevenness, guarantee by annular boss hot melt compression molding's annular clamp plate level and neatly regular, the aesthetic property is good.

In this embodiment, the casing includes upper cover 2 and base 1, and sets up the positive negative air pipe mouth that connects on upper cover 2 and the base 1 respectively, diaphragm 3 links to each other with push rod structure 4 and separates into upper chamber and lower chamber with the holding chamber between upper cover 2 and the base 1, and will the sealed setting in outer ring edge of diaphragm 3 between upper cover 2 and the base 1, in addition the outer ring edge of diaphragm 3 be with 41 sealing connection of disc portion, just so guarantee the leakproofness between upper chamber and the lower chamber, make the diaphragm drives under the pressure differential effect of upper and lower chamber push rod structure makes up-and-down reciprocating motion.

As a specific structure, as shown in fig. 4, a limit groove 11 with an annular structure is provided on the base 1, the outer annular edge of the diaphragm 3 is fittingly embedded in the limit groove 11, a first annular protrusion 12 in pressing contact with the outer annular edge is provided in the limit groove 11, two second annular protrusions 21 in pressing contact with the outer annular edge are provided at a position of the upper cover 2 corresponding to the limit groove 11, and a third annular protrusion 52 in pressing contact with the inner annular edge is provided in the annular groove 5. The advantage of this design is that the tightness of the sealing contact between the outer annular edge of the diaphragm and the cover and base is improved by the first and second annular protrusions 21, and the tightness of the sealing contact between the inner annular edge of the diaphragm and the disc portion is improved by the third annular protrusion 52, so that the mounting tightness is better.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a wind pressure sensor's diaphragm mounting structure, but includes diaphragm (3) and push rod structure (4) of reciprocating motion setting in the holding chamber of casing, push rod structure (4) are connected the centre bore department of diaphragm (3), its include with disc portion (41) that diaphragm (3) link to each other, and set up perpendicularly push rod portion (42) in the middle of disc portion (41) bottom surface, and the shaping is in annular groove (5) on disc portion (41), the gomphosis of the inner ring limit looks adaptation of diaphragm (3) is in annular groove (5), its characterized in that: the disc part (41) is provided with an annular pressing plate (6) extending to the opening of the annular groove (5) through hot-melt compression molding, the annular pressing plate (6) is tightly pressed on the inner ring edge of the diaphragm (3), and a corrugated convex structure (7) is formed on the side surface of the annular pressing plate (6) back to the annular groove (5).

2. The diaphragm mounting structure of a wind pressure sensor according to claim 1, wherein: the corrugated convex structure (7) is formed by a plurality of triangular convex tip blocks which are formed on the annular pressing plate (6) in a circular array mode.

3. The diaphragm mounting structure of a wind pressure sensor according to claim 2, wherein: a limiting opening (51) for the diaphragm (3) to pass through is formed between the annular pressure plate (6) and the outer side wall of the annular groove (5), and the opening direction of the limiting opening (51) is parallel to the radial direction of the disc part (41).

4. The diaphragm mounting structure of a wind pressure sensor according to claim 3, wherein: the disc part (41) comprises an annular boss (43) used for hot-melt compression molding of the annular pressing plate (6), and the annular boss (43) is concentrically arranged on the inner side of the annular groove (5).

5. The diaphragm mounting structure of a wind pressure sensor according to claim 4, wherein: the side wall of one side of the annular boss (43) is flush with the inner side wall of the annular groove (5) and is arranged in a connected mode.

6. The diaphragm mounting structure of a wind pressure sensor according to claim 5, wherein: disc portion (41) still including concentric setting be the boss (44) of gluing of fender of annular form in annular boss (43) inboard, keep off and glue boss (44) and be less than annular boss (43) setting, annular clamp plate (6) outwards extend to annular groove (5) department when hot melt mould pressing, its inwards extend connect in keep off and glue boss (44).

7. The diaphragm mounting structure of a wind pressure sensor according to any one of claims 1 to 6, wherein: the casing includes upper cover (2) and base (1), diaphragm (3) link to each other with push rod structure (4) and separate into upper plenum chamber and lower plenum chamber with the holding chamber between upper cover (2) and base (1), and will the outer annular edge of diaphragm (3) seals to be set up between upper cover (2) and base (1).

8. The diaphragm mounting structure of a wind pressure sensor according to claim 7, wherein: be provided with limit groove (11) of loop configuration on base (1), the outer ring limit looks matching gomphosis of diaphragm (3) is in limit groove (11), be provided with in limit groove (11) with at least one first annular arch (12) that the outer ring limit extrusion contact, the position that upper cover (2) corresponds limit groove (11) be provided with at least one second annular arch (21) that the outer ring limit extrusion contact.

9. The diaphragm mounting structure of a wind pressure sensor according to claim 8, wherein: at least one third annular protrusion (52) which is in extrusion contact with the inner annular edge is arranged in the annular groove (5).