CN213422272U

CN213422272U - Spiral buckle flow sensor fixed by PCB plate and screw

Info

Publication number: CN213422272U
Application number: CN202022127557.5U
Authority: CN
Inventors: 金云
Original assignee: Foshan Jin Gate Water Purification Equipment Co ltd
Current assignee: Foshan Jin Gate Water Purification Equipment Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-06-11
Anticipated expiration: 2030-09-17

Abstract

The utility model provides a PCB board takes screw fixation's spiral buckle flow sensor, it is main including supporting, the shell, magnet, the impeller, the axle, PCB board hall sensor, sealing washer 9, it is as an organic whole with the front bearing to support, the shell is as an organic whole with the rear bearing, characterized by is that PCB board hall sensor prevents in the screw seat hole of flow sensor's shell that the fix with screw from droing, support and the design that the shell adopted spiral buckle to connect, the spiral buckle flow sensor of this kind of design, its simple structure is high temperature resistant, the production technology is good, the assembly is easy, PCB hall sensor is difficult for droing, and very convenient the dismantlement after the product assembly, maintainability is very good. The mass production has the advantages of easy repair of unqualified products, reduced quality loss and improved economic benefit.

Description

Spiral buckle flow sensor fixed by PCB plate and screw

Technical Field

The utility model relates to a spiral buckle flow sensor of PCB slab band fix with screw relates to water treatment technical field, more specifically relates to the flow sensor application of commercial water dispenser, coffee machine, domestic water purifier, domestic water heater.

Background

The drinking water and water purification industry is vigorously developed in China, and the flow sensor is widely applied to the commercial and household drinking water and water purification industries. In the information age of internet of things, flow sensors are widely used in charging and billing systems, such as: intelligent water meter, fee-charging drinking machine, etc. The flow sensor can be used for accurately measuring the flow and conveniently measuring the service life of the filter element, so that a user is accurately prompted to maintain the water purifier and replace the filter element.

When the flow sensor is used in a high-temperature environment for measuring boiled water, the circuit board of the Hall sensor chip is packaged with the flow sensor shell by epoxy glue, the epoxy glue is easy to soften at high temperature, the viscous force is reduced and the flow sensor falls off, so that the function of the flow sensor is lost. As shown in fig. 5, a conventional flow sensor, an axial flow quick-coupling flow sensor of patent No. 201721611439.3, which has a snap-fit assembly structure, has the advantages of high assembly efficiency and fatal disadvantages: when the circuit board is used for measuring boiled water, the Hall sensor chip circuit board integrated on the PCB is easy to fall off at a high temperature, so that the function is lost. Another drawback of such flow sensors is that: once the assembly is completed, the assembly cannot be disassembled, and if the assembly quality problem or the accuracy of the flow sensor has errors, the assembly design cannot be repaired when the quality problem occurs to the product, the assembly design has poor maintainability, and the assembly can be disassembled only by destructive dissection.

Disclosure of Invention

The utility model discloses the technical problem that needs to solve is: the defects that the epoxy glue pouring adhesion force is insufficient and the maintainability is poor in the high-temperature use environment of the conventional buckle type flow sensor are overcome, and a spiral buckle flow sensor fixed by PCB plate strips and screws is researched and designed.

The utility model discloses specific technical scheme is: a spiral buckle flow sensor fixed by a PCB plate with screws mainly comprises a support, a shell, a magnet, an impeller, a shaft, a PCB Hall sensor and a sealing ring, wherein the support and a front bearing are integrated, and the shell and a rear bearing are integrated; inside impeller and the axle fixed connection of flow sensor, the axle both ends respectively with the circular cone hole cooperation of front bearing and rear bearing, magnet is inlayed and is become as an organic whole in the impeller, rivers flow in from figure 1 arrow direction that intakes, when rivers pass through the impeller, it is rotatory to strike the impeller, rotatory impeller drives the rotatory magnetic field polarity that changes of magnet, PCB board hall sensor senses the magnetic pole and changes and produce pulse signal, pulse signal's quantity and flow size have the associativity, carry out flow sensor's measurement work through collecting pulse signal.

The design scheme of the flow sensor is that the support is provided with a raised spiral buckle tooth, the shell is provided with a spiral slideway, a spiral tooth joggle and a spiral buckle window, and the middle of the spiral buckle window is provided with a reinforcing rib, when the spiral buckle tooth on the support is screwed along the spiral slideway of the shell, the spiral buckle tooth can be tightly clamped with the spiral buckle window and the spiral tooth joggle on the shell.

The design scheme of the flow sensor is that a self-locking convex rib is arranged on a support, a self-locking groove is arranged on a shell, and the self-locking convex rib is clamped into the self-locking groove to form self-locking when the support is screwed into the shell.

The design scheme of the flow sensor is that a screw directly contacts a PCB on a PCB Hall sensor in a glue pouring groove, and the PCB Hall sensor is fixedly connected with a screw seat in the glue pouring groove on the shell through the screw.

The flow sensor has the design scheme that the screw is packaged in the glue filling groove by epoxy glue and is not exposed.

The utility model has the advantages that: the spiral buckle flow sensor fixed by the PCB plate and the screw has the advantages of simple structure, high temperature resistance, good production manufacturability, easy assembly, difficult falling of the PCB Hall sensor, convenient disassembly after assembly of products and very good maintainability. The mass production has the advantages of meeting the requirement of use in a high-temperature boiled water environment, being particularly easy to repair unqualified products, reducing the quality loss and improving the economic benefit.

Description of the drawings:

FIG. 1 the utility model discloses a spiral buckle flow sensor assembly sketch map of PCB slab band fix with screw

FIG. 2 the utility model discloses a PCB slab band fix with screw's spiral buckle flow sensor supports schematic diagram

Fig. 3 the utility model discloses a spiral buckle flow sensor shell sketch map of PCB slab band fix with screw

Fig. 4 the utility model discloses a spiral buckle flow sensor equipment schematic diagram of PCB slab band fix with screw

Figure 5 prior art product patent number: 201721611439.3 flow sensor schematic

Figure 6 prior art product patent number: 201721611439.3 flow sensor support schematic

FIG. 7 is an enlarged view of a portion of FIG. 1; FIG. 8 is an enlarged view of a portion of FIG. 2; FIG. 9 is an enlarged view of FIG. 3K

In the present invention, the reference numerals in the drawings 1 to 4 and 7 to 9 respectively represent:

a front bearing 2, a magnet 3, a PCB (printed circuit board) Hall sensor 4, an impeller 5, a shaft 6, a rear bearing 7, a shell 8, a sealing ring 9, a spiral fastening tooth 10, a spiral fastening tooth 11, a self-locking convex rib 12, a spiral fastening window 13, a spiral slideway 14, a reinforcing rib 15, a self-locking groove 16, a screw seat 17, a screw 18 and a glue pouring groove 29 are supported 1, wherein the arrow in figure 4 is a rotary mounting rotation direction; I. II and K are respectively a partial enlarged view of FIG. 1, a partial enlarged view of FIG. 2 and an enlarged view of FIG. 3K.

The utility model discloses specification attached figure 5, the current patent number of figure 6: 201721611439.3, the flow sensors are respectively identified by the reference numerals: the housing 19 impeller 20 magnet 21 PCB board hall sensor 22 shaft 23, support 24 seal 25 front bearing 26 rear bearing 27 snap tooth 28 arrow in figure 5 indicates water flow direction.

The specific implementation mode is as follows:

detailed diagrams of fig. 1 to 4 show that a spiral buckle flow sensor fixed by a PCB plate and a screw mainly comprises a support 1, a shell 8, a magnet 3, an impeller 5, a shaft 6, a PCB Hall sensor 4 and a seal ring 9, wherein the support 1 and a front bearing 2 are integrated, the shell 8 and a rear bearing 7 are integrated, and the spiral buckle flow sensor is characterized in that the PCB Hall sensor 4 is fixed in a screw seat 17 hole of the flow sensor shell 8 by a screw 18 to prevent the PCB from falling off; the support 1 and the shell 8 adopt a design scheme of spiral buckle connection; inside impeller 5 and the 6 fixed connection of axle of flow sensor, 6 both ends of axle respectively with the circular cone hole cooperation of front bearing 2 and rear bearing 7, magnet 3 inlays to become as an organic whole in impeller 5, rivers flow in from figure 1 arrow direction that intakes, when rivers pass through impeller 5, it is rotatory to strike impeller 5, rotatory impeller 5 drives 3 rotatory change magnetic field polarities of magnet, PCB board hall inductor 4 senses the magnetic pole and changes and produce pulse signal, pulse signal's quantity and flow size have the associativity, carry out flow sensor's measurement work through collecting pulse signal.

The design scheme of the flow sensor is that a support 1 is provided with a raised spiral buckling tooth 10, a shell 8 is provided with a spiral slideway 14, a spiral tooth joggle 11 and a spiral buckling window 13, a reinforcing rib 15 is arranged in the middle of the spiral buckling window 13, and when the spiral buckling tooth 10 on the support 1 is screwed along the spiral slideway 14 on the shell 8, the spiral buckling tooth can be tightly clamped with the spiral buckling window 13 and the spiral tooth joggle 11 of the shell 8.

The flow sensor is characterized in that a self-locking convex rib 12 is arranged on the support 1, a self-locking groove 16 is arranged on the shell, and the self-locking convex rib 12 is clamped into the self-locking groove 16 to form self-locking when the support 1 is screwed into the shell 8.

The design scheme of the flow sensor is that a screw 18 is directly contacted with a PCB on the PCB Hall sensor 4 in a glue pouring groove 29, and the PCB Hall sensor 4 is fixedly connected with a screw seat 17 in the glue pouring groove 29 on the shell 8 through the screw 18.

The flow sensor is designed in such a way that the screw 18 is sealed by epoxy glue in the glue pouring groove 29 without being exposed.

Claims

1. A spiral buckle flow sensor fixed by a PCB plate with a screw mainly comprises a support, a shell, a magnet, an impeller, a shaft, a PCB Hall sensor and a sealing ring, wherein the support and a front bearing are integrated, and the shell and a rear bearing are integrated; the inside impeller and the axle fixed connection of flow sensor, the axle both ends respectively with the circular cone hole cooperation of front bearing and rear bearing, magnet is inlayed and is become as an organic whole in the impeller, rivers flow in from the direction of intaking, when rivers pass through the impeller, it is rotatory to strike the impeller, rotatory impeller drives the rotatory magnetic field polarity that changes of magnet, PCB board hall sensor senses the magnetic pole and changes and produce pulse signal, pulse signal's quantity and flow size have the associativity, carry out flow sensor's measurement work through collecting pulse signal.

2. The spiral buckle flow sensor fixed by the screws on the PCB plate as claimed in claim 1, wherein the support is provided with a protruding spiral buckle tooth, the housing is provided with a spiral slideway, a spiral tooth engaging buckle and a spiral buckle window, and a reinforcing rib is arranged in the middle of the spiral buckle window, and the spiral buckle tooth on the support can be tightly clamped with the spiral buckle window and the spiral tooth engaging buckle on the housing when being screwed along the spiral slideway on the housing.

3. The PCB plate with screw fixed spiral buckle flow sensor of claim 2, wherein the support is provided with a self-locking rib, the housing is provided with a self-locking groove, and the self-locking rib is clamped into the self-locking groove when the support is screwed into the housing to form self-locking.

4. The spiral buckle flow sensor fixed by the PCB plate and the screw according to claim 1, wherein the screw directly contacts with the PCB on the PCB Hall sensor in the glue pouring groove and fixedly connects the PCB Hall sensor with a screw seat in the glue pouring groove on the shell through the screw.

5. The spiral buckle flow sensor fixed by the PCB plate belt screw according to claim 4, wherein the screw is sealed by epoxy glue in the glue pouring groove without being exposed.