CN2259883Y

CN2259883Y - Urine pad with wetness alarm for baby

Info

Publication number: CN2259883Y
Application number: CN 96200671
Authority: CN
Inventors: 王庆修
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-18
Filing date: 1996-01-18
Publication date: 1997-08-20
Anticipated expiration: 2006-01-18

Abstract

The utility model relates to a urine pad with a wetness alarm for a baby. The utility model is composed of a circuit box 1, a conduction clip 2, and a urine wetness sensor 3, which are connected in turn, wherein the urine wetness sensor 3 is composed of a flexible plastic film 11 and two flexible aluminium films 12; a circuit plate 29 is arranged in a box cover 31 of the circuit box 1 and is limited by a T-shaped bulge 33 and two L-shaped bulges 35; a control circuit 4 of the circuit board 29 is composed of another urine wetness sensor 5 and a triode 6. One end of the urine wetness sensor 5 is connected with a base of the triode 6, and the other end is connected with a collector; after the collector passes by a battery 8 and a switch 7, the collector and an emitter of the triode are simultaneously coupled in a vocalization circuit 9. The utility model has the advantages of simple circuit, flexible sensor, convenient manufacture and convenient use.

Description

The baby's urinating buzzer

This utility model relates to beeper, specifically is a kind of baby's urinating buzzer.

The baby does not have language table Danone profit, just is easy to eczema as if untimely replacing after urine pad urine is wet.For this reason, there is the people once to design the alarm device of baby's urinating.This alarm device has solved the warning problem of baby's urinating to a certain extent, but the urine wet sensor of this alarm device is made by two bit solid conductive materials, volume is very little, only be placed in the urine pad the position very accurately or the wet degree of urine just work when very big, in addition, this urine wet sensor inconvenience combines with the urine pad and carries out mechanization production.In addition, the components and parts that the control circuit of existing alarm device for urine wet uses are more, the cost height, and the design of sounding resonant cavity is unsatisfactory, causes sound not spread out of unblockedly.Moreover urine wet sensor is fixedlyed connected with circuit, uses inconvenience.

The purpose of this utility model is the problem that exists at above-mentioned alarm device for urine wet, provides a kind of alarm control circuit simple, and urine wet sensor is easy to use, and is highly sensitive, and is convenient to combine the baby's urinating buzzer of producing in batches with the urine pad.

This utility model is achieved in that the baby's urinating buzzer comprises circuit box, conductive clamp and urine wet sensor.Conductive clamp is connected with circuit in the circuit box by lead.Conductive clamp and urine wet sensor are clamped and connected mutually.Circuit box is made up of at the bottom of the box lid, interconnects by screw.Circuit board that phonation circuit constitutes and the sound-producing device that is made of the buzzing sheet are housed in the box by control circuit.

Urine wet sensor is made of softish insulator and two softish electric conductors.Article two, softish electric conductor is fixed on a side of softish insulator, or is individually fixed in the both sides of flexible insulation body.

The flexible insulation body can be plastic sheeting or paper, and the flexible conductive body can be two strip metal paper tinsel or metal films.

Be provided with T type projection and two L type projectioies that are symmetrical in T type projection at the bottom of the box of circuit box.Be shaped on the wiring board with T type projection and the corresponding T type groove of L type projection and breach and by T type groove and breach and snap in the protruding and L type projection of corresponding T type, circuit board is located at the bottom of the box.Two button cell conducting strips on the circuit board lay respectively in the  type groove that T type projection and two L types convex to form, and link to each other with printed circuit.The buzzing sheet is loaded in the resonant cavity of lid.Resonant cavity sounding mouth is opened the side at circuit box, preferably drives one side in the termination.Locate by the alignment pin locating hole with lid at the bottom of the box, be connected by screw base, screw hole.Removable battery cover is housed on the lid, the conductive spring leaf of two button cells polyphone in can making at the bottom of the box is housed in the battery cover.

Control circuit is made of urine wet sensor and crystal triode.One end of urine wet sensor links to each other with transistor base, and the other end links to each other with transistor collector.The colelctor electrode of audion links to each other with anode, and emitter stage links to each other with phonation circuit.The negative pole of battery links to each other with switch, and the other end of switch links to each other with phonation circuit.The outfan of phonation circuit links to each other with the buzzing sheet.Phonation circuit and the available commercially available prod of buzzing sheet.

Conductive clamp constitutes at the bottom of by conductive clamp lid and conductive clamp.Conductive clamp lid with at the bottom of the conductive clamp by tightening up post and screw is connected.Two tighten up that clamping has spring leaf between the post, and a termination of spring leaf leans out conductive clamp, and the spring leaf middle part is supported on the projection at the bottom of the conductive clamp.The termination of conductive clamp lid be embedded with join with spring leaf and intermediate plate.Conductive clamp has covered a movable tongue, a compression leg is arranged below the movable tongue.Two leads are connected with spring leaf with intermediate plate respectively, and draw from the wire guide of conductive clamp.

Intermediate plate can be a sheet metal, also can be to be made of two fixed side by side two conducting strips.

Urine wet sensor of the present utility model is owing to adopt soft insulator and soft electric conductor is made, thereby can do long greatlyyer, and can make one with the urine pad, thereby is quick on the draw, as long as there is urine wet slightly, can sound.In addition, urine wet sensor is suitable for continuous production in enormous quantities.Because control circuit is simplified, and cost is obviously reduced.

Fig. 1 is a sketch map of the present utility model;

Fig. 2 is a circuit diagram of the present utility model;

Fig. 3 is a kind of structural map of urine wet sensor;

Fig. 4 is the structural map of another kind of urine wet sensor;

Fig. 5 is the cutaway view of conductive clamp;

Fig. 6 is the upward view of conductive clamp lid;

Fig. 7 is the vertical view at the bottom of the conductive clamp;

Fig. 8 is the sketch map that circuit the two poles of the earth all link to each other with intermediate plate;

Fig. 9 is the sketch map that circuit the two poles of the earth link to each other with spring leaf with intermediate plate respectively;

Figure 10 is the front view at the bottom of the circuit box box;

Figure 11 is the B-B cutaway view of Figure 10;

Figure 12 is the A-A cutaway view of Figure 10;

Figure 13 is the front view of circuit box lid;

Figure 14 is the D-D cutaway view of Figure 13;

Figure 15 is the C-C cutaway view of Figure 13;

Figure 16 is the view of battery cover inboard on the lid.

Below in conjunction with examples of implementation shown in the drawings this utility model is further described:

As shown in Figure 1, the baby's urinating buzzer is mainly by circuit box 1,3 three formations of conductive clamp 2 and urine wet sensor.Conductive clamp 2 links to each other (Figure 10) with circuit board 29 in the circuit box by lead, and conductive clamp 2 can be clipped on the urine wet sensor, and the time spent can not take off from urine wet sensor 3.Urine wet sensor 3 is made of the plastic foil 11 and the aluminum film 12 of flexibility.Aluminum film 12 is two, can be positioned at a side of plastic foil 11 abreast, also can lay respectively at plastic foil 11 both sides (Fig. 3, Fig. 4).For increasing the reliability of urine wet sensor, aluminum film 12 also can make two groups, and every group is interconnected.Said aluminum film vacuum available evaporation process is produced, and also can paste with aluminium foil.This urine wet sensor can be made separately, also can make one with the disposable urine pad, uses with convenient.Conductive clamp 2 is by conductive clamp lid 15, and at the bottom of the conductive clamp 19 and intermediate plate 18, spring leaf 20 constitutes, as Fig. 5, Fig. 6, shown in Figure 7.19 are connected by screw at the bottom of conductive clamp lid 15 and the conductive clamp.Spring leaf 20 is held at the bottom of conductive clamp lid and the conductive clamp two and tightens up post 14 and tighten up between the post 22.The middle part of spring leaf 20 is supported on the projection 21 at the bottom of the conductive clamp, and its end leans out an end of conductive clamp.Intermediate plate is embedded in an end of conductive clamp lid and coincide with spring leaf 20.On the conductive clamp lid 15 movable tongue 16 is arranged.There is the compression leg 17 of a dead spring sheet 20 inboard of movable tongue 16.Depress movable tongue 16, by compression leg 17 spring leaf 20 is depressed, urine wet sensor 3 can be put between intermediate plate 18 and the spring leaf 20, unclamp movable tongue 16, urine wet sensor is promptly clamped.According to the different structure of urine wet sensor 3, intermediate plate 18 has two kinds of structures: a kind of is a sheet metal, and another kind is a sheet metal 26 of fixing two mutually insulateds on nonmetal, as Fig. 8, shown in Figure 9.For ease of 19 accurate assembling at the bottom of conductive clamp lid 15 and the conductive clamp, be shaped on alignment pin 24 and locating hole 25 respectively at the bottom of conductive clamp lid and the conductive clamp.Enter conductive clamp 2 from two leads of circuit board 29 wire guide 23 by the conductive clamp termination, and link to each other with intermediate plate 18, spring leaf 20 respectively, or link to each other with two sheet metals 26 on the intermediate plate 18 respectively.

Circuit box 1 comprises at the bottom of the box 31, lid 39.At the bottom of the box 31 with lid 39 by the screw base 32 at the bottom of the box, the screw hole 41 usefulness screws on the lid are connected, and by alignment pin 34 at the bottom of the box and the locating hole 42 on the lid, make at the bottom of the box 31 accurately to locate with lid 39.Be provided with protruding 33 symmetric two the L type projectioies 35 of T type projection 33 and relative T type at the bottom of the box in 31.Also have the switch hole 30 that switch 7 is installed at the bottom of the box on 31.Be shaped on the circuit board 29 and T type projection 33 at the bottom of the box, L type projection 35 corresponding T type groove 37 and breach 36, and in correspondence is installed at the bottom of the box one by one, like this, the conducting strip 27 of the installation of two on the circuit board 29 button cell just in time is positioned at two  type grooves that 33 and two L types projectioies 35 of T type projection form.The printed circuit 28 that control circuit 4, phonation circuit 9 are arranged on the circuit board 29.Resonant cavity 40 is arranged in the lid 39, and resonant cavity sounding mouth 38 is opened on the side of lid 39, places buzzing sheet 10 in the resonant cavity 40.Buzzing sheet 10 links to each other with phonation circuit 9 at the bottom of the box by lead.There is one on the lid 39 for the battery cover 43 that battery is installed.There is a conductive spring leaf 44 that can make two button cell polyphones the inboard of battery cover 43.

Circuit on the circuit board 29 is made up of control circuit 4, phonation circuit 9, battery 8, switch 7 and buzzing sheet 10.Control circuit 4 is made of urine wet sensor 5 that is equivalent to variable resistance R and audion 6.One end of urine wet sensor 5 links to each other with the base stage of audion 6, the other end links to each other with the colelctor electrode of audion 6, the colelctor electrode of audion links to each other with the positive pole of battery 8, and the negative pole of battery 8 links to each other with an end of switch 7, and the other end of switch 7 links to each other with generation circuit 9 with the emitter stage of audion.The outfan of phonation circuit 9 links to each other with buzzing sheet 10.Phonation circuit and buzzing sheet all have the commercially available prod.

During use, urine wet sensor 5 places the urine pad, or is produced in the urine pad.When the urine pad was dry, the resistance between two conductive materials on the urine wet sensor 5 was very big, and promptly the variable resistance R among Fig. 2 is very big, and audion is non-conductive.After urine pad urine was wet, the resistance between two conductive materials diminishes, and was little behind certain value, the audion conducting, and control circuit is connected battery and phonation circuit, and phonation circuit drives the buzzing sheet and sends the sound.

Claims

1) a kind of baby's urinating buzzer is characterized in that comprising circuit box, conductive clamp and urine wet sensor; Conductive clamp is connected with circuit in the circuit box by lead, and conductive clamp and urine wet sensor are clamped and connected mutually; Circuit box is formed at the bottom of by lid, box, interconnects by screw, and circuit board that is made of control circuit, phonation circuit and the sound-producing device that is made of the buzzing sheet are housed in the box.

2) by the described baby's urinating buzzer of claim 1, it is characterized in that urine wet sensor is made of softish insulator and two softish electric conductors; Article two, softish electric conductor is fixed on a side of flexible insulation body, or is individually fixed in the both sides of softish insulator.

3) by claim 1 or 2 described baby's urinating buzzers, it is characterized in that softish insulator is plastic sheeting or paper, softish electric conductor is two strip metal paper tinsel or metal films.

4), be provided with T type projection and two L type projectioies that are symmetrical in T type projection in it is characterized in that at the bottom of the box of circuit box by the described baby's urinating buzzer of claim 1; Be shaped on the wiring board and T type projection and corresponding T type groove of L type projection and breach, and snap in corresponding T type projection and the L type projection by T groove and breach; Two button cell conducting strips on the circuit board lay respectively in the  type groove that T type projection and two L types convex to form, and link to each other with printed circuit; The buzzing sheet is loaded in the resonant cavity of lid; Resonant cavity sounding mouth is opened the side at circuit box, preferably drives one side in the termination; Locate by alignment pin, locating hole with lid at the bottom of the box, be connected with screw by screw base, screw hole; The battery cover that can take off is housed on the lid; The conductive spring leaf of two button cells polyphone during the battery cover inboard is equipped with and can be made at the bottom of the box.

5) by claim 1 or 4 described baby's urinating buzzers, it is characterized in that control circuit is made of urine wet sensor and crystal triode; One end of urine wet sensor links to each other with transistor base, and the other end links to each other with transistor collector; The colelctor electrode of audion links to each other with anode, and emitter stage links to each other with phonation circuit; Battery cathode links to each other with switch, and the switch other end links to each other with phonation circuit; The outfan of phonation circuit links to each other with the buzzing sheet; Phonation circuit and the available commercially available prod of buzzing sheet.

6), it is characterized in that constituting at the bottom of conductive clamp is by conductive clamp lid and conductive clamp by the described baby's urinating buzzer of claim 1; Conductive clamp lid with at the bottom of the conductive clamp by tightening up post and screw is connected; Two tighten up that clamping has spring leaf between the post, and one of spring leaf leans out conductive clamp, and the spring leaf middle part is bearing on the projection at the bottom of the conductive clamp; The termination of conductive clamp lid is embedded with the intermediate plate that cooperates with spring leaf; Conductive clamp has covered a movable tongue, a compression leg is arranged below the movable tongue; Two leads are connected with spring leaf with intermediate plate respectively, and draw from the wire guide of conductive clamp.

7) by the described baby's urinating buzzer of claim 5, it is characterized in that intermediate plate can be a sheet metal, also can be to constitute by two fixed side by side conducting strips.