CN2276663Y

CN2276663Y - Pressure switch for dust remover

Info

Publication number: CN2276663Y
Application number: CN 96241887
Authority: CN
Inventors: 孙宝起
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-08
Filing date: 1996-11-08
Publication date: 1998-03-18
Anticipated expiration: 2006-11-08

Abstract

The utility model relates to a suction cleaner and a similar device, which is a device for controlling the switching and the disconnecting of a circuit. The utility model is still composed of a conducting strip and two contacts, and a positive voltage cavity, a negative voltage cavity and an isolation diaphragm element, wherein, the isolation diaphragm is arranged between the positive voltage cavity and the negative voltage cavity; the conducting strip which is arranged at the side part of the negative voltage cavity is fixed on the isolation diaphragm; the two contacts are respectively fixed at the relevant position of the negative voltage cavity which is provided with air holes. A pressure transducer type switch is made. The utility model has the advantages of simple structure, and sensitive and reliable operation. The utility model is especially suitable for a dust full display circuit of the suction cleaner.

Description

The dust catcher pressure switch

The utility model relates to dust catcher and similar device, in order to a kind of device of control circuit connection, disconnection.

Dust catcher is typically provided with full dirt display unit for protecting motor, preventing overlond running, promptly when storage dirt cloth bag has been store full dust, discarded little thing, can show its state automatically.As, with mechanical structure change color or letter symbol, represent full, with luminous or phonation circuit warning etc.No matter adopt which kind of mode to show full dirt, its key is selecting for use of control device, and the deficiencies in the prior art part is: mechanical structure exists sensitivity low, the drawback of poor reliability.Adopt luminous or phonation circuit shows that storage dirt cloth bag store full dust, discarded little thing, owing to there is not suitable control device, often cause circuit structure complexity, cost height, the functional reliability that has is also low, reports by mistake easily, fails to report.The switch of common control circuit break-make, as toggle switch, key switch and so on, though simple in structure, mainly constitute by conducting strip and two contacts, it needs artificial external force to go to change the position of conducting strip, can not be used for automatic conversion.

The purpose of this utility model is to avoid weak point of the prior art, and a kind of simple structure is provided, and work is sensitive, reliable, is particularly suitable for the dust catcher pressure switch product that full dirt shows.

Can take following technical scheme to realize purpose.The dust catcher pressure switch still be made of conducting strip and two contacts, but it has malleation cavity, vacuum cavity, the isolation diaphragm member; Isolation diaphragm is installed between the positive and negative pressure cavity, conducting strip in the negative pressure cavity side, be fixed on the isolation diaphragm, two contacts are separately fixed at the corresponding position of vacuum cavity, vacuum cavity is provided with pore.Make the pressure sensing type switch.

This switch is installed in the dust catcher, because it just, vacuum cavity is separated into two parts of mutual sealing by isolation diaphragm, the malleation chamber is communicated with atmosphere, when the pore of vacuum cavity with after the negative pressuren zone of dust catcher is connected, under the pull of vacuum effect, negative pressure in the switch increases, isolation diaphragm moves to the negative pressure direction, and dust in the size of negative pressure value and the storage dirt cloth bag, the storage capacity of discarded little thing is directly proportional, promptly when negative pressure reaches certain value, the conducting strip that is fixed on the isolation diaphragm contacts with two contacts simultaneously, connect circuit, realization pressure sensing control makes the circuit of its effect or signal lamp glittering or send the buzzing alarm sound, reminds owner to change storage dirt cloth bag.

Under the prerequisite that satisfies the said structure requirement, as for the specific constructive form of whole pressure switch, each member, size; The negative pressure value of switch motion is to make fixedly, and still adjustable grade all can be taken the circumstances into consideration to set according to using needs.They are to the not influence of serviceability of this pressure switch.

The relative prior art of the technical program has following advantage and effect:

Simple in structure, work is sensitive, reliable, and the dust-full display circuit that is particularly suitable for dust catcher uses.It can be made into serial pressure switch product, and pressure adjusting range: 1000Pa～25000Pa not only is suitable for dust catcher and uses, and also can be used for other all gases passage, changes the electronic device of turning circuit as pressure.

In conjunction with the accompanying drawings, execution mode is described in further detail the content of the technical program.

Fig. 1 is a kind of structural representation of dust catcher with pressure switch;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the left view of Fig. 2.

Dust catcher shown in the drawings pressure switch embodiment, it mainly is made of malleation cavity 8, vacuum cavity 7, isolation diaphragm 1, conducting strip 2 and contact 9 assemblings; Isolation diaphragm is installed between the positive and negative pressure cavity, conducting strip in the negative pressure cavity side, be fixed on the isolation diaphragm, the contact is installed in the corresponding position of vacuum cavity, vacuum cavity is provided with pore 6.

The dust catcher pressure switch also can be provided with pressure spring 3, pressure regulation nut 5 members, and the pressure regulation nut is connected with vacuum cavity with screw thread, and pressure spring is installed between isolation diaphragm and the pressure regulation nut.The negative pressure value size of switch motion so just can change by look nut and pressure spring and regulate the pressure of isolation diaphragm, left the turn nut, negative pressure value is corresponding reduces turn nut, the corresponding increase of negative pressure value to the right.More convenient in the use, flexible.

In order further to improve the serviceability of dust catcher with pressure switch, between pressure regulation nut and vacuum cavity, also can install O RunddichtringO 4 additional, prevent gas leakage, sealing effectiveness is better.

The result of use of present embodiment is good.

Claims

1, a kind of dust catcher pressure switch is made of conducting strip and two contacts, it is characterized in that it has positive and negative pressure cavity and isolation diaphragm member; Isolation diaphragm is installed between the positive and negative pressure cavity, conducting strip in the negative pressure cavity side, be fixed on the isolation diaphragm, the contact is installed in the corresponding position of vacuum cavity, vacuum cavity is provided with pore.

2, dust catcher pressure switch as claimed in claim 1, it is characterized in that: it also is provided with pressure spring, nut component, and the pressure regulation nut is connected with vacuum cavity with screw thread, and pressure spring is installed between isolation diaphragm and the pressure regulation nut,

3, dust catcher pressure switch as claimed in claim 2 is characterized in that: the O RunddichtringO is housed between pressure regulation nut and vacuum cavity.