JPS58137426A - Air cleaner - Google Patents

Abstract

PURPOSE:To prefectly eliminate the forgetting of manipulation or error operation, by mounting a release switch in the casing of an air cleaner to relate the detachment of a filter body and the manipulation of the release switch. CONSTITUTION:A release switch 5 is interposed between an electric circuit and a power source 6 and mounted within an air cleaner 1. The air cleaner 1 is constituted by mounting a filter body 14 to the bottom part in the casing 2 having an inlet pipe 10 and an outlet pipe 11 through a packing and has a gap between the casing 2 and the filter body 14. A negative pressure switch 2 is attached to the outlet pipe 11 provided to the purified side of the air cleaner 1 and, when the air passing resistance of the air cleaner 1 reaches a predetermined value and the negative pressure in the outlet pipe 11 is increased, a contact is closed. In addition, a relay 4 consists of an electromagnet M and switches SW1, SW2 closed by the magnetic force thereof and relates the detachment of the filter body with the manipulation of the release switch.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is for use in internal combustion engines and prevents clogging! llf related to air cleaners that offer rewards.

The filter body of this air cleaner becomes clogged with dust during use, resulting in an increase in ventilation resistance and a decrease in intake air intake. Therefore, it is recommended that the device be cleaned or replaced after a certain period of use, and a warning indicator light is installed to let you know when it is time to clean it or replace it.

This method utilizes the negative pressure generated on the clean side of the air cleaner (the side leading to the internal combustion engine) when the front airflow resistance reaches a certain level, and when the negative pressure reaches a certain level, A closing negative pressure switch (biased toward open) is provided in the drowsiness circuit, and when it is closed, an indicator light in the circuit lights up to issue an alarm.

By the way, after the negative pressure becomes large and the alarm state occurs, if the rotation of the internal combustion engine decreases, the negative pressure decreases and the negative pressure switch opens, but even in that state, the alarm needs to be maintained. For this purpose, a separate holding circuit is formed, and even if the negative pressure switch is opened, the electromagnet in the holding circuit prevents the indicator light circuit from turning off (this is called a fully consuming type).
The circuit will be described later with reference to FIG. ). Therefore, once the indicator light lights up, it will continue to light up even if the internal combustion engine is stopped, the air cleaner Fifi body is removed for cleaning or replacement, and even if a filter body is installed. A holding circuit release switch (push button type, corresponding to 5 in No. 2 Y!J) is provided in the circuit. This switch is normally closed and can be opened by operation Temporarily open, normally removed fc
After reinstalling the filter, turn off the indicator light and return to the original state.

In this case, even though the driver forgot to clean it, when the gX understands that it has been cleaned, the light on the front is illuminated while driving, so the driver assumes that he forgot to operate the release switch and tries to operate the release switch. conduct. If this happens, the clogged filter body will continue to be used fL, and the indicator light will not light up at low engine speeds, so the internal combustion engine will operate in a state where there is a lack of intake air.

Next, as mentioned above, if the indicator light stays on even while the filter is being removed, it will be a waste of time and waste, so in order to avoid this, operate the release switch before removing the filter. All is well. However, if you forget to clean or replace it after doing so, the same result as described above will occur when the internal combustion engine is operated at low speed.

Next, a non-consumption type, which has improved current consumption in the above-mentioned type, will be explained. This is Jitsugan 56-1293
3 (No. 1 [Air cleaner filter clogging alarm device]), which has already been applied for, has a lighting l!ll! VC11 pressure switch between the 1st path and the power supply, and a key switch for internal combustion engine operation\r iM row As a means for keeping the indicator light lit, the on/off switch of the indicator light is mechanically engaged in the closed state.Therefore, when the indicator light is turned on, negative pressure is applied afterwards. The indicator light remains lit even when the temperature decreases, but when the key switch is opened to stop the internal combustion engine, the indicator light goes out.However, in that state, the number of lighting times w1 is not maintained, so the yp When you close the key switch after cleaning, the indicator light will turn on. Therefore, another electromagnet is required to release the mechanical lock of the indicator light open/close switch, and the electromagnet is connected to the release switch in the middle. connected to the power supply, and the release switch is always on.
When the filter is in the open state, the release switch is temporarily closed after replacing the filter to release the mechanical lock.

By the way, if you forget to operate the release switch after cleaning the temporary filter and then restart the engine, the indicator light will turn on and the cleaning of the filter will be disabled in operation 8. I end up thinking that I haven't done it.

In any of the above-mentioned devices, removing the temporary body and operating the release switch are separate tasks, and if either one is forgotten, it will cause inconvenience.

The present invention improves the above-mentioned points by installing a release switch inside the casing of the air cleaner so that the removal of the filter body is associated with the operation of the release switch. A release switch is installed in the gap between the air filter and the bottom of the air cleaner casing, and the release switch opens (or closes) automatically when the filter is removed.
, and by reinstalling it, it closes in the same way (my father made it so that open > VC).

Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, the air cleaner 1 has an inlet vibrator ++1 and an outlet vibrator I11, and a p free body 14 is attached to the bottom of the casing 12 through a packing 13, and its 5
- have a gap between them; The negative pressure switch 2 is attached to the outlet vibe H, which is the clean side of the air cleaner 1, and
When the llT1 air resistance of J-+l reaches a predetermined value and the negative pressure inside the exit vibe becomes high, the contact is closed. FIG. 2 is an electric circuit diagram of the consumption-type warning indicator lamp and the holding unit, in which the indicator lamp 3 gives a warning to the 1st shift of the engine, and the relay 4 applies magnetic force when energized. Switch 8WI SW that closes due to the generated electromagnet M and its magnetic force
2 (biased toward opening), and an electromagnet M
is the negative pressure switch 2, the switch 8W+ is connected in series with the indicator light 3, and the switch SW2 is connected in parallel with the negative pressure switch 2.
, it is connected. Interposed between this circuit and the power source 6 is a release switch 5, which is mounted inside the air cleaner 1.

The details of the release switch 5 are as shown in FIG. 3.4, and in the case of the consumption type, in FIG. ) is formed, and two terminals 31 and 32 extending in the axial direction are embedded in this threaded portion 3°, and one of the terminals 31 is further connected to the housing 2 (l
It extends inward to form an elastic tangential and imaginary 3-piece 3 whose tip is bent. The lid 21 has a hole in the center (4 holes are provided, but σ]).
A protruding piece 36 extends axially from the end face of the metal plate to one side to form an eave, and a 2#1 rod-shaped body is planted in the center of the other disc part to form a contact point 37. . Collar portion 3 of mover 22
5 and the bottom of the casing 2 ( ) is interposed, and the movable element 22 is pushed outward.
I'm feeling sick. The central hole 3 of the lid 21 is inserted into the protruding piece 36. t
It protrudes to the outside through iS1. Therefore, although not shown in the drawings, when the filter body 14 is removed, the HXI
iJ mover 22 is pushed outward by spring 23 11;
Contacts 33, 37 will be spaced apart. In addition, the terminal 32
The contact point 37 is connected to the conducting wire. The state in which the release switch 5 is attached to the air cleaner 1 is as shown in Figure 1.
The threaded part 3 is inserted into the opening 15 provided at a position facing the end face of the
() is inserted and fixed with nut +611. In this state, the lid 2I is separated from the end surface of the filter body 14.

The tip of the protruding piece 36 hits the end face of the filter body 4, and the contacts 33 and 37 come into contact as shown in the figure, and the spring 23 of the movable element 22 is pressed to position it inside the filter body 20. 1]. It should be noted that the release switch f°5 is made of old metal with no wires other than both contacts 33 and 37 and terminals 31 and 32.

Dust-containing air enters from the inlet vibrator L (+) of the air cleaner 1, and the dust is filtered and purified by the air cleaner P14, and the air is sucked into the engine V from the outlet vibrator +1.
As a result, when the ventilation resistance of the filter body 7 exceeds a predetermined value, the negative pressure switch 2 closes, and the electromagnet MK constant current flow 1 switch 8W18W2 of the relay 4 closes and the indicator light 3
lights up. The engine load and tachometer drop, and the engine stops.
Even if the negative pressure switch 2 is opened, a constant current flows through the electromagnet MK through the switch SW22 of the relay 4, and the lighting is maintained. When the engine body 14 is removed for cleaning after stopping the engine, the ij'J bracket 22 moves due to the force of springs 2 and 3, and the contacts 33 and 37 are separated and opened, causing a flow to the electromagnet M of the relay 4. The current is cut off, the switch SW2 is opened, the initial state is restored, and the holding function is released. In this state, when 41& of p week holiday 14 is performed and the writing filter holiday is attached, the protruding piece 36 is attached to the end surface of the filter body 14 at 111]-g n
, the contacts 33 and 37 are in contact and the normal state is established.

Next, a further embodiment of the non-eraser type 9 will be explained with reference to FIG. The release switch 5' is opened and closed in the opposite way to that in the first embodiment, and a conductor rod is planted in the center of the disc part of the mover 22' to form a contact point 47'. ing. The state in which the release switch 5' is mounted on the air cleaner is as shown in FIG.
．． 37' are separated, and the mover 22' is connected to the spring 23 (!
- It is compressed and placed in the inner part of the body 2o. In FIG. 4, the same components as those in the first embodiment are given the same numbers.

When the filter body 14 is removed for cleaning after stopping the engine, the force of the spring 23 moves the movable element 22' to the I-contact 33.3.
7' is contacted and closed, and the electric current flows through the electromagnet fL, which completely releases the mechanical maintenance of the indicator light open/close switch, and the indicator light open/close switch is opened, returning to the initial state and releasing the holding function. Sanru. In this state, when the filter body 9-14 is cleaned and the filter body 14 is attached again, the protrusion piece 36 is pushed by the surface of the Pd body 1414M, and the contact point 33.37'
is in a state where the distance is 1 - full.

As described above, according to the air cleaner of the present invention, the release switch is operated at the same time as the filter body is removed for cleaning.
Or, there will be no erroneous operation, and when the engine is restarted, d:,
Depending on whether the Cloth Bona J is lit or not, you can reliably judge whether or not the F + sieve body is being cleaned.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an air cleaner according to the invention. The 21st bacterium is a clogging 1 report - Awake circuit diagram. Figures 3 and 4 are the steps 71. FIG. 2 is a cross-sectional view of the pulp of i@l according to the second embodiment of the present invention. l...Air cleaner 12...Casing 14.
・・Filter body 2o-・Casing 2! ...Lid 22.2
2'...Movable 2r 2t...Spring 33...
Contact point 36/Protruding piece 37.37'... Contact point % Extenuating applicant Tsuchiya Seisakusho Co., Ltd.-111- JP-A-58-13742G (4) Procedural amendment (formality) Commissioner of the Japan Patent Office Kazuo Wakasugi of the case 1 Display Patent Application No. 20220 of 1982 2 Name of Invention Air Cleaner 3 Relationship to the Amendment Person Case Patent Applicant Postal Code 170. Telephone: 03 (984) 3131 May 7, 1984 (Delivery date: May 25, 1988) Amend "10 names" to "1 name of invention" on the second line of page 1 of the specification. 175-

Claims (1)

[Claims] 1 between its bottom and inside the air cleaner casing! The filter body is attached to the casing, the bottom of the casing is fixed inside the casing, the movable element is housed inside the casing while being biased outwardly by a spring, and a protruding piece integrated with the movable element is housed inside the casing. F1 penetrates the lid of the housing and protrudes outward, and its tip abuts against the end surface of the p-shaped end, thereby positioning the mover inside the housing.F1 A contact is fixed inside the housing. The air cleaner has a contact fixed to the movable element correspondingly.