JPS6235884Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air cleaner device for an engine.

EnginesIn particular, in vehicle engines mounted on relatively small vehicles such as forklifts,
In order to make the engine more compact, the air cleaner device has to be placed in a place with relatively little work space.As a result, it is generally difficult to replace the element, and there is a strong need to develop an air cleaner device that allows for easy element replacement. It was wanted.

A known example of an air cleaner device intended to meet such demands is Utility Model Application Publication No. 55-116870.
There is something like the one shown in the publication. In this known air cleaner device, a flexible connecting portion is provided in the intake passage pipe continuous to one side of the element case to allow the element case to rotate freely, and the element case is normally stored in the air cleaner chamber on the side of the engine body. When replacing the element, the element case is rotated and pulled out of the air cleaner chamber to a position with sufficient work space. Therefore, it is possible to simplify the element replacement work while promoting the downsizing of the engine.

However, this known air cleaner device has
When storing the element case, the element case is fixed to the engine side using fixing members such as screws in a non-rotating state.
When replacing the element, fixing members such as screws must be attached and removed, which poses a problem in terms of workability throughout the element replacement work.

In view of the above-mentioned problems with conventional engine air cleaner devices, the present invention aims to improve work efficiency by easily replacing the element with one touch without having to attach or remove fixing members such as screws. It was made for the purpose of providing an engine air cleaner device, and
An element case having an element outlet is rotatably attached to a support base such as an engine body using an appropriate hinge mechanism, and a cap is attached to the element outlet of the element case to cover the element outlet. The cap is slidably and detachably attached to the element case, and is provided with an elastic member that presses the cap in the element attachment/detachment direction to securely hold the cap and the element case.When the cap is slid to one side, the element case is Rotation is restricted by an appropriate fixing member provided on the support base side through the cap, and the element is positioned in a non-rotating state, and when it is slid to the other side, the element is fixed by the fixing member through the cap. The present invention is characterized in that the restriction on rotation of the case is released, and the element can be attached and detached when the element case is rotated.

Hereinafter, the engine air cleaner device of the present invention will be explained based on the embodiments shown in the attached drawings. Figures 1 and 2 show the forklift engine air cleaner device _Z1 according to the first embodiment of the present invention. It is shown. This air cleaner device Z ₁ includes an intake pipe 1 fixedly disposed along an engine body 10.
It is interposed in the middle part of. This air cleaner device Z ₁ is formed into a bottomed cylindrical shape with a peripheral wall 2e and a bottom plate 2d, and has an open end 2a as an element outlet 2a.
An element case 2 having an air intake outlet 26 formed in the center of the bottom plate 2d, a large diameter cylindrical portion 3a slidably inserted into the element outlet 2a of the element case 2, and the large diameter cylindrical portion 3a. A cap 3 which is integrally formed in a stepped cylindrical shape with a small diameter cylindrical part 3b continuous to a cylindrical part 3a, and has the small diameter cylindrical part 3b as an intake inlet 25, and an element housed in an element storage chamber 20 of an element case 2. 4, and an element biasing spring 5 (elastic member) that is attached inside the cap 3 and presses the element 4 in the axial direction and presses the cap 3 toward the intake pipe 1. It is arranged coaxially with the intake pipe 1.

The element case 2 has its intake outlet 26 side fixedly connected to the intake downstream pipe end 1c of the intake pipe 1 via a bellows member 24 having appropriate flexibility, and at a position near the bottom surface 2d of the peripheral wall 2e. A pivot bracket 12 protruding outward from the engine body 10 is rotatably connected to a fixed bracket 11 provided on the engine body 10 side by a hinge mechanism S, which will be described in detail later. Therefore, as shown in FIG. 1, the element case 2 has two rotation positions: a rotation position where its axis coincides with the axis of the intake pipe 1 (hereinafter, this rotation position will be referred to as a first rotation position), and a second rotation position. As shown in the figure, it can rotate within a rotation range of angle θ at a rotation position where its axis intersects with the axis of the intake pipe 1 (hereinafter, this rotation position is referred to as the second rotation position). .

In addition, in this embodiment, in order to position the element case 2 at the two rotational positions and maintain the posture at the rotational position, the hinge mechanism S is structured to be rotated step by step with moderation. It is said that That is, as shown in FIG.
The cross-sectional shape of the pivot shaft 13 fixed to the first side is made into a circular shape, while the bearing member 14, which is mounted in the bearing member mounting hole 15 of the pivot bracket 12 and pivotally supports the pivot shaft 13, has a moderate shape. The bearing hole 17 is made of an elastic material such as elastic rubber, and the bearing hole 17 is made of an elastic body such as rubber.
The first center line 1 intersects at an angle θ through the center of 7.
_first recesses 16a, 16a into which the long axis side protrusions 13a, 13a of the pivot shaft 13 can be fitted, respectively, at two opposing positions on the center lines _{1 and} 2 and across the center of the bearing hole 17; and the second recess 1
6b, 16b, and is located between the first recess 16a and the second recess 16b which are adjacent to each other at an angle θ, and protrudes toward the center from the rotation locus of both protruding ends 13a, 13a of the pivot shaft 13. When the pivot shaft 13 and the bearing member 14 rotate relative to each other, they are appropriately elastically deformed and the pivot shaft tips 13a, 13a are moved into the first recess 1.
It is formed into a deformed hole having convex portions 18, 18 that can be climbed over from the 6a side to the second recess 16b side or from the second recess 16b side to the first recess 16a side. Therefore, element case 2 is the first
When set at the rotation position, both protruding ends 13a of the pivot shaft 13, as shown by solid lines in FIG.
13a is the first recess 16a, 16a of the bearing member 14
When the element case 2 is rotated in the direction of the arrow B from the first rotation position, the bearing member 14 is moved in the direction of the arrow B together with the pivot bracket 12. direction, both protruding ends 13a, 13a of the pivot shaft 13 ride over both convex parts 18, 18, respectively, and reach the second concave part 16.
b, 16b and acts to hold the element case 2 in the second rotation position.
In addition, in this embodiment, the element case 2
The element case 2 is placed between the engine body 10 and the engine body 10.
A case biasing spring 9 is provided to always bias the element case 2 to rotate in the direction of the arrow B, and when the element case 2 is set at the first rotation position as described later, the cap 3 and the intake pipe 1 move along the arrow A-B. When the engagement in the direction is released, the element case 2 can be automatically positioned from the first rotation position to the second rotation position by the spring force of the case biasing spring 9. However, in other embodiments of the present invention, this case biasing spring 9 can be removed. in this way,
When the case biasing spring 9 is removed, the element case 2 is held in its respective postures at the first rotation position and the second rotation position by the stepwise rotation function of the hinge mechanism S.

The element 4 is formed into a thick-walled cylindrical shape,
It is mounted within the element case 2 and coaxially with the element case 2, with its one end 4a held by an element receiver 8 fixed to the bottom plate 2d of the element case 2. Further, the other end 4b of the element 4 is exposed to the outside from the element outlet 2a, and the element 4 is attached or removed from the element outlet 2a.

The cap 3 is slidably inserted into the element outlet 2a of the element case 2 with its large diameter cylindrical portion 3a facing the element case 2 side. Inside this cap 3, when the cap 3 is inserted into the element outlet 2a, the outer end 4b of the element 4 installed in the element case 2 is pressed in the axial direction. An element biasing spring 5 is attached which elastically supports the element 4 between it and the element receiver 8 and which acts to push the cap 3 outward from the element outlet 2a. This element biasing spring 5 has one end 5
the first spring receiving member 6 fixed to the cap 3;
On the other hand, a second spring receiving member 7 which also serves as a receiving member for the element 4 is fixed to the other end 5b, and when the cap 3 is removed from the element case 2 as shown in FIG.
The element biasing spring 5, the first spring receiving member 6, and the second spring receiving member 7 are removed from the element case 2 side together with the cap 3.

In addition, the cap 3 is configured such that the tip 3d of the small diameter cylindrical portion 3b is tapered toward the tip.
An annular abutting surface 3 whose outer circumferential surface of d is inclined at an appropriate angle
It is set as e. On the other hand, the intake upstream pipe end 1a of the intake pipe 1, which faces the abutment surface 3e, expands the pipe end appropriately and brings its front surface into close contact with the abutment surface 3e on the side of the cap 3. The abutment surface 1b is annular and inclined so as to be able to abut against each other. Therefore, when the element case 2 is set to the first rotation position, the cap 3 protrudes outward due to the spring force of the element biasing spring 5, and its abutting surface 3e contacts the intake pipe 1 side. It abuts against the mating surface 1b, and the intake pipe 1 and the intake inlet 25 of the cap 3 are connected. in this case,
Abutment surface 3e of cap 3 and abutment surface 1 on intake pipe 1 side
b overlap in the radial direction, by appropriately setting the spring force of the element biasing spring 5, the rotation of the element case 2 due to the spring force of the case biasing spring 9 can be restricted. Thus, the rotational position of the element case 2 can be maintained at the first rotational position. In addition, this cap 3 is indicated by a chain line (numeral 3') in Fig. 1.
The element is slid in the direction of the arrow R against the spring force of the element biasing spring 5, and the abutment surface 3e on the cap 3 side and the abutment surface 1b on the intake pipe 1 side are separated appropriately in the axial direction. This makes it possible to rotate the element case 2 from the first rotation position to the second rotation position. Incidentally, the intake pipe 1 is fixed to the engine body 10 side by a support base 21 etc. attached to the engine body 10 side.

Next, to explain the procedure for replacing the element 4 in this air cleaner device _Z1 , during normal operation, the element case 2 is set to the first rotation position as shown by the solid line in FIG. The abutting surface 1b of the side pipe end 1a and the abutting surface 3e of the cap 3 abut each other in a coaxial position, and the intake pipe 1, element case 2, and cap 3
They form a series of intake passages. In this state, the element case 2 element outlet 2a, the large diameter cylindrical portion 3a of the cap 3, and the
The abutment surface 3e of the intake pipe 1 and the abutment surface 1b of the intake pipe 1 overlap each other in the radial direction, and the spring force of the element biasing spring 5 between the intake pipe 1 and the cap 3 acts. , the element case 2 is restricted from rotating in the direction of arrow A-B, and is maintained in the first rotation position.

When removing the dirty element 4 from the element case 2 and replacing it with a new one, the worker first manually rotates the cap 3 in the direction of the arrow R.
1, the cap 3 is pressed in the direction indicated by the dashed line (symbol 3') into the element case 2, and the abutment surface 3e of the cap 3 and the abutment surface 1b of the intake pipe 1 are separated in the axial direction, thereby insulating the cap 3 from the intake pipe 1. When the cap 3 and the intake pipe 1 are thus insulated, the rotation restricting force of the element case 2 in the direction of arrow B is released. Therefore, if the worker pulls the element case 2 in the direction of arrow B while keeping the cap 3 pressed in the direction of arrow R, the element case 2 will rotate in the direction of arrow B.
The operating force of the operator and the case biasing spring 9
The spring force of the two ends 13 of the pivot shaft 13
The bearing member 14 is then rotated in the direction of arrow B until the first and second recesses 16b, 16b of the bearing hole 17 of the bearing member 14 are fitted into the second recesses 16b, 16b of the bearing hole 17 of the bearing member 14, and the bearing member 14 is automatically set to the second rotation position (see FIG. 2).

When the element case 2 is set to the second rotational position, the cap 3 is pulled out from the element outlet 2a of the element case 2, as shown in FIG. 2, and the element 4 is exposed to the outside from the element outlet 2a. Thereafter, the operator inserts his/her hand into the element case 2 through the element outlet 2a, takes out the dirty element 4, and installs a new element 4 into the element case 2 in its place. After the new element 4 is installed in the element case 2, the cap 3 is again inserted into the element outlet 2a to cover the element outlet 2a with the cap 3, and the outer end surface 3f of the cap 3 is closed. The rotation trajectory is intake pipe 1
Push the element case 2 in the direction of arrow R until it is positioned outward from the end 1a of the element case 2.
is rotated in the direction of arrow A against the spring force of the case biasing spring 9 to set the element case 2 to the first rotation position. At this time, both protruding ends 13a, 13a of the pivot shaft 13 are connected to the first recess 16 of the bearing hole 17.
By fitting into the elements a and 16a, the element case 2 is reliably positioned at the first rotation position.
After the element case 2 is set to the first rotation position, when the pressing force of the cap 3 is released, the cap 3 protrudes outward (in the direction of arrow L) by the spring force of the element biasing spring 5. forced,
The abutment surface 3e of the cap 3 abuts the abutment surface 1b of the intake pipe 1 again, and the intake pipe 1, element case 2, and cap 3 communicate with each other, and the air cleaner device _Z1 operates normally as shown in FIG. It is returned to the operating state position. With this, the replacement work of the element 4 is completed.

As mentioned above, in the air cleaner device _Z1 of the first embodiment, when replacing the element 4, the operator presses the cap 3 by hand and slides it in the axial direction to engage the intake pipe 1 and the cap 3. Since the element 4 can be prepared to be taken out simply by the simple operation of removing it, this is not the case in the case of the air cleaner device of the above-mentioned known example in which the solid member must be attached or detached when replacing the element. Compared to this, the work efficiency of element replacement work is further improved.

Moreover, the air cleaner device _Z1 of this first embodiment is as follows:
By using the intake pipe 1 fixed to the engine body 10 side as a fixed member for positioning the element case 2 in a non-rotating position to a rotational position where the element can be replaced, the number of parts can be reduced, the cost can be reduced, and the device can be reduced. We are trying to make it more compact.

In the air cleaner device _Z1 of the first embodiment, the spring force of the case biasing spring 9 is used to reduce the operating force when rotating the element case, but in other embodiments This case biasing spring 9 can also be removed.

Next, the air cleaner device of the second embodiment of the present invention
Z ₂ will be explained with reference to FIGS. 4 and 5. This air cleaner device Z ₂ has an element case 2 that is rotatable with respect to the engine body 10 via a hinge mechanism S, and a cap 3 that is rotatable with respect to the engine body 10. The element case 2 is slidably and removably attached to the element outlet 2a of the element case 2, and the element case 2 is positioned in a non-rotating state at the first rotating position by the intake pipe 1 via the cap 3, and the cap is The basic technical idea is to release the positioning action of the element case 2 by the intake pipe 1 via the intake pipe 1, set the element case 2 to the second rotational position, and attach and detach the element 4 in this state. Although this is the same as in the first embodiment, the mechanism for positioning the element case 2 via the cap 3 itself is different from that in the first embodiment. That is, the air cleaner device Z ₁ of the first embodiment
The element case 2 is brought into the non-rotating state via the cap 3 by the spring force of the element biasing spring 5 and the engagement force in the rotating direction between the abutting surface 3e of the cap 3 and the abutting surface 1b of the intake pipe 1. In contrast, the air cleaner device _Z2 of the second embodiment uses the fastening force between the intake pipe 1 and the cap 3 to position the element case 2 in a non-rotating state. . Element case 2 in air cleaner device Z ₂ of this second embodiment
To explain the positioning mechanism in detail, this air cleaner device _Z2 has an element case 2 as shown in FIG.
The cap 3, which is slidably and removably fitted onto the element outlet _2a , is attached to a bellows-shaped intake tube with a reinforcing spring that has an appropriate elastic restoring force in the axial direction and has appropriate rigidity in the bending direction. 2
3 (elastic member) to the intake upstream pipe end _1a of the intake pipe 1. cap 3
is always urged toward the element case 2 side (in the direction of arrow R) by the elastic restoring force of the intake tube 23, and during normal operation, that is, when the element case 2 is set at the first rotating position. At times, as shown by the solid line in FIG. 4, the elastic restoring force of the intake tube 23 overcomes the spring force of the element biasing spring 5, and the large diameter cylindrical portion 3 of the cap 3
The outer end surface 3 _h of _a is brought into contact with the outer end surface 22 a of an annular protrusion 22 formed on the peripheral wall 2 e of the element case 2 . In this state, the element case 2 is positioned in a non-rotatable state via the cap 3 at the first rotating position due to the rigidity of the intake tube 23. At this time, the intake pipe 1, the element case 2, the cap 3, and the intake tube 23 form a series of intake passages.

On the other hand, when replacing the element 4 with the element case 2 set to the second rotation position, the operator must manually push the cap 3 in the direction of arrow L against the elastic restoring force of the intake tube 23. Then, the cap 3 is removed from the element case 2, and then the element case 2 is rotated in the direction of arrow B and set to the second rotation position (see FIG. 5). In this case, the cap 3 remains connected to the intake pipe 1 via the intake tube 23. After replacing the element 4 with the element case 2 set at the second rotation position, set the element case 2 from the second rotation position to the first rotation position by reversing the above procedure. , the air cleaner device Z ₂ is returned to the normal operating state shown in FIG.

In this way, the air cleaner device Z ₂ of the second embodiment is different from the air cleaner device Z ₁ of the first embodiment in that when replacing the element, first the intake pipe 1 and the cap 3 are disengaged and the element case 2 is removed. After setting from the first rotation position to the second rotation position, two operations are required to prepare the element to be taken out, such as removing the cap 3 from the element case 2. The engagement and disengagement and the removal of the cap 3 can be performed in one operation, and the work efficiency in element replacement work is improved accordingly compared to the case of the air cleaner device _Z1 of the first embodiment.

Note that the other constituent members and their functions of the air cleaner device Z ₂ of the second embodiment are the same as those of the air cleaner device Z ₁ of the first embodiment.
Each member in FIGS. 1 and 5 is given the same reference numeral as each member in FIGS. 1 and 2, and detailed explanation thereof will be omitted.

In addition, in both the first and second embodiments, the intake pipe 1 fixed to the engine body is used as a fixed member for positioning the element case 2 in a non-rotating state via the cap 3, but in other embodiments of the present invention, a dedicated fixed member can be provided in place of the intake pipe 1 as this fixed member.

Next, to explain the effects of the present invention, the engine air cleaner device of the present invention has an element case that houses the elements rotatably and detachably attached to a support base such as the engine body using an appropriate hinge mechanism. On the other hand, the cap is slidably and detachably attached to the element outlet of the element case, and an elastic member is provided to press the cap in the element attachment/detachment direction. It is possible to position the element case in a non-rotatable state using a fixing member attached to the base side, or to release the restriction on rotation of the element case by the fixing member via the cap by sliding the cap in one direction. Moreover, since the element is configured so that it can be attached to and detached from the element case when the element case is rotating, the operator does not have to attach or detach fixing members such as screws when replacing the element. The element can be replaced easily and quickly by simply sliding the cap in a predetermined direction by hand, and as in the prior art example, when replacing the element, it is necessary to attach and detach fixing members such as screws. This has the effect of further improving work efficiency in element replacement work compared to cases where replacement work is required.

In addition, when the fixing member for positioning the element case in a non-rotating state through the cap is constructed of the intake pipe of the engine as described in claim 2 of the utility model registration claim, a dedicated member may be used as the fixing member. This has the practical effect of reducing the number of parts, making the device more compact, and reducing costs compared to the case where it is attached.

Furthermore, as described in claim 3 of the utility model registration, the hinge mechanism for rotatably attaching the element case to the support base side is configured to rotate in stages, and the hinge mechanism is rotated in stages. If the element case can be held at a predetermined rotational position by the rotation function, the rotational position of the element case can be more accurately and easily set at the predetermined rotational position, and the element can be easily attached and removed. This also has the practical effect of further improving the workability of element replacement work, such as making it easier to attach and detach the element without causing the element case to rotate inadvertently.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional views of an engine air cleaner device according to a first embodiment of the present invention, FIG. 3 is an enlarged view of a portion of FIG. 1, and FIGS. 4 and 5 are a second embodiment of the present invention. FIG. 2 is a longitudinal cross-sectional view of an engine air cleaner device according to an example. 1...Intake pipe, 2...Element case, 2a
...Element outlet, 3...Cap, 4...
Element, 5... Element biasing spring (elastic member), 10... Engine body, 11... Fixed bracket, 12... Pivoting bracket, 23...
...Accordion-shaped intake tube (elastic member).

Claims (1)

[Claims for Utility Model Registration] 1. While an element case having an element outlet is rotatably attached to a support base such as an engine body by an appropriate hinge mechanism, an element case having an element outlet is A cap that covers the element outlet is slidably and removably attached to the element case, and an elastic member is provided to press the cap in the element attachment/detachment direction and fix and hold the cap and the element case, and the cap When the element case is slid to one side, rotation of the element case is restricted by an appropriate fixing member provided on the support base side through the cap, and the element case is positioned in a non-rotating state. When the element case is in a sliding state, the restriction on rotation of the element case by the fixing member via the cap is released, and when the element case is in a rotating state, the element can be attached and detached. An engine air cleaner device comprising: 2 Utility model registration claim 1, in which a fixed member for positioning the element case in a non-rotating state via the cap is constituted by an intake pipe of the engine, and a series of intake passages are formed by the element case, the cap, and the fixed member. Air cleaner device for the engine described in Section 1. 3. A hinge mechanism for rotatably attaching the element case to the support base side is configured to rotate in stages, and the gradual rotation function of the hinge mechanism allows the element case to be held at a predetermined rotation position. An air cleaner device for an engine according to claims 1 and 2, which is capable of maintaining an attitude.