JPH0746767Y2 - Air cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to an air cleaner used in a large internal combustion engine, and more particularly to a structure for improving workability when mounting an internal filter element.

<Prior art> Generally, in a vertically long air cleaner, an air inlet is formed on one side of the outer circumference of a cylindrical case, and an air outlet is formed in the upper middle part, and the inside of the case is divided into inner and outer circumferences. The filter element of 1 is housed, and the lower surface opening of the case is covered with a cover.

Further, the filter element and the cover are fixed by screwing a wing nut into a mounting bolt which is vertically provided from the inside of the case.

<Problems to be solved by the invention> The following problems have been pointed out because the above air cleaner is attached and detached from the lower side of the case when the filter element is replaced.

First, the filter element must be supported by hand when the wing nut is screwed into the case with the filter element accommodated in the case, and the air cleaner for buses and trucks in particular has a large size. However, since the weight is heavy, it is the current situation that it is difficult to support the filter element until the wing nut is completely fixed, and the workability during maintenance is poor.

The present invention solves the above-mentioned drawbacks, and an object thereof is to provide an air cleaner capable of holding a filter element inside a case even when the hand is released, in that position.

<< Means for Solving the Problem >> Therefore, the present invention includes a supporting wire whose both ends are supported by the outer peripheral portion of the case and whose lower end is bent in a U shape so as to be positioned at the opening of the case.

<< Operation >> According to the above configuration, if the supporting portion of the wire is located at the lower surface opening of the case with the filter element loaded, it abuts on the bottom portion of the filter element and supports it.

Therefore, the filter element does not fall out of the case even if the hand is released after this work.

<< Embodiment >> An embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 3 show a first embodiment of the present invention.

The air cleaner in the figure includes a vertically long cylindrical case 1 having a bottom opening, a cylindrical filter element 2 loaded inside the case 1, and a cover 3 for covering the bottom opening of the case 1.

An inlet pipe 4 constituting an air intake is provided on one side of the outer periphery of the case 1 so as to project therefrom. Further, on the top surface of the case 1, an outlet pipe 5 forming an air outlet having a center L1 at a position eccentric from the cylinder center L to the opposite side of the projecting direction of the inlet pipe 4 is parallel to the cylinder center L. Is projected on.

A bracket 6 protruding in an approximately V shape toward the inner bottom surface side of the case 1 is fixed to the inside of the case 1 of the outlet pipe 5 by welding or the like. A mounting bolt 7 is vertically provided coaxially with L1.

The filter element 2 is formed by folding a filter paper or the like in a pleat shape and rolling it into a chrysanthemum shape, a punching plate 9 fitted to the inner peripheral portion of the filter member 8, and fixed above and below the punching plate 9. 1 is an assembly including a ring-shaped upper end plate 10 and a disc-shaped lower end plate 11.

A mounting hole 11a for inserting the mounting bolt 7 is formed at the center of the lower end plate 11.

A pair of hinge brackets 12 are integrally projected on the lower peripheral portion of the case 1 by welding or the like, and both ends 14a of a supporting wire 14 are rotatably attached to each hinge bracket 12.

The supporting wire 14 is generally U-shaped and is bent in a substantially L-shape when viewed from the side, and the supporting portion 14b, which is the rotating end of the supporting wire 14, is formed in the lower surface opening of the case 1. It is formed so as to cross a part.

Further, the hinge bracket 12 is formed with a click stopper portion 12a projecting laterally, and in the state where the wire 14 is rotated upward, the vicinity of both ends 14a of the click stopper portion 12a elastically rides over the click stopper portion 12a. As a result, the wire 14 is held in the upper position, and when the wire 14 is rotated downward from this state, the wire 14 also elastically jumps over the click stopper portion 12a and the supporting portion 14b thereof is positioned in the lower surface opening of the case 1. Retained.

Further, on the bottom surface of the cover 3, a support portion 14 for the wire 14 is provided.
A clip piece 15 for supporting and fixing b in a held state is integrally fixed by welding or the like.

In order to load the filter element 2 into the case 1 of the air cleaner having the above-described structure, the filter element 2 is loaded from the lower surface of the case 1 into the inside with the cover 3 removed. With the filter positioned above, the center of the filter element 2 is inserted through the mounting bolt 7 and pushed into the case 1. When the wire 14 is rotated downward in this state, the wire support portion 14b contacts the bottom surface of the filter element 2 and holds it as shown in FIG.

Therefore, even if the filter element 2 is released in this state, it does not come off from the case 1. Then, if the wing nut 16 is screwed into the mounting bolt 7, the filter element 2 will be completely inside the case 1. Can be fixed in position.

In the fixed state, the filter element 2 forms a wide crescent-shaped space A on the inlet pipe 4 side and is fixed in an eccentric state with respect to the case 1.

After that, the wire 14 is again rotated upward, the cover 3 is mounted on the case 1, and then the wire 14 is rotated downward to support the bottom surface of the cover 3. In this state, the butterfly is attached to the lower protruding end of the mounting bolt 7. If the nut 17 is screwed in, the cover 3
Is also fixed.

In the fixing completed state, the supporting portion 14b of the wire 14 is held by the clip piece 15, so rattling due to vibration during traveling of the vehicle can be prevented.

4 and 5 show a second embodiment of the present invention.

In the drawing, a supporting groove portion 20 is formed by folding back around the lower opening of the case 1, and both ends 21a of a supporting wire 21 are detachably engaged with the supporting groove portion 20. The support wire 21 is formed in a substantially U-shape in the same manner as described above, and the support portion 21b at the center thereof crosses a part of the opening of the case 1,
The bottom surface of the filter element 2 is supported as described above.

In this embodiment, the structure is further simplified as compared with the first embodiment. Further, when the cover 3 is fixed, the supporting wire is
Since the supporting portion 21b of 21 is positioned on the bottom surface of the cover 3 by spring elasticity, it is possible to suppress rattling due to vibration or the like as in the first embodiment.

<Effect of Device> As described in detail in each of the above embodiments, in the air cleaner according to the present invention, the supporting portion of the supporting wire is positioned at the lower opening surface of the case while being loaded inside the case. Thus, the filter element can be held at that position even when the hand is released, and the subsequent screwing operation of the nut can be easily performed.

Therefore, according to the present invention, it is possible to easily and surely perform the replacement work of the filter element in a large air cleaner used for a large internal combustion engine such as a bus and a truck, and it is possible to improve serviceability.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 show a first embodiment of the present invention, and FIG. 1 is a side view of an air cleaner according to the present invention, FIG.
FIG. 3 is a perspective view showing a state during assembly, FIGS. 4 and 5 show a second embodiment of the present invention, FIG. 4 is a side sectional view, and FIG.
The figure is a perspective view showing a state during assembly. 1 ... Case, 2 ... Filter element 3 ... Cover 4 ... Inlet pipe (air intake) 5 ... Outlet pipe (air outlet) 6 ... Bracket, 7 ... Mounting bolt 8 ... Filtration member, 9 ... Punching plate 10 ... Upper end plate 11 ... Lower end plate 12 ... Hinge bracket 14, 21 ... Support wire 14a, 21a ... Both ends 14b, 21b ... Support part 16, 17 ... Wing nut 20 ... Support groove part

Claims (1)

[Scope of utility model registration request] 1. A cylindrical case having an opening on the lower surface having an air inlet on one side of the outer periphery and an air outlet on the upper side, a mounting bolt suspended inside the case, and housed inside the case. A cylindrical filter element whose lower center is fixed to the mounting bolt via a wing nut, and a cover which is mounted on the lower surface opening of the case and fixed to the lower end of the mounting bolt via a wing nut. An air cleaner comprising: an air cleaner having both ends supported by an outer peripheral portion of the case, and a supporting wire bent in a U shape so that a lower end thereof is positioned in an opening portion of the case.