JP7030677B2 - Refueling port adapter - Google Patents

Description

The present invention relates to a fuel filler port adapter attached to a fuel filler port of a fuel tank in a working machine.

As a configuration around a fuel tank filler port in a working machine, for example, the one described in Patent Document 1 is already known. In this working machine (“passenger rice transplanter” in Patent Document 1), a cap is attached to the fuel filler port.

Further, a receiving seat overhanging inward is formed on the inner surface of the fuel filler port. A collar-shaped portion of the filter (“fuel filter” in Patent Document 1) is placed and supported on this receiving seat.

Japanese Patent No. 5739245

In the configuration described in Patent Document 1, it is necessary to remove the cap from the refueling port at the time of refueling work, but the removed cap may become dirty or lost. Also, when checking the condition of the filter, it is necessary to remove the cap and take out the filter from the fuel filler port. Therefore, it takes a relatively large amount of time and effort to check the state of the filter.

Moreover, when the filter is taken out by hand, fuel tends to adhere to the hand. Further, when the filter is taken out not by hand but by a taking-out tool, the work procedure tends to be complicated due to the use of the tool.

From the above, in the configuration described in Patent Document 1, the work efficiency of refueling work and checking the state of the filter tends to be poor.

An object of the present invention is to provide a refueling port adapter that improves the work efficiency of refueling work and checking the state of a filter.

The feature of the present invention is a refueling port adapter attached to a refueling port of a fuel tank in a working machine, which has an insertion portion into which a refueling tool can be inserted, and a housing attached to the refueling port and the insertion portion can be opened and closed. It is provided with an on-off valve configured to be urged to the closed side and a filter provided inside the housing at a position on the lower side in the lubricator insertion direction than the on-off valve . The housing is removable with the filter attached, and the filter is detachably fixed to the housing in a state of protruding downward from the lower end of the housing in the direction of inserting the fuel filler . It is in.

According to the present invention, the refueling work can be performed only by opening the on-off valve against the urging force of the on-off valve. In addition, the state of the filter can be easily checked by simply removing the housing from the fuel filler port. As a result, the work efficiency of refueling work and checking the state of the filter is improved.
In addition, according to this configuration, when the operator removes the housing from the fuel filler port, checks the condition of the filter, and determines that the filter needs maintenance or replacement, he grasps the protruding part of the filter. Above, the fixed filter can be removed from the housing. This makes it possible to easily perform maintenance and replacement of the filter after checking the state of the filter.

Further, in the present invention, it is preferable that the on-off valve is configured to be opened by being pushed by the refueling tool.

According to this configuration, the refueling tool can be inserted into the insertion portion without opening the on-off valve by hand. That is, since the operation of manually opening the on-off valve is not required, the refueling work becomes easy.

Further, in the present invention, the housing is configured such that the lower end portion of the housing is screwed and fixed to the outer peripheral portion of the fuel filler port, and the filter has the lower end portion of the housing as the outer peripheral portion. It is preferable that the fuel tank is screwed and fixed to the fuel tank so that the position is held while being inserted into the fuel tank through the fuel filler port .

According to this configuration, the connection between the housing and the fuel filler port can be screwed in and out, and the work efficiency of checking the state of the filter is improved .

Further, a feature of the present invention is a refueling port adapter attached to a refueling port of a fuel tank in a working machine, which has an insertion portion into which a refueling tool can be inserted, a housing attached to the refueling port, and the insertion portion. It is provided with an on-off valve that can be opened and closed and is configured to be urged to the closing side, and a filter provided inside the housing at a position lower than the on-off valve in the lubricator insertion direction. The housing has a first housing to which the on-off valve is attached and a second housing to which the filter is attached, and the second housing is attached to the fuel filler port. The first housing is detachably configured to and from the second housing.

According to this configuration, the filter can be easily visually observed by removing the first housing from the second housing while the second housing is attached to the fuel filler port. Therefore, it is possible to easily check the state of the filter while the second housing is still attached to the fuel filler port.

Further, in the present invention, an inner on-off valve capable of opening and closing the insertion portion and urged on the closing side is provided at a position between the on-off valve and the filter, and the inner on-off valve is provided. Is preferably configured to be opened by being pushed by the refueling tool.

According to this configuration, the insertion portion has a double valve structure by the on-off valve and the inner on-off valve. This makes it easy to reliably prevent rain, dust, etc. from entering the insertion portion at times other than refueling work.

Further, according to this configuration, the refueling tool can be inserted into the insertion portion without opening the inner on-off valve by hand. That is, since it is not necessary to manually open the inner on-off valve, the refueling work becomes easy.

It is a left side view of a walking type work machine. It is a vertical sectional left side view which shows the structure of a fuel filler port adapter. It is a vertical sectional left side view which shows the structure of the fuel filler port adapter in 1st Embodiment.

A mode for carrying out the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of the arrow F shown in FIGS. 1 to 3 is referred to as “front” and the direction of arrow B is referred to as “rear”. Further, the direction of the arrow U shown in FIGS. 1 to 3 is "up", and the direction of the arrow D is "down".

[Overall configuration of walking work machine]
As shown in FIG. 1, the walking type working machine A (corresponding to the “working machine” according to the present invention) exemplified in the present embodiment includes a machine frame 1, an engine 2, a fuel tank 4, a handle 5, a tiller rotor 6, and the like. It also includes a resistance rod 7, and the like.

The airframe frame 1 supports the engine 2. The handle 5 is extended from the airframe frame 1. The handle 5 is inclined backward and upward.

In the airframe frame 1, the first support member 9 is bolted to the upper and lower intermediate portions of the transmission case 12 which also serves as a frame member in a forward extending posture, and the second support member 10 is connected to the upper part of the transmission case 12 in the transmission case 12. It is configured by connecting bolts so as to cover the upper part.

Further, the walking work machine A includes a transmission belt 24 and a left-right input shaft 11 provided on the upper part of the transmission case 12.

As shown in FIG. 1, the power from the engine 2 is transmitted from the left-right output shaft 2A provided in the engine 2 to the input shaft 11 via the transmission belt 24.

Then, the power from the input shaft 11 is transmitted to the output shaft 8 provided in the lower part of the transmission case 12 in the left-right direction via a transmission system such as a chain type transmission mechanism (not shown).

As shown in FIG. 1, the tiller rotor 6 is connected to the output shaft 8. Then, the tilling rotor 6 rotates integrally with the output shaft 8. By rotating the tiller rotor 6, the walking type work machine A can run.

[Configuration of fuel filler port adapter]
As shown in FIG. 2, the fuel tank 4 has a fuel filler port 4a. A fuel filler port adapter K is attached to the fuel filler port 4a.

The fuel filler port adapter K includes a housing 3, an on-off valve 13, an inner on-off valve 14, and a filter 15.

The housing 3 has an insertion portion 3a into which the refueling tool 20 can be inserted. Further, the lower end portion of the housing 3 is attached to the fuel filler port 4a. The connection between the lower end of the housing 3 and the fuel filler port 4a is a screw-in type. Further, the housing 3 is removable from the fuel filler port 4a.

Further, in the present embodiment, the housing 3 is composed of a single tubular member.

The on-off valve 13 is provided inside the housing 3. Further, the on-off valve 13 is attached to the housing 3. The on-off valve 13 is configured to be swingable around the first swing shaft core 13a along the left-right direction of the machine body. As shown in FIG. 2, the first swing shaft core 13a passes through the front end portion of the upper end portion inside the housing 3.

Further, the on-off valve 13 is urged to the closed side by an urging member (not shown). In FIG. 2, the on-off valve 13 in the closed posture is shown by a virtual line. The on-off valve 13 in the closed posture is in the horizontal posture.

Then, as shown in FIG. 2, the on-off valve 13 swings downward against the urging force of the urging member by being pushed by the refueling tool 20. That is, the on-off valve 13 is configured to be opened by being pushed by the refueling tool 20. Further, the on-off valve 13 can open and close the insertion portion 3a.

Further, the filter 15 is provided inside the housing 3 at a position on the lower side in the lubricator insertion direction with respect to the on-off valve 13.

More specifically, the filter mounting portion 3b is formed at the lower portion of the inner wall of the housing 3. The upper end of the filter 15 is attached to the filter mounting portion 3b. The connection between the upper end portion of the filter 15 and the filter mounting portion 3b is a screw-in type.

Further, the upper end portion of the filter 15 is removable from the filter mounting portion 3b. As a result, the filter 15 is configured to be removable from the housing 3.

The fuel supplied from the refueling tool 20 is filtered by the filter 15. The filtered fuel flows into the internal space of the fuel tank 4.

The inner on-off valve 14 is provided at a position inside the housing 3 between the on-off valve 13 and the filter 15. Further, the inner on-off valve 14 is attached to the housing 3. The inner on-off valve 14 is configured to be swingable around the second swing shaft core 14a along the left-right direction of the machine body. As shown in FIG. 2, the second swing shaft core 14a passes through the front end portion of the vertical intermediate portion inside the housing 3.

Further, the inner on-off valve 14 is urged to the closed side by an urging member (not shown). In FIG. 2, the inner on-off valve 14 in the closed posture is shown by a virtual line. The inner on-off valve 14 in the closed posture is in the horizontal posture.

Then, as shown in FIG. 2, the inner on-off valve 14 swings downward against the urging force of the urging member by being pushed by the refueling tool 20. That is, the inner on-off valve 14 is configured to be opened by being pushed by the refueling tool 20. Further, the inner on-off valve 14 can open and close the insertion portion 3a.

According to the configuration described above, the refueling operation can be easily performed only by pushing the refueling tool 20 so as to open the on-off valve 13 and the inner on-off valve 14. Further, the state of the filter 15 can be easily confirmed only by removing the housing 3 from the fuel filler port 4a. As a result, the work efficiency of refueling work and checking the state of the filter 15 is improved.

[First Embodiment]
In the above embodiment, the housing 3 is composed of a single tubular member.

However, the present invention is not limited to this. Hereinafter, the first embodiment according to the present invention will be described focusing on the differences from the above-described embodiment. The configuration other than the parts described below is the same as that of the above embodiment. Further, the same reference numerals are given to the same configurations as those in the above-described embodiment.

FIG. 3 shows the configuration of the fuel filler port adapter K according to the first embodiment of the present invention. The fuel filler port adapter K in the first embodiment includes a housing 30. The housing 30 has a first housing 31 and a second housing 32.

The on-off valve 13 and the inner on-off valve 14 are attached to the first housing 31.

Further, the filter mounting portion 3b is formed in the second housing 32. That is, the filter 15 is attached to the second housing 32.

Further, the second housing 32 is configured to be attached to the fuel filler port 4a. The connection between the second housing 32 and the fuel filler port 4a is a screw-in type. Further, the second housing 32 is removable from the fuel filler port 4a.

As shown in FIG. 3, a first mounting portion 31a is formed at the lower end portion of the first housing 31. Further, a second mounting portion 32a is formed at the upper end portion of the second housing 32.

Then, the first mounting portion 31a is mounted on the second mounting portion 32a. The connection between the first mounting portion 31a and the second mounting portion 32a is a screw-in type. Further, the first mounting portion 31a is removable from the second mounting portion 32a.

With the above configuration, the first housing 31 is detachably configured to be attached to and detached from the second housing 32.

It should be noted that each of the above-described embodiments is merely an example, and the present invention is not limited thereto and can be appropriately modified.

[Other embodiments]
(1) In addition to being provided with wheels, a rotary tilling device may be provided in place of the tilling rotor 6 so that the power from the engine 2 is transmitted to the wheels.

(2) The inner on-off valve 14 may not be provided.

(3) The housing 3 may be composed of three or more housings. In this case, the housings may be connected to each other in a detachable state.

(4) The filter 15 may be configured so that it cannot be removed from the housing 3.

(5) The on-off valve 13 may be configured so as not to be opened by being pushed by the refueling tool 20. For example, the on-off valve 13 may be configured so that it cannot swing downward and swing upward from a horizontal posture. In this case, the operator can use his / her hand to open the on-off valve 13 on the upper side against the urging force of the urging member.

Further, the on-off valve 13 may be configured so as not to swing on the upper side and the lower side and to be slidable in the horizontal direction. More specifically, the on-off valve 13 may be configured to be slidable by swinging around a swing axis along the vertical direction. In this case, the operator can use his / her hand to open the on-off valve 13 in the horizontal direction against the urging force of the urging member.

(6) The connection between the lower end portion of the housing 3 and the fuel filler port 4a may have a structure other than the screw-in type. For example, the connection between the lower end portion of the housing 3 and the fuel filler port 4a may be a fitting structure or a bolt fastening.

(7) The connection between the upper end portion of the filter 15 and the filter mounting portion 3b may have a structure other than the screw-in type. For example, the connection between the upper end portion of the filter 15 and the filter mounting portion 3b may be a fitting structure or a bolt fastening.

(8) The connection between the second housing 32 and the fuel filler port 4a may have a structure other than the screw-in type. For example, the connection between the second housing 32 and the fuel filler port 4a may be a fitting structure or a bolt fastening.

(9) The connection between the first mounting portion 31a and the second mounting portion 32a may have a structure other than the screw-in type. For example, the connection between the first mounting portion 31a and the second mounting portion 32a may be a fitting structure or may be bolted.

The present invention refuels not only the refueling port adapter attached to the refueling port of the fuel tank in a walking type work machine, but also the refueling port attached to the refueling port of a fuel tank in various working machines such as a combine, a rice transplanter, a tractor, and a construction work machine. Can be used for mouth adapters.

3, 30 Housing 3a Insertion part 4 Fuel tank 4a Refueling port 13 On-off valve 14 Inside on-off valve 15 Filter 20 Refueling tool 31 1st housing 32 2nd housing A Walking type work machine (working machine)
K refueling port adapter

Claims (5)

A fuel filler adapter that is attached to the fuel tank filler port of a work machine.
A housing that has an insertion part into which a refueling tool can be inserted and is attached to the refueling port.
An on-off valve configured to open and close the insertion portion and to be urged to the closed side,
Inside the housing, a filter provided at a position on the lower side in the lubricator insertion direction than the on-off valve is provided .
The housing can be attached and detached with the filter attached.
The filter is a refueling port adapter that is detachably fixed to the housing in a state of projecting from the lower end of the housing to the lower side in the refueling tool insertion direction . The fuel filler port adapter according to claim 1, wherein the on-off valve is configured to be opened by being pushed by the fuel filler. The housing is configured such that the lower end of the housing is screwed into and fixed to the outer peripheral portion of the fuel filler port.
The filter is configured so that the lower end portion of the housing is screwed and fixed to the outer peripheral portion, so that the position is held while being inserted into the fuel tank through the fuel filler port. Refueling port adapter according to 1 or 2. A fuel filler adapter that is attached to the fuel tank filler port of a work machine.
A housing having an insertion part into which a refueling tool can be inserted and attached to the refueling port, and an on-off valve configured to be able to open and close the insertion part and to be urged to the closing side.
Inside the housing, a filter provided at a position on the lower side in the lubricator insertion direction than the on-off valve is provided.
The housing has a first housing to which the on-off valve is attached and a second housing to which the filter is attached.
The second housing is configured to be attached to the fuel filler port.
The first housing is a fuel filler port adapter that is detachably attached to the second housing. An inner on-off valve that can open and close the insertion portion and is urged to the closed side is provided at a position between the on-off valve and the filter.
The fuel filler port adapter according to any one of claims 1 to 4, wherein the inner on-off valve is configured to be opened by being pushed by the fuel filler.

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