JP3474738B2 - Partition structure in the hood of a traveling vehicle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compartment structure in a hood of a traveling vehicle, and more specifically to a compartment structure in which an air flow (including heat transfer) between a front and a rear of a radiator in an engine room is surely blocked. It is a thing.

[0002]

2. Description of the Related Art In a traveling vehicle such as a tractor, an engine is mounted in front of a driver's seat.
In some cases, an engine room is formed in the bonnet by surrounding various devices such as a radiator attached to the periphery thereof and other engine accessories and the like with the bonnet.

By the way, the radiator, as is well known, performs heat exchange (cooling) with internal water storage by the air taken in through a grill portion provided on the front surface of the bonnet. It is supposed to spit to the opposite side. Therefore, in order to keep the heat exchange efficiency in the radiator preferable, it is preferable to block the air flow and heat transfer in the engine rule between the front side and the rear side of the radiator.

Therefore, conventionally, it has been considered to provide a shielding member made of sponge, rubber or the like between the upper and left and right side portions of the radiator and the inner peripheral surface of the bonnet (Japanese Utility Model Publication No. 3-5450). Publication, Jikken 4-18
921, etc.).

[0005]

The shielding member is formed of a kind of elastic material from the outer peripheral surface of the radiator to the inner peripheral surface of the bonnet. Therefore,
As it is elastically rich, it has the advantage that it can be in close contact with both the outer peripheral surface of the radiator and the inner peripheral surface of the bonnet, so it is possible to make close contact with both surfaces, but on the other hand, for example, maintenance in the engine room Therefore, every time the bonnet is rocked up and down or the bonnet side plate is attached or detached, the shielding member is repeatedly elastically deformed as a whole, and as a result, wear or damage occurs relatively early. There was that.

Further, the shield member is exposed to heat over a wide area as a surface directed to the engine (the side from which the exhaust flow of the radiator is discharged), so that the thermal deterioration of the material is accelerated. Was becoming. For this reason, conventionally, in order to maintain good effects such as blocking the air flow and heat transfer in the engine rule between before and after the radiator, it is necessary to replace the shielding member relatively early. Was needed.

The present invention has been made in view of the above circumstances, and interrupting the air flow and heat transfer in the engine rule between before and after the radiator can be maintained for a long period without maintenance. It is another object of the present invention to provide a bonnet internal partition structure for a traveling vehicle that can easily perform maintenance even if maintenance is performed.

[0008]

In order to achieve the above object, the present invention takes the following technical means. That is, in the bonnet inner partition structure for a traveling vehicle according to the present invention, a fan shroud for covering the rotating space of the radiator fan is provided on the side facing the engine with respect to the radiator, and the bonnet inner peripheral surface is provided around the fan shroud. A flange portion projecting toward the front side is provided, and an elastic edging material is provided at the outer edge portion of the flange portion to block the air flow in the engine room between the front and rear of the radiator.

With this structure, most of the portion from the outer peripheral surface of the radiator to the inner peripheral surface of the bonnet is formed by the flange portion, and this portion is worn or damaged due to repeated contact with the bonnet, or is thermally damaged. It is possible to use a material that is not easily deteriorated. Therefore, it becomes excellent in durability. Further, the function of blocking the air flow and the heat transfer in the engine rule is surely obtained by the elastic edging material provided on the outer edge portion of the flange portion.

The flange portion may be made of resin, and the elastic edging material may be made of an elastic material softer than the flange portion. This makes it possible to reduce the weight. The bonnet may have a structure having a fixed top plate portion and side plate portions detachably attached to the left and right sides thereof. In this case, in the fan shroud, the flange portion may be provided so as to face at least the side plate portion of the bonnet.

Separately from this, the bonnet has a top plate portion and side plate portions on both left and right sides thereof, and is provided so as to be vertically swingable around a swinging support portion provided at one end in the front-rear direction. It can be structured. In this case, in the fan shroud, the flange portion may be provided so as to face the top plate portion and the side plate portion of the bonnet. When the bonnet can be opened and closed by swinging in this way, projecting members capable of contacting the inner surfaces of the both side plate portions in the closed state of the bonnet are provided on both left and right sides in the engine room. Also,
On the other hand, the both side plate portions of the bonnet are provided with click pieces that come into contact with the projecting member so that the projecting member can be overcome when opening and closing.

With such a structure, when the bonnet is closed, the left and right side plate portions are held in a predetermined shape and a predetermined position by the projecting member, and are vibrated depending on the contact state with the projecting member. There is an advantage that rattling with respect to the like is eliminated. Further, since the closed state of the bonnet is held by the engagement state of the click piece and the projecting member, this is also suitable for stabilizing the bonnet.

The flange portion can be formed integrally with the fan shroud, but it is also possible to form the flange portion separately and then attach the flange portion to the fan shroud later. This structure has an advantage that the shape and structure when various hoses and electric cables are passed through the flange portion can be simplified.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an outer side view of the traveling vehicle 1 to which the bonnet inner partition structure according to the present invention is applied. First, an outline of the traveling vehicle 1 will be described.
Is a two-axis, four-wheel type tractor having front wheels 2 used for steering and auxiliary traveling drive and rear wheels 3 used for main traveling drive, and is switched to two-wheel drive or four-wheel drive by driving from the engine 5. It is possible. In the rear part of the vehicle body 6 that includes the engine 5, the mission (not shown), etc.,
A hydraulic device 9 having a lift arm 8 is provided, and a three-point link 10 is provided so that the hydraulic device 9 can move up and down.

Various working machines 11 (cultivator in the illustrated example) can be connected to and disconnected from the three-point link 10 as required. This working machine 11 has P
The drive of the engine 5 can be transmitted via the TO shaft 12. Above the front axle frame 13 that extends forward from the engine 5, the bonnet is configured to entirely surround the engine 5 and various peripheral devices attached thereto and engine accessories. 14 is provided, and an engine room is formed in the bonnet 14.

A cabin 15 is provided on the vehicle body 6 behind the engine 5.
Inside, a cockpit in which the steering wheel 16 and the driver's seat 17 are arranged is formed. The cabin 15 in the illustrated example is provided with an opening / closing door 18 for getting in and out, and since the cockpit can be a closed space, air conditioning can be controlled by air conditioning equipment (air conditioner).

In such a traveling vehicle 1, as shown in FIGS. 3 to 5, in the engine room, the belt drive unit 21, the radiator 22, and the air conditioning condenser 23 are directed from the front of the engine 5 to the front thereof. Further, a battery 24 is provided, and a headlight 25, a horn 26, etc. are provided further in front of the battery 23. Further, an air cleaner 27 is provided above the battery 23, and the front surface thereof is the grill portion 2
It is 8.

A controller 30 for power steering is provided on the upper part of the engine 5 near the front part, slightly to the side of the engine head part.
The handle 16 (see FIG. 2) is connected via the transmission shaft 31. A reserve tank 32 for the radiator 22 is provided at the front of the controller 30. A muffler body 35 is provided above the rear part of the engine 5 via an exhaust guide pipe 34. This muffler body 35
An exhaust pipe 36 is connected to the exhaust pipe 36 and extends forward from the same side surface as the exhaust guide pipe 34 in a bent shape and then rises upward.

The belt driving unit 21 is a generator (alternator or dynamo) from the engine output shaft 38.
39 and a radiator fan 40 having a first belt 41 stretched over the respective input portions, and a second belt 44 stretched from the engine output shaft portion 38 over the input portion of the air conditioning compressor 42 and the tension pulley 43. ing.

The radiator 22 is provided with a fan shroud 46 on the surface facing the engine 5. The fan shroud 46 covers the exhaust surface of the radiator 22 except for the rotating space 47a of the radiator fan 40 (see FIGS. 3 to 5) as shown in FIGS. 1, 6 and 7. It has a portion 47, a lateral flange portion 48 which is provided so as to project to the left and right sides of the wind tunnel body portion 47, and an upper flange portion 49 which is provided so as to project above the wind tunnel body portion 47.

The lateral flange portion 48 and the upper flange portion 49
In addition to securing a mounting allowance for mounting the fan shroud 46 on the radiator 22, each is formed to have a size that projects further left and right outward and upward toward the inner peripheral surface of the bonnet 14. There is. The lateral flange portion 48 is provided integrally with the wind tunnel main body portion 47, but the upper flange portion 49 is a lower half body 49a integrally provided with the wind tunnel main body portion 47, This lower half 49
It is provided by the upper half body 49b connected to a. The lower half body 49a and the upper half body 49b are joined by bolting or riveting.

Fan shroud 46 (lateral flange portion 48
And the upper half portion 49a of the upper flange portion 49) and the upper half portion 49b of the upper flange portion 49 are both press-formed products made of a metal plate. An elastic edging material 52 is provided on the outer edge portions of the lateral flange portion 48 and the upper flange portion 49. This elastic edging material 52 is shown in FIG.
Further, as shown in FIG. 8, it is a tube string shape made of a soft resin or a soft rubber used as a weather strip in the cabin 15 and the like, and its cross-sectional shape is different from that of the lateral flange portion 48 and the upper flange portion 49. It has a bifurcated mounting portion 52a that can be inserted into the housing and a hollow pipe-shaped elastic portion 52b.

The elastic portion 52b is provided with slits 53 at predetermined intervals in the longitudinal direction in order to facilitate bending in accordance with the radius of the outer edge portion of the lateral flange portion 48 and the upper flange portion 49. Therefore, under the condition that the engine room is covered with the bonnet 14, the elastic portion 52b of the elastic edging material 52 can be brought into contact with the inner peripheral surface of the engine room with almost no gap formed. Inside, the air flow, heat transfer and the like are blocked in the front-rear direction with the fan shroud 46 as a boundary.

As shown in FIGS. 4 and 6, the bonnet 14 has a top plate portion 55 and side plate portions 5 on both left and right sides thereof.
And 6 are formed in a U-shaped cross section. Further, the grill portion 28 is integrally attached to the front end portion of the bonnet 14, and the top plate portion 55 is centered around the swing support portion 57 (see FIG. 3) provided at the upper portion of the rear end portion. Not only the side plate portion 56 but also the grill portion 28 is swingable in the vertical direction (see FIG. 2).

On the other hand, the lateral flange portion 48 of the fan shroud 46 has a side plate portion 56 in the bonnet 14.
At the position corresponding to the lower end of the
The elastic edging material 52 is divided into upper and lower parts with the constricted portion 58 as a boundary, as shown in FIG. Therefore, even if the elastic edging material 52 is changed to such a degree that it needs to be replaced, the replacement portion can be completed in the minimum necessary area. Therefore,
This is advantageous in terms of cost and replacement. And of course,
When the elastic edging material 52 is attached to the constricted portion 58 of the lateral flange portion 48, there is also an advantage that it is easy to follow the constricted shape.

In the lateral flange portion 48, a notch 61 for passing an electric cable 60 such as a power line or other wiring is provided at an appropriate position below the constricted portion 58. Then, the elastic edging material 52 is provided with a cutout 62 (which extends to the elastic portion 52b if necessary) at a portion corresponding to these cutouts 61 to prevent mutual interference with the electric cable 60. There is.

The upper flange portion 49 has a lower half body 4
Notches 63 and 64 of various sizes that open between the connection of 9a and the upper half body 49b are formed, and these notches 63 and 64 are formed.
Independently, or by matching each other with each other, 64 form holes through which the hose 65 for the air cleaner 27, the upper hose 66 for the radiator 22, the hose 67 for air conditioning, and the like can be inserted. By the way, this fan shroud 46 has a horizontal flange portion 4
A pair of left and right engaging members 70 (see FIG. 7) are provided which protrude from 8 toward both the left and right sides of the radiator 22 and which can be fitted to the radiator 22 in a fitting manner.

The engaging members 70 are provided with hooks 72 for hooking and holding insect repellent nets 71 (see FIG. 3) on the front surface of the radiator 22.
A protruding member 73 is provided so as to protrude from the inside of the engine room to the left and right. Of these, the protruding member 73
Is formed by bending a thin metal plate into a U-shape, and both ends of the U-shape are vertically distributed at substantially the same height as the constricted portion 58 provided on the lateral flange 48. It is oriented, and both ends or only one end thereof are fixed to the engaging member 70. And the hood 14
In the closed state, the protruding amounts of the left and right protruding members 73 are determined so that they can contact the inner surfaces of the left and right side plate portions 56, respectively.

On the other hand, as shown in FIGS. 4 and 6, the side plate portions 56 of the bonnet 14 are provided with click pieces 74 formed by folding the lower ends of the side plate portions slightly inward. These click pieces 74 can come into contact with the protruding member 73 when the bonnet 14 is opened and closed and oscillated. However, in the bonnet 14, the side plate portion 56 is in a state in which a certain amount of swaying or bending is allowed in the left-right direction. It is movable.

The closed state of the bonnet 14 is held by a lock mechanism 75 provided inside the grill 28, as shown in FIG. This lock mechanism 75 is provided with an operation piece 75a that also functions as a center mascot provided on the upper surface of the grill portion 28 so as to project.
Lock switching operation is possible. For this reason, when the bonnet 14 is closed, the left and right side plate portions 56 of the bonnet 14 come into contact with the projecting member 73, so that the bonnet 14 is held in a predetermined shape and in a predetermined position. Further, after that, since the contact state with the projecting member 73 is maintained, there is an advantage that rattling against vibration or the like is eliminated.

Further, since the closed state of the bonnet 14 is held by the engagement state of the click piece 74 and the projecting member 73, this is also suitable for stabilizing the bonnet 14. The radiator 22 is supported on the upper portion of the front axle frame 13, but the front axle frame 1
3, a front lower side plate 78 is provided on the front side of the radiator 22 in a rising shape as shown in FIG. 3, thereby supporting the battery 24. Further, a rear lower side plate 79 is provided on the rear side of the radiator 22 in a rising shape, thereby holding the left and right bonnet lower covers 80 as shown in FIG.

These front lower side plate 78 and rear lower side plate 7
Both 9 and the hood lower cover 80 are made of punching metal, expanded metal, or the like, and have air permeability. Therefore, the front lower side plate 78 is
Acts as an auxiliary air intake for the radiator 22,
The rear lower side plate 79 and the bonnet lower cover 80 act as an auxiliary air discharge portion for the radiator 22.

The front axle frame 13 is provided with a backflow blocking plate 82 between the radiator 22 and the engine 5 in front of and behind the radiator 5, which obliquely blocks the central space in the width direction. The backflow prevention plate 82 is for preventing the exhaust flow having heat discharged from the radiator 22 from being blown back to the front side and increasing the heat exchange efficiency in the radiator 22. By adopting such various peripheral structures for the radiator 22, the heat exchange efficiency in the radiator 22 can be enhanced in combination with the effect of shutting off the inside of the engine room by the fan shroud 46.

The present invention is not limited to the above embodiment. For example, in the fan shroud 46, the lateral flange portion 48 may be formed separately from the wind tunnel main body portion 47, like the upper flange portion 49, and may be attached later. Also, fan shroud 4
6, the lateral flange portion 48 and the upper flange portion 49 may both be formed integrally with the wind tunnel main body portion 47.

The lateral flange portion 48 and the upper flange portion 49
Can be made of resin or the like, regardless of whether it is integrally formed with the wind tunnel main body 47 or separately formed. In this case, the elastic edging material 52 provided on the outer edge portion of the lateral flange portion 48 and the upper flange portion 49 can also be integrally formed with different hardness (elasticity).

For example, in the portion through which the hose 65 for the air cleaner 27 penetrates the upper flange portion 49, as shown in FIGS. 9 and 10, an inverted triangular cutout 90 opened at the outer edge portion is provided, and this cutout is appropriately formed. A cushioning ring 91 and a cushioning envelope 92 formed of an elastic material may be fitted and a hose 65 (not shown) may be inserted therein.
Also in this case, the elastic edging material 52 is formed with the notch 62 in the mounting portion 52a (which extends to the elastic portion 52b as necessary) corresponding to the cushioning wheel body 91, the cushioning surrounding cylinder 92, and the like. It is good to put it.

The notches 90 shown in FIGS. 9 and 10 as well as the notches 61, 63, 64 shown in FIG. 7 etc. can of course be formed as holes. Horizontal flange 4
In FIG. 6, the amount of overhang is suppressed below the constricted portion 58 (that is, the portion unrelated to the opening / closing swing of the bonnet 14), and the sponge, rubber, or resin similar to the conventional one is used instead of the elastic edging material 52. Etc. may be provided.

The protruding member 73 that comes into contact with the inner peripheral surface of the bonnet 14 is not limited to being attached to the fan shroud 46, and may be provided to an appropriate member in the engine room. Further, the shape and material of the protruding member 73 are not limited at all. The click piece 74 provided on the bonnet 14 is not limited to the structure in which the lower end portion of the side plate portion 56 is bent, but can be provided by attaching another member to the side plate portion 56.

The bonnet 14 may have a top plate 55 fixed and a side plate 56 detachable or swingable to the left and right. In this case, at least this side plate portion 56
If the lateral flange portion 48 and the elastic edging member 52 are provided so as to correspond to the above, other structures of the fan shroud 46 are not limited at all. The traveling vehicle 1 is not limited to a tractor.

[0040]

As is apparent from the above description, in the bonnet inner partition structure for a traveling vehicle according to the present invention, a flange portion protruding from the periphery of the fan shroud provided on the radiator toward the inner peripheral surface of the bonnet is provided. Since the elastic edging material is provided on the outer edge portion of the flange portion, the flange portion can be formed of a material that is not easily worn or damaged due to repeated contact with the bonnet, or thermally deteriorated.

Therefore, the durability of the flange portion can be improved. This leads to the advantage of being able to maintain a maintenance-free state for a long period of time with respect to blocking the air flow and heat transfer in the engine rule between before and after the radiator. By making the flange portion made of resin, it is possible to reduce the weight. With such a structure, even when the bonnet has a structure in which the top plate portion is fixed and the side plate portion is detachable, the top plate portion and the side plate portion can swing up and down around the swinging support portion while remaining integral with each other. When it ’s a structure,
Although it can be adopted, when the bonnet can swing up and down, it is preferable that both side plate portions of the bonnet are brought into contact with each other by the left and right projecting members provided in the engine room. As a result, the shape and positioning of the side plate portion when the bonnet is closed can be held in a predetermined manner. Also,
The contact with the protruding member has an advantage of preventing rattling against vibration and the like.

If a click piece is further provided on the side plate portion of the bonnet, it is possible to obtain an advantage that the closed state of the bonnet is engaged and held and becomes stable. If the flange portion is separately formed and attached to the fan shroud afterwards, the shape and structure for passing various hoses, electric cables, etc. through the flange portion can be simplified.

[Brief description of drawings]

FIG. 1 is a partially exploded view (corresponding to a partially exploded view of FIG. 6) of a bonnet internal partition structure according to the present invention.

FIG. 2 is an outer side view of a traveling vehicle to which the hood inner partition structure according to the present invention is applied.

3 is an enlarged side view showing the inside of the bonnet shown in FIG. 2 (inside the engine room).

FIG. 4 is an enlarged sectional view taken along line AA of FIG.

5 is an enlarged plan view corresponding to FIG.

6 is an enlarged cross-sectional view taken along line BB of FIG.

FIG. 7 is an exploded perspective view of a fan shroud.

FIG. 8 is a perspective view showing a state in which an elastic edging material is attached to the flange portion of the fan shroud, which is partially crushed.

9 is a perspective view showing another embodiment of a portion corresponding to FIG.

FIG. 10 is a perspective view showing still another embodiment of a portion corresponding to FIG.

[Explanation of symbols]

1 traveling vehicle 5 engine 14 Bonnet 22 radiator 40 radiator fan 46 Fan Shroud 47a rotating space 48 Horizontal flange 49 Upper flange part 52 Elastic edging material 55 Top plate 56 Side plate 57 Swing Branch 73 Projection member 74 click pieces

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kaoru Fujikawa 64 No. Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Co., Ltd.Sakai Factory (72) Kengo Sato 64 No. Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. In-house (56) References JP-A-3-292273 (JP, A) JP-A-3-182838 (JP, A) Actual Kaihei 5-10057 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60K 11/04 B62D 25/10

Claims (5)

(57) [Claims] 1. A radiator fan (4) on the side facing the engine (5) with respect to a radiator (22) installed in an engine room surrounded by a bonnet (14).
0) is provided with a fan shroud (46) for covering the rotating space (47a), and flange portions (48) (49) are provided around the fan shroud (46) so as to project toward the inner peripheral surface of the bonnet (14). The flange portion (4
8) An elastic edging material (52) is provided on an outer edge portion of the (49) to allow air flow in the engine room to the radiator (2).
The front and rear of 2) are shut off, and the bonnet (14) is provided on the top plate (55) and its left and right sides.
It has side plate parts (56) on both sides,
Swing up and down around the swing support (57) provided near one end.
The fan shroud (4
In 6), the flange parts (48) and (49) are bonnets.
(14) toward the top plate (55) and side plate (56)
It is provided in the arrangement, both left and right sides in the engine room
Minutes on both sides with the bonnet (14) closed
A protruding member (73) that can contact the inner surface of (56) is provided.
Open and close on both side plate parts (56) of the bonnet (14).
Capable of overcoming the protruding member (73) during rocking
Be provided with a click piece (74) that abuts to a certain degree.
And a bonnet inner partition structure for traveling vehicles. 2. A radiator fan (4) on the side facing the engine (5) with respect to a radiator (22) installed in an engine room surrounded by a bonnet (14).
0) is provided with a fan shroud (46) for covering the rotation space, and resin flange portions (48) (49) are provided around the fan shroud (46) so as to project toward the inner peripheral surface of the bonnet (14). The flange portion (4
8) The flange portion (48) (4) is attached to the outer edge portion of (49).
9) Elastic edging material having softer elasticity than (52)
Is provided to block the air flow in the engine room between the front and rear of the radiator (22), and the bonnet (14) includes a top plate portion (55) and its left and right sides.
It has side plate parts (56) on both sides,
Swing up and down around the swing support (57) provided near one end.
The fan shroud (4
In 6), the flange parts (48) and (49) are bonnets.
It turned to the top plate part (55) and the side plate part (56) of (14) .
It is provided in the arrangement, both left and right sides in the engine room
Minutes on both sides with the bonnet (14) closed
A protruding member (73) that can contact the inner surface of (56) is provided.
Open and close on both side plate parts (56) of the bonnet (14).
Capable of overcoming the protruding member (73) during rocking
A partition structure in a hood of a traveling vehicle, which is provided with a click piece (74) that abuts to a certain degree . The compartment structure in the hood of the traveling vehicle characterized by being 3. The hood (14) has a fixed top plate portion (55) and side plate portions (56) detachably attached to the left and right sides thereof, and the fan shroud (46).
3. The bonnet inner partition structure for a traveling vehicle according to claim 1, wherein the flange portion (48) is provided so as to face at least the side plate portion (56) of the bonnet (14). 4. The fan shroud (46),
The bonnet inner partition structure for a traveling vehicle according to any one of claims 1 to 3, wherein the flange portions (48) (49) are separately formed and then attached later. 5. The flange portion (48) (49),
The upper flange portion (49) is provided with notches (63) (64) of various sizes that open between the joining of the lower half body (49a) and the upper half body (49b). (6
3) (64) forms a hole through which the hose (65) for the air cleaner (27), the upper hose (66) for the radiator (22), and the hose for air conditioning (67) can be inserted independently or by matching each other. Claim 1 or 2 characterized by the above.
The compartment structure in the hood of the traveling vehicle described .