JPH1191371A - Partition structure in the hood of a traveling vehicle - Google Patents

Abstract

(57) [Summary] In a tractor, a radiator provided in an engine room is attached with sponges on both left and right sides and an upper portion thereof to fill a gap formed between the radiator and the inner peripheral surface of the hood. As a result, the movement of air and heat was blocked. However, sponges suffered from abrasion, damage and thermal deterioration, resulting in poor durability. SOLUTION: In a fan shroud 46 provided on a surface facing an engine side of a radiator 22, an outer peripheral portion thereof is extended right and left and upward, and a horizontal flange portion 48 and an upper flange portion 49 are provided. Then, an elastic edging material 52, which is usually used as a weather strip, is fitted to the outer edges of the horizontal flange portion 48 and the upper flange portion 49. The horizontal flange portion 48 and the upper flange portion 49 can be made of metal or resin, and the durability can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[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.
Some devices such as a radiator attached to the periphery and other engine accessories and the like are surrounded by a bonnet so that an engine room is formed in the bonnet.

As is well known, the radiator performs heat exchange (cooling) with internal water by air taken in through a grill provided on the front of the bonnet. And spits out to the opposite side. Therefore, in order to keep the heat exchange efficiency in the radiator suitable, it is preferable to shut off 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 formed of sponge, rubber, or the like between the upper portion, the left and right side portions of the radiator, and the inner peripheral surface of the bonnet (Japanese Utility Model Publication No. 3-5450). No. 4-18
921).

[0005]

The above-mentioned 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,
It is abundant in elasticity, and it has good adaptability to the outer peripheral surface of the radiator and the inner peripheral surface of the bonnet, so that it has the advantage that it can be brought into close contact with both surfaces, but on the other hand, for example, maintenance in the engine room Therefore, every time the bonnet is swung 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 is caused relatively early. There was that.

Further, since the shielding member is exposed to heat in a large area as a surface facing the engine (a side from which the exhaust flow of the radiator is discharged), thermal deterioration of the material is accelerated. Had become. For this reason, conventionally, in order to maintain a good effect such as shutting off 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.

[0007] The present invention has been made in view of the above circumstances, and it is possible to maintain the air flow and heat transfer in the engine rule between before and after the radiator for a long time without maintenance. It is another object of the present invention to provide a partition structure in a hood of a traveling vehicle that can easily perform maintenance even if maintenance is performed.

[0008]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, in the compartment structure in the hood of the traveling vehicle according to the present invention, the radiator is provided with a fan shroud covering the rotation space of the radiator fan on the side facing the engine, and the bonnet inner peripheral surface is provided around the fan shroud. A flange is provided to project toward the radiator, and an elastic edging material is provided on an outer edge of the flange to block an air flow in the engine room between before and after the radiator.

With such a configuration, 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. The material can be made less susceptible to deterioration. Therefore, it is excellent in durability. Further, the air flow and heat transfer blocking action in the engine rule can be reliably obtained by the elastic edging material provided on the outer edge of the flange portion.

[0010] The flange may be made of resin, and the elastic edging material may be made of an elastic material softer than the flange. This can reduce the weight. The bonnet can be structured to have a fixed top plate and side plates detachably provided on both left and right sides thereof. In this case, in the fan shroud, the flange may be provided at least so as to face the side plate of the bonnet.

Apart from this, the bonnet has a top plate and side plates on the left and right sides thereof, and is provided so as to be able to swing vertically around a swing support provided near one end in the front-rear direction. It can also 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 hood can be swingably opened and closed in this way, projecting members capable of contacting the inner surfaces of both side plate portions with the hood closed are provided on both left and right portions in the engine room. Also,
On the other hand, on both side plates of the bonnet, click pieces are provided which abut on the protruding member so as to be able to get over the protruding member at the time of swinging.

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 protruding members, and the vibration is caused by the contact state with the protruding members. There is an advantage that rattling to the like is eliminated. Further, the closed state of the bonnet is maintained by the engaged state of the click piece and the protruding member, which is also suitable for stabilizing the bonnet.

Although the flange portion can be formed integrally with the fan shroud, a structure may be adopted in which only the flange portion is formed separately and then attached to the fan shroud. This structure has an advantage that the shape and structure when various hoses, electric cables, and the like are passed through the flange portion can be simplified.

[0014]

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 hood interior partition structure according to the present invention is applied. First, the traveling vehicle 1 will be briefly described.
Is a two-shaft, four-wheel tractor having a front wheel 2 used for steering and auxiliary driving and a rear wheel 3 used for main driving, and is switched to two-wheel driving or four-wheel driving by driving from the engine 5. It is possible. A rear portion of the vehicle body 6 including the engine 5 and a mission (not shown)
A hydraulic device 9 having a lift arm 8 is provided, and a three-point link 10 is provided to be able to move up and down by the hydraulic device 9.

The three-point link 10 can be connected to or disconnected from various working machines 11 (tillage machines in the illustrated example) as required. This work machine 11 has P
The drive of the engine 5 can be transmitted via the TO shaft 12. Above the front axle frame 13 extending forward from the engine 5, a hood including the engine 5 as well as various devices and engine accessories attached to the periphery of the engine 5 is entirely enclosed. An engine room is formed in the hood 14.

A cabin 15 is provided on the vehicle body 6 behind the engine 5.
A cockpit in which a steering wheel 16 and a 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 on and off, so that the cockpit can be made a closed space, so that the air conditioning (air conditioner) can control the cooling and heating.

In such a traveling vehicle 1, as shown in FIGS. 3 to 5, in the engine room, a belt driving unit 21, a radiator 22, a condenser 23 for air conditioning are arranged from the front of the engine 5 toward the front thereof. And a battery 24. A headlight 25, a horn 26, and the like are provided further in front of the battery 23. An air cleaner 27 is provided on the upper part of the battery 23, and its front face is the grill part 2.
It is 8.

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

The belt drive 21 is driven by an engine output shaft 38 from a generator (alternator or dynamo).
A first belt 41 laid over the respective input portions of the radiator fan 39 and the radiator fan 40; and a second belt 44 laid over the input portion of the air conditioning compressor 42 and the tension pulley 43 from the engine output shaft 38. ing.

The radiator 22 is provided with a fan shroud 46 on a surface facing the engine 5. The fan shroud 46 covers the exhaust surface of the radiator 22 except for the rotation space 47a of the radiator fan 40 (see FIGS. 3 to 5) as shown in FIGS. 1, 6, and 7. A portion 47, a horizontal flange portion 48 extending to the left and right sides of the wind-tunnel main body 47, and an upper flange portion 49 extending to the upper side of the wind-tunnel main portion 47 are provided.

Horizontal flange portion 48 and upper flange portion 49
Each of them is formed in a size that not only secures a mounting margin for mounting to the radiator 22 as the fan shroud 46 but also protrudes right and left outward and upward toward the inner peripheral surface of the bonnet 14. I have. The horizontal flange portion 48 is provided integrally with the wind tunnel main body portion 47, while the upper flange portion 49 is provided with a lower half body 49a provided integrally with the wind tunnel main body portion 47, This lower half 49
a provided by an upper half body 49b coupled to a. The connection between the lower half 49a and the upper half 49b is performed by bolting or riveting.

The fan shroud 46 (lateral flange portion 48)
The upper half 49 of the upper flange 49 and the upper half 49b of the upper flange 49 are both press-formed products made of a metal plate. Elastic edging members 52 are provided on the outer edges of the horizontal flange portion 48 and the upper flange portion 49. This elastic edging material 52 is provided in FIG.
As shown in FIG. 8, a tube string made of a soft resin or a soft rubber used as a weather strip in the cabin 15 or the like has a cross-sectional shape which is different from that of the horizontal flange portion 48 and the upper flange portion 49. It has a bifurcated mounting portion 52a that can be inserted and inserted, and a hollow pipe-shaped elastic portion 52b.

The elastic portion 52b is provided with slits 53 at predetermined intervals in the longitudinal direction to facilitate bending according to the radius of the outer edge of the horizontal flange portion 48 and the upper flange portion 49. For this reason, in a situation where the hood 14 covers the engine room, the elastic portion 52b of the elastic edging member 52 can abut on the inner peripheral surface of the engine room with almost no gap. Inside, the air flow, heat transfer, and the like are blocked in the front-back direction by the fan shroud 46 as a boundary.

As shown in FIGS. 4 and 6, the bonnet 14 has a top plate 55 and side plate portions 5 on both left and right sides thereof.
6 to form a U-shaped cross section. The grille 28 described above is integrally attached to the front end of the bonnet 14, and the top plate 55 has a swing support 57 (see FIG. 3) provided at the upper portion of the rear end. The grill portion 28 as well as the side plate portion 56 is swingable up and down (see FIG. 2).

On the other hand, the lateral flange portion 48 of the fan shroud 46 is provided with a side plate portion 56 of the bonnet 14.
Constricted portion 58 constricted inward at a position corresponding to the lower end of
Are formed, and the elastic edging material 52 is vertically divided by the constricted portion 58 as shown in FIG. Therefore, even in the event that the elastic edging member 52 is changed to such an extent that it needs to be replaced, the replacement portion can be completed in a minimum necessary area. Therefore,
This is advantageous in terms of cost and labor for replacement. Also, of course,
In attaching the elastic edging material 52 to the constricted portion 58 of the horizontal flange portion 48, there is an advantage that the elastic edging member 52 can easily follow the constricted shape.

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

The lower flange 4 is attached to the upper flange 49.
Notches 63, 64 of various sizes, which are opened between the connection of the upper part 49a and the upper half body 49b, are formed.
The holes 64 individually or in accordance with each other form holes through which the hose 65 for the air cleaner 27, the upper hose 66 for the radiator 22 and the air conditioning hose 67 can be inserted. By the way, this fan shroud 46 has a lateral flange 4
A pair of left and right engaging members 70 (see FIG. 7) are provided which protrude from the left and right sides of the radiator 22 to the right and left sides of the radiator 22 so as to be fitted into the radiator 22.

The engaging members 70 are provided with hooks 72 for hooking and holding insect repellents 71 (see FIG. 3) on the front surface of the radiator 22.
A protruding member 73 that protrudes left and right from the inside of the engine room is provided. Among them, the protruding member 73
Is formed by bending a thin metal plate into a U-shape, and divides both ends of the U-shape in the vertical direction at substantially the same height as the constricted portion 58 provided on the horizontal flange portion 48. Orientation, only both ends or one end thereof is fixed to the engaging member 70. And the hood 14
When the is closed, the amount of protrusion is determined so that the left and right projecting members 73 can abut against the inner surfaces of the left and right side plate portions 56, respectively.

On the other hand, as shown in FIGS. 4 and 6, on both side plate portions 56 of the bonnet 14, click pieces 74 formed by slightly folding the lower ends thereof inward are provided. These click pieces 74 can come into contact with the protruding members 73 when the hood 14 swings open and closed. However, in the bonnet 14, the side plate portion 56 is allowed to swing and bend to some extent in the left-right direction. Therefore, when the bonnet 14 is opened and closed, the click piece 74 gets over each projecting member 73 and moves up and down. It is movable.

The closed state of the bonnet 14 is retained by a lock mechanism 75 provided inside the grill portion 28 as shown in FIG. The lock mechanism 75 is operated by an operation piece 75a that also serves as a center mascot and protrudes from the upper surface of the grill section 28.
Lock switching operation is enabled. For this reason, when the bonnet 14 is closed, the left and right side plate portions 56 are held in a predetermined shape and a predetermined position by contacting the protruding members 73. Further, since the contact state with the protruding member 73 is maintained thereafter, there is an advantage that rattling against vibration or the like is eliminated.

Furthermore, the closed state of the bonnet 14 is maintained by the engagement state of the click piece 74 and the protruding member 73, which is also suitable for stabilizing the bonnet 14. The radiator 22 is supported on an upper portion of the front axle frame 13.
As shown in FIG. 3, a front lower plate 78 is provided on the front side of the radiator 22 in a standing shape, and supports the battery 24. Further, a rear lower side plate 79 is provided on the rear side of the radiator 22 in an upright manner, thereby holding the left and right hood lower covers 80 as shown in FIG.

The front lower side plate 78 and the rear lower side plate 7
9 and the hood lower cover 80 are both formed of a material such as punched metal or expanded metal, and have air permeability. Therefore, the front lower side plate 78 is
Act as an air assist intake for the radiator 22,
The rear lower side plate 79 and the hood lower cover 80 function as an auxiliary air discharge unit for the radiator 22.

The front axle frame 13 is provided with a backflow prevention plate 82 between the radiator 22 and the engine 5 for obliquely blocking the central space in the width direction thereof. The backflow prevention plate 82 is for preventing the exhaust flow having heat exhausted from the radiator 22 from being blown back forward, thereby improving 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 is enhanced in combination with the effect of blocking 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 horizontal flange portion 48 may be formed separately from the wind tunnel main body portion 47 similarly to the upper flange portion 49, and may be attached later. In addition, fan shroud 4
In 6, it is also possible to adopt a structure in which both the horizontal flange portion 48 and the upper flange portion 49 are formed integrally with the wind tunnel main body portion 47.

Horizontal flange portion 48 and upper flange portion 49
Aside from being formed integrally with the wind-tunnel main body 47 or formed separately, it can be made of resin or the like. In this case, the elastic edging members 52 provided on the outer edges of the horizontal flange portion 48 and the upper flange portion 49 can be integrally formed with different hardness (elasticity).

For example, at the portion where the hose 65 for the air cleaner 27 passes through the upper flange portion 49, an inverted triangular notch 90 opened at the outer edge is provided as shown in FIGS. What is necessary is just to fit the buffering ring body 91 and the buffering envelope 92 formed of an elastic material, and to insert the hose 65 (not shown) therethrough.
Also in this case, the notch 62 (which extends to the elastic portion 52b as necessary) is formed in the mounting portion 52a in the elastic rim material 52 so as to correspond to the buffer ring 91, the buffer envelope 92, and the like. Good to put.

The notches 90 shown in FIGS. 9 and 10 as well as the notches 61, 63, 64 shown in FIG. 7 and the like can of course be formed as holes. Horizontal flange 4
6, on the lower side of the constricted portion 58 (that is, the portion unrelated to the swinging movement of the bonnet 14), the amount of overhang is kept small, and instead of the elastic fringing material 52, a sponge, rubber, or resin similar to the conventional one is used. May be provided.

The protruding member 73 abutting on the inner peripheral surface of the bonnet 14 is not limited to being attached to the fan shroud 46, but may be provided for 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 to the bonnet 14 is not limited to the structure in which the lower end 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 can be configured such that the top plate 55 is fixed and the side plate 56 is detachable or swingable left and right. In this case, at least the side plate portion 56
The other structure of the fan shroud 46 is not limited at all if the horizontal flange portion 48 and the elastic edging member 52 are provided so as to correspond to the above. The traveling vehicle 1 is not limited to a tractor.

[0040]

As is apparent from the above description, in the bonnet compartment structure for a traveling vehicle according to the present invention, the flange portion projecting from the periphery of the fan shroud provided on the radiator toward the bonnet inner peripheral surface is provided. Since the elastic edging material is provided on the outer edge of the flange portion, the flange portion can be formed of a material which is hardly subject to wear, damage, or thermal deterioration due to repeated contact with the bonnet.

Therefore, the durability of the flange can be improved. This leads to an advantage that maintenance-free operation can be maintained for a long period of time in terms of shutting off air flow and heat transfer in the engine rule between before and after the radiator. By making the flange portion made of resin, weight reduction can be achieved. Such a configuration, 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 be swung up and down around the swing support portion while being integrated 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 the left and right protruding members provided in the engine room abut both side plates of the bonnet. As a result, the shape and positioning of the side plate when the hood is closed can be maintained at a predetermined level. Also,
There is an advantage that rattling against vibration or the like can be prevented by contact with the protruding member.

If a click piece is further provided on the side plate portion of the hood, the advantage that the closed state of the hood is engaged and held to be stable can be obtained. When the flange portion is formed separately from the fan shroud and attached later, the shape and structure when various hoses, electric cables, and the like penetrate the flange portion can be simplified.

[Brief description of the drawings]

FIG. 1 is a partially exploded view (corresponding to a partially exploded view of FIG. 6) of a compartment structure in a hood according to the present invention.

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

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

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 3;

FIG. 5 is an enlarged plan view corresponding to FIG. 3;

FIG. 6 is an enlarged sectional view taken along line BB of FIG. 3;

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

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

FIG. 9 is a perspective view showing another embodiment of a portion corresponding to FIG. 8;

FIG. 10 is a perspective view showing still another embodiment of a portion corresponding to FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running vehicle 5 Engine 14 Bonnet 22 Radiator 40 Radiator fan 46 Fan shroud 47a Rotation space 48 Horizontal flange part 49 Upper flange part 52 Elastic edging material 55 Top plate part 56 Side plate part 57 Swing support part 73 Projection member 74 Click piece

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kaoru Fujikawa 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. Inside

Claims (5)

[Claims] A radiator fan (4) is provided on a side facing an engine (5) with respect to a radiator (22) installed in an engine room surrounded by a bonnet (14).
A fan shroud (46) covering the rotation space (47a) of (0) is provided, and flange portions (48) (49) projecting toward the inner peripheral surface of the hood (14) are provided around the fan shroud (46). And the flange portion (4
8) An elastic edging material (52) is provided on the outer edge of (49) to reduce the air flow in the engine room to the radiator (2).
2) A compartment structure in a hood of a traveling vehicle, wherein the compartment is blocked between front and rear. 2. A radiator fan (4) on a side facing an engine (5) with respect to a radiator (22) installed in an engine room surrounded by a bonnet (14).
A fan shroud (46) covering the rotation space of (0) is provided, and resin flange portions (48) (49) projecting toward the inner peripheral surface of the bonnet (14) are provided around the fan shroud (46). And the flange portion (4
8) At the outer edge portion of (49), the flange portion (48) (4)
9) Elastic border material having softer elasticity than (9)
Wherein the air flow in the engine room is shut off before and after the radiator (22). 3. The hood (14) has a fixed top plate portion (55) and side plate portions (56) detachable on both left and right sides thereof, and the fan shroud (46).
The hood interior compartment structure for a traveling vehicle according to claim 1 or 2, wherein the flange portion (48) is provided so as to face at least the side plate portion (56) of the hood (14). 4. The hood (14) includes a top plate (5).
5) and swinging support portions (57) provided on both left and right sides thereof, and provided near one end in the front-rear direction.
The fan shroud (46) is provided so as to be able to swing up and down around the flange.
Are the top plate (55) and the side plate (5) of the bonnet (14).
6), and projecting members (7) that can abut on the inner surfaces of both side plate portions (56) with the hood (14) closed in the left and right sides in the engine room.
3) is provided, and both side plates (5) of the hood (14) are provided.
3. A travel as claimed in claim 1, wherein the click piece (74) is provided at 6) so as to be able to get over the protruding member (73) when swinging the opening and closing movement. The compartment structure in the hood of the vehicle. 5. The fan shroud (46)
The compartment structure in a hood of a traveling vehicle according to any one of claims 1 to 4, wherein the flange portions (48) and (49) are separately formed and attached later.