JP2585453Y2 - Mounting device for cooling water circulation line in cab-over type vehicle engine - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention provides a vehicle body frame provided with a floor panel forming a floor of a cabin for a driver, a water-cooled engine at a rear portion of the floor panel, and a radiator at a front portion. And a mounting device for a cooling water circulation passage from the engine to the radiator.

[0002]

2. Description of the Related Art Conventionally, in this type of cab-over type vehicle, as described in Japanese Utility Model Publication No. 3-16749, for example, the bottom plate of the floor panel is recessed upward. By forming an arched floor tunnel extending in the front-rear direction, the traveling wind after passing through the radiator is blown in the direction of the engine through the floor tunnel. Inside, a cooling water circulation pipeline from the engine to the radiator is provided.

[0003]

Since the floor panel is manufactured by press-molding a single metal plate, the height dimension of the floor tunnel provided in the floor panel is limited. However, it cannot be made too high because there is a limit value due to the relationship of deep drawing at the time of press forming.

On the other hand, a cooling water outlet in an engine is provided at the highest part of the engine. So, in order to make the height of the vehicle as low as possible,
When the seat at the rear end of the floor panel is arranged at a low position so as to approach the engine located at the lower part, a cooling water circulation pipe from the cooling water outlet of the engine to the radiator passes through the inside of the floor tunnel. In order to arrange the cooling water circulation pipe, the cooling water circulation pipe must be curved so as to be lower than a line connecting the cooling water outlet of the engine and the upper tank of the radiator.

As a result, in the course of the cooling water circulation pipe,
The accumulation of air not only prevents the normal circulation of the cooling water but also prevents the cooling water from being injected from the radiator to the engine side. An object of the present invention is to solve this problem without causing an increase in vibration and noise of the floor panel.

[0006]

According to the present invention, there is provided a vehicle body frame comprising a floor panel forming a cabin floor, an engine at a rear part of the floor panel, and a radiator at a front part. In the cab-over type vehicle, a floor tunnel formed by recessing the bottom plate upward is formed on a bottom plate between the front plate and the rear plate of the floor panel so as to extend in the front-rear direction. A cooling water circulation line from the cooling water outlet to the upper tank of the radiator is provided so as to extend through the front and rear plates of the floor panel and extend along the upper surface of the floor tunnel. The part of the floor panel that penetrates the front plate is connected to the front plate of the floor panel by a soft elastic material such as rubber. Was constructed to say that attach via the Met. ".

[0007]

[Operation] The cooling water circulation line from the cooling water outlet of the engine to the upper tank of the radiator is arranged so as to extend along the upper surface of the floor tunnel through the front plate and the rear plate of the floor panel. Accordingly, when the seat at the rear end of the floor panel is installed at a lower position so as to approach the engine in the lower portion, the cooling water circulation pipe is maintained in a state where the height dimension of the floor tunnel is reduced, and The cooling water outlet can be formed into a substantially linear shape that is inclined obliquely upward from the cooling water outlet toward the upper tank of the radiator.

On the other hand, since the cooling water circulation pipe has one end connected to the engine, vibration of the engine is transmitted to the cooling water circulation pipe. Attachment to the floor panel at a portion of the water circulation line near the engine increases transmission of vibration to the floor panel. Therefore, in the present invention, as described above, a portion of the cooling water circulation pipeline that penetrates the front plate of the floor panel is
It is designed to be attached to the front plate of the floor panel via a grommet made of a soft elastic material such as rubber,
As a result, the mounting position of the cooling water circulation pipe to the floor panel is farther than the engine. In other words, the cooling water circulation pipe is separated from the engine in Since it can be mounted via the grommet, transmission of vibration from the cooling water circulation line to the floor panel can be reliably reduced.

[0009]

Therefore, according to the present invention, the transmission of vibration to the floor panel is increased without impairing the workability of the press forming of the floor panel in the cab-over type vehicle, and the noise is further increased. Without this, there is an effect that the deterioration of the cooling performance of the engine and the deterioration of the water injection of the cooling water to the engine can be reliably prevented.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the figure, reference numeral 1 denotes a body frame provided with a pair of left and right side frames 1a, 1b extending in the front-rear direction of the vehicle. A metal plate is provided on a front upper surface of the body frame 1 with a bottom plate 2a, Front plate 2b and rear plate 2c
A floor panel 2 formed in a substantially upward U-shape so as to have

A cabin 3 is provided on the upper surface of the floor panel 2, and a seat 4 is provided in the cabin 3 and at a rear portion of the floor panel 2. On the upper surface of the vehicle body frame 1, an engine 5 is mounted on a rear part of the floor panel 2 and a lower part of the seat 4, and a radiator 6 is mounted on a front part of the floor panel 2. The floor plate 2a of the floor panel 2 has a floor tunnel 2d formed by recessing the bottom plate 2a upward so as to extend in the front-back direction.

Reference numeral 7 denotes a cooling water outlet 5a of the engine 5 to an upper tank 6 of the radiator 6.
The reference numeral 8 denotes the cooling water circulation line to the radiator 6.
The cooling water return circulation pipes from the lower tank 6b to the cooling water inlet 5b of the engine 5 in FIG. A metal pipe 7a disposed on the upper surface side of the floor tunnel 2d of the floor panel 2 so as to penetrate the front plate 2b and the rear plate 2c of the floor panel 2; A flexible pipe 7 connecting the rear end of the engine 7a and the cooling water outlet 5a of the engine 5
a and the flexible pipe 7c connecting the front end of the metal pipe 7a to the upper tank 6a of the radiator 6, while the upper surface of the floor tunnel 2d has
A cover 11 having a U-shaped cross section is provided so as to cover the cooling water circulation pipe 7.

In the portion of the cooling water circulation pipe 7 where the metal pipe 7a passes through the front plate 2b and the rear plate 2c of the floor panel 2, rubber or the like is inserted into the through holes in the front plate 2b and the rear plate 2. Grommets 9, 14 formed in a ring shape from a soft elastic body are mounted, and the metal pipe 7a is slidably inserted into the ring-shaped grommets 9, 14, while the metal pipe 7a is connected to the floor panel. 2, a bracket 10 is fixed to a portion penetrating the front plate 2b, and the bracket 10 is fixed to the front together with the cover 11 by a bolt 13 having a grommet 12 made of a soft elastic material such as rubber. Fastened to the plate 2b.

As described above, the cooling water outlet 5a of the engine 5
The cooling water circulation pipe 7 extending from the front panel 2b of the floor panel 2 to the upper tank 6a of the radiator 6 extends through the front plate 2b and the rear plate 2c of the floor panel 2 along the upper surface of the floor tunnel 2d. When the seat 4 at the rear end of the vehicle is installed at a lower position so as to approach the engine 5 at the lower part, the cooling water circulation line 7 is maintained in a state where the height dimension of the floor tunnel 2d is kept low. 5 from the cooling water outlet 5a toward the upper tank 6a of the radiator 6.

On the other hand, one end of the cooling water circulation pipe 7 is connected to the engine 5, so that the vibration of the engine 5 is transmitted to the cooling water circulation pipe 7. Therefore, as described above, the cooling water circulation pipe 7 is attached to the front plate 2b of the floor panel 2 by fastening the bolts 13 via the grommet 12 made of a soft elastic material such as rubber, so that the cooling water can be cooled. Since the mounting position of the water circulation pipe 7 to the floor panel 2 is farther than the engine 5, transmission of vibration from the cooling water circulation pipe 7 to the floor panel 2 can be reliably reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a cab-over type vehicle.

FIG. 2 is a plan view showing a main part of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2;

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

FIG. 5 is an enlarged view of a main part of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 2 Floor panel 2a Floor panel of floor panel 2b Front panel of floor panel 2c Rear panel of floor panel 2d Floor tunnel 3 Cabin 4 Seat 5 Engine 5a Cooling water outlet 6 Radiator 6a Upper tank 7 Cooling water circulation line 9 Ring grommet 12 Grommet 13 Mounting bolt

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F01P 11/04 F16F 15/08

Claims (1)

(57) [Scope of request for utility model registration] 1. A floor panel which forms a floor of a cabin is provided on a vehicle body frame, an engine is disposed at a rear portion of the floor panel, and a radiator is disposed at a front portion of the floor panel. In a cab-over type vehicle formed by forming a floor tunnel in which the bottom plate is recessed upward so as to extend in the front-rear direction, a cooling water circulation line from a cooling water outlet of the engine to an upper tank of a radiator is provided on the bottom plate of the above. through the front plate and the rear plate of Furowapaneru disposed so as to extend along the upper surface of the Geoffroy over tunnel, the one of the cooling water circulation pipe
A cooling water circulation pipe in a cab-over type vehicle engine, wherein a portion penetrating the front panel of the floor panel is attached to the front panel of the floor panel via a grommet made of a soft elastic material such as rubber. Mounting equipment.