JPH0618626U - Mounting device for cooling water circulation pipe in engine for cab-over type vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] In a cab-over vehicle, the cabin 3
Without impairing the workability of the floor panel 2 of
In addition, air is prevented from accumulating in the cooling water circulation pipe line 7 from the engine 5 to the radiator 6 without causing an increase in vibration in the floor panel 2. The cooling water circulation pipe line 7 is arranged so as to penetrate the front plate 2b and the rear plate 2d of the floor panel 2 and extend along the upper surface of the floor tunnel 2d. The front panel 2b of the floor panel 2 is attached with a bolt 13 with a grommet 12 made of a soft elastic material such as rubber.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cabover type vehicle in which a body panel is provided with a floor panel forming a floor of a cabin for a driver, a water-cooled engine is provided at a rear portion of the floor panel, and a radiator is provided at a front portion. The present invention relates to a mounting device for a cooling water circulation passage from the engine to the radiator.

[0002]

[Prior art]

 Conventionally, in a cab-over type vehicle of this type, as described in, for example, Japanese Utility Model Publication No. 3-16 749, the bottom plate of the floor panel is formed into an arch shape by denting the bottom plate upward. By forming the floor tunnel of the vehicle so as to extend in the front-rear direction, the traveling wind after passing through the radiator is configured so as to be blown toward the engine in the direction of the inside of the floor tunnel. The cooling water circulation pipe from the engine to the radiator is installed.

[0003]

[Problems to be solved by the device]

 By the way, the entire floor panel is manufactured by press molding from a single metal plate.Therefore, the height dimension of the floor tunnel provided in this floor panel depends on the deep drawing at the time of press molding. Due to the existence of a limit value due to the relationship of, it cannot be raised too high.

On the other hand, the cooling water outlet of the engine is provided at the highest part of the engine. Therefore, in order to reduce the height of the vehicle as much as possible, when the seat at the rear end of the floor panel is arranged at a low position so as to be close to the engine located below it, from the cooling water outlet of the engine In order to arrange the cooling water circulation pipe to the radiator so as to pass through the inside of the floor tunnel, once in the middle of the cooling water circulation pipe rather than the line connecting the cooling water outlet of the engine and the upper tank of the radiator, It must be curved to lower it.

As a result, not only the normal circulation of the cooling water is hindered by the accumulation of air in the cooling water circulation pipeline, but also the injection of the cooling water from the radiator to the engine is hindered. There was a problem to say. The present invention has a technical problem to solve this problem without causing increase in vibration and noise of the floor panel.

[0006]

[Means for Solving the Problems]

 In order to achieve this technical problem, the present invention provides a vehicle body frame with a floor panel forming a floor of a cabin, and an engine at a rear portion of the floor panel and a radiator at a front portion thereof, respectively. In a cab-over type vehicle in which a bottom tunnel between the front plate and the rear plate is formed so as to extend in the front-rear direction by forming a floor tunnel in which the bottom plate is recessed upward, The cooling water circulation pipe leading to the upper tank of the radiator is arranged so as to pass through the front plate and the rear plate of the floor panel and extend along the upper surface of the floor tunnel, and the cooling water circulation pipe is connected to the front panel of the floor panel. It is configured to be attached to the plate via a grommet made of soft elastic material such as rubber.

[0007]

[Work]

 By arranging the cooling water circulation pipe from the cooling water outlet of the engine to the radiator upper tank so as to extend along the upper surface of the floor tunnel through the front plate and the rear plate of the floor panel, When the seat at the rear end of the floor panel is installed at a lower part so that it is closer to the engine in the lower part of the floor panel, the cooling water circulation pipe is set to the cooling water of the engine while the height dimension of the floor tunnel is kept low. It is possible to make a substantially straight line that inclines obliquely upward from the outlet toward the upper tank of the radiator.

On the other hand, since one end of the cooling water circulation pipe is connected to the engine, the vibration of the engine is transmitted to the cooling water circulation pipe. As described above, the location where the cooling water circulation pipeline is attached to the floor panel should be farther from the engine because it is attached to the front plate of the floor panel via a grommet made of a soft elastic material such as rubber. In other words, since the cooling water circulation pipe can be attached to the floor panel at a position distant from the engine, it is possible to reliably reduce the transmission of vibrations from the cooling water circulation pipe to the floor panel. You can do it.

[0009]

[Effect of device]

 Therefore, according to the present invention, without impairing the workability of the press molding of the floor panel in the cab-over type vehicle, and without increasing the transmission of vibrations to the floor panel, and consequently the noise, It has the effect of reliably preventing the deterioration of the cooling performance of the engine and the deterioration of the water injection of the cooling water to the engine.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 indicates a vehicle body frame provided with a pair of left and right side frames 1a 1 and 1b extending in the front-rear direction of the vehicle. A floor panel 2 having a front plate 2b and a rear plate 2c, which is formed in a substantially upward U-shape, is attached.

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

Reference numeral 7 denotes a cooling water circulation pipe line from the cooling water outlet 5a in the engine 5 to the upper tank 6a in the radiator 6, and reference numeral 8 denotes a cooling water in the engine 5 from the lower tank 6b in the radiator 6. Each of the cooling water return circulation lines to the inlet 5b is shown. Then, the cooling water circulation pipe 7 is arranged 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, and the metal pipe 7a. A flexible pipe 7a connecting the rear end of 7a and the cooling water outlet 5a of the engine 5 and a flexible pipe 7c connecting the front end of the metal pipe 7a to the upper tank 6a of the radiator 6 are provided. On the upper surface of the floor tunnel 2d, a cover 11 having a U-shaped cross section is provided so as to cover the cooling water circulation pipe line 7.

Further, in the portion of the cooling water circulation pipe 7 where the metal pipe 7 a penetrates the front plate 2 b and the rear plate 2 c in the floor panel 2, in the through holes in the front plate 2 b and the rear plate 2, The grommets 9 and 14 formed in a ring shape with a soft elastic body such as rubber are mounted, and the metal pipe 7a is slidably inserted into the ring-shaped grommets 9 and 14, while the metal pipe 7a is A bracket 10 is fixed to a portion of the floor panel 2 that penetrates the front plate 2b, and the bracket 10 is attached to the cover 11 together with a bolt 13 provided with a grommet 12 made of a soft elastic material such as rubber. Then, the front plate 2b is fastened.

In this way, the cooling water circulation pipeline 7 from the cooling water outlet 5a of the engine 5 to the upper tank 6a of the radiator 6 penetrates the front plate 2b and the rear plate 2c of the floor panel 2 and the upper surface of the floor tunnel 2d. Since the seat 4 at the rear end of the follower panel 2 is installed at a low position so as to be close to the engine 5 at its lower part, the cooling water circulation pipe 7 is With the height dimension of the floor tunnel 2d kept low, the floor tunnel 2d can be formed into a substantially straight line that is inclined obliquely upward from the cooling water outlet 5a of the engine 5 toward the upper tank 6a of the radiator 6.

On the other hand, since one end of the cooling water circulation pipe 7 is connected to the engine 5, 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 through the soft elastic grommet 12 such as rubber to cool the front panel 2b. Since the location where the water circulation pipe 7 is attached to the floor panel 2 will be farther from the engine 5, the transmission of vibrations from the cooling water circulation pipe 7 to the floor panel 2 can be reliably reduced.

[Brief description of 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.

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

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

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

[Explanation of symbols]

 1 body frame 2 floor panel 2a floor panel bottom plate 2b front panel front panel 2c floor panel rear plate 2d floor tunnel 3 cabin 4 seat 5 engine 5a cooling water outlet 6 radiator 6a upper tank 7 cooling water circulation pipe 9 ring-shaped grommet 12 Grommet 13 mounting bolt

Claims (1)

[Scope of utility model registration request] 1. A body panel is provided with a floor panel for forming a floor of a cabin, an engine is provided at a rear portion of the floor panel, and a radiator is provided at a front portion thereof, and a space between a front plate and a rear plate of the floor panel is provided. In a cabover type vehicle in which a bottom tunnel in which the bottom plate is recessed upwardly is formed to extend in the front-rear direction, a cooling water circulation pipe line from a cooling water outlet of the engine to an upper tank of a radiator is provided. Arranged so as to extend through the front plate and the rear plate of the floor panel and extend along the upper surface of the floor tunnel.
An attachment device for a cooling water circulation pipe in a cab-over vehicle engine, characterized in that it is attached to a front plate of a floor panel via a grommet made of a soft elastic material such as rubber.