JP2003011680A - Radiator support structure - Google Patents

Abstract

(57) [Problem] To provide a radiator support structure in which the vibration reduction effect is prevented from decreasing with time and cost is reduced. A lower portion of a radiator is a support portion.
6 and 17 support the suspension member 18. The upper surface 15b of the radiator 15 is connected to the cross member 22 by a radiator support 21 made of a strip-shaped steel plate. When the radiator support 21 bends, the vibration of the radiator 15 is absorbed and reduced. For this reason, it is not necessary to attach a vibration-proof rubber to the fastening portion of the radiator support 21. That is, the upper end 21a of the radiator support is provided on the upper surface 15b, and the lower end 21b is provided on the cross member 22 without using the vibration isolating rubber.
Fastened at 3,24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator support structure mounted on a vehicle such as a truck or an automobile.

[0002]

2. Description of the Related Art Conventionally, as a radiator support structure, for example, there is one disclosed in Japanese Utility Model Laid-Open No. 1-149812. In this conventional technique, in order to reduce the vibration of the radiator, a bush (cushion rubber) made of rubber or the like is attached to an engaging hole of a bracket fixed to the vehicle body frame, and a guide pin provided on the upper surface of the radiator is installed in the bush. It is fitted.

[0003]

However, in the above-mentioned prior art, the cushion rubber deteriorates with the passage of time,
There is a problem that the effect of reducing the vibration of the radiator is reduced.

The present invention has been made by paying attention to such a conventional problem, and an object thereof is to prevent a reduction in vibration reducing effect with the passage of time and to reduce the cost of a radiator. To provide a support structure.

[0005]

[Means for Solving the Problems] Means for achieving the above-mentioned objects and their effects will be described below. The invention according to claim 1 is a radiator support structure for supporting a radiator on a vehicle body frame, wherein a lower portion of the radiator is supported on the vehicle body frame, and an upper portion of the radiator is connected to the vehicle body frame by a radiator support made of a strip-shaped steel plate. What is done is the summary.

According to this structure, the radiator support made of a strip-shaped steel plate that connects the upper portion of the radiator and the vehicle body frame is bent, and the vibration of the radiator is absorbed and reduced. Therefore, it is not necessary to attach an elastic body such as a vibration-proof rubber to the fastening portion of the radiator support. That is, one end of the radiator support is fastened to the upper part of the radiator and the other end is fastened to the vehicle body frame with bolts or the like without an elastic body such as a vibration-proof rubber.

Therefore, it is possible to prevent the vibration reducing effect from deteriorating with the passage of time, and the cost of parts and assembly are reduced by the amount of the elastic body such as a vibration proof rubber being unnecessary. can do. Further, since the radiator support is a strip-shaped steel plate, it is possible to reduce the weight as compared with the case where the support is made of a rigid solid rod or a hollow rod.

According to a second aspect of the invention, in the radiator support structure according to the first aspect, the radiator support is obliquely downward from the upper portion of the radiator to which the upper end portion is fastened to the front side of the radiator with respect to the vehicle. The gist is that the lower end portion of the radiator support extends and is fastened to the vehicle body frame at substantially the same height as the lower portion of the radiator.

According to this structure, the radiator support is longer than the vertical dimension of the radiator and is easily bent, so that the vibration of the radiator can be dispersed or absorbed by the entire radiator support. This allows
The radiator support can effectively suppress the movement of the radiator. At the same time, the radiator support does not need to use a high metal material such as a spring steel plate, and the ordinary steel plate provides a sufficient vibration damping effect, so that the cost can also be reduced.

According to a third aspect of the present invention, in the radiator support structure according to the first or second aspect, the radiator support includes a bent portion near an upper end portion that is fastened to an upper portion of the radiator, and the vehicle body frame. The gist of the present invention is to have at least three bent portions including a bent portion near the lower end portion that is fastened to.

According to this structure, since the belt-shaped radiator support is easily bent around the central portion thereof, it is possible to further absorb and reduce the vibration of the radiator.
The invention according to claim 4 is the radiator support structure according to any one of claims 1 to 3, wherein a lower portion of the radiator is supported by the vehicle body frame at two positions apart from each other in the left-right direction of the vehicle, The gist of the present invention is that the upper end of one radiator support is fastened at a portion of the upper portion of the radiator that corresponds to substantially the center position of the two support portions.

According to this structure, the lower portion of the radiator is stably supported by the vehicle body frame by the two support portions which are separated in the left-right direction of the vehicle. Further, since the upper end portion of one radiator support is fastened at a portion of the upper portion of the radiator that corresponds to approximately the central position of the two supporting portions,
Only one radiator support can support the upper part of the radiator on the body frame in good balance. As a result, the vibration of the radiator can be effectively reduced by the deflection of one radiator support.

According to a fifth aspect of the present invention, in the radiator support structure according to the fourth aspect, elastic members such as a vibration-proof rubber are attached to the two support portions in the lower portion of the radiator. That is the summary.

According to this structure, the vibration transmitted from the vehicle body frame to the radiator can be absorbed and reduced by the elastic bodies such as the vibration-proof rubbers mounted on the two supporting portions.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a cab-over type truck radiator will be described below with reference to the drawings.

In the cab-over type truck shown in FIG.
In the space below the cab floor 11, the seat 12
The engine 13 is mounted at a position substantially right below. A radiator fan 14 is arranged in front of the engine 13 (left side in FIG. 1), and a radiator 15 is arranged in front of the radiator fan 14 in the vehicle.

As shown in FIGS. 1 and 2, the lower portion 15a of the radiator 15 is supported by a suspension member 18, which is a part of the vehicle body frame, at two support portions 16 and 17 which are separated from each other in the left-right direction of the vehicle. ing. The left and right ends of the suspension member 18 have left and right side rails 19,
20 respectively.

The upper surface (upper part) 15b of the radiator 15 is
A radiator support 21 made of a strip-shaped steel plate is connected to a cross member 22 located in front of the vehicle with respect to the suspension member 18 at a part of the vehicle body frame (FIG. 2).
reference). The left and right ends of the cross member 22 are coupled to the side rails 19 and 20, respectively.

The radiator support 21 has an upper end portion 2
1a extends obliquely downward from the upper surface 15b of the radiator 15 on the vehicle front side of the radiator 15 (see FIGS. 1 and 3). Also, radiator support 21
The lower end portion 21b of the radiator 21 is fastened to the cross member 22 at the same height as the lower portion 15a of the radiator 15.

The radiator support 21 is a normal steel plate, for example, a steel plate made of SPH270C-OD, and has a thickness of about 3.2 mm and a width of about 30 mm. As shown in FIG. 4, the radiator support 21 has a bent portion 21c near its upper end 21a, a bent portion 21d near its lower end 21b, and both bent portions 2c.
Two bent portions 21e and 2 provided between 1c and 21d
Four bent portions including 1f are formed by bending. The bent portion 21f is used for the radiator 15
Is bent to avoid interference with peripheral parts such as an intercooler (not shown).

The upper end 21a of the radiator support 21
Is a substantially central portion of the upper surface 15a of the radiator 15, that is, the support portions 16 and 1 at the two positions on the upper surface 15a.
It is designed to be fastened at a portion corresponding to a substantially central position of 7.

Through holes 21g and 21h, into which bolts 23 and 24 are inserted, are formed in the upper end portion 21a and the lower end portion 21b of the radiator support 21, respectively. Further, a through hole (not shown) into which the bolt 23 is inserted is bored in the upper tank upper wall forming the upper surface 15b of the radiator 15, and a nut (in which the bolt 23 is screwed) is formed on the inner surface of the upper wall. (Not shown) is fixed. The upper end 21a of the radiator support 21 is fastened to the upper surface 15b by passing a bolt 23 through the through hole 21g of the radiator support 21 and the through hole of the upper wall of the radiator support 21 and screwing the bolt 23 into a nut fixed to the inner surface of the upper wall. (See FIG. 3).

On the other hand, the lower end portion 2 of the radiator support 21
1b is fastened to the cross member 22 by passing the bolt 24 through the through hole 21h of the support 21 and the through hole (not shown) of the cross member 22 and screwing the bolt 24 into the nut 27 fixed to the back surface of the member 22. (See FIG. 3).
In FIG. 3, reference numerals 25 and 26 are washers.

Next, the structure of the support portions 16 and 17 for supporting the lower portion 15a of the radiator 15 on the suspension member 18 will be described with reference to FIGS. Support part 1
6 and 17 have the same configuration, the same reference numerals are given to the respective components of the supporting portions 16 and 17, and only the supporting portion 17 will be described here.

On the lower portion 15a of the radiator 15, that is, on the lower wall of the radiator 15, recesses 15c are formed at two locations corresponding to the supporting portions 16 and 17, and nuts 28 are fixed to the inside of each recess 15c by adhesion or the like. (Fig. 7
reference).

The support portion 17 is provided with a bracket 29 fixed to the radiator 15 side and a bracket 30 fixed to the suspension member 18 side. Bracket 29
Has two mounting portions 31 and 32 that form a substantially right angle.
A through hole 31a into which a small diameter portion 33a at the tip of a cylindrical cushion 33 which is an elastic body such as a vibration-proof rubber is fitted is formed in the central portion of the mounting portion 31. The mounting portion 32 has a cut-and-raised claw 32a and two bolt insertion holes 32b, 32.
b are formed.

On the other hand, the bracket 30 has a mounting portion 34 which is substantially right angled, and a fixing portion 35 which is fixed to the suspension member 18. The bracket 2 is attached to the mounting portion 34.
Groove 34a with which the claw 32a of 9 engages, and the bolt insertion hole 3 corresponding to the bolt insertion holes 32b, 32b of the bracket 29.
4b and 34b are formed, the nut 34
c and 34c are fixed. Further, the support portion 17 is
A cylindrical cushion 45, which is an elastic body such as a vibration-proof rubber, a sleeve 36 press-fitted into the cushions 33 and 45, washer plates 37 and 38 fixed to the end faces of the cushions 33 and 45 by adhesion or the like, and a bolt 39. And two bolts 40, 4 for fixing both brackets 29, 30
With 0 and. Note that reference numerals 41 and 42 in FIG. 5 are washers.

The lower portion 15a of the radiator 15 is attached to the support portion 1
The work of attaching the suspension member 18 to the suspension members 18 and 16 is performed as follows. Supports 16, 17
For each of the above, a washer plate 37 is fixed to the end surface of the cushion 33 on the side opposite to the small diameter portion 33a by adhesion or the like, and the sleeve 36 is press-fitted into the cushion 33. next,
The through hole 31a of the bracket 29 is fitted into the small-diameter portion 33a of the cushion 33, and in this state, the cushion 45 is press-fitted into the sleeve 36 protruding from the cushion 33 so that the mounting portion 31 of the bracket 29 is fixed by the cushions 33, 45. Hold it. Next, the washer plate 38 is fixed to the end surface of the cushion 45 by adhesion or the like, and the bolt 39 is attached to the sleeve 3.
It is threaded on the nut 28 through 6 and the bolt 39 is tightened. In this way, the claw 32a of the bracket 29 fixed to the lower portion 15a of the radiator 15 is engaged with the groove 34a of the bracket 30 fixed to the suspension member 18 and temporarily placed. In this state, the bolts 40, 40 are passed through the bolt insertion holes 32b, 32b of the bracket 29 and the bolt insertion holes 34b, 34b of the bracket 30, respectively, and screwed into the nuts 34c, 34c, and the both bolts 40 are tightened. Thus, the lower portion 15a of the radiator 15
However, the suspension member 18 is supported by the support portions 16 and 17.
Supported by.

According to the embodiment configured as described above, the following operational effects are exhibited. (A) The upper surface 15b of the radiator 15 and the cross member 22
Radiator support 2 made of strip-shaped steel plate that connects with
1 bends in the direction of the arrow in FIG.
The vibration of No. 5 is absorbed and reduced. Therefore, it is not necessary to attach an elastic body such as a vibration-proof rubber to the fastening portion of the radiator support 21. That is, the upper end 21a of the radiator support 21 is fastened to the upper surface 15b of the radiator 15 and the lower end 21b thereof is fastened to the cross member 22 with bolts 23 and 24 without an elastic body such as a vibration-proof rubber.

Therefore, it is possible to prevent the vibration reducing effect from deteriorating with the passage of time, and the cost of parts and the assembly are reduced by the amount that the elastic body such as the vibration proof rubber is not required, and the cost is reduced. can do.

(B) Since the radiator support 21 is a strip-shaped steel plate, the weight can be reduced and the structure is simple as compared with the case where the support 21 is made of a rigid solid rod or a hollow rod. It can be easily manufactured.

(C) The radiator support 21 is a strip-shaped steel plate that is longer than the vertical dimension of the radiator 15 (see FIGS. 1 and 3), and has a shape that easily bends in the direction of the arrow in FIG. Vibrations can be dispersed or absorbed by the entire radiator support 21. In other words, the radiator support 21 can disperse or absorb the vibration of the radiator 15 as a whole by bending the radiator support 21 in the arrow direction around the portion A in FIG. As a result, the movement (vibration) of the radiator 15 can be performed by one component of the radiator support 21 without using a vibration proof rubber or the like.
Can be effectively suppressed.

(D) In the radiator support 21, the bent portions 21e, 21 are provided at two positions between the bent portion 21c near the upper end 21a and the bent portion 21d near the lower end 21b.
f is provided. Therefore, the radiator support 21
Is more easily bent in the arrow direction around the portion A, and vibration of the radiator 15 can be absorbed and reduced.

(E) The radiator support 21 does not need to use a high metal material such as a spring steel plate,
For example, a steel plate made of SPH270C-OD can provide a sufficient vibration damping effect, and this can also reduce the cost.

(F) The lower portion 15a of the radiator 15 is stably supported by the suspension member 18 by the two support portions 16 and 17 which are separated from each other in the lateral direction of the vehicle. In addition, the upper end portion 21a of one radiator support 21 is attached to the radiator 1
The upper surface (upper part) 15b of No. 5 is fastened at a portion corresponding to a substantially central position of the supporting portions 16 and 17. Therefore, only one radiator support 21 can be used for the radiator 1.
It is possible to support the upper surface 15b of the No. 5 on the cross member 22 with good balance. Thereby, the vibration of the radiator 15 can be effectively reduced by the deflection of one radiator support 21.

(G) Two cushions 33 and 45, which are elastic bodies such as vibration-proof rubber, are attached to the two support portions 16 and 17 in the lower portion 15a of the radiator 15.
Therefore, from the suspension member 18 to the radiator 1
It is possible to absorb and reduce the vibration transmitted to the vehicle 5 by the cushions 33 and 45 attached to the supporting portions 16 and 17.

(H) When the lower portion 15a of the radiator 15 is attached to the suspension member 18 by the supporting portions 16 and 17, the claw 32a of the bracket 29 fixed to the lower portion 15a is provided with the groove 34a of the bracket 30 fixed to the suspension member 18. Can be temporarily placed by engaging with. In this state, attach the bolts 40, 40 to the nuts 34c, 3
Both brackets 29 and 30 of the support portions 16 and 17 can be easily fastened by screwing and fastening them to the respective 4c.

[Modification] The present invention can be modified and embodied as follows. In the above-described one embodiment, the present invention is applied to the radiator of the cab-over type truck, but the present invention is not limited to the cab-over type truck, but is widely applied to vehicles having a space where the radiator support 21 can be arranged on the vehicle front side of the radiator. it can. For example, the present invention can be applied to a so-called van type vehicle in which an engine and a radiator are arranged below a driver's seat, a so-called midship type vehicle in which an engine is mounted substantially in the center in the vehicle front-rear direction, and the like.

In the above embodiment, the radiator support 21 is provided with four bent portions, but in the present invention, at least one bent portion is provided between the bent portions 21c and 21d. It applies to all things.

In the above-described embodiment, the present invention is applied to the radiator 15 having a shape as shown in FIG. 2, but the present invention is not limited to the radiator 15 as shown in the figure, but is widely applicable to general radiators. Applied.

In the above embodiment, the material, thickness and width of the radiator support 21 are shown as an example, but the radiator support 21 to which the present invention is applied is limited to such material, thickness and width. Not done.

In the above embodiment, the present invention is applied to the radiator 15 having a shape as shown in FIG. 2. However, the present invention is not limited to the radiator 15 as shown in the figure, but is widely applicable to general radiators. Applied.

In the above embodiment, one radiator support 21 is used, but the same support 21 is used.
Two or more may be used. That is, the upper surface 15b of the radiator 15 is attached to the two radiator supports 2
1, 21, a body frame, for example, a cross member 22
May be connected to.

[Brief description of drawings]

FIG. 1 is a side view showing a driver's seat portion of a cab-over type truck having a radiator support structure according to an embodiment.

FIG. 2 is a perspective view showing a support structure for the radiator.

FIG. 3 is a side view showing the support structure.

FIG. 4 is a perspective view showing a radiator support used in one embodiment.

FIG. 5 is an exploded perspective view of a support structure in a lower portion of a radiator.

FIG. 6 is a perspective view showing a pair of brackets used in the support structure.

FIG. 7 is a cross-sectional view showing the support structure.

[Explanation of symbols]

15 ... radiator, 15a ... lower part of radiator, 15b
... Upper surface of radiator (upper part), 16, 17 ... Supporting part, 1
8 ... Suspension member (body frame), 21 ... Radiator support, 21c to 21f ... Bent portion, 22 ...
Cross member (body frame).

Claims (5)

[Claims] 1. A radiator support structure for supporting a radiator on a vehicle body frame, wherein a lower portion of the radiator is supported on the vehicle body frame, and an upper portion of the radiator is connected to the vehicle body frame by a radiator support made of strip-shaped steel plate. A radiator support structure characterized in that 2. The radiator support extends obliquely downward from the upper part of the radiator to which the upper end part is fastened in the vehicle front side of the radiator, and the lower end part of the radiator support is substantially the same as the lower part of the radiator. The radiator support structure according to claim 1, wherein the radiator support structure is fastened to a vehicle body frame at a height position. 3. The radiator support includes at least three bent portions including a bent portion near an upper end portion fastened to an upper portion of the radiator and a bent portion near a lower end portion fastened to the body frame. The radiator support structure according to claim 1 or 2, further comprising a bent portion. 4. A lower portion of the radiator is supported by a vehicle body frame at two locations apart from each other in the left-right direction of the vehicle, and an upper end portion of one radiator support is an upper portion of the radiator at the two support portions. The support structure for the radiator according to any one of claims 1 to 3, wherein the support structure is fastened at a portion corresponding to a substantially central position of the radiator. 5. The radiator support structure according to claim 4, wherein elastic members such as a vibration-proof rubber are attached to the two support portions in the lower portion of the radiator.