JPH09323554A - Vibration-proof device of heat exchanger for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost of an antirattler of a heat exchanger for a vehicle of vibration-proof rubber, etc., by eliminating a reinforcing member. SOLUTION: A rubber material of a holding member 31 is made to have a larger elastic coefficient than a rubber material of a vibration absorbing member 32, and the holding member 31 is made angular so that an area of a cross section orthogonal with a direction from a radiator 1 toward a bracket 2 becomes larger from the radiator 1 toward the bracket 2. Consequently, as rigidity of the holding member 31 is improved, it is possible to eliminate a reinforcing member. Additionally, absorption of vibration is carried out mainly by properly selecting rigidity of the vibration absorbing member 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration isolator for a vehicle heat exchanger that prevents vibration of a heat exchanger mounted on a vehicle.

[0002]

2. Description of the Related Art Conventionally, heat exchangers (for example, radiators)
As the vibration isolation device, a vibration isolation rubber 3 is generally used as shown in FIG. 4 (a). The anti-vibration rubber includes a flange portion 33 having an outer size larger than a diameter of an assembling hole formed in a bracket on the vehicle side to which the radiator 1 is assembled, and a fixing pin 1e for the radiator 1.
Is formed so as to have a pin support portion 36 for supporting the and the mounting portion 37 that is inserted into the assembly hole and positions the vibration-proof rubber.

A known method is to absorb the vibration of the radiator by determining the flexural rigidity (elastic property) of the flange portion 33 in consideration of the mass of the radiator 1, the frequency of vibration generated in the bracket 2, and the like. Therefore, a large number of types of anti-vibration rubber having different thicknesses and the like are required for the flange portion depending on the radiator 1 and the vehicle type to be mounted. A portion of the flange portion that absorbs vibration is a portion (vibration absorbing portion) 34 between the pin support portion 26 and the mounting portion 37.

[0004]

By the way, when the bending rigidity of the portion of the flange portion 33 that contacts the bracket 2 is small, the flange portion 33 is moved by the vibration force F acting on the anti-vibration rubber as shown in FIG. ) It deforms as shown in,
A vibration absorption failure occurs in which the vibration absorption unit 34 cannot effectively absorb the vibration.

Therefore, usually, a metal reinforcing member 35 having an L-shaped cross section extending radially outward from the mounting portion to the flange portion 33 is provided in the vibration isolating rubber 3 when the vibration isolating rubber is molded. It is buried along with molding. Therefore, the reinforcing member 3
In addition to the need for man-hours for burying No. 5, it hindered a reduction in the manufacturing cost of the anti-vibration rubber.

In view of the above points, an object of the present invention is to reduce the cost of a vibration proof device for a vehicle heat exchanger such as a vibration proof rubber by eliminating the reinforcing member.

[0007]

The present invention uses the following technical means in order to achieve the above object. Claim 1
In the invention described in 4, the holding member (31) engaging with the supporting member (2) has higher rigidity than the vibration absorbing member (32),
Moreover, the heat exchanger (2) is held via a vibration absorbing member (32).

As a result, the vibration of the heat exchanger (1) is mainly absorbed by the vibration absorbing member (32), while the holding member (31) mainly exhibits the function of holding the heat exchanger (1). . Therefore, while maintaining the rigidity of the vibration absorbing member (32) capable of effectively absorbing the vibration of the heat exchanger (1), the rigidity of the holding member (31) can be increased to such an extent that the above-described vibration absorption failure does not occur. it can. That is, since the reinforcing member (35) can be eliminated, the manufacturing cost of the vibration isolator for the vehicle heat exchanger can be reduced. In the invention according to claim 2, the rubber material of the holding member (31) is
It is characterized by having a larger elastic coefficient than the rubber material of the vibration absorbing member (32).

According to the third aspect of the invention, the holding member (3
1) is characterized in that the area of a cross section perpendicular to the direction from the heat exchanger (1) to the support member (2) increases as it goes from the heat exchanger (1) to the support member (2). To do.
As a result, the rigidity of the portion of the holding member (31) on the support member (2) side is increased, so that vibration absorption failure can be further suppressed.

Further, the portion of the holding member (31) on the side of the heat exchanger (1) is elastically deformed more easily than the portion on the side of the supporting member (2). Therefore, since the vibration of the heat exchanger (1) can be absorbed by utilizing the elastic deformation of the portion on the heat exchanger (1) side as compared with the case where the vibration absorption member (32) alone absorbs the vibration. Thus, vibration absorption can be performed for many types of heat exchangers (1) and vehicle types.

According to the invention described in claim 4, in the vibration absorbing member (32), the flange portion (32c) is held in a state where a part of the heat exchanger (1) is inserted in the main body portion (32a). The bottom portion (32b) is inserted into the through hole (31a) so that the bottom portion (32b) faces the support member (2) so as to be engaged with the heat exchanger (1) side end portion (31b) of the member (31). Characterize.

The reference numerals in parentheses of the above means indicate the correspondence with specific means described in the embodiments described later.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention shown in the drawings will be described. (First Embodiment) FIG. 1 is a front view showing a state where a vehicle radiator 1 is assembled to a bracket (support member) 2 provided on a vehicle body. Reference numerals 1a and 1b denote an upper tank portion and a lower tank portion for distributing and collecting engine cooling water to a core portion 1c composed of cooling fins (not shown) and a large number of flat tubes for heat exchange, and both tank portions 1a and 1b are provided. , Fixing pins 1d and 1e for assembling and fixing the radiator 1 to the vehicle are formed respectively.

Assembling the radiator 1 to the vehicle is as follows.
This is performed as follows. That is, as shown in FIG. 2, the fixing pin 1e of the lower tank portion 1b is assembled to the bracket 2 with the anti-vibration rubber 3 interposed therebetween, and then is not shown in the fixing pin 1d of the upper tank portion 1a. The mounting stay is inserted from the vehicle upper side (upper surface of the drawing) into the fixing pin 1d, and the mounting stay is fixed to the vehicle body by fastening means such as bolts.

Next, the anti-vibration rubber 3 forming the gist of this embodiment
Will be described (see FIG. 2). The anti-vibration rubber 3 forms an anti-vibration device for a vehicle heat exchanger that prevents the radiator 1 from vibrating. The anti-vibration rubber 3 engages with the bracket 2 to hold the radiator 1, and the holding member 31. And a radiator 1 interposed between the vibration absorbing member 32 and the radiator 1.

Both the holding member 31 and the vibration absorbing member 32 are made of an elastically deformable material (in the present embodiment,
Both are made of rubber), and the holding member 31
Is more rigid than the vibration absorbing member 32,
The material of the holding member 31 is a material having a larger elastic coefficient than that of the vibration absorbing member 32. Further, the holding member 31 has a cross section perpendicular to the direction from the radiator 1 to the bracket 2 (vertical direction on the paper) in order to further improve the rigidity of the portion of the holding member 31 on the bracket 2 side (the portion on the lower side of the paper). The area is formed in a mountain shape so that the area increases from the radiator 1 toward the bracket 2.

Further, a through hole 31a penetrating the holding member 32 in the direction from the radiator 1 to the bracket 2 is formed. In the through hole 31a, a main body portion 32a of a vibration absorbing member 32 described later and a bottom portion 32b are formed. Is inserted toward the bracket 2. Further, 31 b is an engaging portion for engaging the holding member 31 with the bracket 2, and this engaging portion 32 b is an engaging hole 2 a formed in the bracket 2.
The holding member 31 is engaged with the bracket 2 by being inserted into the bracket 2.

The vibration absorbing member 32 includes a cylindrical main body 32a, a bottom 32b closing one end of the main body 32a, and a flange 32c formed on the other end and extending radially outward. It has a hat-shaped cross-sectional shape. The fixing pin 1e is attached to the main body 32.
a so as to contact the inner wall of a and the bottom 32b.
And the flange portion 32c is inserted into the holding member 3
By engaging with the radiator 1 side end portion 31b of No. 1,
The radiator 1 has a holding member 31 via a vibration absorbing member 32.
Is held at

As shown in FIG. 2, the lower tank portion 1b and the flange portion 32c of the vibration absorbing member 32 are provided with a predetermined gap, and the vibration of the radiator 1 is mainly caused by the bottom portion 32b and the flange portion 32c. It is absorbed by the shear deformation. Next, features of the present embodiment will be described. According to the present embodiment, as described above, the rigidity of the holding member 31 is higher than that of the vibration absorbing member 32, so that the vibration of the radiator 1 is mainly absorbed by the vibration absorbing member 32, while
The holding member 31 mainly has a function of holding the radiator 1.

As a result, the rigidity of the vibration absorbing member 32 capable of effectively absorbing the vibration of the radiator 1 can be maintained, while the rigidity of the holding member 31 can be increased to the extent that the above-described vibration absorption failure does not occur. Therefore, the reinforcing member (3
Since 5) can be eliminated, it is possible to reduce the manufacturing cost of the anti-vibration rubber. Further, when the radiator 1 and the type of vehicle mounted are changed, the rigidity of the vibration-proof rubber 3 can be changed by changing the vibration absorbing member 32 using the holding member 31 as a common member. Therefore, as compared with the case where the entire anti-vibration rubber 3 is changed, it is possible to suppress the capital investment such as the mold cost accompanying the change of the molding die for the anti-vibration rubber. Therefore, the manufacturing cost of the anti-vibration rubber can be reduced.

Further, since the holding member 31 is formed of rubber and is formed in a mountain shape so that it becomes larger from the radiator 1 toward the bracket 2, the portion of the holding member 31 on the radiator 1 side is formed. , More easily elastically deformed than the part on the bracket 2 side. Therefore, radiator 1
The radiator 1 is also utilized by utilizing the elastic deformation of the holding member 31 on the side.
Since it is possible to absorb the vibration of the
Compared with the case where the vibration absorption is performed only by 2, it is possible to perform the vibration absorption for many types of radiators 1 and mounted vehicle types.

Further, by changing the vibration absorbing member 32, the rigidity of the vibration absorbing member 32 can be reduced or increased, so that the radiator 1 of many kinds can be obtained.
Also, it is possible to cope with the type of vehicle mounted by only changing the vibration absorbing member 32. (Second Embodiment) In this embodiment, in order to further improve the rigidity of the holding member 31, the holding member 31 is made of resin or metal.

According to this, since the rigidity of the holding member 31 is higher than that of the case where the holding member 31 is made of rubber, the shape of the holding member 31 may be cylindrical as shown in FIG. it can. Therefore, since the holding member 31 has a simple shape, the moldability of the holding member 31 is improved, and the manufacturing cost of the anti-vibration rubber can be further reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a state where a vibration proof device (vibration proof rubber) for a vehicle heat exchanger according to the present invention is mounted on a radiator.

FIG. 2 is an enlarged sectional view of a portion A of FIG.

FIG. 3 is a cross-sectional view of a vibration isolator (vibration isolator) for a vehicle heat exchanger according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a conventional rubber vibration isolator.

[Explanation of symbols]

1 ... Radiator (heat exchanger), 2 ... Bracket (support member), 3 ... Anti-vibration rubber (anti-vibration device for vehicle heat exchanger),
31 ... Support member, 32 ... Vibration absorbing member.

Claims (4)

[Claims] 1. A heat exchanger for a vehicle, which is interposed between a heat exchanger (1) mounted on a vehicle and a support member (2) provided on the vehicle for supporting the heat exchanger (1). The vibration isolator of claim 1, which is interposed between the holding member (31) that engages with the support member (2) and the holding member (31) and the heat exchanger (2), and is elastically deformable. A vibration absorbing member (32), wherein the holding member (31) has higher rigidity than the vibration absorbing member (32), and the heat exchanger (2) via the vibration absorbing member (32). A vibration isolator for a vehicle heat exchanger, characterized in that: 2. The holding member (31) and the vibration absorbing member (32) are formed of a rubber material, and the rubber material of the holding member (31) is a rubber of the vibration absorbing member (32). The vibration isolation device for a vehicle heat exchanger according to claim 1, which has a larger elastic coefficient than that of the material. 3. The holding member (31) has a cross-sectional area perpendicular to the direction from the heat exchanger (1) to the support member (2), and the holding member (31) has a cross-sectional area perpendicular to the support member (2). The vibration damping device for a vehicle heat exchanger according to claim 2, wherein the vibration damping device becomes larger toward (2). 4. The vibration absorbing member (32) includes a cylindrical main body (32a) and a bottom (32) for closing one end of the main body (32a).
b) and a flange portion (32c) formed on the other end side of the main body portion (32a) and extending radially outward, and the holding member (31) includes the heat exchanger (1) from the heat exchanger (1). A through hole (31a) penetrating the support member (2) is formed, and the vibration absorbing member (32) is a state in which a part of the heat exchanger (1) is inserted in the main body portion (32a). Then, the bottom portion (32b) is directed toward the support member (2) so that the flange portion (32c) engages with the heat exchanger (1) side end portion (31b) of the holding member (31). The vibration-proof structure according to claim 3, wherein the vibration-proof structure is inserted into the through hole (31a).