JPH11310972A - Vibration damping panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid vibration damping panel combining a soundproof effect besides a sure display of vibration damping action. SOLUTION: The vibration damping panel 1 has a substrate 10, in which a plurality of rising ribs 11 extended in the longitudinal direction are formed to an internal surface at intervals in the cross direction, and a tabular core materials 20 having hollow section elongated in the longitudinal direction. The core materials 20 are arranged while being abutted against vibration-isolation materials 2 laid on the internal surface of the substrate 10 under the state, in which the direction that the hollow sections 22a are extended and the direction that the rising ribs 11 are elongated are crossed at right angles in a plane parallel with the internal surface of the substrate 10 among the rising ribs 11 of the substrate 10. The rising ribs 11 and the core materials 20, 20 adjacent to the rising ribs 11 are joined and unified by welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal damping panel used for, for example, floor materials, wall materials, and ceiling materials for ships and vehicles.

[0002]

2. Description of the Related Art As a conventional vibration damping panel, a sheet-like vibration damping rubber is attached to an outer surface of a substrate, or a metal extruded shape having a plurality of hollow portions extending in a length direction is used. Pasting a sheet-like anti-vibration rubber on the inner peripheral surface of the hollow part,
There is a hollow body filled with a foaming agent as a vibration isolator, or a honeycomb formed.

[0003]

However, since the panel material in which the sheet-like anti-vibration rubber is adhered to the outer surface of the substrate does not have a sound-proofing function, when shielding external noise, a separate sound-proofing means is required. Had to be taken. In addition, a panel material in which an anti-vibration rubber is attached to the inner peripheral surface of the hollow portion or a foaming agent is filled in the hollow portion makes it difficult to attach or fill the anti-vibration rubber or the foaming agent in the hollow portion. For this reason, it is difficult to apply and fill the vibration isolating rubber or the foaming agent over the entire hollow portion, and therefore, there is a problem that a portion lacking the vibration damping action is easily generated. Further, the panel material formed in a honeycomb shape has a drawback in that the mounting place is restricted due to its distorted shape. Further, the conventional panel materials have a drawback that they are easily bent.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned technical background, and it is an object of the present invention to provide a robust vibration damping panel which can reliably exert a vibration damping effect and has a soundproofing effect. With the goal.

[0005]

In order to achieve the above-mentioned object, a vibration-damping panel according to the present invention is provided on a substrate having a plurality of rising ribs extending in a length direction provided on an inner surface thereof at intervals in a width direction. And a plate-shaped core material having a hollow portion extending in the length direction or a hollow portion forming concave portion extending in the length direction and forming a hollow portion between the inner surface of the substrate and the rising rib of the substrate. In addition, the core material may be provided such that the direction in which the hollow portion or the recess for forming the hollow portion extends and the direction in which the rising rib extends intersect in a plane parallel to the inner surface of the substrate, and that the core material is laid on the inner surface of the substrate. The rising rib and a core material adjacent to the rising rib are joined and integrated while being arranged in contact with the vibration material.

According to this, between the rising ribs of the substrate, the core material intersects in a plane parallel to the inner surface of the substrate with the extending direction of the hollow portion or the hollow forming recess and the extending direction of the rising rib. In addition, since the rising rib and the core material adjacent to the rising rib are integrally joined, the damping panel becomes hard to bend and becomes robust.

In addition, since the core material is disposed between the rising ribs of the substrate in contact with the vibration isolating material laid on the inner surface of the substrate, the vibration damping panel can reliably suppress the transmission of vibration. Becomes

Further, the external noise can be shielded by the hollow portion of the core material or the hollow forming recess.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, (1) is a damping panel, (1)
Reference numeral 0) denotes a substrate, and reference numerals (20)... Denote plate-shaped core members which are attached in an overlapping state above the inner surface of the substrate (10).

The substrate (10) is formed by cutting an aluminum (including its alloy) extruded material having a predetermined cross-sectional shape into a predetermined length in a plane perpendicular to the extrusion direction, thereby producing an extruded aluminum material. And
As shown in FIG. 2, a plurality (three in FIG. 3) of rising ribs (11) (11) (11) extending in the length direction (the direction of arrow A) are formed on the inner surface of the plate and have a flat shape. They are continuously provided at predetermined intervals in the width direction.

The rising rib (1) of the substrate (10)
As shown in FIG. 1, on the inner surface between 1) and (11), a sheet-like anti-vibration rubber (2) made of Gotyl rubber or the like is provided.
Are laid along the length direction (b) of the substrate (10). The vibration-proof rubber (2) is bonded to the substrate (10) with an adhesive.
Is affixed to the inner surface of the.

Each core material (20) is provided on the substrate (10).
In the same manner as described above, an aluminum extruded material having a predetermined cross-sectional shape is cut into a predetermined length on a plane perpendicular to the extrusion direction, and is made of an extruded aluminum material, as shown in FIG. A plurality of (three in the figure) rectangular tube portions (22) (2) having an inverted trapezoidal cross section extending in the length direction (direction of arrow B) arranged at predetermined intervals in the width direction.
2) and (22) and a flat plate-shaped outer plate (21) in which these square tube portions (22) are integrally connected at the upper bottom thereof.

As shown in FIG. 1, these core members (20) are formed by rising ribs (11) of the substrate (10).
Between (11), the direction (b) in which the hollow portion (22a) of the rectangular tube portion (22) extends and the direction (a) in which the rising rib (11) extends are in a plane parallel to the inner surface of the substrate (10). It is arranged so as to be orthogonal and the lower bottom portion is in contact with the vibration isolating rubber (2), and is elastically supported by the vibration isolating rubber (2).

(3) (3) (3) The substrate (10)
Of each of the rising ribs (11) and the core material (2) adjacent thereto.
This is a strip-shaped aluminum-made extruded-shaped contact plate used for bonding the components (0) and (20). Each of the backing plates (3) straddles the rising rib (11) of the substrate (10), and two core members (2) adjacent to the rising rib (11).
0) and (20) are arranged along the rising ribs (11) in such a manner that both ends in the width direction abut on the flat plate portions (21) and (21). The both end surfaces in the width direction of the backing plate (3) and the outer plate portions (21) (21) of the core members (20) and (20).
Is joined by intermittent fillet welding by a fusion welding method such as MIG, TIG, or laser welding, and the back surface of the backing plate (3) and the upper end surface of the rising rib (11) are solid-phase welding. Are joined by a friction stir welding method, which is one of the methods. (W) shows a welded portion welded by a fusion welding method and a friction stir welding method.

The friction stir welding method will be described below. That is, as shown in FIG. 4A, a large-diameter cylindrical rotor (61) and a small-diameter probe (62) integrally provided on the axis of the end surface (61a) of the rotor (61). The probe (62) is pierced from the surface of the backing plate (3) while rotating the rotor (61) and rotating the probe (62) using a joining tool (60) having Insert the part into the rising rib (11). It is desirable that the insertion be performed until the end surface (61a) of the rotor (61) comes into contact with the surface of the backing plate (3), since the frictional heat can be generated more. Then, with the probe inserted, the probe (62) is moved along the rising rib (11), and the vicinity of the contact portion with the probe (62) is softened by frictional heat. Probe (62)
With the rotation and movement of the probe, the softened portion of the backing plate (3) and the softened portion of the rising rib (11) are agitated and mixed, and the probe (6) receives the advancing pressure of the probe (62).
The plastic flow is performed in such a manner that the probe (62) goes backward in the traveling direction of the probe (62) so as to fill the passage groove of (2), and then the frictional heat is rapidly lost to solidify by cooling. This phenomenon is the probe (62)
Are sequentially repeated with the movement of the fin, and finally, as shown in FIG. 3B, the back surface of the backing plate (3) and the upper end surface of the rising rib (11) are joined.

Such a friction stir welding method is described in MIG, T
Compared to fusion welding methods such as IG and laser welding, it has advantages such as less deformation due to thermal distortion during joining. Therefore, the backing plate (3) and the rising rib (11) joined by friction stir welding are joined in an extremely good joining state. Further, according to the friction stir welding, the joining between the backing plate (3) and the rising rib (11) covered with the corresponding plate (3) can be performed from the surface side of the backing plate (3). This also has the advantage that the efficiency of the joining operation is significantly improved. The joining of the backing plate (3) and the core members (20) and (20) may be performed by this friction stir welding.

In this way, the rising rib (11) and the two core members (20) and (20) adjacent thereto are joined and integrated by welding via the backing plate (3).
The desired vibration damping panel (1) shown in FIG.

In the vibration damping panel (1) having the above structure, since the substrate (10), the core material (20), and the backing plate (3) are all made of extruded aluminum, it is lightweight and the production efficiency is low. It is expensive.

The rising rib (11) of the substrate (10)
(11) Between the core material (20), the extending direction (b) of the hollow portion (22a) of the rectangular tube portion (22) and the rising rib (1).
The extending direction (a) of 1) is arranged so as to be orthogonal to a plane parallel to the inner surface of the substrate (10), and the rising rib (11) and the core material (20) adjacent thereto are joined together. Because of this, it is hard to bend and extremely strong.

Further, the hollow part (22a) of the core material (20)
… Can shield external noise, and can exhibit a soundproofing effect.

In addition, since the core member (20) is arranged in contact with the vibration isolating rubber (2), even if external vibration is applied to the core member (20), the vibration is transmitted to the substrate (10). Can be reliably suppressed.

Further, since the vibration isolating rubber (2) is sandwiched between the substrate (10) and the core material (20), its surface is not exposed to the outside. For this reason, it is possible to prevent a problem that the anti-vibration rubber (2) is deteriorated due to rainwater or the like so that the anti-vibration rubber (2) does not perform its function, and therefore, it is possible to maintain soundness of the anti-vibration rubber (2) for a long period of time. It has become.

Further, the width of the core material (20) is
0) Even if it is smaller than the length dimension, the heartwood (2
0) can be arranged between the rising ribs (11) and (11), so that when the core member (20) is manufactured by extrusion, the width of the core member (20) can be set small. Therefore, a thin core material (20) having a thickness of, for example, 0.4 to 0.5 mm can be used, and the vibration damping panel (1) can be made lighter.

Thus, each rising rib (1) of the substrate (10)
As shown in FIG. 5, a backing plate used to join 1) and two core members (20) and (20) adjacent thereto may be used. Patch plate (3 ') shown in the figure
Is made of an extruded aluminum material, and has a strip (3a ') and pressing pieces (3b') and (3b ') protruding from both ends in the width direction of the strip (3a'). ) And a concave portion (3c ′) for fitting a rising rib provided on the back surface in the width direction intermediate portion of the band plate portion (3a ′). And
After the upper end of the rising rib (11) is fitted into the fitting recess (3c ') and fixed to the fitting recess (3c'), the abutment plate (3 ') is in contact with the outer surfaces of the holding pieces (3b) and (3b). Heartwood (2
0) and (20) are joined to the outer surfaces of the outer plate portions (21) and (21) by intermittent fillet welding.
') And the upper end of the rising rib (11) were joined by the friction stir welding method described above.

In addition, as shown in FIG. 6, the rising rib (11) and the core members (20) and (20) adjacent to the rising rib (11) are directly used without using the contact plates (3) and (3 '). You may join. That is, a joining strip plate (11a) is continuously provided at the upper end of the rising rib (11) shown in the same figure in a T-shaped cross section, and both ends in the width direction of the strip plate section (11a). Part and outer plate part of core material (20) (20) (21) (21)
And the outer surface of the strip portion (11a) and the outer plate portion (21).
It is joined by butt welding so that the outer surface of (21) is flush with the outer surface.

The core material (20) is shown in FIGS.
It may be made of an extruded aluminum material having a cross-sectional shape as shown in FIG.

The core member (30) shown in FIG. 3A includes a plurality of (four in FIG. 4) square tubular portions (32) each having a hexagonal cross section and extending in the length direction and arranged in a line in the width direction. In addition, the adjacent square tube portions (32) are connected to each other at the side tops. And, on the remaining side apex of the rectangular tube portions (32) (32) located at both ends in the width direction, the oblique plate portions (33) (33) and (33) (33) are provided with the rectangular tube portions. At the tip of the oblique plate portions (33) and (33), the flat plate portions (34) and (3) protrude outward in the oblique direction.
4) protrudes toward the side, and furthermore, this flat plate portion (3
4) The distal ends of (34) are connected by a connecting plate (35). In addition, (32a) ... is the hollow part of each square tube part (32) ... The core material (40) shown in the figure (b) has a rhombic cross section extending in the length direction arranged in a line in the width direction. A plurality (three in the figure) of square tube portions (42) ...
And the adjacent square tube portions (42) are connected to each other at the side tops. Then, the oblique plate portions (43), (43), (4)
3) (43) is protruded outward in the oblique side direction of the rectangular tube portion, and the distal ends of the oblique plate portions (43) and (43) are connected by a connecting plate portion (42). Department (4
3) The upper crown of the upper and lower crowns is connected by a flat outer plate portion (41). In addition,
(42a) are hollow portions of the respective rectangular tube portions (42). The core material (50) shown in FIG. 1C is the core material (20) shown in FIGS. 1, 7A and 7B. ) (30) and (40) do not have hollow portions (22a), (32a) and (42a), and have a sinusoidal cross section, and the flow direction is the width direction. . Then, the hollow forming recesses (50a) (50a) (50a) extending in the length direction on the back side of each top of the wave.
a), and a hollow portion is formed between the substrate and the inner surface of the substrate (10). This heartwood (5
0) indicates that the extending direction of the hollow forming recess (50a) and the extending direction (a) of the rising rib (11) are between the rising ribs (11) and (11) of the substrate (10). The wave is arranged in a manner orthogonal to a plane parallel to the inner surface, and in a manner such that each trough of the wave comes into contact with the vibration isolating rubber (2). Although not shown, a core material having a rectangular cross section or a sawtooth shape may be used as the core material.

The embodiment of the present invention has been described above.
The present invention is not limited to the above embodiment. For example, the rising rib and the core material adjacent thereto may be joined and integrated by an adhesive.

[0030]

As described above, in the vibration damping panel according to the present invention, the core material is provided between the rising ribs of the substrate so that the direction in which the hollow portion or the recess for forming the hollow portion extends and the direction in which the rising ribs extend extend from the substrate. Are arranged so as to intersect in a plane parallel to the inner surface of the inner rib, and since the rising rib and the core material adjacent thereto are joined and integrated, it is difficult to bend,
It has the advantage of being sturdy, and furthermore, the core material is disposed between the rising ribs of the substrate in contact with the vibration isolator laid on the inner surface of the substrate, so that the transmission of vibration can be suppressed reliably. It has the advantage that. Further, there is an advantage that sound can be isolated by the hollow portion of the core material or the hollow forming recess.

Therefore, according to the present invention, it is possible to provide an extremely rugged vibration damping panel which can reliably exert a vibration damping effect and also has a soundproofing effect.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view showing a vibration damping panel according to an embodiment of the present invention.

FIG. 2 is a partially omitted perspective view showing an exploded view of the vibration damping panel.

3A and 3B are diagrams illustrating the vibration damping panel, wherein FIG. 3A is a diagram viewed from a side, and FIG. 3B is a diagram viewed from a front.

FIG. 4 is an enlarged view of FIG. 3 (b) for explaining a method of joining a rising rib and a backing plate in the vibration damping panel, where (a) shows a state in the middle of joining and (b) is a state after joining; It is a figure showing a state.

FIG. 5 is a view corresponding to FIG. 3 (b), showing a modification of the backing plate.

FIG. 6 is a view corresponding to FIG. 3B in which the rising ribs and the core are joined without using a backing plate.

FIGS. 7A, 7B and 7C are cross-sectional views each showing a modified example of a core material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vibration suppression panel 2 ... Vibration-proof rubber (vibration-proof material) 3 ... Backing plate 10 ... Substrate 11 ... Rising rib 20, 30, 40, 50 ... Core material 22a, 32a, 42a ... Hollow part 50a ... Hollow part forming recess W: weld

Claims (1)

[Claims] A substrate (1) provided with a plurality of rising ribs (11) extending in a length direction on an inner surface thereof at intervals in a width direction.
0) and a hollow portion (22a) extending in the longitudinal direction, or a plate-shaped portion having a hollow forming recess (50a) extending in the longitudinal direction and forming a hollow portion between the inner surface of the substrate (10). Heartwood (2
0), and the core material (2) is provided between the rising ribs (11) of the substrate (10).
0) is such that the extending direction (b) of the hollow portion (22a) or the concave portion (50a) for forming the hollow portion and the extending direction (a) of the rising rib (11) are within a plane parallel to the inner surface of the substrate (10). And is disposed in contact with the vibration isolator (2) laid on the inner surface of the substrate (10), and the rising rib (11) is joined to the core (20) adjacent thereto. A vibration control panel characterized by being integrated.