Novel anti-vibration sound-absorbing conductive foam

Abstract

The utility model discloses novel anti-vibration sound-absorbing conductive foam which comprises first foam, a protective outer frame is arranged on the outer side of the upper end of the first foam, second foam is arranged at the upper end in the protective outer frame, and a first rubber pad is arranged above the side, located in the protective outer frame, of the first foam. A second rubber pad is arranged on the lower portion of the side, located in the protective outer frame, of the second foam, matched limiting grooves are formed in the sides, close to each other, of the first rubber pad and the second rubber pad, air bags are arranged in the two limiting grooves located in the same vertical plane, and a plurality of sound absorption grooves distributed in a matrix mode are formed in the upper end of the second foam. The sound absorption grooves are filled with sound insulation particles, and a conductive cloth layer is arranged on the side, away from the second rubber pad, of the second foam. The conductive foam is simple in structure and good in impact resistance and has good sound absorption and noise reduction functions, and the service life of the conductive foam is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive foam, in particular to a novel vibration-resistant and sound-absorbing conductive foam. Background Art

[0002] Conductive foam is a flame-retardant sponge with a conductive cloth wrapped on the outer surface. It has good surface conductivity and can be well fixed to the device to be shielded with adhesive tape. A layer of conductive foam is set on some devices inside the mobile terminal to achieve the effects of conductivity, anti-static and reduction of electromagnetic radiation. The foam currently used has poor stability and mainly relies on its own plastic characteristics to cushion and resist vibration. It is easy to deform during long-term use. In addition, conductive foam is more sensitive to sound waves of specific frequencies and may have limited absorption effect on sound waves of other frequencies. This means that for sound waves outside certain specific frequency ranges, the sound absorption effect of conductive foam is not very obvious, which is not conducive to the use of conductive foam. For this reason, we have proposed a new type of anti-vibration and sound-absorbing conductive foam. Utility Model Content

[0003] To address the above-mentioned issues, the present invention provides a novel vibration-resistant and sound-absorbing conductive foam. This solves the problem that currently used foams have poor stability, primarily relying on their plastic properties to cushion vibrations, and are prone to deformation during long-term use. Furthermore, conductive foams are more sensitive to sound waves of certain frequencies and may have limited absorption effects on sound waves of other frequencies. This means that for sound waves outside of certain frequency ranges, the sound absorption effect of conductive foams is not very significant, making their use unfavorable.

[0004] A new type of vibration-resistant and sound-absorbing conductive foam in the present invention includes a first foam, a protective outer frame is provided on the outer side of the upper end of the first foam, a second foam is provided on the upper end of the protective outer frame, a first rubber pad is provided on the upper side of the first foam located inside the protective outer frame, and a second rubber pad is provided on the lower side of the second foam located inside the protective outer frame. Matching limiting grooves are provided on the side where the first rubber pad and the second rubber pad are close to each other, and air bags are provided in the two limiting grooves located in the same vertical plane. A plurality of sound-absorbing grooves arranged in a matrix are provided on the upper end of the second foam, and the sound-absorbing grooves are filled with sound insulation particles. A conductive cloth layer is provided on the side of the second foam away from the second rubber pad.

[0005] In the above solution, a shielding layer is provided on the side of the second foam close to the conductive cloth layer, and the shielding layer is a metal nickel layer.

[0006] In the above solution, a toughness reinforcement layer is provided on the side of the shielding layer away from the second foam, and the toughness reinforcement layer is a rock wool layer.

[0007] In the above solution, the cross-sections of the plurality of sound-absorbing grooves are honeycomb-shaped.

[0008] In the above solution, the side of the first foam away from the first rubber pad is set as an adhesive layer.

[0009] In the above solution, a release paper is provided on the side of the adhesive layer away from the first foam.

[0010] The advantages and beneficial effects of the present invention are as follows: the present invention provides a novel vibration-resistant and sound-absorbing conductive foam. The airbag can be limited by the limiting grooves on the first and second rubber pads. When the conductive foam is impacted, the first and second rubber pads and the airbag are squeezed. The elastic force of the first and second rubber pads and the airbag effectively cushions the impact on the conductive foam. The provision of the sound-absorbing grooves and sound-insulating particles effectively increases the sound absorption capacity of the conductive foam. This conductive foam has a simple structure, good impact resistance, excellent sound absorption and noise reduction functions, and effectively extends the service life of the conductive foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0014] Figure 3 This is a structural diagram of part A of the present utility model.

[0015] In the figure: 1. First foam 2. Protective frame 3. Second foam 4. First rubber pad

[0016] 5. Second rubber pad 6. Limiting groove 7. Air bag 8. Sound absorbing groove

[0017] 9. Sound insulation particles 10. Shielding layer 11. Toughness reinforcement layer 12. Conductive fabric layer

[0018] 13. Adhesive layer 14. Release paper DETAILED DESCRIPTION

[0019] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, the utility model is a novel anti-vibration and sound-absorbing conductive foam, comprising a first foam 1, a protective outer frame 2 is provided on the outer side of the upper end of the first foam 1, a second foam 3 is provided on the upper end of the protective outer frame 2, a first rubber pad 4 is provided on the upper side of the first foam 1 located inside the protective outer frame 2, a second rubber pad 5 is provided on the lower side of the second foam 3 located inside the protective outer frame 2, a matching limiting groove 6 is provided on the side where the first rubber pad 4 and the second rubber pad 5 are close to each other, an air bag 7 is provided in the two limiting grooves 6 located in the same vertical plane, the first rubber pad 4 and the second rubber pad 5 are both elastic, and are connected to each other by the first rubber pad 4 and the second rubber pad 5. The limiting grooves 6 on the first rubber pad 4 and the second rubber pad 5 can limit the airbag 7. When the conductive foam is impacted, the first rubber pad 4, the second rubber pad 5 and the airbag 7 are squeezed. The elastic force of the first rubber pad 4, the second rubber pad 5 and the airbag 7 can effectively buffer the impact on the conductive foam. A plurality of matrix-arranged sound-absorbing grooves 8 are provided on the upper end of the second foam 3. The sound-absorbing grooves 8 are filled with sound-insulating particles 9. The sound-absorbing capacity of the conductive foam is effectively increased by the arrangement of the sound-absorbing grooves 8 and the sound-insulating particles 9. A conductive cloth layer 12 is provided on the side of the second foam 3 away from the second rubber pad 5.

[0021] The second foam 3 is provided with a shielding layer 10 on the side close to the conductive cloth layer 12. The shielding layer 10 is a metal nickel layer. Nickel is a silvery-white metal with good mechanical strength and ductility, is insoluble in water, has strong corrosion resistance to acids and alkalis, and has good shielding ability.

[0022] The shielding layer 10 is provided with a toughness reinforcement layer 11 on a side away from the second foam 3 . The toughness reinforcement layer 11 is a rock wool layer. The rock wool layer uses high-quality basalt, dolomite and the like as main raw materials and can be used for tough coatings.

[0023] The cross-section of the plurality of sound-absorbing grooves 8 is honeycomb-shaped.

[0024] The side of the first foam 1 away from the first rubber pad 4 is set as an adhesive layer 13, and the adhesive layer 13 is set to stick to the conductive foam.

[0025] A release paper 14 is provided on the side of the adhesive layer 13 away from the first foam 1 .

[0026] Specifically, in the present utility model, the first rubber pad 4 and the second rubber pad 5 are both elastic, and the airbag 7 can be limited by the limiting grooves 6 on the first rubber pad 4 and the second rubber pad 5. When the conductive foam is impacted, the first rubber pad 4, the second rubber pad 5 and the airbag 7 are squeezed. The elastic force of the first rubber pad 4, the second rubber pad 5 and the airbag 7 can effectively buffer the impact on the conductive foam. The sound-absorbing grooves 8 and the sound-insulating particles 9 are effectively set to increase the sound-absorbing ability of the conductive foam.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A novel anti-vibration and sound-absorbing conductive foam, comprising a first foam (1), characterized in that: A protective outer frame (2) is provided on the outer side of the upper end of the first foam (1), and a second foam (3) is provided on the inner upper end of the protective outer frame (2). A first rubber pad (4) is provided on the upper side of the first foam (1) located inside the protective outer frame (2), and a second rubber pad (5) is provided on the lower side of the second foam (3) located inside the protective outer frame (2). Matching limiting grooves (6) are provided on the side where the first rubber pad (4) and the second rubber pad (5) are close to each other, and air bags (7) are provided in the two limiting grooves (6) located in the same vertical plane. A plurality of matrix-arranged sound-absorbing grooves (8) are provided on the upper end of the second foam (3), and the sound-absorbing grooves (8) are filled with sound insulation particles (9). A conductive cloth layer (12) is provided on the side of the second foam (3) away from the second rubber pad (5).

2. The novel anti-vibration and sound-absorbing conductive foam according to claim 1, characterized in that: A shielding layer (10) is provided on the side of the second foam (3) close to the conductive cloth layer (12), and the shielding layer (10) is a metal nickel layer.

3. The novel anti-vibration and sound-absorbing conductive foam according to claim 2, characterized in that: A toughness reinforcement layer (11) is provided on the side of the shielding layer (10) away from the second foam (3), and the toughness reinforcement layer (11) is a rock wool layer.

4. The novel anti-vibration and sound-absorbing conductive foam according to claim 1, characterized in that: The cross sections of the plurality of sound absorbing grooves (8) are honeycomb-shaped.

5. The novel anti-vibration and sound-absorbing conductive foam according to claim 1, characterized in that: The side of the first foam (1) away from the first rubber pad (4) is provided as an adhesive layer (13).

6. The novel anti-vibration and sound-absorbing conductive foam according to claim 5, characterized in that: A release paper (14) is provided on the side of the adhesive layer (13) away from the first foam (1).

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