A Combined type vibration absorber for heavyweight impact noise insulation

Abstract

The present invention relates to a vibration absorber for improving inter-floor noise in multi-story apartment buildings, and more specifically, to a composite vibration absorber for improving inter-floor noise through the reduction of impact sound, which can effectively reduce heavy, long-lasting low-frequency sounds (20~100Hz) caused by human walking, children jumping, etc., among the inter-floor noise generated in the inter-floor slabs of multi-story apartment buildings. Furthermore, rather than a vibration absorber that targets only a specific frequency of impact sound, it can utilize a single composite vibration absorber to set and utilize various target frequencies in a diverse frequency band ranging from 20 to 100Hz according to the site conditions. In particular, it relates to a composite vibration absorber for improving inter-floor noise through the reduction of impact sound, which can comprehensively respond to impact sounds in various frequency ranges generated in a specific space by utilizing a set of vibration absorbers in which multiple vibration absorbers are periodically arranged.

Description

Technology Field

[0001] The present invention relates to a vibration absorber for improving inter-floor noise in multi-story apartment buildings, and more specifically, to a composite vibration absorber for improving inter-floor noise through the reduction of impact sound, which can effectively reduce heavy, long-lasting low-frequency sounds (20~100Hz) caused by human walking, children jumping, etc., among the inter-floor noise generated in the inter-floor slabs of multi-story apartment buildings. Furthermore, rather than a vibration absorber that targets only a specific frequency of impact sound, it can utilize a single composite vibration absorber to set and utilize various target frequencies in a diverse frequency band ranging from 20 to 100Hz according to the site conditions. In particular, it relates to a composite vibration absorber for improving inter-floor noise through the reduction of impact sound, which can comprehensively respond to impact sounds in various frequency ranges generated in a specific space by utilizing a set of vibration absorbers in which multiple vibration absorbers are periodically arranged. Background Technology

[0002] In buildings such as multi-unit housing, the floor of the upper floor and the ceiling of the lower floor share the same structural element known as the inter-floor slab; consequently, there is a problem where various noises generated on the upper floor are transmitted to the lower floor through the inter-floor slab. In particular, in multi-unit housing where floors must be shared with neighboring households, noise and vibrations caused by walking, children running, falling objects, and the movement of furniture are transmitted to neighboring households, becoming a cause of unpleasant incidents between neighbors. Consequently, to resolve the issue of floor impact noise in multi-unit housing, Korea established the 'Regulations on Housing Construction Standards, etc.' to set standards for preventing inter-floor noise in multi-unit housing for the improvement of the residential environment, and these regulations have been in effect since April 2004. Specifically, these regulations stipulate floor impact noise insulation performance standards as follows: lightweight floor impact noise (noise mainly in the mid-to-high frequency range caused by falling objects and dragging chairs) must be 58 dB or less, and heavyweight floor impact noise (noise mainly in the low frequency range generated by walking or children running) must be 50 dB or less.

[0003] In conventional floor structures currently being constructed to reduce floor impact noise, cushioning materials are often installed; however, it has been found that such materials are not particularly effective in reducing heavy impact noise. Consequently, it is common practice at most construction sites to apply standard floor structures to meet legal requirements regarding heavy impact noise. Standard floor structures involve increasing the slab thickness to reduce heavy impact noise; for instance, in the case of wall-type structures, the concrete slab thickness is constructed to 210 mm. In other words, the vibration of the slab is controlled by the slab thickness. However, since standard floor structures are constructed with a thickness greater than that typically required for structural safety, problems such as increased concrete usage, increased building self-weight, and reduced effective floor height inevitably follow.

[0004] Furthermore, expensive floor mats installed after moving in to reduce inter-floor noise have absolutely nothing to do with heavy impact noise and only reduce light impact noise to some extent.

[0005] Therefore, there is an increasing need for new vibration absorber technology that can effectively reduce heavy impact floor noise across various ranges, which accounts for the largest portion of inter-floor noise, without making the inter-floor slab thickness excessively thick.

[0006] <Patent Literature>

[0007] Korean Registered Patent No. 10-1488443 (Published Feb. 6, 2015) "Vibration absorber for reducing inter-floor noise and floor structure using the same"

[0008] The prior art disclosed in the aforementioned <Patent Document> merely discloses a method of absorbing vibrations using a mass that vibrates up and down inside a vibration absorber, and is completely unrelated to a technology capable of complexly and actively controlling and reducing heavy floor impact noise in various ranges. The problem to be solved

[0009] The present invention has been devised to solve the above-mentioned problems,

[0010] The objective of the present invention is to provide a composite dust absorber for improving inter-floor noise through the reduction of heavy impact sound, which can effectively reduce heavy and long-lasting low-frequency sound (20~100Hz) generated by human walking, children jumping, etc., among inter-floor noise generated in the inter-floor slabs of multi-unit housing.

[0011] Another objective of the present invention is to provide a composite dust absorber for improving inter-floor noise through the reduction of heavy impact sound, which is not a dust absorber that targets only a specific frequency among heavy impact sounds, but rather a composite dust absorber that can utilize various target frequencies in a range of 20 to 100 Hz according to the site conditions.

[0012] Another objective of the present invention is to provide a composite dust absorber for improving inter-floor noise through the reduction of impact sound, which can comprehensively respond to impact sound of various ranges occurring in a specific space by utilizing a single dust absorber set in which a plurality of dust absorbers are periodically arranged.

[0013] Another objective of the present invention is to provide a composite vibration absorber for improving inter-floor noise through the reduction of heavy impact sound, which facilitates management such as maintenance by allowing easy changes to target frequency settings as needed, such as changes in on-site conditions, even after installation. means of solving the problem

[0014] The present invention is implemented by an embodiment having the following configuration to achieve the aforementioned objective.

[0015] According to one embodiment of the present invention, a composite vibration absorber for improving inter-floor noise through the reduction of impact sound according to the present invention comprises: a support member fixed to a structure; a mass block member that reduces impact sound by moving in response to vibrations generated by an impact load generated in the structure; and a guide member, one side of which is coupled to and supported by the support member, and the other side of which is connected to the mass block member to guide the direction and distance of movement of the mass block member.

[0016] According to another embodiment of the present invention, the guide portion of the present invention is characterized by being able to adjust the target frequency by adjusting the direction and distance of the mass block portion moving along the slit through adjusting the direction and distance of the slit formed in the guide portion.

[0017] According to another embodiment of the present invention, the mass block portion of the present invention is characterized in that a pair of first mass blocks and second mass blocks move independently of each other, and the guide portion has a central portion coupled to the support portion and the first mass block and second mass block are coupled to each of the two sides, so that they move along slits formed on each of the two sides or collide, thereby effectively reducing the impact sound caused by vibrations resulting from impact loads generated in the structure.

[0018] According to another embodiment of the present invention, the guide member of the present invention includes a coupling moving means, one end of which is coupled to the first mass block or the second mass block and the other end of which is coupled to the slit, so that the first mass block or the second mass block can move while moving along the slit, and a plurality of coupling parts are formed at regular intervals on the first mass block or the second mass block, such that one end of the coupling moving means can be coupled thereto, and the distance between the first mass block and the second mass block is adjusted according to which of the plurality of coupling parts of the first mass block or the second mass block the coupling moving means is coupled thereto, thereby controlling the degree of collision occurrence between the two blocks and enabling the adjustment of the target frequency.

[0019] According to another embodiment of the present invention, the composite dust absorber according to the present invention forms a dust absorber set having a structure in which a plurality of guide parts and mass block parts coupled thereto are coupled at regular intervals to a single support part formed in a continuous direction, and by adjusting the target frequency for each guide part and mass block part within the dust absorber set, it is characterized by being able to respond comprehensively to various ranges of heavy impact noise generated in a specific space by utilizing a single dust absorber set.

[0020] According to another embodiment of the present invention, the support portion of the vibration absorber set is formed in a rounded manner in one direction to form a single circle, so that each guide portion and mass block portion coupled to the support portion at regular intervals can be arranged to face different directions, thereby enabling a comprehensive response to vibrations and resulting impact sounds caused by impact loads occurring at various points in a specific space using a single vibration absorber set. Effects of the invention

[0021] The present invention can achieve the following effects through the combination and usage relationship of the embodiments described above and the configuration described below.

[0022] The present invention has the effect of effectively reducing heavy impact noise in the low frequency band (20~100Hz), which is heavy and has a long duration, particularly caused by human walking, children jumping, etc., among the inter-floor noise generated in the inter-floor slabs of multi-unit housing.

[0023] The present invention has the effect of allowing various target frequencies to be set and utilized in accordance with the field conditions through a single composite type of vibration absorber, rather than a vibration absorber that targets only a specific frequency among heavy impact sounds.

[0024] The present invention utilizes a single set of vibration absorbers in which a plurality of vibration absorbers are periodically arranged to provide a combined response to various ranges of heavy impact noise generated in a specific space.

[0025] The present invention has the effect of facilitating management, such as maintenance, by allowing easy changes to target frequency settings as needed, such as changes in field conditions, even after installation. Brief explanation of the drawing

[0026] Figure 1 is a graph comparing the case with and without cushioning material for floor vibration. FIG. 2 is a reference drawing illustrating an example of a composite dust collector according to the present invention. FIG. 3 is a reference drawing illustrating an example of a dust collector set according to the present invention. Specific details for implementing the invention

[0027] Preferred embodiments of a composite vibration absorber for improving inter-floor noise through the reduction of impact sound according to the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that identical components in the drawings are represented by identical reference numerals wherever possible. Unless otherwise specifically defined, all terms in this specification have the same general meaning as understood by a person skilled in the art to which the present invention pertains, and in the event of a conflict with the meaning of a term used in this specification, the definition used in this specification shall prevail. Throughout the specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0029] Referring to FIG. 1 and the like, a composite vibration absorber for improving inter-floor noise through the reduction of impact sound according to one embodiment of the present invention may be formed with a structure comprising: a support member (10) fixed to a structure; a mass block member (20) that reduces impact sound by moving in response to vibrations generated by impact loads generated in the structure; and a guide member (30) which is connected to the mass block member (20) on one side and supported by the support member (10), and which guides the direction and distance of movement of the mass block member (20). In particular, the guide member (30) is characterized by being able to adjust the target frequency of impact sound to be reduced by adjusting the direction and distance of the mass block member (20) moving along the slit (310) through the adjustment of the direction and distance of the slit (310) formed in the guide member (30).

[0030] As previously explained, among floor impact sounds, heavy impact sound is a heavy and long-lasting impact sound generated by human walking, children jumping, etc., and contains many low-frequency components; this characteristic is that it is hardly reduced by cushioning materials included in the slab. Figure 1 is a graph comparing floor vibrations generated in a slab with and without cushioning materials. Referring to this, it can be confirmed that there is no significant difference between the presence and absence of cushioning materials regarding vibration noise below 100 Hz, where heavy impact sound is mainly distributed (it can be confirmed that vibration noise above 100 Hz, i.e., light impact sound, is definitely reduced with the presence of cushioning materials, indicating that cushioning materials are effective against light impact sound). Accordingly, the present invention provides a composite type of vibration absorber for improving inter-floor noise through the reduction of heavy impact sound, which targets effective reduction of heavy impact sound in such low frequency bands (20~100Hz). In particular, rather than a vibration absorber that targets only a specific frequency among heavy impact sounds, it allows for the setting and utilization of various target frequencies in a diverse frequency band ranging from 20 to 100Hz according to site conditions through a single composite type of vibration absorber. Furthermore, even after installation, it allows for easy changes to the target frequency settings as needed, such as changes in site conditions, thereby facilitating maintenance and management. The following describes each component in detail.

[0031] The support member (10) is fixed to a structure and provides support for the composite dust collector (and each component) of the present invention, thereby forming the basic framework of the composite dust collector. The support member (10) can be fixed to an inter-floor slab where heavy impact sound is generated, and can be fixed to the inter-floor slab in various forms and structures, such as on the lower surface of the inter-floor slab or, if necessary, within the inter-floor slab. The guide member (30), which will be described later, and the mass block member (20) coupled thereto are coupled to and supported by the support member (10), thereby performing their functions.

[0032] The above mass block section (20) is configured to reduce heavy impact noise by moving in response to vibrations caused by impact loads generated in the structure, that is, a structure is applied to reduce heavy impact noise generated in the inter-floor slab through the kinetic energy of the mass block section (20). The above mass block section (20) is configured in the form of a block having a certain amount of weight and can be formed in various shapes such as a cube or a rectangular prism. Since the above mass block section (20) communicates with the above support section (10) through the guide section (30) to be described later, when vibrations caused by impact loads from the inter-floor slab to which the support section (10) is fixed are transmitted to the above mass block section (20) through the support section (10) and the guide section (30), the above mass block section (20) prevents noise caused by vibration from occurring through the kinetic energy of moving in response to the vibration. The movement and movement of the above mass block part (20) can be controlled by the slot configuration of the guide part (30) to be described later.

[0033] The guide member (30) is configured such that one side is connected to and supported by the support member (10), while the other side is connected to the mass block member (20), thereby performing the function of guiding the direction and distance of movement of the mass block member (20). That is, it is configured to perform the function of connecting and linking the two between the support member (10) and the mass block member (20). One side of the guide member (30) is connected to the support member (10), and the other side is connected to the mass block member (20), so that the support member (10) can provide a supporting force to support the connected mass block member (20), and at the same time, it can guide the direction of movement and the distance of movement so that the mass block member (20) can move.

[0034] The method (structure) in which the guide part (30) guides the movement direction and movement distance of the mass block part (20) can be achieved through a slit (310) formed on the guide part (30). That is, a separate slit (310) is formed along the length direction of the guide, and one end of the mass block part (20) is connected to the slit (310) to form a connection relationship so that the mass block part (20) can move along the direction of the connected slit (310). Then, by adjusting the direction and distance of the slit (310) formed on the guide part (30), the movement direction and movement distance of the mass block part (20) that moves along the slit (310) can be controlled. The distance that the mass block section (20) moves according to the vibration transmitted from the inter-floor slab is linked to the target frequency of the impact sound that the mass block section (20) can reduce. Therefore, the target frequency of the impact sound to be reduced can be customized by adjusting the distance formed in the slit (310) or by adjusting the movement distance of the mass block section (20) moving along the slit (310).

[0036] Meanwhile, referring to FIG. 2, according to another embodiment of the present invention, in the composite dust collector of the present invention, the mass block section (20) is formed in a structure such that a first mass block (210) and a second mass block (220) can each move independently, thereby primarily reducing the impact sound through the kinetic energy resulting from the movement of the mass block section (20) (i.e., the first mass block (210) and the second mass block (220)), and additionally reducing the impact sound through the collision (energy) between the first mass block (210) and the second mass block (220).

[0037] To this end, as shown in FIG. 2, the guide portion (30) has a central portion connected to the support portion (10), and the first mass block (210) and the second mass block (220) are connected to each of the two side portions, so that the first mass block (210) and the second mass block (220) move along the slits (310) formed on each of the two side portions, or the two blocks (first mass block (210) and second mass block (220)) collide with each other, thereby enabling more effective reduction of the impact sound caused by vibrations generated by impact loads in the structure (inter-floor slab) where the support portion (10) is fixed.

[0038] More specifically, the guide portion (30) includes a coupling moving means (320) (for example, the coupling moving means (320) may be formed in the shape of a rod or bar having a long length) which is coupled at one end to the first mass block (210) or the second mass block (220) respectively and coupled at the other end to the slit (310) so that the first mass block (210) or the second mass block (220) can move while moving along the slit (310), and correspondingly, a coupling portion (230) may be formed on the first mass block (210) or the second mass block (220) so that one end of the coupling moving means (320) can be coupled thereto. That is, the first mass block (210) or the second mass block (220) is coupled to the slot () of the guide part (30) through the coupling moving means (320) and moves along the slot (). In this case, the distance that the coupling moving means (320) can move along the slot () becomes the moving distance of each first mass block (210) or second mass block (220). Therefore, the target frequency of the weight impact sound to be reduced can be customized by adjusting the direction or distance that the coupling moving means (320) can move along the slot ().

[0039] Meanwhile, the coupling portion (230) formed on the first mass block (210) or the second mass block (220) may be formed in multiple numbers at regular intervals on the first mass block (210) or the second mass block (220), respectively. At this time, depending on which of the multiple coupling portions (230) the coupling moving means (320) coupled to the first mass block (210) or the second mass block (220) is coupled to, the distance between the first mass block (210) and the second mass block (220) (more precisely, the distance at which the first mass block (210) and the second mass block (220) must move relative to each other for the two to collide) can be adjusted. That is, if the coupling moving means (320) is coupled to the coupling parts (230) that are furthest apart from each other among the coupling parts (230) of the first mass block (210) and the second mass block (220) that are arranged adjacent to each other (for example, as illustrated in FIG. 2), then the first mass block (210) and the second mass block (220) can collide with each other by moving only the shortest distance relatively, and for another example, if the coupling moving means (320) is coupled to the coupling parts (230) that are closest to each other among the coupling parts (230) of the first mass block (210) and the second mass block (220) that are arranged adjacent to each other, then the first mass block (210) and the second mass block (220) can collide with each other only by moving the longest distance relatively. In this way, depending on which of the plurality of coupling parts (230) of the first mass block (210) or the second mass block (220) the coupling moving means (320) is coupled to, the distance between the first mass block (210) and the second mass block (220) (i.e., the collision occurrence interval at which a collision between the two can occur at a certain distance) is adjusted, thereby allowing the degree of collision between the two blocks to be controlled and the target frequency of the weight impact sound to be reduced to be customized (adjusted).

[0041] Meanwhile, referring to FIG. 3, according to another embodiment of the present invention, the composite dust collector according to the present invention can form a dust collector set (A) in which a plurality of guide parts (30) and mass block parts (20) coupled thereto are coupled at regular intervals to a single support part (10) formed in a continuous direction.

[0042] That is, the above dust collector set (A) is structured such that a plurality of guide portions (30) and mass block portions (20) are formed at regular intervals on a single support portion (10) formed in succession, as illustrated in FIG. 3. To put it simply, it can be viewed as a structural concept in which a plurality of dust collectors form a set.

[0043] In this way, by arranging multiple vibration absorbers at regular intervals to form a single vibration absorber set (A) and utilizing it, it becomes possible to adjust the target frequency differently for each guide section (30) and mass block section (20) within the vibration absorber set (A) (i.e., for each vibration absorber). This has the characteristic of enabling a comprehensive response to various ranges of heavy impact sounds generated in a specific space by utilizing a single vibration absorber set (A). (That is, even in the case of heavy impact sounds caused by impacts from floor slabs in multi-unit housing, the frequency of the heavy impact sound generated when children run and the frequency of the heavy impact sound generated when dragging objects are different from each other, so it becomes possible to respond more customizedly to these various heavy impact sounds.)

[0044] In particular, as shown in the example illustrated in FIG. 3, when the support portion (10) of the vibration absorber set (A) is formed in a rounded manner in one direction to form a single circle, the respective guide portion (30) and mass block portion (20) (i.e., each vibration absorber) that are coupled at regular intervals to the support portion (10) forming a single circle shape can be arranged to face different directions. Therefore, by utilizing a single vibration absorber set (A), it is possible to respond more precisely (customically) and comprehensively to vibrations and the resulting heavy impact sound caused by impact loads occurring at various points in a specific space. (The alignment of the direction in which vibrations are transmitted to the vibration absorber and the direction in which the mass block portion (20) of the vibration absorber moves also affects the setting of the target frequency or reduction.) That is, by arranging the respective vibration absorbers formed at regular intervals in a single vibration absorber set (A) to face different directions, various vibrations occurring at various points in the inter-floor slab where the vibration absorber set (A) is installed It becomes possible to more precisely reduce vibrations transmitted in a specific direction (and the resulting impact sound).

[0046] Although the applicant has described various embodiments of the present invention above, such embodiments are merely examples of implementing the technical concept of the present invention, and any modification or alteration that implements the technical concept of the present invention should be interpreted as falling within the scope of the present invention. Explanation of the symbols

[0047] 10: Support 20: Mass block section 210: First mass block 220: Second mass block 230: Connecting section 30: Guide section 310: Slit 320: Combined movement means A: Dust collector set

Claims

Claim 1 delete Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A support member fixed to a structure; a mass block member that moves in response to vibrations caused by impact loads generated in the structure and reduces impact noise; A composite type vibration absorber comprising: a guide part, one side of which is connected to and supported by the support part, and the other side of which is connected to the mass block part to guide the direction and distance of movement of the mass block part; wherein the composite type vibration absorber forms a vibration absorber set in which a plurality of guide parts and mass block parts connected thereto are connected at regular intervals to a support part formed continuously in one direction, and wherein the target frequency is adjusted for each guide part and mass block part within the vibration absorber set so as to respond comprehensively to various ranges of heavy impact sound generated in a specific space by utilizing a single vibration absorber set, and wherein the support part of the vibration absorber set is formed continuously in a rounded manner in one direction to form a single circle, so that each guide part and mass block part connected to the support part at regular intervals can be arranged to face different directions, thereby enabling comprehensive response to vibrations and heavy impact sound generated by impact loads occurring at various points in a specific space by utilizing a single vibration absorber set.

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