Sound insulation cover

Abstract

To reduce damage to a cover body.SOLUTION: A sound insulation cover 10 encloses a sound source 100 by contacting butt joints 14 of cover bodies 12 with each other. The sound insulation cover 10 is provided with: a through hole 16 that passes through the cover bodies 12 with the butt joints 14 abutting each other; and a fastening member 20 that is inserted through the through hole 16 and installed in an annular shape. The fastening member 20 is in annular shape to be opened and closed. The fastening member 20 is provided with: a first piece 22 disposed through the through hole 16; a second piece 24 that is elastically deformable in a direction to be closer relative to the first piece 22; and an engagement portion 26 provided on the second piece 24, to which one end of the first piece 22 is attachable and detachable.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a sound insulating cover that can be attached to equipment such as a motor or a compressor. [Background technology]

[0002] As a measure against vibration and noise from machines and devices, it has been proposed to attach a soundproof cover (see, for example, Patent Document 1). The soundproof cover in Patent Document 1 is assembled by clamping the edges of a resin cover body with clips. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3226820 Summary of the Invention [Problem to be solved by the invention]

[0004] With the configuration of Patent Document 1, the cover body may be damaged when attaching or detaching the clip.

[0005] The present invention has been proposed in view of the above-mentioned problems associated with the conventional technology, and aims to provide a sound-insulating cover whose cover body is less likely to be damaged. [Means for solving the problem]

[0006] A first aspect of the sound-insulating cover according to the present invention is as follows: A sound-insulating cover that encloses a sound source by abutting the butt portions of the cover bodies, a through hole penetrating the cover bodies whose butt portions are in contact with each other; The gist of the present invention is that it comprises a fastening member that is inserted into the through hole and installed in a ring shape.

[0007] A second aspect of the sound-insulating cover according to the present invention is the same as the first aspect, The fastening member may be annular and openable.

[0008] A third aspect of the sound-insulating cover according to the present invention is the same as the second aspect, The fastening member is A first piece portion that is disposed through the through hole; A second piece connected to the first piece so as to be elastically deformable in a direction relatively approaching the first piece; a locking portion provided on the second piece portion and capable of detachably attaching one end of the first piece portion; A side wall of the through hole may be sandwiched between the first piece and the second piece.

[0009] A fourth aspect of the sound-insulating cover according to the present invention is the sound-insulating cover according to the third aspect, The side wall may have a protrusion that protrudes inwardly into the through hole as it approaches the mating cover body.

[0010] A fifth aspect of the sound-insulating cover according to the present invention is the sound-insulating cover according to the fourth aspect, The first piece may be formed so as to fit along the protruding portion. Effect of the Invention

[0011] According to the sound-insulating cover of the present invention, the cover body is less likely to be damaged. [Brief description of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a sound insulating cover according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view taken along line AA in FIG. 1. [Diagram 3] FIG. 2 is an exploded cross-sectional view of a main part of the sound-insulating cover according to the embodiment. [Figure 4] FIG. 2 is a perspective view showing a fastening member according to an embodiment. [Diagram 5] 1A is a cross-sectional view of the sound-insulating cover before the fastening member of Modified Example 1 is attached, and FIG. 1B is a cross-sectional view showing the sound-insulating cover with the cover body held by the fastening member of Modified Example 1. FIG. [Figure 6] FIG. 11 is a perspective view showing a fastening member of a first modified example. [Figure 7] FIG. 11 is a perspective view showing a fastening member of a second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Next, the sound insulation cover according to the present invention will be described below by way of preferred examples with reference to the accompanying drawings. Note that the embodiments and drawings described below are intended to exemplify a portion of the embodiments of the present invention, and are not intended to be used for the purpose of limiting the present invention to these configurations, and may be modified as appropriate within the scope of the present invention. EXAMPLES

[0014] As shown in Fig. 1, the sound insulation cover 10 according to the embodiment includes two cover bodies 12. As shown in Fig. 2, the sound insulation cover 10 is assembled so as to surround a sound source 100 by abutting the butt portions 14 of the two cover bodies 12 against each other. The sound insulation cover 10 also includes a through hole 16 penetrating the two cover bodies 12 whose butt portions 14 are abutted against each other, and a fastening member 20 that is inserted through the through hole 16 and installed in an annular shape. The fastening member 20 restricts the opening of the two cover bodies 12 of the sound insulation cover 10. Examples of the sound source 100 surrounded by the sound insulation cover 10 include equipment such as a compressor, a motor, and a pump, and the sound insulation cover 10 is particularly suitable for use with in-vehicle equipment mounted on a vehicle.

[0015] As shown in Fig. 2, the cover body 12 is formed in a container shape with one side open, and when two cover bodies 12 are combined, a space is formed inside that matches the outer shape of the sound source 100. When the two cover bodies 12 are combined, the opening edges of the openings in the cover bodies 12 abut against each other, and the flange portions 15 protruding outward from the opening edges of the openings in the cover bodies 12 abut against each other. In this way, the opening edges of the openings in the cover bodies 12 and the flange portions 15 correspond to the butt portions 14. The cover body 12 has a plurality of flange portions 15 formed at a distance from each other on each of the opening edges extending in the longitudinal direction (see Fig. 1).

[0016] The cover body 12 may be a so-called solid synthetic resin that does not have a foam structure, such as polyethylene, polypropylene, or ABS, but a molded product of a foam such as polyurethane foam or olefin-based foam can also be used. Such a foam may be any of hard, semi-hard, and soft. Even when the cover body 12 is a soft foam, the fastening member 20 can restrict the opening of the sound-insulating cover 10, and damage to the cover body 12 caused by attaching and detaching the fastening member 20 can be avoided.

[0017] As shown in FIG. 2 and FIG. 3, the through hole 16 is formed in the flange portion 15. The through hole 16 penetrates the flange portion 15 in the thickness direction. As shown in FIG. 3, the through hole 16 is formed so that the opening width becomes wider in the protruding direction of the flange portion 15 from the opening on the abutting surface that abuts against the flange portion 15 of the other side toward the opening on the surface of the flange portion 15 opposite the abutting surface. In other words, a protrusion 18a that protrudes inwardly of the through hole 16 toward the cover body 12 of the other side is formed on the side wall 18 surrounding the through hole 16. The side wall 18 on which the protrusion 18a is formed is sandwiched by the fastening member 20. When the flange portions 15 of the two cover bodies 12 are overlapped with each other, the through holes 16 formed in the flange portions 15 are aligned and communicated with each other, and become one hole that connects from the outer surface of one flange portion 15 through the abutting surfaces of the other flange portion 15 to the outer surface of the other flange portion 15. Furthermore, the protrusions 18a of the two side walls 18 are connected together to form a mountain shape whose apex is located at the position of the abutting surface.

[0018] As shown in Fig. 4, the fastening member 20 is annular and can be opened and closed. More specifically, the fastening member 20 includes a first piece 22 disposed through the through hole 16, a second piece 24 connected to the first piece 22 so as to be elastically deformable in a direction relatively approaching the first piece 22, and a locking portion 26 provided on the second piece 24 and to which one end of the first piece 22 can be detached. As shown in Fig. 2, the fastening member 20 is configured to sandwich the side wall 18 of the through hole 16 between the first piece 22 and the second piece 24. The fastening member 20 can be a molded product of synthetic resin, a processed metal product, or the like.

[0019] As shown in FIG. 4, the first piece 22 is rod-shaped. One end of the first piece 22 is a free end that is not connected to the second piece 24. The other end of the first piece 22 is connected to a curved portion of the second piece 24. As shown in FIG. 2, the first piece 22 is formed to follow the convex portion 18a of the side wall 18. Specifically, the center portion of the first piece 22 is bent so that the second piece 24 side is recessed. As shown in FIG. 4, the second piece 24 is rod-shaped. As shown in FIG. 2, the second piece 24 is formed to follow the end face of the flange portion 15. Specifically, the second piece 24 is formed linearly along the end face of the flange portion 15 that extends linearly in the overlapping direction of the flange portion 15. As shown in FIG. 4, the locking portion 26 is formed in a hook shape that can insert and remove one end of the first piece 22. 3, when one end of first piece 22 of fastening member 20 is released from locking portion 26, one end of first piece 22 moves away from second piece 24 in a state in which no external force is applied, and a part of the ring of fastening member 20 opens. As shown in FIG. 2, when one end of first piece 22 of fastening member 20 is hooked onto locking portion 26, first piece 22 is held in a state approaching second piece 24, and the ring of fastening member 20 connects and closes.

[0020] Next, the assembly of the sound insulation cover 10 will be described. The two cover bodies 12 are arranged so as to surround the sound source 100, and the butt joints 14 are brought into contact with each other. One end of the first piece 22, which is not engaged with the locking portion 26, is inserted from one side of the through hole 16, and the one end is passed through until it comes out from the other side of the through hole 16 (see FIG. 3). The first piece 22 and the second piece 24 are brought relatively close to each other, and the one end of the first piece 22 protruding from the through hole 16 is hooked on the locking portion 26, so that the fastening member 20 is inserted into the through hole 16 and installed in a ring shape. The sound insulation cover 10 is assembled to surround the sound source 100, with the two cover bodies 12 held in a state where the butt joints 14 are brought into contact with each other by the fastening member 20 that is inserted into the through hole 16 and installed in a ring shape. The sound insulation cover 10 surrounding the sound source 100 can block the sound generated by the sound source 100. The sound-insulating cover 10 can be easily removed by reversing the assembly procedure.

[0021] The above-mentioned sound-insulating cover 10 can hold the two cover bodies 12 in a state in which the butt portions 14 are in contact with each other by the fastening member 20 that is installed in an annular shape by being inserted through the through hole 16. Moreover, since the sound-insulating cover 10 is installed by inserting the fastening member 20 into the through hole 16 that is formed in advance in the cover body 12, it is possible to avoid damaging the cover body 12 by the fastening member 20 both when attaching and removing the fastening member 20.

[0022] For example, a brush clip has multiple protrusions on the part that fits into the through hole, and holds two cover bodies by interfering with the side wall of the through hole. For this reason, the cover body is damaged every time the brush clip is attached and detached, and if the brush clip is repeatedly attached and detached, the through hole is damaged and the cover body cannot be held. In addition, a push clip in which a collar is embedded in the cover body beforehand and a rivet is inserted into this collar has problems such as peeling starting from the collar, the labor required to insert the collar, and the labor required to separate the collar when disposing of the cover body.

[0023] In contrast, the above-mentioned sound-insulating cover 10 has a configuration in which the fastening member 20 is inserted into the through-hole 16 and installed in a ring shape, so there is no need for excessive interference with the side wall 18 of the through-hole 16 as with a brush clip, and this makes it possible to prevent the cover body 12 from being damaged when the fastening member 20 is attached or detached. Also, since the fastening member 20 is a separate member that can be attached and detached to the cover body 12, there is no need to insert a collar as with a push clip, or to separate the collar when discarding. Furthermore, the retention structure of the cover body 12 by the fastening member 20 does not embed a foreign object such as a collar into the cover body 12, so there is no adverse effect on the cover body 12.

[0024] Since the fastening member 20 is annular and can be opened and closed, the fastening member 20 can be opened when passing through the through hole 16, making it easy to insert and remove the fastening member 20 from the through hole 16. Then, by closing the fastening member 20, the fastening member 20 can hold the two cover bodies 12 with the butt portions 14 abutting against each other.

[0025] The fastening member 20 has a first piece 22 disposed through the through hole 16, a second piece 24 connected to the first piece 22 so as to be elastically deformable in a direction relatively approaching the first piece 22, and a locking portion 26 provided on the second piece 24 and detachable to one end of the first piece 22. The fastening member 20 is configured to sandwich a side wall 18 in the through hole 16 between the first piece 22 and the second piece 24. In this manner, by sandwiching the side wall 18 between the first piece 22 and the second piece 24 of the fastening member 20, it is possible to suppress misalignment or rattling between the butt joints 14 of the two cover bodies 12, and the fastening member 20 can hold the two cover bodies 12 more firmly.

[0026] Since the side wall 18 has a protrusion 18a that protrudes inwardly of the through hole 16 toward the mating cover body 12, when the side wall 18 is sandwiched between the first piece 22 and the second piece 24 of the fastening member 20, the protrusion 18a can be held by the first piece 22. This can prevent misalignment or rattling between the butt joints 14 of the two cover bodies 12, and the fastening member 20 can hold the two cover bodies 12 more firmly.

[0027] Since the first piece 22 is formed to fit along the convex portion 18a of the side wall 18 in the through hole 16, when the side wall 18 is sandwiched between the first piece 22 and the second piece 24 of the fastening member 20, the convex portion 18a fits into the recessed portion of the first piece 22. This not only prevents misalignment and rattling in the direction of the butt surfaces between the butt joints 14 caused by sandwiching the side wall 18 between the first piece 22 and the second piece 24 of the fastening member 20, but also prevents misalignment and rattling in the direction of overlapping of the butt surfaces. This prevents misalignment and rattling between the butt joints 14 of the two cover bodies 12, and allows the fastening member 20 to hold the two cover bodies 12 more firmly.

[0028] (Example of change) The present invention is not limited to the above-mentioned items, and may be, for example, as follows: It should be noted that the present invention is not limited to the specific descriptions of the examples and the following modified examples. (1) In the embodiment, the side wall 18 of the through hole 16 has the protrusion 18a, but this is not limiting, and as shown in FIG. 5(a), the side wall 18 does not necessarily have to have the protrusion 18a. (2) In the embodiment, the movement of the butted portions 14 in the direction away from each other is restricted by the engagement between the convex portion 18a of the side wall 18 in the through hole 16 and the shape of the first piece 22 of the fastening member 20 that conforms to the convex portion 18a. However, this is not limited to the above, and the butted portions 14 may be sandwiched from the overlapping direction by the fastening member 20. As shown in Figs. 5 and 6, the fastening member 20 of the first modified example includes a first support piece 28 provided on the locking portion 26 side of the fastening member 20, and a second support piece 30 provided on the connecting side of the first piece 22 and the second piece 24. The first support piece 28 is provided between the straight portion of the second piece 24 and the locking portion 26, and supports one end of the first piece 22 hooked on the locking portion 26. The second support piece 30 extends in the same direction as the first support piece 28 from the straight portion of the second arm 24 toward the first arm 22, and the tip of the second support piece 30 is not connected to the first arm 22. By sandwiching the two flange portions 15 between the first support piece 28 and the second support piece 30, the fastening member 20 of the first modified example can suppress misalignment and rattling in the overlapping direction of the two flange portions 15. (3) In the embodiment, the locking portion 26 is configured to hook and hold one end of the first arm 22, but this is not limited to this. For example, as shown in FIG. 7, the locking portion 26 may be configured such that a boss 26a provided on one of the first arm 22 and the second arm 24 is inserted into a boss hole 26b provided on the other of the first arm 22 and the second arm 24. (4) The through hole 16 is not limited to being formed in the flange portion 15, and may be provided at other positions in addition to or instead of the flange portion 15. The position at which the through hole 16 is formed may be, for example, a position where the walls of the cover body 12 overlap, in the butt joint portion 14. The position at which the through hole 16 is formed may be other than the butt joint portion 14, and for example, the through hole 16 may be formed so as to penetrate walls facing each other across the internal space of the cover body 12. (5) In the embodiment, the cover bodies 12 are independent of each other. However, this is not limited to the above. For example, one side of the cover bodies 12 may be connected by a hinge such as an integral hinge, and the cover bodies 12 may be configured to open and close around the hinge as an axis. (6) The sound-insulating cover may be composed of two or more cover bodies. [Explanation of symbols]

[0029] 10 sound insulation cover, 12 cover body, 14 butt joint, 16 through hole, 18 side wall, 18a protruding portion, 20 fastening member, 22 first piece portion, 24 second piece portion, 26 locking portion, 100 Sound Sources

Claims

1. A sound-insulating cover that encloses a sound source by abutting the butt portions of the cover bodies, a through hole penetrating the cover bodies whose butt portions are in contact with each other; a fastening member that is annularly installed and inserted through the through hole.

2. The sound insulating cover according to claim 1 , wherein the fastening member is annular and can be opened and closed.

3. The fastening member is A first piece portion that is disposed through the through hole; a second piece connected to the first piece so as to be elastically deformable in a direction relatively approaching the first piece; a locking portion provided on the second piece portion and capable of detachably attaching one end of the first piece portion, The sound-insulating cover according to claim 2 , wherein a side wall of the through hole is sandwiched between the first piece and the second piece.

4. The sound insulating cover according to claim 3 , wherein the side wall has a protrusion that protrudes inwardly into the through hole as it approaches the mating cover body.

5. The sound insulating cover according to claim 4 , wherein the first piece is formed so as to fit along the protrusion.

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