Soundproof cover

Abstract

To provide a soundproof cover in which outer shell bodies can be easily assembled.SOLUTION: A soundproof cover 10 comprises: engagement parts 22 provided extending from each of openable / closable outer shell bodies 12 and each have an engagement hole 22a; and engagement reception parts 24 provided at positions corresponding respectively to the engagement parts 22 of each of the closed outer shell bodies 12 and allowing the engagement parts 22 to be attached / detached when each inserted into / extracted from the engagement hole 22a. The engagement reception part 24 has a fall stop part 28 which protrudes to extend obliquely toward the outer shell body 12 and prevents the engagement part 22 engaging the engagement reception part 24 from coming out.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a soundproof cover that can be attached to equipment such as a compressor or a motor. [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] It has been pointed out that with the configuration of Patent Document 1, there is a risk that the clip may fall off, making it difficult to assemble the cover body.

[0005] The present invention has been proposed in view of the above-mentioned problems associated with the conventional technology, in order to preferably solve these problems, and has an object to provide a soundproof cover that is easy to assemble to an outer shell. [Means for solving the problem]

[0006] In order to overcome the above problems and achieve the intended object, the soundproof cover according to the present invention comprises: An engagement portion extending from the openable and closable outer shell and having an engagement hole; an engagement receiving portion provided at a position corresponding to the engagement portion in the closed outer shell body, the engagement portion being detachable by being inserted into and detached from the engagement hole; The engaging receiving portion protrudes obliquely toward the outer shell body and has a retaining portion that prevents the engaging portion engaged with the engaging receiving portion from coming off. Effect of the Invention

[0007] According to the soundproof cover of the present invention, the engaging portion can be easily hooked onto the engaging receiving portion, so that the outer shell can be easily assembled. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a soundproof cover according to an embodiment of the present invention in a closed state. [Diagram 2] FIG. 2 is a perspective view showing the soundproof cover of the embodiment in an open state. [Diagram 3] FIG. 2 is a front view showing the soundproof cover of the embodiment in a closed state. [Figure 4] 11 is an enlarged perspective view showing a state in which an engagement portion is attached to an engagement receiving portion; FIG. [Diagram 5] FIG. 3 is an end view taken along line AA in FIG. 2. [Figure 6] 13 is an end view of a main part showing a state in which an engagement portion is attached to an engagement receiving portion. FIG. [Figure 7] 13A to 13C are end views of essential parts showing a process of attaching an engagement portion to an engagement receiving portion. [Figure 8] 13 is an end view of a main portion showing a modified example of the engagement receiving portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Next, the soundproof cover according to the present invention will be described below by way of preferred embodiments with reference to the accompanying drawings. The soundproof cover according to the present invention can be attached to, for example, a compressor, a motor, or other sound generating source (attachment target), and more specifically, can be used for on-board equipment mounted on a vehicle. EXAMPLES

[0010] 1 and 2, the soundproof cover 10 of the embodiment includes an outer shell 12 that can be opened and closed by a hinge 14, and a sound absorbing body 16 disposed inside the outer shell 12. The soundproof cover 10 is attached to and detached from an object by opening the outer shell 12 (see FIG. 2), and is attached to surround the object by closing the outer shell 12 (see FIG. 1).

[0011] As shown in Fig. 1 and Fig. 3, the outer shell body 12 constitutes the outer shell of the soundproof cover 10 and also functions as a sound insulator that blocks the transmission of sound. The outer shell body 12 is configured to be able to be opened by being separated into two wall portions 20, 20 with the hinge 14 as a fulcrum. Moreover, the outer shell body 12 becomes a box-like shape that can surround an object to be attached by butting the open ends of the two wall portions 20, 20 together and closing them. The hinge 14 of the embodiment is an integral hinge formed integrally with the semi-cylindrical wall portion 20.

[0012] As shown in FIG. 6, the shell 12 of the embodiment is a molded product of a polymer compound in which each part, such as a wall part 20, a hinge 14, a holding part 18 described later, an engagement part 22, and an engagement receiving part 24, are integrally molded. As the polymer compound constituting the shell 12, an elastomer containing a thermoplastic elastomer (TPE) such as an olefin-based thermoplastic elastomer (TPO), or a synthetic resin such as polyethylene (PE) or polypropylene (PP) can be used. From the viewpoint of protecting surrounding members that may interfere with the soundproof cover 10, an elastomer such as an olefin-based thermoplastic elastomer (TPO) is preferable as the shell 12 because of its flexibility. The shell 12 can be held in a closed state by engaging the engagement part 22 provided on one wall part 20 with the engagement receiving part 24 provided on the other wall part 20 (see FIG. 1, FIG. 4, and FIG. 6).

[0013] The sound absorbing body 16 is a molded product of a foam such as polyurethane foam or olefin-based foam. The sound absorbing body 16 is arranged corresponding to each of the wall portions 20. When the outer shell body 12 is closed, the two sound absorbing bodies 16, 16 surround the object to which it is to be attached. The sound absorbing body 16 is separate from the outer shell body 12 and can be attached and detached to the outer shell body 12. The edge of the sound absorbing body 16 in the embodiment is held by a hook-shaped holding portion 18 provided on the outer shell body 12 (see FIG. 5).

[0014] As shown in FIG. 2, the engaging portion 22 is provided on an edge of the wall portion 20 different from the edge where the hinge 14 is provided. The engaging portion 22 has a tongue shape formed so as to extend from the edge of the wall portion 20. The engaging portion 22 has a base end (sometimes called the shell body 12 side or root) connected to the outer surface of the wall portion 20, and a tip end extending from the end of the wall portion 20. When the shell body 12 is closed, the tip end of the engaging portion 22 overlaps with the outer surface of the wall portion 20 where the engagement receiving portion 24 is provided. The engaging portion 22 of the embodiment has flexibility that allows bending deformation in its thickness direction. The engaging portion 22 has an engaging hole 22a formed so as to penetrate in its thickness direction. The engaging hole 22a of the embodiment is formed so as to be cut out from the base end of the engaging portion 22 toward the tip end.

[0015] As shown in Figs. 1 to 4, the engagement receiving portion 24 is provided at a position corresponding to the engagement portion 22 when the outer shell 12 is closed. The engagement receiving portion 24 is provided at an edge portion of the wall portion 20 different from the edge portion where the hinge 14 is provided. The engagement receiving portion 24 can be attached to and detached from the engagement portion 22 by inserting and detaching the engagement portion 22 into and from the engagement hole 22a of the engagement portion 22. As shown in Figs. 6 and 7, the engagement receiving portion 24 is formed in a hook shape that can be passed through the engagement hole 22a and hooked on the opening edge of the engagement hole 22a. More specifically, the engagement receiving portion 24 includes a hook portion 26 that protrudes outward from the outer surface of the wall portion 20 and a retaining portion 28 that retains the engagement portion 22 engaged with the engagement receiving portion 24. The hook portion 26 is a portion that is disposed in the engagement hole 22a when the engagement portion 22 is attached to the engagement receiving portion 24, and is formed with a width that matches the width of the engagement hole 22a. The retaining portion 28 is a portion that is disposed outside the engaging portion 22 when the engaging portion 22 is attached to the engaging receiving portion 24. The retaining portion 28 extends further toward the opposite side of the opening edge of the wall portion 20 on which the engaging receiving portion 24 is provided than the hook portion 26. In other words, the retaining portion 28 extends further toward the opposite side of the base end portion of the engaging portion 22 than the hook portion 26. The retaining portion 28 protrudes obliquely toward the wall portion 20 on which the engaging receiving portion 24 is provided. When the engaging portion 22 is attached to the engaging receiving portion 24, the retaining portion 28 protrudes further toward the tip side of the engaging portion 22 than the opening edge on the tip side of the engaging portion 22 in the engagement hole 22a, and is disposed so as to overlap the engaging portion 22.

[0016] 4 and 6, the retaining portion 28 is provided adjacent to a support portion 30 formed at a distance from the hook portion 26 provided on the base side of the engagement receiving portion 24. The support portion 30 in the embodiment has a bent shape that protrudes outward from the hook portion 26, then bends toward the opposite side to the base end portion of the engagement portion 22 (the opening edge of the wall portion 20 on which the engagement receiving portion 24 is provided), and extends parallel to the wall portion 20. At the base of the retaining portion 28 in the engagement receiving portion 24, a recess 24a is formed by the support portion 30, which opens toward the opposite side to the base end portion of the engagement portion 22 (the opening edge of the wall portion 20 on which the engagement receiving portion 24 is provided).

[0017] As shown in FIG. 7, the retaining portion 28 is displaced and / or deformed when passing through the engagement hole 22a of the engagement portion 22. The displacement and / or deformation of the retaining portion 28 is restricted by the hook portion 26 provided on the base side of the engagement receiving portion 24. The retaining portion 28 is configured so that the tip of the displaced (deformed) retaining portion 28 is spaced from the wall portion 20 of the outer shell body 12. In this manner, the retaining portion 28 is configured so as not to come into contact with the wall portion 20 even if the retaining portion 28 is displaced (deformed) toward the wall portion 20. In contrast, the retaining portion 28 is configured so as to come into contact with the hook portion 26 when displaced (deformed) toward the wall portion 20. The retaining portion 28 may be configured so that the tip (the protruding end of the retaining portion 28) is spaced from the wall portion 20 by a distance equal to or greater than the plate thickness of the engagement portion 22 when the retaining portion 28 comes into contact with the hook portion 26.

[0018] As shown in FIG. 2, a holding portion 18 for holding the sound absorber 16 disposed on the inner side of the wall portion 20 may be provided on the inner side of the engagement receiving portion 24 of the wall portion 20 .

[0019] Since the engaging portion 22 of the soundproof cover 10 is provided on the outer shell 12, there is no risk of the engaging portion 22 being dropped during assembly as with clips, and the engaging portion 22 can be properly attached to the engaging receiving portion 24, and the outer shell 12 can be easily assembled in a closed state. The soundproof cover 10 can be easily attached even to an existing attachment object such as a compressor mounted on a vehicle. In addition, since the engaging portion 22 is hooked onto the engaging receiving portion 24 through the engaging hole 22a formed in the engaging portion 22, it is easy to tell whether the engaging portion 22 is hooked onto the engaging receiving portion 24, and poor installation of the engaging portion 22 can be avoided.

[0020] Since the retaining portion 28 of the engagement receiving portion 24 protrudes so as to extend obliquely toward the wall portion 20 of the outer shell body 12, the protruding end of the engagement receiving portion 24 has a tapered shape (see FIG. 6), which makes it easier to pass the engagement hole 22a of the engagement portion 22 from the outside of the engagement receiving portion 24. Furthermore, when the engagement receiving portion 24 is passed through the engagement hole 22a of the engagement portion 22, the inclined shape of the retaining portion 28 makes it easier to displace (deform) the retaining portion 28 toward the wall portion 20, and the displacement (deformation) of the retaining portion 28 from the outside to the inside also makes it easier to attach the engagement portion 22 to the engagement receiving portion 24. On the other hand, when the engagement portion 22 is attached to the engagement receiving portion 24, the retaining portion 28 can prevent the engagement portion 22 from being displaced outward, and the engagement portion 22 can be prevented from being unintentionally detached from the engagement receiving portion 24 due to vibrations or the like while the vehicle is traveling. Furthermore, due to the inclined shape of the retaining portion 28, the retaining portion 28 is less likely to be displaced (deformed) from the inside to the outside, so that the engaging portion 22 is less likely to come off the engaging receiving portion 24.

[0021] The soundproof cover 10 allows the engagement portion 22 to be attached to the engagement receiving portion 24 without using any jig or tool, and since the engagement portion 22 is easily attached to the engagement receiving portion 24, the attachment work can be done even with one hand. This improves the ease of attaching the soundproof cover 10 to the object to be soundproofed. Furthermore, the soundproof cover 10 can be easily attached even in a limited space inside a vehicle, for example, and maintenance can be improved.

[0022] When the engaging portion 22 is attached to the engaging receiving portion 24, the retaining portion 28, which has been displaced (deformed) to a certain degree, is restricted by the hook portion 26 provided on the base side of the engaging receiving portion 24, thereby helping the retaining portion 28 to get over the interfering edge of the opening of the engaging hole 22a. This makes it possible for the retaining portion 28 to pass through the engaging hole 22a more easily.

[0023] By providing the retaining portion 28 in connection with the support portion 30 formed at an interval from the hook portion 26 provided on the base side of the engagement receiving portion 24, the retaining portion 28 can be displaced (deformed) to a greater extent with a smaller force by the support portion 30 which deforms by utilizing the recess 24a between the hook portion 26. Furthermore, even if the engaging portion 22 comes off the hook portion 26 after the engaging portion 22 is attached to the engagement receiving portion 24, the engaging portion 22 is very unlikely to come off the engagement receiving portion 24 because the engaging portion 22 fits into the recess 24a.

[0024] Even if the anti-pullout portion 28 is displaced (deformed) when the engaging portion 22 is attached to the engaging receiving portion 24, the tip of the anti-pullout portion 28 (the protruding end of the anti-pullout portion 28) is separated from the wall portion 20 of the outer shell body 12, so that the engaging portion 22 can be more easily positioned between the anti-pullout portion 28 and the wall portion 20 by overriding the anti-pullout portion 28.

[0025] While pulling the engaging portion 22, the engaging receiving portion 24 is passed through the engaging hole 22a, and the engaging portion 22 is hooked onto the engaging receiving portion 24. At this time, the engaging receiving portion 24 may be held down by a portion other than the engaging portion 22 (the engaging hole 22a). In particular, if the outer shell body 12 is an elastomer molded body, the periphery of the engaging receiving portion 24 in the outer shell body 12 is easily bent, making it difficult to hook the engaging portion 22 onto the engaging receiving portion 24. Here, if the holding portion 18 is disposed inside the engaging receiving portion 24, the periphery of the engaging receiving portion 24 in the outer shell body 12 is less likely to bend, making it easier to hook the engaging portion 22 onto the engaging receiving portion 24. This makes it easier to attach the soundproof cover 10 to the object to which it is to be attached.

[0026] (Example of change) The present invention is not limited to the above, and may be, for example, as follows. The present invention is not limited to the specific description of the modified examples below. (1) The support portion may be omitted from the engagement receiving portion. As shown in FIG. (2) The soundproof cover is not limited to having the entire exterior formed of an outer shell, and a portion of the sound-absorbing body may be exposed to the outside. (3) The outer shell is not limited to a structure that opens into two parts, but may have three or more wall sections connected by hinges. (4) The soundproof cover may consist of only the outer shell, omitting the sound-absorbing body. (5) The engaging portion itself may stretch like rubber, widening the engaging hole. [Explanation of symbols]

[0027] 10 soundproof cover, 12 outer shell, 16 sound absorbing body, 18 holding portion, 22 engagement portion, 22a engaging hole, 24 engaging receiving part, 26 latching part, 28 retaining part, 30 supporting part

Claims

1. An engagement portion extending from the openable and closable outer shell and having an engagement hole; an engagement receiving portion provided at a position corresponding to the engagement portion in the closed outer shell body, the engagement portion being detachable by being inserted into and removed from the engagement hole; The engagement receiving portion protrudes obliquely toward the outer shell body and has a retaining portion that prevents the engagement portion engaged with the engagement receiving portion from coming off. A soundproof cover characterized by:

2. The retaining portion is displaced when passing through the engagement hole, 2. The soundproof cover according to claim 1, wherein the displacement of the retaining portion is restricted by a hook portion provided on a base side of the engagement receiving portion.

3. 3. The soundproof cover according to claim 1, wherein the retaining portion is connected to a support portion formed at a distance from a hook portion provided at a base side of the engagement receiving portion.

4. The retaining portion is displaced when passing through the engagement hole, 4. The soundproof cover according to claim 1, wherein a tip of the displaced retaining portion is configured to be spaced apart from the outer shell.

5. The soundproof cover according to any one of claims 1 to 4, wherein a holding portion is provided on the inside of the engagement receiving portion of the outer shell body to hold a sound absorbing body arranged on the inside of the outer shell body.

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