JP6398120B2 - Soundproof cover for engine generator - Google Patents

Description

  The present invention relates to a soundproof cover for an engine generator that suppresses the spread of noise generated from the engine generator to the outside.

  The generator driven by the engine has a small and portable type and can be used in various places. When the engine is operated, noise may be generated. Therefore, when the engine generator is used in a residential area or the like, it is necessary to suppress the spread of the noise to the outside. In order to suppress the spread of noise to the outside, it is known to cover an engine engine with a soundproof cover for an engine generator. As a conventional technique related to a soundproof cover for an engine generator, there is a technique disclosed in Patent Document 1.

  The technology disclosed in Patent Document 1 includes a storage case that can store a portable generator driven by an engine, and an exhaust case that is connected to the storage case and through which exhaust gas generated in the engine can pass. It is a soundproof cover. A center panel is disposed adjacent to one end of the storage case, and a panel opening through which exhaust gas generated in the engine can pass is formed in the center panel.

  When the engine generator is stored in the soundproof cover, the generator is placed on a pedestal disposed at the lower part of the storage case, and is slid together with the pedestal toward the center panel and stored in the storage case. Thereby, the engine generator is wrapped in the soundproof cover, and the exhaust gas discharge port of the engine is located at a predetermined position with respect to the panel opening.

  Here, since the soundproof case is formed of a steel plate, it is heavy and requires labor to carry. Furthermore, in order to position an engine generator reliably, it is necessary to prepare a base for every engine generator, and parts cost increases. It would be desirable to have a soundproof cover for an engine generator that can be manufactured inexpensively and has high portability.

Japanese Patent No. 5591781

  An object of the present invention is to provide a soundproof cover for a generator that can be manufactured at a low cost, and is lightweight and easy to carry.

According to the first aspect of the present invention, there is provided a storage case capable of storing a portable generator driven by an engine, and an exhaust case connected to the storage case and capable of passing exhaust gas generated in the engine. In a soundproof cover for an engine generator for suppressing the spread of noise that can be generated by the operation of the engine to the outside,
A center panel is disposed adjacent to one end of the storage case,
A fixing member for fixing the generator is attached to the center panel, and a panel opening through which exhaust gas generated in the engine can pass is formed.
The panel opening is attached with a sealing material capable of contacting the periphery of the exhaust gas outlet of the engine,
In both the storage case and the exhaust case, a heat-resistant cylindrical sound insulation sheet is supported by a frame material, and is connected via a line fastener provided along the outer periphery of the center panel. A soundproof cover for engine generators.

  As described in claim 2, preferably, the fixing member is detachable with respect to each of the generator and the center panel.

  In the invention according to claim 1, both the storage case capable of storing a portable generator driven by the engine and the exhaust case capable of passing the exhaust gas generated in the engine have a cylindrical sound insulation sheet having heat resistance. Is supported by a frame material. And these storage case and exhaust case are connected through the wire fastener provided along the outer periphery of the center panel.

  That is, both the storage case and the exhaust case constituting the soundproof case have a tent-like frame structure composed of the sound insulation sheet and the frame material. In addition, these cases can be connected only with line fasteners.

  Compared with a soundproof cover made of a steel plate or the like, the soundproof cover according to the present invention can be manufactured at low cost and is easy to assemble. Furthermore, since it is lightweight, it is easy to carry and is suitable for a portable generator.

  Further, a fixing member for fixing the generator is attached to the center panel. In the prior art, it is necessary to attach the generator to the center panel by sliding a pedestal prepared for each engine generator. On the other hand, in the present invention, since the pedestal is unnecessary, the cost of parts can be suppressed.

  In the invention which concerns on Claim 2, a fixing member is detachable with respect to each of a generator and a center panel. If the fixing member cannot be removed, for example, if the fixing member is formed integrally with the center panel, the center panel is a dedicated component that is suitable only for each engine generator. Therefore, it is necessary to prepare a center panel for each engine generator, resulting in increased component costs.

  On the other hand, if the fixing member is detachable from the generator and the center panel, it is sufficient to prepare a fixing member for each engine generator, and the center panel does not need to be replaced. That is, the center panel can be shared. By exchanging only the fixing member, various engine work machines and the center panel can be attached, so that the cost of parts of the soundproof cover can be reduced.

It is a disassembled perspective view of the soundproof cover for engine generators by Example 1 of this invention. It is a figure explaining the state by which the soundproof cover for engine generators shown by FIG. 1 was assembled, and the generator was accommodated. It is sectional drawing of the soundproof cover in which the generator shown by FIG. 2 was accommodated. It is a figure explaining the fixing method of a generator to the sound-insulation cover for engine generators shown by FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
<Example>
Please refer to FIG. FIG. 1 shows a soundproof cover 10 for a portable generator 40 driven by an engine.

  The soundproof cover 10 includes a storage case 20 that can store a portable generator 40, a center panel 12 disposed adjacent to one end of the storage case 20, and the generator 40 with respect to the center panel 12. The first bracket 70 and the second bracket 80 for fixing at a predetermined position, the sealing material 19 attached to the opening 15 (panel opening 15) formed in the center panel 12, and the outer periphery of the center panel 12 The fastener 60 is provided along the portion 14 and connected to the storage case 20, and the exhaust case 30 is connected to the storage case 20 via the fastener 60.

  The storage case 20 includes a storage exterior portion 21 formed by bonding a polyvinyl chloride sheet to a sound insulation sheet made of batting material, and is supported by a plurality of storage portion poles 27 (framework materials 27).

  Specifically, the storage exterior portion 21 has a cylindrical shape, and has a rectangular bottom portion 22 and an arch portion in which a side wall and a ceiling are integrally formed by extending upward from two longitudinal sides of the bottom portion 22. 23 and a storage lid portion 24 that covers one end of the arch portion 23. A third wire fastener 63 that engages with the edge of the arch portion 23 is attached to the edge of the storage lid portion 24.

  The storage lid portion 24 is formed with an intake slit 25 that serves as an intake port for air taken in by an engine that drives the generator 40, and a wiring hole 26 through which wiring connected to the generator is passed.

  The storage portion pole 27 that supports the storage exterior portion 21 includes six support poles 28 that extend from the center of each vertex and long side of the bottom portion 22 to the center of the ceiling, and three rings 16 that are provided on the ceiling of the arch portion 23. It consists of a ceiling pole 29 that is inserted and supports the periphery of the ceiling of the arch part 23.

  The opening 15 formed in the center panel 12 is a hole for guiding exhaust gas generated in the engine of the generator 40 to the exhaust case 30.

  The fastener 60 is formed by providing two line fasteners 61 and 62 along the longitudinal direction of the elongated connecting member 18 having flexibility. The two line fasteners 61 and 62 include a first line fastener 61 connected to the storage case 20 and a second line fastener 62 connected to the exhaust case 30.

  The exhaust case 30 is a member through which exhaust gas generated in the engine of the generator 40 flows. The exhaust gas is flowed into the exhaust case 30 to lower the temperature, and then discharged to the outside of the exhaust case 30. That is, it can be said that the exhaust case 30 is a member through which exhaust gas generated in the engine can pass. The exhaust case 30 includes a plurality of exhaust portion poles 37 and an exhaust exterior portion 31 formed by bonding a polyvinyl chloride sheet to an aramid fiber excellent in heat resistance.

  Specifically, the exhaust exterior portion 31 includes a rectangular bottom portion 32, an arch portion 33 in which a side wall and a ceiling are integrally formed by extending upward from two longitudinal sides of the bottom portion 32, and the arch portion. And an exhaust lid portion 34 that covers one end of the portion 33.

  A fourth wire fastener 64 that engages with the edge of the arch portion 33 is attached to the edge of the exhaust lid portion 34. An exhaust hole 35 through which exhaust gas generated from the engine is exhausted is formed in the exhaust lid portion 34.

  The exhaust part pole 37 that supports the exhaust exterior part 31 is inserted into the four support poles 38 extending from each vertex of the bottom part 32 to the center of the ceiling and the three rings 16 provided on the ceiling of the arch part 33, and the arch part A ceiling pole 39 that supports the ceiling periphery of 33.

  A sound absorbing sheet 54 is provided on the bottom 22 of the storage case 20. Similarly, a sound absorbing sheet 54 is provided on each of the bottom 32 and the exhaust lid 34 of the exhaust case 30. Details will be described later. Next, a state where the generator 40 is housed in the soundproof cover 10 will be described.

  Please refer to FIG. The storage case 20 and the exhaust case 30 are connected via a first wire fastener 61 and a second wire fastener 62 attached to the connecting member 18. Thereby, a semi-cylindrical soundproof case is formed.

  The generator 40 is stored in the storage case 20 and is fixed to the center panel 12 via the first bracket 70 and the second bracket 80. When the third wire fastener 63 is closed, the storage lid portion 24 is closed, and the storage of the generator 40 is completed.

  On the other hand, the exhaust lid portion 34 is closed by closing the fourth wire fastener 64 attached to the exhaust case 30. Hereinafter, the inside of the soundproof cover 10 in which the generator 40 is housed will be described in detail.

  Please refer to FIG. A first pocket 51 is provided at the bottom 22 of the storage case 20, and a sound absorbing sheet 54 made of glass wool is stored in the first pocket 51.

  Similarly, the bottom portion 32 and the exhaust lid portion 34 of the exhaust case 30 are also provided with a second pocket 52 and a third pocket 53, respectively, and a sound absorbing sheet 54 is placed inside the second pocket 52 and the third pocket 53. It is stored.

  Extending portions 65, 65 extending toward the center of the center panel 12 are formed on the inner surface of the connecting member. The outer peripheral portion 14 of the center panel 12 is disposed in contact with both the extending portions 65 and 65.

  The first bracket 70 attached to the upper portion of the center panel 12 fixes a grip portion 41 that is formed on the upper portion of the generator 40 and is gripped when the generator 40 is moved. The second bracket 80 attached to the lower portion of the center panel 12 fixes the leg portions 43 and 43 on the discharge port 42 side of the generator 40 (only one leg portion 43 is shown in FIG. 3). ) The detail of the 1st bracket 70 and the 2nd bracket 80 is demonstrated with the next figure.

  In a state where the first bracket 70 and the second bracket 80 are attached, the discharge port 42 is in close contact with the sealing material 19.

  Reference is made to FIG. The first bracket 70 is a C-shaped first attachment portion 71 attached to the upper portion of the center panel 12 and a C-shape that is formed integrally with the first attachment portion 71 and fixes the grip portion 41 of the generator 40. First fixing portion 72.

  In the first fixing portion 72, three first turning portions 73 that are bent outward are formed at a portion that contacts the grip portion 41 of the generator 40. A first attachment hole 75 to which the first bracket 70 is attached is formed in the upper portion of the center panel 12. The first attachment hole 75 is formed slightly smaller than the first attachment portion 71.

  When the generator 40 is fixed, the first attachment portion 71 is attached to the center panel 12 by being fitted into the first attachment hole 75 formed in the center panel 12. Next, the grip portion 41 of the generator is moved toward the opened portion in the C shape. The gripping part 41 is inserted into the first fixing part 72 and fixed. Thereby, the grip part 41 is fixed to the center panel 12.

  Reference is made to FIG. The second bracket 80 includes a T-shaped second attachment portion 81 attached to the lower portion of the center panel 12 and a rectangular second fixing portion 82 formed integrally with the second attachment portion 81. .

  The second fixing portion 82 is formed with fitting holes 83 and 83 into which the leg portions 43 and 43 that support the generator 40 are fitted. Each of the fitting holes 83, 83 is formed with four second turning portions 84 that are bent toward the direction in which the diameter of the hole increases. A second attachment hole 85 to which the second bracket is attached is formed in the lower portion of the center panel 12. The second attachment hole 85 is formed to be slightly smaller than the second attachment portion 81.

  When the generator 40 is fixed, the second attachment portion 81 is attached to the center panel 12 by being fitted into a second attachment hole 85 formed in the center panel 12. The leg portions 43 and 43 of the generator 40 are inserted into the fitting holes 83 and 83, respectively. Thereby, the leg parts 43 and 43 are fixed to the center panel 12.

Next, the operation and effect of the present invention will be described.
Please refer to FIG. The storage case 20 includes a storage exterior part 21 formed by bonding a polyvinyl chloride sheet to a sound insulation sheet made of batting material, and is supported by a plurality of storage part poles 27. Similarly, the exhaust case 30 is formed by supporting an exhaust exterior portion 31 formed by bonding a polyvinyl chloride sheet to an aramid fiber excellent in heat resistance, by a plurality of exhaust portion poles 37. These cases can be connected only by the fastener 60 provided in the longitudinal direction of the long connecting member 18.

  Compared to a conventional soundproof cover made of a steel plate or the like, the soundproof cover 10 according to the present invention can be manufactured at low cost and is easy to assemble. Furthermore, since it is lightweight, it is easy to carry and suitable for the portable generator 40.

  Further, a first bracket 70 and a second bracket 80 for fixing the generator 40 are attached to the center panel 12. In the prior art, it is necessary to attach the generator 40 to the center panel 12 by sliding a pedestal prepared for each generator 40. On the other hand, in the present invention, a pedestal is unnecessary, and the cost of parts can be reduced.

  Please refer to FIG. The first bracket 70 and the second bracket 80 are detachable from the generator 40 and the center panel 12, respectively. If the first bracket 70 and the second bracket 80 are both formed integrally with the center panel 12 and cannot be removed from the center panel 12, the center panel 12 only fits the individual generator 40. It becomes a dedicated part. Therefore, it is necessary to prepare the center panel 12 for each generator 40, which increases the part cost.

  On the other hand, if the first bracket 70 and the second bracket 80 are detachable from the generator 40 and the center panel 12, the center panel 12 need not be replaced. That is, the center panel 12 can be shared. By exchanging only the first bracket 70 and the second bracket 80, the various generators 40 and the center panel 12 can be attached, so that the component cost of the soundproof cover 10 can be reduced.

  The storage exterior portion according to the present invention is formed by bonding a polyvinyl chloride sheet to a sound insulation sheet made of batting material, and the exhaust exterior portion is made of an aramid fiber excellent in heat resistance and a polyvinyl chloride sheet. Although it is formed by bonding, other materials may be used as long as they have heat resistance and sound insulation, and they can be combined as appropriate.

  Furthermore, the poles that support these exterior parts include a support pole and a ceiling pole. However, as long as the exterior part is supported and a space is formed, the poles can be appropriately combined.

  The soundproof cover for a generator of the present invention is suitable for a portable generator covered with a resin cover.

DESCRIPTION OF SYMBOLS 10 ... Soundproof cover 11 ... Center panel 12 ... Outer peripheral part 15 ... Opening part 18 ... Connecting member 19 ... Sealing material 20 ... Storage case 21 ... Storage exterior part 27 ... Storage part pole 30 ... Exhaust case 31 ... Exhaust exterior part 31
37 ... exhaust part pole 40 ... generator 61-64 1st line fastener-4th line fastener 65 ... extension part 70 ... 1st bracket 72 ... 1st fixing | fixed part 73 ... 1st turning part 80 ... 2nd bracket 82 ... 2nd fixing | fixed part 83 ... fitting hole 83,83
84 ... Second punching section

Claims (2)

A storage case capable of storing a portable generator driven by an engine; and an exhaust case connected to the storage case and capable of passing an exhaust gas generated in the engine. In the soundproof cover for engine generators to suppress the spread of the noise obtained to the outside,
A center panel is disposed adjacent to one end of the storage case,
A fixing member for fixing the generator is attached to the center panel, and a panel opening through which exhaust gas generated in the engine can pass is formed.
The panel opening is attached with a sealing material capable of contacting the periphery of the exhaust gas outlet of the engine,
In both the storage case and the exhaust case, a heat-resistant cylindrical sound insulation sheet is supported by a frame material, and is connected via a line fastener provided along the outer periphery of the center panel. A soundproof cover for engine generators. The soundproof cover for an engine generator according to claim 1, wherein the fixing member is detachable from each of the generator and the center panel .

Images