JP2002054453A - Engine generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine generator to improve decorative appearance, giving an impression of a large panel, by covering the whole of the upper part of the front of a body frame by a control panel and effecting protection of the control panel. SOLUTION: An engine 3 and a generator 4 are disposed in a body frame 2 formed by bending a rod-form frame approximately along the side of a rectangular parallelepiped. A lateral frame 7 is positioned astride a space between a pair of right and left longitudinal frames 6 of which the front side of the body frame 2 consists, and the control panel 9 is mounted. In a so formed engine generator 1, the control panel 9 is disposed in a manner to cover the front of the lateral frame 7, an opening 17 is formed in the control panel 9, and a part of the lateral frame 7 is protruded through the opening 17 and frontward from the front of the control panel 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a protection structure for an operation panel of an engine generator.

[0002]

2. Description of the Related Art An engine generator has a substantially rectangular parallelepiped shape. For example, as shown in Registered Design No. 996639, a body frame is formed by bending a rod-like frame material so as to substantially extend along the side of the rectangular parallelepiped. An engine and a generator driven by the engine are arranged in the body frame. A fuel tank is provided on the upper part of the main frame. A horizontal frame is erected above a pair of left and right vertical frames constituting the front side of the main body frame.

An operation panel made of resin is attached to the front side of the main body frame along the horizontal frame and below the main body frame. The fuel tank is mounted on the rear side of the operation panel with its upper part exposed above the horizontal frame. The horizontal frame protects the front of the generator, and prevents the operation panel or the fuel tank from directly colliding with a wall or other obstacles while the generator is moving.

[0004] In such an engine generator, the display information and operation parts on the operation panel are increased, dust is prevented on the rear side, and the appearance of the engine is improved by covering the upper part of the fuel tank on the front side. In order to achieve this, there is a demand that the shape of the operation panel be enlarged so as to cover the entire upper part on the front side of the main body frame.

[0005]

However, if the operation panel is enlarged and attached to the main body frame so as to cover the fuel tank as a whole, the horizontal frame is covered by the operation panel and the protection function is impaired, and the collision with the wall occurs. For example, the operation panel may be damaged due to the above. In this case, if the horizontal frame is provided on the front surface of the operation panel, the operation panel is vertically divided into two vertically by the horizontal frame, and the effect of improving the design appearance cannot be obtained.

The present invention has been made in consideration of the above-mentioned prior art, and aims at improving the design appearance and protecting the operation panel by giving the impression of a large panel by covering the entire front upper portion of the main body frame with the operation panel. The purpose is to provide an engine generator.

[0007]

In order to achieve the above object, according to the present invention, an engine and a generator driven by the engine are provided in a main body frame formed by bending a rod-like frame material substantially along the side of a rectangular parallelepiped. In an engine generator having a horizontal frame installed between a pair of left and right vertical frames constituting a front side of the main body frame and having an operation panel attached, the operation panel is disposed so as to cover a front surface of the horizontal frame. An engine generator is provided, wherein an opening is provided in the operation panel, and a part of the horizontal frame projects forward from the opening from the front surface of the operation panel.

According to this structure, the operation panel covers the front surface of the main body frame to give the impression that the operation panel has a large surface, thereby improving the appearance in terms of design. In addition, the horizontal frame is partially formed from the opening of the operation panel. Protruding into
The operation panel can be effectively protected by the lateral frame of the protruding portion. The operation panel may have one or more openings. If a plurality of locations are provided, the strength is increased by the connecting portion between the openings, and at the time of molding the resin, the molten resin flows smoothly and a highly reliable molded article can be obtained.

In a preferred configuration example, a fuel tank is provided at the rear of the operation panel, and the horizontal frame has a substantially horizontal U-shape in vertical cross section, and is formed with an opening surface of its internal space facing rearward. An elastic body is mounted in the internal space of the horizontal frame, and the front portion of the fuel tank is supported via the elastic body.

[0010] According to this configuration, the horizontal panel having a horizontal U-shaped cross section with the opening surface facing rearward passes through the opening formed in the operation panel by a predetermined length, and protrudes toward the front side from the operation panel. And an elastic body can be fitted rearward into the horizontal frame, and the fuel tank behind the elastic tank can be supported via the elastic body. This makes it possible to stably support the fuel tank without causing vibration or rattling. In this case, in order to securely mount the elastic body in the internal space of the horizontal frame, the width of the horizontal frame of the elastic body mounting portion may be increased.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are schematic views showing the structure of the engine generator according to the present invention.

FIG. 1 is a front view. As shown, the engine generator 1 according to the present invention has a body frame 2 on the outside.
In the body frame 2, an engine 3 and a generator 4 (FIGS. 4 and 12) driven by the engine are arranged. The generator 4 is a cooling fan 11 (FIG. 4)
Together with the fan case 10. A fuel tank 5 is provided on an upper portion of the main body frame 2. A fuel supply port is provided in an upper portion of the fuel tank 5 and a cap 1 is provided.
2 is provided.

The main body frame 2 includes an upper frame 13 (FIG. 9).
11) and a lower frame 14 fitted therein, and is formed by combining pipe materials bent so as to have a substantially rectangular parallelepiped shape as a whole. This body frame 2
The front, rear, left and right four vertical frames 6, the left and right upper pipes 45 connecting the front and rear vertical frames 6, the front horizontal frame 7, the rear rear frame 42, and the front and rear lower frames 14 It is composed of two floor frames 8 to be connected.
A horizontal frame 7 is installed on an upper portion between a pair of left and right vertical frames 6 constituting the front side of the main body frame 2. An operation panel 9 made of resin is attached to the front side of the main body frame 2. The fuel tank 5 is mounted on the rear side of the operation panel 9 with its upper part exposed above the horizontal frame 7.

The operation panel 9 comprises a panel front portion 15 and a panel upper edge portion 16. The panel upper edge portion 16 is attached so as to cover the front surface of the fuel tank 5. The operation panel 9 has an opening 17 along the horizontal frame 7, and a projecting portion 18 of the horizontal frame 7 projects from the opening 17. The projecting portion 18 of the horizontal frame 7 is connected to the operation panel 9 on the front of the generator 4.
For example, the operation panel or the fuel tank is prevented from directly colliding with a wall or other obstacles while the generator is moving.

The number of the openings 17 may be one or more (two in the figure). If there are multiple locations, the connection between the openings 1
9, the strength is increased, and at the time of molding the resin, the molten resin flows smoothly, so that a highly reliable molded article can be obtained.

The panel front part 15 is fixed to four front parts of the engine generator 1 by bolts 26, and the operation part 2
0 is attached, and an attachment port (opening) 21 for a recoil starter 22 is provided. The operation unit 20 includes a power switch 23,
An output terminal 24, a display lamp 25 and the like are provided. Engine 3
Together with the generator 4, on the four rubber mounts 28 a to 28 d on the floor frame 8,
7 and the second bracket 61.

FIG. 2 is a top view. The horizontal frame 7 and the panel upper edge 16 are provided with elastic bodies 29 and 30 for suppressing vibration of the fuel tank 5 and the panel (FIG. 7). This will be described later.

FIG. 3 is a rear view. The engine 3 includes a carburetor 31, a breather pipe 32, and an air cleaner 35. Fuel is supplied from the fuel tank 5 through a fuel cock 33 and a fuel pipe 34. Muffler 3 having exhaust port 36
7 is attached in the middle of the exhaust pipe 38. The muffler 37 is covered by a muffler cover 39. A rear frame 42 is provided on an upper portion between the left and right vertical frames 6 on the rear surface, and a flange 43 of the fuel tank 5 is mounted on the rear frame 42.

FIG. 4 is a rear view showing the configuration of the generator 4. The nut 5 is attached to the end 49 of the crankshaft 48 of the engine 3.
0 fixes the flywheel magneto 46. On the inner surface of the flywheel magnet 46, a rotor 4 composed of a magnet is provided.
4 is fixed, and a stator 47 composed of an electromagnetic coil is fixedly arranged on the cylinder block side to face this. The generator 4 is constituted by the rotor 44 and the stator 47. The cooling fan 11 is provided outside the flywheel magnet 46. The generator 4 and the fan 11 are covered with a fan case 10 and fixed to the first bracket 27 with a nut.

FIG. 5 is a right side view. Crankshaft 48
As will be described later, a second bracket 61 is fixed to a protruding portion 60 of a crankcase 59 accommodating (FIG. 4) with a bolt 62, and is mounted on the floor frame 8 via a rubber mount 28c.

FIG. 6 is a left side view. Each of the rubber mounts 28 a to 28 d described above is made of a rubber cushion material 40 mounted between a base plate 51 and a receiving plate 52. Each receiving plate 52 is fixed to the first bracket 27 or the second bracket 61 with bolts 53. The base plate 51 is fixed to the floor frame 8. Each rubber mount is inclined toward the center of the main body frame 2. As a result, the engine 3 can be supported from the lower four obliquely outward directions toward the center,
The engine can be mounted stably, and the reliability of the vibration isolation function increases. On the left side, a side frame 54 is provided above the upper frame 13 and extends between the front and rear vertical frames 6.
A mounting piece 67 is fixed to the side frame 54 as shown in FIG. A CPU (not shown) for controlling the power generation output via the mounting piece 67 and a CPU cover 55 covering the CPU are fixed with bolts 56. 57 is a choke lever and 58 is an ignition control box.

FIG. 7 is a cross-sectional view taken along the line CC of FIG. 2, and is a schematic view showing a mounting structure of the fuel tank. Horizontal frame 7
Has a substantially horizontal U-shape in vertical cross section and is formed with the opening surface of its internal space facing rearward. An elastic body 29 is attached to the internal space of the horizontal frame 7, and a flange of the fuel tank is provided by the elastic body 29. 43, and supports the front part of the fuel tank 5. Thereby, the vibration of the fuel tank 5 is absorbed and is stably held. In this case, in order to securely mount the elastic body in the internal space of the horizontal frame, the width W1 of the horizontal frame of the elastic body mounting portion may be increased as shown in FIG. In the example shown in the figure, the elastic body 29 is provided with a two-step notch in order to provide the flange 43 having various shapes with versatility. In the illustrated example, the elastic body 29 is inserted halfway through the protruding portion 18 of the horizontal frame 7, but the elastic body 29 may be formed so as to be fully inserted to the tip.

The operation panel 9 has a front part 1 as described above.
5 is fixed to the main body frame 2 by four bolts 26 (FIG. 1). Therefore, its upper edge 16 is free,
There is a possibility that it will vibrate and rattle or emit noise if it is used as it is. To prevent this, in the present embodiment, as shown in FIG. 7, a concave portion 63 is formed at the end of the upper edge portion 16, and a locking piece 64 fixed to the fuel tank 5 via the elastic body 30 is formed in the concave portion 63. And hold it in place. Thereby, it is possible to stably support the upper edge portion 16 of the operation panel 9 without generating vibration or rattling, and it is possible to enlarge the outer shape of the operation panel 9 and enhance the design effect.

FIG. 8 is a front view of the operation panel 9. As described above, the operation panel 9 includes the panel front portion 15 and the panel upper edge portion 16, has two openings 17 for projecting the horizontal frame, and has an opening 21 for a recoil starter. The operation panel 9 is provided with the operation unit mounting recess 4.
1 to which the operation unit 20 is attached. The operation panel 9 has mounting holes 65 at four corners of the front portion 15 and is fixed at four places on the front surface of the engine generator 1 by bolts 26 (FIG. 1).

9 to 11 show a single unit of the upper frame 13, FIG. 9 is a front view, FIG. 10 is a top view, and FIG. 11 is a left side view. As shown, the horizontal frame 7 and the rear frame 42 are provided on the front side and the rear side of the upper frame 13, and the side frame 54 is provided on the left side. As shown in FIG. 9, an operation panel 9 is provided on the left and right vertical frames 6 on the front side.
A panel bracket 79 having an operation panel mounting hole 66 corresponding to the mounting hole 65 provided in FIG. 8 is fixed.

As shown in FIG. 10, the horizontal frame 7 has two protruding portions 18 protruding from the opening of the operation panel, and each protruding portion 18 is formed with a wide portion 18a. The width W1 of the wide portion 18a is larger than the width W2 of the adjacent portion, and the fuel tank 5 described with reference to FIG.
The elastic body 29 for sandwiching the flange 43 is mounted. Thereby, the volume of the elastic body 29 is increased and the shape is enlarged to securely sandwich the flange of the fuel tank, and the elastic body 29 can be securely held in the horizontal frame. The left side frame 54 is provided with a mounting piece 67 and a projection nut 68 (FIG. 11).

As shown in FIG.
Has two mounting pieces 67, each of which has a projection nut 68. Through this, the CPU that drives and controls the generator and the CPU cover 55 that covers the CPU are fixed with bolts 56 (FIG. 6). On the rear mounting piece 67,
A hole 69 for a choke lever is provided.

FIG. 12 is a bottom view of the engine generator.
At four corners of the crankcase bottom surface 3a of the engine 3, engine support portions 76a to 76d are provided by bolts. The support portion 76b is directly fixed to the rubber mount 28b, the support portions 76a and 76d are fixed to the rubber mounts 28a and 28d via the first bracket 27, and the support portion 76c is fixed to the rubber mount 28c via the second bracket 61. Is done. In this manner, by mounting the support portions at the four corners of the engine on the rubber mount in a state of being spread outward through the first and second brackets 27 and 61, the engine and the generator can be separated from the center of gravity G. The weight is supported on a rubber mount. For this reason, vibrations generated entirely from the center of gravity can be effectively suppressed. The fan case 10 of the generator 4 is fixed to the center of the first bracket 27 with two bolts (or nuts) 70.

FIG. 13 shows the second bracket 61,
(A) is a side view, (B) is a top view, and (C) is a front view. The second bracket 61 is formed by bending a sheet metal, and the projections 60 (FIG. 5) of the crankcase are sandwiched between the upper piece 61b and the lower piece 61c, so that these can be fixed with one bolt 62 (FIG. 5). Can be firmly fastened together. 77 is a projection nut with which the bolt 62 is screwed. The edge 61a of the lower piece 61c is bent to increase rigidity against a bending load.

FIG. 14 shows the first bracket, wherein (A) is a top view and (B) is a side view. This first bracket 2
7 is formed by bending press working of a sheet metal, and its edge 7
Numeral 1 is bent to increase rigidity against a bending load. A fan case supporting portion 72 is formed at the center of the first bracket 27 so as to protrude, and bolt insertion holes 78 are formed at both ends thereof.

FIG. 15 is an enlarged view around the mounting opening of the operation panel, and FIG. 16 is a sectional view taken along line BB of FIG. As shown, the operation panel 9 has a mounting opening 21 for mounting a recoil starter (not shown) for starting the engine 3.
Are provided, and at the peripheral edge of the mounting port 21, insertion holes 73 for a protector described later are provided at six places above the mounting port 21.

FIGS. 17A and 17B are schematic views showing the structure of the protector. FIG. 17A is a top view, FIG. 17B is a front view, FIG. 17C is a side view, and FIG. It is sectional drawing. FIG. 18 is a sectional view taken along line DD of FIG. 15 in a state where the protector is mounted.

As shown in the drawing, the protector 74 is formed by bending a sheet metal, and
1 has an insertion piece 75 at a position corresponding to the insertion hole 73. By inserting the insertion piece 75 into the insertion hole 73 and bending the end thereof as shown in FIG. 18, the protector 74 can be fixedly held and attached to the attachment port 21 of the operation panel. Thus, the operation panel 9 can be protected when the recoil starter is used.

Normally, the engine generator is used by being placed on the ground or the floor, so that the recoil starter is pulled upward when the engine is started, and rubs against the upper edge of the mounting opening 21. Therefore, the protector 74 is attached to the upper edge of the mounting opening.
The operation panel 9 is effectively protected by attaching.

[0035]

As described above, according to the present invention, the front panel of the main body frame is covered with the operation panel having a large outer shape to improve the design appearance, and the horizontal frame is partially formed from the opening of the operation panel. By projecting, the operation panel can be effectively protected by the lateral frame of the projecting portion. In this case, if the openings of the operation panel are provided at a plurality of locations, the strength is increased by the connecting portions between the openings, and the molten resin flows smoothly when molding the resin, so that a highly reliable molded article can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing the structure of an engine generator according to the present invention.

FIG. 2 is a top view showing the structure of the engine generator according to the present invention.

FIG. 3 is a rear view showing the structure of the engine generator according to the present invention.

FIG. 4 is a rear view showing the structure of the generator portion of the engine generator according to the present invention.

FIG. 5 is a right side view showing the structure of the engine generator according to the present invention.

FIG. 6 is a left side view showing the structure of the engine generator according to the present invention.

FIG. 7 is a cross-sectional view taken along the line CC of FIG. 2, and is a schematic diagram showing a mounting structure of a fuel tank.

FIG. 8 is a front view of an operation panel.

FIG. 9 is a front view of the upper frame.

FIG. 10 is a top view of the upper frame.

FIG. 11 is a left side view of the upper frame.

FIG. 12 is a bottom view of the engine generator.

FIG. 13 shows a second bracket, (A) is a side view,
(B) is a top view, and (C) is a front view.

FIG. 14 shows a first bracket, wherein (A) is a top view,
(B) is a side view.

FIG. 15 is an enlarged view around the recoil starter mounting opening of the operation panel.

FIG. 16 is a sectional view taken along line BB of FIG. 15;

FIG. 17 is a schematic diagram showing the structure of a protector;
(A) is a top view, (B) is a front view, (C) is a side view,
(D) is an AA sectional view of (B).

FIG. 18D shows a state where the protector is mounted.
-D sectional drawing.

[Explanation of symbols]

1: engine generator, 2: body frame, 3: engine, 4: generator, 5: fuel tank, 6: vertical frame,
7: horizontal frame, 8: floor frame, 9: operation panel, 1
0: Fan case, 11: Cooling fan, 12: Cap, 13: Upper frame, 14: Lower frame, 15: Panel front, 16: Panel upper edge, 17: Opening, 18: Projection, 18a: Wide Part, 19: connection part, 20: operation part,
21: Recoil starter mounting opening, 22: Recoil starter, 23: Power switch, 24: Output terminal, 25: Indicator lamp, 26: Bolt, 27: First bracket, 28a
28d: rubber mount, 29: elastic body, 30: elastic body, 31: vaporizer, 32: breather pipe, 33 fuel cock, 34: fuel pipe, 35: air cleaner, 36:
Exhaust port, 37: muffler, 38: exhaust pipe, 39: muffler cover, 40: rubber cushion material, 41: recess for mounting operation part, 42: rear frame, 43: flange, 44: rotor, 45: upper pipe, 46 : Flywheel magneto, 4
7: stator, 48: crankshaft, 49: end of crankshaft, 50: nut, 51: base plate, 52: receiving plate, 5
3: bolt, 54: side frame, 55: CPU cover, 56: bolt, 57: choke lever, 58: ignition control box, 59: crankcase, 60: protrusion,
61: second bracket, 62: bolt, 63: recess, 6
4: locking piece, 65: mounting hole, 66: operation panel mounting hole,
67: mounting piece, 68: projection nut, 69:
Choke lever hole, 70: fan case mounting bolt,
71: edge, 72: edge, 73: insertion hole, 74: protector, 75: insertion piece, 76a to 76d: engine support, 77: projection nut, 78: bolt insertion hole, 79: panel bracket.

Claims (2)

[Claims] An engine and a generator driven by the engine are disposed in a main frame formed by bending a bar-shaped frame material substantially along the sides of a rectangular parallelepiped, and a pair of left and right parts constituting a front side of the main frame. An engine generator having a horizontal frame installed between the vertical frames and an operation panel attached thereto, wherein the operation panel is disposed so as to cover a front surface of the horizontal frame, an opening is provided in the operation panel, and the opening is provided from the opening. An engine generator characterized in that a part of the horizontal frame projects forward from the front of the operation panel. 2. A fuel tank is provided at a rear side of the operation panel. The horizontal frame has a substantially horizontal U-shape in vertical section, and is formed with an opening surface of an internal space thereof facing rearward. The engine generator according to claim 1, wherein an elastic body is mounted in the internal space, and a front portion of the fuel tank is supported via the elastic body.