engine

Abstract

To provide an engine with an increased power generation capacity.SOLUTION: An engine 100 comprises a cylinder block 10, a plurality of alternators 30, 40, and a bracket 20. The plurality of alternators 30, 40 is attached to a side part of the cylinder block 10 via the bracket 20. Preferably, the bracket 20 comprises a first mounting part 60 and a second mounting part 70. The first mounting part 60 is provided on the upper side of the bracket 20. The second mounting part 70 is provided on a lower side of the bracket 20. Each of the plurality of alternators 30, 40 is attached to the respective one of the first mounting part 60 and the second mounting part 70.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an engine. [Background technology]

[0002] The engine described in Patent Document 1 includes a cylinder block and a single alternator attached to the side of the cylinder block. The alternator receives power from the end of the crankshaft to rotate and generate electricity to power various electronic devices. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-101998 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, power consumption has increased with the increasing number of electronic devices installed on work machines, and it has become difficult for a single alternator installed on a conventional engine to supply the necessary power.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide an engine that achieves increased power generation capacity. [Means for solving the problem]

[0006] The engine of the present invention includes a cylinder block, a plurality of alternators, and a bracket, the plurality of alternators being attached to a side of the cylinder block via the bracket. [Effects of the Invention]

[0007] According to the present invention, an engine is provided that realizes an increase in power generation capacity by mounting a plurality of alternators. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of an engine according to an embodiment; [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 2 is an exploded perspective view of a bracket, a first alternator, and a second alternator. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings, in which the same or corresponding parts are designated by the same reference numerals and will not be described repeatedly.

[0010] First, the appearance of an engine 100 according to this embodiment will be described with reference to Figures 1 and 2. Figure 1 is a perspective view of the engine 100. Figure 2 is a partially enlarged perspective view of the engine 100.

[0011] As shown in FIGS. 1 and 2, the engine 100 includes a cylinder block 10, an engine output shaft 11, a belt 12, a first alternator 30, and a second alternator 40.

[0012] The belt 12 is wound around the pulleys of the engine output shaft 11, the first alternator 30, and the second alternator 40, as well as other pulleys. The first alternator 30 and the second alternator 40 are each driven to rotate by power transmitted from the engine output shaft 11, and each generates electricity to drive various electronic devices.

[0013] The engine 100 further includes a bracket 20 for mounting the first alternator 30 and the second alternator 40 to the side of the cylinder block 10 .

[0014] Next, a description will be given of the shape of the bracket 20. Fig. 3 is an enlarged perspective view of the bracket 20.

[0015] As shown in FIG. 3, the bracket 20 has an attached portion 50, a main body portion 90, a first attachment portion 60, and a second attachment portion .

[0016] The mounting portion 50 is a member for mounting the bracket 20 to the cylinder block 10, and extends in the vertical direction. The mounting portion 50 includes a first portion 51 formed on the upper side with a narrow width in the front-to-rear direction, and a second portion 52 formed on the lower side with a wide width in the front-to-rear direction. The left-to-right direction in the drawing corresponds to an example of the "first horizontal direction," and the front-to-rear direction corresponds to an example of the "second horizontal direction."

[0017] A first through hole 53 and a second through hole 54 are formed near the upper end of the first portion 51. The first through hole 53 and the second through hole 54 are arranged side by side in the front-to-rear direction. The first through hole 53 and the second through hole 54 correspond to an example of "plurality of first mounting holes."

[0018] A third through hole 55, a fourth through hole 56, and a fifth through hole 57 are formed near the lower end of the second portion 52. The third through hole 55 and the fourth through hole 56 are arranged to be aligned with each other in the front-to-rear direction. The third through hole 55 and the fifth through hole 57 are arranged to be aligned with each other in the up-down direction. The third through hole 55 and the fifth through hole 57 correspond to an example of "plurality of second mounting holes."

[0019] The bracket 20 is fastened to the side of the cylinder block 10 by bolts using the first through-hole 53 to the fifth through-hole 57.

[0020] The main body 90 is a plate-like member extending to one side in the left-right direction from near the boundary between the first portion 51 and the second portion 52 of the attached portion 50. The first attachment portion 60 has a first wall portion 61, a second wall portion 62, a third wall portion 63, and a fourth wall portion 64 that stand upright from the main body 90. The first wall portion 61 to the fourth wall portion 64 are connected to each other so as to extend around the entire circumference.

[0021] The first wall portion 61 is a rectangular plate-shaped portion extending parallel to the mounting portion 50. The second wall portion 62 extends from one of two edges extending in the up-down direction of the first wall portion 61 to one side in the left-right direction. The upper edge of the second wall portion 62 curves convexly downward to correspond to the shape of the first alternator 30. The third wall portion 63 extends from the other of two edges extending in the up-down direction of the first wall portion 61 to one side in the left-right direction. The upper edge of the third wall portion 63 also curves convexly downward to correspond to the shape of the first alternator 30. The fourth wall portion 64 is a rectangular plate-shaped portion extending parallel to the first wall portion 61.

[0022] At the connecting portion between the first wall portion 61 and the second wall portion 62, a first screw hole 65 is formed in a boss extending in the vertical direction. At the connecting portion between the first wall portion 61 and the third wall portion 63, a second screw hole 66 is formed in a boss extending in the vertical direction. At the connecting portion between the third wall portion 63 and the fourth wall portion 64, a third screw hole 67 is formed in a boss extending in the vertical direction. At the connecting portion between the second wall portion 62 and the fourth wall portion 64, a fourth screw hole 68 is formed in a boss extending in the vertical direction.

[0023] The second mounting portion 70 is in contact with the underside of the main body portion 90, extends to one side in the left-right direction, and has a shape that is approximately mirror-symmetrical to the first mounting portion 60. However, in the left-right direction, the second mounting portion 70 is shifted closer to the mounted portion 50 than the first mounting portion 60. FIG. 4 shows that the second mounting portion 70 has a fifth wall portion 72, a sixth wall portion 74, a fifth screw hole 76, a sixth screw hole 77, and a seventh screw hole 78. The lower edge of the fifth wall portion 72 is curved convexly upward to correspond to the shape of the second alternator 40. The main body portion 90 has an opening 80 that communicates between the first mounting portion 60 and the second mounting portion 70 to reduce weight.

[0024] Next, the attachment of the first alternator 30 and the second alternator 40 to the bracket 20 will be described with reference to Fig. 4. Fig. 4 is an exploded perspective view of the bracket 20, the first alternator 30, and the second alternator 40.

[0025] As shown in FIG. 4 , the first alternator 30 has a first body portion 31, a first boss hole 32, a second boss hole 33, a third boss hole 34, and a fourth boss hole 35. The first alternator 30 is fastened to a first mounting portion 60 of the bracket 20 with bolts using the first boss hole 32 to the fourth boss hole 35. The second alternator 40 has a second body portion 41, a fifth boss hole 42, a sixth boss hole 43, a seventh boss hole 44, and an eighth boss hole 45. The second alternator 40 is fastened to a second mounting portion 70 of the bracket 20 with bolts using the fifth boss hole 42 to the eighth boss hole 45. As a result, the second alternator 40 is disposed closer to the cylinder block 10 than the first alternator 30. The first alternator 30 and the second alternator 40 may have different power generating capacities.

[0026] According to the embodiment, the engine 100 is provided with an increased power generation capacity due to the incorporation of the first alternator 30 and the second alternator 40.

[0027] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit and scope of the present invention. Furthermore, various inventions can be formed by appropriately combining multiple components disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. The drawings mainly show each component in a schematic manner for ease of understanding, and the number of each component shown may differ from the actual number due to the convenience of drawing. Furthermore, the components shown in the above embodiments are merely examples and are not particularly limited, and various modifications are possible without substantially departing from the effects of the present invention.

[0028] For example, in the embodiment, the number of alternators mounted on engine 100 is two, but this is not limiting. The number of alternators mounted on engine 100 may be three or more. [Industrial Applicability]

[0029] The present invention can be used in the field of engines. [Explanation of symbols]

[0030] 10 Cylinder block 20 Bracket 30 No. 1 alternator 40 No. 2 alternator 50 Mounting part 53 First through hole (plurality of first mounting holes) 54 Second through-hole (plurality of first mounting holes) 55 Third through hole (plurality of second mounting holes) 56 4th Through Hole 57 Fifth through hole (plurality of second mounting holes) 60 First mounting part 70 Second mounting part 80 aperture 90 Main body 100 Engine

Claims

1. A cylinder block, A plurality of alternators; A bracket and Equipped with the alternators are attached to the side of the cylinder block via the brackets, the bracket has a first mounting portion and a second mounting portion; any one of the plurality of alternators is attached to the first attachment portion and the second attachment portion, the bracket further includes a plate-shaped main body portion between the first mounting portion and the second mounting portion, The main body portion has an opening that communicates with the first mounting portion and the second mounting portion.

2. The first mounting portion is provided on an upper side of the bracket, The engine according to claim 1 , wherein the second mounting portion is provided on a lower side of the bracket.

10. The engine of claim 1.

3. The engine according to claim 2 , wherein the first mounting portion and the second mounting portion are offset from each other in the first horizontal direction.

4. 4. The engine according to claim 3, wherein the second alternator attached to the second mounting portion is disposed closer to the cylinder block than the first alternator attached to the first mounting portion.

5. The bracket has a mounting portion, The attached portion is a plurality of first mounting holes provided in an upper portion of the mounting portion; a plurality of second mounting holes provided in a lower portion of the mounting portion; and one of the plurality of first mounting holes and the plurality of second mounting holes is arranged to be aligned with one another in a second horizontal direction, and the other is arranged to be aligned with one another in a vertical direction; The engine according to claim 1 , wherein the bracket is attached to the cylinder block via the attachment portion.

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