Speed ​​increasing device

Abstract

To provide a highly durable speed increasing device capable of increasing the speed of a rotation output input from a driving device or the like to obtain an increased rotation output. [Solution] The input section 2 of the speed increasing device 1 of the present invention comprises an inertia wheel body 3 having an input shaft 21 protruding from the center of the outside of a wheel 4 having an internal gear 18 formed thereon, and an input side cover body 24 that supports the input shaft 21 by penetrating it outward and surrounds the wheel 4 on the inside, which is formed in a concave shape. The output section 41 comprises a gear body 42 consisting of a main gear 48 of a main gear section 43 to which the output shaft 44 is connected, and a sub-gear 52 that transmits the rotation of the internal gear 18 to the main gear 48, and an output side cover body 58 in which the gear body 42 is arranged. The clamping disc 68 is configured to approximately cover the gear body 42 between it and the output side cover body 58, and is characterized in that a lid portion 71 is formed in the space formed between the input side cover body 24 and the output side cover body 58, into which lubricating liquid L can be freely injected and discharged.

Description

[Technical Field]

[0001] The present invention relates to a highly durable speed increasing device that increases the speed of rotational output input from a driving device or the like to obtain increased rotational output. [Background technology]

[0002] Conventionally, hydraulic excavators and bulldozers, which are large heavy machinery used in fields such as construction sites, civil engineering, mining, and agriculture, use hydraulic cylinders to freely operate the arms of each part, but in order to move the hydraulic cylinders, they require the use of hydraulic pumps and hydraulic motors, which place a heavy load on them.

[0003] In this case, the driving force of the diesel engine of the heavy equipment alone cannot adequately drive the hydraulic pump and hydraulic motor, so a pump speed increaser is inserted between the engine and the hydraulic pump, etc., to enable free control of the hydraulic cylinder.

[0004] Furthermore, in wind turbine generators, a speed increaser is used to increase the rotation speed of the rotor, which has a low rotation speed even though it has torque, and to transmit the increased rotational output to the generator.

[0005] In this way, speed increasers are used to increase the rotational output of prime movers and rotors such as electric motors and internal combustion engines in order to obtain a larger rotational output. For example, the speed increaser (rotation transmission device) of a hydraulic drive system described in Patent Document 1 comprises an input shaft, a rotating body connected to the input shaft, which functions as a flywheel itself and has an internal gear formed on its output side, and a gear mechanism that transmits the rotation of the rotating body to a drive output shaft provided on the output shaft gear by meshing an intermediate gear with the internal gear and meshing an output shaft gear with this intermediate gear, and regulates the axial movement of the rotating body by providing a convex portion on the outer periphery of the rotating body and providing a concave portion on the fixed frame side that surrounds the convex portion, or by providing a convex portion on the fixed frame side and providing a concave portion on the outer periphery of the rotating body that surrounds the convex portion.

[0006] According to this technology, the rotational output of an electric motor can be directly connected to a hydraulic pump or hydraulic motor via a speed increaser to drive the hydraulic pump or hydraulic motor, which can then be used as a driving source for hydraulically driven machinery such as hydraulic excavators and bulldozers, or as a driving source for a generator. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 3892840 Summary of the Invention [Problem to be solved by the invention]

[0008] Indeed, the speed increaser of Patent Document 1 is extremely advantageous in that it has a simple configuration with a small number of parts and can increase the rotational output input from a driving device, etc., to obtain increased rotational output.

[0009] However, intermediate gears and output shaft gears rotate at extremely high speeds compared to internal gears, and because they are constantly subjected to heavy loads at high temperatures, there is a high risk of teeth breakage or damage to the tooth surfaces over time.

[0010] The present invention has been made in consideration of the above circumstances, and aims to provide a highly durable speed increasing device that can increase the rotational output input from a driving device, etc., thereby obtaining increased rotational output. [Means for solving the problem]

[0011] In order to achieve the above object, the present invention provides the following.

[0012] In the invention according to claim 1, an input shaft formed in an input section and an output shaft formed in an output section are arranged opposite to each other so that their axes are on the same axis, and a holding disk is disposed inside to form an integral device, and the input section comprises an inertia wheel body in which the input shaft is protruded from the center of the outside of a wheel having an internal gear formed on its inner peripheral surface formed in a concave shape on the inside, and an input side cover body that supports the input shaft by penetrating it to the outside and surrounds the wheel on its inside formed in a concave shape, and the output section comprises The gear body is made up of a main gear of a main gear section connected to a force shaft, and a sub gear that transmits the rotation of the internal gear to the main gear, and an output side cover body that supports the output shaft penetrating to the outside with the main gear on the inside and that journals one end of the sub gear shaft of the sub gear on the inside to arrange the gear body, the sub gears are arranged radially in three directions at equal angles from the main gear as the center, and there are two of the sub gears in each direction, and the clamping disk has a diameter smaller than the inner diameter of the internal gear in The other end of the secondary gear shaft of the secondary gear is fixed. This allows the mold to be formed into a disk shape without holes, The gear body is configured to be substantially covered between the input side cover body and the output side cover body, and a space formed between the input side cover body and the output side cover body Niyun The present invention provides a speed-increasing device characterized by the formation of a lid portion that allows synovial fluid to be freely injected and discharged.

[0013] In the invention according to claim 2, Near the teeth of the internal gear and near the periphery of the inner bottom surface of the wheel, four stirring sections shaped like right triangles extending outward from the center of the input shaft in a front view are formed at equal intervals, and the stirring sections are formed with the adjacent side facing inward and the apex where the opposite side intersects with the hypotenuse facing outward, and the opposite side forms a stirring wall formed approximately perpendicular to the inner bottom surface and increasing in depth from the apex to the adjacent side, and further, a sloping surface that rises gently from the underside of the stirring wall to the inner bottom surface forms the hypotenuse where it reaches the inner bottom surface, and the stirring wall of the opposite side is arranged so that the hypotenuse is located in front and the opposite side is located behind with respect to the direction of rotation of the wheel. The present invention provides a speed increasing device as described in claim 1, characterized in that:

[0014] In the invention according to claim 3, the sub-gear of the sub-gear is provided between the clamping disc and the output side cover body. On the axis The present invention provides a speed increasing device as described in claim 1 or 2, characterized in that a guide portion is formed that is inclined toward the outermost sub-gear to guide the lubricating liquid, and the guide portion arranged in the gap of the outermost sub-gear forms two guide portions with a predetermined distance in the center, and one guide portion is formed in the gap of the intermediate sub-gear. [Effects of the Invention]

[0017] According to the invention of claim 1, there is provided a device in which an input shaft formed in an input section and an output shaft formed in an output section are arranged opposite to each other so that their axes are on the same axis, and a clamping disk is disposed inside to form an integral device, wherein the input section comprises an inertia wheel body in which the input shaft protrudes from the center of the outside of a wheel having an internal gear formed on its inner circumferential surface formed concavely on the inside, and an input side cover body that supports the input shaft by passing it through to the outside and surrounds the wheel on its concave inside, and the output section comprises a gear body consisting of a main gear of a main gear section connected to an output shaft, and a sub gear that transmits rotation of the internal gear to the main gear, and an output side cover body that supports the output shaft by passing it through to the outside with the main gear on the inside and journals one end of the sub gear shaft of the sub gear on its inside, and in which the gear body is disposed, and the sub gears are arranged radially in three directions at equal angles centered on the main gear, and there are two sub gears in each direction, and the clamping disk has a diameter smaller than the inside diameter of the internal gear in The other end of the secondary gear shaft is fixed This allows the mold to be formed into a disk shape without holes, The gear body is configured so that it is almost completely covered between the output cover body, and a lid is formed in the space between the input cover body and the output cover body so that lubricating liquid can be freely injected and discharged. This makes it possible to permanently prevent breakage of the teeth or damage to the tooth surfaces of each gear of the gear body, which is constantly subjected to heavy loads at high speeds and high temperatures.In addition, the clamping disc greatly reduces the effect of resistance from the lubricating liquid on the rotational force of each gear of the gear body, so high rotational output can be maintained while maintaining high durability.Furthermore, it becomes easier to make the internal gear larger in diameter in order to obtain high rotational output.

[0018] According to the invention described in claim 2, Near the teeth of the internal gear and near the periphery of the inner bottom surface of the wheel, four stirring sections in the shape of a right triangle pointing outward from the center of the input shaft when viewed from the front are formed at equal intervals, and the stirring sections are formed with the adjacent side facing inward and the apex where the opposite side and the hypotenuse intersect facing outward, and the opposite side forms a stirring wall formed approximately perpendicular to the inner bottom surface and increasing in depth from the apex to the adjacent side, and further, the point where the inclined surface that gently rises from the underside of the stirring wall to the inner bottom surface reaches the inner bottom surface forms the hypotenuse, and the stirring wall of the opposite side is arranged so that the hypotenuse is located forward and the opposite side is located rearward in the direction of rotation of the wheel. Rather than what I did, When the speed increasing device is installed with the axes of the input and output shafts in the horizontal direction, the lubricating liquid in the gap between the clamping disk and the inner bottom surface of the wheel is stirred for the gears in the upper half that are not immersed in the lubricating liquid. This makes it easier for the lubricating liquid to move upward when the internal gear rotates, increasing the amount of lubricating liquid adhering to the internal gear and increasing the amount of lubricating liquid that falls from above onto the gears in the upper half, permanently preventing breakage of the gear teeth and damage to the tooth surfaces and maintaining high durability. do.

[0019] According to the invention of claim 3, a sub-gear of a sub-gear is provided between the clamping disc and the output side cover body. On the axisThe guide section arranged in the gap between the outermost sub-gears forms two guide sections spaced a predetermined distance apart in the center, and one guide section is formed in the gap between the middle sub-gears.As a result, when the speed increasing device is installed with the axes of the input and output shafts horizontal, the lubricating liquid that adheres to the rotating internal gear and falls from above can be efficiently adhered to the gear in the approximately upper half, which is not immersed in the lubricating liquid, thereby permanently preventing breakage of the gear teeth and damage to the tooth surfaces and maintaining high durability. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 2 is a perspective view of the output side of the speed increasing device according to the present embodiment. [Figure 2] 1 is an exploded perspective view of a speed increasing device according to an embodiment of the present invention, seen from the input side. [Figure 3] FIG. 2 is an exploded perspective view of the speed increasing device according to the present embodiment as seen from the output side. [Figure 4] FIG. 2 is a simplified perspective front view of the output side. [Figure 5] FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. [Figure 6] FIG. 2 is an explanatory front view showing the inside of a speed increasing device filled with lubricating liquid. [Figure 7] FIG. 10 is an explanatory front view of the inside of the speed increasing device, showing that a guide portion is formed inside the speed increasing device. [Figure 8] FIG. 10 is an explanatory perspective view of the inside of the speed increasing device, showing that a guide portion is formed inside the speed increasing device. [Figure 9] FIG. 10 is an explanatory front view of the inside of the speed increasing device, showing that a guide portion is formed inside the speed increasing device. [Figure 10] FIG. 10 is an explanatory perspective view of the inside of the speed increasing device, showing that a guide portion is formed inside the speed increasing device. [Figure 11] FIG. 10 is an explanatory perspective view showing that a stirring portion is formed on the inner bottom surface of the wheel. DETAILED DESCRIPTION OF THE INVENTION

[0023] The gist of the speed increasing device according to the present invention is a device in which an input shaft formed in an input section and an output shaft formed in an output section are arranged facing each other so that their axes are on the same axis, and a holding disk is disposed inside to form an integral device, and the input section comprises an inertia wheel body in which the input shaft protrudes from the center of the outside of a wheel having an internal gear formed on its inner peripheral surface which is formed concavely on the inside, and an input side cover body which supports the input shaft penetrating outward and which surrounds the wheel on its inside which is formed concavely, and the output section comprises a main gear of a main gear section connected to the output shaft, and an internal gear The device comprises a gear body consisting of a sub gear that transmits the rotation of the toothed gear to the main gear, and an output cover body that supports the output shaft penetrating to the outside with the main gear on the inside and holds one end of the sub gear shaft of the sub gear on the inside, and the clamping disk is formed in a disk shape with a diameter smaller than the inner diameter of the internal gear and holds the other end of the sub gear shaft of the sub gear, and is configured to substantially cover the gear body between the input cover body and the output cover body, and a lid is formed in the space between the input cover body and the output cover body to allow for the injection and discharge of lubricating liquid. In other words, the device aims to provide a highly durable speed increasing device that can increase the rotation output input from a drive device or the like to obtain increased rotation output.

[0024] An embodiment of a speed increasing device 1 according to the present invention will be described below with reference to the drawings. In this description, identical or symmetrical structures and parts will generally be given the same reference numerals, and only one of the left and right sides will be described, with the other side being omitted as appropriate.

[0025] For convenience of explanation, the side on the output side shown in FIG. 1 where the output shaft 44 can be seen is referred to as the front side, and the side where the input shaft 21 can be seen is referred to as the back side.

[0026] As shown in FIGS. 1 to 3, the speed increasing device 1 according to the embodiment of the present invention is a device in which an input shaft 21 formed in an input section 2 and an output shaft 44 formed in an output section 41 are arranged opposite to each other so that their axes are coaxial, and a clamping disk 68 is disposed inside to form an integral device. The input section 2 comprises an inertia wheel body 3 in which the input shaft 21 protrudes from the center of the outside of a wheel 4 having an internal gear 18 formed on its inner circumferential surface formed in a concave shape on the inside, and an input side cover body 24 that supports the input shaft 21 penetrating outward and surrounds the wheel 4 on its inside formed in a concave shape. The output section 41 comprises a main gear 48 of a main gear section 43 to which the output shaft 44 is connected. and a sub-gear 52 that transmits the rotation of the internal gear 18 to the main gear 48; and an output-side cover body 58 that supports the output shaft 44 with the main gear 48 on the inside and passes through it on the outside, and that holds one end 53 a of the sub-gear shaft 53 of the sub-gear 52 on the inside to arrange the gear body 42. The clamping disk 68 is formed in a disk shape with a diameter smaller than the inner diameter of the internal gear 18, holds the other end 53 b of the sub-gear shaft 53 of the sub-gear 52, and is configured to substantially cover the gear body 42 between itself and the output-side cover body 58, and a lid portion 71 is formed in the space E formed between the input-side cover body 24 and the output-side cover body 58, and allows lubricating liquid L to be freely injected and discharged.

[0027] The sub-gears 52 are arranged radially in three directions at equal angles around the main gear 48, with two or more sub-gears 52 in each direction.

[0028] As shown in FIGS. 7 and 9, a guide portion 69 is formed between the clamping disc 68 and the output side cover body 58, inclined toward the sub gear 52 to guide the lubricating liquid L.

[0029] Furthermore, as shown in FIG. 11, a concave stirring portion 7 is formed on the inner bottom surface 6 of the wheel 4 .

[0030] That is, in this embodiment of the rotation mechanism, as shown in Figure 4, the internal gear 18 of the inertia wheel body 3, which rotates on the outside and is connected to the input shaft 21, meshes with the three outermost sub-gears 52a, which in turn mesh with the three intermediate sub-gears 52b, and the intermediate sub-gears 52b mesh with the main gear 48 located in the center, thereby causing the output shaft 44 to rotate at high speed.

[0031] Furthermore, the clamping disk 68 can significantly reduce the effect of the resistance of the lubricating liquid L filled inside on the rotational force of each of the gears 48, 52a, 52b of the gear body 42.

[0032] In the present invention, the lubricating liquid L mainly refers to lubricating oil, but any liquid other than oil that functions as a lubricating liquid can also be used. In this embodiment, the description is based on the assumption that the lubricating liquid L is filled to a level below the main gear 48 as shown in FIG. 6, but the amount of lubricating liquid L filled is not particularly limited.

[0033] In addition, in this embodiment, the lid portion 71, which allows the lubricating liquid L to be freely injected and discharged, is configured at two locations, namely, an injection port lid portion 71a and an outlet port lid portion 71b, which are made up of a female screw that penetrates from the output side cover body 58 to the inside and a male screw that seals it, as shown in Figure 1. However, the position, number, shape, etc. of the lid portion 71 are not limited to this embodiment, and various modifications and changes are possible within the scope of the gist of the present invention.

[0034] In the following description and drawings, the lid portion 71 is omitted.

[0035] The configuration of each part of the speed increasing device 1 will be specifically described below with reference to the drawings.

[0036] As shown in Figures 3 and 5, the input section 2 of the speed increasing device 1 is composed of an inertia wheel body 3 and an input side cover body 24. The inertia wheel body 3 is composed of a wheel 4 and an input shaft 21. The input side cover body 24 supports the input shaft 21 by penetrating it outward and surrounds the wheel 4 with its concave inner side, and is connected to the output side cover body 58 described later.

[0037] The wheel 4 is composed of a wheel base 5 and an internal gear 18. The wheel base 5 is made of metal and has an input shaft mounting hole 14 drilled in the center of its circular shape when viewed from the front. The wheel base 5 has a first protruding step portion 15 that is annular when viewed from the front and has a concave inner surface on its periphery. Eight female threads 16a are formed evenly on the surface of the first protruding step portion 15. The internal gear 18 is made of metal and has eight evenly distributed countersunk holes 19a that pass through it. The internal gear 18 is fastened to the wheel base 5 with eight bolts 20 to form the wheel 4.

[0038] That is, the internal gear 18 is formed on the inner peripheral surface of the wheel base 5, the inside of which is formed concave, so that the tooth tips are directed toward the center of the wheel base 5.

[0039] In addition, annular flanges 17a, 17b are protruded from the inside and outside of the periphery of the first protruding step portion 15 of the wheel base 5, and as shown in Figure 5, the height of the inner flange 17a is formed to a height approximately equal to or less than the thickness of the internal gear 18.

[0040] In addition, as shown in Figure 11, a concave stirring portion 7 can be formed on the concave inner bottom surface 6 of the wheel base 5 to stir the lubricating liquid L in the gap between the inner bottom surface 6 and the clamping disc 68 described later.

[0041] In this embodiment, the stirring portions 7 are formed by cutting four stirring portions 7 at equal intervals near the periphery of the inner bottom surface 6, close to the teeth of the internal gear 18, and when viewed from the front, they have the shape of a right triangle extending outward from the center of the input shaft mounting hole 14, with the adjacent side 8 facing inward and the vertex 11 where the opposite side 9 and the hypotenuse 10 intersect facing outward.

[0042] In addition, the opposite side 9 forms a stirring wall 12 that is cut approximately perpendicularly to the inner bottom surface 6 and increases in depth from the apex 11 to the adjacent side 8, and the point where an inclined surface 13 that gently rises from the underside of the stirring wall 12 to the inner bottom surface 6 reaches the inner bottom surface 6 forms the hypotenuse 10.

[0043] The stirring wall 12 of the opposite side 9 is formed so as to hold and move the internal lubricating liquid in the rotational direction as the wheel 4 rotates, i.e., so that the oblique side 10 is located in front of the rotational direction and the opposite side 9 is located in the rear.

[0044] The number, position and shape of the stirring portion 7 are not limited to those in this embodiment, and any configuration may be used as long as the stirring portion 7 can move while retaining the lubricating liquid therein in the rotational direction.

[0045] As shown in Figures 3 and 15, the input shaft 21 is made of metal and has an outer diameter that allows its tip to be press-fitted into the input shaft mounting hole 14, and is formed with a shaft fixing flange 22 that abuts against the outer surface of the wheel 4.It is formed as a round bar of a predetermined length, with a key groove (not shown) formed from that end to its rear end, and the input shaft 21 is press-fitted into the wheel 4 to protrude, thereby forming an integrated inertia wheel body 3.

[0046] As shown in Figures 2, 3 and 5, the input side cover body 24 is made of metal and has a cylindrical shape that protrudes outward from the center of a circular shape when viewed from the front, and a bearing protrusion 25 that has a rearward-flaring step formed on the inner surface of the rear end, at which point an input shaft through hole 26 is drilled. It also has a connecting protrusion 28 that is annular when viewed from the front and forms the outer periphery that forms a concave interior, and has twenty-four female threads 29b that thread onto the bolts 20 formed evenly on the end face. A second convex step portion 30 that is annular when viewed from the front is formed inside the connecting protrusion 28, and the outer periphery of the wheel base 5 and the outer flange 17b are configured to approximately engage with each other by the connecting protrusion 28 and the second convex step portion 30 to the extent that they do not come into contact with each other.

[0047] In addition, a circular step 31 consisting of an extremely low circular step is formed on the concave bottom surface of the input side cover body 24, and a transfer tongue 32 having a roughly triangular shape and a through hole 33 is protruded from the outer peripheral surface of the connecting protrusion 28.

[0048] The outer ring of a donut-shaped input bearing 27 (Fujikoshi Corporation: Model 6020) is pressed into the input shaft through hole 26, and the input shaft 21 is pressed into the inner ring of the input bearing 27 to support the input shaft 21, and the wheel 4 is surrounded inside the input side cover body 24, which is formed in a concave shape.

[0049] An oil seal (NOK Corporation: Model AE4079E0) (not shown) and a C-shaped retaining ring (Ochiai Corporation: Model STW-100) are formed on the outer side of the input bearing 27. An annular groove (not shown) is formed in a predetermined position of the input shaft 21, and the C-shaped retaining ring is disposed in the groove.

[0050] Next, as shown in Figures 2, 3 and 5, the output section 41 of the speed increasing device 1 is composed of a gear body 42 and an output side cover body 58, and the gear body 42 is composed of a main gear section 43 consisting of a main gear 48 connected to the output shaft 44, and a sub gear 52 that transmits the rotation of the internal gear 18 to the main gear 48, and the output side cover body 58 supports the output shaft 44 passing through it to the outside with the main gear 48 on the inside, and also supports one end (rear end side) 53a of the sub gear shaft 53 of the sub gear 52 on the inside to arrange the gear body 42, and is connected to the output side cover body 58.

[0051] As shown in FIG. 5, the main gear portion 43 comprises a main gear 48, an output shaft 44, and a flange 50 that presses and fixes them together. The main gear 48 is made of metal and has a roughly doughnut shape with teeth formed on its outer periphery. The center is stepped, with a small-diameter opening that forms an output shaft mounting hole 49 like a countersunk hole, and a large-diameter opening where the flange 50 is disposed.

[0052] The output shaft 44 is made of metal and has an outer diameter that allows its tip to be press-fitted into the output shaft mounting hole 49. It also has four female threads 45c that can be threaded through the countersunk holes 51b in the flange 50, a main gear fixing flange 47 that abuts against the outer surface of the main gear 48, and a keyway (not shown) extending from the flange to the rear end. The output shaft 44 is a round bar of a predetermined length.

[0053] The thickness of the output shaft mounting hole 49 of the main gear 48 is formed to be slightly thicker than the length from the main gear fixing flange 47 to the tip of the output shaft 44, so that the flange 50 can press the main gear 48 against the tip of the output shaft 44.

[0054] The flange 50 is made of metal and has a circular block shape that is large enough to fit over the opening on the large diameter side of the main gear portion 43, and has four countersunk holes 51b formed therein.

[0055] By forming the main gear portion 43 in this manner, the tip of the output shaft 44 is press-fitted into the output shaft mounting hole 49 of the main gear 48, and the tip is screwed and fixed with four pressure bolts 46 so that the flanges 50 clamp and press the periphery of the output shaft mounting hole 49 of the main gear 48, thereby forming the main gear portion 43 in which the main gear 48 and the output shaft 44 are firmly integrated.

[0056] The output side cover body 58 is made of metal and has a disk-shaped gear bearing protrusion 59 of a predetermined thickness that protrudes outward concentrically from the center of its circular shape when viewed from the front, and an output shaft through-hole 60 is drilled at that location.It also has 24 countersunk holes 64c evenly formed in a connecting abutment surface 63 that forms the outer periphery and is circular when viewed from the front, through which bolts 20 are inserted.A third convex step portion 65 that is circular when viewed from the front is formed on the inside of the connecting abutment surface 63, and is formed so that the outer periphery of the wheel base 5 and the inner flange portion 17a approximately engage with the inner wall of the input side cover body 24 by the third convex step portion 65 to the extent that they do not abut against each other.

[0057] The outer ring of a donut-shaped output bearing 61 (Fujikoshi Corporation: Model 6020) is pressed into the output shaft through-hole 60, and the output shaft 44 is pressed into the inner ring of the output bearing 61 to support the output shaft 44, and the main gear 48 is arranged inside the output side cover body 58.

[0058] Additionally, a C-shaped retaining ring (Ochiai Corporation: Model STW-100) (not shown) is fitted to the outside of the output bearing 61, and a flanged bushing 62 made of POM resin (shown in Figures 1 and 5) is fitted to the outermost part. The C-shaped retaining ring is disposed in an annular groove (not shown) formed in a predetermined position on the output shaft 44.

[0059] As shown in Figures 2, 3, and 5, the secondary gear 52 is made of metal and has a roughly donut shape with teeth formed on its outer surface. Inside it, a secondary gear bearing 55 (Misumi Corporation: Model B6008ZZ) is installed, and the secondary gear shaft 53 is press-fitted into the secondary gear bearing 55.

[0060] The sub-gear shaft 53 is made of metal and has a sub-gear fixing flange 54 formed approximately in the center, and its rear end (one end) 53a is pressed into a first sub-gear shaft fixing hole 66 drilled in the output side cover body 58, and its front end (other end) 53b, which is slightly shorter than the rear end 53a, is pressed into the sub-gear bearing 55 so that the sub-gear shaft 53 protrudes from the sub-gear bearing 55 to an extent that a clamping disk 68 described later can be pressed into, thereby fixing the sub-gear 52 to the output side cover body 58.

[0061] A metal annular collar 56 is fitted onto the tip end 53b of the sub-gear shaft 53 so that the clamping disc 68 and the sub-gear 52 do not come into contact with each other when the clamping disc 68 is press-fitted into the clamping disc 68 (described later).

[0062] The sub gears 52 according to this embodiment are arranged radially in three directions at equal angles around the main gear 48, and each direction is made up of two sub gears 52.

[0063] As shown in Figures 2 and 5, the clamping disk 68 is made of metal and formed into a disk shape with a diameter smaller than the inner diameter of the internal gear 18, and has six second sub-gear shaft fixing holes 67 formed therein into which the tip side (other end) 53b of the sub-gear shaft 53 is press-fitted to secure it, and is configured so that the gear body 42 is approximately covered between it and the output side cover body 58.

[0064] The diameter of the clamping disk 68 is preferably such that the teeth of the outermost sub-gear 52a are exposed when viewed from the front.

[0065] Furthermore, a guide portion 69 that is inclined toward the sub gear 52 and guides the lubricating liquid L can be formed between the clamping disk 68 and the output side cover body 58 .

[0066] In this embodiment, as shown in Figures 7 to 10, the guide portion 69 will be described as being formed on the inner surface of the clamping disk 68, but the guide portion 69 may also be formed on the output side cover body 58 as long as it is between the clamping disk 68 and the output side cover body 58.

[0067] As shown in Figures 7 and 8, the guide portion 69 is made of a metal strip-shaped plate that is curved into an arc and is concentric with the main gear 48 toward each tooth of the outermost sub-gear 52a and the intermediate sub-gears 52b, and protrudes from the inner surface of the clamping disk 68 so as to be positioned in the gaps between the sub-gears 52 arranged radially in three directions.

[0068] Furthermore, the guide portion 69a arranged in the gap of the outermost sub-gear 52a forms two guide portions 69a with a predetermined distance in the center, and one guide portion 69b is formed in the gap of the intermediate sub-gear 52b.

[0069] By forming the guide portion 69 in this manner, when the speed increasing device 1 is installed with the axes of the input and output shafts 21, 44 horizontal, the lubricating liquid L that adheres to the rotating internal gear 18 and falls from above can be efficiently adhered to the auxiliary gear 52 in approximately the upper half.

[0070] The guide portion 69 is not limited to the shape described above. For example, as shown in Figures 9 and 10, the guide portion 69a, which is located in the gap between the outermost sub-gears 52a, may be formed in the shape of a curved arc-shaped block made of metal concentric with the main gear 48, with its inner side adjacent to the guide portion 69b formed in the gap between the intermediate sub-gears 52b. As long as the guide portion 69 is inclined toward the sub-gears 52 between the clamping disk 68 and the output-side cover body 58 and guides the lubricating liquid L, various modifications and variations are possible within the scope of the gist of the present invention.

[0071] As described above, the input section 2, which is made up of the inertia wheel body 3 and the input side cover body 24, and the output section 41, which is made up of the gear body 42 and the output side cover body 58, are formed by butting together the connecting protrusion 28, which forms the female thread 29b of the input side cover body 24, and the connecting abutment surface 63, which forms the countersunk hole 64c of the output side cover body 58, and screwing them together with twenty-four bolts 20, thereby forming a speed increasing device 1, which incorporates a wheel 4 having an internal gear 18, a sub-gear 52, a main gear 48, and a clamping disc 68 (including a guide portion 69), and is arranged opposite to the input shaft 21 and output shaft 44 so that their axes are on the same axis.

[0072] The speed increasing device 1 having the above-mentioned configuration is a device 1 in which the input shaft 21 formed in the input section 2 and the output shaft 44 formed in the output section 41 are arranged opposite to each other so that their axes are on the same axis, and a clamping disk 68 is disposed inside to form an integral device, and the input section 2 comprises an inertia wheel body 3 in which the input shaft 21 protrudes from the center of the outside of a wheel 4 having an internal gear 18 formed on its inner circumferential surface formed concavely on the inside, and an input side cover body 24 that supports the input shaft 21 by penetrating it to the outside and surrounds the wheel 4 on its inside formed concave, and the output section 41 comprises a gear body 42 consisting of a main gear 48 of a main gear section 43 to which the output shaft 44 is connected and a sub gear 52 that transmits the rotation of the internal gear 18 to the main gear 48, and a gear body 42 that supports the output shaft 44 by penetrating it to the outside and supports the sub gear 52 on its inside with the main gear 48 on the inside. and an output side cover body 58 that holds one end 53a of the sub-gear shaft 53 and arranges the gear body 42, and the clamping disk 68 is formed in a disk shape with a diameter smaller than the inner diameter of the internal gear 18, and holds the other end 53b of the sub-gear shaft 53 of the sub-gear 52, and is configured to substantially cover the gear body 42 between itself and the output side cover body 58, and a lid portion 71 is formed in the space between the input side cover body 24 and the output side cover body 58, which allows lubricating liquid L to be freely injected and discharged. This makes it possible to permanently prevent breakage of the teeth and damage to the tooth surfaces of the gears 48, 52 of the gear body 42, which is constantly subjected to large loads at high rotation speeds and high temperatures, and the clamping disk 68 can significantly reduce the effect of resistance due to the lubricating liquid L on the rotational force of the gears 48, 52 of the gear body 42, so that high rotation output can be maintained while maintaining high durability.

[0073] In addition, the sub-gears 52 are arranged radially in three directions at equal angles around the main gear 48, and there are two or more sub-gears 52 in each direction, which makes it easy to make the internal gear 18 larger in diameter in order to obtain high rotational output.

[0074] Furthermore, a guide portion 69 is formed between the clamping disc 68 and the output side cover body 58, inclined toward the sub-gear 52 to guide the lubricating liquid L. Therefore, when the speed increasing device 1 is installed with the axes of the input and output shafts 21, 44 horizontal, the lubricating liquid L that adheres to the rotating internal gear 18 and falls from above can be efficiently adhered to the gears in the approximately upper half portion, which are not immersed in the lubricating liquid L. This permanently prevents breakage of the gear teeth and damage to the tooth surfaces, and maintains high durability.

[0075] Furthermore, by forming a concave stirring portion 7 on the inner bottom surface 6 of the wheel 4, when the speed increasing device 1 is installed with the axes of the input and output shafts 21, 44 horizontal, the lubricating liquid L in the gap between the clamping disc 68 and the inner bottom surface 6 of the wheel 4 is stirred for the gears in the approximately upper half that are not immersed in the lubricating liquid L, making it easier for the lubricating liquid L to move upward when the internal gear 18 rotates, increasing the amount of lubricating liquid L adhering to the internal gear 18 and increasing the amount of lubricating liquid L that falls from above onto the gears in the approximately upper half, permanently preventing breakage of the gear teeth and damage to the tooth surfaces and maintaining high durability.

[0076] Furthermore, a guide section 69 is formed between the clamping disc 68 and the output side cover body 58, inclined toward the sub-gear 52 to guide the lubricating liquid L, and a concave stirring section 7 is formed on the inner bottom surface 6 of the wheel 4.As a result, when the speed increasing device 1 is installed with the axes of the input and output shafts 21, 44 horizontal, the lubricating liquid L that adheres to the rotating internal gear 18 and falls from above can be efficiently adhered to the gears in the approximately upper half, which are not immersed in the lubricating liquid L.Furthermore, by stirring the lubricating liquid L in the gap between the clamping disc 68 and the inner bottom surface 6 of the wheel 4, the lubricating liquid L is more likely to move upward when the internal gear 18 rotates, increasing the amount of lubricating liquid L that adheres to the internal gear 18 and increasing the amount of lubricating liquid L that falls from above to the gears in the approximately upper half, which further permanently prevents breakage of the gear teeth and damage to the tooth surfaces, and maintains high durability.

[0077] Although a preferred embodiment of the speed increasing device 1 according to the present invention has been described above, the present invention is not limited to a specific embodiment, and various modifications and variations are possible. [Explanation of symbols]

[0078] E space L Lubricant 1 Speed ​​increasing device 2 Input section 3 Inertia wheel body 4 wheels 6 Inner bottom surface 7 Stirring section 18 Internal gear 21 Input shaft 24 Input side cover body 41 Output section 42 Gear body 43 Main gear section 44 Output shaft 48 Main gear 52 Sub gear 53 Sub-gear shaft 53a One end (rear end side) 53b Other end (tip side) 58 Output side cover body 68 Clamping disc 69 Information Department 71 Lid

Claims

1. An input shaft formed in the input section and an output shaft formed in the output section are arranged opposite each other so that their axes are on the same axis, and a clamping disk is disposed inside to form an integral device, The input portion includes an inertia wheel body having an internal gear formed on an inner peripheral surface of the wheel, the internal surface of which is formed concave, and the input shaft protruding from the center of the outer surface of the wheel; an input side cover body that supports the input shaft by penetrating it to the outside and surrounds the wheel on its inside, the input side cover body having a recessed shape; The output portion includes a gear body including a main gear of a main gear portion connected to the output shaft and a sub-gear that transmits rotation of the internal gear to the main gear; an output side cover body that supports the output shaft with the main gear positioned on the inside and that journals the output shaft to the outside, and journals one end of the sub gear shaft of the sub gear on the inside, and in which the gear body is disposed; The sub-gears are arranged radially in three directions at equal angles around the main gear, and two sub-gears are arranged in each direction, the clamping disk has a diameter smaller than the inner diameter of the internal gear and is formed into a disk shape without a hole by pivotally fastening the other end of the sub-gear shaft of the sub-gear, and is configured to substantially cover the gear body between itself and the output side cover body, A speed increasing device characterized in that a lid portion is formed in the space between the input side cover body and the output side cover body, and a lubricating liquid can be freely injected and discharged.

2. The speed increasing device described in claim 1, characterized in that four stirring sections shaped like right triangles extending outward from the center of the input shaft when viewed from the front are formed at equal intervals near the teeth of the internal gear and near the periphery of the inner bottom surface of the wheel, and each stirring section is formed with the adjacent side facing inward and the apex where the opposite side and the hypotenuse intersect facing outward, and the opposite side forms a stirring wall formed approximately perpendicular to the inner bottom surface that increases in depth from the apex to the adjacent side, and further, the point where a sloping surface that gradually rises from the underside of the stirring wall to the inner bottom surface reaches the inner bottom surface forms the hypotenuse, and the stirring wall of the opposite side is arranged so that the hypotenuse is located in front and the opposite side is located in the rear in the direction of rotation of the wheel.

3. 3. The speed increasing device according to claim 1, wherein a guide portion is formed between the clamping disk and the output side cover body, inclined toward the sub-gear shaft of the sub-gear to guide the lubricating liquid, and the guide portion arranged in the gap between the outermost sub-gears forms two guide portions with a predetermined distance in the center, and one guide portion is formed in the gap between the intermediate sub-gears.

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