JP2008064317A - Series of hypoid speed reducer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a series of a hypoid speed reducer capable of achieving reduction of the noise and the cost, miniaturization and improvement of the productivity simultaneously while obtaining a high speed reduction ratio. <P>SOLUTION: The hypoid speed reducer 1 having a hypoid gear set 4 includes a four-stage type hypoid speed reducer having 4 stages of gear sets 4, 5, 6, 7 in a single gearbox and capable of housing a four-stage type hypoid speed reduction mechanism where the first stage gear set is the hypoid gear set 4; and two or three-stage type hypoid speed reducer having the hypoid gear set and one or two stages of a parallel axis gear set connected to the hypoid gear set. Respective gearboxes in the four-stage type, three-stage type and two-stage type hypoid speed reducers are not identical, and a connection dimension with a driven device in the four-stage type one is identical with a connection dimension with a driven device in the two or three-stage type one. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hypoid reducer used in a drive system such as a conveyor of a logistics system and its series, and in particular, while being able to obtain a high reduction ratio, at the same time, low noise, low cost, and miniaturization. The present invention relates to a hypoid reducer capable of improving productivity and the series thereof.

  Conventionally, in a field where high efficiency, low noise, or shortened axial direction of a driven shaft is required, a hypoid speed reduction provided with a hypoid pinion and a hypoid gear set that meshes with the hypoid pinion. The device has been widely applied, and various hypoid reduction gears have been proposed (see, for example, Patent Document 1).

  These conventionally known hypoid reduction gears realize a reduction ratio of 1/5 to 1/240 that may be required by the user by a reduction mechanism in which one or two parallel shaft gear sets are connected to a hypoid gear set. It is.

  By the way, in recent years, in the field of transport logistics equipment such as a conveyor which is a main application, a hypoid reduction gear having a high reduction ratio exceeding 1/240 has been required. In response to such a request, a parallel shaft gear set 504 is further added to the preceding stage (between the motor 503 and the three-stage hypoid reduction gear 501) of the known three-stage hypoid reduction gear 501 as shown in FIG. Thus, a hypoid reduction device 505 that realizes a high reduction ratio is provided.

Japanese Patent No. 2866247

  However, in the conventional hypoid reduction gear 505 that realizes a high reduction ratio, a parallel shaft gear set 504 is added to the front stage of the three-stage hypoid reduction gear 501 (between the motor 503 and the three-stage hypoid reduction gear 501). Because of the structure, when combined with the motor 503, the parallel shaft gear set 504, which is louder than the hypoid gear set during driving, is disposed at a position closest to the motor 503 and is driven at a high speed. There is a problem that it is difficult to realize low noise, which is one of the merits of the device.

  In order to achieve the same noise reduction as the hypoid gear, it is necessary to correct the teeth of the parallel shaft gears 502 and 503 with high accuracy, crowning, tooth surface grinding, etc., resulting in higher costs and lower productivity. There was also a problem of end up.

  Further, when the parallel shaft gear set 504 is added, it is necessary to prepare a gear box 506 or the like for housing the parallel shaft gear set 504. The cost increases due to an increase in the number of parts, and the parallel shaft gear set 504 has a shaft. The apparatus tends to increase in size in the radial direction, and when used as a geared motor in combination with the motor 503, it is difficult to install the apparatus.

  The present invention has been made to solve such problems, and while being able to obtain a high reduction ratio, at the same time, noise reduction, cost reduction, miniaturization, productivity improvement, etc. It is an object of the present invention to provide a hypoid speed reducer and a series thereof.

  The present invention relates to a hypoid reduction gear including at least a hypoid gear set having a hypoid pinion and a hypoid gear set meshing with the hypoid pinion, the hypoid reduction gear having a four-stage gear set in a single gear box, In addition, the above-described problem is solved by providing a four-stage hypoid reduction gear that can accommodate a four-stage hypoid reduction mechanism whose first stage gear set is the hypoid gear set.

  According to the present invention, a four-stage hypoid reduction mechanism having a four-stage gear set in the single gear box and the first-stage gear set being a hypoid gear set can be accommodated. In addition to obtaining a reduction ratio, it is possible to easily reduce the noise of the entire hypoid reduction gear. That is, when the hypoid reduction gear is combined with a driving device, the first gear set is driven at the highest speed among the gear sets, and thus noise generated during driving tends to be a problem. By using a hypoid gear set that can reduce noise, noise can be reduced. Compared to the case where a parallel shaft gear set is added like a conventional hypoid reduction gear that achieves a high reduction ratio, the cost can be reduced and the productivity can be improved, and the device can be downsized. Its installation is easy.

  The four-stage hypoid reduction gear includes a first intermediate shaft provided with the hypoid gear, a second intermediate shaft connected to the first intermediate shaft via a second gear set, and the first intermediate shaft. A second intermediate shaft and a third intermediate shaft connected via a third gear set, and the second and third intermediate shafts are connected to an axis of a pinion shaft on which the hypoid pinion is formed. If it arrange | positions so that it may be located on the same plane which has an orthogonal relationship, compactization of a hypoid reduction gear (especially compactification of the axial center direction of a pinion shaft) is attained. Further, if the output shaft of the four-stage hypoid speed reducer is arranged so as to be orthogonal to the axis of the pinion shaft on which the hypoid pinion is formed, further downsizing (especially in the radial direction of the pinion shaft) can be achieved. It becomes feasible.

  Also, the first gear set and the four-stage hypoid reduction device are provided in a single gear box that can accommodate a four-stage hypoid reduction mechanism having a four-stage gear set and the first gear set being the hypoid gear set. The intermediate gear set configured by allowing the pinion of the second gear set and the gear of the third gear set to be meshed with each other and the final gear set of the four-stage hypoid reduction gear are respectively connected and accommodated, and the first gear set If the intermediate gear set and the final gear set enable a three-speed reduction, it is possible to select a three-speed or a four-speed reduction according to the usage of the user, and members such as a gear box can be shared. Therefore, it becomes easy to change to the three-stage or four-stage deceleration.

  Many advantages can also be obtained by providing the hypoid reduction gear according to the present invention as a component of the following series.

  For example, in a hypoid reduction gear series including at least a hypoid gear set having a hypoid pinion and a hypoid gear set that meshes with the hypoid pinion, the series includes the above-described four-stage hypoid reduction gear as a hypoid reduction gear that is a component thereof. A hypoid gear set and a two- or three-stage hypoid reduction gear having one or two parallel shaft gear sets connected to the hypoid gear set, and engagement with a driven device in the four-stage hypoid reduction gear If the dimensions are the same as the mating dimensions with the driven device in the two- or three-stage hypoid reduction gear, it is possible to deal with a wide range of reduction ratios required by the user, and each reduction gear is the same. Application to driven devices. Easy to become.

  Further, in a hypoid reduction gear series including at least a hypoid gear set having a hypoid pinion and a hypoid gear set that meshes with the hypoid pinion, the series includes the above-described four-stage hypoid reduction gear as a hypoid reduction gear that is a component thereof. A hypoid gear set and a two- or three-stage hypoid reduction gear having one or two parallel shaft gear sets coupled to the hypoid gear set, and at least a part of each hypoid reduction gear constituting the series If a series having a common gear set or rotating shaft is used, the members constituting the reduction gear can be shared within the series, and the cost of the hypoid reduction gear can be reduced and the development period can be shortened. . Therefore, for example, the final gear set of each hypoid reduction gear and the rotation shaft provided with the pinion or gear constituting the final gear set may be shared.

  In the series of hypoid reduction gears including at least a hypoid gear set having a hypoid pinion and a hypoid gear set that meshes with the hypoid pinion, the series includes the above-described four-stage hypoid reduction gear as a hypoid reduction gear that is a constituent element thereof. A three-stage hypoid reducer having a frame number that is one size smaller than the four-stage hypoid reducer when the magnitude of the handling torque of the reducer is defined in the form of a frame number, and A hypoid gear set of a four-stage hypoid reduction gear constituting a series, a second gear set coupled to the hypoid gear set, a gear of the hypoid gear set, a rotary shaft provided with a pinion of the second gear set, and the series The three-stage hypoid speed reducer The same effect can be obtained even if the gear of the void gear set, the second gear set connected to the hypoid gear set, the gear of the hypoid gear set, and the rotation shaft provided with the pinion of the second gear set are shared. .

  ADVANTAGE OF THE INVENTION According to this invention, while being able to obtain a high reduction ratio, it is possible to provide a hypoid reduction device and a series thereof that can reduce noise, reduce costs, reduce size, improve productivity, and the like. .

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a cross-sectional view of a hypoid geared motor GM in which a hypoid reduction gear and a motor (driving device) according to an embodiment of the present invention are integrated, viewed from the front of the output shaft, and FIG. 2 is a developed gear train of the reduction gear. FIG.

  In each figure, 1 is a four-stage hypoid reducer, and 3 is a motor.

  The hypoid reduction device 1 includes a four-stage gear set (a hypoid reduction mechanism: described later) including a hypoid gear set 4 and first to third parallel shaft gear sets 5, 6, 7, and the four-stage gear sets 4, 5, 6, 7 has a gear box 10 that is optimally designed to be large enough to accommodate 7. Further, in the gear box 10, the first to third intermediate shafts 11, 12, 13 and the output shaft 14 are rotatably supported via bearings 40 to 47 at predetermined intervals in parallel to each other. Has been.

  As shown in FIG. 1, the second and third intermediate shafts 12 and 13 are located on a plane P1 orthogonal to the axis L1 of the motor shaft (pinion shaft) 31 on which the hypoid pinion 32 is formed. Has been placed. The output shaft 14 is formed of a hollow shaft that penetrates the gear box 10 and is arranged at a position farthest from the motor 3 side so as to be orthogonal to the axis L1 of the motor shaft (pinion shaft) 31. The reason why the hollow shaft is used as the output shaft 14 is that the hypoid reduction gear 1 can be coupled to the counterpart machine (driven device) from either the left or right side. Of course, a solid shaft may be used instead of the hollow shaft.

  The motor 3 is coupled to the side portion (left side in the figure) of the gear box 10 in such a relationship that the motor shaft 31 is orthogonal to the first intermediate shaft 11. The motor 3 includes a motor casing 33 which is an outer shell body. The motor casing 33 includes a cylindrical motor frame 34, a front motor cover 35 which closes a front opening thereof, and a rear portion which closes a rear opening. It consists of a motor cover 36. The motor shaft 31 is rotatably supported by a front bearing 37 fitted to the front motor cover 35 and a rear bearing 38 fitted to the rear motor cover 36. A two-stage seal 39 is provided on the front side of the front bearing 37 fitted to the front motor cover 35 so that the lubricating oil does not enter the motor 3 side from the hypoid reduction gear 1 side.

  The hypoid reduction gear 1 and the motor 3 are connected by connecting the front motor cover 35 to the side flange 25 of the gear box 10 with bolts 49.

  Further, as described above, the hypoid geared motor GM can be connected to the counterpart machine (driven device) from either the left or right side, and the gear box 10 of the hypoid reduction device 1 has a mounting surface F1 of the driven device. , F2 are formed, and four mounting bolt holes 27a to 27d are provided. The mounting bolt holes 27a to 27d are disposed in the vicinity of the four corners of the mounting surface F1 (F2) of the gear box 10 and pass through the gear box 10 (in parallel with the output shaft 14). The fitting dimension of the mounting surface F1 (F2) is designed to be the same as the fitting dimension with the driven device in the two-stage or three-stage hypoid reducer prepared as a series of hypoid reducers. More specifically, the mounting surface F1 (F2) of the (four-stage) hypoid reduction gear 1 and the mounting surface of the two-stage or three-stage hypoid reduction gear are both substantially rectangular in shape. Both the positions of the mounting bolt holes on the surface are provided at the same positions near the four corners of the rectangle.

  Next, a four-stage hypoid reduction mechanism housed in the hypoid reduction device 1 according to the embodiment of the present invention will be described. This reduction mechanism has a four-stage gear set.

  A motor shaft 31 of the motor 3 serves as an input shaft of the hypoid reduction gear 1, and a hypoid pinion 32 is formed at the tip. The hypoid pinion 32 is offset by a distance e1 with respect to the first intermediate shaft 11 in a state where the motor 3 and the hypoid reduction gear 1 are coupled, and is mounted on the first intermediate shaft 11 inside the gear box 10. It meshes with the hypoid gear 16. The hypoid gear set 4 that is the first gear set is configured by the hypoid pinion 32 and the hypoid gear 16.

  Further, the first intermediate shaft 11 and the second intermediate shaft 12 are provided with spur gears 17 and 18 that mesh with each other and constitute a first parallel shaft gear set 5 as a second gear set inside the gear box 10. Yes. Similarly, the second intermediate shaft 12 and the third intermediate shaft 13 have spur gears 19 and 20 that mesh with each other and constitute a second parallel shaft gear set 6 as a third-stage gear set, and also output with the third intermediate shaft 13. The shaft 14 is provided with spur gears 21 and 22 that mesh with each other and constitute a third parallel shaft gear set 7 as a final gear set.

  Rotational power input from the motor shaft 31 is generated from the hypoid gear set 4 including the hypoid pinion 32 and the hypoid gear 16 → the first parallel shaft gear set 5 including the spur gears 17 and 18 → the second parallel shaft gear set 6 including the spur gears 19 and 20 → the spur gear. The third parallel shaft gear set 7, 21, 22 is decelerated by four steps along the path of the output shaft 14 and finally transmitted to the output shaft 14.

  As shown in FIG. 3, the third parallel shaft gear set (final gear set) 7 of the hypoid reduction gear 1 ((A) in FIG. 3) and the spur gear (pinion) constituting the third parallel shaft gear set 7 21 and the third intermediate shaft (rotary shaft) 13 and the output shaft (rotary shaft) 14 provided with the spur gear 22 are the final gear set 107 of the two-stage hypoid reduction gear 101 shown in FIG. The spur gear (pinion) 121 and the spur gear 122 constituting the final gear set 107 are shared by an intermediate shaft (rotary shaft) 113 and an output shaft (rotary shaft) 114, respectively.

  Further, the hypoid gear set 4 of the hypoid reduction gear 1, the first parallel shaft gear set (second gear set) 5 connected to the hypoid gear set 4, the spur gear 16 of the hypoid gear set 4, and the spur gear (pinion) of the first parallel shaft gear set 5. The first intermediate shaft 11 (rotating shaft) provided with 17 also has a hypoid gear set 204 of the three-stage hypoid reduction device 201 shown in FIG. A first intermediate shaft 211 (rotation) provided with a first parallel shaft gear set (second gear set) 205 coupled to the hypoid gear set 204, a spur gear 216 of the hypoid gear set 204, and a spur gear (pinion) 217 of the first parallel shaft gear set 205. (Shaft) and each. Here, “frame number” defines the magnitude of the handling torque of these reduction gears, and “frame number is one size smaller” means, for example, that the shaft diameter of the output shaft is one size smaller, etc. To do. Generally, a plurality of reduction gears having a reduction ratio are prepared with the same frame number.

  Further, the spur gears 19 and 20 constituting the second intermediate shaft 12 and the second parallel shaft gear set 6 of the hypoid reduction device 1 and the second intermediate shaft 212 and the second parallel shaft gear set 206 of the three-stage hypoid reduction device 201 are constituted. The spur gears 219 and 220 are also shared.

  FIG. 4 shows the gear box 10 of the hypoid reduction gear 1, the hypoid gear set (first gear set) 4, the middle gear set 305 including the spur gear 317 and the spur gear 20, and the third parallel shaft gear set (final gear set) 7. The hypoid reduction gear 301 which respectively connected and accommodated is shown. In the hypoid reduction device 301, the spur gear 17 of the first parallel shaft gear set (second gear set) 5 of the hypoid reduction device 1 described above meshes with the gear 20 of the second parallel shaft gear set 6 (third gear set). The spur gear 317 is changed to a possible one.

  This hypoid reduction gear 301 can perform three-stage deceleration by the path of hypoid gear set 4 (32, 16) → middle gear set 305 (317,20) → third parallel shaft gear set 7 (21, 22) → output shaft 14. ing.

  According to the hypoid reduction device 1 according to the embodiment of the present invention, a four-stage type having the four-stage gear sets 4, 5, 6, 7 in the single gear box 10 and the first-stage gear set being the hypoid gear set 4. Since the hypoid reduction mechanism can be accommodated, a high reduction ratio exceeding about 1/240 can be obtained, and noise reduction of the entire hypoid reduction device 1 can be easily realized. That is, when the hypoid reduction gear 1 is combined with the motor 3, the first gear set is driven at the highest speed among the gear sets, so noise generated during driving tends to be a problem. By adopting the hypoid gear set 4 capable of noise reduction, noise reduction can be realized. Further, as compared with the conventional hypoid reduction gear that achieves a high reduction ratio, the cost reduction and productivity can be improved and the hypoid reduction gear 1 can be downsized compared to the case where a parallel shaft gear set is added. It is possible and easy to install.

  Further, since the second and third intermediate shafts 12 and 13 are arranged so as to be positioned on the plane P1 orthogonal to the axis L1 of the motor shaft (pinion shaft) 31, the hypoid reduction gear 1 can be made compact ( In particular, the motor shaft 31 can be made compact in the direction of the axis L1. The axis L1 of the motor shaft 31 and the plane P1 are not limited to being completely orthogonal, and the intersection angle of the axis L1 of the motor shaft 31 with respect to the plane P1 is in the range of 90 ° ± 10%. I just need it.

  In addition, since the output shaft 14 is disposed so as to be orthogonal to the axis of the motor shaft (pinion shaft) 31, further downsizing (particularly, the motor shaft 31 in the radial direction) can be achieved.

  The mating dimension of the mounting surface F1 (F2) of the hypoid reduction gear 1 is designed to be the same as the mating dimension with the driven device in the two-stage or three-stage hypoid reduction gear prepared as a series of hypoid reduction gears. The hypoid reduction device 1 can be easily applied to the driven device, and can cope with a wide range of reduction ratios required by the user.

  The third parallel shaft gear set (final stage gear set) 7, the spur gear (pinion) 21 constituting the third parallel shaft gear set 7, the third intermediate shaft (rotary shaft) 13 provided with the spur gear 22, and the output shaft ( (Rotary shaft) 14 is used in common with the corresponding member of the two-stage hypoid reduction gear 101, and the hypoid gear set 4, the first parallel shaft gear set 5 connected to the hypoid gear set 4, and the spur gear of the hypoid gear set 4 are used. 16 and the first intermediate shaft 11 (rotary shaft) provided with the spur gear (pinion) 17 of the first parallel shaft gear set 5 is also applicable to the three-stage hypoid reduction device 201 whose frame number is one size smaller than the hypoid reduction device 1. It is shared with members.

  Therefore, most of the members (rotating shafts, gears, bearings, etc.) constituting the hypoid reduction gear 1 can be used, and the cost of the hypoid reduction gear 1 can be reduced and the development period can be shortened. If a hypoid reducer series including a hypoid reducer with these members in common is provided as a component, the members constituting the reducer can be shared in the series, and the hypoid reducer Cost reduction, shortening of development period, etc. are possible.

  If the hypoid reduction gear 1 is a hypoid reduction gear 301 comprising a hypoid gear set 4 (32, 16), a middle gear set 305 (317, 20) and a third parallel shaft gear set 7 (21, 22), a three-stage reduction is performed. Therefore, it is possible to select a three-stage or four-stage reduction according to the use application of the user, and since the members such as the gear box 10 can be shared, the change to the three-stage or four-stage reduction is possible. Easy.

  In the above embodiment, the hypoid reduction gear 1 is configured by the hypoid gear set 4 and the three-stage parallel shaft gear sets 5, 6, and 7. However, the present invention is not limited to this, and has a four-stage gear set. In addition, any four-stage hypoid reduction gear may be used in which the first gear set is a hypoid gear set. Further, the arrangement of the four-stage gear sets 4, 5, 6, and 7 is not limited to that shown in the drawing, and for example, a hypoid having four-stage gear sets 404, 405, 406, and 407 as shown in FIG. The reduction device 401 may be used.

  The hypoid reducer 401 is similar to the hypoid reducer 1 in that it has a four-stage gear set including a hypoid gear set 404 and first to third parallel shaft gear sets 405, 406, 407. The arrangement of the first to third intermediate shafts 411, 412, 413 and the output shaft 414 is different. The four-stage gear sets 404, 405, 406, and 407 are accommodated in a gear box 410 having mounting holes 427a to 427d arranged at positions corresponding to the apexes of a square. Thus, by arranging the mounting holes 427a to 427d of the gear box 410 at positions corresponding to the apexes of the square, it is possible to arrange the hypoid reduction gear 401 in the horizontal direction or the vertical direction with respect to the counterpart machine (driven device). Thus, installation according to the mounting situation becomes possible.

  As with the hypoid reducer 1, the hypoid reducer 401 also has a common member with the two- or three-stage hypoid reducer, thereby reducing the cost of the device, shortening the delivery time, etc. Is possible.

  In the example of the above embodiment, the third parallel shaft gear set 7 and the third intermediate shaft 13 and the output shaft 14 provided with the spur gears 21 and 22 constituting the third parallel shaft gear set 7 are two-stage type. Although an example in which the corresponding members of the hypoid reduction gear 101 are used in common is shown, the three-stage hypoid reduction gear may be shared, or the (four-stage) hypoid reduction gear 1 and 2 or 3 may be used. It is only necessary to have a gear set or rotating shaft that is at least partially shared with the stepped hypoid reduction gear.

Sectional drawing seen from the output-shaft front of the hypoid geared motor which integrated the hypoid reduction gear and motor which concerns on the example of embodiment of this invention FIG. 1 is a cross-sectional plan view showing a gear train of the hypoid reduction gear device in FIG. A diagram showing a four-stage hypoid reducer, a three-stage hypoid reducer whose frame number is one size smaller, and a two-stage hypoid reducer, respectively. The figure which showed the hypoid geared motor which integrated the hypoid reduction gear device and motor which concerns on the example of embodiment of this invention which enabled 3 step | paragraph deceleration. The figure which showed the hypoid geared motor which integrated the hypoid reduction gear device and motor which concern on the other example of embodiment of this invention. A diagram showing a conventional hypoid reducer

Explanation of symbols

GM ... Hypoid geared motor 1, 101, 201, 301, 401 ... Hypoid reduction gear 3, 503 ... Motor 4 ... Hypoid gear set 5, 6, 7 ... Parallel shaft gear set 10 ... Gearbox 11, 12, 13 ... Intermediate shaft 14 ... Output shaft 16 ... Hypoid gear 17-22 ... Spur gear 27a-27d ... Mounting bolt hole 31 ... Motor shaft (input shaft)
32 ... Hypoid pinion 33 ... Motor casing 37, 38, 40-47 ... Bearing 501 ... Three-stage hypoid reduction device 502 ... Parallel shaft gear 505 ... Gear box

Claims (8)

In a hypoid reduction device comprising at least a hypoid gear set having a hypoid pinion and a hypoid gear meshing with the hypoid pinion,
A four-stage hypoid reduction gear having a four-stage gear set in a single gear box and having a four-stage hypoid reduction mechanism in which the first-stage gear set is the hypoid gear set. A hypoid reducer characterized by In claim 1,
The four-stage hypoid reduction gear includes a first intermediate shaft provided with the hypoid gear, a second intermediate shaft connected to the first intermediate shaft via a second-stage gear set, and the second intermediate shaft. An intermediate shaft and a third intermediate shaft connected via a third gear set,
The hypoid reducer characterized in that the second and third intermediate shafts are arranged on the same plane orthogonal to the axis of the pinion shaft on which the hypoid pinion is formed. In either claim 1 or 2,
The hypoid reducer characterized in that the output shaft of the four-stage hypoid reducer is arranged so as to be orthogonal to the axis of the pinion shaft on which the hypoid pinion is formed. In a hypoid reduction device comprising at least a hypoid gear set having a hypoid pinion and a hypoid gear meshing with the hypoid pinion,
In a single gear box that has a four-stage gear set and can accommodate a four-stage hypoid reduction mechanism in which the first-stage gear set is the hypoid gear set, the first-stage gear set and the four-stage hypoid reduction gear 2 A middle gear set configured to be able to mesh the pinion of the stage gear set and the gear of the third stage gear set and the final stage gear set of the four-stage hypoid reduction gear are respectively connected and accommodated, and the first stage gear set, A hypoid reduction device characterized in that a three-stage reduction is possible by a middle gear set and the final gear set. In a series of hypoid reduction gears comprising at least a hypoid gear set having a hypoid pinion and a hypoid gear meshing with the hypoid pinion,
The series is a hypoid reducer that is a component of the series.
A four-stage hypoid reducer according to any one of claims 1 to 3,
A hypoid gear set and a two- or three-stage hypoid reduction gear having one or two parallel shaft gear sets connected to the hypoid gear set, and
A series of hypoid reducers characterized in that the size of engagement with the driven device in the four-stage hypoid reducer is the same as the size of engagement with the driven device in the two- or three-stage hypoid reducer. In a series of hypoid reduction gears comprising at least a hypoid gear set having a hypoid pinion and a hypoid gear meshing with the hypoid pinion,
The series is a hypoid reducer that is a component of the series.
A four-stage hypoid reducer according to any one of claims 1 to 3,
A hypoid gear set and a two- or three-stage hypoid reduction gear having one or two parallel shaft gear sets connected to the hypoid gear set, and
A series of hypoid reduction gears, characterized in that a gear set or a rotating shaft is made common to at least a part of the hypoid reduction gears constituting the series. In claim 6,
A series of hypoid reducers characterized in that the final gear set of each of the hypoid reducers constituting the series and the rotation shaft provided with the pinion or gear constituting the final gear set are shared. In a series of hypoid reduction gears comprising at least a hypoid gear set having a hypoid pinion and a hypoid gear meshing with the hypoid pinion,
The series is a hypoid reducer that is a component of the series.
A four-stage hypoid reducer according to any one of claims 1 to 3,
A three-stage hypoid reducer having a frame number one size smaller than the four-stage hypoid reducer when the magnitude of the handling torque of the reducer is defined in the form of a frame number; and
A hypoid gear set of a four-stage hypoid reduction gear constituting the series, a second gear set coupled to the hypoid gear set, a rotary shaft provided with a gear of the hypoid gear set and a pinion of the second gear set, and the series The hypoid gear set of the three-stage type hypoid reduction gear that constitutes the second stage gear set, the second stage gear set connected to the hypoid gear set, the gear of the hypoid gear set, and the rotation shaft provided with the pinion of the second stage gear set are respectively shared A series of hypoid reducers characterized by this.

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