KR20030035999A - Series of geared motor - Google Patents

Abstract

PURPOSE: A series of a geared motor is provided to meet user's request for a change of a gearbox or a motor more reasonably and delicately. CONSTITUTION: A series of a geared motor has a gearbox(1) having, a motor(M) with a motor frame and a motor shaft(24), and an output shaft. A gear set is installed in the gearbox. The gear set comprises a pinion integrally rotating together with the motor shaft, and a gear engaging with the pinion. By providing a motor cover(22) on an end of the motor frame of a hypoid geared motor(GM) on the gearbox side independently from the gearbox, the gearbox can be separated from the motor while a hypoid pinion(13) is left on the side of the motor shaft. By a conception that a common pinion can be applied to the motor shafts of the different motors, a plurality of types of motors can be connected with the gearbox having the identical frame number and identical reduction ratios.

Description

Series of geared motors

The present invention relates to a series of geared motors, for example, used in drive systems such as conveyors in logistics systems, in which a gear box incorporating a gear set is incorporated into a motor.

As shown in Japanese Patent No. 2866247, a sub-series in which the combined dimensions or permissible torques for installing the gearbox on the counterpart machine are the same (frame number is the same) and a plurality of reduction ratios are prepared from the reduction ratio to the high reduction ratio. A series of geared motors is known. That is, in the case of this series, a plurality of frame numbers of various sizes are prepared corresponding to the strength (allowable torque) (of course, the gears inside the gearbox also become large corresponding to the frame number), and a plurality of frame numbers are provided for each frame number. The reduction ratio of is prepared. In short, the sub-series corresponding to the number of frame numbers are collected, and a larger series is formed as a whole.

In addition, in the concept which prescribes the magnitude of a frame, for example,

플랜지 Flange dimensions defining the mounting dimensions of the gearbox to the counterpart machine.

직경 diameter and length of output shaft

삽입 Size of the guide part when guiding the mating machine

위치 Position or size of bolt mounting holes used when actually engaging the mating machine.

위치 Position and size of copper rust pin

Etc. At the same frame number, at least one of them is common.

Conventionally, this type of geared motor is provided with a plurality of geared motors having different reduction ratios for each frame number, that is, for each size (permissible torque) of the gearbox, as described above. In addition, in terms of reduction ratio, it was thought that an arbitrary geared motor could be provided as needed.

However, the inventors carefully examined the series of conventional geared motors, and it turned out that the conventional series is not necessarily the same series that can technically flexibly respond to any situation (necessity).

That is, when the geared motor in the conventional series only sees the gear set, there is naturally only one type of gear set of the same reduction ratio produced by the motor of the same transmission capacity (output) in the system of the series.

On the other hand, the gearbox (frame) does not change the motor capacity and the reduction ratio (transfer torque) of the geared motors so far (or in the future) due to changes in conveyances (impact loads, loads) of the conveyor or circumstances such as arrangement. The number may be small, and the request may be made to increase the gearbox (frame number) without increasing the motor capacity and reduction ratio (increase the strength of the gearbox).

Such a request cannot be responded to in the conventional series described above. In short, in the conventional series, since replacing the gearbox (changing the frame number) is replacing the gear, there is only one type of gear set with the same reduction ratio for one motor as in the prior art. In this case, the motors are replaced, and eventually, even though the motors do not need to be replaced, they have to be replaced.

Or, for example, when a lot of geared motors related to the existing series are already installed in the field, and the situation is such that the motors are utilized as they are, the gearboxes have to be designed and coped separately as special orders. However, in that case, a new gearbox must be prepared and cost increases.

This invention is made | formed based on this knowledge, and an object of this invention is especially to provide the series of geared motors which can respond more rationally and flexibly to a change request of a gearbox or a motor.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the sample of the hypoid geared motor among the series of embodiment of this invention.

2 shows a sample of a more advanced system of the series.

3 is an enlarged side view of a hypoid geared motor represented by one sample.

4 is a plan sectional view of the recessed part.

5 is a matrix showing the contents of the series of the present invention.

6 is a matrix when the series of the invention is taken from different angles.

7 is a matrix showing the contents of a conventional series.

8 is a matrix in which the conventional series is arranged in another form.

Explanation of symbols on the main parts of the drawings

G, G1, G2, G3: Hypoid Reducer

M, M1, M2, M3: motor

GM, GM1, GM2, GM3: Hypoid Geared Motor

e, e1, e2, e3: offset amount

1, 1A, 1B, 1C: Gearbox

11: input shaft

12, 12A, 12B, 12C: Output Shaft

13, 13A, 13B, 13C: hypoid pinion

14, 14A, 14B, 14C: Hypoid Gear

15, 15A, 15B, 15C: Hypoid Gear Set

20: motor casing

21, 21A, 21B, 21C: Motor Frame

22, 22A, 22B, 22C: front motor cover

24, 24A, 24B, 24C: motor shaft

25: Bearing

27: oil seal

The present invention includes a motor having a motor frame and a motor shaft, a gear box having an output shaft, and further including a pinion which is integrally rotated with the motor shaft, and a shaft offset with the motor shaft by a predetermined offset amount. In the series of geared motors equipped with a gear set consisting of gears which are engaged with the pinion and engaged with the axle, the motor cover is provided separately from the gear box at the gear box side end of the motor frame. With the motor cover installed on the motor frame and the pinion left on the motor side, the motor and the gearbox can be separated, and a plurality of types of pinions are prepared for motors of the same capacity. , Gears of the gearbox having the same reduction ratio but different coupling dimensions and allowable torques for installation on the counterpart machine At the same time as the series of boxes, the gears of one gearbox constituting the series can engage only one pinion selected from the plurality of pinions, respectively, and in the plurality of types of pinions for the motor of the same capacity. The above problem is solved by selecting one pinion and selecting a gearbox in the series having a gear that meshes with the one pinion, and making this motor and the gearbox connectable.

In addition, the present invention includes a motor having a motor frame and a motor shaft, a gear box having an output shaft, and further including a pinion which is integrally rotated with the motor shaft, and a predetermined offset amount of the motor shaft. In a geared motor having a gear set made of a gear that is engaged with the pinion and engaged with an axle shaft, the motor cover is provided separately from the gear box at the end of the gear box side of the motor frame. With the motor cover attached to the motor frame, and with the pinion left on the motor side, the motor and the gearbox can be separated, and the motor includes a transmission capacity, a rotor and a stator. The diameter of the cross section is different, but the pinion is composed of the same motor group, and with respect to the gearbox, the pinion of the motor selected from the motor group Tteon will be one by enabling connection, to achieve the above object.

In addition, the present invention includes a motor having a motor frame and a motor shaft, a gear box having an output shaft, and further including a pinion which is integrally rotated with the motor shaft, and a predetermined offset amount of the motor shaft. In a series of geared motors with gear sets comprising gears engaged with the pinion and engaged with the shaft center, the motor cover is provided separately from the gear box at the end of the gear box side of the motor frame. At the same time, with the motor cover mounted on the motor frame, and with the pinion left on the motor side, the motor and the gearbox can be detached, and are representative of the combined dimensions for installation on the counterpart machine. When the magnitude of the allowable torque of the gear box to be specified is defined in the form of the difference of the frame number, the gear box A motor group comprising the same gear box group in which a plurality of reduction ratios from a reduction ratio to a high reduction ratio are prepared, wherein the motor has a different transmission capacity, a diameter of the cross section including the rotor and the stator, but the pinion is the same. The above object is similarly achieved by making it possible to connect any of the motors selected from the motor group to the gearbox having the same frame number and the same reduction ratio.

In the present invention, finding the absurdity in the conventional series of geared motors has great significance in the window itself.

The unreasonable points of these conventional series will be described later.

In the present invention, focusing on this irrational aspect, first of all, in the conventional series of geared motors of this type, since the structure is not detachable from the gearbox while leaving a pinion on the motor side, in order to improve this point, At the gearbox side end of the frame, the motor cover is installed separately from the gearbox, and the motor and gearbox are separated while the motor cover is mounted on the motor frame and the pinion is left on the motor side. Made it possible.

In addition, a plurality of pinions are prepared for motors of the same capacity, and gears that form the same reduction ratio when engaged with each pinion are incorporated, and a plurality of gear boxes having different frame numbers from each other are prepared and seriesd.

As a result, gearboxes of various frame numbers (sizes) can be procured as standard products in a situation where the reduction ratio and the motor capacity are the same, and can flexibly respond to a wide range of needs of users regarding the case of gearboxes. It becomes possible.

In addition, the idea that the pinions are the same even if the motor diameters are different can be used to change only the transmission torque without changing the frame number and the reduction ratio, and as a result, the customer simply replaces the motor with the pinion with a desired capacity. Flexibility to respond to the wide range of needs

<Example>

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing.

1 shows a sample of a hypoid geared motor series of an embodiment taken out of a sample in which a motor of the same capacity is connected to another gearbox. In addition, Figure 2 shows a sample taken out of the other motor connected to the same gearbox of the series. 3 is an enlarged side view of a hypoid geared motor as one sample, and FIG. 4 is a plan sectional view of a main portion thereof.

First, the specific structure of the hypoid geared motor GM is demonstrated using FIG. 3, FIG.

The hypoid geared motor GM is a combination of the hypoid type single-stage reducer G and the motor M. This reducer G has a gear box 1 as an outer shell, and the motor M has a motor casing 2 as an outer shell. The motor casing 2 consists of a cylindrical motor frame 21 constituting the outer shell body, a front motor cover 22 and a rear motor cover 23. In all, the motor cover 22 is disposed at the end of the reducer G side of the motor frame 21.

The reducer G and the motor M are all fitted with the motor cover 22 of the motor casing 2 inserted into the side opening of the gear box 1, so that the motor cover 22 and the gear box ( By combining 1) with the bolt 3, they are firmly integrated with each other.

The motor M rotatably supports the motor shaft 24 with the rear bearing 26 fitted with the full bearing 25 and the rear motor cover 23 fitted with the motor cover 22. It is configured to give rotational power to the shaft (24). Two stage oil seals 27 are provided on the front side of all the bearings 25 fitted with the motor cover 22, so that lubricating oil does not enter the motor M from the reducer G side. It is supposed to be.

The reduction gear G is an output shaft 12 which consists of the input shaft 11 integrated with the motor shaft 24, and the hollow shaft arrange | positioned orthogonally orthogonally by this input shaft 11 by the predetermined offset amount e. ), A hypoid gear set 15 composed of a hypoid pinion 13 directly formed on the input shaft 11 and a hypoid gear 14 mounted on the output shaft 12, and an output shaft 12. Two bearings 16, 17 rotatably supporting at positions on both sides of the hypoid gear 14, and the gearbox 1 fitting the two bearings 16, 17 together; Equipped.

In this embodiment, the hypoid pinion 13 is formed directly on the input shaft 11, that is, the motor shaft 24, so that the rigidity can be enhanced, the mounting precision can be improved, and the number of mounting steps can be reduced. In the present invention, however, the integration of both the 13 and 24 is not necessarily required, but may be performed separately. On the contrary, when focusing on preparing the plurality of hypoid pinion 13 for the motor M of the same capacity, the hypoid pinion 13 is different from the motor shaft 24, so that the common use of components Excellent in terms of promotion.

In this configuration, since all the motor covers 22 of the motor M are constituted separately from the gearbox 1 of the reducer G, the hypoid pinion 13 is left on the motor shaft 24 side. In, the motor M and the gearbox 1 are made detachable.

Next, a series of hypoid geared motors constituted by a combination of the reduction gear G and the motor M having such a structure will be described. In addition, about the code | symbol of each element, the individual code | symbol (the code which added A, B, and C) is used when they need to distinguish mutually, and the code | symbol shown in FIG. 3, FIG. 4 is not necessary in particular. (Sign without adding A, B, C) is used. In addition, about the element which is not shown in description, what needs to be distinguished and represented is shown with the code which added A, B, and C in the figure.

In this series, the concept of the allowable torque of the gearbox represented by the combined dimensions for mounting on the counterpart machine is defined in the form of the difference between the "frame numbers". A plurality of reduction ratios are prepared.

Fig. 1 shows a sample of the sub-series related to the present invention, and three kinds of hypoid geared motors GM12 and GM22 obtained by combining reduction gears G1 to G3 of different frame numbers with a motor M2 of the same capacity. , GM32).

In this sub-series, hypoid pinions 13 (13A, 13B, 13C) on the motor shaft 24 (24A, 24B, 24C) side and hypoid gears in the gearbox 1 (1A, 1B, 1C). (14) Gearboxes 1 (1A, 1B having different frame numbers from each other with built-in hypoid gear sets 15 (15A, 15B, 15C) which form the same reduction ratio when the 14 (14A, 14B, 14C) are engaged. And 1C, it is possible to connect a motor M (M2) having the same transfer capacity.

Therefore, all the motor covers 22 (22A, 22B, 22C) of the motor M in this sub-series have hypoid gears due to different coupling dimensions on the gearbox 1 (1A, 1B, 1C) side. A plurality of hypoid pinions 13 (13A, 13B, 13C) to (14) (14A, 14B, 14C), that is, three in this example, are prepared, and each offset amount e (e1, e2) , e3) are different from each other, and the combined dimensions on the motor M and M2 sides are common. That is, in the series, each of the motor shafts 24 (24A, 24B, 24C) of each motor M (M2) has a hypoid pinion 13 (13A, 13B, 13C) formed at its tip. It differs in (24) (24A, 24B, 24C).

In this way, by including a sub-series in the series of geared motors that have a wide range of choices for the frame number (gear box) of the same motor capacity and reduction ratio, it is more thorough and reasonable for various conceivable uses and situations. It is possible to provide a hypoid geared motor, which can cope with, and eliminates unnecessary costs at a low cost.

Next, the content of the geared motor series of embodiment of this invention is demonstrated more concretely, compared with the conventional geared motor series.

First, the irrationality of the series of hypoid geared motors proposed in Japanese Patent No. 2866247, which is a conventional series, will be described.

Fig. 7 shows the relationship between the frame number and the reduction ratio and the transmission capacity of the motor mounted corresponding to the frame number and the reduction ratio, which can be realized in the series of hypoid geared motors proposed in the above-mentioned patent No. 2866247. .

In Fig. 7, the horizontal axes A, B,... Indicates the frame number, and the allowable torque increases in this order. On the other hand, 5, 7,... Represents the "denominator value" of the reduction ratio. That is, "5" is reduction ratio "1/5" and "7" is reduction ratio "1/7". In this specification, such "denominator value" is used later for the reduction ratio. 0.4, 0.75,... Described in each cell in this matrix. Numerals and the like represent transmission capacity of the motor connected when the frame number and the reduction ratio are determined. The unit is kw.

Now, attention is paid to the column of the frame number C, for example. When the reduction ratio is 5 in the frame number C, motors with a transmission capacity of 1.5 kw are combined. When the reduction ratio is 7, a motor with a transmission capacity of 0.75 kw is combined.

This corresponds to the reduction gear ratio hypoid gear set for large-capacity motors and the high reduction gear hypoid gear set for small-capacity motors, so that the gearbox and the motor of the entire series can be shared as much as possible. It is based on the building guidelines of this series and is basically reasonable.

In this series, for example, when a conveyor is driven using a hypoid geared motor having a reduction ratio 7, transmission capacity of 0.75 in frame number C, a request is made to reduce the size of the gearbox slightly due to circumstances. It is said to have been. In the factory, there are various conveyors and the like, and the existing geared motors are often hindered by batch replacement or new installation of the conveyors.

In such a case, in the conventional series, it corresponds to selecting the hypoid geared motor of the frame number B which is one rank lower than the frame number C. Conversely, since the frame number can be flexibly responded to such a situation by switching the frame number from C to B, it is considered that the conventional series has no problem in terms of construction.

However, when switching from the frame number C to the frame number B, inevitably the motor capacity to be combined also changes, so that the driving torque also becomes small. In reality, however, as described above, there are many cases where the speed (deceleration ratio) and the drive torque (motor capacity) do not want to be changed in a series of flows with other conveyors.

Here, in order to make the advantages of the present invention easier to understand, the conventional series and the series related to the present invention are compared by a matrix in which the transmission capacity of the motor is taken on the horizontal axis and the reduction ratio on the vertical axis.

8 summarizes the conventional series into this matrix. In order to keep the reduction ratio at 7, and to keep the transmission capacity of the motor at 0.75 kw, the frame number cannot move from C. It can be seen that the motor capacity also has to be 0.4 kw below one rank in order to achieve a size equivalent to the frame number (B). However, as the motor capacity is made smaller (since the reduction ratio is the same here), the driving torque is surely reduced.

With respect to such an undesirable state, FIG. 5 relates to the series of the present invention, and shows that a plurality of frame numbers can cope with a motor having the same transmission capacity of 0.75 kw at the same reduction ratio. In addition, in FIG. 5, what is shown by the parenthesis is prepared by the conventional series. As is apparent from Fig. 5, for example, a gearbox having the same reduction ratio 7 for a motor having a transmission capacity of 0.75 kw is prepared separately from the frame number C and the frame number D in addition to the conventional frame number C. I can see that there is. The same configuration is formed for motors of different transmission capacities.

With this configuration, for example, when a deceleration output of gear ratio 7 is obtained using a motor of 0.75 kw, both gearboxes of frame numbers B and D can be used in addition to the gearbox of frame number C, but B, which is a small frame number, is used. By employing the frame number of N, the geared motor can be made compact.

On the contrary, the same driving force (same motor capacity) is 0.75 kw, the same reduction ratio (same conveyor speed) is 7, and the frame number is further enlarged to adopt D, thereby providing a "structural margin" to the hypoid gear set. It is also possible to cope with a situation such as a situation or a place where inspection or replacement is difficult, such as when durability is required.

In general, motors are often procured or exchanged immediately, but since hypoid gear sets may not be easily procured, it is not a practical problem to force such a response.

Furthermore, since the hypoid pinion 13 remains on the motor shaft 24 side when the motor M and the gear box 1 are separated, the hypoid may be removed even if the motor M and the gear box 1 are separated. Hypothesis 13 can prevent the pinion 13 from losing its support and being separated from either the motor M or the gearbox 1, and also when the pinion 13 is separated from the motor M in order to prevent it from happening. It is not necessary to separately install a bearing or the like for supporting the id pinion 13 in the gearbox, and compactness can be maintained.

In addition, the present invention does not necessarily need to provide a plurality of frame numbers for all motors or all reduction ratios, and for example, it is possible to select a plurality of frame numbers related to the present invention only for a specific reduction ratio of a motor in demand. It is good just to be.

Moreover, in the said embodiment, although the geared motor using the 1st stage hypoid reducer was illustrated, this invention is applied also to the series of the geared motor using the multistage hypoid reducer which connected the parallel shaft gear set to the hypoid gear set. In addition, the present invention can also be applied to a parallel shaft gear set, for example, in which a helical pinion is provided at the tip of the motor even if the hypoid gear set is not used.

2 shows a more advanced system of the present invention. In this series, the gearbox 1 which has the same frame number and forms the same reduction ratio when the hypoid pinion 13 on the motor shaft 24 and the hypoid gear 14 in the gear box 1 mesh with each other. ), A sub-series is provided in which a plurality of motors M can be connected.

FIG. 1B and FIG. 2B correspond to each other. FIG. 2 shows a sample in the sub-series, and shows that FIG. 2A and FIG. 2C can be further selected with respect to FIG. 1B and FIG. 2B. That is, three types of hypoid geared motors GM21, GM22 and GM23 obtained by combining motors M1, M2 and M3 having different transmission capacities with respect to the same hypoid reducer G2 are shown.

In this sub-series, the frame number of the geared motor is the same, and the hypoid pinion 13 on the motor shaft 24 (24A, 24B, 24C) side and the hypoid gear 14 in the gearbox 1 are engaged with each other. With respect to the gearbox 1 which forms the same reduction ratio at the time, the motor M (M1, M2, M3) from which a several kind of transmission capacitance differs is connectable.

Therefore, among the sub-series, all the motor covers 22 (22A, 22B, 22C) in the motors M (M1, M2, M3) have a common coupling dimension on the gearbox 1 side. The offset amount e of the hypoid pinion 13 relative to the id gear 14 becomes constant, and the combined dimensions on the motor M (M1, M2, M3) side are the motors M (M1, M2, M3). ) Depends on the delivery capacity.

On the other hand, the motor shaft 24 (24A, 24B, 24C) is prepared in plural kinds according to the transmission capacity of the motor M (M1, M2, M3), and the hypoid pinion 13 formed in the front-end | tip. ) Are common to the motor shafts 24 (24A, 24B, 24C). In addition, although the motor shaft 24 (24A, 24B, 24C) is provided in multiple types, all the inner peripheral shapes (inner diameter) of the motor cover 22 (22A, 22B, 22C) are the same, and a motor shaft ( The bearing 25 and the oil seal 27 which support 24 (24A, 24B, 24C) are common.

Thereby, for example, even if the "frame number" and the "deceleration ratio" are the same, the combination of a little small or a little big motor is attained. It demonstrates concretely below.

Again, with reference to Fig. 7, which is a conventional series, attention is now given, for example, to the column of the frame number (C). Conventionally, when the reduction ratio is 5 in the frame number C, motors with a transmission capacity of 1.5 kw are combined. When the reduction ratio is 7, a motor with a transmission capacity of 0.75 kw is combined.

Here, for example, when driving a conveyor using a hypoid geared motor with a reduction ratio 7, frame transmission capacity of 0.75 kw in the frame number C, there was a request to increase the driving torque of the conveyor slightly due to circumstances. .

In this case, in the conventional series (FIG. 7), this corresponds by selecting a hypoid geared motor of frame number D that is one rank above frame number C. FIG. In the frame number D, a motor of 1.5 kw is used at the same reduction ratio 7. Conversely, even in this case, since the frame number can be flexibly responded to such a situation by switching the frame number from C to D, the conventional series is considered to have no problem in terms of construction.

However, when switching from the frame number C to the frame number D, inevitably, the side of the gear box accommodating the hypoid gear set also grows with this. The larger the gearbox, the larger the coupling dimension with the mating machine. This means that a new hypoid geared motor cannot be mounted on a conveyor that has been driven so far (actually present).

In other words, when the driving force of the conveyor is to be slightly increased, the coupling with the conveyor main body side drive system must be changed with the change of the hypoid geared motor, and the large-scale reconstruction is inevitable. Also greatly increases.

On the other hand, in this case, when the motor capacity is changed to 1.5 kw in the frame number C, the deceleration ratio is changed to 5 this time (with no choice). However, as mentioned above, in the actual field, the speed of the conveyor is related to other conveyors and the like, and in reality, there is a demand for maintaining the same speed.

In contrast, in the series of Fig. 2, as shown in Figs. 6 (A) and 6 (B), for example, the frame number is C, that is, the coupling dimensions for the mating machine are kept the same. Therefore, a plurality of types of motor capacity can be selected. This situation is the same also in each reduction ratio of the frame number (D).

For example, in the frame number of C, when the reduction ratio is 7, the motor is freely selected from 0.4 kw, 0.75 kw, and 1.5 kw. In the case of the motor side, for example, a 0.4 kW motor can be used in any of the reduction ratios 7, 10 and 12.

As a result, a lower driving force is required for the same size (same counterpart machine), at the same reduction ratio (same conveyor speed), for a situation in which a motor with a higher driving force (high transmission capacity) is required, or for a lighter material to be conveyed. It is possible to reasonably cope with such a situation that a motor of (small power consumption) is required.

For example, in the matrix of Fig. 6, by employing a combination of positions in which the frame number is indicated by o, it can be combined in the sense that "the motor is slightly larger although the reduction ratio and the gearbox are the same size."

On the contrary, in the matrix of Fig. 6, by employing a combination of positions marked with? In the frame number, it can be combined in the sense that "the motor is slightly smaller although the reduction ratio and the gearbox are the same size." This combination is to select a larger frame number at the same motor capacity and the same reduction ratio, and to give the hypoid gear set a "structural margin", which requires more durability, such as a situation or a place where inspection or replacement is difficult. In such a case, it becomes possible to respond.

As described above, in general, motors can be procured or exchanged immediately, but since hypoid gear sets cannot be easily procured, it is not practical to resolve such a response.

In addition, since the code | symbols of A, B, and C are attached for convenience in each figure, each element in FIG. 1 and FIG. 2, especially the motor shaft 24 (24A, 24B, 24C) or all the motor covers 22 are shown. (22A, 22B, 22C) is not necessarily limited to the same structure having the same code.

As described above, according to the present invention, it is possible to select and connect gearboxes of different frame numbers while having the same motor capacity and the same combination of reduction ratios. It is possible to provide a wasteless geared motor at low cost.

According to the present invention, the idea that the pinions are the same even if the motor diameters are different can be changed only by changing the transmission torque without changing the frame number and the reduction ratio (by simply replacing the pinion-mounted motor with one of a desired capacity). .

Claims (6)

A motor having a motor frame and a motor shaft, a gear box having an output shaft, and further including a pinion which is integrally rotated with the motor shaft, and a shaft in which the shaft core is shifted from the motor shaft by a predetermined offset amount. In the series of the geared motor having a gear set comprising a gear mounted and engaged with the pinion, At the gearbox side end of the motor frame, the motor cover is separately installed from the gearbox and the motor cover is mounted on the motor frame, and the pinion is left on the motor side. Make the motor and gearbox detachable, In addition, a plurality of pinions are prepared for a motor of the same capacity, When the size of the allowable torque of the gear box represented by the combined dimensions for mounting on the counterpart machine is specified in the form of the difference between the frame numbers, the gear box has the same reduction ratio but different frame numbers. Series as a gearbox of the kind, The gears of each gearbox are each meshable with only one pinion selected from the plurality of types of pinions, One pinion is selected from the plurality of pinions for the motor of the same capacity, and one of the plurality of gearboxes having gears engaged with the one pinion is selected, and this motor and the selected gearbox are selected. A series of geared motors characterized in that the connection is possible. The method of claim 1, In addition to the motor of the same capacity, a separate motor having a transfer capacity and a diameter of the cross section including the rotor and the stator is different from the motor of the same capacity. And a series of geared motors, which can be selectively mounted. A motor having a motor frame and a motor shaft, a gear box having an output shaft, and further including a pinion which is integrally rotated with the motor shaft, and a shaft in which the shaft core is shifted from the motor shaft by a predetermined offset amount. In a geared motor having a gear set comprising a gear mounted and engaged with the pinion, At the gearbox side end of the motor frame, the motor cover is separately installed from the gearbox and the motor cover is mounted on the motor frame, and the pinion is left on the motor side. Make the motor and gearbox detachable, The motor has a delivery capacity and a diameter of the cross section including the rotor and the stator, but the pinion is composed of the same motor group, Geared motor, characterized in that for the gearbox, any of the motor selected from the motor group is connectable. A motor having a motor frame and a motor shaft, a gear box having an output shaft, further comprising a pinion which is integrally rotated with the motor shaft, and an axis in which the shaft center is set by a predetermined offset amount. In a series of geared motor having a gear set comprising a gear mounted to and engaged with the pinion, At the gearbox side end of the motor frame, the motor cover is separately installed from the gearbox and the motor cover is mounted on the motor frame, and the pinion is left on the motor side. Make the motor and gearbox detachable, In addition, when the magnitude of the allowable torque of the gearbox represented by the coupling dimension for mounting on the counterpart machine is defined in the form of the difference of the frame number, the gearbox has the same frame number, and the reduction speed ratio to the high reduction ratio Composed of a gearbox group in which a plurality of reduction ratios are prepared, The motor has a delivery capacity and a diameter of the cross section including the rotor and the stator, but the pinion is composed of the same motor group, And a gearbox having the same frame number and the same reduction ratio, wherein any of the motors selected from the motor group can be connected. The method of claim 4, wherein In the motor cover of each geared motor in the series, the gearbox side coupling dimension is common, and the offset amount of the pinion with respect to the gear is constant, and the motor side coupling dimension depends on the transfer capacity of the motor, A series of geared motors, wherein a plurality of the motor shafts of each geared motor in the series are prepared according to the transmission capacity of the motor, and the pinions formed or mounted at the tip thereof are common to each motor shaft. The method according to claim 3 or 4, A series of geared motors, wherein each geared motor of the series has the same inner diameter of a portion in which a bearing or an oil seal supporting the motor shaft in the motor cover is fitted.