JP2009290953A - Product group of geared motors and manufacturing method for geared motors - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a product group including geared motors different in the height of an output shaft at low cost. <P>SOLUTION: The product group of geared motors includes a common splice cover 136 and first and second legged speed reducer casings 102, 106. In the second speed reducer casing 106, all of the respective shaft support portions 142T, 144T of shafts are point-symmetrically turned upside down with respect to each other with a motor shaft 118 in the center as compared with the shaft support portions 142, 144 in the first speed reducer casing 102. Since the splice cover 136 and a speed reducing mechanism 110 are point-symmetrically turned upside down with the motor shaft 118 in the center, they can be coupled with both the first and second speed reducing casings 102, 106. The two different casings, or the first and second legged speed reducing casings 102, 106, can be coupled to a common motor 112, the splice cover 136 (136T), and the speed reducing mechanism 110 (110T). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a geared motor product group and a geared motor manufacturing method.

  For example, Patent Document 1 discloses a geared motor 16 with legs that integrally connects a motor 12 and a speed reducer 14 as shown in FIG.

  A pinion 20 is integrally formed on the motor shaft 18 of the motor 12. The pinion 20 meshes with the intermediate gear 22. An intermediate pinion 26 is directly formed on the intermediate shaft 24 in which the intermediate gear 22 is incorporated. The intermediate pinion 26 meshes with the output gear 28. As the output gear 28 rotates, the output shaft 30 rotates.

  A joint cover 36 is disposed between the casing 32 of the motor 12 and the casing 34 of the speed reducer 14. Cover side support portions 38 and 40 that can support one end 31 of the output shaft 30 and one end 23 of the intermediate shaft 24 are formed in the joint cover 36. On the other hand, the casing 34 of the speed reducer 14 is formed with body side support portions 42 and 44 that can support the other end 33 of the output shaft 30 and the other end 25 of the intermediate shaft 22. The casing 34 is provided with leg portions 46. The geared motor 16 is directly installed on the floor B1 or the like as a so-called “leg-integrated geared motor”.

  The geared motor 16 having such a configuration generally has a plurality of types of gear ratios for each frame number (a commonly used index corresponding to the transmission capacity), and constitutes one product group (series) as a whole. Manufacturers prepare several product groups, and customers select and purchase geared motors that match the optimal frame number (transmission capacity) and gear ratio from specific product groups. .

Japanese Patent Publication No. 8-32143

  From the customer's point of view, if there are many variations of geared motors that can be selected, the options for geared motors will increase accordingly. In the case of a floor-mounted geared motor with legs, for example, if a plurality of geared motors with different output shaft heights are prepared in advance on the manufacturer's side, consumers can purchase a geared motor that meets their own requirements. it can.

  However, at present, except for special cases, in a specific product group, when the frame number and the gear ratio are determined, there is usually only one type of geared motor that can be selected, and the height of the output shaft is also determined. For this reason, in order to respond to these various demands of consumers as much as possible, it is necessary to enrich product variations with different output shaft heights even with the same frame number and the same gear ratio.

  However, the height of the output shaft of a geared motor, which has been prepared as a standard only in the past, was set relatively high (as is clear in the previous example), for example, the height of the output shaft. However, in order to prepare a lower one as a variation, there was a problem that a simple method such as lowering the height of the leg portion could not be used, and eventually all the designs had to be redesigned.

  The present invention has been made under such circumstances, and in particular, provides a geared motor product group constructed so that the choice of the height of the output shaft of a floor-mounted geared motor can be increased at low cost. Is the issue.

  The present invention is a product group of geared motors including first and second geared motors in which a motor and a speed reducer are integrated, wherein the first geared motor includes a first motor including a first motor casing, and a first output. A first speed reduction mechanism including a shaft; a first joint cover having a first cover side shaft support portion coupled to the first motor casing and capable of supporting a part of each shaft of the first speed reduction mechanism; A first reduction gear casing having a first main body side shaft support portion capable of supporting another part of each shaft of the speed reduction mechanism and having a first leg portion integrally formed, wherein the second geared motor is A second motor common to the first motor and a second output shaft composed of a member common to the first output shaft, and composed of a member common to the first reduction mechanism and the second motor. The first deceleration around the motor shaft A second speed reduction mechanism incorporated in a manner in which the structure is reversed in a point-symmetric manner, and the first joint cover connected to the second motor casing and capable of supporting a part of each axis of the second speed reduction mechanism. And a second joint cover that is incorporated in a manner in which the first joint cover is symmetrically inverted about the motor shaft of the second motor, and each axis of the second reduction mechanism A second main body side shaft support portion formed at a position where the first main body side shaft support portion is inverted in a point-symmetric manner around the motor shaft of the second motor. And the height from the bottom surface of the second leg portion to the second output shaft is from the bottom surface of the first leg portion of the first geared motor to the first output shaft. A second reduction gear casing set to a height different from the height up to, The configuration in which is obtained by solving the above problems.

  In the present invention, by devising how to form the support portions of the respective axes of the second reduction gear casing, the first joint, the first joint cover and the speed reduction mechanism are turned upside down symmetrically about the motor shaft. Can be assembled with two reducer casings. As a result, a geared motor with two legs having different output shaft heights can be produced at low cost while using a common motor, a common joint cover as a member, and a common speed reduction mechanism as a member. The present invention is particularly effective when it is desired to enhance variations in the direction in which the height of the output shaft is further lowered in the product group in which the height of the output shaft has been conventionally set high.

  The present invention relates to a geared motor manufacturing method of any one of the first and second geared motors in a geared motor product group including first and second geared motors in which a motor and a speed reducer are integrated. The first and second geared motors, a common motor, a common speed reduction mechanism including an output shaft, and a common joint cover having a cover side shaft support portion capable of supporting a part of each shaft of the speed reduction mechanism; First and second reduction gears each having first and second body side shaft support portions capable of supporting other parts of the shafts of the speed reduction mechanism and first and second leg portions formed integrally with each other. A casing, wherein the first main body side shaft support portion is formed at a position where all of the second main body side shaft support portions are reversed symmetrically with respect to each other about the motor shaft of the motor; The second reducer casing A step of selecting one of the first and second reduction gear casings, the common motor, a common speed reduction mechanism, a common joint cover, and the selected first or second. Using the reduction gear casing, the joint cover and the reduction mechanism are left as they are or the motor shaft is used so as to match the first or second main body side shaft support portion of the selected first or second reduction gear casing. Assembling one of the first and second geared motors having different output shaft heights by reversing each of them as a center symmetrically and assembling the selected first or second reduction gear casing. And a manufacturing method of a geared motor characterized by including.

  ADVANTAGE OF THE INVENTION According to this invention, the product variation from which the height of an output shaft differs in a leg part integrated type CAD motor can be enriched more at low cost.

  Hereinafter, an example of an embodiment of the present invention will be described in detail based on the drawings.

  In the geared motor series (product group) according to this embodiment, as will be described in detail later, two types of geared motors (first geared motor 104 and second geared motor 108) are prepared with the same frame number and the same gear ratio. Has been.

  The first and second geared motors 104 and 108 are directly installed on the floor B1 or the like as so-called “legged geared motors”.

  In the first and second geared motors 104 and 108, the components of the motor 112, the joint cover 136, and the speed reduction mechanism 110 are common as “members themselves”. Therefore, a common code is used for the first and second geared motors 104 and 108. In order to avoid the confusion of the description on the embodiment, the names are not particularly given the first and second characters. As for the other members, the same names and symbols are used for the members that are the same. However, since the speed reduction mechanism 110 and the joint cover 136 are different in the second geared motor 108 from the first geared motor 104 and are incorporated in the second geared motor 108, the first geared motor 104 side ( The first side) and the second geared motor 108 side (second side) are differentiated. That is, the speed reduction mechanism 110T and the joint cover 136T in the second geared motor 108 are the same as the speed reduction mechanism 110 and the joint cover 136 in the first geared motor 104, but the speed reduction mechanism 110 in the first geared motor 104 and Compared with the joint cover 136, the motor 112 is incorporated upside down with respect to the motor shaft 118 of the motor 112.

  As described above, the first and second geared motors 104 and 108 are similar in basic configuration. First, the configuration of the first geared motor 104 will be described in detail with reference to FIG. 1, and then using FIG. The difference between the first and second geared motors 104 and 108 will be described.

  Referring to FIG. 1, the first geared motor 104 is obtained by integrally connecting a motor 112 and a first speed reducer 114 having a speed reduction mechanism 110. Note that FIG. 1 is appropriately developed for convenience, and is not a purely cut section.

  The speed reduction mechanism 110 will be described. A pinion 120 is integrally formed on the motor shaft 118 of the motor 112. The pinion 120 meshes with the intermediate gear 122. An intermediate pinion 126 is directly formed on the intermediate shaft 124 in which the intermediate gear 122 is incorporated. The intermediate pinion 126 meshes with the output gear 128. By rotating the output gear 128, the output shaft 130 in which the output gear 128 is incorporated can be rotated.

  A joint cover 136 is disposed between the motor casing 132 of the motor 112 and the first reduction gear casing 102 of the first reduction gear 114. The joint cover 136 can support a cover side shaft support portion, that is, a cover side output shaft support portion 138 capable of supporting one end (part) 131 of the output shaft 130 and one end (part) 123 of the intermediate shaft 124. A cover-side intermediate shaft support portion 140 is formed. On the other hand, the first reduction gear casing 102 of the first reduction gear 114 has a main body side shaft support portion, that is, a main body side output shaft support portion 142 capable of supporting the other part 133 of the output shaft 130, and an intermediate shaft 124. A main-body-side intermediate shaft support portion 144 that can support the other end (other part) 125 is formed.

  The first reduction gear casing 102 is integrally formed with a first leg portion 146 for installing the first geared motor 104 on the floor B1.

  Next, the configuration of the second geared motor 108 will be described focusing on the difference from the first geared motor 104. 2A and 2B show the first geared motor 104, and FIGS. 2C and 2D show the second geared motor 108, respectively. The first geared motor 104 shown in FIGS. 2A and 2B is exactly the same as the configuration shown in FIG. 1, but is drawn at the same scale as FIGS. 2C and 2D for convenience of comparison. It has been reworked.

  As described above, the components of the motor 112, the joint cover 136, and the speed reduction mechanism 110 of the second geared motor 108 are the same as those used in the first geared motor 104 as “members themselves”. However, regarding the speed reduction mechanism 110 and the joint cover 136, the second geared motor 108 is different from the first geared motor 104 only in how it is assembled. For convenience, the second geared motor 108 side uses a symbol with a letter “T” added to the end.

  In the second geared motor 108, the common reduction mechanism 110T and the joint cover 136T are used as members, and the motor shaft 118 of the (common) motor 112 is compared with the reduction mechanism 110 and the joint cover 136 in the first geared motor 104, respectively. As the center, they are incorporated upside down in a point-symmetric manner.

  Among the components of the second geared motor 108, the “member itself” is different from the components of the first geared motor 104 only in the second reducer casing 106 of the second reducer 115. The second reduction gear casing 106 including the second leg 156 is different in overall shape from the first reduction gear casing 102 including the first leg 146. Further, the second reduction gear casing 106 is configured of the main body side shaft support portion of each shaft, that is, the main body side output shaft support portion 142T and the intermediate shaft 124T for supporting a part (other part) 133T of the output shaft 130T. The method of forming the main body side intermediate shaft support portion 144T that supports the other end (the other part) 125T is different from that of the first reduction gear casing 102. That is, the main body side output shaft support portion 142T and the main body side intermediate shaft support portion 144T in the second reduction gear casing 106 are all of the main body side output shaft support portion 142 and the main body side intermediate shaft support portion 144 in the first reduction gear casing 102. These are formed in a mode in which the motor shaft 118 of the motor 112 is vertically inverted with respect to each other about the motor shaft 118.

  As shown in FIG. 2B, bolt holes (or pin holes) 160 a to 160 h when the joint cover 136 is assembled for the first geared motor 104 are formed in the first reduction gear casing 102. Thereby, in the 1st geared motor 104, the joint cover 136 can be connected with the 1st reduction gear casing 102. FIG. Further, as shown in FIG. 2D, bolt holes (or pin holes) in the case where a joint cover 136T that is turned upside down with respect to the joint cover 136 for the second geared motor 108 is incorporated in the second reduction gear casing 106. ) 160aT to 160hT are formed. The bolt holes (or pin holes) 160a to 160h of the first reduction gear casing 102 and the bolt holes (or pin holes) 160aT to 160hT of the second reduction gear casing 106 are point-symmetric with respect to the motor shaft 118. . In this embodiment, of reference numerals 160a to 160h and 160aT to 160hT, only reference numerals 160c, 160h, 160cT, and 160hT are pin holes, and the others are bolt holes.

  In this connection, the speed reduction mechanism 110 (pinion 120, intermediate gear 122, intermediate shaft 124, intermediate pinion 126, output gear 128, and output shaft 130) in the first geared motor 104 is connected to the motor shaft 118 in the second geared motor 108. (In other words, centering on a pinion 120T formed on the motor shaft 118 itself), each of them is incorporated as a speed reduction mechanism 110T that is vertically inverted in a point-symmetric manner. 2 (C) and 2 (D), the letter “T” is also added to the end of the reference numeral of each component of the speed reduction mechanism 110T for the second geared motor 108, and the speed reduction mechanism 110 for the first geared motor 104. Differentiated from each component of.

  As a result, the output shaft 130 of the first geared motor 104 in which the first reduction gear casing 102 is incorporated is incorporated above the motor shaft 118 at the first height H1 from the floor (the bottom surface of the first leg 146) B1. However, the output shaft 130T of the second geared motor 108 in which the second reduction gear casing 106 is incorporated is below the motor shaft 118 and has a second height H2 from the floor (the bottom surface of the second leg portion 156) B1. Will be incorporated. The first height H1 is different from the second height H2.

  With the above configuration, only the first and second reduction gear casings 102 and 106 are different as members, and the subsequent components are completely the same including the members of the reduction mechanism 110 (110T) of the first and second reduction gears 114 and 115. Are used (with the same frame number and the same gear ratio), the first and second types of the first and second heights H1 and H2 differing from the floor B1 of the output shaft 130 (130T) are different. The geared motors 104 and 108 can be present in the series.

  In this embodiment, the second height h2 of the second leg 156 of the second reduction gear casing 106 is formed higher than the first height h1 of the first leg 146 of the first reduction gear casing 102. Has been. This is because, in the second geared motor 108, the position of the output shaft 130T can be lower than the position of the motor shaft 118. As a result, when the output shaft 130T becomes too lower than the desired height, the second height of the second leg 156 is appropriately set. In order to show that h2 may be set high, this is an example. That is, in order to obtain the desired first height (H1) of the output shaft (130), the first height (h1) of the first leg (146) is set to the corresponding first height. The second height (h2) of the second leg (156) corresponds to prepare the reduction gear casing (102) and to obtain the desired second height (H2) of the output shaft (130T). The second reduction gear casing (106) set at the second height may be appropriately prepared.

  In the above embodiment, the joint cover 136 (136T) can be turned upside down with respect to the motor casing 132 of the motor 112, and the motor 112 is independent of the up / down orientation of the joint cover 136. Can be turned upside down. Thereby, for example, it is possible to keep the terminal box 170 (see FIG. 1) so as to always be on the upper side of the motor 112. In order to realize this, the arrangement positions of a plurality of bolts (only reference numeral 172 is shown) for connecting the motor casing 132 and the joint cover 136 of the motor 112 may be point-symmetric about the motor shaft 118.

  Of course, the motor casing 132 and the joint cover 136 of the motor 112 are integrated in a single connection manner, and the entire motor 112 and the joint cover 136 are inverted upside down with respect to the first and second main body casings 102 and 106. It may be. In this case, the special consideration as described above is not necessary for the arrangement of the bolts 172 for connecting the casing 132 and the joint cover 136 of the motor 112.

  It should be noted that the present invention is not necessarily applied to geared motors of all gear ratios of all frame numbers of the existing series, but only to geared motors of specific gear ratios of specific frame numbers. Appropriate effects can be obtained for the applied part.

  The present invention can be used to construct various geared motor series (product groups).

Sectional drawing which shows the structural example of the 1st geared motor in the series (product group) of the geared motor which concerns on an example of embodiment of this invention. (A) is a reduced sectional view of the first geared motor, (B) is an end view as viewed from the arrow IIB, (C) is a reduced sectional view of the second geared motor, and (D) is an end view as viewed from the arrow IID. Sectional drawing which shows an example of the conventional geared motor

Explanation of symbols

DESCRIPTION OF SYMBOLS 102 ... 1st reduction gear casing 104 ... 1st geared motor 106 ... 2nd reduction gear casing 108 ... 2nd geared motor 180 ... 3rd reduction gear casing 182 ... 3rd geared motor 110 ... reduction mechanism 112 ... motor 114 ... 1st reduction gear 115 2nd reduction gear 118 ... Motor shaft 122 ... Intermediate shaft 130 ... Output shaft 132 ... Motor casing 136 ... Joint cover 138 ... Cover side output shaft support portion 140 ... Cover side intermediate shaft support portion 142 ... Body side output shaft support portion 144... Main body side intermediate shaft support portion H1, H3... First and second heights

Claims (3)

A geared motor product group including first and second geared motors in which a motor and a speed reducer are integrated,
The first geared motor includes a first motor including a first motor casing, a first speed reduction mechanism including a first output shaft, and supports a part of each shaft of the first speed reduction mechanism connected to the first motor casing. A first joint cover having a possible first cover side shaft support portion, and a first body side shaft support portion capable of supporting another part of each shaft of the first speed reduction mechanism and being integrally formed A first reduction gear casing having legs,
The second geared motor includes a second motor that is common to the first motor and a second output shaft that is composed of a member that is common to the first output shaft, and is composed of a member that is common to the first reduction mechanism. And each of the 2nd reduction gear mechanism connected with the 2nd motor casing and the 2nd reduction gear mechanism built in the aspect which reversed the 1st reduction gear mechanism in the point symmetry centering on the motor axis of the 2nd motor A part of the shaft can be supported, is composed of a member common to the first joint cover, and is incorporated in a manner in which the first joint cover is inverted symmetrically about the motor shaft of the second motor. The second joint cover and the other part of each shaft of the second speed reduction mechanism can be supported, and the first body side shaft support portion is inverted symmetrically about the motor shaft of the second motor. 2nd main body side shaft support part formed at a certain position And a second leg portion that is integrally formed and has a height from the bottom surface of the second leg portion to the second output shaft, the height of the first output from the bottom surface of the first leg portion of the first geared motor. A geared motor product group comprising: a second reduction gear casing set to a height different from the height to the shaft. In claim 1,
The geared motor product group, wherein the second joint cover is connectable in an inverted state with respect to the second motor casing of the second motor. In the geared motor product group including the first and second geared motors, in which the motor and the speed reducer are integrated, a manufacturing method of the geared motor of either the first or second geared motor,
The first and second geared motors, a common motor, a common speed reduction mechanism including an output shaft, and a common joint cover having a cover side shaft support portion capable of supporting a part of each shaft of the speed reduction mechanism; The first and second reduction gears have first and second main body side shaft support portions capable of supporting other parts of the respective shafts of the speed reduction mechanism, and the first and second leg portions are integrally formed. The first casing is a machine casing, and the first main body side shaft support portion is formed at a position where all of the second main body side shaft support portions are reversed symmetrically with respect to each other about the motor shaft of the motor. Preparing a second reducer casing;
Selecting one of the first and second reducer casings;
Using the common motor, the common speed reduction mechanism, the common joint cover, and the selected first or second speed reducer casing, the first or second speed reducer casing of the selected first or second speed reducer casing. (2) The joint cover and the speed reduction mechanism are assembled to the selected first or second speed reducer casing as they are or inverted with respect to each other about the motor shaft so as to match the main body side shaft support portion. Assembling the geared motor of either the first or second geared motor having different output shaft heights,
The manufacturing method of the geared motor characterized by including.

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