JP2016038088A - Speed reduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire a speed reduction device which can be mounted on a variety of mating members at lower cost.SOLUTION: A speed reduction device 10 which includes a reduction gear 11, a motor 12 and a motor adapter 14 arranged between the reduction gear 11 and the motor 12 also includes a member for base mounting (member for mating member mounting) 60 for mounting a base (mating member) 16. The reduction gear 11 has a reduction gear flange part 50 on the outer periphery of a casing 28 of the reduction gear 11. On one side in an axial direction of the reduction gear flange part 50, the motor adapter 14 is fixed, and on the other side in the axial direction of the reduction gear flange part 50, the member 60 for base mounting is fixed. The member 60 for base mounting has a mounting part 60C for mounting the base 16 on further radially outside than the reduction gear flange part 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a reduction gear.

  Patent Document 1 discloses a speed reducer that is used by being incorporated in an industrial robot. The reduction gear includes a reduction gear, a motor, and a motor adapter disposed between the reduction gear and the motor.

  The speed reducer is attached to the arm (partner member) of the industrial robot via a flange formed on the outer periphery of the casing of the speed reducer, and the next stage arm is It is rotated relative to the arm attached to the reduction gear.

JP 2006-263878 A

  Of course, the speed reducer is used by being attached to various counterpart members in addition to the arm of the industrial robot. When trying to use a specific reduction gear mounted on a mating member with different mating dimensions, a new speed reducer with a different shape of the flange on the outer periphery of the casing, i.e., a flange that can be mounted on the mating member. The speed reducer including the casing having the above has been individually designed and manufactured to cope with it.

  However, this method means, in other words, that it is necessary to design and manufacture the casing every time the mating member changes. Since the casing is originally a large-sized and high-cost part, it is a factor of cost increase. It was.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a reduction gear that can be attached to various mating members at lower cost.

  The present invention is a speed reducer comprising a speed reducer, a motor, and a motor adapter disposed between the speed reducer and the motor, and includes a mating member mounting member for mounting a mating member, The speed reducer has a speed reducer flange portion on the outer periphery of the casing of the speed reducer, the motor adapter is fixed to one side in the axial direction of the speed reducer flange portion, and the other side in the axial direction of the speed reducer flange portion. The mating member mounting member is fixed, and the mating member mounting member has a mounting portion for mounting the mating member on a radially outer side than the speed reducer flange portion. Is.

  In the speed reducer according to the present invention, the motor adapter is fixed to one side in the axial direction of the speed reducer flange portion provided on the outer periphery of the casing of the speed reducer, and the counterpart member mounting member is fixed to the other side in the axial direction. . The mating member mounting member has a mounting portion for mounting the mating member on the radially outer side than the speed reducer flange portion.

  Accordingly, the speed reducer can be attached to the mating member of various sizes or shapes via the mating member mounting member without newly designing and manufacturing a casing of the high-speed speed reducer. As a result, the cost for securing the contact with the counterpart member can be reduced, and the cost of the entire reduction gear can be reduced.

  According to the present invention, it is possible to obtain a reduction gear that can be attached to various mating members at lower cost.

1 is an overall cross-sectional view of a speed reducer according to an example of an embodiment of the present invention. Fig. 1 is an enlarged cross-sectional view of a main part of the speed reducer in Fig. 1. The principal part expanded sectional view which shows the modification of the member for the other member attachment

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an overall cross-sectional view of a reduction gear according to an example of an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of a main part of the reduction gear of FIG.

  The speed reducer 10 includes a speed reducer 11, a motor 12, and a motor adapter 14 disposed between the speed reducer 11 and the motor 12, and the whole is attached to a base (counter member) 16. used.

  Hereinafter, a more specific configuration will be described in detail.

  The input shaft 18 of the speed reducer 11 has a hollow portion 18A, and the motor shaft 15 of the motor 12 is inserted into the hollow portion 18A. The motor shaft 15 and the input shaft 18 are connected by the clamping force of the friction clamping device 19. Three eccentric bodies 20 are integrally formed on the input shaft 18. Three external gears 24 are swingably incorporated on the outer periphery of the eccentric body 20 via rollers 22. Each external gear 24 is in mesh with the internal gear 26.

  The internal gear 26 includes an internal gear main body 26A integrated with the casing 28, and a cylindrical pin 26B that is rotatably supported by the internal gear main body 26A and constitutes internal teeth of the internal gear 26. It consists of For this reason, the casing 28 is provided with pin grooves 26C for rotatably holding the pins 26B along the axial direction by the number of internal teeth (the number of pins 26B). The number of internal teeth of the internal gear 26 is slightly larger (only 1 in this example) than the number of external teeth of the external gear 24.

  The external gear 24 has through holes 24A formed at positions offset from the respective centers C24. The pin member 30 (more specifically, the roller member 31 fitted on the pin member 30) passes through the through hole 24A with a gap twice as much as the eccentric amount of the eccentric body 20. The pin member 30 is integrated with a first carrier 32 disposed on the side opposite to the motor in the axial direction of the external gear 24. The first carrier 32 is connected to the second carrier 34 disposed on the axial motor side of the external gear 24 via the pin member 30 by a bolt 33. The first and second carriers 32, 34 are rotatably supported on the casing 28 by angular ball bearings 36, 38, and the input shaft 18 is rotatably supported via ball bearings 40, 41.

  In this embodiment, the first carrier 32 on the side opposite to the motor in the axial direction also functions as an output side cover of the casing 28 of the speed reducer 11, and the first carrier 32 constitutes an output member of the speed reducer 11. doing. A rotating disk (driven body) 42 such as a magazine is connected to the first carrier 32 through a tap hole 32 </ b> A, and the rotating disk 42 is rotationally driven by the rotation of the first carrier 32.

  Here, the configuration related to the attachment of the reduction gear 10 to the base (counter member) 16 will be described in detail.

  As described above, the speed reducer 10 includes the speed reducer 11, the motor 12, and the motor adapter 14 disposed between the speed reducer 11 and the motor 12, and the whole is attached to the base (counter member) 16. Is used in the

  The speed reducer 11 of the speed reducer 10 includes a speed reducer flange portion 50 that protrudes in the radial direction on the outer periphery of the casing 28. The reduction gear flange portion 50 has a first surface 50A perpendicular to the shaft on one side in the axial direction, and a second surface 50B perpendicular to the shaft on the other side in the axial direction. In the present embodiment, the axial direction refers to the axial direction of the motor shaft 15 of the motor 12. It can also be said that it points in the axial direction of the internal gear 26 and the first carrier 32 (output member of the speed reducer 11). In this embodiment, the outer diameter of the outer peripheral surface 50C of the reduction gear flange portion 50 is d50C. The outer diameter of the outer peripheral surface 28A of the casing 28 of the speed reducer 11 is d28A. That is, the protrusion height h50 of the reduction gear flange 50 from the outer peripheral surface 28A of the casing 28 is {(d50C-d28A) / 2}.

  The speed reducer 10 has a base mounting member (counter member mounting member) 60 for mounting the speed reducer 10 to a base (counter member) 16. In this embodiment, the base mounting member 60 is constituted by a flat ring-shaped flange member.

  The inner diameter D60A of the inner peripheral surface 60A of the base mounting member 60 is substantially the same as the outer diameter d28A of the outer peripheral surface 28A of the casing 28 of the speed reducer 11 (d28A≈D60A: clearance fit). That is, in the base mounting member 60, the inner peripheral surface 60 </ b> A of the base mounting member 60 forms an inlay portion with the outer peripheral surface 28 </ b> A of the casing 28 of the speed reducer 11. Accordingly, it is easy to adjust the radial position of a base bolt insertion hole 60S1 and a flange bolt insertion hole 50S, which will be described later, during assembly.

  In this embodiment, the outer diameter d60B of the outer peripheral surface 60B of the base mounting member 60 is larger than the outer diameter d50C of the outer peripheral surface 50C of the reducer flange portion 50 (d60B> d50C), and the base mounting member 60 is decelerated. An attachment portion 60 </ b> C for attaching the base 16 to the radially outer side than the machine flange portion 50 is provided.

  Here, the “attachment portion” refers to a “part of the member for attaching the counterpart member where the member for attaching the counterpart member contacts the counterpart member”. In this example, it corresponds to “a part of the base mounting member 60 where the base mounting member 60 is in contact with the axially opposite motor side end surface 16G of the base 16”.

  Moreover, in this embodiment, the member 60 for base attachment has the fixing | fixed part 60E fixed to the reduction gear flange part 50 in the radial direction same position as the reduction gear flange part 50. As shown in FIG. The “fixed portion” here refers to “a portion of the member for attaching the other member where the member for attaching the other member contacts the speed reducer flange”. In this example, it corresponds to “a portion of the base mounting member 60 where the base mounting member 60 contacts the second surface 50B of the reduction gear flange portion 50”.

  The “mounting portion” and the “fixing portion” may not always be continuous as in this embodiment, for example, as in a configuration example described later. In other words, the radial positions of the “mounting portion” and the “fixing portion” (as viewed from the axial direction) may be separated or may overlap each other (detailed later).

  In this embodiment, the motor adapter 14 is fixed to one side in the axial direction of the reduction gear flange portion 50 (on the first surface 50A). Further, the base mounting member 60 is fixed to the other axial side of the reduction gear flange 50 (on the second surface 50B).

  Specifically, the speed reducer flange portion 50 is formed with a flange portion bolt insertion hole 50S penetrating the first surface 50A and the second surface 50B in parallel with the shaft. The adapter tapped hole 14T is formed in the motor adapter 14 that contacts the first surface 50A, and the base bolt insertion hole 60S1 is formed in the base mounting member 60 that contacts the second surface 50B. . The adapter part tap hole 14T and the base part bolt insertion hole 60S1 have the same formation pitch circle as the flange part bolt insertion hole 50S of the reduction gear flange part 50 (all P71), and the positions in the circumferential direction are the same.

  The base mounting member 60 and the motor adapter 14 are fastened together by the same first connecting bolt 71 together with the reduction gear flange portion 50 through the adapter portion tap hole 14T and the base portion bolt insertion hole 60S1. The first connecting bolt 71 is inserted into the base mounting member 60 from the non-motor side (anti-base side).

  The base 16 is fixed to the speed reducer flange portion 50 of the speed reducer 11 via a base mounting member 60. Specifically, a mounting portion bolt insertion hole 60S2 is formed in the mounting portion 60C of the base mounting member 60. Further, a tap hole 16T is formed in the base 16 at the same position as the mounting portion bolt insertion hole 60S2. The mounting portion bolt insertion hole 60S2 and the tap hole 16T have the same formation pitch circle (both are P73) and have the same circumferential position. With this configuration, the base 16 allows the second connecting bolt 73 to be inserted into the mounting portion bolt insertion hole 60 </ b> S <b> 2 of the base mounting member 60 from the non-motor side (anti-base side), and the second connecting bolt 73 is inserted into the base 16. The base mounting member 60 can be fixed by screwing with the tap hole 16T.

  In this embodiment, the outer diameter d50C of the outer peripheral surface 50C of the speed reducer flange portion 50 is substantially the same as the inner diameter D16B of the inner peripheral surface 16B of the base 16 that is the counterpart member, and the outer peripheral surface 50C of the speed reducer flange portion 50 is the same. An inlay portion with the base 16 which is a counterpart member is formed. As apparent from FIG. 2, in this embodiment, the outer diameter d14A of the outer peripheral surface 14A of the motor adapter 14 is also substantially the same as the inner diameter D16B, and the outer peripheral surface 14A of the motor adapter 14 is also the base 16 that is the counterpart member. And the inlay part.

  As described above, when both the outer peripheral surface 50C of the reduction gear flange 50 or the outer peripheral surface 14A of the motor adapter 14 form an inlay portion with the base 16, a wide inlay portion can be formed in the axial direction. The speed reducer 11 and the base 16 can be connected with high rigidity. However, it is not always necessary that both the outer peripheral surface 50C of the reduction gear flange 50 and the outer peripheral surface 14A of the motor adapter 14 form an inlay portion with the base 16. That is, only one of them may constitute an inlay portion with the base 16.

  For example, when a mating member mounting member having an inlay portion with the mating member as described later is adopted, the speed reducer flange portion and the motor adapter have no inlay portion with the mating member. However, the connection with the mating member is possible. Conversely, all of the reduction gear flange portion, the motor adapter, and the mating member mounting member may have an inlay portion with the mating member.

  In this embodiment, the inner diameter D60A of the inner peripheral surface 60A of the base mounting member 60 is made substantially equal to the outer diameter d28A of the outer peripheral surface 28A of the casing 28 in consideration of convenience during assembly (inlay fitting). ) However, the inner diameter D60A of the inner peripheral surface 60A of the base mounting member 60 does not necessarily need to coincide with the outer diameter d28A of the outer peripheral surface 28A of the casing 28 (it is not always necessary to fit with the spigot). In other words, the fixing portion 60 </ b> E of the base mounting member 60 may not necessarily be configured to contact the “entire surface” of the second surface 50 </ b> B of the reduction gear flange portion 50.

  Reference numeral 75 denotes an O-ring that seals the lubricant in the speed reducer 11 together with the oil seal 77. That is, the motor adapter 14 according to the present embodiment has the function of the original motor adapter 14 for connecting the speed reducer 11 and the motor 12 and also functions as the input side cover of the casing 28 of the speed reducer 11. Yes. In the present embodiment, the outer diameter d14A of the outer peripheral surface 14A of the motor adapter 14 is formed to be larger than the outermost diameter d12 of the motor 12.

  Thus, the entire motor 12 can be positioned on the side opposite to the axial reduction gear with respect to the opening 16B through the inner peripheral surface 16B of the base 16 (that is, the opening of the base 16 with respect to the motor adapter 14). .

  Next, the operation of the reduction gear device 10 will be described.

  First, the operation of the drive system of the speed reducer 11 will be briefly described.

  When the motor shaft 15 of the motor 12 rotates, the input shaft 18 connected to the motor shaft 15 via the friction clamp device 19 rotates integrally. When the eccentric body 20 is rotated by the rotation of the input shaft 18, the external gear 24 incorporated on the outer periphery of the eccentric body 20 via the rollers 22 swings. Since the external gear 24 is internally meshed with the internal gear 26, a phenomenon occurs in which the meshing position with the internal gear 26 is sequentially shifted by this swing.

  Thereby, every time the input shaft 18 rotates once, the external gear 24 is out of phase with the internal gear 26 in a fixed state by a difference in the number of teeth (one tooth) and rotates. The rotation component is transmitted to the pin member 30 penetrating the external gear 24, and the first and second carriers 32 and 34 supporting the pin member 30 rotate. The rotation of the first and second carriers 32 and 34 drives a rotary disk 42 such as a magazine connected to the first carrier 32 via a tap hole 32A. The swing component of the external gear 24 is absorbed by the gap between the pin member 30 and the through hole 24A.

  Here, in the reduction gear device 10 according to the present embodiment, the formation pitch circle P71 of the flange bolt insertion hole 50S of the reduction gear flange portion 50 is smaller than the inner diameter D16B of the inner peripheral surface 16B of the base 16. Therefore, the speed reducer 11 cannot be directly attached to the base 16 using the flange bolt insertion hole 50S of the speed reducer flange 50. Conventionally, in such a case, a case in which a reduction gear flange portion of the casing is formed larger is manufactured and coped with. When the reduction gear flange portion of the casing is enlarged, the motor adapter to be fixed to one side in the axial direction of the reduction gear flange portion has to be greatly changed.

  However, according to the configuration of the present embodiment, the base 16 can be attached to the speed reducer flange portion 50 of the speed reducer 11 via the base mounting member 60. The flange bolt insertion hole 50S of the reduction gear flange 50 can be used as it is without changing the connection of the motor adapter 14, so that the motor adapter 14 can also be used without change. Therefore, compared with the conventional “method of changing both the speed reducer flange portion and the motor adapter in accordance with the mating member”, the cost can be significantly reduced.

  In particular, in the present embodiment, the casing 28 of the speed reducer 11 also serves as the internal gear main body 26A of the internal gear 26, and a pin groove for rotatably holding the pin 26B on the inner peripheral side of the casing 28. 26C is formed. For this reason, the manufacturing cost of the casing 28 is particularly high. Therefore, the cost reduction effect of not having to remanufacture the casing 28 of the speed reducer 11 having the function of an internal gear for various mating members is particularly great.

  The outer diameter d14A of the outer peripheral surface 14A of the motor adapter 14 (which constitutes an inlay portion with the base 16) is larger than the outermost diameter d12 of the motor 12. For this reason, the entire motor 12 can pass through the opening 16B of the base 16 as a whole, and can be positioned on the side opposite to the reduction gear with respect to the opening 16B. Thereby, the dimension L1 (FIG. 1) in which the reduction gear 10 protrudes from the base 16 can be reduced.

  In addition, during maintenance or the like, the speed reduction device 10 can be detached from the base mounting member 60 side (the non-motor side: the counter mating member side) while the motor 12 is attached. Further, the motor adapter 14, the base mounting member 60, and the base 16 are mutually connected by the first and second connecting bolts 71 and 73 that are inserted from the base mounting member 60 side (the non-motor side: the counter mating member side). Therefore, all of the removal work and the re-fixing work can be performed from the base mounting member 60 side, and the workability is also good in this respect.

  FIG. 3 shows a modification of the above embodiment.

  Also in FIG. 3A, the base mounting member (counter member mounting member) 80 has a mounting portion 80 </ b> C for mounting the base 16 on the radially outer side than the speed reducer flange portion 50. Further, the base mounting member 80 has a fixing portion 80 </ b> E fixed to the speed reducer flange portion 50 at the same radial position as the speed reducer flange portion 50. However, in the example of FIG. 3A, the radial positions of the attachment portion 80C and the fixing portion 80E are separated (as viewed from the axial direction). That is, “in the base mounting member 80, the mounting portion 80C where the base mounting member 80 is in contact with the base 16” and “in the base mounting member 80, the base mounting member 80 is the speed reducer. The position in the radial direction of the fixing portion 80E that is a portion in contact with the flange portion 50 is separated when viewed from the axial direction.

  Specifically, the base mounting member 80 has a T-shaped cross section, is disposed adjacent to the speed reducer flange portion 50, and has a ring-shaped portion 80R provided with a mounting portion 80C and a fixing portion 80E. The ring-shaped portion 80R has a spacer portion 80K protruding from the surface on the motor side. The spacer portion 80K is disposed between the outer peripheral surface 50C of the reduction gear flange portion 50 (and the outer peripheral surface 14A of the motor adapter 14) and the inner peripheral surface 16B of the base 16. The inner peripheral surface 80K1 of the spacer portion 80K constitutes an inlay portion with at least one of the reduction gear flange portion 50 and the motor adapter 14 (both in the present embodiment), and the outer peripheral surface 80K2 of the spacer portion 80K is connected to the base 16 The inlay part is configured.

  That is, in this embodiment, the base mounting member 80 includes a spacer portion inner peripheral surface 80K1 that forms an inlay portion with at least one of the reduction gear flange portion 50 and the motor adapter 14 (both in this embodiment), the base 16 And the spacer portion outer peripheral surface 80K2 constituting the inlay portion.

  Therefore, by adjusting (changing) the thickness (radial length) W80K of the spacer portion 80K of the base mounting member 80, the formation pitch of the mounting portion bolt insertion holes 80S2 of the mounting portion 80C of the base mounting member 80 The circle and the formation pitch circle of the tap holes 16T of the base 16 can be matched. That is, as in the configuration example of FIG. 3A, the inner diameter D16B of the inner peripheral surface 16B of the base 16 is equal to the outer diameter d50C of the outer peripheral surface 50C of the reduction gear flange portion 50 (or the outer peripheral surface 14A of the motor adapter 14). Even in the case of larger than (diameter), it can be dealt with only by adjusting the thickness W80K of the spacer portion 80K of the base mounting member 80.

  In the base mounting member 80 in FIG. 3A, the axial length L80E at the fixing portion 80E is the same as the axial length L80C at the mounting portion 80C (L80E = L80C). However, the axial length L80E at the fixed portion 80E and the axial length L80C at the mounting portion 80C may be different. Accordingly, it is possible to absorb the deviation between the axial position of the second surface 50B on the other axial side of the reduction gear flange 50 and the axially opposite motor side end surface 16G of the base 16 (or The speed reducer 11 can be attached to the base 16 with the position in the axial direction positively shifted).

  About another structure, it has the structure similar to previous embodiment. For this reason, the same operational effects as those of the previous embodiment can be obtained.

  In the configuration example of FIG. 3B, a base mounting member 90 having an L-shaped cross section is employed.

  More specifically, the base mounting member 90 includes a first portion 90P disposed adjacent to the speed reducer flange portion 50, and an axially opposite motor side from the inner end portion of the first portion 90P. Projecting second portion 90Q, and as a result, the entire cross-sectional shape is L-shaped. The first portion 90P is configured by a flat plate ring-shaped flange member similar to the base mounting member 60 of FIGS. 1 and 2 described above.

  In the base mounting member 90, the outer peripheral surface 90K3 of the second portion 90Q is in contact with the inner peripheral surface 16B of the base 16 to form an inlay portion with the base 16.

  Further, in this base mounting member 90, the inner side surfaces (the inner peripheral surface of the first portion 90P and the inner peripheral surface of the second portion 90Q) 90K1 are in contact with the outer peripheral surface 28A of the casing 28 of the speed reducer 11, An inlay portion is formed with the outer peripheral surface 28A.

  Further, in this base mounting member 90, a part of the motor-side end surface 90K2 of the first portion 90P is in contact with the second surface 50B on the other axial side of the reduction gear flange 50, and the contacted portion is (deceleration). The fixing portion 90E is fixed to the second surface 50B on the other axial side of the machine flange portion 50).

  Further, in this base mounting member 90, the non-motor side end surface 90K4 of the first portion 90P is in contact with the axial direction motor side end surface 16H of the base 16, and the contacted portion has a diameter larger than that of the speed reducer flange portion 50. A mounting portion 90C is mounted).

  The mounting portion 90C is located on the radially outer side than the fixed portion 90E. More specifically, the mounting portion 90C and the fixed portion 90E overlap in the radial direction by δ when viewed from the axial direction. Yes.

  With this configuration, “the inner diameter D16B of the inner peripheral surface 16B of the base 16 is slightly smaller than the outer diameter d50C of the outer peripheral surface 50C of the reduction gear flange portion 50 (or the outer diameter of the outer peripheral surface 14A of the motor adapter 14). Even if it is “small”, it can be dealt with only by adjusting the radial thickness W90K3 of the second portion 90Q. That is, the distance (W90K3) between the outer peripheral surface 28A of the casing 28 of the reduction gear 11 and the inner peripheral surface 16B of the base 16 can be adjusted by adjusting the radial thickness W90K3 of the second portion 90Q. Thus, the position of the formation pitch circle of the attachment portion bolt insertion hole 90S2 of the attachment portion 90C and the formation pitch circle of the tap holes 16T1 of the base 16 can be matched (adjusted).

  As described above, in the present invention, “the mating member mounting member has a mounting portion for mounting the mating member on the outer side in the radial direction than the speed reducer flange portion” includes “the mounting portion of the mating member mounting member. A configuration in which only a part is located radially outside the speed reducer flange portion is included.

  3B further has an axial length L90C between the motor-side end surface 90K2 and the counter-motor-side end surface 90K4 of the first portion 90P of the base mounting member 90. By adjusting, the distance between the second axial surface second side 50B of the reduction gear flange 50 and the axial direction motor side end surface 16H of the base 16 can be adjusted. Accordingly, it is possible to absorb the deviation between the axial position of the second surface 50B on the other axial side of the reduction gear flange 50 and the axial motor side end surface 16H of the base 16 (or positively). The speed reducer 11 can be attached to the base 16 in a state where the axial position is intentionally shifted).

  That is, this configuration example also corresponds to the dimensions and formation positions of the outer peripheral surface 28A of the casing 28 and the outer peripheral surface 50C of the speed reducer flange 50 in various speed reducers 11 only by adjusting the dimensions of the base mounting member 90. Thus, bases (counter members) 16 of various shapes or sizes can be freely attached.

  In the configuration example of FIG. 3B, the base 16 is positioned on the side opposite to the motor from the base mounting member 90. Then, the base mounting member 90 is fixed to the reduction gear flange portion 50 from the side opposite to the motor with the third connecting bolt 76, and the base mounting member 90 and the base 16 are fixed from the motor 12 side. The fourth connecting bolt 78 is used. Thus, for the positional relationship between the mating member mounting member and the mating member, or the bolt insertion direction when connecting the mating member mounting member and the mating member, by selecting the shape of the mating member mounting member, You can choose freely. The shape of the mating member mounting member is not limited to the above example.

  About another structure, it has the structure similar to embodiment already demonstrated. For this reason, the same operational effects as those of the embodiments described above can be obtained.

  In the above-described embodiment, an eccentric oscillating speed reduction mechanism referred to as a central crank type in which only one input shaft (eccentric body shaft) having an eccentric body exists on the shaft center (radial center) of the internal gear. Although the speed reducer which has was shown, the speed reduction mechanism of the speed reducer of the speed reducer according to the present invention is not particularly limited to this example. For example, a plurality of eccentric body shafts are provided at positions offset from the axis of the internal gear, and the external gears are swung by synchronously rotating the eccentric bodies provided on the plurality of eccentric body shafts. A reduction mechanism called a so-called sort type may be used. Furthermore, a simple planetary reduction mechanism, a parallel axis reduction mechanism, an orthogonal axis reduction mechanism, or the like may be used.

  Further, the mating member is not limited to the base exemplified in the embodiment, and may be various devices in which the speed reduction device is installed, and peripheral members (for example, a support column).

DESCRIPTION OF SYMBOLS 10 ... Deceleration apparatus 11 ... Reduction gear 12 ... Motor 14 ... Motor adapter 16 ... Base (counter member)
24 ... External gear 26 ... Internal gear 28 ... Casing 50 ... Reduction gear flange 60 ... Base mounting member (member mounting member)
60C ... Mounting part

Claims (7)

A reduction gear comprising a reduction gear, a motor, and a motor adapter disposed between the reduction gear and the motor,
Having a mating member mounting member for mounting the mating member,
The speed reducer has a speed reducer flange on the outer periphery of the casing of the speed reducer,
The motor adapter is fixed to one side in the axial direction of the reducer flange portion,
The counterpart member mounting member is fixed to the other side in the axial direction of the reducer flange portion,
The said other member attachment member has an attachment part which attaches the said other member to the radial direction outer side rather than the said reduction gear flange part. The speed reducer characterized by the above-mentioned. In claim 1,
The speed reducing device, wherein the mating member mounting member and the motor adapter are fastened together by the same bolt. In claim 1 or 2,
An outer peripheral surface of the speed reducer flange portion forms an inlay portion with the counterpart member. In any one of Claims 1-3,
An outer peripheral surface of the motor adapter forms an inlay portion with the mating member. In any one of Claims 1-4,
The said other member attachment member has an inlay part with the said other member. The speed reducer characterized by the above-mentioned. In claim 5,
The mating member mounting member has a spacer portion disposed between the speed reducer flange portion and the mating member, and an outer peripheral surface of the spacer portion constitutes an inlay portion with the mating member. Characteristic reduction gear. In claim 5,
The mating member mounting member includes a first portion disposed adjacent to the speed reducer flange portion, a second portion projecting from the inner end of the first portion toward the axially opposite motor side, The outer peripheral surface of the second portion constitutes an inlay portion with the counterpart member.

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