JP2010031409A - Planetary gear type selvage device in loom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a planetary gear type selvage device which can control or absorb planetary carrier rotation vibrations caused by the rotation fluctuations of a driving shaft to prevent the wear acceleration and the frequent breakages of bobbin holders caused by the rotation fluctuations of the planetary carrier. <P>SOLUTION: The planetary gear type selvage device having a disk-like planetary carrier (3) rotatably disposed around the axis of the central shaft (2, 47) and a solar gear (41) non-rotatably and coaxially disposed with the planetary carrier (3), has resistance-imparting members (46, 91, 93) which contact with a rotator rotated on the axis of the central shaft (2, 47) supporting the planetary gear (3) as a rotation center and having the planetary carrier (3) to impart rotation resistance to the rotator. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a planetary gear-type ear assembly device in a loom, and in particular, a planetary carrier that is rotatably provided around an axis of a central axis, and a pair of support shafts in a symmetrical arrangement with respect to the axis of the central axis A disk-shaped planet carrier that rotatably supports the sun, a sun gear that is coaxially disposed with the planet carrier and provided so as not to rotate, and the other end of each of the pair of support shafts each having a bobbin holder fixed to one end The present invention relates to a planetary gear-type ear assembly device including a pair of planetary gears that are attached to the planetary gear and indirectly mesh with the sun gear. The “indirect meshing” means that the planetary gear and the sun gear are not meshed directly, but the planetary gear is meshed with another gear that meshes with the sun gear. To express.

Examples of the planetary gear type ear assembly device (hereinafter referred to as “planet ear assembly device”) used in the loom include those described in Patent Document 1 or Patent Document 2.

The planetary ear assembly device described in Patent Literatures 1 and 2 includes a sun gear that is non-rotatable in the device, and a disk-like planet carrier that is coaxially disposed with the sun gear and is rotatably provided. The planetary carrier rotatably supports a pair of planetary gears arranged symmetrically with respect to the center of rotation. The pair of planetary gears are meshed with a relay gear that is rotatably supported by the planet carrier and meshes with the sun gear. In the planetary ear assembly apparatus described in Patent Document 1, the planetary carrier is in the form of a gear having gear teeth formed on the outer peripheral portion and is rotatably supported by a central shaft formed integrally with the sun gear. It is configured to be directly rotated by meshing with a drive gear rotated by a drive shaft. Further, in the planetary ear assembly device described in Patent Document 2, the planet carrier is supported so as not to rotate relative to the central axis that rotatably passes through the sun gear, and the central axis is rotationally driven by the drive shaft. It is configured to be rotationally driven by, that is, indirectly rotationally driven.

The planetary gear is attached to one end of a support shaft that is rotatably supported by the planet carrier, and a bobbin holder that holds an ear thread bobbin around which the ear thread is wound is attached to the other end of the support shaft. It is attached. In the planetary ear assembly device including these configurations, when the planet carrier is driven to rotate, the bobbin holder supported by the planet carrier via the support shaft revolves, and the planet gear attached to the support shaft is fixed. It rotates around the support shaft by revolving while meshing indirectly with the sun gear. Thereby, the bobbin holder performs a planetary motion that rotates while revolving. As a result, a pair of ear threads that are drawn from the ear thread bobbins of each bobbin holder and are connected to the woven end of the woven fabric being woven are twisted together while performing an opening movement, and a kinky ear is also formed at the woven end of the woven fabric. Is done.

By the way, in the planetary ear assembly apparatus having such a configuration, for example, when the driving shaft uses a main shaft (primary motor) of a loom (not shown) as a driving source, fluctuations in the rotational speed of the main shaft (hereinafter referred to as “rotational fluctuation”). In other words, the impact caused by the above-mentioned causes causes problems such as acceleration of gear wear or breakage of the bobbin holder. Details are as follows.

The planetary gear mechanism for causing the bobbin holder to perform the planetary motion as described above is a combination of gears such as a sun gear, a planetary gear, and a relay gear. A backlash (play) exists between the meshing gears. Therefore, when the planetary gear mechanism is viewed as a whole, the planetary gear mechanism has a large play corresponding to the total backlash amount (the total backlash amount between the gears). On the other hand, the main shaft of the loom does not always rotate at a constant speed even in the steady operation state, and the load applied to the main shaft by the hammering operation of the chisel using the main shaft as the driving source or the opening motion of the opening device is 1 While rotating, the rotation speed is changed so that a predetermined number of rotations is obtained on average.

When the planetary carrier is rotationally driven by a drive shaft that uses the main shaft of the loom as a drive source, the rotational speed of the drive shaft fluctuates with the rotational fluctuation during one rotation of the main shaft as described above. Vibration in the rotational direction (= rotational unevenness / hereinafter referred to as “rotational vibration”) occurs. When such a rotational vibration occurs in the planetary carrier, the gear teeth mesh with each other at the time when the speed changes due to the presence of the backlash (play) at the gear meshing portion, and the tooth surface is impacted. Is given. And since such an impact generate | occur | produces in the meshing part of each gear in a planetary gear mechanism, the whole planetary ear assembly apparatus receives a big impact. As a result, there arises a problem that wear of the gear tooth surface is promoted, or that the entire impact is applied to the bobbin holder and the bobbin holder is frequently damaged.
JP 2004-190192 A JP 2004-250816 A

Accordingly, an object of the present invention is to provide a configuration capable of suppressing the rotational vibration of the planet carrier caused by the rotational fluctuation of the drive shaft in the planetary ear assembly apparatus described above, and preventing the gear wear from being accelerated and the bobbin holder from being frequently damaged. There is to do.

As described above, the present invention is a planetary carrier that is rotatably provided around the center axis of the center axis, and is a disk that rotatably supports a pair of support shafts in a symmetrical arrangement with respect to the center axis of the center axis. And a planetary gear attached to the other end of each of the pair of support shafts having a bobbin holder fixed to one end thereof. A planetary gear-type ear assembly device including a pair of planetary gears that indirectly mesh with the sun gear is assumed.

And based on the said subject, the planetary ear assembly apparatus of this invention is a rotary body rotated centering on the axis of the said center axis | shaft, Comprising: The rotary body containing the said planet carrier contact | abuts to the said rotary body. A resistance imparting member for imparting rotational resistance is provided.

In the present invention, the resistance applying member may partially abut against the outer peripheral surface of the rotating body at two or more locations, and preferably, on the outer peripheral surface of the rotating body. On the other hand, it is good to contact | abut over the perimeter.

Furthermore, the planetary ear assembly apparatus according to the present invention may include a second resistance applying member that abuts on the support shaft that supports a bobbin holder or the like.

According to the present invention, the rotational resistance is directly or indirectly applied to the planetary carrier by bringing the resistance applying member into contact with the rotating body such as the planetary carrier. For this reason, even if rotational fluctuation occurs in the drive shaft that rotationally drives the rotator, the rotational vibration of the planet carrier caused by the rotational fluctuation is suppressed (absorbed). Thereby, it is possible to prevent the occurrence of problems such as accelerated gear wear and frequent breakage of the bobbin holder due to the aforementioned rotational vibration of the planet carrier. The resistance applying member naturally comes into contact with the planet carrier at a contact pressure that allows rotation of the planet carrier. The contact pressure depends on the material and configuration of the resistance applying member, the rotation speed of the loom, and the like. It is determined accordingly.

Further, according to the resistance imparting member of the present invention, it is possible to suppress the radial vibration (hereinafter referred to as “radial vibration”) of the planet carrier caused by the vibration of the loom itself, and also prevent the bobbin holder and the like from being damaged due to the vibration. it can.

Specifically, during the operation of the loom, the loom itself vibrates violently due to vibration associated with the rocking motion of the kite, impact during hammering, or vibration associated with the opening motion. And since the planetary ear assembly apparatus is provided on the beam erected between the left and right frames of the loom, it is affected by the vibration of the loom. By the way, the influence by the hammering movement mainly acts as vibration in the front-rear direction (warp direction) of the loom, and the influence by the opening movement mainly acts as vibration in the vertical direction. Therefore, the planet carrier in the planetary ear assembly device vibrates violently in the radial direction due to the influence of both vibrations, which causes damage to the bobbin holder and the like.

In contrast, if the resistance applying member is brought into contact with the outer peripheral surface of the rotating body, the radial vibration is received and absorbed by the resistance applying member, so that at least a part of the radial vibration can be suppressed. Is obtained. However, when the resistance applying member is configured to contact the outer peripheral surface of the rotating body, it is desirable that the resistance applying member is formed of a member that can be elastically deformed. The effect of suppressing the radial vibration is not limited to the case where the resistance applying member is brought into contact with the outer peripheral surface of the rotating body, but the resistance applying member with respect to the end surface (front surface and / or rear surface) of the planet carrier in the axial direction of the rotating shaft. It can also be obtained in the case of abutting.

And when the suppression effect of the said radial vibration is considered, it is effective to contact a resistance provision member partially in two or more places with respect to the outer peripheral surface of the said rotary body, and more effectively. It is preferable that the resistance applying member is brought into contact with the outer peripheral surface of the rotating body over the entire circumference. In particular, if the resistance imparting member is brought into contact with the outer peripheral surface of the planet carrier, the vibration suppressing effect can be enhanced.

That is, in the configuration of a general planetary ear assembly device, the planet carrier that is a heavy object itself supports a pair of bobbin holders that are relatively heavy members in the device on the front side thereof. On the other hand, the central axis that supports the planet carrier is supported at a position away from the bobbin holder in the axial direction. As such, in the planetary ear assembly device, the point supporting the weight of the planet carrier and the bobbin holder in the central axis is separated from the point where the central axis itself is supported in the axial direction, in other words, the central axis is its own. Since the heavy object is supported at a position separated from the support point in the axial direction, the central axis is easily affected by vibration on the planet carrier side. Therefore, the resistance imparting member is brought into contact with the outer peripheral surface of the planet carrier that is located near the bobbin holder which is a heavy object and supports the bobbin holder, that is, the planet carrier is supported by the outer peripheral surface. The effect of suppressing the radial vibration can be enhanced.

When providing resistance applying members only in two places, considering the direction of vibration having a large influence, resistance is applied so that the two resistance applying members face each other across the center (center axis) of the planet carrier in that direction. What is necessary is just to provide a member. For example, in general, in a loom, since the influence of vibration due to the striking motion is the largest, it is caused by the striking motion by arranging two resistance imparting members so as to face the warp direction across the central axis. The vibration in the front-rear direction of the planet carrier can be suppressed, and the occurrence frequency of breakage of the bobbin holder can be suppressed as compared with the conventional device. Moreover, when providing partially in three or more places, what is necessary is just to arrange | position a resistance provision member so that the space | interval between each resistance provision member may become equal on the outer peripheral surface of the said rotary body.

Furthermore, the planetary ear assembly device includes the second resistance applying member that comes into contact with the planetary gear and the support shaft that supports the bobbin holder, so that the occurrence of breakage of the bobbin holder can be further suppressed.

Specifically, the bobbin holder is supported on the support shaft and revolves while the bobbin holder rotates, but when the center of gravity of the bobbin holder does not coincide with the axis of the support shaft, the resultant force of centrifugal force due to the rotation of the bobbin holder is supported Acts as a rotational force on the shaft. That is, a rotational moment acts on the support shaft by the rotation of the bobbin holder. However, since the bobbin holder not only rotates but also revolves, this rotational moment varies depending on the relationship between the rotation phase and the revolution direction due to the rotation of the bobbin holder. Accordingly, the rotational moment acting on the support shaft changes during one rotation of the support shaft, and as a result, the rotation speed of the support shaft also varies during one rotation.

As described above, the rotational fluctuation of the support shaft that supports the bobbin holder is influenced not only by the aforementioned rotational fluctuation of the main shaft but also by the planetary motion of the bobbin holder. In that case, even if the rotational vibration of the planetary carrier is suppressed, rotational vibration is generated on the support shaft, and the impact due to the collision of the tooth surfaces at the meshing portion of the gear still occurs. Therefore, by providing the second resistance imparting member as described above, it is possible to suppress (absorb) the rotational vibration of the support shaft caused by the planetary motion of the bobbin holder, and further effectively prevent the bobbin holder from being damaged by the impact. can do.

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

1 to 3 show an embodiment of the present invention. FIG. 1 is a partial sectional side view of a planetary ear assembly device to which the present invention is applied. FIG. It is a back surface sectional view of a planetary gear mechanism part. FIG. 3 is an enlarged cross-sectional view of the peripheral portion of the planetary gear mechanism, which is the main part of the present invention in the planetary ear assembly apparatus of FIG. The planetary gear mechanism portion of FIGS. 1 and 3 is shown as a view of the BB cross section of FIG. 2 viewed in the direction of the arrow, and FIG. 2 shows the AA cross section of FIG. 1 in the direction of the arrow. It is shown as a figure seen in However, in FIG. 2, pulleys and the like to be described later that are not originally shown are indicated by virtual lines for reference. Further, in FIG. 3, a bobbin holder described later shown in FIG. 1 is omitted.

A planetary ear assembly device 1 to which the present invention is applied includes a rotating shaft 2 as a central axis, a planet carrier 3, a sun gear forming member 4 including a sun gear 41, a pair of planetary gears 5, 5, a pair of relay gears 6, 6 and a pair of bobbin holders BH. The bobbin holder BH is a known one disclosed in, for example, Japanese Patent Application Laid-Open No. 9-137334. Therefore, below, the description regarding a bobbin holder is abbreviate | omitted. In the following description, the front (front side) refers to the bobbin holder BH side (right side of the drawing in FIG. 1) in the axial direction of the rotary shaft 2, and the rear (rear side) refers to the side opposite to the bobbin holder BH (FIG. 1). Left side of the drawing). Further, the axial direction refers to a direction (regardless of the direction) parallel to the central axis (rotational axis) of the rotary shaft 2, and the radial direction refers to a direction orthogonal to the axial direction.

As described above, in the present embodiment, the central axis referred to in the present invention is provided as the rotary shaft 2 that is rotationally driven. The rotating shaft 2 passes through a through hole 44 formed in the sun gear forming member 4 and is rotatably supported in the through hole 44 with respect to the sun gear forming member 4 via a bearing. The planetary carrier 3 is not directly rotated by the meshing drive gear, but is supported so as not to rotate relative to the rotating shaft 2 and indirectly driven via the rotating shaft 2. It has become.

The sun gear forming member 4 is a portion located on the front side and is a gear portion having gear teeth formed on the outer peripheral portion, a shaft portion 42 extending rearward from the sun gear 41, and a radius from the shaft portion 42. And a flange portion 43 formed so as to expand radially in the direction. The through hole 44 is formed through the shaft portion 42 and the sun gear 41. In the through hole 44, an oil seal 46, which is a contact seal member, is interposed in the gap between the inner peripheral surface of the through hole 44 and the rotary shaft 2 at the rear end. Incidentally, the oil seal 46 shown in the figure is known per se and is press-fitted and fixed to the inner peripheral surface of the through hole 44 on the outer peripheral surface thereof, and the seal lip portion etc. on the inner peripheral surface side of the rotary shaft 2 It is in pressure contact with the outer peripheral surface. When the rotary shaft 2 rotates, the outer peripheral surface of the rotary shaft 2 slides with respect to the oil seal 46.

A gear cover 7 is attached to the sun gear forming member 4. The gear cover 7 is provided so as to surround the planetary gear mechanism including the sun gear 41, the planetary gears 5 and 5, the gear train 19 including the relay gears 6 and 6, and the planetary carrier 3. The gear cover 7 has a through hole 74 into which the shaft portion 42 of the sun gear forming member 4 is inserted. The through hole 74 and the shaft portion 42 of the sun gear forming member 4 are fitted together, and a flange is formed. It is integrally fixed to the sun gear forming member 4 by a screw member 45 screwed through the flange portion 43 while being in contact with the front surface of the portion 43.

The sun gear forming member 4 and the gear cover 7 integrated as described above are supported by the support bracket 11. The support bracket 11 is erected on the upper surface of a stay or the like that is installed between the frames of a loom (not shown), and has a box shape so as to accommodate a drive mechanism described later. The sun gear forming member 4 and the gear cover 7 have the flange 43 of the sun gear forming member 4 fitted into a through hole formed in the front side wall of the support bracket 11 and the rear surface around the through hole 74 of the gear cover 7. Is fixed to the support bracket 11 by a plurality of screw members (not shown) screwed through the front side wall of the support bracket 11 while being positioned in contact with the outer wall surface around the through hole of the support bracket 11. Has been. Accordingly, the sun gear forming member 4 (sun gear 41) is in a state of being non-rotatable in the planetary ear assembly device 1, and the gear cover 7 is also integrated with the sun gear forming member 4. Cannot rotate.

In the illustrated example, the planetary carrier 3 has a main body 31 as a main body, and has a flange portion 32 that radially expands at the front end of the main body 31 in the radial direction. The main body 31 has a disk shape with a rim formed on the outer periphery, and a through hole 31a into which the rotary shaft 2 is inserted is formed at the center. Further, in the illustrated example, the diameter of the main body 31 is the diameter of a circular locus drawn by the tip of the tooth portion of the planetary gear as the planetary gear revolves, that is, a straight line passing through the centers of the planetary gears and each planetary gear. The distance between the outer intersections of each planetary gear among the points (intersections) intersecting with the outer edges of the tooth portions (hereinafter referred to as “distance between teeth ends”) is larger.

Furthermore, in the planetary carrier 3, the part where the through hole 31a is formed (the part into which the rotating shaft 2 is fitted) and the part where the support shaft for supporting the planetary gear 5 and the like to be described later are supported compared to the other parts. It is formed as a thick boss. The through hole 31a into which the rotary shaft 2 is inserted is formed with a key groove 31d into which the key 23 attached to the rotary shaft 2 is fitted. Therefore, the planet carrier 3 is not rotatable relative to the rotating shaft 2 and is supported so as to be rotatable together with the rotating shaft 2 with respect to the sun gear forming member 4. That is, the planet carrier 3 is provided in the planetary ear assembly apparatus 1 so as to be rotatable around the axis of the rotation axis (center axis) 2, and is integrated with the planet carrier 3 and the planet carrier 3. The rotating body referred to in the present invention is constituted by the rotating shaft 2 that rotates.

The planet carrier 3 supports two pairs of support shafts 51, 51 and 61, 61, each of which is a pair and is disposed at a symmetrical position with respect to the axis of the rotation shaft.

Each of the pair of support shafts 51, 51 has a bobbin holder BH attached to one end thereof, penetrates the planet carrier 3, and supports the planetary gear 5 on the other end side. Each support shaft 51 supports the bobbin holder BH and the planetary gear 5 in a relatively non-rotatable manner, and is supported rotatably on the planetary carrier 3 via a bearing. Therefore, each bobbin holder BH and each planetary gear 5 are in a state of being rotatably supported by the planet carrier 3 via the support shaft 51. In addition, in the through hole 31b through which the support shaft 51 of the planetary carrier 3 is inserted, an oil seal which is a contact-type seal member between the inner peripheral surface of the through hole 31b and the support shaft 51 at the front end. 52 is interposed. Incidentally, the oil seal 52 shown in the figure is the same as the oil seal 46 described above, and the outer peripheral surface thereof is press-fitted and fixed to the inner peripheral surface of the through hole 31b, and the seal lip portion on the inner peripheral surface side is supported. The shaft 51 is in pressure contact with the outer peripheral surface. As the planetary gear 5 rotates, the outer peripheral surface of the support shaft 51 slides with respect to the oil seal 52.

The planetary gears 5 and 5 are arranged at positions where they are not engaged with the sun gear 41 of the sun gear forming member 4 while being supported by the support shaft 51. In other words, the arrangement of the support shaft 51 on the planet carrier 3 is such that the distance between the axes of the rotation shaft 2 and the axis of the sun gear 41 and the planet gear 5 is larger than the combined dimension. Set to position.

Further, the pair of support shafts 61 and 61 are for supporting the relay gear 6. Each support shaft 61 is supported by being inserted into a through-hole 31c formed in the planet carrier 3 at a position where the relay gear 6 supported thereby engages with both the sun gear 41 and the planetary gear 5. . Each support shaft 61 is supported so as not to rotate with respect to the planet carrier 3, and the relay gear 6 is rotatably supported with respect to the support shaft 61 via a bearing. Therefore, the relay gear 6 is also rotatably supported with respect to the planet carrier 3 via the support shaft 61.

In the planetary gear mechanism configured as described above, the planet carrier 3 is driven to rotate about the axis of the rotation shaft 2, so that a pair of the planet carrier 3 supported by the planet carrier 3 at a position eccentric from the axis of the rotation shaft 2. The planetary gears 5 and 5 and the relay gears 6 and 6 revolve around the axis of the rotary shaft 2. At that time, each relay gear 6 revolves in a state of meshing with the sun gear 41, and therefore rotates around the axis of the support shaft 61 along with the revolution. As a result, the planetary gear 5 that meshes with the relay gear 6 also rotates (spins) the support shaft 51 around the axis as the relay gear 6 rotates. As a result, the bobbin holder BH attached to the support shaft 51 that supports the planetary gear 5 in a relatively non-rotatable manner performs a planetary motion that rotates and revolves around the axis of the rotation shaft 2 as the planet carrier 3 rotates.

As described above, as a drive mechanism for rotating the rotary shaft 2 to cause the bobbin holder BH to perform a planetary motion, in the illustrated example, the rotation of the drive shaft 12 that rotates using the main shaft (primary motor) of the loom (not shown) as a drive source. Is used to transmit to the rotating shaft 2. Specifically, a driven pulley 13 is assembled so that the rear end portion thereof is not rotatable relative to the rotating shaft 2, and the driven pulley 13 is connected to a driving pulley 14 provided on the driving shaft 12 by a timing belt 16. ing. Accordingly, the rotation of the drive shaft 12 is transmitted to the rotation shaft 2 via the drive pulley 14, the timing belt 16 and the driven pulley 13, and the rotation shaft 2 is driven to rotate, thereby rotating the planet carrier 3.

Incidentally, in the illustrated drive mechanism, the drive shaft 12 passes through the support bracket 11 via a bearing bush. Further, the drive pulley 14 is attached to the drive shaft 12 via a pulley support member 14a that can be fixed at an arbitrary position in the axial direction of the drive shaft 12 by a cleaving structure. It is provided in a state of being aligned with the axis.

Further, as described above, the rotary shaft 2 is supported via a bearing with respect to the sun gear forming member 4 fixed to the support bracket 11 via the gear cover 7. It is also supported by the bearing at the position of the driven pulley 13 in the axial direction.

Specifically, the driven pulley 13 is formed with a ring-shaped groove 13a that opens to the rear side between a base portion fitted to the rotary shaft 2 and an outer peripheral portion around which the timing belt 16 is wound. At the rear end of the support bracket 11, a bearing case 15 having a cylindrical portion 15a extending to the front side (pulley side) is attached. Further, the cylindrical portion 15 a of the bearing case 15 is in a state of entering the groove 13 a of the driven pulley 13 in a state where the bearing case 15 is assembled to the support bracket 11. A bearing is interposed between the inner peripheral surface of the cylindrical portion 15 a of the bearing case 15 and the outer peripheral surface of the base portion of the driven pulley 13, so that the rotary shaft 2 is supported via the driven pulley 13. ing.

Further, in the illustrated planetary ear assembly device 1, in order to lubricate the gear train 19 including the sun gear 41, the planetary gears 5, 5 and the relay gears 6, 6, the space in which the gear train 19 is accommodated is liquid-tight. The sealed space is maintained, and lubricating oil (mechanical oil) MO is stored in the accommodation space RS to form an oil bath. In the illustrated configuration, a space (accommodating space RS) for accommodating the gear train 19 is mainly defined by the planetary carrier 3 and the gear cover 7.

The gear cover 7 is a disc-shaped rear wall that radially expands radially from the shaft portion 42 of the sun gear forming member 4 fitted in the through hole 74, and the distance between the tooth ends of the planetary gears 5 and 5 having a pair of outer peripheral diameters. A rear wall 71 larger than the rear wall 71 and a cylindrical outer wall 72 extending forward from the outer peripheral portion of the rear wall 71 are integrally formed. Further, the outer peripheral wall 72 of the gear cover 7 extends to the vicinity of the flange portion 32 of the planet carrier 3 and is enlarged in diameter beyond the gear train 19 to form a small diameter portion 72a and a large diameter portion 72b. Yes. In this way, the gear cover 7 has a cylindrical shape with the rear surface substantially closed and the front surface opened, and surrounds the outer periphery of the gear train 19 with the outer peripheral wall 72 (small diameter portion 72a). Therefore, the gear train 19 is housed in a space surrounded by the rear wall 71 of the gear cover 7 and the small diameter portion 72 a of the outer peripheral wall 72.

A through hole 74 is formed in the gear cover 7 itself, and the shaft portion 42 of the sun gear forming member 4 is fitted into the through hole 74, and the through hole 74 is closed by the sun gear forming member 4. Has been. Further, the sun gear forming member 4 is also formed with a through hole 44 through which the rotary shaft 2 penetrates and the rotary shaft 2 is supported via a bearing. 2, an oil seal 46 is interposed in the gap, and the gap around the rotary shaft 2 in the through hole 44 is closed by the oil seal 46, and the sealing performance to the outside is maintained. Accordingly, the accommodation space RS communicates with the through hole 44, but the space on the accommodation space RS side in the through hole 44 is sealed from the outside, and as a result, the sealed state of the accommodation space RS is also maintained. Have

In addition, since the front surface of the accommodation space RS is open, the space defined only by the gear cover 7 is opened forward. However, as shown in the figure, the planet carrier 3 is arranged on the front side in the region surrounded by the outer peripheral wall 72 of the gear cover 7, so that it is surrounded by the large diameter portion 72 b that is the open region of the front portion of the gear cover 7. Most of the area is occluded by the planet carrier 3. Thus, the housing space RS for housing the gear train 19 is a region between the front surface 71a of the rear wall 71 of the gear cover 7 and the rear surface 31f of the main body 31 of the planet carrier 3 facing it, and the outer peripheral wall of the gear cover 7. 72 is a space in a region surrounded by the inner peripheral surface 73 of the reference numeral 72.

The planet carrier 3 also has a through hole 31b through which the support shaft 51 that supports the bobbin holder BH and the like is penetrated and the support shaft 51 is supported through a bearing. Similar to the hole 44, the gap with the support shaft 51 is closed by an oil seal 52 provided at the front end thereof. Therefore, the sealed state of the accommodation space RS is maintained. Further, a sealing member such as an O-ring is interposed between the rotating shaft 2 and the through hole 31a of the planet carrier 3 into which the rotating shaft 2 is inserted, and seals the gap between them. Similarly, a seal member such as an O-ring is also interposed between the support shaft 61 and the through hole 31c into which the support shaft 61 that supports the relay gear 6 is inserted, and seals the gap between the two.

Furthermore, a large-diameter oil seal 91 is interposed in the gap between the planet carrier 3 and the gear cover 7 in order to make the area of the accommodation space RS hermetically sealed from the outside. That is, when the planetary carrier 3 is arranged in the inner region of the gear cover 7 as described above, the planetary carrier 3 is driven to rotate at a high speed, and therefore it is necessary to form a gap between the planetary carrier 3 and the fixed gear cover 7. is there. Therefore, the accommodation space RS is in a state of communicating with the outside through a gap between the planet carrier 3 and the gear cover 7. Therefore, in order to close the gap and to close the accommodation space RS, as shown in the figure, the gap between the planet carrier 3 and the gear cover 7, that is, the outer peripheral surface 31g of the planet carrier 3 and the outer peripheral surface 31g are formed. An oil seal 91 that is a contact type seal member is interposed between the outer peripheral wall 72 (large diameter portion 72b) of the surrounding gear cover 7 and the inner peripheral surface 73 (73a).

Incidentally, in the configuration shown in the figure, the gear cover 7 is formed as a large diameter portion 72b having a larger diameter than the small diameter portion 72a in which the portion of the outer peripheral wall 72 surrounding the planetary carrier 3 surrounds the gear train 19. The gap between the outer peripheral surface 31g of the planet carrier 3 and the inner peripheral surface 73a of the portion surrounding the planet carrier 3 (large diameter portion 72b) on the outer peripheral wall 72 is increased. An oil seal 91 is interposed in the space thus formed. The oil seal 91 is similar to the oil seals 46 and 52 described above, and is press-fitted and fixed to the inner peripheral surface 73a of the large-diameter portion 72b of the gear cover 7, and the seal lip portion on the inner peripheral surface side and the like are planetary. It is in pressure contact with the carrier 3. The planet carrier 3 slides with respect to the oil seal 91 on the outer peripheral surface as the planet carrier 3 rotates.

Thus, in the illustrated planetary ear assembly device 1, the accommodation space RS that accommodates the gear train 19 including the sun gear 41, the planetary gears 5, 5 and the relay gears 6, 6 is liquid-tight by the oil seal 91 or the like. It is a maintained sealed space, and lubricating oil (mechanical oil) MO as a lubricant is stored in the accommodation space RS to form an oil bath. The lubricating oil MO is supplied from an oil supply port (not shown) provided on the outer peripheral wall 72 of the gear cover 7.

In the planetary ear assembly device 1 of the present embodiment having the above-described configuration, the oil seal 91 corresponds to the resistance applying member in the present invention. That is, the oil seal 91 is more specifically opposed to the inner peripheral surface 73 of the gear cover 7 that is a fixed portion (non-rotating portion) of the planetary ear assembly device 1, and more specifically, a gear cover that faces (facing) the outer peripheral surface 31 g of the planet carrier 3. The outer peripheral wall 72 of the large-diameter portion 72b of the outer peripheral wall 72 is press-fitted and fixed on the outer peripheral surface so as not to rotate relative to the gear cover 7. The outer peripheral surface 31g of the planetary carrier 3 as a part is in contact (pressure contact) over the entire periphery.

Therefore, when the planet carrier 3 is driven to rotate, the planet carrier 3 slides on the outer peripheral surface 31g with respect to the oil seal 91 and rotates in a state in which a rotational resistance corresponding to the contact pressure received from the oil seal 91 is applied. To do. As a result, even if the rotational speed of the drive shaft 12 fluctuates during one rotation, the rotational vibration of the planet carrier 3 resulting therefrom is suppressed or absorbed by the application of rotational resistance by the oil seal 91. Collisions between the tooth surfaces at the meshing portion of the gear caused by the rotational vibration of the carrier 3 are alleviated.

In the illustrated configuration, the oil seal 52 is pressed against the support shaft 51 that supports the bobbin holder BH and the like. The oil seal 52 corresponds to the second resistance applying member in the present invention. As described above, the support shaft 51 is supported by the planet carrier 3 and rotates relative to the planet carrier 3. The oil seal 52 is press-fitted and fixed to the through hole 31 b of the planet carrier 3 on the outer peripheral surface thereof, and is provided so as not to rotate relative to the planet carrier 3. The inner peripheral surface of the oil seal 52 is entirely against the outer peripheral surface of the support shaft 51. It is in pressure contact over the circumference. Accordingly, the support shaft 51 rotates in a state where the outer peripheral surface slides with the oil seal 52 at the time of rotation and a rotational resistance according to the contact pressure received from the oil seal 52 is applied. Therefore, even if it is in a state where rotational vibration can occur in the support shaft 51 due to the planetary motion of the bobbin holder BH as described above, the rotational vibration is suppressed or absorbed by the application of rotational resistance by the oil seal 52. .

In the illustrated example, the oil seal 46 is pressed against the entire circumference of the outer peripheral surface of the rotary shaft 2 in the through hole 44 of the sun gear forming member 4 that supports the rotary shaft 2, as in the case of the oil seal 52. is doing. Therefore, the rotating shaft 2 is also subjected to rotational resistance by sliding with the oil seal 46, and it can be said that the oil seal 46 corresponds to the resistance applying member in the present invention. That is, in this case, it can be said that the resistance applying member is also in contact with the rotating shaft 2 corresponding to a part of the rotating body.

However, the sliding portion of the rotating shaft 2 with the oil seal 46 has a small diameter, and the distance from the axis of the rotating shaft 2 to the sliding surface is smaller than the outer peripheral surface 31g of the planet carrier 3 with which the oil seal 91 is in sliding contact. . Accordingly, the area of the sliding surface over the entire circumference is small, and the sliding torque (resistance torque) due to the sliding resistance is small. Therefore, although the rotational resistance that can be imparted to the rotary shaft 2 by the oil seal 46 that is a resistance imparting member is small, in comparison with the conventional technology that does not include such a resistance imparting member, the oil carrier 46 also provides the planet carrier 3 with a resistance. It can be said that there is an effect of suppressing rotational vibration.

In addition, about the resistance provision member which slidably contacts with a rotary body, it is also considered to employ | adopt a member with a high friction coefficient so that desired rotational resistance can be provided also in a part with a small diameter like the said rotating shaft 2. FIG. However, in such a case, wear due to sliding with the rotating body becomes severe, and the amount of heat generated increases with sliding, so that the resistance applying member itself is damaged early.

On the other hand, the oil seal 91 is in sliding contact with the outer peripheral surface 31g of the planetary carrier 3 having a large diameter over the entire circumference, so that the distance from the rotation center of the planetary carrier 3 to the sliding surface is large, and The area of the sliding surface is large. Therefore, the sliding torque due to the sliding resistance (rotational resistance) acting on the planet carrier 3 with the sliding of the outer peripheral surface 31g of the planet carrier 3 and the oil seal 91 becomes large, and the rotational vibration of the planet carrier 3 is suppressed. Is done more effectively. As described above, it is effective that the resistance applying member is in contact with the rotating body in a wider range such as the outer peripheral surface, and is also in contact with the rotating body at a position further away from the central axis of the central axis. Can be said to be effective.

Moreover, in the illustrated example, the oil seals 46 and 91 for forming the oil bath function as a resistance imparting member. In other words, the resistance imparting member that is in sliding contact with the rotating body is an oil bath containing space. It is exposed to the RS and exposed to the stored lubricant oil MO or the lubricant oil MO that is scraped and scattered by the rotation of the gear. According to such a configuration, since the lubricating oil MO is also supplied to the oil seals 46 and 91 as the resistance imparting members, wear and heat generation due to sliding with the rotating body can be suppressed.

In addition, a disc-shaped member having a large diameter is attached to the rotating shaft 2 separately from the planet carrier 3 so as not to rotate relative to the rotating shaft 2, and rotational resistance is applied to the outer peripheral surface of the disc-shaped member. With respect to the function of suppressing the rotational vibration of the carrier 3, an effect close to that of providing a rotational resistance to the outer peripheral surface 31g of the planetary carrier 3 can be obtained.

Furthermore, the oil seals 46 and 91 used as resistance imparting members in the illustrated example are elastically deformable in the radial direction, and such oil seals 46 and 91 are provided with respect to the rotating shaft 2 and the planet carrier 31. The contact is made over the entire circumference in a state where the contact pressure in the radial direction is applied. According to these configurations, since the radial vibration generated in the planetary carrier 3 due to the vibration of the loom described above is absorbed and suppressed by the oil seals 46 and 91, the bobbin holder BH due to the radial vibration of the planetary carrier 3 is suppressed. Etc. can be prevented. In this manner, the oil seals 46 and 91 as resistance imparting members not only impart rotational resistance to the planet carrier 3 but also have a buffer function that absorbs and suppresses radial vibrations of the planet carrier 3. . In particular, the oil seal 91 is in contact with the outer peripheral surface 31g of the planet carrier 3 and supports the planet carrier 3 at a position closer to the bobbin holder BH, which is a heavy object, so that the effect of suppressing radial vibration of the planet carrier 3 is suppressed. It can be said that it is higher.

Similarly, the oil seal 52 functioning as the second resistance applying member is also elastically deformable in the radial direction, and extends over the entire circumference in a state in which the contact pressure in the radial direction is applied to the support shaft 51. Are in contact. Therefore, the oil seal 52 also has a buffering function that suppresses vibration in the radial direction of the support shaft 51 caused by the planetary motion of the bobbin holder BH.

In the planetary ear assembly device 1 of the embodiment described above, the planet carrier 3 is supported so as not to rotate relative to the rotation shaft, and the planet carrier 3 is rotated by rotationally driving the rotation shaft. The planetary ear assembly device to which is applied is not limited to this, and as shown in FIGS. 4 and 5, the planet carrier 3 may be directly rotationally driven. 4 is a side cross-sectional view showing only the planetary gear mechanism and its peripheral portion in the planetary ear assembly device, and FIG. 5 is a view of the CC cross section in FIG. 4 as viewed in the direction of the arrow.

4 and 5, the sun gear forming member 4 has a shaft portion 47 that extends forward from the sun gear 41 with the sun gear 41 and the central axis line aligned. The planetary carrier 3 is rotatably supported by the shaft portion 47 via a bearing. That is, in the illustrated configuration, the planet carrier 3 is rotatably supported with respect to the fixed central axis. Therefore, unlike the previous embodiment, the sun gear forming member 4 is not formed with a through hole through which the shaft or the like passes.

Further, in the illustrated configuration, the planet carrier is in the form of a gear having gear teeth (tooth portions) formed on the outer peripheral portion, and is formed as a carrier gear 33. The carrier gear 33 is engaged with the drive gear 17 for rotationally driving the carrier gear 33 with the gear portion 33a. The drive gear 17 is fixed on the drive shaft 12 and is provided so as not to rotate relative to the drive shaft 12.

The gear cover 8 is integrally assembled with the sun gear forming member 4 in the same manner as the gear cover 7 of the previous embodiment. However, in the illustrated example, the gear cover 8 also houses the drive gear 17 that meshes with the carrier gear 33 therein, so that a part of the rear wall 81 is lower than in the previous embodiment. It has been extended. The drive shaft 12 extends through the gear cover 8. Therefore, the rear wall 81 of the gear cover 8 is formed with a through hole 81a through which the drive shaft 12 passes, and this gap is formed in the gap between the inner peripheral surface of the through hole 81a and the drive shaft 12. A sealing member for closing is interposed.

Further, the gear cover 8 has an outer peripheral wall 82 extending forward from the outer peripheral portion of the rear wall 81, and the outer peripheral wall 82 extends to a position beyond the front surface of the gear portion 33 a of the carrier gear 33. In addition, the gear cover 8 has a front wall 83 that covers the front surface of the space that houses the drive gear 17. The front wall 83 is formed so as to cover the front surface of the space surrounded by the outer peripheral wall 82 in a range from the inner peripheral surface 82 a of the outer peripheral wall 82 to between the drive shaft 12 and the carrier gear 33. The front wall 83 is also formed with a through hole 83a through which the drive shaft 12 passes, and a seal member is interposed in the gap between the inner peripheral surface of the through hole 83a and the drive shaft 12. ing.

Further, the carrier gear 33 is formed integrally with the gear portion 33a with a cylindrical portion 33b protruding from the front surface of the gear portion 33a. The cylindrical portion 33b is formed with an outer diameter such that the outer peripheral surface 33c is positioned on the inner side of the outer periphery of the gear portion 33a.

An oil seal 93 that is a contact-type seal member is interposed between the outer peripheral wall 82 of the gear cover 8 and the cylindrical portion 33 b of the carrier gear 33. Specifically, the outer peripheral wall 82 of the gear cover 8 extends forward to a position beyond the gear portion 33 a of the carrier gear 33, and the tip portion of the inner peripheral surface 82 a is a cylindrical portion 33 b of the carrier gear 33. It faces the outer peripheral surface 33c. The oil seal 93 is press-fitted and fixed to the distal end portion of the inner peripheral surface 82a of the outer peripheral wall 82 of the gear cover 8 on the outer peripheral surface, and the inner peripheral surface is provided in pressure contact with the outer peripheral surface 33c of the cylindrical portion 33b. Yes. However, the front wall 83 exists between the tip of the outer peripheral wall 82 of the gear cover 8 and the cylindrical portion 33 b of the carrier gear 33 in the portion where the rear wall 81 is extended to accommodate the drive gear 17. The oil seal 93 is interposed between the inner surface 83b of the front wall 83 and the outer peripheral surface 33c of the cylindrical portion 33b.

4 and 5, the gear train 19 including the sun gear 41 and the like is housed in the housing space RS defined by the gear cover 8, the shaft portion 42 of the sun gear forming member 4, and the carrier gear 33. The housing space RS is a sealed space that is blocked from communication with the outside by an oil seal 93 or the like interposed in a gap between the gear cover 8 and the carrier gear 33. In addition, the lubricating oil MO is stored in the sealed accommodation space RS to form an oil bath. In this configuration, the oil seal 93 functions as a resistance imparting member that imparts rotational resistance to the planet carrier (carrier gear 33), and acts in the same manner as the oil seal 91 in the previous embodiment.

In the configuration shown in the figure, the cylindrical portion 33b of the carrier gear 33 is formed with a smaller diameter than the gear portion 33a located on the gear train 19 side relative to the cylindrical portion 33b, and the tip of the tooth portion of the gear portion 33a. In addition, the oil seal 93 is in pressure contact with the outer peripheral surface 33c located radially inward. However, the cylindrical portion 33b is formed in a shape in which the diameter of the cylindrical portion 33b is increased at a position spaced forward from the gear portion 33a, and a portion having a larger outer diameter than the gear portion 33a (large diameter portion) is formed. It is also possible to adopt a configuration in which an oil seal 93 as a resistance-giving member is pressed against an outer peripheral surface of a large-diameter portion having an outer diameter greater than or equal to the diameter (corresponding to the outer diameter of the main body 31 of the planetary carrier 3 in the previous embodiment). It is. With such a configuration, the resistance imparting member can be brought into contact with the planet carrier at a portion having a larger diameter and closer to the bobbin holder BH, and rotational vibration and radial vibration of the planet carrier can be prevented. The effect of suppressing (absorbing) can be enhanced.

In addition, this invention is not limited to what was demonstrated in the above Example, It can implement also in the aspect changed as follows.

(1) About the structure shown in FIG. 4, the cylindrical part 33b is made to protrude from the rear surface of the carrier gear 33, and it is used as a resistance imparting member on the rear side (for example, around the outer periphery of the gear train 19) from the gear part 33a of the carrier gear 33. It is also possible to arrange an oil seal 93 (FIG. 6). Further, as indicated by a dotted line in FIG. 6, it is assumed that the outer peripheral wall 82 of the gear cover 8 is located radially inside the cylindrical portion 33b, and the inner peripheral surface of the carrier gear 33 (cylindrical portion 33b) and the gear cover 8 (outer peripheral wall 82). It is also possible to interpose an oil seal 93 between the outer peripheral surface of).

As described above, in the present invention, when the rotational resistance is directly applied to the planet carrier, the position of the resistance applying member in the axial direction is not particularly limited, and the fixed portion of the planetary ear assembly device 1 and the rotating body are not limited. Even when the resistance imparting member is interposed between the circumferential surfaces opposed to each other in the radial direction, the resistance imparting member is not limited to the one in contact with the outer circumferential surface of the planet carrier as in the previous embodiment. Furthermore, in the previous embodiment, the oil seal 91 (93), which is a resistance applying member, is fixed to the gear cover 7 (8), which is a fixed portion of the planetary ear assembly device 1, and the resistance applying member and the rotating body rotate relative to each other. However, the present invention is not limited to this, and a configuration in which the resistance applying member is fixed to the rotating body side and the resistance applying member slides with respect to the fixed portion may be employed.

(2) In the previous embodiment, an oil seal is provided for making the housing space into a hermetically sealed state in which the housing space is kept liquid-tight so that the housing space for housing the gear train composed of the sun gear or the like is an oil bath. An example of a planetary ear assembly device has been described, and the case where the oil seal functions as a resistance applying member or a second resistance applying member has been described. However, the planetary ear assembly device assumed by the present invention is configured as such an oil bath. The gear train is not limited to being lubricated by the accommodated storage space, and the gear train may be lubricated with grease. In that case, since the oil seal is omitted, another resistance imparting member may be provided.

In this case, the resistance imparting member and the second resistance imparting member do not have a sliding resistance that is too large to impair the desired rotation of the planet carrier, and that the premature wear and high heat are not generated. Therefore, it is preferable that at least the sliding surface is formed of a member having a low friction coefficient. Incidentally, as such a resistance imparting member, for example, a felt, a resin-made liner bearing material, a gun metal or the like can be considered.

Then, such a member having a low friction coefficient member is attached to one of the fixed part (non-rotating part) or the rotating body (planet carrier, rotating shaft, etc.) of the planetary ear assembly device, and at the desired contact pressure against the other. What is necessary is just to provide so that it may slidably contact. For example, in the planetary ear assembly device 1 of FIG. 1 described in the previous embodiment, when using felt as a resistance imparting member instead of the oil seal 91, the gap between the gear cover 7 and the planet carrier 3 is used. The thickness of the felt may be smaller than that of the felt, and a felt may be attached to the inner peripheral surface of the gear cover 7 or the outer peripheral surface of the planet carrier 3 to impart rotational resistance to the planet carrier 3. In this case, the radial size of the gap between the gear cover 7 and the planetary carrier 3 may be set in consideration of the thickness of the felt used as the resistance imparting member, and the felt is compressed in the thickness direction. What is necessary is just to set so that the elastic force (contact pressure) which arises may become the magnitude | size which produces desired rotation resistance (sliding resistance) at the time of rotation of the planet carrier 3.

Further, the resistance imparting member and the second resistance imparting member are not limited to those that can be elastically deformed, such as the oil seal of the previous embodiment or the felt, but the liner bearing material, the gun metal, etc. It is also possible to use it. In that case, the resistance applying member is attached to one of the fixed portion or the rotating body via an elastic member such as a spring or rubber, and is supported in a state in which it can be elastically displaced with respect to the one. What is necessary is just to comprise so that the other may be press-contacted.

(3) Even when the resistance applying member and the second resistance applying member provide rotational resistance to the peripheral surface (outer peripheral surface or inner peripheral surface) of the rotating body as in the previous embodiment, the above-described oil seal or the like In this way, it is not necessary to make contact over the entire circumference of the peripheral surface, as long as it is in contact with the peripheral surface of the rotating body at least partially (one place). Further, the resistance applying member does not necessarily have to be in contact with the peripheral surface, and may be in contact with the front surface and / or the rear surface of the planet carrier to provide rotational resistance. For example, in the planetary ear assembly apparatus shown in FIG. 1, a resistance applying member is interposed between the flange portion 32 of the planet carrier 3 and the inner surface of the outer peripheral wall 72 of the gear cover 7 facing the flange portion 32 in the axial direction. May be.

As described above, even when the resistance applying member is in contact with the rotating body at only one place, the effect of suppressing the above-described radial vibration can be obtained. That is, since the resistance applying member is elastically pressed against the rotating body, at least a part of the radial vibration (vibration component in one direction) is absorbed and suppressed by the resistance applying member. It can be said that the effect of suppressing radial vibration is higher than that of a conventional apparatus that does not include an imparting member.

However, the radial vibration of the planet carrier caused by the vibration of the loom is not a vibration in only one direction, but a composite vibration is generated by a horizontal vibration and a vertical vibration by a striking operation and an opening motion. Therefore, in order to suppress radial vibration more effectively, it is preferable that the resistance applying member is brought into contact with the outer peripheral surface of the rotating body at a plurality of positions, and the rotation applying body is arranged at equal intervals around the rotating body at three or more positions. More preferably. However, if it is only necessary to suppress vibration in a specific direction, it may be provided only at two locations facing each other across the central axis in that direction.

Thus, the resistance imparting member of the present invention has not only the effect of suppressing the rotational vibration of the planet carrier, but also the effect of suppressing the radial vibration of the planet carrier. Therefore, the resistance applying device according to the present invention can be configured only with the expectation of such a radial vibration suppressing effect.

(4) In the previous embodiment, the resistance applying member is fixed to one of the fixed portion or the rotating body, and slides with the other in accordance with relative rotation with the other. It is good also as a structure which is not fixed to either of a rotary body. For example, in the case of a resistance imparting member such as the felt described above, it is interposed between the two in a state where it is pressed against both without being fixed to either the fixed part or the rotating body, and both are accompanied by the rotation of the rotating body. It is also possible to have a configuration that slides relative to.

In addition, the resistance applying member may be one or more rolling elements (rollers or the like) that are provided in contact with the outer peripheral surface of the rotating body and rotate by the rotation of the rotating body. Specifically, the rolling element provided rotatably at a predetermined position around the rotating body is provided in contact with the rotating body so as not to slide. As a result, the rolling element is rotated in accordance with the rotation of the rotating body, so that the force for rotating the rolling element acts on the rotating body as a rotational resistance. In addition, the effect of suppressing the above-mentioned radial vibration can be obtained by using a rolling roller that is elastically deformable in the radial direction.

(5) In the previous embodiment, the drive shaft 12 is assumed to be driven by the main shaft of the loom. However, the planetary ear assembly device to which the present invention is applied is not limited to this, and the drive shaft 12 is a dedicated drive. It may be driven by a motor. Further, the rotary shaft 2 in the previous embodiment may be directly driven by a dedicated drive motor. Even when the planetary ear assembly device (rotating body) is driven by a dedicated drive motor, the drive motor is not simply driven to rotate at a constant speed, but is used for the operation of other devices of the loom. In general, rotation is controlled so as to synchronize with the rotation of the main shaft. Therefore, in the planetary ear assembly apparatus using a dedicated drive motor as a drive source, the present invention operates effectively because rotational vibration is generated in the planet carrier as in the case where the main shaft is used as the drive source.

Furthermore, the present invention is not limited to any of the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

The partial cross section side view which shows one Embodiment of the planetary ear assembly apparatus with which this invention is applied The rear view by the AA cross section of the planetary ear assembly apparatus shown in FIG. Sectional side view by the BB cross section of the principal part of the planetary ear assembly shown in FIG. The partial cross section side view which shows the principal part of other embodiment of the planetary ear assembly apparatus by this invention The rear view by the CC cross section of the planetary ear assembly apparatus principal part shown in FIG. The partial cross section side view which shows the principal part of other embodiment of the planetary ear assembly apparatus by this invention

Explanation of symbols

1 Planetary ear assembly device (Planet gear type ear assembly device)
12 Drive shaft 13 Driven pulley 14 Drive pulley 16 Timing belt 17 Drive gear 19 Gear train 2 Rotating shaft (central shaft)
3 Planetary Carrier 32 Flange 33 Carrier Gear (Planet Carrier)
33b Cylindrical portion 4 Sun gear forming member 41 Sun gear 42 Shaft portion 43 Flange portion 46 Oil seal (resistance imparting member)
5 planetary gear 51 support shaft 52 oil seal (second resistance applying member)
6 Relay gear 61 Support shaft 7 Gear cover 8 Gear cover 91, 93 Oil seal (resistance imparting member)
RS Housing space MO Lubricant

Claims (4)

A planetary gear-type ear assembly device used in a loom, which is a planetary carrier rotatably provided around a central axis of a central axis, and rotates a pair of support shafts in a symmetrical arrangement with respect to the central axis. Each of a planetary carrier including a disk-shaped support disk that is freely supported, a sun gear that is coaxially disposed with the planetary carrier and provided so as not to rotate, and a pair of support shafts each having a bobbin holder fixed to one end thereof In a planetary gear-type ear assembly device including a planetary gear attached to the other end and a pair of planetary gears indirectly meshed with the sun gear,
A rotating body that rotates about the axis of the central axis as a rotation center, and includes a resistance applying member that abuts on the rotating body including the planet carrier and applies rotational resistance to the rotating body;
A planetary gear type ear assembly device in a loom characterized by the above. The resistance applying member contacts the rotating body at two or more locations with respect to the outer peripheral surface of the rotating body.
The planetary gear-type ear assembly device in the loom according to claim 1. The resistance applying member is in contact with the outer peripheral surface of the rotating body over the entire circumference.
The planetary gear-type ear assembly device in the loom according to claim 1. A second resistance imparting member in contact with the support shaft;
The planetary ear assembly device in a loom according to any one of claims 1 to 3, wherein the planetary ear assembly device is a loom.

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