WO2023140176A1 - 変速機 - Google Patents

変速機 Download PDF

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Publication number
WO2023140176A1
WO2023140176A1 PCT/JP2023/000692 JP2023000692W WO2023140176A1 WO 2023140176 A1 WO2023140176 A1 WO 2023140176A1 JP 2023000692 W JP2023000692 W JP 2023000692W WO 2023140176 A1 WO2023140176 A1 WO 2023140176A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
plug
transmission
transmission mechanism
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/000692
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English (en)
French (fr)
Japanese (ja)
Inventor
健司 鈴木
淳 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
KYB Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KYB Corp filed Critical KYB Corp
Publication of WO2023140176A1 publication Critical patent/WO2023140176A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes

Definitions

  • the present invention relates to a transmission.
  • JP2017-116055A discloses a transmission that includes a fixed housing that houses a hydraulic motor, a speed change mechanism that changes the speed of the output rotation of the shaft of the hydraulic motor, a rotary housing that houses the speed change mechanism and rotates when the changed output rotation is transmitted, and a cover that closes the open end of the rotary housing.
  • the transmission mechanism described in Patent Document 1 is a planetary gear mechanism, and includes a sun gear provided on the shaft of a hydraulic motor, an inner gear provided on the inner wall of a rotating housing, and a plurality of planetary gears meshing with both the sun gear and the inner gear.
  • An object of the present invention is to facilitate wear confirmation and replacement of members in a transmission that receive a load from a transmission mechanism.
  • the transmission comprises: a transmission mechanism that is connected to a drive source and that changes the output rotation of the drive source; a cylindrical rotary housing that accommodates the transmission mechanism and rotates by transmitting the changed output rotation; a cover that is provided at an opening end of the rotation housing that opens on the side opposite to the drive source with respect to the transmission mechanism and closes the open end; a plug provided in the cover, the plug protruding from the cover toward the plate and capable of supporting a thrust load acting on the plate from the transmission mechanism.
  • FIG. 1 is a cross-sectional view of a transmission-equipped motor having a transmission according to a first embodiment of the present invention.
  • a transmission 100 according to the present embodiment of the present invention and a transmission-equipped motor 101 as a driving device including the same will be described below with reference to the drawings.
  • the transmission-equipped motor 101 is used, for example, as a traveling motor that is provided on the axle of a crawler-type work machine such as a hydraulic excavator and drives a crawler belt. As shown in FIG. 1, the transmission-equipped motor 101 includes a hydraulic motor 20 as a drive source, and a transmission 100 connected to a motor shaft (not shown) of the hydraulic motor 20 to reduce the output rotation of the motor shaft.
  • the transmission 100 includes: a transmission mechanism 40 that changes the speed of the output rotation of the hydraulic motor 20; a fixed housing 10 that houses the hydraulic motor 20; a cylindrical rotary housing 15 that houses the transmission mechanism 40 and rotates when the changed output rotation is transmitted;
  • the transmission mechanism 40 is a planetary gear mechanism, and the specific configuration will be described later.
  • the stationary housing 10 , the rotating housing 15 and the cover 50 form the housing 1 of the transmission 100 .
  • the rotating housing 15 rotates with respect to the stationary housing 10 .
  • the open end 15a of the rotary housing 15 is the end of the rotary housing 15 that opens on the side opposite to the hydraulic motor 20 with respect to the transmission mechanism 40 (the right side in FIG. 1).
  • a sprocket (not shown) is connected to the outer peripheral surface of the rotary housing 15 .
  • a crawler belt (not shown) that meshes with the sprocket circulates and the vehicle runs.
  • the fixed housing 10 and the rotating housing 15 are arranged inside the path along which the crawler belt circulates.
  • the rotating housing 15 is rotatably supported via a bearing 3 to a fixed housing 10 connected to a vehicle body 102 as an external member, and rotates about its central axis.
  • the fixed housing 10 has a fixed flange portion 12 that protrudes from the outer peripheral surface of the body portion 11 and is attached to the vehicle body 102 .
  • the cover 50 is disc-shaped and attached to the inner peripheral surface of the open end 15 a of the rotary housing 15 .
  • a plug 54 a is provided in the center of the cover 50 . Specific configurations of the cover 50 and the plug 54a will be described later in detail.
  • a gear chamber 4 that accommodates the transmission mechanism 40 is defined by the inner surface of the rotary housing 15, the outer surface of the main body portion 11 of the fixed housing 10, and the inner surface of the cover 50.
  • the gear chamber 4 is filled with lubricating oil as a lubricant capable of lubricating the transmission mechanism 40 .
  • the rotating housing 15 is formed with a rotating flange portion 16 that protrudes annularly from the outer peripheral surface.
  • the sprocket is fastened to the rotary flange portion 16 by a plurality of bolts (not shown) and rotates together with the rotary housing 15 .
  • a floating seal 5 is provided between the fixed housing 10 and the rotating housing 15 .
  • the floating seal 5 seals hydraulic oil in the transmission 100 so that it does not leak to the outside and prevents foreign matter from entering the transmission 100 from the outside when the rotary housing 15 rotates.
  • a labyrinth seal 6 is formed between the fixed housing 10 and the rotary housing 15 to prevent foreign matter such as mud from entering the outside of the floating seal 5 .
  • the labyrinth seal 6 is formed by the gap between the opposing end faces of the fixed housing 10 and the rotary housing 15 .
  • the hydraulic motor 20 is provided inside the body portion 11 of the fixed housing 10 .
  • the hydraulic motor 20 is, for example, a swash plate type piston motor that is rotationally driven by supply and discharge of hydraulic oil (hydraulic fluid).
  • the motor may be other than the hydraulic motor 20 (hydraulic motor), and for example, an electric motor may be used. Since the hydraulic motor 20 can employ a known configuration, it is illustrated in a simplified manner in FIG. 1, and detailed description thereof is omitted in this specification.
  • the transmission 100 includes a drive shaft 31 as a shaft that is coaxially connected to the motor shaft of the hydraulic motor 20 and to which the output rotation of the motor shaft is transmitted.
  • the transmission mechanism 40 reduces the speed of the output rotation of the motor shaft of the hydraulic motor 20 transmitted through the drive shaft 31 and transmits it to the rotation housing 15 .
  • the drive shaft 31 and the motor shaft of the hydraulic motor 20 are connected by, for example, a spline connection. Since the rotation housing 15 and the drive shaft 31 are provided coaxially, hereinafter, the axial direction of the rotation housing 15 and the drive shaft 31 is simply referred to as the "axial direction”, and the radial direction of the rotation housing 15 and the drive shaft 31 is simply referred to as the "radial direction”.
  • the transmission mechanism 40 is a planetary gear mechanism.
  • the transmission mechanism 40 includes a sun gear 41 provided on the drive shaft 31, an inner gear 42 formed on the inner peripheral surface of the rotary housing 15 and extending in the axial direction, a plurality of planetary gears 43 meshing with both the sun gear 41 and the inner gear 42, a planetary carrier 44 supporting each planetary gear 43, a second-stage sun gear 45 meshing with the planetary carrier 44, and a plurality of planetaries meshing with both the sun gear 45 and the inner gear 42.
  • a gear 46 The end surfaces of the drive shaft 31, the sun gear 41, and the planetary gears 43 facing the cover 50 are positioned on the same plane.
  • the drive shaft 31 connected to the motor shaft rotates as the motor shaft rotates.
  • the output rotation of the drive shaft 31 acts on the inner gear 42 through the sun gear 41 and the planetary gear 43 and the second-stage sun gear 45 and the planetary gear 46 , and is transmitted to the rotation housing 15 .
  • the planetary gear 43 and the inner gear 42, and the planetary gear 46 and the inner gear 42 are formed so as to mesh obliquely with respect to the axial direction. Therefore, a thrust load (a load along the axial direction) is generated in the speed change mechanism 40 due to the reaction force of the forces acting on the inner gear 42 from the planetary gears 43 and 46 .
  • the thrust load generated in the transmission mechanism 40 varies depending on the position of the transmission mechanism 40 in the circumferential direction. Specifically, the thrust load acting on each planetary gear 43 differs.
  • the transmission 100 includes a carrier plate 47 as a plate provided on the end surface of the transmission mechanism 40 facing the cover 50.
  • the carrier plate 47 has a function of receiving a thrust load generated in the transmission mechanism 40 and equalizing the thrust load generated in the transmission mechanism 40 .
  • the carrier plate 47 is provided over the end faces of the drive shaft 31 , the sun gear 41 , and each planetary gear 43 facing the cover 50 , and is fixed to each planetary carrier 44 with bolts 49 .
  • the carrier plate 47 may be fixed to each planetary carrier 44 with pins or the like.
  • a thrust load generated in the transmission mechanism 40 acts on a plug 54a provided in the cover 50 via a single carrier plate 47 having a large area. Since the thrust load of the transmission mechanism 40 that the plug 54a receives is uniformed by the carrier plate 47, the carrier plate 47 and the plug 54a are in surface contact without uneven contact. This prevents the carrier plate 47 and the plug 54a from being unevenly worn.
  • the cover 50 has a disk-shaped body portion 51 to which a plug 54a is attached at the center, and an annular mounting portion 52 formed on the outer periphery of the body portion 51 and attached to the inner peripheral surface of the open end portion 15a of the rotary housing 15.
  • the main body portion 51 has a bottom portion 51 a substantially perpendicular to the central axis of the rotary housing 15 and a tapered portion 51 b connecting the bottom portion 51 a and the mounting portion 52 .
  • the body portion 51 is formed in a so-called mortar shape (bottomed conical cylinder shape) with the bottom portion 51a as the bottom.
  • the bottom portion 51a is provided with an oil check port 53a, which will be described later, and a plug 54a is attached to the oil check port 53a.
  • the tapered portion 51 b is annularly provided between the bottom portion 51 a and the mounting portion 52 , and the entire circumference is inclined with respect to the central axis of the rotary housing 15 .
  • the tapered portion 51 b is inclined so that the bottom portion 51 a side is arranged close to the carrier plate 47 .
  • the mounting portion 52 is provided continuously with the tapered portion 51 b of the main body portion 51 and formed substantially perpendicular to the central axis of the rotary housing 15 .
  • the outer peripheral surface of the mounting portion 52 contacts the inner peripheral surface of the open end portion 15 a of the rotary housing 15 .
  • An annular seal groove 50a is formed on the outer peripheral surface of the mounting portion 52 over the entire circumference.
  • An O-ring 70 for sealing between the mounting portion 52 and the inner peripheral surface of the rotary housing 15 is accommodated in the seal groove 50a.
  • a plurality of projecting portions 52 a projecting in the axial direction toward the transmission mechanism 40 are formed at the radially outer end of the mounting portion 52 .
  • the cover 50 is aligned in the axial direction by bringing the projecting portion 52a into contact with the inner gear 42 in the axial direction.
  • the cover 50 closes the open end 15 a of the rotary housing 15 by axially contacting the inner gear 42 at the end (specifically, the projecting portion 52 a of the mounting portion 52 ).
  • the cover 50 does not necessarily have to be attached to the inner peripheral surface of the open end 15a of the rotary housing 15, and may be provided at the open end 15a of the rotary housing 15 to close the open end 15a.
  • the cover 50 is provided with an injection port (not shown) for injecting lubricating oil into the gear chamber 4, an oil check port 53a as a through hole for regulating the amount of lubricating oil, and a discharge port 53b for discharging the lubricating oil in the gear chamber 4 to the outside of the gear chamber 4.
  • the injection port is not shown in FIG.
  • the injection port, the oil check port 53a, and the discharge port 53b pass through the cover 50 in the plate thickness direction.
  • the injection port and the discharge port 53b are provided in the mounting portion 52, and the oil check port 53a is provided in the center of the bottom portion 51a of the body portion 51.
  • the oil check port 53 a is provided coaxially with the drive shaft 31 .
  • the cover 50 is also provided with a plug (not shown) that seals the injection port, a plug 54a that seals the oil check port 53a, and a plug 54b that seals the discharge port 53b.
  • a plug (not shown) that seals the injection port
  • a plug 54a that seals the oil check port 53a
  • a plug 54b that seals the discharge port 53b.
  • the plug 54a is detachably attached to the oil check port 53a by screwing from the opposite side of the carrier plate 47, and seals the oil check port 53a.
  • the plug 54b is detachably attached to the discharge port 53b by screwing from the opposite side of the carrier plate 47 to seal the discharge port 53b. The same is true for plugs that seal injection ports.
  • the transmission 100 is oriented as shown in FIG. 1, and the lubricating oil is injected from the injection port with the plug 54b attached to the discharge port 53b. Then, lubricating oil is injected until the lubricating oil overflows from the oil check port 53a.
  • the oil check port 53a regulates the amount of lubricating oil sealed in the gear chamber 4.
  • the plug 54a attached to the oil check port 53a protrudes from the cover 50 toward the carrier plate 47 and faces the carrier plate 47 with a slight gap. Accordingly, when a thrust load generated in the transmission mechanism 40 acts on the carrier plate 47, the carrier plate 47 contacts and is supported by the plug 54a. At this time, the carrier plate 47 contacts only the plug 54 a and does not contact the cover 50 .
  • the thrust load of the transmission mechanism 40 that the plug 54a receives through the carrier plate 47 is smaller than the threaded connection between the oil check port 53a and the plug 54a. Therefore, even if the plug 54a receives a thrust load generated in the transmission mechanism 40, the plug 54a will not come off from the oil check port 53a.
  • the plug 54 a that receives the thrust load generated by the transmission mechanism 40 is supported by the bottom portion 51 a of the body portion 51 . Therefore, the bottom portion 51a receives a force from the plug 54a in the direction of the thrust load generated in the transmission mechanism 40 (right side in FIG. 1). Since the body portion 51 is formed in a so-called mortar shape with the bottom portion 51 a as the bottom, the bottom portion 51 a is less likely to displace in the direction of the thrust load generated in the transmission mechanism 40 . Therefore, the cover 50 has high strength against the force received from the plug 54a.
  • the tapered portion 51 b of the main body portion 51 of the cover 50 is provided with a holding portion 55 projecting axially toward the carrier plate 47 .
  • the holding portion 55 is provided to hold the cover 50 when the cover 50 is processed.
  • the holding portion 55 may be provided other than the tapered portion 51b. Further, as will be described later, when the cover 50 can be processed while holding the inner peripheral surface of the projecting portion 52a of the mounting portion 52, the holding portion 55 may not be provided.
  • the cover 50 Before being attached to the rotary housing 15, the cover 50 is processed to form an annular seal groove 50a, and is drilled to form an injection port, an oil check port 53a, and a discharge port 53b.
  • the outer peripheral surface of the mounting portion 52 is smoothed, and the contact surface of the projecting portion 52a of the mounting portion 52 with the inner gear 42 is smoothed.
  • smoothing of the outer peripheral surface of the mounting portion 52 and smoothing of the contact surface of the protruding portion 52a of the mounting portion 52 with the inner gear 42 are carried out at once by lathe processing or the like while holding the holding portion 55 or holding the inner peripheral surface of the protruding portion 52a of the mounting portion 52.
  • the surface of the plug 54a facing the carrier plate 47 is smoothed.
  • the plug 54a is subjected to gas nitrocarburizing and cutting before being attached to the oil check port 53a. This reduces the frictional force generated between the carrier plate 47 and the plug 54a.
  • the plug 54 a detachably provided on the cover 50 receives the thrust load generated in the transmission mechanism 40 . Since the plug 54a is attached to the cover 50 by screwing, it can be easily removed from the cover 50. FIG. Therefore, the wear of the plug 54a can be checked only by removing the plug 54a from the cover 50, and if the wear of the plug 54a is large, only the plug 54a needs to be replaced. Therefore, it is possible to easily confirm wear and replace the member that receives the load from the transmission mechanism 40 .
  • the plug 54a receives a large thrust load and wears out more quickly than usual.
  • an abnormality of the transmission mechanism 40 can be checked by periodically checking wear of the plug 54a.
  • the plug 54a can also be used as a jig for detecting an abnormality in the transmission mechanism 40.
  • the plug 54a is an existing one provided in the oil check port 53a for regulating the amount of lubricating oil in the gear chamber 4. In other words, by using the existing plug 54a, it is possible to easily check wear and replace a member that receives a load from the transmission mechanism 40 in the transmission 100 without adding a new component.
  • the body portion 51 of the cover 50 has a bottom portion 51a to which the plug 54a is attached, and a tapered portion 51b that connects the bottom portion 51a and the attachment portion 52 together.
  • the body portion 51 and the carrier plate 47 can face each other while reducing the thickness of the portion (bottom portion 51a) of the body portion 51 to which the plug 54a is attached, compared to the case where the tapered portion 51b is not provided. Therefore, the thickness of the body portion 51 can be reduced, and a plug having a general length can be used as the plug 54a.
  • the axial length of the oil check port 53a is small, the oil check port 53a can be easily machined. Therefore, the manufacturing cost of transmission 100 can be reduced.
  • the inner gear 42 has an axial end portion 42a (right side in FIG. 1) that intersects the radially extended line of the carrier plate 47 .
  • the axial length of the inner gear 42 is set such that the end portion 42 a of the inner gear 42 intersects the radial extension of the carrier plate 47 . That is, the axial length of the inner gear 42 is shortened.
  • the processing time of the inner gear 42 to the rotary housing 15 is shortened, and the manufacturing cost of the transmission 100 can be reduced.
  • the protrusion 52a of the cover 50 axially contacts the end portion 42a of the inner gear 42 and is aligned with the rotary housing 15, the axial length of the inner gear 42 is shortened, so that the overall axial length of the transmission 100 can be reduced. Therefore, the manufacturing cost of transmission 100 can be further reduced.
  • the end surface of the support portion that contacts the carrier plate is smoothed in order to reduce the frictional force generated between the carrier plate and the cover.
  • the cover of the transmission is subjected to the smoothing process performed on the cover 50 (smoothing the outer peripheral surface of the mounting portion 52 and smoothing the contact surface 52b of the projecting portion 52a of the mounting portion 52 with the inner gear 42).
  • the thrust load generated by the transmission mechanism 40 is received by the plug 54a, so smoothing of the supporting portion, which is a part of the cover, is not required. Therefore, smoothing of the cover 50 (smoothing of the outer peripheral surface of the mounting portion 52 and smoothing of the contact surface 52b of the mounting portion 52) can be performed at once without changing the holding position of the cover 50 .
  • the plug 54 a detachably provided on the cover 50 receives the thrust load generated by the transmission mechanism 40 . Therefore, the wear of the plug 54a can be checked only by removing the plug 54a from the cover 50, and if the wear of the plug 54a is large, only the plug 54a needs to be replaced. Therefore, it is possible to easily confirm wear and replace the member that receives the load from the transmission mechanism 40 .
  • the plug 54a is an existing one provided in the oil check port 53a for regulating the amount of lubricating oil in the gear chamber 4, it is possible to easily check wear and replace the member that receives the load from the transmission mechanism 40 in the transmission 100 without adding a new part.
  • the body portion 51 of the cover 50 has the bottom portion 51a to which the plug 54a is attached and the tapered portion 51b that connects the bottom portion 51a and the mounting portion 52. Therefore, the body portion 51 and the carrier plate 47 can face each other while reducing the thickness of the portion of the body portion 51 to which the plug 54a is attached. Therefore, the thickness of the main body portion 51 can be reduced, and a plug having a general length can be used as the plug 54a, so that the manufacturing cost of the transmission 100 can be reduced.
  • the transmission mechanism 40 is a planetary gear mechanism.
  • the transmission mechanism 40 is not limited to this, and may be another gear mechanism, or may be configured by combining a plurality of gear mechanisms.
  • the cover 50 has the main body portion 51 and the mounting portion 52, and the main body portion 51 is formed in a so-called mortar shape having the bottom portion 51a and the tapered portion 51b.
  • the configuration of the cover 50 is not limited to this.
  • the cover 50 may be provided on the inner periphery of the open end 15a of the rotary housing 15 to close the open end 15a, and the plug 54a may project from the cover 50 toward the carrier plate 47 to support the thrust load acting on the carrier plate 47 from the speed change mechanism 40.
  • the plug 54a that receives the thrust load generated in the transmission mechanism 40 is an existing one provided in the oil check port 53a for regulating the amount of lubricating oil in the gear chamber 4.
  • the plug 54 a may be newly added to an existing transmission to receive the thrust load generated in the transmission mechanism 40 .
  • the transmission 100 includes a transmission mechanism 40 that is connected to a hydraulic motor 20 as a driving source and changes the output rotation of the hydraulic motor 20; a cylindrical rotary housing 15 that houses the transmission mechanism 40 and rotates by transmitting the changed output rotation; and a plug 54a detachably provided on the cover 50 from the opposite side of the carrier plate 47.
  • the plug 54a protrudes from the cover 50 toward the carrier plate 47 and can support the thrust load acting on the carrier plate 47 from the transmission mechanism 40.
  • the plug 54 a detachably provided on the cover 50 receives the thrust load generated by the transmission mechanism 40 . Therefore, the wear of the plug 54a can be checked only by removing the plug 54a from the cover 50, and if the wear of the plug 54a is large, only the plug 54a needs to be replaced. Therefore, it is possible to easily confirm wear and replace the member that receives the load from the transmission mechanism 40 .
  • the cover 50 is provided with an oil check port 53a as a through hole for regulating the amount of lubricant that is enclosed in the gear chamber 4 housing the transmission mechanism 40 and can lubricate the transmission mechanism 40, and the plug 54a is detachably provided in the oil check port 53a to seal the oil check port 53a.
  • the plug 54a attached to the oil check port 53a provided in the cover 50 to regulate the amount of lubricant in the gear chamber 4 receives the thrust load generated in the transmission mechanism 40.
  • the existing plug 54a it is possible to easily confirm wear and replace the member that receives the load from the transmission mechanism 40 in the transmission 100 without adding a new configuration.
  • the cover 50 has a body portion 51 to which a plug 54a is attached in the center, and an annular mounting portion 52 formed on the outer circumference of the body portion 51 and attached to the open end portion 15a of the rotary housing 15.
  • the side a is inclined so that it is arranged close to the carrier plate 47 .
  • the body portion 51 of the cover 50 has a bottom portion 51a to which the plug 54a is attached, and a tapered portion 51b that connects the bottom portion 51a and the attachment portion 52 together.
  • the main body portion 51 and the carrier plate 47 can face each other while reducing the thickness of the portion of the main body portion 51 to which the plug 54a is attached compared to the case where the tapered portion 51b is not provided. Therefore, the thickness of the body portion 51 can be reduced, and a plug having a general length can be used as the plug 54a, so that the manufacturing cost of the transmission 100 can be reduced.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
PCT/JP2023/000692 2022-01-19 2023-01-12 変速機 Ceased WO2023140176A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022006333A JP2023105478A (ja) 2022-01-19 2022-01-19 変速機
JP2022-006333 2022-01-19

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WO2023140176A1 true WO2023140176A1 (ja) 2023-07-27

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7540550B2 (ja) * 2022-08-17 2024-08-27 株式会社三洋物産 遊技機
JP7540548B2 (ja) * 2022-08-17 2024-08-27 株式会社三洋物産 遊技機
JP7540549B2 (ja) * 2022-08-17 2024-08-27 株式会社三洋物産 遊技機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017116055A (ja) * 2015-12-25 2017-06-29 Ｋｙｂ株式会社 変速機及び変速機を備えた駆動装置
JP2017150508A (ja) * 2016-02-22 2017-08-31 Ｋｙｂ株式会社 変速機及び変速機を備える駆動装置
JP2021102397A (ja) * 2019-12-25 2021-07-15 株式会社ジェイテクト 操舵装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017116055A (ja) * 2015-12-25 2017-06-29 Ｋｙｂ株式会社 変速機及び変速機を備えた駆動装置
JP2017150508A (ja) * 2016-02-22 2017-08-31 Ｋｙｂ株式会社 変速機及び変速機を備える駆動装置
JP2021102397A (ja) * 2019-12-25 2021-07-15 株式会社ジェイテクト 操舵装置

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