Reducer

Abstract

To provide a speed reducer of which external appearance can be readily checked.SOLUTION: A speed reducer includes: a case; a speed reducing mechanism including a transmission part installed to the case so as to be rotatable and installed in the case so as to output rotation input from a drive source while reducing the speed thereof; and a display part having a shape capable of adhering to a surface of the case and displaying notification information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a reducer. [Background technology]

[0002] A rotating advertising light for vehicles, as described in Patent Document 1, is known. The rotating advertising light for vehicles is equipped with a motor and a reducer in a case, fluorescent lights are provided around the case, the center of a cylindrical rotating advertising light made of a translucent plate that covers the motor, the reducer, and the fluorescent lights is fixed to the upper end of the main shaft of the reducer, and the outside of the cylindrical rotating advertising light is covered with an outer cylinder of a transparent plate. This rotating advertising light for vehicles is said to be able to exert an advertising effect by rotating the advertising light. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 63-081388 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in various objects equipped with a speed reducer, such as the above-mentioned rotating advertising lamp for vehicles, it is often difficult to visually confirm the speed reducer once it is incorporated into the various objects.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide a reducer that can be easily confirmed externally. [Means for solving the problem]

[0006] A reducer according to one embodiment of the present invention comprises a case, a reduction mechanism section provided within the case and having a transmission section rotatably arranged relative to the case, which reduces the speed of rotation input from a drive source and outputs the rotation, and a display section having a shape that can be attached to the surface of the case and displays notification information.

[0007] In the above-described reducer, the display portion may be formed circumferentially on at least a portion of a surface of the case.

[0008] In the above-mentioned reducer, the case may include a main body portion having a cylindrical shape and a flange portion having a shape that protrudes radially outward from the main body portion, and the display portion may be formed on at least a portion of the surface of the flange portion.

[0009] In the above-described reducer, the display unit may be formed on an external mechanism to which the rotation output from the drive source or the transmission unit is input.

[0010] In the above-described reducer, the notification information may be manufacturer information or advertising information of the reducer.

[0011] In the above-described reducer, the notification information may be information relating to a temperature of the reducer.

[0012] In the above-described reducer, the notification information may be information relating to a load of the reducer.

[0013] In the above-described reducer, the notification information may be information relating to a temperature of the external mechanism.

[0014] In the above-described reducer, the notification information may be information relating to a load on the external mechanism.

[0015] In the above-described reducer, the notification information may be information relating to a distance between the reducer and a target object.

[0016] In the above-described reducer, the display unit may switch the content of the notification information.

[0017] In the above-described reducer, the display unit may switch a display area for the notification information.

[0018] The above-described reducer may further include a power generation unit that generates power for operating the display unit.

[0019] In the above-described reduction gear, the display unit may be operated using power supplied from a power supply unit that controls driving power of the driving source.

[0020] A reducer according to one embodiment of the present invention is a gear device that converts rotational speeds at a predetermined rotational speed ratio between a first member and a second member to transmit a driving force, and includes an eccentric portion, an oscillating gear having an insertion hole into which the eccentric portion is inserted and having a tooth portion, a first cylindrical portion configured to be attachable to one of the first member and the second member, and a second cylindrical portion configured to be attachable to the other of the first member and the second member, wherein the first cylindrical portion has internal teeth that mesh with the tooth portion of the oscillating gear, and the second cylindrical portion is disposed radially inside the first cylindrical portion while holding the oscillating gear, and the first cylindrical portion and the second cylindrical portion are concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric portion, a reduction mechanism portion, and a display portion having a shape that can be attached to the surface of the case and that displays notification information.

[0021] A reducer according to one aspect of the present invention includes a first cylindrical portion including a main body having a cylindrical shape and a flange portion having a shape that protrudes radially outward from the main body; a gear device which transmits a driving force by converting rotational speeds between a first member and a second member at a predetermined rotational speed ratio, the gear device comprising: an eccentric portion; an oscillating gear having an insertion hole into which the eccentric portion is inserted and having a tooth portion; the first cylindrical portion configured to be attachable to one of the first member and the second member; and a second cylindrical portion configured to be attachable to the other of the first member and the second member, the first cylindrical portion having internal teeth which mesh with the tooth portion of the oscillating gear, the second cylindrical portion being disposed radially inside the first cylindrical portion while holding the oscillating gear, the first cylindrical portion and the second cylindrical portion being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric portion; and a display portion affixed circumferentially to at least a portion of the surface of the flange portion and displaying manufacturer information or advertising information of the reducer. Effect of the Invention

[0022] According to the above-described speed reducer, the speed reducer can be easily confirmed from its appearance. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2 is a perspective view illustrating an example of a reducer according to the embodiment. [Diagram 2] 1 is a cross-sectional view of a reducer 1 according to an embodiment. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] 1 is a block diagram showing an example of a functional configuration of a reducer 1 according to an embodiment. [Diagram 5] 2A to 2C are diagrams showing examples of mounting a display unit 10 and the like in an embodiment. [Figure 6] FIG. 2 is a top view showing a case flange portion of the reducer in the embodiment. [Figure 7] FIG. 4 is a block diagram showing another example of a reducer in the embodiment. [Figure 8] FIG. 4 is a block diagram showing another example of a reducer in the embodiment. [Figure 9]1 is a perspective view showing an example of an actuator 500 including a reducer 1 and a motor 600 as a drive source in an embodiment. [Figure 10] FIG. 11 is a block diagram showing a functional configuration of a reducer 1 according to a second embodiment. [Figure 11] FIG. 11 is a block diagram showing a configuration example of a reducer according to a third embodiment. [Figure 12] 13A to 13C are diagrams showing an example of how the display unit 10 and the like are attached in the third embodiment. [Figure 13] FIG. 11 is a block diagram showing a configuration example of a reducer according to a third embodiment. [Figure 14] FIG. 13 is a block diagram showing a configuration example of a reducer according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, a reducer and a display device for the reducer according to an embodiment of the present invention will be described in detail with reference to the drawings. In the embodiments described below, the same reference numerals may be used to designate corresponding configurations, and the description may be omitted. In the following description, expressions indicating relative or absolute arrangements, such as "parallel," "orthogonal," "center," and "coaxial," do not only strictly indicate such arrangements, but also indicate a state in which the components are relatively displaced with a tolerance or an angle or distance that provides the same function.

[0025] (First embodiment) [Reducer 1] 1 is a perspective view of a reducer 1 according to a first embodiment. The reducer 1 is provided at a connecting portion (joint portion) of a pair of rotatably connected arms in, for example, an industrial robot. The reducer 1 reduces and outputs motor torque input from a motor (not shown) serving as a power source.

[0026] The reducer 1 includes a case 100 and a reduction mechanism 200. The case 100 includes a main body 102 and a case flange 104. The case flange 104 has a shape that protrudes radially outward from the main body 102. In the description of the embodiment, the direction along the axis O1 of the main body 102 is simply referred to as the axial direction, the direction intersecting the axis O1 as viewed from the axial direction is referred to as the radial direction, and the direction rotating around the axis O1 is referred to as the circumferential direction. In addition, the side to which the drive source is connected to the reducer 1 is referred to as the input side, and the side to which a mechanical unit such as an arm that receives the output of the reducer 1 is connected is referred to as the output side. The drive source is an example of a first member, and the mechanical unit such as an arm is an example of a second member, and the reducer 1 converts the rotation speed at a predetermined rotation speed ratio between the first member and the second member to transmit the driving force.

[0027] The main body 102 is formed in a cylindrical shape along the axis O1. The main body 102, which is an example of a first cylindrical portion, has an input side in the axial direction O1 open. The reduction mechanism 200 is rotatably housed in the opening of the main body 102. A case flange 104 is integrally formed on the output side of the main body 102. A plurality of (e.g., three) transmission gears 200A and an input gear 200B are exposed on the input side of the reducer 1.

[0028] The display unit 10 is attached to the case flange portion 104 of the case 100. The display unit 10 is a display device having a shape that allows it to be attached to the surface of the case 100. The display unit 10 is, for example, a display device having a thickness of about 1 millimeter, and is configured using an extremely thin organic EL display or a sheet-type LED lighting device. The display unit 10 may be formed on the entire peripheral surface, which is the surface exposed in the radial direction of the case flange portion 104, but it is sufficient that the display unit 10 is formed on at least a part of the peripheral surface.

[0029] Fig. 2 is a cross-sectional view showing the configuration of the reducer 1 according to the embodiment, and Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2. The reducer 1 according to this embodiment is configured to rotate the crankshaft 10A by rotating the input shaft 8 corresponding to the input gear 200B, and to oscillate and rotate the oscillating gears 14 and 16 in conjunction with the eccentric portions 10a and 10b of the crankshaft 10A, thereby obtaining an output rotation that is reduced in speed from the input rotation.

[0030] 2 and 3, the reducer 1 includes an outer cylinder 2 corresponding to the main body portion 102 (first cylindrical portion), a carrier portion 4 which is an example of a second cylindrical portion, an input shaft 8, a plurality of (e.g., three) crankshafts 10A, a first oscillating gear 14, a second oscillating gear 16, and a plurality of (e.g., three) transmission gears 20. The transmission gear 20 corresponds to the transmission gear 200A in FIG.

[0031] The outer cylinder 2 constitutes the outer surface of the reducer 1 and has a generally cylindrical shape. A large number of pin grooves 2b are formed on the inner peripheral surface of the outer cylinder 2. Each pin groove 2b is arranged to extend in the axial direction of the outer cylinder 2 and has a semicircular cross-sectional shape in a cross section perpendicular to the axial direction. These pin grooves 2b are arranged at equal intervals in the circumferential direction on the inner peripheral surface of the outer cylinder 2.

[0032] The outer cylinder 2 has a large number of internally toothed pins 3. Each internally toothed pin 3 is attached to a pin groove 2b. Specifically, each internally toothed pin 3 is fitted into a corresponding pin groove 2b, and is arranged in a position extending in the axial direction of the outer cylinder 2. As a result, the large number of internally toothed pins 3 are lined up at equal intervals along the circumferential direction of the outer cylinder 2. The first external teeth 14a of the first oscillating gear 14 and the second external teeth 16a of the second oscillating gear 16 mesh with these internally toothed pins 3.

[0033] The carrier part 4 is accommodated in the outer cylinder 2 while being disposed coaxially with the outer cylinder 2. The carrier part 4 rotates relatively to the outer cylinder 2 (case 100) about the same axis. Specifically, the carrier part 4 is disposed radially inside the outer cylinder 2, and in this state, is supported by a pair of main bearings 6 spaced apart from each other in the axial direction so as to be rotatable relative to the outer cylinder 2.

[0034] The carrier portion 4 includes a base portion having a base plate portion 4a and a plurality of (eg, three) shaft portions 4c, and an end plate portion 4b.

[0035] The base plate portion 4a is disposed near one axial end portion within the outer cylinder 2. A circular through hole 4d is provided in the radial center of the base plate portion 4a. A plurality of (e.g., three) crankshaft mounting holes 4e (hereinafter simply referred to as mounting holes 4e) are provided around the through hole 4d at equal intervals in the circumferential direction.

[0036] The end plate portion 4b is provided axially apart from the base plate portion 4a, and is disposed in the outer cylinder 2 near the other end in the axial direction. A through hole 4f is provided in the radial center of the end plate portion 4b. Around the through hole 4f, a plurality of (e.g., three) crankshaft mounting holes 4g (hereinafter simply referred to as mounting holes 4g) are provided at positions corresponding to the plurality of mounting holes 4e of the base plate portion 4a. A closed space is formed within the outer cylinder 2, surrounded by the inner surfaces of both the end plate portion 4b and the base plate portion 4a, which face each other, and the inner peripheral surface of the outer cylinder 2.

[0037] The three shaft portions 4c are integral with the base plate portion 4a and extend linearly from one main surface (inner surface) of the base plate portion 4a toward the end plate portion 4b. The three shaft portions 4c are disposed at equal intervals in the circumferential direction (see FIG. 3). Each shaft portion 4c is fastened to the end plate portion 4b by a bolt 4h (see FIG. 2). This integrates the base plate portion 4a, the shaft portions 4c, and the end plate portion 4b.

[0038] The input shaft 8 functions as an input section to which the driving force of a drive motor (not shown) is input. The input shaft 8 is inserted into the through hole 4f of the end plate section 4b and the through hole 4d of the base section 4a. The input shaft 8 is disposed so that its axis coincides with the axis of the outer tube 2 and the carrier section 4, and rotates about its axis. An input gear 8a is provided on the outer peripheral surface of the tip of the input shaft 8.

[0039] The three crankshafts 10A are disposed at equal intervals around the input shaft 8 inside the outer cylinder 2 (see FIG. 3). Each crankshaft 10A is supported by a pair of crank bearings 12a, 12b to be rotatable about its axis relative to the carrier portion 4 (see FIG. 2). Specifically, a first crankshaft bearing 12a is attached to a portion of each crankshaft 10A that is a predetermined length axially inward from one axial end thereof, and this first crankshaft bearing 12a is attached to a mounting hole 4e of the base plate portion 4a. Meanwhile, a second crankshaft bearing 12b is attached to the other axial end of each crankshaft 10A, and this second crankshaft bearing 12b is attached to a mounting hole 4g ​​of the end plate portion 4b. As a result, the crankshaft 10A is rotatably supported by the base plate portion 4a and the end plate portion 4b.

[0040] Each crankshaft 10A has a shaft body 12c and eccentric portions 10a, 10b formed integrally with the shaft body 12c. The first eccentric portion 10a and the second eccentric portion 10b are arranged side by side in the axial direction between the portions supported by the crank bearings 12a, 12b. The first eccentric portion 10a and the second eccentric portion 10b each have a cylindrical shape, and both of them protrude radially outward from the shaft body 12c in a state of being eccentric with respect to the axis of the shaft body 12c. The first eccentric portion 10a and the second eccentric portion 10b are each eccentric from the axis by a predetermined amount, and are arranged to have a phase difference of a predetermined angle with respect to each other.

[0041] One end of the crankshaft 10A, i.e., a portion axially outward of the portion attached within the mounting hole 4e of the base plate portion 4a, is provided with a fitted portion 10c to which the transmission gear 20 is attached. The reducer 1 of the embodiment is not limited to the example of Fig. 2, and may have a configuration called a reverse assembly in which the crankshaft 10A is disposed axially inverted and the fitted portion 10c is disposed axially outward of the mounting hole 4g ​​of the end plate portion 4b.

[0042] The first oscillating gear 14 is disposed in the closed space inside the outer cylinder 2 and is attached to the first eccentric portion 10a of each crankshaft 10 via a first roller bearing 18a. When each crankshaft 10A rotates and the first eccentric portion 10a rotates eccentrically, the first oscillating gear 14 oscillates and rotates while meshing with the internal tooth pin 3 in conjunction with the eccentric rotation.

[0043] The first oscillating gear 14 has a size slightly smaller than the inner diameter of the outer cylinder 2. The first oscillating gear 14 has first external teeth 14a, a central through-hole 14b, a plurality (e.g., three) of first eccentric portion insertion holes 14c, and a plurality (e.g., three) of shaft portion insertion holes 14d. The first external teeth 14a have a wave shape that is smoothly continuous over the entire circumferential direction of the oscillating gear 14.

[0044] The central through-hole 14b is provided in the radial center of the first oscillating gear 14. The input shaft 8 is inserted through the central through-hole 14b with some play.

[0045] The three first eccentric portion insertion holes 14c are provided at equal intervals in the circumferential direction around the central through hole 14b in the first oscillating gear 14. The first eccentric portions 10a of the crankshafts 10A are inserted into the respective first eccentric portion insertion holes 14c via first roller bearings 18a on the inner wall side of the respective first eccentric portion insertion holes 14c.

[0046] The three shaft portion insertion holes 14d are provided at equal intervals in the circumferential direction around the central through hole 14b of the first oscillating gear 14. Each shaft portion insertion hole 14d is disposed at a position between the three first eccentric portion insertion holes 14c in the circumferential direction. The corresponding shaft portion 4c is inserted into each shaft portion insertion hole 14d with some play.

[0047] The second oscillating gear 16 is disposed in the closed space in the outer cylinder 2 and is attached to the second eccentric portion 10b of each crankshaft 10A via a second roller bearing 18b. The first oscillating gear 14 and the second oscillating gear 16 are arranged side by side in the axial direction in accordance with the arrangement of the first eccentric portion 10a and the second eccentric portion 10b. When each crankshaft 10A rotates and the second eccentric portion 10b rotates eccentrically, the second oscillating gear 16 oscillates and rotates while meshing with the internal tooth pin 3 in conjunction with the eccentric rotation.

[0048] The second oscillating gear 16 has a size slightly smaller than the inner diameter of the outer cylinder 2, and has the same configuration as the first oscillating gear 14. That is, the second oscillating gear 16 has second external teeth 16a, a central through hole 16b, a plurality (e.g., three) second eccentric portion insertion holes 16c, and a plurality (e.g., three) shaft portion insertion holes 16d. These have the same configuration as the first external teeth 14a, the central through hole 14b, the plurality of first eccentric portion insertion holes 14c, and the plurality of shaft portion insertion holes 14d of the first oscillating gear 14. The second eccentric portion 10b of the crankshaft 10A is inserted into each second eccentric portion insertion hole 16c via a second roller bearing 18b on the inner wall side of each second eccentric portion insertion hole 16c.

[0049] Each transmission gear 20 transmits the rotation of the input gear 8a to the corresponding crankshaft 10A. Each transmission gear 20 is fitted onto a fitted portion 10c provided at one end of the shaft body 12c of the corresponding crankshaft 10A. Each transmission gear 20 rotates integrally with the crankshaft 10A around the same axis as the rotation axis of the crankshaft 10A. Each transmission gear 20 has external teeth 20a that mesh with the input gear 8a.

[0050] [Functional configuration of reducer 1] FIG. 4 is a block diagram showing an example of a functional configuration of the reducer 1 of the embodiment. The reducer 1 includes a display unit 10, a display control unit 20, a power storage unit 30, and a power supply unit 40. The display unit 10 displays notification information. The notification information is information that is visually recognized by a person using the reducer 1 or a person using a mechanism using the reducer 1 and is notified to the person. The notification information is, for example, static information such as manufacturer information of the reducer 1 and advertising information of the reducer 1, and dynamic information such as the state of the reducer 1 and the state of a mechanism connected to the reducer 1. The static information is information that does not change depending on the time the reducer 1 is used. The dynamic information is information that changes depending on the time the reducer 1 is used, and is, for example, information on the temperature of the reducer 1, the load of the reducer 1, the temperature and load of a mechanism connected to the reducer 1, and the distance between the reducer 1 and a target object. The target object is an object present in the vicinity of the reducer 1, such as a person. The advertisement information is, for example, information about sales promotion by the manufacturer (for example, information about an exhibition), information about a new type of speed reducer 1, or an entertaining video.

[0051] The display control unit 20 includes a storage unit 22 and a drive unit 24. The storage unit 22 is, for example, a RAM or a flash memory, and stores notification information. The drive unit 24 reads out the notification information stored in the storage unit 22, and operates the display unit 10 by supplying a signal based on the notification information to the display unit 10. Operating the display unit 10 includes, for example, starting or ending the display of the notification information by the display unit 10, switching the content of the notification information, changing the display form of the notification information, such as the color or size, and switching the display position of the notification information.

[0052] The power storage unit 30 includes a battery that stores self-generated power or power supplied from outside the reducer 1. The battery may be a capacitor (including an electric double layer capacitor) or a secondary battery (e.g., a lithium ion battery, a solid lithium ion battery, an air battery, etc.). The power supply unit 40 supplies the power stored in the power storage unit 30 to the display unit 10 and the display control unit 20.

[0053] When the power storage unit 30 generates power by itself, it converts energy present in the environment (external environment) around the reducer 1 into electricity (so-called environmental power generation) and supplies the power for operating the display unit 10, the display control unit 20, and the power supply unit 40. The power storage unit 30 may generate power based on at least one of the following energies: temperature, humidity, radio waves such as Wi-Fi, electromagnetic waves from the environment of the reducer 1 (including radiation and cosmic rays, and including electromagnetic noise emitted from electric motors, etc.), vibration, sound (including ultrasonic waves), light (including visible light, infrared light, and ultraviolet light), and the flow of fluid or powder (wind, waves, etc.). When the power storage unit 30 generates power by itself, it is configured to be able to absorb energy efficiently. For example, when the power storage unit 30 generates power by absorbing light, it is attached to the exposed surface of the reducer 1.

[0054] 5 is a diagram showing an example of mounting the display unit 10 and the like in the embodiment. The display unit 10 is disposed outside the reducer 1 so that notification information is exposed from the surface of the reducer 1. The display control unit 20, the power storage unit 30, and the power supply unit 40 are disposed between the display unit 10 and the surface of the case flange portion 104.

[0055] The reducer 1 of the above-described embodiment can be realized as comprising a case 100, a speed reduction mechanism section 200 having a carrier section 4 rotatably provided with respect to the case 100, which is provided within the case 100 and reduces the speed of rotation input from a drive source and outputs the reduced speed, and a display section 10 having a shape that can be attached to the surface of the case 100 and that displays notification information. According to this reducer, since notification information is displayed on the surface of the reducer, it is possible to easily check the appearance of the reducer.

[0056] The reducer 1 of the above-described embodiment is a gear device that converts the rotational speed at a predetermined rotational speed ratio between a first member and a second member to transmit a driving force, and includes an eccentric portion (10a, 10b), an oscillating gear (14, 16) having an insertion hole (14c, 16c) into which the eccentric portion is inserted and having a tooth portion (14a, 16a), a first cylindrical portion (2, 102) configured to be attachable to one of the first member and the second member, and a second cylindrical portion (2, 103) configured to be attachable to the other of the first member and the second member. It is possible to realize a reducer including a reduction mechanism 200 having a first cylindrical portion (2, 102) and a second cylindrical portion (4), the first cylindrical portion (2, 102) having internal teeth (3) that mesh with the teeth of the oscillating gear, the second cylindrical portion being disposed radially inside the first cylindrical portion while holding the oscillating gear, the first cylindrical portion and the second cylindrical portion being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric portion, and a display portion 10 having a shape that can be attached to the surface of the case 100 and that displays notification information. According to this reducer, since the notification information is displayed on the surface of the reducer, it is possible to easily check the reducer from the outside.

[0057] In the embodiment, a display unit is shown as a means for outputting information, but this is not limited to this, and the output means may be one that stimulates the user's senses, such as a speaker that outputs information as sound or a projector that projects information as light.

[0058] In the reducer 1 of the embodiment, the display unit 10 may be formed in a circumferential shape on at least a part of the surface of the display unit 10. Furthermore, the case 100 includes a main body 102 having a cylindrical shape and a case flange 104 having a shape that protrudes radially outward from the main body 102, and the display unit 10 may be formed on at least a part of the surface of the case flange 104. According to this reducer 1, notification information can be displayed on the case flange 104, which is the outer end of the reducer 1, so that the reducer 1 can be easily confirmed externally.

[0059] In the reducer 1 of the embodiment, the notification information is manufacturer information or advertisement information of the reducer 1. According to this reducer 1, the manufacturer of the reducer 1 and the advertisement of the reducer 1 can be easily confirmed from the appearance. Furthermore, according to the reducer 1, it is possible to prevent the manufacturer of the reducer 1 from being confused with the manufacturer of other reducers.

[0060] FIG. 6 is a top view showing a case flange of the reducer in the embodiment. FIG. 7 is a block diagram showing another example of the reducer in the embodiment. The display unit 10 is formed on the entire peripheral surface of the case flange 104, and may be divided into a plurality of display areas A1, A2, A3, and A4 for operation. Each display area is an area obtained by dividing the circumferential area of ​​the case flange 104 into four equal areas. The display unit 10 includes a display unit 10 corresponding to the display area A1, a display unit 10 corresponding to the display area A2, a display unit 10 corresponding to the display area A3, and a display unit 10 corresponding to the display area A4. The display unit 10 can control the display of each display unit 10 by controlling the drive unit 24. Controlling the display of each display unit 10 includes, for example, starting or ending the display of notification information by each display unit 10, switching between displaying and hiding the notification information on each display unit 10, switching the content of the notification information on each display unit 10, changing the display form of the notification information, such as the color or size, on each display unit 10, and switching the display position of the notification information between display units 10.

[0061] FIG. 8 is a block diagram showing another example of a reducer in an embodiment. The reducer 1 may control the display of each display unit 10 based on the input of a sensor, or may control the display of each display unit 10 based on the input of a user. Each display unit 10 may include a sensor corresponding to a plurality of display areas A1, A2, A3, and A4. The sensor is, for example, a sensor that detects a touch operation by a user or a sensor that detects the brightness of the display area. The display unit 10 may perform control to display notification information in a display area where a touch operation by a user is detected, and not to display notification information in a display area where a touch operation by a user is not detected. The display unit 10 may perform control to display notification information when the brightness of the display area detected by the sensor exceeds a threshold, and not to display notification information when the brightness of the display area detected by the sensor does not exceed the threshold.

[0062] Furthermore, the multiple display areas may be display areas provided in each of the multiple reducers 1. For example, in an industrial robot or the like, when there are multiple joints of a pair of arms rotatably connected, the display unit 10 may be provided in each reducer 1 provided in each joint. Each reducer 1 may display notification information in conjunction with the other reducers 1 by performing short-range wireless communication between the display control units 20.

[0063] According to the reducer 1 of the embodiment, the content of the notification information can be switched by the display unit 10. As a result, the reducer 1 can change the notification content for the user. Also, according to the embodiment, the display unit 10 can switch the display area for the notification information. As a result, the reducer 1 can display the notification information in a display area corresponding to a part exposed to the user, for example, and as a result, the reducer 1 can be easily checked externally.

[0064] According to the reducer 1 of the embodiment, since the power generation unit (power storage unit 30) that generates power to operate the display unit 10 is provided, even if the display unit 10 is attached to the reducer 1, there is no need to provide additional wiring.

[0065] Second embodiment The second embodiment will be described below. The display unit 10 in the reducer 1 of the second embodiment is formed on an external mechanism such as a drive source or an arm to which rotation output from the carrier unit 4 is input. Note that the external mechanism is connected to the carrier unit (transmission unit) 4, but is not limited thereto, and when the carrier unit 4 is fixed to the case flange unit 104, the rotation of the case flange unit 104 may be transmitted. 9 is a perspective view showing an example of an actuator 500 including a reducer 1 and a motor 600 as a drive source in the second embodiment. The motor 600 is connected to the reducer 1, and the motor 600 transmits and outputs the rotation of the motor 600. The motor 600 includes a case 610. A display unit 620 is formed on the side of the case 610 that is connected to the reducer 1, and a display unit 630 is formed on a side of the case 610.

[0066] 10 is a block diagram showing a functional configuration of the reducer 1 in the second embodiment. The power supply unit 40 supplies power for operating the display units 620, 630, and the display control unit 20 drives the display units 620, 630 on the motor 600 side to display notification information on the display units 620, 630. The power supply unit 40 may include, but is not limited to, a power storage unit 30, and may distribute power from a motor power supply unit 640 serving as a power supply unit that controls the driving power of the motor 600 to the display unit 10, the display control unit 20, and the display units 620, 630.

[0067] According to the second embodiment, in addition to the display unit 10 of the reducer 1, display units 620, 630 can be provided on the motor 600 or the arm connected to the reducer 1, thereby increasing the area of ​​the display region. As a result, according to the second embodiment, the reducer 1 and the motor 600 can be more easily checked externally.

[0068] According to the second embodiment, the display unit 10 is operated using power supplied from the motor power supply unit 640 that controls the driving power of the motor 600, thereby eliminating the need to provide a power generation unit or an additional power supply for the display unit 10.

[0069] The display control unit 20 may control the display of the display unit 10 and the display units 620 and 630. The display control unit 20 may switch between display and non-display of notification information and the content of the notification information based on, for example, the position of the display unit, the brightness of the display unit, or a touch operation on the display unit. For example, the display control unit 20 may display red when the temperature of the reducer 1 or the motor 600 is higher than a predetermined value, and may display blue when the temperature of the reducer 1 or the motor 600 is lower than a predetermined value, and may further change the color within a predetermined range (for example, in units of 10 degrees).

[0070] Third embodiment The third embodiment will be described below. The display unit 10 in the reducer 1 of the third embodiment displays, as notification information, information related to the temperature of the reducer 1 and information related to the load of the reducer 1. Fig. 11 is a block diagram showing an example of the configuration of the reducer in the third embodiment. The reducer 1 of the third embodiment includes a detection unit 50 for detecting information related to the temperature of the reducer 1 and information related to the load of the reducer 1.

[0071] FIG. 12 is a diagram showing an example of mounting the display unit 10 and the like in the third embodiment. The detection unit 50 is disposed on the case flange portion 104 side of the reducer 1, and is a temperature sensor that detects the temperature of the case flange portion 104. The detection unit 50 supplies a signal based on the detected temperature to the drive unit 24, and the drive unit 24 operates the display unit 10 based on the supplied signal to display the temperature of the reducer 1. The detection unit 50 may be a vibration sensor that detects vibration of the case flange portion 104. The vibration of the case flange portion 104 is, for example, information that is the source of the load of the reducer 1. The detection unit 50 supplies a signal based on the detected vibration to the drive unit 24, and the drive unit 24 operates the display unit 10 based on the supplied signal to display the load of the reducer 1. The drive unit 24 may display the temperature and load of the reducer 1 as numerical values, but is not limited thereto, and may display them in color. For example, the display control unit 20 may display red when the load of the reducer 1 or the motor 600 is in a range higher than a predetermined value, display blue when the load of the reducer 1 or the motor 600 is in a range lower than a predetermined value, display yellow when the load of the reducer 1 or the motor 600 is in a range between a high range and a low range, and may further change the color for each range. Furthermore, the display control unit 20 may convert the load of the reducer 1 or the motor 600 into a risk level and change the color according to the converted risk level. Furthermore, the display control unit 20 may display the possibility of occurrence of a failure based on the temperature or load of the reducer 1 or the motor 600, and may change the display color in the order of blue, yellow, and green as the possibility of occurrence of a failure increases.

[0072] 13 is a block diagram showing an example of the configuration of a reducer in the third embodiment. The reducer 1 in the third embodiment may detect information related to the temperature of the motor 600 and information related to the load of the motor 600 by the detection unit 50, and may display information related to the temperature of the motor 600 as an external mechanism connected to the reducer 1 and information related to the load of the motor 600 as notification information by the display unit 10. The reducer 1 may display notification information related to the motor 600 in addition to the notification information related to the reducer 1, or may display notification information related to the motor 600 instead of the notification information related to the reducer 1.

[0073] Furthermore, the detection unit 50 may detect information regarding the distance between the reducer 1 and the target object, and may display the information regarding the distance between the reducer 1 and the target object as notification information on the display unit 10. The detection unit 50 in this case may be a distance sensor or a proximity sensor capable of acquiring information regarding the distance, such as a distance sensor or a camera device. The reducer 1 may display the distance detected by the distance sensor, and may display information regarding a warning or output a sound when the distance detected by the distance sensor is equal to or less than a predetermined value. The reducer 1 may display information regarding a warning or output a sound when a person is detected by the proximity sensor, for example. The distance sensor may be, for example, a sensor that measures the distance between the object to be detected and the reducer 1, and may be, for example, a sensor that employs an existing method such as a method using infrared rays, a method using ultrasonic waves, or a method using a laser. The proximity sensor may be a sensor that detects that a person has approached within a predetermined distance from the reducer 1, and may be, for example, a sensor that employs an existing method such as an induction type, a capacitance type, or a magnetic type.

[0074] According to the reducer 1 of the third embodiment, information on the temperature and load of the reducer 1 and information on the temperature and load of external mechanisms such as the motor 600 and the arm are displayed, so that the reducer 1 can be easily checked and the information on the temperature and load can also be checked. Furthermore, according to the reducer 1 of the third embodiment, information on the distance between the reducer 1 and a target object is displayed, so that it is even easier to check the appearance of the reducer 1.

[0075] (Fourth embodiment) The fourth embodiment will be described below. FIG. 14 is a block diagram showing an example of the configuration of a reducer in the fourth embodiment. The reducer 1 in the fourth embodiment is communicatively connected to an information providing device 700 via, for example, a communication network, and includes a communication interface (I / F) 710 that performs communication processing with the information providing device 700. The information providing device 700 is an information providing server managed by a manufacturer of the reducer 1, a maintenance company of the reducer 1, or a purchaser or user of the reducer 1. The communication interface 710 is a network interface card (NIC) or a wireless communication module. The reducer 1 includes a communication interface (not shown in FIG. 2). The communication network includes, for example, the Internet, a wide area network (WAN), a local area network (LAN), and a cellular network. The reducer 1 may update the notification information stored in the memory unit 22 based on a command transmitted from the information providing device, or may control the drive unit 24 to switch the notification information to be displayed.

[0076] Furthermore, the reducer 1 of the fourth embodiment may transmit the above-mentioned information related to the temperature of the reducer 1 and the motor 600 and information related to addition to the information providing device 700 via the communication interface 710. The reducer 1 may store notification information corresponding to the information related to the temperature of the reducer 1 and the motor 600 and information related to addition transmitted from the information providing device 700 in the storage unit 22, and display the stored notification information on the display unit 10. Furthermore, the reducer 1 may provide feedback by transmitting the information related to the temperature of the reducer 1 and the motor 600 and information related to addition transmitted from the information providing device 700 to a manufacturing company of the reducer 1, a maintenance company of the reducer 1, or a management terminal of a purchaser or user of the reducer 1.

[0077] Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to the above, and various design changes, etc. are possible within the scope that does not deviate from the gist of the present invention. [Explanation of symbols]

[0078] 1... reducer, 10, 620, 630... display unit, 20... display control unit, 22... storage unit, 24... drive unit, 30... power storage unit, 40... power supply unit, 100... case, 102... main body unit, 104... case flange unit, 110... carrier unit, 600... motor, 640... motor power supply unit, 700... information providing device, 710... communication interface

Claims

1. Case and a speed reducing mechanism section that has a transmission section that is rotatably provided with respect to the case, the speed reducing mechanism section being provided within the case and that reduces the speed of rotation input from a drive source and outputs the reduced speed rotation; a display unit having a shape that can be attached to a surface of the case and that displays notification information; The case includes a main body having a cylindrical shape and a flange portion having a shape that protrudes radially outward from the main body, The indication portion is formed on at least a part of the surface of the flange portion. reducer.

2. A case, a speed reducing mechanism section that has a transmission section that is rotatably provided with respect to the case, the speed reducing mechanism section being provided within the case and that reduces the speed of rotation input from a drive source and outputs the reduced speed rotation; A display unit that has a shape that can be attached to a surface of the case and displays notification information; Equipped with The display unit is formed on an external mechanism to which the rotation output from the drive source or the transmission unit is input.

3. The reducer according to claim 2 , wherein the notification information is information regarding a temperature of the external mechanism.

4. The reducer according to claim 2 , wherein the notification information is information related to a load on the external mechanism.

5. The reducer according to claim 2 , wherein the notification information is information regarding a distance between the reducer and a target object.

6. A case, a speed reducing mechanism section that has a transmission section that is rotatably provided with respect to the case, the speed reducing mechanism section being provided within the case and that reduces the speed of rotation input from a drive source and outputs the reduced speed rotation; A display unit that has a shape that can be attached to a surface of the case and displays notification information; Equipped with A reducer including a power generation unit that generates power for operating the display unit.

7. A case, a speed reducing mechanism section that has a transmission section that is rotatably provided with respect to the case, the speed reducing mechanism section being provided within the case and that reduces the speed of rotation input from a drive source and outputs the reduced speed rotation; A display unit that has a shape that can be attached to a surface of the case and displays notification information; Equipped with A reducer that operates the display unit using power supplied from a power supply unit that controls the driving power of the driving source.

8. a reduction mechanism section that converts rotational speeds at a predetermined rotational speed ratio between a first member and a second member to transmit a driving force, the reduction mechanism section comprising: an eccentric section; an oscillating gear having a through hole into which the eccentric section is inserted and having a toothed section; a first cylindrical section configured to be attachable to one of the first member and the second member; and a second cylindrical section configured to be attachable to the other of the first member and the second member, the first cylindrical section having internal teeth that mesh with the toothed section of the oscillating gear, the second cylindrical section being disposed radially inside the first cylindrical section while holding the oscillating gear, the first cylindrical section and the second cylindrical section being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric section; a display unit having a shape that can be attached to a surface of the first cylindrical portion and that displays notification information; The display unit is formed on a drive source or an external mechanism to which rotation output from a transmission unit is input.

9. a reduction mechanism section that converts rotational speeds at a predetermined rotational speed ratio between a first member and a second member to transmit a driving force, the reduction mechanism section comprising: an eccentric section; an oscillating gear having a through hole into which the eccentric section is inserted and having a toothed section; a first cylindrical section configured to be attachable to one of the first member and the second member; and a second cylindrical section configured to be attachable to the other of the first member and the second member, the first cylindrical section having internal teeth that mesh with the toothed section of the oscillating gear, the second cylindrical section being disposed radially inside the first cylindrical section while holding the oscillating gear, the first cylindrical section and the second cylindrical section being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric section; A display unit that has a shape that can be attached to a surface of the first cylindrical portion and displays notification information; A reducer including a power generation unit that generates power for operating the display unit.

10. a reduction mechanism section that converts rotational speeds at a predetermined rotational speed ratio between a first member and a second member to transmit a driving force, the reduction mechanism section comprising: an eccentric section; an oscillating gear having a through hole into which the eccentric section is inserted and having a toothed section; a first cylindrical section configured to be attachable to one of the first member and the second member; and a second cylindrical section configured to be attachable to the other of the first member and the second member, the first cylindrical section having internal teeth that mesh with the toothed section of the oscillating gear, the second cylindrical section being disposed radially inside the first cylindrical section while holding the oscillating gear, the first cylindrical section and the second cylindrical section being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric section; a display unit having a shape that can be attached to a surface of the first cylindrical portion and that displays notification information; A reducer that operates the display unit using power supplied from a power supply unit that controls the driving power of a driving source.

11. A first cylindrical portion including a main body having a cylindrical shape and a flange portion having a shape extending radially outward from the main body; a gear device which transmits a driving force by converting rotational speeds between a first member and a second member at a predetermined rotational speed ratio, the gear device comprising: an eccentric portion; an oscillating gear having a through hole into which the eccentric portion is inserted and having a tooth portion; a first cylindrical portion configured to be attachable to one of the first member and the second member; and a second cylindrical portion configured to be attachable to the other of the first member and the second member, the first cylindrical portion having internal teeth which mesh with the tooth portion of the oscillating gear, the second cylindrical portion being disposed radially inside the first cylindrical portion while holding the oscillating gear, the first cylindrical portion and the second cylindrical portion being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric portion; and A display unit is attached circumferentially to at least a part of the surface of the flange portion. reducer.

12. A first cylindrical portion including a main body having a cylindrical shape and a flange portion having a shape extending radially outward from the main body; a gear device which transmits a driving force by converting rotational speeds between a first member and a second member at a predetermined rotational speed ratio, the gear device comprising: an eccentric portion; an oscillating gear having a through hole into which the eccentric portion is inserted and having a tooth portion; a first cylindrical portion configured to be attachable to one of the first member and the second member; and a second cylindrical portion configured to be attachable to the other of the first member and the second member, the first cylindrical portion having internal teeth which mesh with the tooth portion of the oscillating gear, the second cylindrical portion being disposed radially inside the first cylindrical portion while holding the oscillating gear, the first cylindrical portion and the second cylindrical portion being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric portion; and a display section that is affixed circumferentially to at least a portion of a surface of the flange section and displays manufacturer information or advertising information of the reducer, The display unit is formed on an external mechanism to which the rotation output from the reduction mechanism unit is input.

13. A first cylindrical portion including a main body having a cylindrical shape and a flange portion having a shape extending radially outward from the main body; a gear device which transmits a driving force by converting rotational speeds between a first member and a second member at a predetermined rotational speed ratio, the gear device comprising: an eccentric portion; an oscillating gear having a through hole into which the eccentric portion is inserted and having a tooth portion; a first cylindrical portion configured to be attachable to one of the first member and the second member; and a second cylindrical portion configured to be attachable to the other of the first member and the second member, the first cylindrical portion having internal teeth which mesh with the tooth portion of the oscillating gear, the second cylindrical portion being disposed radially inside the first cylindrical portion while holding the oscillating gear, the first cylindrical portion and the second cylindrical portion being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric portion; and a display section that is affixed circumferentially to at least a portion of a surface of the flange section and displays manufacturer information or advertising information of the reducer, A reducer including a power generation unit that generates power for operating the display unit.

14. A first cylindrical portion including a main body having a cylindrical shape and a flange portion having a shape extending radially outward from the main body; a gear device which transmits a driving force by converting rotational speeds between a first member and a second member at a predetermined rotational speed ratio, the gear device comprising: an eccentric portion; an oscillating gear having a through hole into which the eccentric portion is inserted and having a tooth portion; a first cylindrical portion configured to be attachable to one of the first member and the second member; and a second cylindrical portion configured to be attachable to the other of the first member and the second member, the first cylindrical portion having internal teeth which mesh with the tooth portion of the oscillating gear, the second cylindrical portion being disposed radially inside the first cylindrical portion while holding the oscillating gear, the first cylindrical portion and the second cylindrical portion being concentrically rotatable relative to each other by the oscillation of the oscillating gear accompanying the rotation of the eccentric portion; and a display section that is affixed circumferentially to at least a portion of a surface of the flange section and displays manufacturer information or advertising information of the reducer, A reducer that operates the display unit using power supplied from a power supply unit that controls driving power of a drive source connected to the reduction mechanism unit.

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