EP4669876A1 - COUPLING PART FOR CONNECTING TWO SHAFTS AND MECHANICAL TRANSMISSION PART - Google Patents

COUPLING PART FOR CONNECTING TWO SHAFTS AND MECHANICAL TRANSMISSION PART

Info

Publication number
EP4669876A1
EP4669876A1 EP23929198.2A EP23929198A EP4669876A1 EP 4669876 A1 EP4669876 A1 EP 4669876A1 EP 23929198 A EP23929198 A EP 23929198A EP 4669876 A1 EP4669876 A1 EP 4669876A1
Authority
EP
European Patent Office
Prior art keywords
shaft
mounting hole
coupling part
connecting component
assembly structures
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.)
Pending
Application number
EP23929198.2A
Other languages
German (de)
French (fr)
Inventor
Xiaoyong Wang
Yongle An
Yanhui Li
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP4669876A1 publication Critical patent/EP4669876A1/en
Pending legal-status Critical Current

Links

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/101—Quick-acting couplings in which the parts are connected by simply bringing them together axially without axial retaining means rotating with the coupling
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially

Definitions

  • the present application relates to mechanical technologies, and more particularly, to a coupling part for connecting two shafts and a mechanical transmission part.
  • a coupling usually includes two metal parts and a plastic part. The two metal parts are used to be pressed onto two shafts to be connected, for example the motor shaft and the encoder shaft, and the plastic part is arranged between the two metal parts for connecting the two metal parts together.
  • this coupling solution is very costive.
  • a coupling part and a mechanical transmission part are provided to achieve the connection of two shafts and reduce the cost.
  • the coupling part provided by embodiments of the present application includes: a first connecting component comprising a first mounting hole and at least two first assembly structures arranged around the first mounting hole, wherein the first mounting hole is to be fixedly connected with a first shaft; and a second connecting component comprising a second mounting hole and at least two second assembly structures arranged around the second mounting hole, wherein the second mounting hole is to be fixedly connected with a second shaft, and the at least two second assembly structures are to be respectively connected with the at least two first assembly structures through fitted curved surfaces.
  • the mechanical transmission part provided by embodiments of the present application includes: a first shaft, a second shaft, and a coupling part mentioned above.
  • the two connecting components may be made of metal or plastic according to requirements.
  • the bonding effect between the connecting components and corresponding shafts may be increased by setting axial slots for storing adhesive in the mounting holes.
  • Figure 1 is a schematic diagram illustrating a coupling part according to an embodiment of the present application.
  • Figure 2 is a schematic diagram illustrating a mechanical transmission part including the coupling part according to an embodiment of the present application.
  • Figure 3 is a schematic diagram illustrating an axial slot distributed in a mounting hole according to an example of the present application.
  • Figure 1 is a schematic diagram illustrating a coupling part according to an embodiment of the present application.
  • Figure 2 is a schematic diagram illustrating a mechanical transmission part including the coupling part according to an embodiment of the present application.
  • the mechanical transmission part includes a first shaft1such as a motor shaft, a second shaft 2 such as an encoder shaft, and a coupling part 3.
  • the coupling part includes a first connecting component 31 and a second connecting component 32.
  • the first connecting component 31 includes a first mounting hole 311 and at least two first assembly structures 312 arranged around the first mounting hole 311. In figure 1, three first assembly structures 312 are taken as an example.
  • the first mounting hole 311 is used to be fixedly connected with the first shaft 1.
  • the second connecting component 32 includes a second mounting hole 321 and at least two second assembly structures 322 arranged around the second mounting hole 321. In figure 1, three second assembly structures 322 are taken as an example.
  • the second mounting hole 321 is used to be fixedly connected with the second shaft 2.
  • the number of the second assembly structures 322 is the same as that of the first assembly structures 312, and the positions of the second assembly structures 322 and that of the first assembly structures 312 correspond to each other.
  • the at least two second assembly structures 322 are to be respectively connected with the at least two first assembly structures 312 through closely fitted curved surfaces. That is to say, when the first connecting component 31 is assembled with the second connecting component 32, and the assembled coupling part is rotated, the fit of the closely fitted curved surfaces may be equivalent to interference fit.
  • each of the at least two first assembly structures 312 may be an assembly groove including an inner curved surface
  • each of the at least two second assembly structures 322 may be an assembly pin including an outer curved surface
  • the inner curved surface is to fit the outer curved surface.
  • the curved surface may be a cylindrical surface, or may be a spherical surface, or as shown in figure 1, may include a cylindrical surface S11, S21 and a hemispherical surface S12, S22 located at one end of the cylindrical surface S11, S21 and tangent to the cylindrical surface S11, S21, or may be an irregular curved surface.
  • the first shaft 1 is a motor shaft
  • the second shaft 2 is an encoder shaft
  • the first shaft may be an encoder shaft
  • the second shaft may be a motor shaft
  • first connecting component 31 and the second connecting component 32 may be all metal components, at this time, the first mounting hole 311 may be fixedly connected with the first shaft 1 by interference fit, and the second mounting hole 321 may be fixedly connected with the second shaft 2 by interference fit.
  • first connecting component 31 and the second connecting component 32 may be all plastic components, and at this time, the first mounting hole 311may be fixedly connected with the first shaft 1 by adhesive for example glue, the second mounting hole 321 may be fixedly connected with the second shaft 2 by adhesive.
  • each of the first connecting component 31 and the second connecting component 32 may further include at least one axial slot distributed in corresponding mounting hole.
  • the first connecting component 31 is taken as an example in figure 3. Namely, the first connecting component 31 may further include at least one axial slot 3111 distributed in the first mounting hole 311, and the second connecting component 32 may further include at least one axial slot (not shown in figure 3) distributed in the second mounting hole.
  • the axial slots are used to store adhesive to increase the bonding effect.
  • the at least one axial slot may be multiple axial slots distributed evenly in corresponding mounting hole.
  • the two connecting components may be made of metal or plastic according to requirements.
  • the bonding effect between the connecting components and corresponding shafts may be increased by setting axial slots for storing adhesive in the mounting holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

A coupling part for connecting two shafts and a mechanical transmission part are disclosed. The coupling part (3) includes a first connecting component (31) comprising a first mounting hole (311) and at least two first assembly structures (312) arranged around the first mounting hole, wherein the first mounting hole is to be fixedly connected with a first shaft (1); and a second connecting component (32) comprising a second mounting hole (321) and at least two second assembly structures (322) arranged around the second mounting hole, wherein the second mounting hole is to be fixedly connected with a second shaft (2), and the at least two second assembly structures are to be respectively connected with the at least two first assembly structures through fitted curved surfaces. Thus, two shafts can be connected and the cost is reduced.

Description

    COUPLING PART FOR CONNECTING TWO SHAFTS AND MECHANICAL TRANSMISSION PART FIELD
  • The present application relates to mechanical technologies, and more particularly, to a coupling part for connecting two shafts and a mechanical transmission part.
    • BACKGROUND
  • In a mechanical transmission part such as a part including an encoder and a motor shaft, in order to connect two shafts for instance an encoder shaft and the motor shaft, a common way is to use screws to fix the encoder to the motor shaft in axial direction or radial direction. For those cases that there is no space for screwing or there is no through-hole on the encoder for an axial screw, a coupling is often used. A coupling usually includes two metal parts and a plastic part. The two metal parts are used to be pressed onto two shafts to be connected, for example the motor shaft and the encoder shaft, and the plastic part is arranged between the two metal parts for connecting the two metal parts together. However, this coupling solution is very costive.
  • In addition, those skilled in the art are committed to finding other coupling solutions.
  • SUMMARY
  • According to embodiments of the present application, a coupling part and a mechanical transmission part are provided to achieve the connection of two shafts and reduce the cost.
  • The coupling part provided by embodiments of the present application includes: a first connecting component comprising a first mounting hole and at least two first assembly structures arranged around the first mounting hole, wherein the first mounting hole is to be fixedly connected with a first shaft; and a second connecting component comprising a second mounting hole and at least two second assembly structures arranged around the second mounting hole, wherein the second mounting hole is to be fixedly connected with a second shaft, and the at least two second assembly structures are to be respectively connected with the at least two first assembly structures through fitted curved surfaces.
  • The mechanical transmission part provided by embodiments of the present application includes: a first shaft, a second shaft, and a coupling part mentioned above.
  • It can be seen from the above technical solutions in embodiments of the application, since the first assembly structures on the first connecting component and the second assembly structures on the second connecting component are respectively connected through fitted curved surfaces, when assembled coupling part start to rotate, the fit of the fitted curved surfaces may be equivalent to interference fit, it is not necessary for a middle plastic part to respectively connect the two connecting components, thus the cost may be reduced.
  • In addition, the two connecting components may be made of metal or plastic according to requirements. When the two connecting components are made in plastic, the bonding effect between the connecting components and corresponding shafts may be increased by setting axial slots for storing adhesive in the mounting holes.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • For a better understanding of the present application, reference should be made to the Detailed Description below, in conjunction with the following drawings in which like reference numerals refer to corresponding parts throughout the figures.
  • Figure 1 is a schematic diagram illustrating a coupling part according to an embodiment of the present application.
  • Figure 2 is a schematic diagram illustrating a mechanical transmission part including the coupling part according to an embodiment of the present application.
  • Figure 3 is a schematic diagram illustrating an axial slot distributed in a mounting hole according to an example of the present application.
  • The reference numerals are as follows:

    • DETAILED DESCRIPTION
  • In order to achieve the connection of two shafts and decrease the cost, a simple coupling part is considered to be provided in embodiments of the present application.
  • Reference will now be made in detail to examples, which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. Also, the figures are illustrations of an example, in which assemblies shown in the figures are not necessarily essential for implementing the present application. In other instances, well-known assemblies, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the examples.
  • Figure 1 is a schematic diagram illustrating a coupling part according to an embodiment of the present application. Figure 2 is a schematic diagram illustrating a mechanical transmission part including the coupling part according to an embodiment of the present application.
  • As shown in figures 1 and 2, the mechanical transmission part includes a first shaft1such as a motor shaft, a second shaft 2 such as an encoder shaft, and a coupling part 3.
  • The coupling part includes a first connecting component 31 and a second connecting component 32.
  • The first connecting component 31 includes a first mounting hole 311 and at least two first assembly structures 312 arranged around the first mounting hole 311. In figure 1, three first assembly structures 312 are taken as an example. The first mounting hole 311 is used to be fixedly connected with the first shaft 1.
  • The second connecting component 32 includes a second mounting hole 321 and at least two second assembly structures 322 arranged around the second mounting hole 321. In figure 1, three second assembly structures 322 are taken as an example. The second mounting hole 321 is used to be fixedly connected with the second shaft 2.
  • As shown in figure 1, the number of the second assembly structures 322 is the same as that of the first assembly structures 312, and the positions of the second assembly structures 322 and that of the first assembly structures 312 correspond to each other. The at least two second assembly structures 322 are to be respectively connected with the at least two first assembly structures 312 through closely fitted curved surfaces. That is to say, when the first connecting component 31 is assembled with the second connecting component 32, and the assembled coupling part is rotated, the fit of the closely fitted curved surfaces may be equivalent to interference fit.
  • In specific implementation, as shown in figure 1, each of the at least two first assembly structures 312 may be an assembly groove including an inner curved surface, each of the at least two second assembly structures 322 may be an assembly pin including an outer curved surface, and the inner curved surface is to fit the outer curved surface. In an example, the curved surface may be a cylindrical surface, or may be a spherical surface, or as shown in figure 1, may include a cylindrical surface S11, S21 and a hemispherical surface S12, S22 located at one end of the cylindrical surface S11, S21 and tangent to the cylindrical surface S11, S21, or may be an irregular curved surface.
  • In an example, as shown in figure 2, the first shaft 1 is a motor shaft, and the second shaft 2 is an encoder shaft. In another example, the first shaft may be an encoder shaft, and the second shaft may be a motor shaft.
  • In an example, the first connecting component 31 and the second connecting component 32 may be all metal components, at this time, the first mounting hole 311 may be fixedly connected with the first shaft 1 by interference fit, and the second mounting hole 321 may be fixedly connected with the second shaft 2 by interference fit.
  • In another example, the first connecting component 31 and the second connecting component 32 may be all plastic components, and at this time, the first mounting hole 311may be fixedly connected with the first shaft 1 by adhesive for example glue, the second mounting hole 321 may be fixedly connected with the second shaft 2 by adhesive. In order to better bonding the connecting components 31, 31 with corresponding shaft, as shown in figure 3, each of the first connecting component 31 and the second connecting component 32 may further include at least one axial slot distributed in corresponding mounting hole. The first connecting component 31 is taken as an example in figure 3. Namely, the first connecting component 31 may further include at least one axial slot 3111 distributed in the first mounting hole 311, and the second connecting component 32 may further include at least one axial slot (not shown in figure 3) distributed in the second mounting hole. The axial slots are used to store adhesive to increase the bonding effect.
  • In an example, the at least one axial slot may be multiple axial slots distributed evenly in corresponding mounting hole.
  • It can be seen from the above technical solutions in embodiments of the application, since the first assembly structures on the first connecting component and the second assembly structures on the second connecting component are respectively connected through fitted curved surfaces, when assembled coupling part start to rotate, the fit of the fitted curved surfaces may be equivalent to interference fit, it is not necessary for a middle plastic part to respectively connect the two connecting components, thus the cost may be reduced.
  • In addition, the two connecting components may be made of metal or plastic according to requirements. When the two connecting components are made in plastic, the bonding effect between the connecting components and corresponding shafts may be increased by setting axial slots for storing adhesive in the mounting holes.
  • It should be understood that, as configured herein, unless the context clearly supports exceptions, the singular forms "a" ("a" , "an" , "the" ) are intended to include the plural forms. It should also be understood that, "and /or" configured herein is intended to include any and all possible combinations of one or more of the associated listed items.
  • The number of the embodiments of the present application are only configured for description, and do not represent the merits of the implementations.
  • The foregoing description, for purpose of explanation, has been described with reference to specific examples. However, the illustrative discussions above are not intended to be exhaustive or to limit the present application to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The examples were chosen and described in order to best explain the principles of the present application and its practical applications, to thereby enable others skilled in the art to best utilize the present application and various examples with various modifications as are suited to the particular use contemplated.

Claims (9)

  1. A coupling part for connecting two shafts, characterized in that, comprising:
    a first connecting component comprising a first mounting hole and at least two first assembly structures arranged around the first mounting hole, wherein the first mounting hole is to be fixedly connected with a first shaft; and
    a second connecting component comprising a second mounting hole and at least two second assembly structures arranged around the second mounting hole, wherein the second mounting hole is to be fixedly connected with a second shaft, and the at least two second assembly structures are to be respectively connected with the at least two first assembly structures through fitted curved surfaces.
  2. The coupling part for connecting two shafts according to claim 1, characterized in that, wherein the curved surface is a cylindrical surface, or is a spherical surface, or includes a cylindrical surface and a hemispherical surface located at one end of the cylindrical surface and tangent to the cylindrical surface, or is an irregular curved surface.
  3. The coupling part for connecting two shafts according to claim 1, characterized in that, wherein each of the at least two first assembly structures comprises an assembly groove comprising an inner curved surface, each of the at least two second assembly structures comprises an assembly pin comprising an outer curved surface, and the inner curved surface is to fit the outer curved surface.
  4. The coupling part for connecting two shafts according to claims 1 to 3, characterized in that, wherein
    the first connecting component and the second connecting component are all metal components, and the first mounting hole is to be fixedly connected with the first shaft by interference fit, the second mounting hole is to be fixedly connected with the second shaft by interference fit.
  5. The coupling part for connecting two shafts according to claims 1 to 3, characterized in that, wherein
    the first connecting component and the second connecting component are all plastic components, and the first mounting hole is to be fixedly connected with the first shaft by adhesive, the second mounting hole is to be fixedly connected with the second shaft by adhesive.
  6. The coupling part for connecting two shafts according to claim 5, characterized in that, wherein the first connecting component further comprises: at least one axial slot distributed in the first mounting hole, and the second connecting component further comprises: at least one axial slot distributed in the second mounting hole.
  7. The coupling part for connecting two shafts according to claim 6, characterized in that, wherein the at least one axial slot are multiple axial slots distributed evenly.
  8. A mechanical transmission part, including a first shaft and a second shaft, characterized in that, further comprising a coupling part for connecting two shafts according to any one of claims 1 to 7.
  9. The mechanical transmission part according to claim 8, characterized in that, wherein the first shaft is a motor shaft, and the second shaft is an encoder shaft; or
    the first shaft is an encoder shaft, and the second shaft is a motor shaft.
EP23929198.2A 2023-03-28 2023-03-28 COUPLING PART FOR CONNECTING TWO SHAFTS AND MECHANICAL TRANSMISSION PART Pending EP4669876A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/084508 WO2024197599A1 (en) 2023-03-28 2023-03-28 Coupling part for connecting two shafts and mechanical transmission part

Publications (1)

Publication Number Publication Date
EP4669876A1 true EP4669876A1 (en) 2025-12-31

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Country Status (3)

Country Link
EP (1) EP4669876A1 (en)
CN (1) CN121127687A (en)
WO (1) WO2024197599A1 (en)

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CN202674075U (en) * 2012-03-09 2013-01-16 德昌电机(深圳)有限公司 Torque transmission combining device and coupling
CN103307125B (en) * 2012-03-09 2019-12-31 德昌电机(深圳)有限公司 Torque transmission combination and coupling
CN205371334U (en) * 2015-12-16 2016-07-06 常州市凯迪电器有限公司 Shaft coupling structure and linear actuator who has this shaft coupling structure
CN106917829A (en) * 2015-12-24 2017-07-04 宁波卡帝亚电器有限公司 A kind of yielding coupling
JP7215829B2 (en) * 2018-03-28 2023-01-31 株式会社荏原製作所 SHAFT COUPLING AND ROTATING DEVICE INCLUDING THE SHAFT COUPLING
CN109764066B (en) * 2019-03-21 2024-03-19 宁波新众汽车零部件有限公司 Flexible coupling
CN110219899A (en) * 2019-06-06 2019-09-10 大可精密齿轮(浙江)有限公司 A kind of novel coupler

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