Transmission assembly

Abstract

The present disclosure provides a transmission assembly, comprising: a driving wheel support; a driving device, the driving device being used for providing a driving force, and the driving device being in transmission connection with a first driving wheel; a clutch shaft, wherein the clutch shaft is rotatably arranged on the driving wheel support, a first driven wheel and a second driving wheel are provided on the clutch shaft, the first driven wheel can rotate with respect to the clutch shaft, and the second driving wheel and the clutch shaft rotate synchronously; a driving wheel shaft, the driving wheel shaft being rotatably arranged on the driving wheel support, a second driven wheel being provided on the driving wheel shaft, and the second driven wheel and the driving wheel shaft rotating synchronously; and a clutch, the clutch being configured to: when the clutch is in a disengaged state, the first driven wheel freely rotates on the clutch shaft, and when the clutch is in an engaged state, the first driven wheel and the clutch shaft rotate synchronously.

Description

Transmission components Technical Field

[0001] The present disclosure relates to a transmission assembly. Background Art

[0002] Intelligent navigation mobile robots (service robots or cleaning robots) are popular technology products at this stage. Generally, the driving wheels use hub motors or reduction motors. However, when using reduction motors to drag the robot, the resistance will be very large, which makes it inconvenient to manually drag the robot.

[0003] The existing intelligent navigation mobile robot drive wheels use electric clutches. When transporting or assisting in moving to a designated location for service, the electric clutch will disconnect the reduction motor (connection to the drive device) to make the machine easier to drag.

[0004] Therefore, the robot needs to disconnect the clutch before the battery runs out to facilitate manual towing, which places relatively high demands on the system logic control. Summary of the Invention

[0005] In order to solve one of the above technical problems, the present disclosure provides a transmission assembly.

[0006] According to one aspect of the present disclosure, there is provided a transmission assembly comprising:

[0007] Drive wheel bracket,

[0008] A driving device, the driving device is used to provide driving force, wherein the driving device is drivingly connected to the first driving wheel;

[0009] A clutch shaft, the clutch shaft being rotatably disposed on the drive wheel bracket, wherein a first driven wheel and a second driving wheel are disposed on the clutch shaft, the first driven wheel being rotatable relative to the clutch shaft, and the second driving wheel rotating synchronously with the clutch shaft;

[0010] A driving wheel shaft, the driving wheel shaft being rotatably disposed on the driving wheel bracket, the driving wheel shaft being provided with a second driven wheel, the second driven wheel rotating synchronously with the driving wheel shaft;

[0011] The clutch is configured such that: when the clutch is in a disengaged state, the first driven wheel rotates freely on the clutch shaft; when the clutch is in an engaged state, the first driven wheel rotates synchronously with the clutch shaft.

[0012] According to the transmission assembly of at least one embodiment of the present disclosure, the clutch includes a clutch plate, which is arranged on the clutch shaft and rotates synchronously with the clutch shaft; the clutch plate is arranged to be able to slide along the axial direction of the clutch shaft, and has a first position and a second position. When the clutch plate is in the first position, the clutch plate is engaged with the first driven wheel, and when the clutch plate is in the second position, the clutch plate is disengaged from the first driven wheel.

[0013] According to the transmission assembly of at least one embodiment of the present disclosure, the clutch plate is carried by a support frame, and the clutch plate moves between the first position and the second position through the movement of the support frame.

[0014] According to the transmission assembly of at least one embodiment of the present disclosure, the support frame is configured to slide along the inner wall surface of the driving wheel bracket.

[0015] According to the transmission assembly of at least one embodiment of the present disclosure, the clutch further includes: a clutch motor, which is used to drive the support frame to move so that the clutch plate moves between the first position and the second position.

[0016] According to the transmission assembly of at least one embodiment of the present disclosure, the clutch motor is arranged on the driving wheel bracket, and the output shaft of the clutch motor is provided with a cam. When the cam rotates, the support frame is driven to move along the axial direction of the clutch shaft.

[0017] According to the transmission assembly of at least one embodiment of the present disclosure, the clutch further includes a return spring, the return spring is disposed between the support bracket and the drive wheel bracket, and the return spring is in a pre-compressed state.

[0018] According to the transmission assembly of at least one embodiment of the present disclosure, a toothed portion is formed on the surface of the clutch plate close to the first driven wheel; a toothed portion is formed on the surface of the first driven wheel close to the clutch plate, and when the clutch plate is in the first position, the toothed portion of the clutch plate and the toothed portion of the first driven wheel are engaged with each other.

[0019] According to the transmission assembly of at least one embodiment of the present disclosure, a retaining spring is provided on the clutch shaft, and the retaining spring is used to limit the axial position of the first driven wheel on the clutch shaft.

[0020] According to the transmission assembly of at least one embodiment of the present disclosure, the first driving wheel, the first driven wheel, the second driving wheel and the second driven wheel are all synchronous pulleys; the first driving wheel and the first driven wheel are connected by a first synchronous belt transmission, and the second driving wheel and the second driven wheel are connected by a second synchronous belt transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0022] FIG1 is a schematic diagram of an exploded structure of a transmission assembly according to one embodiment of the present disclosure.

[0023] FIG2 is a schematic structural diagram of a clutch according to an embodiment of the present disclosure.

[0024] FIG3 is a schematic structural diagram of a clutch in a disengaged state according to an embodiment of the present disclosure.

[0025] FIG4 is a schematic structural diagram of a clutch in an engaged state according to an embodiment of the present disclosure.

[0026] The specific reference numerals in the figure are:

[0027] 101 driving wheel bracket

[0028] 102 drive unit

[0029] 103 First driving wheel

[0030] 104 clutch shaft

[0031] 105 First driven wheel

[0032] 106 Second driving wheel

[0033] 107 drive axle

[0034] 108 Upper cover

[0035] 109 circlip

[0036] 110 Second driven wheel

[0037] 111 First Synchronous Belt

[0038] 112 Second synchronous belt

[0039] 120 Clutch

[0040] 121 Clutch Plate

[0041] 122 support frame

[0042] 123 Clutch Motor

[0043] 124 Cam

[0044] 125 Return spring. DETAILED DESCRIPTION

[0045] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0046] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0048] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0049] When a component is referred to as being “on,” “over,” “connected to,” or “coupled to” another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another component, there are no intervening components present. For this purpose, the term “connected” may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0050] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "under," "down," "above," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be positioned "above" the other component or feature. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0051] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0052] FIG1 is a schematic diagram of an exploded structure of a transmission assembly according to one embodiment of the present disclosure.

[0053] As shown in FIG1 , the present disclosure provides a transmission assembly, which includes: a driving wheel bracket 101 , a driving device 102 , a clutch shaft 104 , a driving wheel shaft 107 , a clutch 120 and other components.

[0054] The driving wheel bracket 101 of the present disclosure can be fixed to the main body of the robot when in use, and can support components such as the driving device 102, the clutch shaft 104, the driving wheel shaft 107, and the clutch 120. For example, the driving wheel bracket 101 can be provided with an upper cover 108, and accordingly, a storage space can be formed between the driving wheel bracket 101 and the upper cover 108, and the driving device 102, the clutch shaft 104, the driving wheel shaft 107, and the clutch 120 are all arranged in the storage space.

[0055] The drive device 102 is used to provide driving force. In a specific embodiment, the drive device 102 can be a motor, preferably a DC motor. The drive device 102 is connected to the first driving wheel 103; for example, the first driving wheel 103 is disposed on the output shaft of the drive device 102 and is driven to rotate by the drive device 102.

[0056] The clutch shaft 104 is rotatably arranged on the driving wheel bracket 101; in a preferred embodiment, the driving wheel bracket 101 and the upper cover 108 are both provided with bearing seats, and bearings are provided in the bearing seats. The two ends of the clutch shaft 104 are respectively supported by the bearings, so that the clutch shaft 104 can rotate freely.

[0057] A first driven wheel 105 and a second driving wheel 106 are provided on the clutch shaft 104. The first driven wheel 105 can rotate relative to the clutch shaft 104, that is, the first driven wheel 105 can rotate freely, and the second driving wheel 106 rotates synchronously with the clutch shaft 104, that is, the second driving wheel 106 is driven to rotate by the clutch shaft 104; in a preferred embodiment, the first driven wheel 105 can be limited in its axial position on the clutch shaft 104 by a retaining spring 109 provided on the clutch shaft 104, and the second driving wheel 106 can be limited in its axial position on the clutch shaft 104 by a shaft shoulder of the clutch shaft 104.

[0058] The driving wheel shaft 107 is rotatably arranged on the driving wheel bracket 101. In a preferred embodiment, the driving wheel bracket 101 and the upper cover 108 are both provided with bearing seats, and bearings are provided in the bearing seats. One end of the driving wheel shaft 107 is supported by the bearing, and the middle is supported by another bearing. Accordingly, the other end of the driving wheel shaft 107 extends to the outside of the driving wheel bracket 101. At this time, the other end of the driving wheel shaft 107 can be installed with a driving wheel so that the robot can walk.

[0059] The driving wheel shaft 107 is provided with a second driven wheel 110 , and the second driven wheel 110 rotates synchronously with the driving wheel shaft 107 ; that is, the second driven wheel 110 can drive the driving wheel shaft 107 to rotate.

[0060] In the present disclosure, the clutch 120 is configured such that when the clutch 120 is in a disengaged state, the first driven wheel 105 rotates freely on the clutch shaft 104 ; and when the clutch 120 is in an engaged state, the first driven wheel 105 rotates synchronously with the clutch shaft 104 .

[0061] The first driving wheel 103, the first driven wheel 105, the second driving wheel 106 and the second driven wheel 110 are all synchronous pulleys; accordingly, the first driving wheel 103 and the first driven wheel 105 are connected by a first synchronous belt 111, and the second driving wheel 106 and the second driven wheel 110 are connected by a second synchronous belt 112.

[0062] The structure of the clutch disclosed herein is described in detail below with reference to the accompanying drawings.

[0063] Figure 2 is a schematic diagram of the structure of a clutch according to an embodiment of the present disclosure. Figure 3 is a schematic diagram of the structure of a clutch in a disengaged state according to an embodiment of the present disclosure. Figure 4 is a schematic diagram of the structure of a clutch in an engaged state according to an embodiment of the present disclosure.

[0064] As shown in FIG. 2 to FIG. 4 , the clutch may include a clutch plate 121 , a support frame 122 , a clutch motor 123 , a cam 124 and a return spring 125 .

[0065] The clutch plate 121 is arranged on the clutch shaft 104 and rotates synchronously with the clutch shaft 104; the clutch plate 121 is configured to be able to slide along the axial direction of the clutch shaft 104, and has a first position and a second position. When the clutch plate 121 is in the first position (the position shown in Figure 4), the clutch plate 121 is engaged with the first driven wheel 105, and when the clutch plate 121 is in the second position (the position shown in Figure 3), the clutch plate 121 is disengaged from the first driven wheel 105.

[0066] In a preferred embodiment, a toothed portion is formed on the surface of the clutch plate 121 close to the first driven wheel 105; correspondingly, a toothed portion is also formed on the surface of the first driven wheel 105 close to the clutch plate 121. When the clutch plate 121 is in the first position, the toothed portion of the clutch plate 121 and the toothed portion of the first driven wheel 105 can engage with each other, so that power can be transmitted to the clutch plate 121 through the first driven wheel 105, and further cause the clutch shaft 104 to rotate; when the clutch plate 121 is in the second position, the toothed portion of the clutch plate 121 and the toothed portion of the first driven wheel 105 are separated from each other.

[0067] In the present disclosure, the clutch plate 121 is supported by a support frame 122, and the movement of the support frame 122 enables the clutch plate 121 to move between a first position and a second position. More specifically, the support frame 122 is configured to slide along the inner wall surface of the drive wheel bracket 101. In other words, the support frame 122 is configured to move along the axial direction of the clutch shaft 104 and does not rotate.

[0068] The clutch motor 123 is used to drive the support frame 122 to move, so that the clutch plate 121 moves between the first position and the second position.

[0069] More specifically, the clutch motor 123 is disposed on the drive wheel bracket 101. A cam 124 is provided on the output shaft of the clutch motor 123. The rotation axis of the cam 124 is perpendicular to the axial direction of the clutch shaft 104. Accordingly, when the cam 124 rotates, the support bracket 122 is driven to move along the axial direction of the clutch shaft 104. In a preferred embodiment, the cam 124 can be an eccentric wheel.

[0070] The clutch 120 also includes a return spring 125, which is arranged between the support frame 122 and the drive wheel bracket 101, and the return spring 125 is in a pre-compressed state; that is, the return force provided by the return spring 125 can enable the clutch plate 121 to move from the second position to the first position, thereby realizing the separation and engagement function of the clutch.

[0071] The transmission assembly of the present disclosure utilizes a clutch principle. When the robot is being dragged, the clutch is disengaged, making it easier to tow without the reverse resistance of the drive unit. When the robot is ready for operation, the clutch is engaged, enabling autonomous movement. In particular, the provision of a clutch motor allows for automatic clutch control without the need for human intervention.

[0072] In the present disclosure, the clutch may further include a microswitch for detecting the position of the clutch plate 121. Accordingly, the microswitch may be set to two. When the clutch plate 121 is in the first position, one of the microswitches is triggered. Accordingly, when the clutch plate 121 is in the second position, the other microswitch is triggered.

[0073] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0075] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A transmission assembly, characterized in that: include: Drive wheel bracket, A driving device, the driving device is used to provide driving force, wherein the driving device is drivingly connected to a first driving wheel; A clutch shaft, the clutch shaft is rotatably disposed on the driving wheel bracket, wherein a first driven wheel and a second driving wheel are disposed on the clutch shaft, the first driven wheel can rotate relative to the clutch shaft, and the second driving wheel rotates synchronously with the clutch shaft; A driving wheel shaft, wherein the driving wheel shaft is rotatably disposed on the driving wheel bracket, and a second driven wheel is disposed on the driving wheel shaft, and the second driven wheel rotates synchronously with the driving wheel shaft; and The clutch is configured such that: when the clutch is in a disengaged state, the first driven wheel rotates freely on the clutch shaft; when the clutch is in an engaged state, the first driven wheel rotates synchronously with the clutch shaft.

2. The transmission assembly according to claim 1, characterized in that: The clutch includes a clutch plate, which is arranged on the clutch shaft and rotates synchronously with the clutch shaft; the clutch plate is arranged to be able to slide along the axial direction of the clutch shaft and has a first position and a second position. When the clutch plate is in the first position, the clutch plate is engaged with the first driven wheel, and when the clutch plate is in the second position, the clutch plate is disengaged from the first driven wheel.

3. The transmission assembly according to claim 2, characterized in that: The clutch plate is carried by the support frame, and the clutch plate moves between the first position and the second position through the movement of the support frame.

4. The transmission assembly according to claim 3, characterized in that: The support frame is configured to slide along the inner wall surface of the driving wheel bracket.

5. The transmission assembly according to claim 3, characterized in that: The clutch further comprises: a clutch motor, and the clutch motor is used to drive the support frame to move so that the clutch plate moves between the first position and the second position.

6. The transmission assembly according to claim 5, characterized in that: The clutch motor is arranged on the driving wheel bracket, and the output shaft of the clutch motor is provided with a cam. When the cam rotates, the support frame is driven to move along the axial direction of the clutch shaft.

7. The transmission assembly according to claim 3, characterized in that: The clutch also includes a return spring, which is arranged between the support frame and the driving wheel bracket, and the return spring is in a pre-compressed state.

8. The transmission assembly according to claim 2, characterized in that: A toothed portion is formed on the surface of the clutch plate close to the first driven wheel; a toothed portion is formed on the surface of the first driven wheel close to the clutch plate, and when the clutch plate is located at the first position, the toothed portion of the clutch plate meshes with the toothed portion of the first driven wheel.

9. The transmission assembly according to claim 1, characterized in that: The clutch shaft is provided with a retaining spring, and the retaining spring is used to limit the axial position of the first driven wheel on the clutch shaft.

10. The transmission assembly according to claim 1, characterized in that: The first driving wheel, the first driven wheel, the second driving wheel and the second driven wheel are all synchronous pulleys; the first driving wheel and the first driven wheel are connected by a first synchronous belt transmission, and the second driving wheel and the second driven wheel are connected by a second synchronous belt transmission.

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