Asynchronous coaxial double-output motion structure

Abstract

The invention discloses a non-synchronous coaxial double-output motion structure, which relates to the technical field of operating devices, and comprises a shell and a driving device arranged on the shell, and further comprises a transmission shaft arranged in the shell, one end of the transmission shaft is connected with the driving device, the driving device is used for driving the transmission shaft to move, and the other end of the transmission shaft is connected with the driving device. The other end of the transmission shaft extends out of the shell to be connected with first output equipment, second output equipment is arranged on the transmission shaft, located in the shell and movably connected with the shell, the first output equipment and the transmission shaft move synchronously, and the second output equipment and the transmission shaft do not move synchronously. The first output equipment and the second output equipment can share the transmission shaft to generate motion, and the second output equipment can have own motion law and does not need to be synchronous with the motion of the transmission shaft, so that coaxial and asynchronous double-motion output can be realized in a smaller equipment volume, and the application range of the dual-motion output device is greatly expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of operating devices, and more particularly to an asynchronous coaxial dual-output motion structure. Background Art

[0002] A servo is a motor system that continuously changes and maintains the angle of the output shaft within a certain range under program control. That is, the servo only supports rotation within a certain angle and cannot rotate in circles like an ordinary DC motor. Servos are suitable for situations where the position angle changes frequently, such as controlling and maintaining the rotation of an object (such as a robot joint). A servo is usually composed of a housing, a steering wheel, a DC motor, a reduction gear set, a position feedback device, a control circuit, and other structures. The steering wheel and the reduction gear set are connected by a gear shaft in this structure, and the gear shaft only drives the steering wheel. If additional motion is required, additional equipment such as a DC motor needs to be added, because the additional motion cannot be synchronized with the gear shaft of the steering wheel, and adding equipment alone will increase the size of the servo. Therefore, how to achieve asynchronous dual motion output using only one gear shaft is the technical problem to be solved by the present invention. Summary of the Invention

[0003] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially address the above-mentioned problems, the present invention provides an asynchronous coaxial dual-output motion structure, comprising: a housing, and a driving device disposed on the housing; and a transmission shaft disposed within the housing, one end of the transmission shaft being connected to the driving device, the driving device being used to drive the transmission shaft to move, the other end of the transmission shaft extending outside the housing and connected to a first output device, a second output device being disposed on the transmission shaft, the second output device being located within the housing and movably connected to the housing.

[0005] The first output device moves synchronously with the transmission shaft, and the second output device does not move synchronously with the transmission shaft.

[0006] Preferably, a first gear is provided at one end of the transmission shaft away from the first output device, a main shaft gear is provided on the output shaft of the driving device, and the first gear of the transmission shaft is meshed with the main shaft gear.

[0007] Preferably, a gear set is further included, and the first gear is connected to the main shaft gear through the gear set.

[0008] Preferably, a placement groove is provided on a side of the first gear away from the transmission shaft, the placement groove extends into the transmission shaft, and a sensor is provided in the placement groove.

[0009] Preferably, the second output device is composed of a transmission rod arranged on the transmission shaft and a transmission member arranged inside the housing, the transmission rod is provided with a connecting column, the transmission member is provided with a movable groove, the movable groove is an asymmetric groove, the connecting column extends from the transmission rod to the movable groove, and the transmission rod is movably connected to the transmission member through the connecting column.

[0010] Preferably, the transmission rod consists of a ring sleeve mounted on the transmission shaft, and an arm arranged on the outer wall of the ring sleeve, the arm extends from the ring sleeve toward the transmission member, and the end of the arm away from the ring sleeve is provided with a connecting hole for connecting to a connecting column, and the connecting column is arranged in the connecting hole.

[0011] Preferably, the transmission member is a second gear, the second gear is movably connected to the inner wall of the housing, the second gear is engaged with the first gear, and the movable groove is arranged around the rotation axis of the second gear.

[0012] Preferably, the movable groove is C-shaped and consists of a small diameter section, a transition section and a large diameter section, the small diameter section is an arc-shaped groove with a radius of r, the large diameter section is an arc-shaped groove with a radius of R, the small diameter section and the large diameter section have the same center, the small diameter section and the large diameter section are both inferior arcs, and the openings are arranged opposite to each other, one end of the transition section is connected to one end of the small diameter section, and the other end is connected to one end of the large diameter section.

[0013] Preferably, a limiting protrusion is provided on the outer side wall of the ring sleeve, the limiting protrusion is located on the side of the ring sleeve opposite to the arm, the limiting protrusion and the arm are located on the extension line of the same diameter of the ring sleeve, and an arc-shaped first limiting strip is provided on the side where the first gear is connected to the transmission shaft, and the limiting protrusion selectively abuts against the first limiting strip.

[0014] Preferably, the inner wall of the housing is provided with two limit blocks, the arm is located between the two limit blocks, and the arm selectively abuts against any one of the limit blocks.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] The first output device and the second output device can share a transmission shaft to generate motion, and the second output device can have its own motion rules and does not need to be synchronized with the motion of the transmission shaft. As a result, coaxial and asynchronous dual motion output can be achieved within a smaller device volume, greatly increasing the scope of application of this application.

[0017] The asynchronous coaxial dual-output motion structure described in the present invention, and other advantages, objectives and features of the present invention will be reflected in part through the following description, and will also be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic structural diagram of the asynchronous coaxial dual-output motion structure of the present invention (the first output device is not shown).

[0020] Figure 2 This is a schematic structural diagram of the asynchronous coaxial dual-output motion structure of the present invention (the first output device is not shown).

[0021] Figure 3 This is an exploded view of the asynchronous coaxial dual-output motion structure described in the present invention.

[0022] Figure 4 This is a schematic diagram of the structure inside the housing of the asynchronous coaxial dual-output motion structure of the present invention.

[0023] Figure 5 for Figure 4 Schematic diagram of the structure on the other side.

[0024] Figure 6 This is a front view of the structure inside the housing of the asynchronous coaxial dual-output motion structure described in the present invention.

[0025] Figure 7 for Figure 6 The front view of the transmission shaft, the first gear, the second gear and the transmission rod are not shown.

[0026] Figure 8 This is a schematic structural diagram of a portion of the housing in the asynchronous coaxial dual-output motion structure of the present invention.

[0027] Figure 9 Schematic diagram of the transmission rod and the second gear on the housing (the transmission shaft is not shown).

[0028] Figure 10 Schematic diagram of the transmission rod and the second gear on the housing.

[0029] Figure 11 This is the front view of the second gear.

[0030] Figure 12 Schematic diagram of the connection between the first gear, the second gear, the third gear and the transmission rod.

[0031] Figure 13 This is an exploded view of the first gear, second gear, third gear and transmission rod.

[0032] In the figure: 1 housing, 1a, 1b limit blocks, 2 driving device, 21 main shaft gear, 3 transmission shaft, 4 first gear, 41 first limit bar, 5 gear set, 6 sensor, 7 transmission rod, 71 ring sleeve, 72 arm, 73 limit protrusion, 8 second gear, 9 connecting column, 10 movable groove, 101 small diameter section, 102 transition section, 103 large diameter section, 11 third gear, 12 second limit bar, 13 limit groove. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0034] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0035] The present invention provides an asynchronous coaxial dual-output motion structure, comprising: a shell 1, and a driving device 2 arranged on the shell 1, and further comprising: a transmission shaft 3 arranged in the shell 1, one end of the transmission shaft 3 is connected to the driving device 2, and the driving device 2 is used to drive the transmission shaft 3 to move. The driving device 2 can be a DC motor or other commercially available products or existing technologies that can drive the transmission shaft 3 to move. It should be noted that the movement of the transmission shaft 3 can be rotation, extension and the like. Usually, when the present application is applied to the servo of an exhaust fan, the movement of the transmission shaft 3 is rotation, and the other end of the transmission shaft 3 extends to the outside of the shell 1 and is connected to the first output device. The first output device can be a steering wheel or other output device. A second output device is provided on the transmission shaft 3, and the second output device is located in the shell 1 and movably connected to the shell 1. The second output device can extend to the outside of the shell 1 and be connected to other devices, or can be as Figure 4 and Figure 5 As shown, it is arranged in the housing 1 and is used to drive the housing 1 to move.

[0036] The first output device moves synchronously with the transmission shaft 3. For example, if the first output device is a steering wheel, it can rotate synchronously with the transmission shaft 3. The second output device does not move synchronously with the transmission shaft 3. That is, when the transmission shaft 3 rotates, the second output device moves asynchronously with the rotation of the transmission shaft 3. For example, when the transmission shaft 3 rotates one-third of a turn, the second output device does not drive the housing 1 to move. When the transmission shaft 3 rotates from one-third to two-thirds of a turn, the second output device drives the housing 1 to move. When the transmission shaft 3 rotates from two-thirds to three-thirds of a turn, the second output device does not drive the housing 1 to move. The aforementioned asynchronous motion mode is only one of many embodiments and is used here as an example to illustrate the asynchronous motion between the second output device and the transmission shaft 3.

[0037] It also includes a gear set 5, and the first gear 4 is connected to the main shaft gear 21 through the gear set 5. The gear set 5 can be a reduction gear set or other commercially available products or existing technologies.

[0038] The working principle and beneficial effects of the above technical solution: Through the design of the above structure, the first output device and the second output device can share the transmission shaft 3 to generate movement, and the second output device can have its own movement rules and does not need to be synchronized with the movement of the transmission shaft 3. As a result, coaxial and asynchronous dual motion output can be achieved in a smaller device volume, greatly increasing the scope of application of this application.

[0039] Furthermore, taking the movement of the transmission shaft 3 as an example of rotation, a first gear 4 is provided at one end of the transmission shaft 3 away from the first output device, and a main shaft gear 21 is provided on the output shaft of the driving device 2. The first gear 4 of the transmission shaft 3 is engaged with the main shaft gear 21 (or the gear set 5), so that the transmission shaft 3 can rotate.

[0040] A placement groove is provided on a side of the first gear 4 away from the transmission shaft 3 , and the placement groove extends into the transmission shaft 3 . A sensor 6 is provided in the placement groove, and the sensor 6 may be a Hall sensor or other commercially available products or existing technologies.

[0041] Furthermore, taking the second output device driving the housing 1 to move as an example, the second output device is composed of a transmission rod 7 arranged on the transmission shaft 3 and a transmission member arranged inside the housing 1, and a connecting column 9 is provided on the transmission rod 7, and a movable groove 10 is provided on the transmission member. The movable groove 10 is an asymmetric groove. By setting the asymmetric groove, the movement trajectory of the connecting column 9 in the movable groove 10 is a nonlinear movement trajectory, thereby enabling the second output device to form an asynchronous motion output with the first output device. The connecting column 9 extends from the transmission rod 7 to the movable groove 10, and the transmission rod 7 is movably connected to the transmission member through the connecting column 9.

[0042] Furthermore, taking the second output device driving the housing 1 to rotate as an example, the transmission shaft 3 or the driving device 2 can be used as the rotation center, and the transmission rod 7 is composed of a ring sleeve 71 sleeved on the transmission shaft 3, and an arm 72 arranged on the outer wall of the ring sleeve 71. The ring sleeve 71 is movably connected to the transmission shaft 3, and the arm 72 extends from the ring sleeve 71 toward the direction of the transmission member. The end of the arm 72 away from the ring sleeve 71 is provided with a connecting hole for connecting with the connecting column 9, and the connecting column 9 is arranged in the connecting hole.

[0043] The transmission member is a second gear 8, which is movably connected to the inner wall of the housing 1 and meshes with the first gear 4. The movable groove 10 is arranged around the rotation axis of the second gear 8. When the transmission shaft 3 drives the first gear 4 to rotate, the first gear 4 drives the movable groove 10 to rotate, thereby causing the connecting column 9 to move within the movable groove 10, thereby changing the relative position of the arm 72 on the second gear 8. When the housing 1 rotates around the transmission shaft 3 (i.e., the transmission shaft 3 rotates but the position of its own central axis does not change), the second gear 8 can drive the housing 1 to rotate.

[0044] Furthermore, the movable groove 10 is C-shaped and consists of a small diameter section 101, a transition section 102 and a large diameter section 103. The small diameter section 101 is an arc groove with a radius of r, and the large diameter section 103 is an arc groove with a radius of R. The second gear 8, the small diameter section 101 and the large diameter section 103 have the same center. The small diameter section 101 and the large diameter section 103 are both inferior arcs, and the openings are arranged oppositely. One end of the transition section 102 is connected to one end of the small diameter section 101, and the other end is connected to one end of the large diameter section 103. Figure 11 As shown, by setting the small diameter section 101 and the large diameter section 103, when the first gear 4 drives the second gear 8 to rotate, the connecting column 9 will have a stroke located within the small diameter section 101 and the large diameter section 103. When the stroke of the connecting column 9 is located within the small diameter section 101 and the large diameter section 103, because the two are concentric with the second gear 8, when the connecting column 9 moves in the small diameter section 101 and the large diameter section 103, the relative position of the arm 72 and the second gear 8 remains unchanged. Only when the connecting column 9 moves in the transition section 102 will the relative position of the arm 72 and the second gear 8 change, thereby causing an idle stroke in the movement of the housing 1, thereby causing the second output device to be asynchronous with the first output device.

[0045] Furthermore, a limiting protrusion 73 can be provided on the outer side wall of the ring sleeve 71, and the limiting protrusion 73 is located on the side of the ring sleeve 71 opposite to the arm 72, and the limiting protrusion 73 and the arm 72 are located on the extension line of the same diameter of the ring sleeve 71. A first limiting bar 41 is provided on the side where the first gear 4 is connected to the transmission shaft 3. It should be noted that because the first limiting bar 41 is added to the first gear 4, a sliding groove for the movement of the first limiting bar 41 needs to be provided on the side of the arm 72 close to the first gear 4.

[0046] Furthermore, the first limiting strip 41 may be configured to be arc-shaped and located outside the ring sleeve 71 .

[0047] Furthermore, the inner wall of the housing 1 is provided with two limit blocks 1a, 1b, and the arm 72 is located between the two limit blocks 1a, 1b. Figure 9 and Figure 10 As shown, when the connecting column 9 is located at one end of the C-shaped movable groove 10 (the end of the small diameter section 101 away from the transition section 102, or the end of the large diameter section 103 away from the transition section 102), the arm 72 abuts against the limit block 1a (the connecting column 9 is located at the end of the small diameter section 101 away from the transition section 102) or the limit block 1b (the connecting column 9 is located at the end of the large diameter section 103 away from the transition section 102).

[0048] It is not difficult to see from the above embodiments that the asynchrony between the first output device and the second output device can be determined by the arc lengths of the small-diameter segment 101 and the large-diameter segment 103. In order to further increase the asynchrony rate between the second output device and the first output device, we have further optimized the second output device.

[0049] In this embodiment, a third gear 11 is further provided on the transmission shaft 3, and the third gear 11 is movably connected to the transmission shaft 3. The difference from the previous embodiment is that in this embodiment, the second gear 8 is not engaged with the first gear 4, but is engaged with the third gear 11, and the second gear 8 is driven to rotate by the third gear 11. Figure 12 and Figure 13As shown, the third gear 11 is provided with a second limiting strip 12 and a C-shaped limiting groove 13. The second limiting strip 12 and limiting groove 13 are respectively located on two end faces of the third gear 11 that are separated from each other. The end of the third gear 11 provided with the limiting groove 13 is in contact with the end of the first gear 4 provided with the first limiting strip 41. The first limiting strip 41 is located within the limiting groove 13. The limiting groove 13 is generally a major arc, and the limiting groove 13 and the first limiting strip 41 have the same center position and radius. As a result, the first gear 4 and the third gear 11 can rotate coaxially about the transmission shaft 3. Generally, the transmission ratio of the third gear 11 and the first gear 4 is the same. The shape and position of the second limiting strip 12 on the third gear 11 are both adapted to the first limiting strip 41. In this embodiment, the function of the second limiting strip 12 is the same as that of the first limiting strip 41 in the aforementioned embodiment, and both are used to abut against the limiting protrusion 73.

[0050] As the first gear 4 is rotated by the transmission shaft 3, the first limiting bar 41 moves within the limiting slot 13. For example, the two ends of the limiting slot 13 are end a and end b, respectively. The end surface of the first limiting bar 41 abutting end a is end surface a, and the end surface abutting end b is end surface b. During the movement of the first limiting bar 41 from end a to end b of the limiting slot 13, an idle stroke is formed, i.e., only the first limiting bar 41 moves within this stroke. When the end surface b of the first limiting bar 41 contacts end b of the limiting slot 13, the first limiting bar 41 can drive the third gear 11 to rotate, thereby driving the second gear 8 to rotate. This increases the idle stroke and further increases the asynchronous ratio between the first output device and the second output device. With the above-mentioned structural design, the idle stroke can be adjusted simply by adding a third gear 11.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An asynchronous coaxial dual-output motion structure, comprising: A housing (1), and a driving device (2) arranged on the housing (1), characterized in that it also includes: a transmission shaft (3) arranged in the housing (1), one end of the transmission shaft (3) is connected to the driving device (2), the driving device (2) is used to drive the transmission shaft (3) to move, the other end of the transmission shaft (3) extends to the outside of the housing (1) and is connected to a first output device, a second output device is arranged on the transmission shaft (3), the second output device is located in the housing (1) and is movably connected to the housing (1), The first output device moves synchronously with the transmission shaft (3), and the second output device does not move synchronously with the transmission shaft (3).

2. The asynchronous coaxial dual-output motion structure according to claim 1, characterized in that: A first gear (4) is provided at one end of the transmission shaft (3) away from the first output device, a main shaft gear (21) is provided on the output shaft of the driving device (2), and the first gear (4) of the transmission shaft (3) is meshed with the main shaft gear (21).

3. The asynchronous coaxial dual-output motion structure according to claim 2, characterized in that: It also includes a gear set (5), and the first gear (4) is connected to the main shaft gear (21) through the gear set (5).

4. The asynchronous coaxial dual-output motion structure according to claim 2, characterized in that: A placement groove is provided on a side of the first gear (4) away from the transmission shaft (3), the placement groove extends into the transmission shaft (3), and a sensor (6) is provided in the placement groove.

5. The asynchronous coaxial dual-output motion structure according to claim 2, characterized in that: The second output device is composed of a transmission rod (7) arranged on a transmission shaft (3) and a transmission member arranged inside the housing (1); a connecting column (9) is arranged on the transmission rod (7); a movable groove (10) is arranged on the transmission member; the movable groove (10) is an asymmetric groove; the connecting column (9) extends from the transmission rod (7) into the movable groove (10); and the transmission rod (7) is movably connected to the transmission member through the connecting column (9).

6. The asynchronous coaxial dual-output motion structure according to claim 5, characterized in that: The transmission rod (7) is composed of a ring sleeve (71) sleeved on the transmission shaft (3), and an arm (72) arranged on the outer side wall of the ring sleeve (71). The arm (72) extends from the ring sleeve (71) in the direction of the transmission member. One end of the arm (72) away from the ring sleeve (71) is provided with a connecting hole for connecting with a connecting column (9), and the connecting column (9) is arranged in the connecting hole.

7. The asynchronous coaxial dual-output motion structure according to claim 5, characterized in that: The transmission member is a second gear (8), which is movably connected to the inner wall of the housing (1), and the second gear (8) is meshed with the first gear (4). The movable groove (10) is arranged around the rotation axis of the second gear (8).

8. The asynchronous coaxial dual-output motion structure according to claim 7, characterized in that: The movable groove (10) is C-shaped and consists of a small diameter section (101), a transition section (102) and a large diameter section (103). The small diameter section (101) is an arc-shaped groove with a radius of r, and the large diameter section (103) is an arc-shaped groove with a radius of R. The center of the small diameter section (101) and the large diameter section (103) are the same. The small diameter section (101) and the large diameter section (103) are both inferior arcs, and the openings are arranged opposite to each other. One end of the transition section (102) is connected to one end of the small diameter section (101), and the other end is connected to one end of the large diameter section (103).

9. The asynchronous coaxial dual-output motion structure according to claim 6, characterized in that: A limiting protrusion (73) is provided on the outer wall of the ring sleeve (71), and the limiting protrusion (73) is located on the side of the ring sleeve (71) opposite to the arm (72). The limiting protrusion (73) and the arm (72) are located on the extension line of the same diameter of the ring sleeve (71). A first arc-shaped limiting strip (41) is provided on the side where the first gear (4) is connected to the transmission shaft (3), and the limiting protrusion (73) selectively abuts against the first limiting strip (41).

10. The asynchronous coaxial dual-output motion structure according to claim 9, characterized in that: The inner wall of the housing (1) is provided with two limit blocks (1a, 1b), the arm (72) is located between the two limit blocks (1a, 1b), and the arm (72) selectively abuts against any one of the limit blocks (1a, 1b).

Images