A non-synchronous coaxial dual-output motion structure

Abstract

The application discloses a kind of non-synchronous coaxial double-output motion structure, it is related to operating device technical field, including: shell, and drive equipment is set on shell, further including: transmission shaft is set in shell, one end of the transmission shaft is connected with drive equipment, the drive equipment is used to drive transmission shaft motion, the other end of the transmission shaft extends to the outside of shell and is connected with first output equipment, second output equipment is arranged on the transmission shaft, and the second output equipment is located in shell and is movably connected with shell, first output equipment and transmission shaft synchronous motion, second output equipment is not synchronous with transmission shaft motion.First output equipment and second output equipment can share transmission shaft to generate motion, and second output equipment can have its own motion law, without being synchronous with the motion of transmission shaft, so that in smaller device volume, coaxial different step double motion output can be realized, the application range of the application is greatly increased.

Description

Technical Field

[0001] This invention relates to the field of control device technology, and more specifically, to a non-synchronous coaxial dual-output motion structure. Background Technology

[0002] A servo motor is a motor system that continuously changes and maintains the angle of its output shaft within a certain range under program control. That is, a servo motor only supports rotation within a certain angle and cannot rotate in circles like a regular DC motor. Servos are suitable for applications where the position angle frequently changes, such as controlling the rotation and holding of objects (like robot joints). A servo motor typically consists of a housing, a servo disc, a DC motor, a reduction gear set, a position feedback device, and control circuitry. This structure uses a gear shaft connecting the servo disc and the reduction gear set. The gear shaft only drives the servo disc. If additional movements are required, additional equipment such as a DC motor is needed because the additional movements cannot be synchronized with the gear shaft of the servo disc. Adding additional equipment would increase the size of the servo motor. Therefore, how to achieve asynchronous dual-motion output using only a single gear shaft is the technical problem this invention aims to solve. Summary of the Invention

[0003] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical 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 solve the above problems, the present invention provides a asynchronous coaxial dual-output motion structure, comprising: a housing, and a drive device disposed on the housing, and further comprising: a transmission shaft disposed within the housing, one end of the transmission shaft being connected to the drive device for driving the transmission shaft to move, the other end of the transmission shaft extending outside the housing and connected to a first output device, and a second output device 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 drive shaft, while the second output device does not move synchronously with the drive shaft.

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

[0007] Preferably, it also includes a gear set, through which the first gear is connected to the main shaft gear.

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

[0009] Preferably, the second output device consists of a transmission rod disposed on a transmission shaft and a transmission component disposed inside the housing. The transmission rod is provided with a connecting post, and the transmission component is provided with a movable groove. The movable groove is an asymmetrical groove. The connecting post extends from the transmission rod into the movable groove, and the transmission rod is movably connected to the transmission component through the connecting post.

[0010] Preferably, the transmission rod consists of a ring sleeved on the transmission shaft and an arm disposed on the outer wall of the ring sleeve. The arm extends from the ring sleeve toward the transmission component, and the end of the arm away from the ring sleeve is provided with a connecting hole for connecting with a connecting post. The connecting post is disposed in the connecting hole.

[0011] Preferably, the transmission component is a second gear, which is movably connected to the inner wall of the housing, meshes 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, consisting 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, and the large diameter section is an arc-shaped groove with a radius of R. The centers of the small diameter section and the large diameter section are the same. Both the small diameter section and the large diameter section are minor arcs, and their openings are arranged opposite 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 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 same diameter extension line of the ring sleeve, and an arc-shaped first limiting strip is provided on the side of the first gear connected to the transmission shaft, the limiting protrusion selectively abutting against the first limiting strip.

[0014] Preferably, the inner wall of the housing is provided with two limiting blocks, the arm is located between the two limiting blocks, and the arm selectively abuts against either limiting block.

[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 the drive shaft to generate motion, and the second output device can have its own motion law, without needing to synchronize with the motion of the drive shaft. This allows for coaxial but asynchronous dual motion output within a small device size, greatly increasing the applicability of this application.

[0017] The asynchronous coaxial dual-output motion structure of the present invention, other advantages, objectives and features of the present invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the present invention. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

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

[0020] Figure 2 This is a schematic diagram of the asynchronous coaxial dual-output motion structure described in this 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 this invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the asynchronous coaxial dual-output motion structure described in this invention.

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

[0024] Figure 6 This is a front view of the internal structure of the non-synchronous coaxial dual-output motion structure described in this invention.

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

[0026] Figure 8 This is a schematic diagram of part of the outer shell in the asynchronous coaxial dual-output motion structure described in this invention.

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

[0028] Figure 10 This is a 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 This is a schematic diagram showing 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 diagram: 1. Outer shell, 1a, 1b. Limiting blocks, 2. Drive device, 21. Main shaft gear, 3. Transmission shaft, 4. First gear, 41. First limiting strip, 5. Gear set, 6. Sensor, 7. Transmission rod, 71. Ring sleeve, 72. Arm, 73. Limiting 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 limiting strip, 13. Limiting groove. Detailed Implementation

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

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

[0035] This invention provides a non-synchronous coaxial dual-output motion structure, comprising: a housing 1, and a drive device 2 disposed on the housing 1; further comprising: a transmission shaft 3 disposed within the housing 1, one end of the transmission shaft 3 being connected to the drive device 2, the drive device 2 being used to drive the transmission shaft 3 to move; the drive device 2 can be a DC motor or other commercially available products or existing technology capable of driving the transmission shaft 3 to move; it should be noted that the movement of the transmission shaft 3 can be rotation, extension, etc.; typically, when this application is used on the servo motor of an exhaust fan, the movement of the transmission shaft 3 is rotation; the other end of the transmission shaft 3 extends to the outside of the housing 1 and is connected to a first output device, which can be a servo disk or other output device; a second output device is disposed on the transmission shaft 3, the second output device being located inside the housing 1 and movably connected to the housing 1; the second output device can extend to the outside of the housing 1 and be connected to other devices, or as... Figure 4 and Figure 5 As shown, it is disposed inside the outer casing 1 and is used to drive the movement of the outer casing 1.

[0036] The first output device moves synchronously with the drive shaft 3. For example, when the first output device is a steering wheel, it can rotate synchronously with the drive shaft 3. The second output device does not move synchronously with the drive shaft 3. That is, when the drive shaft 3 rotates, the second output device exhibits a movement that is not synchronized with the rotation of the drive shaft 3. For example, when the drive shaft 3 rotates one-third of a turn, the second output device will not drive the housing 1 to move. When the drive shaft 3 rotates from one-third to two-thirds of a turn, the second output device will drive the housing 1 to move. When the drive shaft 3 rotates from two-thirds to three-thirds of a turn, the second output device will not drive the housing 1 to move. The aforementioned asynchronous movement is only one of many implementation methods and is only used here as an example to illustrate that the second output device and the drive shaft 3 are not synchronized.

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

[0038] The working principle and beneficial effects of the above technical solution are as follows: Through the design of the above structure, the first output device and the second output device can share the transmission shaft 3 to generate motion, and the second output device can have its own motion law without needing to synchronize with the motion of the transmission shaft 3. This enables coaxial asynchronous dual motion output to be realized within a small device volume, greatly increasing the applicability 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 the 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 drive device 2. The first gear 4 of the transmission shaft 3 meshes with the main shaft gear 21 (or gear set 5), thereby enabling the transmission shaft 3 to rotate.

[0040] The first gear 4 has a mounting groove on the side away from the transmission shaft 3. The mounting groove extends into the transmission shaft 3. A sensor 6 is installed in the mounting groove. The sensor 6 can be a Hall sensor or other commercially available products or existing technology.

[0041] Furthermore, taking the second output device driving the housing 1 to move as an example, the second output device consists of a transmission rod 7 set on the transmission shaft 3 and a transmission component set inside the housing 1. The transmission rod 7 is provided with a connecting post 9, and the transmission component is provided with a movable groove 10. The movable groove 10 is an asymmetrical groove. By setting the asymmetrical groove, the movement trajectory of the connecting post 9 in the movable groove 10 is a non-linear movement trajectory, thereby enabling the second output device to form asynchronous motion output with the first output device. The connecting post 9 extends from the transmission rod 7 into the movable groove 10, and the transmission rod 7 is movably connected to the transmission component through the connecting post 9.

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

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

[0044] Furthermore, the movable groove 10 is C-shaped, consisting 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 second gear 8, the small-diameter section 101, and the large-diameter section 103 have the same center. Both the small-diameter section 101 and the large-diameter section 103 are minor arcs, and their openings are arranged opposite 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. Figure 11 As shown, by setting the small diameter section 101 and the large diameter section 103 so that the first gear 4 drives the second gear 8 to rotate, the connecting column 9 will have a stroke within the small diameter section 101 and the large diameter section 103. When the stroke of the connecting column 9 is within the small diameter section 101 and the large diameter section 103, since the two are concentric with the second gear 8, the relative position of the arm 72 and the second gear 8 remains unchanged when the connecting column 9 moves within the small diameter section 101 and the large diameter section 103. Only when the connecting column 9 moves within the transition section 102 will the relative position of the arm 72 and the second gear 8 change. This causes the movement of the housing 1 to have a period of idle stroke, which in turn causes the second output device to be out of sync with the first output device.

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

[0046] Furthermore, the first limiting strip 41 can be set to an arc shape and located on the outside of the ring 71.

[0047] Furthermore, the inner wall of the outer casing 1 is provided with two limiting blocks 1a and 1b, and the arm 72 is located between the two limiting blocks 1a and 1b, as shown below. Figure 9 and Figure 10 As shown, when the connecting post 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 limiting block 1a (the end of the connecting post 9 located at the end of the small diameter section 101 away from the transition section 102) or the limiting block 1b (the end of the connecting post 9 located at the end of the large diameter section 103 away from the transition section 102).

[0048] As can be seen from the foregoing embodiments, 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 made further optimizations to the second output device.

[0049] In this embodiment, a third gear 11 is also provided on the transmission shaft 3. 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 does not mesh with the first gear 4, but meshes with the third gear 11. The third gear 11 drives the second gear 8 to rotate. 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 the limiting groove 13 are respectively located on two mutually distant end faces of the third gear 11. One end of the third gear 11 with the limiting groove 13 is in contact with the end of the first gear 4 with the first limiting strip 41. The first limiting strip 41 is located within the limiting groove 13. The limiting groove 13 is usually an arc, and the center position and radius of the limiting groove 13 and the first limiting strip 41 are the same. This allows the first gear 4 and the third gear 11 to rotate coaxially about the transmission shaft 3. Usually, 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 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 previous embodiment, both being used to abut against the limiting protrusion 73.

[0050] While the first gear 4 rotates, the first limiting bar 41 moves within the limiting groove 13. Taking the two ends of the limiting groove 13 as end a and end b respectively, the end face of the first limiting bar 41 that abuts against end a is called end face a, and the end face that abuts against end b is called end face b. During the process of the first limiting bar 41 moving from end a to end b of the limiting groove 13, a free stroke is formed, that is, only the first limiting bar 41 moves within this stroke. When the end face b of the first limiting bar 41 contacts end b of the limiting groove 13, the first limiting bar 41 can drive the third gear 11 to rotate, and then drive the second gear 8 to rotate. This can increase the free stroke and further increase the asynchrony rate between the first output device and the second output device. Through the above structural design, the free stroke can be adjusted by simply adding a third gear 11.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A non-synchronous coaxial dual-output motion structure, comprising: The housing (1) and the drive device (2) disposed on the housing (1) are characterized in that they further include: a transmission shaft (3) disposed inside the housing (1), one end of the transmission shaft (3) being connected to the drive device (2), the drive device (2) being used to drive the transmission shaft (3) to move, the other end of the transmission shaft (3) extending to the outside of the housing (1) and being connected to a first output device, a second output device being disposed on the transmission shaft (3), the second output device being located inside the housing (1) and being movably connected to the housing (1). The first output device moves synchronously with the drive shaft (3), while the second output device does not move synchronously with the drive shaft (3); A first gear (4) is provided at the 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 drive device (2). The first gear (4) of the transmission shaft (3) meshes with the main shaft gear (21). The second output device consists of a transmission rod (7) mounted on a transmission shaft (3) and a transmission component mounted inside the housing (1). A connecting post (9) is mounted on the transmission rod (7), and a movable groove (10) is mounted on the transmission component. The movable groove (10) is an asymmetrical groove. The connecting post (9) extends from the transmission rod (7) into the movable groove (10). The transmission rod (7) is movably connected to the transmission component through the connecting post (9). The transmission component is a second gear (8), which is movably connected to the inner wall of the outer casing (1). The second gear (8) meshes with the first gear (4), and the movable groove (10) is arranged around the rotation axis of the second gear (8). 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 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 minor arcs and their 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). The transmission rod (7) consists of a ring sleeve (71) sleeved on the transmission shaft (3) and an arm (72) disposed on the outer side wall of the ring sleeve (71); The inner wall of the outer shell (1) is provided with two limiting blocks (1a, 1b), and the arm (72) is located between the two limiting blocks (1a, 1b); When the connecting post (9) is located at one end of the small diameter section (101) away from the transition section (102), the arm (72) abuts against one of the limiting blocks (1a); When the connecting post (9) is located at one end of the large diameter section (103) away from the transition section (102), the arm (72) abuts against another limiting block (1b).

2. The asynchronous coaxial dual-output motion structure according to claim 1, characterized in that, It also includes a gear set (5), through which the first gear (4) is connected to the main shaft gear (21).

3. The asynchronous coaxial dual-output motion structure according to claim 1, characterized in that, The first gear (4) has a mounting groove on the side away from the transmission shaft (3), the mounting groove extends into the transmission shaft (3), and a sensor (6) is installed in the mounting groove.

4. The asynchronous coaxial dual-output motion structure according to claim 1, characterized in that, The arm (72) extends from the ring (71) toward the transmission member. The end of the arm (72) away from the ring (71) is provided with a connection hole for connecting with the connecting post (9). The connecting post (9) is disposed in the connection hole.

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

Images