Power device

Abstract

The utility model relates to a power device. Comprising a shell; the driving mechanism is arranged on the shell, the driving mechanism comprises an integrally-arranged driving shaft, and the driving shaft comprises a threaded section; the output piece is in sliding connection with the shell in the axial direction of the driving shaft, and the output piece is arranged on the threaded section in a sleeving mode and is in threaded connection with the threaded section; when the driving shaft rotates, the threaded section rotates to drive the output piece to slide relative to the shell. As the driving shaft is integrally arranged, the threaded section is integrally connected with other parts of the driving shaft, on one hand, a connecting structure between the threaded section and other parts of the driving shaft can be omitted, the power device is simpler in structure, the size of the power device is reduced, and the integrally arranged driving shaft has enough high structural strength. On the other hand, energy consumed by a connecting structure can be omitted, rotation of the driving shaft is more stable, energy consumption caused by vibration of the driving shaft is avoided, the energy utilization rate of the power device can be increased, and therefore the efficiency of the power device is improved.

Description

Technical Field

[0001] This application relates to the field of automation technology, and in particular to a power unit. Background Technology

[0002] Power units have extremely wide applications in the field of automation technology. They drive actuators such as robotic arms, enabling them to skillfully grasp objects. However, traditional power units are complex in structure and have relatively low energy utilization, resulting in drawbacks such as cumbersome structure and low efficiency. Utility Model Content

[0003] One of the technical problems addressed by this application is how to improve the efficiency of a power unit based on a simple structure.

[0004] A power unit, comprising:

[0005] case;

[0006] A drive mechanism is disposed on the housing, the drive mechanism including an integrally formed drive shaft, the drive shaft including a threaded section; and

[0007] The output component is slidably connected to the housing along the axial direction of the drive shaft, and the output component is sleeved on the threaded section and threadedly connected to the threaded section;

[0008] When the drive shaft rotates, the threaded section rotates to drive the output component to slide relative to the housing.

[0009] In one embodiment, the output component is integrally formed and is used to connect to an external actuator.

[0010] In one embodiment, the drive mechanism further includes spherical balls that are rotatably disposed between the output member and the threaded section.

[0011] In one embodiment, a first buffer is further included, which is disposed within the housing, and the output member passes through the housing, wherein one end of the output member located within the housing is capable of abutting against the first buffer along the axial direction of the output member.

[0012] In one embodiment, the housing includes a first housing and a second housing, the first housing being inserted into the second housing, the output member being slidably sleeved within the first housing, and the first buffer member being located within the second housing and abutting between the first housing and the second housing.

[0013] In one embodiment, the second housing includes a sleeve and a convex ring, the convex ring protruding from the inner wall surface of the sleeve; the first buffer member includes a first buffer cylinder and a first buffer pad, the first buffer pad protruding from the inner wall surface of the first buffer cylinder and supported on the convex ring; the first buffer cylinder is sleeved inside the sleeve and abuts against the end of the first housing between the convex ring and the first housing; the output member is capable of abutting against the first buffer pad; and the drive shaft passes through the convex ring and the first buffer pad.

[0014] In one embodiment, the housing further includes a limiting member, and mounting holes are provided on the sides of both the first housing and the sleeve, with the limiting member passing through the mounting holes.

[0015] In one embodiment, a second buffer is also included. The housing includes a detachably connected first shell and a top cover. The second buffer is disposed between the first shell and the top cover. The output member passes through the first shell, the top cover, and the second buffer. When the length of the output member extending beyond the top cover is at its maximum, the output member abuts against the second buffer along the axial direction of the output member.

[0016] In one embodiment, the second buffer member includes a second buffer cylinder and a second buffer pad. The second buffer pad protrudes from the inner wall of the second buffer cylinder and abuts against the top cover. The second buffer cylinder abuts between the first shell and the top cover. The output member includes a first output segment and a second output segment. The first output segment is housed within the first shell. The second output segment protrudes from one end of the first output segment and is used to connect with the actuator. The first output segment has a stepped surface surrounding the second output segment, and the stepped surface can abut against the second buffer pad.

[0017] In one embodiment, the drive mechanism further includes a gearbox and a stop member located within the housing. The drive shaft further includes a drive section and a connecting section. The connecting section is connected between the threaded section and the drive section. The drive section is connected to the gearbox and has an abutment surface surrounding the connecting section. An annular groove is provided on the side of the connecting section at a distance from the abutment surface. The stop member cooperates with the annular groove. The stop member and the abutment surface can abut against the housing or the gearbox.

[0018] One technical advantage of one embodiment of this application is that, given the integrated design of the drive shaft, the threaded section is integrally connected to the other parts of the drive shaft. This eliminates the need for connecting structures between the threaded section and other parts of the drive shaft, resulting in a simpler and smaller power unit structure. Furthermore, the integrated drive shaft possesses sufficiently high structural strength. On the other hand, it eliminates the energy consumed by connecting structures, and the rotation of the drive shaft is smoother, avoiding energy consumption due to drive shaft vibration. This improves the energy utilization rate of the power unit, thereby increasing its efficiency. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of a power unit provided in one embodiment.

[0020] Figure 2 for Figure 1 A schematic diagram of the planar cross-sectional structure of the power unit shown.

[0021] Figure 3 for Figure 1 A three-dimensional cross-sectional view of the power unit shown.

[0022] Figure 4 for Figure 1 The diagram shows a three-dimensional sectional view of the power unit after disassembly.

[0023] Figure 5 for Figure 1 A three-dimensional cross-sectional view of the second shell in the power unit shown.

[0024] Figure 6 for Figure 1 A three-dimensional structural diagram of the output component in the power unit shown.

[0025] Figure 7 for Figure 1 A three-dimensional structural diagram of the drive shaft in the power unit shown.

[0026] Reference numerals: power unit 10, housing 100, first housing 110, mounting hole 111, second housing 120, sleeve 121, convex ring 122, top cover 130, limiting member 140, drive mechanism 200, drive shaft 210, drive section 211, abutment surface 2111, connecting section 212, annular groove 2121, threaded section 213, gearbox 220, stop member 230, output member 300, first output section 310, stepped surface 311, second output section 320, first buffer member 410, first buffer cylinder 411, first buffer pad 412, second buffer member 420, second buffer cylinder 421, second buffer pad 422. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] See Figure 1 , Figure 2 and Figure 3 An embodiment of this application provides a power device 10 that can be used in conjunction with an actuator such as a robotic arm. Specifically, the power device 10 provides power to the actuator, thereby driving its movement. The power device 10 includes a housing 100, a drive mechanism 200, and an output component 300. The drive mechanism 200 is mounted on the housing 100 and includes a drive shaft 210 integrally formed. The drive shaft 210 includes a threaded section 213. The output component 300 is slidably connected to the housing 100 along the axial direction of the drive shaft 210. The output component 300 is sleeved on the threaded section 213, creating a threaded connection between the output component 300 and the threaded section 213. The drive shaft 210 is limited along its own axial direction, meaning it cannot move along its own axial direction; it can only rotate around its central axis. When the drive shaft 210 rotates, the threaded section 213 rotates to drive the output component 300 to slide relative to the housing 100, thereby causing the output component 300 to drive the actuator in linear motion. That is, the rotational motion of the drive shaft 210 and the threaded section 213 is converted into the linear motion of the output component 300. It can be understood that the drive shaft 210 and the output component 300 can be understood as components of the lead screw mechanism, that is, the drive shaft 210 is equivalent to the rotating shaft of the lead screw mechanism, and the output component 300 is equivalent to the nut of the lead screw mechanism.

[0034] If the threaded section is connected to other parts of the drive shaft separately, it will increase the connection structure between the threaded section and other parts of the drive shaft, making the power unit more structurally complex. Furthermore, during the rotation of the drive shaft, the vibration of this connection mechanism and the threaded section will consume energy, thereby reducing the energy utilization rate of the power unit and ultimately affecting its efficiency.

[0035] See Figure 1 , Figure 2 and Figure 3 Regarding the power unit 10 in the above embodiments, since the drive shaft 210 is integrally formed, the threaded section 213 is integrally connected to the other parts of the drive shaft 210. This eliminates the need for a connection structure between the threaded section 213 and the other parts of the drive shaft 210, making the power unit 10 structurally simpler and reducing its size. Furthermore, the integrally formed drive shaft 210 has sufficiently high structural strength. On the other hand, it saves energy consumed by the connection structure, and the rotation of the drive shaft 210 is smoother, avoiding energy consumption due to vibration. This improves the energy utilization rate of the power unit 10, thereby increasing its efficiency. Clearly, when the efficiency of the power unit 10 is improved, the output force of the output component 300 can be greater at the same power output.

[0036] See Figure 1 , Figure 2 and Figure 3 In some embodiments, the output component 300 is integrally formed and is used to connect with an external actuator. Connecting the output component 300 to the actuator as an integral unit simplifies the structure of the output component 300, thereby simplifying the structure and reducing the size of the power unit 10. It also improves the structural strength of the output component 300, and the integrally formed output component 300 operates more smoothly, thereby reducing energy inefficiency and improving energy utilization, further enhancing the efficiency of the power unit 10.

[0037] In some embodiments, the drive mechanism 200 further includes spherical balls that are rolled between the output member 300 and the threaded section 213. Given the presence of the balls, the screw mechanism can be understood as a ball screw mechanism. Since the balls reduce the frictional resistance generated by the relative motion between the output member 300 and the threaded section 213, this reduction in frictional resistance eliminates energy and improves the efficiency of the power unit 10, thereby increasing the driving force on the output member 300. Simultaneously, it makes the movement of the output member 300 smoother, thereby improving the accuracy of the reciprocating motion of the output member 300 relative to the housing 100.

[0038] See Figure 2 , Figure 3 and Figure 4In some embodiments, the power unit 10 further includes a first buffer 410 disposed within the housing 100. The output member 300 passes through the housing 100, and one end of the output member 300 located within the housing 100 can abut against the first buffer 410 along the axial direction of the output member 300. It can be understood that when the length of the output member 300 extending beyond the housing 100 is at its minimum, the output member 300 moves to its first limit position, at which point the end of the output member 300 abuts against the first buffer 410. The first buffer 410 has a certain degree of elasticity and flexibility. When the end of the output member 300 abuts against the first buffer 410, the first buffer 410 can undergo elastic deformation to absorb the impact energy of the output member 300, thereby preventing the impact force from being transmitted through the output member 300 to actuators such as the robotic arm, thus improving the stability and reliability of the output member 300's operation.

[0039] See Figure 3 , Figure 4 and Figure 5 In some embodiments, the housing 100 includes a first housing 110 and a second housing 120, which can be fixed by a detachable connection. The first housing 110 is inserted into the second housing 120, the output component 300 is slidably sleeved within the first housing 110, and the first buffer component 410 is located within the second housing 120 and abuts against the first housing 110 and the second housing 120. Therefore, the special structural design of the housing 100 facilitates the installation of the first buffer component 410.

[0040] See Figure 3 , Figure 4 and Figure 5In some embodiments, the second shell 120 includes a sleeve 121 and a protruding ring 122. The sleeve 121 may be generally cylindrical, and the protruding ring 122 protrudes from the inner wall of the sleeve 121, such that the protruding ring 122 protrudes a certain height relative to the sleeve 121 along an axial direction perpendicular to the sleeve 121. The first buffer member 410 includes a first buffer cylinder 411 and a first buffer pad 412. The first buffer cylinder 411 may be generally cylindrical, and the first buffer pad 412 protrudes from the inner wall of the first buffer cylinder 411, such that the first buffer pad 412 protrudes a certain height relative to the first buffer cylinder 411 along an axial direction perpendicular to the first buffer cylinder 411. The first buffer pad 412 is supported on the protruding ring 122, so the protruding ring 122 plays a good limiting role for the first buffer pad 412 and the entire first buffer member 410. The drive shaft 210 passes through the protruding ring 122 and the first buffer pad 412. The first buffer cylinder 411 is sleeved inside the sleeve 121, and the first buffer cylinder 411 abuts against the end of the first shell 110 and the convex ring 122 along the axial direction of the first buffer cylinder 411, thus effectively fixing the first buffer member 410. The end of the output member 300 can abut against the first buffer pad 412. When the output member 300 moves to the first limit position, the output member 300 will abut against the first buffer pad 412, thus reducing the impact energy and improving the stability and reliability of the output member 300's operation. Therefore, the combined action of the convex ring 122 and the first buffer pad 412 can both limit the stroke of the output member 300 and reduce the impact energy of the output member 300.

[0041] See Figure 3 , Figure 4 and Figure 5 In some embodiments, the housing 100 further includes a limiting member 140. Mounting holes 111 are simultaneously provided on the sides of both the first housing 110 and the sleeve 121, and the limiting member 140 passes through the mounting holes 111. The limiting member 140 can be a screw, rivet, or pin, etc. The limiting member 140 can extend along an axial direction perpendicular to the housing 100, thus effectively limiting the first housing 110 and preventing it from being pulled out of the second housing 120, thereby improving the stability and reliability of the connection between the first housing 110 and the second housing 120.

[0042] See Figure 3 , Figure 4 and Figure 5In some embodiments, the power unit 10 further includes a second buffer 420, and the housing 100 further includes a top cover 130. The top cover 130 is disposed at the end of the first housing 110 away from the second housing 120. The top cover 130 is detachably connected to the first housing 110, for example, by bolts or snap-fit ​​connections. The second buffer 420 is disposed between the first housing 110 and the top cover 130, and the output component 300 passes through the first housing 110, the top cover 130, and the second buffer 420. The second buffer 420 is spaced a certain distance from the first buffer 410 along the axial direction of the housing 100, allowing the output component 300 to slide within the space between the first buffer 410 and the second buffer 420 within the housing 100. When the length of the output component 300 extending beyond the top cover 130 is at its maximum, the output component 300 moves to a second limit position, and the output component 300 abuts against the second buffer 420 along the axial direction of the output component 300. The second buffer 420 has a certain degree of elasticity and flexibility. When the output component 300 comes into contact with the second buffer 420, the second buffer 420 can generate elastic deformation to absorb the impact energy of the output component 300, thereby preventing the impact force from being transmitted to the robotic arm and other actuators through the output component 300, thus improving the stability and reliability of the operation of the output component 300.

[0043] See Figure 4 and Figure 6 In some embodiments, the second buffer 420 includes a second buffer cylinder 421 and a second buffer pad 422. The second buffer pad 422 protrudes from the inner wall of the second buffer cylinder 421 and abuts against the top cover 130 along the axial direction of the housing 100. The second buffer cylinder 421 abuts against the first housing 110 and the top cover 130 along the axial direction of the housing 100. The output member 300 includes a first output section 310 and a second output section 320. The first output section 310 and the second output section 320 are coaxially arranged. The cross-sectional dimension of the first output section 310 is larger than that of the second output section 320. The first output section 310 can always be housed within the first housing 110. A portion of the second output section 320 can be exposed outside the housing 100. The second output section 320 protrudes from the end face of the first output section 310. The portion of the end face of the first output section 310 not covered by the second output section 320 forms a stepped surface 311, which surrounds the second output section 320. When the output component 300 moves to the second limit position, the stepped surface 311 can abut against the second buffer pad 422. This reduces impact energy and improves the stability and reliability of the output component 300. Therefore, the combined action of the top cover 130 and the second buffer pad 422 can both limit the stroke of the output component 300 and reduce its impact energy.

[0044] See Figure 4 and Figure 7In some embodiments, the drive mechanism 200 further includes a gearbox 220 and a stop 230, both located within the housing 100. The drive shaft 210 further includes a drive section 211 and a connecting section 212. The drive section 211, connecting section 212, and threaded section 213 can be coaxially arranged. The two ends of the connecting section 212 are connected to the threaded section 213 and the drive section 211, respectively, meaning the connecting section 212 is located between the drive section 211 and the threaded section 213, thus connecting the connecting section 212 between the threaded section 213 and the drive section 211. The cross-sectional dimensions of the connecting section 212 and the threaded section 213 can be equal, with the cross-sectional dimension of the drive section 211 being larger than that of the connecting section 212. The connecting section 212 protrudes from the end face of the driving section 211. The portion of the end face of the driving section 211 not covered by the connecting section 212 forms an abutment surface 2111, which surrounds the connecting section 212. An annular groove 2121 is formed on the side of the connecting section 212. The stop 230 engages with the annular groove 2121, allowing the connecting section 212 to rotate relative to the stop 230. The stop 230 and the abutment surface 2111 can abut against the housing 100 or the gearbox 220. Therefore, by providing the stop 230 and the abutment surface 2111, the drive shaft 210 can be effectively limited along its axial direction, preventing slippage and ensuring that the drive shaft 210 can only rotate around its central axis. This effectively converts the rotation of the drive shaft 210 into the sliding of the output component 300.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A power unit, characterized in that, include: case; A drive mechanism is disposed on the housing, the drive mechanism including an integrally formed drive shaft, the drive shaft including a threaded section; and The output component is slidably connected to the housing along the axial direction of the drive shaft, and the output component is sleeved on the threaded section and threadedly connected to the threaded section; When the drive shaft rotates, the threaded section rotates to drive the output component to slide relative to the housing.

2. The power unit according to claim 1, characterized in that, The output component is integrally formed and is used to connect with an external actuator.

3. The power unit according to claim 1, characterized in that, The drive mechanism also includes spherical balls that are rotatably disposed between the output component and the threaded section.

4. The power unit according to claim 1, characterized in that, It also includes a first buffer member disposed within the housing, and the output member passing through the housing. One end of the output member located within the housing is capable of abutting against the first buffer member along the axial direction of the output member.

5. The power unit according to claim 4, characterized in that, The housing includes a first housing and a second housing, the first housing is inserted into the second housing, the output component is slidably sleeved in the first housing, and the first buffer component is located in the second housing and abuts between the first housing and the second housing.

6. The power unit according to claim 5, characterized in that, The second housing includes a sleeve and a convex ring. The convex ring protrudes from the inner wall of the sleeve. The first buffer includes a first buffer cylinder and a first buffer pad. The first buffer pad protrudes from the inner wall of the first buffer cylinder and is supported on the convex ring. The first buffer cylinder is sleeved inside the sleeve and abuts against the end of the first housing between the convex ring and the first housing. The output component can abut against the first buffer pad. The drive shaft passes through the convex ring and the first buffer pad.

7. The power unit according to claim 6, characterized in that, The housing also includes a limiting member. Both the first housing and the sleeve have mounting holes on their sides, and the limiting member passes through the mounting holes.

8. The power unit according to claim 1, characterized in that, It also includes a second buffer. The housing includes a first shell and a top cover that are detachably connected. The second buffer is disposed between the first shell and the top cover. The output member passes through the first shell, the top cover and the second buffer. When the length of the output member extending beyond the top cover is at its maximum, the output member abuts against the second buffer along the axial direction of the output member.

9. The power unit according to claim 8, characterized in that, The second buffer includes a second buffer cylinder and a second buffer pad. The second buffer pad protrudes from the inner wall of the second buffer cylinder and abuts against the top cover. The second buffer cylinder abuts between the first shell and the top cover. The output includes a first output segment and a second output segment. The first output segment is housed in the first shell. The second output segment protrudes from one end of the first output segment and is used to connect with the actuator. The first output segment has a stepped surface surrounding the second output segment, and the stepped surface can abut against the second buffer pad.

10. The power unit according to claim 1, characterized in that, The drive mechanism further includes a gearbox and a stop member located within the housing. The drive shaft further includes a drive section and a connecting section. The connecting section is connected between the threaded section and the drive section. The drive section is connected to the gearbox and has an abutment surface surrounding the connecting section. An annular groove is provided on the side of the connecting section at a distance from the abutment surface. The stop member cooperates with the annular groove. The stop member and the abutment surface can abut against the housing or the gearbox.

Images