A drive mechanism, a micro electric cylinder, and a device having the micro electric cylinder

Abstract

The application discloses a driving mechanism, a micro electric cylinder and a device with the micro electric cylinder, and belongs to the technical field of electric cylinders. The driving mechanism comprises a sliding rail, a driving piece, a rotating piece, a first sliding piece and a second sliding piece. The output end of the driving piece is connected with the rotating piece and is used for driving the rotating piece to rotate. The first sliding piece is sleeved on the outer periphery of the rotating piece and is threadedly connected with the rotating piece. The second sliding piece is integrally formed with the first sliding piece or is connected through clamping. The second sliding piece is slidably connected with the sliding rail. The driving mechanism provided by the application guarantees the linear motion precision of the first sliding piece.

Description

Technical Field

[0001] This application relates to the field of electric cylinder technology, and more particularly to a drive mechanism, a miniature electric cylinder, and a device having a miniature electric cylinder. Background Technology

[0002] Electric cylinders are commonly used mechanical components in motion control. They are generally modular products with an integrated design of a servo motor and a lead screw, converting the rotary motion of the servo motor into linear motion. They are mostly used for horizontal handling and vertical lifting of objects, and mainly consist of a motor, lead screw, nut, slider, and guide rail. The working principle is that the controller controls the motor's speed and revolutions, the motor drives the lead screw to rotate, and the lead screw in turn drives the nut to move the slider linearly along the guide rail.

[0003] In existing technology, the slider and nut are generally fastened together with screws to enable synchronous linear movement. However, this connection method is prone to screw loosening during long-term use, which affects the stability and reliability of the connection between the slider and nut, thereby affecting the accuracy of the nut's linear movement. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a drive mechanism.

[0005] To solve the above-mentioned technical problems, this application provides: A drive mechanism, comprising: Slide rail; Drive components; A rotating component, wherein the output end of the driving component is connected to the rotating component for driving the rotating component to rotate; A first sliding member is sleeved on the outer periphery of the rotating member and is threadedly connected to the rotating member; The second sliding member is integrally formed or snap-fitted with the first sliding member, and the second sliding member is slidably connected to the slide rail.

[0006] In addition, the drive mechanism according to this application may also have the following additional technical features: In some embodiments of this application, the second slider is integrally formed with the first slider.

[0007] In some embodiments of this application, the second slider is snapped into connection with the first slider.

[0008] In some embodiments of this application, the second sliding member is provided with a latching protrusion, and the outer peripheral wall of the first sliding member is provided with a latching groove that engages with the latching protrusion; Alternatively, the second sliding member may have a slot, and the outer peripheral wall of the first sliding member may have a protrusion that engages with the slot.

[0009] In some embodiments of this application, the slot includes a bottom wall and two side walls, the two side walls being connected to opposite sides of the bottom wall respectively, both side walls being inclined from the direction close to the bottom wall to the direction away from the bottom wall, and the inclination directions of the two side walls being close to each other, the shape of the protrusion being adapted to the slot, the end wall of the first sliding member having an assembly opening communicating with the slot, and the protrusion being disposed in the slot through the assembly opening.

[0010] In some embodiments of this application, the slot includes a bottom wall and two side walls. The two side walls are respectively connected to opposite sides of the bottom wall. Each of the two side walls has a limiting protrusion at the end away from the bottom wall. The two limiting protrusions extend close to each other to restrict the card protrusion from leaving the slot in a direction away from the bottom wall. The shape of the card protrusion is adapted to the slot. The end wall of the first sliding member has an assembly opening communicating with the slot. The card protrusion passes through the assembly opening and is disposed in the slot.

[0011] In some embodiments of this application, the driving mechanism further includes a driving wheel and a first transmission wheel. The driving wheel is fixedly connected to the output end of the driving member, and the first transmission wheel is fixedly connected to the rotating member. The driving wheel and the first transmission wheel are meshed together.

[0012] In some embodiments of this application, the driving mechanism further includes a drive shaft, a second drive wheel, and a third drive wheel. The second drive wheel and the third drive wheel are both fixedly connected to the drive shaft. The second drive wheel is meshed with the drive wheel, and the third drive wheel is meshed with the first drive wheel.

[0013] Secondly, this application also provides a miniature electric cylinder, including the drive mechanism described in any of the above embodiments.

[0014] Thirdly, this application also provides a device with a miniature electric cylinder, including the miniature electric cylinder described in the above embodiments.

[0015] Compared to existing technologies, the beneficial effects of this application are: This application proposes a driving mechanism in which the output end of the driving component drives a rotating component to rotate during operation. Under the action of the threaded connection between the rotating component and the first sliding component, the first sliding component reciprocates linearly relative to the rotating component, thereby realizing the function of reciprocating linear movement of the first sliding component. This, in turn, pushes an object through the first sliding component. During this process, the second sliding component follows the first sliding component in a synchronous reciprocating linear movement and slides linearly along a slide rail, thus improving the accuracy and stability of the reciprocating linear movement of the first sliding component. By integrally molding or snap-fitting the second sliding component to the first sliding component, the second sliding component can synchronously and stably reciprocate linearly and smoothly slide linearly along the slide rail, compared to the screw-fastening method used in the prior art. The integral molding or snap-fitting connection of the second and first sliding components effectively improves the connection stability and reliability between them, avoiding loosening during long-term use that could affect the connection stability and reliability and thus the technical problem of affecting the accuracy of the reciprocating linear movement of the first sliding component. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional schematic diagram of the drive mechanism in some embodiments of this application is shown. Figure 1 ; Figure 2 A three-dimensional schematic diagram of the drive mechanism in some embodiments of this application is shown. Figure 2 ; Figure 3 It shows Figure 2 Exploded view of the central drive mechanism; Figure 4 It shows Figure 2 A downward view of the central drive mechanism. Figure 1 ; Figure 5 It shows Figure 2 A downward view of the central drive mechanism. Figure 2 .

[0018] Explanation of key component symbols: 100 - Drive mechanism; 110-Slide rail; 120-Rotating component; 130 - First sliding component; 131 - Slot; 1311 - Bottom wall; 1312 - Side wall; 13121 - Limiting protrusion; 132 - Assembly port; 140 - Second sliding member; 141 - Locking protrusion. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, 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", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly 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 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through 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. "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.

[0024] like Figure 1 and Figure 2 As shown, an embodiment of this application provides a drive mechanism 100, mainly applied to a miniature electric cylinder, which is primarily used in devices equipped with a miniature electric cylinder. The drive mechanism 100 includes a slide rail 110, a drive member, a rotating member 120, a first sliding member 130, and a second sliding member 140.

[0025] The output end of the driving component is connected to the rotating component 120 and is used to drive the rotating component 120 to rotate. The first sliding component 130 is sleeved on the outer periphery of the rotating component 120 and is threadedly connected to the rotating component 120. The second sliding component 140 is integrally formed with the first sliding component 130 or snap-fitted to it, and the second sliding component 140 is slidably connected to the slide rail 110.

[0026] The driving mechanism 100 provided in the embodiments of this application, during operation, drives the rotating member 120 to rotate at the output end of the driving member. Under the action of the threaded connection between the rotating member 120 and the first sliding member 130, the first sliding member 130 moves back and forth linearly relative to the rotating member 120, thereby realizing the function of the first sliding member 130 moving back and forth linearly. Then, the object is pushed by the first sliding member 130. During this process, the second sliding member 140 moves back and forth linearly synchronously with the first sliding member 130 and slides back and forth linearly along the slide rail 110 to improve the accuracy and stability of the first sliding member 130 moving back and forth linearly.

[0027] By integrally forming or snap-fitting the second slider 140 with the first slider 130, the second slider 140 can synchronously and stably reciprocate linearly following the first slider 130 and smoothly slide reciprocally linearly along the slide rail 110. Compared with the screw fastening method in the prior art, the integral forming or snap-fitting of the second slider 140 with the first slider 130 effectively improves the connection stability and reliability between the two, and avoids the technical problem of loosening during long-term use, which affects the connection stability and reliability between the two and affects the reciprocating linear movement accuracy of the first slider.

[0028] For example, the driving component can be a servo motor, and the connection between the rotating component 120 and the output end of the driving component can be a meshing connection, a coupling connection, or integral molding. The outer peripheral wall of the rotating component 120 is provided with an external thread, and the inner peripheral wall of the first sliding component 130 is provided with an internal thread that mates with the external thread.

[0029] like Figure 1 As shown, in one embodiment of this application, the second slider 140 is integrally formed with the first slider 130.

[0030] In this embodiment, by integrally molding the second slider 140 and the first slider 130, the second slider 140 can synchronously and stably reciprocate linearly following the first slider 130 and smoothly slide reciprocally linearly along the slide rail 110. This improves the connection stability and reliability between the two, effectively preventing loosening during long-term use that could affect the connection stability and reliability and thus the technical problem of affecting the reciprocating linear movement accuracy of the first slider. Furthermore, the integral molding process eliminates the assembly step of mounting the second slider 140 onto the first slider 130, effectively improving assembly efficiency.

[0031] For example, the second slider 140 and the first slider 130 can be integrally formed by machining, 3D printing or injection molding.

[0032] like Figure 2 and Figure 3 As shown, in one embodiment of this application, the second slider 140 is snapped together with the first slider 130.

[0033] In this embodiment, by snapping the second slider 140 to the first slider 130, the second slider 140 can synchronously and stably reciprocate linearly following the first slider 130 and smoothly slide reciprocally linearly along the slide rail 110. This improves the connection stability and reliability between the two and effectively avoids the technical problem of loosening during long-term use, which would affect the connection stability and reliability between the two and thus affect the reciprocating linear movement accuracy of the first slider.

[0034] like Figure 2 and Figure 3 As shown in the above embodiments of this application, the second sliding member 140 is provided with a latching protrusion 141, and the outer peripheral wall of the first sliding member 130 is provided with a latching groove 131 that engages with the latching protrusion 141.

[0035] In this embodiment, by providing a locking protrusion 141 on the second sliding member 140 and opening a locking groove 131 on the outer peripheral wall of the first sliding member 130 to engage with the locking protrusion 141, the second sliding member 140 can move synchronously and stably with the first sliding member 130 under the interference fit of the locking protrusion 141 and the locking groove 131, and can avoid loosening during long-term use, which would affect the connection stability and reliability between the two.

[0036] In another embodiment, the second slider 140 has a slot 131, and the outer peripheral wall of the first slider 130 has a protrusion 141 that engages with the slot 131.

[0037] In this embodiment, by opening a slot 131 on the second slider 140 and providing a protrusion 141 on the outer peripheral wall of the first slider 130 that engages with the slot 131, the second slider 140 can move synchronously and stably with the first slider 130 under the interference fit of the slot 131 and the protrusion 141. This also avoids loosening during long-term use, which could affect the stability and reliability of the connection between the two.

[0038] like Figure 2 , Figure 3 and Figure 4 As shown in the above embodiments of this application, the slot 131 includes a bottom wall 1311 and two side walls 1312. The two side walls 1312 are respectively connected to opposite sides of the bottom wall 1311. The two side walls 1312 are inclined from the direction close to the bottom wall 1311 to the direction away from the bottom wall 1311, and the inclination directions of the two side walls 1312 are close to each other. The shape of the protrusion 141 is adapted to the slot 131. The end wall of the first sliding member 130 is provided with an assembly port 132 communicating with the slot 131. The protrusion 141 passes through the assembly port 132 and is disposed in the slot 131.

[0039] In this embodiment, the slot 131 includes a bottom wall 1311 and two side walls 1312 respectively connected to opposite sides of the bottom wall 1311. By tilting both side walls 1312 from the direction closest to the bottom wall 1311 towards the direction away from the bottom wall 1311, and with the tilting directions of the two side walls 1312 approaching each other, and by configuring the shape of the protrusion 141 to fit the slot 131, both side walls 1312 can limit the protrusion 141, preventing it from detaching from the slot 131 in the direction away from the bottom wall 1311. This further improves the stability and reliability of the connection between the second sliding member 140 and the first sliding member 130, thereby further ensuring the accuracy of the reciprocating linear movement of the first sliding member 130. Simultaneously, by opening an assembly port 132 communicating with the slot 131 on the end wall of the first sliding member 130, the protrusion 141 can pass through the assembly port 132 and be assembled into the slot 131.

[0040] like Figure 2 , Figure 3 and Figure 5 As shown in the above embodiment of this application, the slot 131 includes a bottom wall 1311 and two side walls 1312. The two side walls 1312 are respectively connected to opposite sides of the bottom wall 1311. Each of the two side walls 1312 is provided with a limiting protrusion 13121 at one end away from the bottom wall 1311. The two limiting protrusions 13121 extend close to each other to restrict the card protrusion 141 from disengaging from the slot 131 in a direction away from the bottom wall 1311. The shape of the card protrusion 141 is adapted to the slot 131. The end wall of the first sliding member 130 is provided with an assembly port 132 communicating with the slot 131. The card protrusion 141 passes through the assembly port 132 and is disposed in the slot 131.

[0041] In this embodiment, the slot 131 includes a bottom wall 1311 and two side walls 1312 respectively connected to opposite sides of the bottom wall 1311. Limiting protrusions 13121 are provided at the ends of the two side walls 1312 away from the bottom wall 1311. The two limiting protrusions 13121 extend close to each other, and the shape of the latching protrusion 141 is adapted to the slot 131. This allows the limiting protrusions 13121 of the two side walls 1312 to limit the latching protrusion 141, preventing it from detaching from the slot 131 in a direction away from the bottom wall 1311. This further improves the stability and reliability of the connection between the second sliding member 140 and the first sliding member 130, and further ensures the accuracy of the reciprocating linear movement of the first sliding member 130. Simultaneously, an assembly opening 132 communicating with the slot 131 is provided on the end wall of the first sliding member 130, allowing the latching protrusion 141 to pass through the assembly opening 132 and be assembled into the slot 131.

[0042] In any of the above embodiments of this application, the driving mechanism 100 further includes a driving wheel and a first transmission wheel. The driving wheel is fixedly connected to the output end of the driving member, and the first transmission wheel is fixedly connected to the rotating member 120. The driving wheel and the first transmission wheel are meshed together.

[0043] In this embodiment, by fixing the drive wheel and the first transmission wheel to the output end of the drive member and the rotating member 120 respectively, and meshing the drive wheel with the first transmission wheel, the rotating member 120 can be driven to rotate under the meshing connection between the drive wheel and the first transmission wheel. Thus, under the threaded connection between the rotating member 120 and the first sliding member 130, the first sliding member 130 can be driven to reciprocate linearly.

[0044] On the other hand, this also allows the drive component and the rotating component 120 to be arranged side by side, thereby reducing the space occupied by the drive mechanism 100 in the housing, making the structure simple and compact, and thus facilitating its application in micro electric cylinders.

[0045] For example, both the drive wheel and the first transmission wheel can be gears, and the diameter of the drive wheel is smaller than the diameter of the first transmission wheel to achieve a speed reduction effect. The connection between the drive wheel and the output end of the drive component can be a key connection, a screw connection, or integral molding. The connection between the first transmission wheel and the rotating component 120 can be a key connection, a screw connection, or integral molding.

[0046] In the above embodiments of this application, the drive mechanism 100 further includes a drive shaft, a second drive wheel, and a third drive wheel. The second drive wheel and the third drive wheel are both fixedly connected to the drive shaft. The second drive wheel is meshed with the drive wheel, and the third drive wheel is meshed with the first drive wheel.

[0047] In this embodiment, both the second and third transmission wheels can be gears. The diameter of the second transmission wheel is larger than that of the drive wheel, and the diameter of the third transmission wheel is smaller than that of the first transmission wheel, so as to achieve a further deceleration effect. The connection between the second and third transmission wheels and the transmission shaft can be a key connection, a screw connection, or integral molding.

[0048] This application also provides a miniature electric cylinder, including the drive mechanism 100 described in the above embodiments.

[0049] The miniature electric cylinder has the drive mechanism 100 in any of the above embodiments, and therefore has all the beneficial effects of the drive mechanism 100, which will not be described in detail here.

[0050] This application also provides a device with a miniature electric cylinder, including the miniature electric cylinder described in the above embodiments.

[0051] The device has the miniature electric cylinder of the above embodiments, and therefore has all the beneficial effects of the miniature electric cylinder, which will not be described in detail here.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A drive mechanism characterized by, include: slide rail; Drive components; A rotating component, wherein the output end of the driving component is connected to the rotating component for driving the rotating component to rotate; A first sliding member is sleeved on the outer periphery of the rotating member and is threadedly connected to the rotating member; The second sliding member is integrally formed or snap-fitted with the first sliding member, and the second sliding member is slidably connected to the slide rail.

2. The drive mechanism of claim 1, wherein, The second sliding member is integrally formed with the first sliding member.

3. The drive mechanism of claim 1, wherein, The second slider is snapped into place with the first slider.

4. The driving mechanism according to claim 3, characterized in that, The second sliding member is provided with a locking protrusion, and the outer peripheral wall of the first sliding member is provided with a locking groove that engages with the locking protrusion; Alternatively, the second sliding member may have a slot, and the outer peripheral wall of the first sliding member may have a protrusion that engages with the slot.

5. The driving mechanism according to claim 4, characterized in that, The slot includes a bottom wall and two side walls. The two side walls are respectively connected to opposite sides of the bottom wall. Both side walls are inclined from the direction close to the bottom wall to the direction away from the bottom wall, and the inclination directions of the two side walls are close to each other. The shape of the protrusion is adapted to the slot. The end wall of the first sliding member has an assembly opening that communicates with the slot. The protrusion passes through the assembly opening and is disposed in the slot.

6. The driving mechanism according to claim 4, characterized in that, The slot includes a bottom wall and two side walls. The two side walls are respectively connected to opposite sides of the bottom wall. Each of the two side walls has a limiting protrusion at the end away from the bottom wall. The two limiting protrusions extend close to each other to restrict the card protrusion from leaving the slot in a direction away from the bottom wall. The shape of the card protrusion is adapted to the slot. The end wall of the first sliding member has an assembly opening that communicates with the slot. The card protrusion passes through the assembly opening and is disposed in the slot.

7. The drive mechanism according to any one of claims 1 to 6, characterized in that, The driving mechanism further includes a driving wheel and a first transmission wheel. The driving wheel is fixedly connected to the output end of the driving member, and the first transmission wheel is fixedly connected to the rotating member. The driving wheel and the first transmission wheel are meshed together.

8. The driving mechanism according to claim 7, characterized in that, The drive mechanism further includes a drive shaft, a second drive wheel, and a third drive wheel. The second drive wheel and the third drive wheel are both fixedly connected to the drive shaft. The second drive wheel is meshed with the drive wheel, and the third drive wheel is meshed with the first drive wheel.

9. A miniature electric cylinder, characterized in that, Includes the drive mechanism according to any one of claims 1 to 8.

10. A device with a miniature electric cylinder, characterized in that, Including the miniature electric cylinder as described in claim 9.

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