A telescopic rotary mechanism

Abstract

This utility model provides a telescopic and rotating mechanism, comprising: a movable component; a telescopic assembly for driving the movable component to achieve axial telescopic movement; and a rotating assembly for driving the movable component to rotate around its own axis. The outer wall of the movable component is provided with an annular groove circumferentially surrounding the outer wall and a strip-shaped groove axially positioned therein. The telescopic assembly includes a first driving member disposed in the annular groove, used to drive the movable component to reciprocate, thereby achieving telescopic movement. The rotating assembly includes a second driving member, the second driving member having a second protrusion disposed in the strip-shaped groove, used to drive the movable component to rotate around its own axis. This utility model achieves efficient integration of telescopic and rotating movements through structural optimization, improving accuracy, stability, and transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission equipment technology, specifically to a telescopic rotation mechanism. Background Technology

[0002] In the field of mechanical transmission, telescopic and rotary mechanisms are widely used in various equipment and robotic arms to realize the axial telescopic movement and rotational movement of moving parts around their own axis, so as to meet the position and posture adjustment needs in different working scenarios.

[0003] The shortcomings of existing technology:

[0004] 1. Limited functionality: The existing structure only has one of the functions, either telescopic or rotational.

[0005] 2. Difficulty in synchronous control: The coordination and control between telescopic and rotational movements is not ideal, making it difficult to achieve precise synchronous action. For complex operations that require simultaneous telescopic and rotational movements, the existing technology is quite difficult to control.

[0006] 3. Complex structure: Existing telescopic and rotating mechanisms often use multiple sets of motors, gears, lead screws and nuts to cooperate in order to achieve telescopic and rotating movements, resulting in a relatively complex overall structure, which increases manufacturing costs and maintenance difficulty.

[0007] Therefore, existing technologies have shortcomings and need further improvement. Utility Model Content

[0008] In view of the problems existing in the prior art, this utility model provides a telescopic rotation mechanism.

[0009] To achieve the above objectives, the specific solution of this utility model is as follows:

[0010] This utility model provides a telescopic rotation mechanism, including:

[0011] Active items;

[0012] Telescopic assembly, used to drive moving parts to achieve axial telescopic movement;

[0013] A rotating component is used to drive a moving part to rotate about its own axis.

[0014] The outer wall of the movable part is provided with an annular groove arranged around the outer wall circumferentially and a strip groove arranged along the axial direction;

[0015] The telescopic assembly includes a first driving member, which is disposed in an annular groove and is used to drive the movable member to reciprocate, thereby realizing telescopic movement.

[0016] The rotating assembly includes a second driving member, which has a second protrusion disposed in a strip-shaped groove for driving the movable member to rotate around its own axis.

[0017] The telescopic assembly includes a first drive mechanism, a first belt, and a pulley;

[0018] The first belt is mounted on the first drive mechanism and the pulley on its two sides, and the first driving member is mounted on the belt.

[0019] The first drive mechanism drives the belt to rotate in both directions, which in turn drives the first drive component to move back and forth, thereby driving the movable component to move back and forth to achieve extension and retraction.

[0020] The rotating assembly includes a second drive mechanism and a second belt;

[0021] The two sides of the second belt are respectively mounted on the second drive mechanism and the second drive member. The second drive mechanism drives the second belt to rotate, which in turn drives the second drive member to rotate, thereby driving the movable part to rotate.

[0022] Furthermore, the telescopic assembly includes a first motor, a first lead screw, a first nut, and a mounting bracket;

[0023] The mounting bracket is provided with a first sliding groove;

[0024] The first lead screw is mounted on the output shaft of the first motor, and the first nut is mounted on the first lead screw by a thread. The first nut is also located in the first slide groove.

[0025] The first motor drives the first lead screw to rotate, and the first slide groove is used to limit the rotation of the first nut, thereby converting the forward and reverse rotational motion into linear reciprocating motion to achieve telescopic motion;

[0026] The first driving component is mounted on the first nut, thereby driving the movable component to achieve telescopic movement.

[0027] Furthermore, the first driving component is a first annular component.

[0028] Furthermore, two first nuts are provided on the first lead screw through the same threaded connection, and each first nut is provided with a first annular component;

[0029] One of the first annular components is disposed in the annular groove, and the other first annular component is sleeved on the movable component.

[0030] Furthermore, a first protrusion is provided on the inner wall of the first annular member, which is embedded in the annular groove of the movable member to drive the movable member to reciprocate.

[0031] Furthermore, the rotating assembly includes a second motor and a second gear;

[0032] The second driving member is a second annular member, which is sleeved on the movable member, and a toothed ring is provided on the outer wall of the second annular member;

[0033] The second gear is mounted on the output shaft of the second motor, and the second gear meshes with the gear ring on the outer wall of the second annular component for transmission.

[0034] The second motor drives the second gear to rotate, which in turn drives the second annular component to rotate. The second protrusion on the inner wall of the second annular component extends radially and is embedded in the strip groove of the movable component, slidingly engaging with the strip groove and driving the movable component to rotate.

[0035] Furthermore, the number of the strip grooves is four, and each strip groove is provided with a second protrusion.

[0036] Furthermore, the four strip-shaped grooves are spaced 90 degrees apart from each other.

[0037] Furthermore, the movable component has a cylindrical structure.

[0038] Furthermore, the annular groove and the strip groove are respectively provided at both ends of the movable part.

[0039] The technical solution of this utility model has the following beneficial effects:

[0040] 1. Ingenious structural design: By setting annular grooves and strip grooves on the outer wall of the moving part, and cooperating with the first driving component in the telescopic assembly and the second driving component in the rotating assembly respectively, the axial telescopic movement and the rotational movement around its own axis of the moving part are efficiently integrated. The structure is compact and the layout is reasonable, which greatly reduces the size and space occupied by the mechanism, improves the space utilization rate, and can be applied to more work scenarios with strict space requirements.

[0041] 2. High motion precision: The telescopic component uses a first motor to drive the first lead screw to rotate, and the first slide groove to restrict the rotation of the first nut, accurately converting the rotational motion into linear reciprocating motion, thereby achieving high-precision telescopic motion control; the rotating component uses a second motor to drive the second gear to mesh with the outer ring gear of the second ring component, driving the moving part to rotate stably. The tight fit of each component reduces the cumulative error during the motion process, effectively improving the motion precision of the telescopic and rotational movement of the moving part, and can meet the needs of high-precision machining or operation tasks.

[0042] 3. High stability: The design employs double first nuts and double first annular components corresponding to two annular grooves, and a first protrusion embedded in the annular groove on the inner wall of the first annular component, which enhances the stability of the telescopic movement and prevents the moving parts from swaying or tilting during the telescopic process. At the same time, the cooperation of four strip grooves with four second protrusions, and the 90-degree interval between the strip grooves, ensures that the rotating component is evenly stressed when driving the moving parts to rotate, further improving the stability of the rotational movement. This ensures that the mechanism can maintain good working performance even at high speeds or frequent movements, improving work efficiency and quality.

[0043] 4. Excellent synchronous control performance: The telescopic and rotating components are driven by independent motors, which can precisely control the telescopic and rotating motions respectively. Through reasonable mechanical transmission design, good synchronous coordination between the two can be achieved, which facilitates the formulation of flexible control strategies according to actual work needs, better adapts to complex operation tasks that require simultaneous telescopic and rotating motions, and broadens the application range of the mechanism.

[0044] 5. High transmission efficiency: The application of the lead screw and nut transmission pair in the telescopic assembly has the characteristics of low friction loss and high transmission efficiency. It can efficiently convert the rotational motion of the motor into linear motion, reducing energy loss. The gear meshing transmission method in the rotating assembly has a precise transmission ratio, which can ensure that the rotational power of the motor is accurately transmitted to the moving parts, driving them to rotate stably. Overall, it improves the power transmission efficiency of the mechanism, reduces energy consumption, and improves energy utilization efficiency.

[0045] 6. Convenient installation and maintenance: All components, such as motors, lead screws, nuts, mounting brackets, gears, and ring parts, are standardized or modular parts, which are easy to purchase, install, and replace; the moving parts are cylindrical structures with regular shapes, which are easy to process and manufacture, and the matching method with each driving part is simple, which makes it easy to achieve precise assembly, reducing production and manufacturing costs and maintenance difficulty, improving the reliability and maintainability of the mechanism, and helping to extend the service life of the mechanism. Attached Figure Description

[0046] Figure 1 This is a perspective view of the present invention;

[0047] Figure 2 This is a perspective view of the present invention after the mounting bracket has been removed;

[0048] Figure 3 This is a perspective view of the telescopic component of this utility model;

[0049] Figure 4 This is a perspective view of the telescopic component of this utility model after the mounting bracket has been removed;

[0050] Figure 5This is a perspective view of the telescopic component of this utility model after the movable part has been removed;

[0051] Figure 6 This is a perspective view of the movable component of this utility model;

[0052] Figure 7 This is a perspective view of the rotating component of this utility model;

[0053] Figure 8 This is a perspective view of the second annular component of this utility model.

[0054] Attached image captions:

[0055] 1. Moving part; 2. First motor; 3. First lead screw; 4. First nut; 5. Mounting bracket; 6. First slide groove; 7. First annular part; 8. Annular groove; 9. Strip groove; 10. Second motor; 11. Second gear; 12. Second annular part; 13. Gear ring. Detailed Implementation

[0056] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0057] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 utility model based on the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this embodiment, the terms "upper," "lower," "front," "rear," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0060] Combination Figures 1-3 As shown, this utility model provides a telescopic rotation mechanism, comprising:

[0061] Activity item 1;

[0062] A telescopic assembly is used to drive the movable part 1 to achieve axial telescopic movement;

[0063] A rotating component is used to drive the movable part 1 to rotate about its own axis;

[0064] The outer wall of the movable part 1 is provided with an annular groove 8 arranged around the outer wall and a strip groove 9 arranged along the axial direction;

[0065] The telescopic assembly includes a first driving member, which is disposed in an annular groove 8 and is used to drive the movable member 1 to reciprocate, thereby realizing telescopic movement.

[0066] The rotating assembly includes a second driving member, which has a second protrusion disposed in a strip groove 9 for driving the movable member 1 to rotate around its own axis.

[0067] The telescopic assembly includes a first drive mechanism, a first belt, and a pulley;

[0068] The first belt is mounted on the first drive mechanism and the pulley on its two sides, and the first driving member is mounted on the belt.

[0069] The first drive mechanism drives the belt to rotate in both directions, which in turn drives the first drive member to move back and forth, thereby driving the movable member 1 to move back and forth to achieve extension and retraction.

[0070] The rotating assembly includes a second drive mechanism and a second belt;

[0071] The two sides of the second belt are respectively mounted on the second drive mechanism and the second drive member. The second drive mechanism drives the second belt to rotate, which in turn drives the second drive member to rotate, thereby driving the movable part 1 to rotate.

[0072] The telescopic assembly includes a first motor 2, a first lead screw 3, a first nut 4, and a mounting bracket 5;

[0073] The mounting bracket 5 is provided with a first sliding groove 6;

[0074] The first lead screw 3 is mounted on the output shaft of the first motor 2, and the first nut 4 is mounted on the first lead screw 3 by means of threads. At the same time, the first nut 4 is also set in the first slide groove 6.

[0075] The first motor 2 drives the first lead screw 3 to rotate, and the first slide groove 6 is used to limit the rotation of the first nut 4, thereby converting the forward and reverse rotational motion into linear reciprocating motion and realizing telescopic motion;

[0076] The first driving component is installed on the first nut 4, thereby driving the movable component 1 to achieve telescopic movement.

[0077] The first driving component is the first annular component 7.

[0078] Two first nuts 4 are provided on the first lead screw 3 through the same thread engagement, and each first nut 4 is provided with a first annular part 7;

[0079] One of the first annular parts 7 is disposed in the annular groove 8, and the other first annular part 7 is sleeved on the movable part 1.

[0080] The inner wall of the first annular member 7 is also provided with a first protrusion, which is embedded in the annular groove 8 of the movable member 1 to drive the movable member 1 to reciprocate.

[0081] The rotating assembly includes a second motor 10 and a second gear 11;

[0082] The second driving member is a second annular member 12, which is sleeved on the movable member 1. A toothed ring 13 is provided on the outer wall of the second annular member 12.

[0083] The second gear 11 is mounted on the output shaft of the second motor 10, and the second gear 11 meshes with the toothed ring 13 on the outer wall of the second annular member 12 for transmission.

[0084] The second motor 10 drives the second gear 11 to rotate, which in turn drives the second annular member 12 to rotate. The second protrusion on the inner wall of the second annular member 12 extends radially and is embedded in the strip groove 9 of the movable member 1, slidingly engaging with the strip groove 9 and driving the movable member 1 to rotate.

[0085] The number of the strip grooves 9 is four, and each strip groove 9 is provided with a second protrusion.

[0086] The four strip-shaped grooves 9 are spaced 90 degrees apart.

[0087] The movable component 1 has a cylindrical structure.

[0088] The annular groove 8 and the strip groove 9 are respectively provided at both ends of the movable part 1.

[0089] The principle of this utility model is as follows:

[0090] Independent control of telescopic and rotational motion is achieved through physical structural decoupling:

[0091] Telescopic motion: driven by telescopic components, constrained by annular groove 8 in circumferential degree of freedom, transmitting only axial force;

[0092] Rotational motion: driven by a rotating component, with axial freedom constrained by the strip groove 9, transmitting only torque;

[0093] Motion mutual exclusion: The two sets of grooves and protrusions (the first protrusion is matched with the annular groove, and the second protrusion is matched with the strip groove) are mutually isolated to avoid motion interference.

[0094] I. Implementation Process of Extension and Retraction Motion

[0095] Power input

[0096] The first motor 2 (such as a stepper motor / servo motor) starts and drives the first lead screw 3 to rotate.

[0097] Motion conversion

[0098] The first nut 4 is threadedly engaged with the first lead screw 3, but cannot rotate due to the radial limitation of the first slide groove 6 on the mounting bracket 5;

[0099] The lead screw rotates, and the nut moves linearly along the lead screw axis (rotation becomes linear).

[0100] Power transmission

[0101] The first nut 4 drives the first driving component (first annular component 7) on it to move synchronously;

[0102] The first protrusion of the first annular member 7 is embedded in the annular groove 8 of the movable member 1, pushing the movable member 1 to extend and retract axially.

[0103] Anti-eccentric load design

[0104] A double-nut layout is adopted: two first annular parts 7 push the movable part 1 simultaneously to eliminate lateral torque and ensure that the extension and retraction trajectory is straight.

[0105] Key design features: The annular groove 8 allows the first protrusion to slide freely in the circumference relative to the movable part 1, and the telescopic component is not affected during rotational movement.

[0106] II. Implementation Process of Rotational Motion

[0107] Power input

[0108] The second motor 10 starts and drives the second gear 11 to rotate.

[0109] Motion transmission

[0110] The second gear 11 meshes with the toothed ring 13 on the outer wall of the second ring member 12, thereby driving the second ring member 12 to rotate around the axis of the movable member 1.

[0111] Torque transmission

[0112] The second protrusion on the inner wall of the second annular component 12 is embedded in the strip groove 9 of the movable component 1;

[0113] The protrusion makes rigid contact with the strip groove 9 in a circumferential direction, thereby pushing the movable part 1 to rotate synchronously.

[0114] Axial degree of freedom release

[0115] The strip groove 9 allows the second protrusion to slide freely along the groove axis, and the rotating assembly rotates without resistance when the movable part 1 extends or retracts.

[0116] Load sharing reinforcement

[0117] The four second protrusions are evenly distributed at 90° to form full-circumferential torque support, preventing local stress concentration.

[0118] Key design features: The strip groove 9 only constrains circumferential movement, while the axial movement is a sliding fit, ensuring that the telescopic movement operates independently during rotation.

[0119] III. Composite Motion Scenarios (Synchronous Extension and Rotation)

[0120] Telescopic component operation:

[0121] The first nut 4 pushes the movable part 1 to move axially → The second protrusion slides passively axially in the strip groove 9, without hindering the extension and retraction;

[0122] Rotating component operation:

[0123] The second annular component 12 drives the movable component 1 to rotate → The first protrusion slides passively in the annular groove 8 without transmitting torque;

[0124] Motion superposition:

[0125] The moving part 1 simultaneously completes axial displacement and rotation around the axis, and the two sets of movements do not interfere with each other.

[0126] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A telescopic rotating mechanism, characterized in that, include: Active items; Telescopic assembly, used to drive moving parts to achieve axial telescopic movement; A rotating component is used to drive a moving part to rotate about its own axis; The outer wall of the movable part is provided with an annular groove arranged around the outer wall circumferentially and a strip groove arranged along the axial direction; The telescopic assembly includes a first driving member, which is disposed in an annular groove and is used to drive the movable member to reciprocate, thereby realizing telescopic movement. The rotating assembly includes a second driving member, which has a second protrusion disposed in a strip-shaped groove for driving the movable member to rotate around its own axis.

2. The telescopic rotation mechanism according to claim 1, characterized in that: The telescopic assembly includes a first drive mechanism, a first belt, and a pulley; The first belt is mounted on the first drive mechanism and the pulley on its two sides, and the first driving member is mounted on the belt. The first drive mechanism drives the belt to rotate in both directions, which in turn drives the first drive component to move back and forth, thereby driving the movable component to move back and forth to achieve extension and retraction.

3. The telescopic rotating mechanism according to claim 1, characterized in that: The rotating assembly includes a second drive mechanism and a second belt; The two sides of the second belt are respectively mounted on the second drive mechanism and the second drive member. The second drive mechanism drives the second belt to rotate, which in turn drives the second drive member to rotate, thereby driving the movable part to rotate.

4. The telescopic rotating mechanism according to claim 1, characterized in that: The telescopic assembly includes a first motor, a first lead screw, a first nut, and a mounting bracket; The mounting bracket is provided with a first sliding groove; The first lead screw is mounted on the output shaft of the first motor, and the first nut is mounted on the first lead screw by a thread. The first nut is also located in the first slide groove. The first motor drives the first lead screw to rotate, and the first slide groove is used to limit the rotation of the first nut, thereby converting the forward and reverse rotational motion into linear reciprocating motion to achieve telescopic motion; The first driving component is mounted on the first nut, thereby driving the movable component to achieve telescopic movement.

5. The telescopic rotating mechanism according to claim 4, characterized in that: The first driving component is a first ring-shaped component.

6. The telescopic rotating mechanism according to claim 5, characterized in that: The first lead screw is provided with two first nuts through the same thread engagement, and each first nut is provided with a first annular part; One of the first annular components is disposed in the annular groove, and the other first annular component is sleeved on the movable component.

7. The telescopic rotating mechanism according to claim 5, characterized in that: The inner wall of the first annular member is also provided with a first protrusion, which is embedded in the annular groove of the movable member to drive the movable member to reciprocate.

8. The telescopic rotation mechanism according to claim 1, characterized in that: The rotating assembly includes a second motor and a second gear; The second driving member is a second annular member, which is sleeved on the movable member, and a toothed ring is provided on the outer wall of the second annular member; The second gear is mounted on the output shaft of the second motor, and the second gear meshes with the gear ring on the outer wall of the second annular component for transmission. The second motor drives the second gear to rotate, which in turn drives the second annular component to rotate. The second protrusion on the inner wall of the second annular component extends radially and is embedded in the strip groove of the movable component, slidingly engaging with the strip groove and driving the movable component to rotate.

9. The telescopic rotating mechanism according to claim 8, characterized in that: The number of the strip grooves is four, and each strip groove is provided with a second protrusion.

10. The telescopic rotation mechanism according to claim 1, characterized in that: The movable component has a cylindrical structure, and the annular groove and the strip groove are respectively provided at both ends of the movable component.

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