Novel rotary telescopic mechanism and massager

Abstract

The invention provides a novel rotating and telescoping mechanism and a massager. The rotating and telescoping mechanism comprises a movable part; the telescopic assembly is used for driving the movable part to realize axial telescopic movement; the rotating assembly is used for driving the movable part to rotate around the axis of the movable part; the outer wall of the movable part is provided with an annular groove which is arranged around the outer wall in the circumferential direction and a strip-shaped groove which is arranged in the axial direction. The telescopic assembly comprises a first driving piece, and the first driving piece is arranged in the annular groove and used for driving the movable piece to do reciprocating motion, so that telescopic motion is achieved; the rotating assembly comprises a second driving piece, the second driving piece is provided with a second protruding piece, and the second protruding piece is arranged in the strip-shaped groove and used for driving the movable piece to rotate around the axis of the movable piece. The annular groove and the strip-shaped groove are matched with the two sets of independent roller transmission mechanisms, complete decoupling, low-friction and high-precision synchronous control of telescopic motion and rotary motion is achieved in a compact structure, and the stability and efficiency of the composite motion device are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission equipment, and in particular to a novel rotating telescopic mechanism and a massager. Background Art

[0002] In many fields of actual production and life, such as mechanical operation, medical equipment, daily necessities, etc., various different mechanisms are often needed to realize complex motion forms such as rotation, extension and telescopic movement of objects, as well as the combination of the two, in order to meet various functional requirements and application scenarios. For example, in some massage equipment, a suitable mechanism is needed to drive the massage head and other components to rotate and extend to achieve better massage effects.

[0003] Deficiencies of existing technology: 1. Complex and non-compact structure: Most existing mechanisms capable of achieving rotation and telescopic functions adopt relatively complex and decentralized structural designs or only have one of the functions of rotation or telescopic. This results in a large overall volume and a non-compact structure. This makes it difficult to install and use in some application scenarios with strict space requirements, limiting its scope of application.

[0004] 2. Low transmission efficiency: Traditional mechanisms often suffer from low transmission efficiency when transmitting power to achieve rotational and telescopic motion. For example, significant power loss may occur during the transmission process, resulting in the moving parts not achieving the desired effect, thus affecting the performance and efficiency of the entire device.

[0005] 3. Insufficient Motion Precision: Existing mechanisms of this type struggle to achieve high-precision rotational and telescopic motion control. Moving parts may experience wobbling and deviation during movement, making it impossible to precisely follow the preset trajectory and speed. This makes them infeasible for applications requiring high precision, such as operating high-precision medical devices.

[0006] 4. Poor integration: It is difficult to integrate the rotation and telescopic functions into a relatively simple and unified structure. Usually, two separate independent systems are used to realize rotation and telescopic functions respectively. As a result, in equipment that needs to have both functions at the same time, the overall system complexity is high and the coordination between the various components is also relatively difficult, which is not conducive to the miniaturization and intelligent development of the equipment.

[0007] Therefore, the existing technology has deficiencies and needs further improvement. Summary of the Invention

[0008] In view of the problems existing in the prior art, the present invention provides a novel rotating and telescopic mechanism and a massager.

[0009] To achieve the above object, the specific solutions of the present invention are as follows: The present invention provides a novel rotating and telescopic mechanism, comprising: movable parts; Telescopic assembly, used to drive the movable parts to achieve axial telescopic movement; Rotating assembly, used to drive the moving parts to rotate around their own axis; The outer wall of the movable part is provided with an annular groove arranged circumferentially around the outer wall and a strip groove arranged along the axial direction; The telescopic assembly includes a first driving member, which is arranged in the annular groove and is used to drive the movable member to move back and forth, thereby realizing the telescopic movement; The rotating assembly includes a second driving member, and the second driving member is provided with a second protrusion. The second protrusion is arranged in the strip-shaped groove and is used to drive the movable member to rotate around its own axis.

[0010] Furthermore, the telescopic assembly includes a first driving mechanism, a first belt, and a pulley; The two sides of the first belt are respectively mounted on the first driving mechanism and the pulley, and the first driving member is mounted on the belt; The first driving mechanism drives the belt to rotate forward and reverse, thereby driving the first driving member to move back and forth, thereby driving the movable member to move back and forth to achieve extension and retraction.

[0011] Furthermore, the rotating assembly includes a second driving mechanism and a second belt; Two sides of the second belt are respectively mounted on the second driving mechanism and the second driving member. The second driving mechanism drives the second belt to rotate, thereby driving the second driving member to rotate, and thus driving the movable member to rotate.

[0012] Furthermore, the telescopic assembly includes a first motor, a lead screw, a nut, and a first mounting bracket; The first driving member is a first annular member; The first mounting frame is provided with a first sliding groove; The lead screw is mounted on the output shaft of the first motor, the nut is mounted on the lead screw through a thread, and the nut is also arranged in the first sliding groove; The first motor drives the lead screw to rotate, and the first slide groove is used to limit the rotation of the nut, thereby converting the forward and reverse rotation motion into linear reciprocating motion. The first annular member is installed on the nut, thereby driving the movable member to achieve telescopic motion.

[0013] Furthermore, two nuts are provided on the lead screw through the same thread, and each nut is provided with a first annular member; One of the first annular parts is arranged in the annular groove, and the other first annular part is sleeved on the movable part.

[0014] Furthermore, two reinforcing rods are fixedly connected between the two first annular members, and two ends of the reinforcing rods are respectively fixed on the two first annular members.

[0015] Furthermore, a first protrusion is provided on the inner wall of the first annular member, and the first protrusion is embedded in the annular groove of the movable member to drive the movable member to move back and forth.

[0016] Furthermore, the first protruding member is composed of a first roller and a first rotating shaft, the first roller is sleeved on the first rotating shaft, the first rotating shaft is installed on the inner wall of the annular member, the first roller is embedded in the annular groove of the movable member, and the axis direction of the first roller is parallel to the axis direction of the movable member, so as to facilitate the rotational movement of the movable member; The end of the lead screw away from the first motor is further provided with a bearing, and the bearing is mounted on the first mounting frame; The first sliding groove is provided with a cover which is detachable by screws.

[0017] Furthermore, the rotating assembly includes a second motor and a second gear; The second driving member is a second annular member, and the second annular member is sleeved on the movable member; A gear 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 is meshed with the gear ring on the outer wall of the second annular member for transmission; The second motor drives the second gear to rotate, and then drives the second annular member to rotate. The second protrusion provided on the inner wall of the second annular member extends radially and embeds into the strip groove of the movable member, slidingly cooperates with the strip groove, and drives the movable member to rotate.

[0018] Furthermore, the second protruding member is composed of a second roller and a second rotating shaft; The second roller is rotatably mounted on a second rotating shaft, and the second rotating shaft is mounted on the inner wall of the second annular member; The axis of the second roller is perpendicular to the axis of the movable member, so that the second roller can roll along the axis of the movable member in the strip groove when the movable member performs telescopic movement; The second roller is embedded in the strip-shaped groove, and the outer peripheral surface of the second roller contacts the side wall of the strip-shaped groove, so as to drive the movable part to rotate.

[0019] Furthermore, the movable member is a cylindrical structure, the annular groove is provided on the circumference of the outer wall of one end of the movable member, and the strip groove is provided on the outer wall of the other end along the axial direction of the movable member; There are four strip-shaped grooves, which are evenly distributed along the circumference of the movable part, and a second protrusion is provided in each strip-shaped groove.

[0020] The present invention also provides a massager, comprising the above-mentioned rotating and telescopic mechanism, the massager further comprising: a housing, a main control circuit board, a battery, and a soft rubber sleeve; The first mounting frame is mounted on a second mounting frame by bolts, the second mounting frame is fixed to the inner wall of the housing, and the first mounting frame and the second mounting frame are arranged inside the housing; The main control circuit board and the battery are mounted on the side of the first mounting frame; A left handle and a right handle are respectively provided on both sides of the shell; Control buttons are provided on both the left handle and the right handle; The main control circuit board is electrically connected to the first motor, the second motor, the battery, and the control button respectively; The control button on the left handle is used to control the extension and retraction and achieve stepless speed regulation; The control button on the right handle is used to control the rotation and achieve stepless speed regulation; The deeper the control button is pressed, the faster the moving part moves; The soft rubber sleeve is installed inside the output end of the movable part for massage contact.

[0021] The technical solution of the present invention has the following beneficial effects: 1. Highly integrated and compact: The rotation and telescopic functions are integrated into one. The telescopic and rotational components are arranged around the movable parts and work closely with each other, making the overall structure compact. This greatly reduces the size and space occupied by the device, making it easy to install and integrate in various application scenarios. It is especially suitable for equipment with limited space requirements, such as small massagers, and provides a more flexible layout.

[0022] 2. Precision Motion Control: The annular and strip grooves on the outer walls of the movable parts precisely mate with the first drive member of the telescopic assembly and the second drive member of the rotating assembly, respectively. The telescopic assembly achieves linear motion through a transmission pair such as a lead screw and nut, while the rotating assembly achieves rotational motion through the meshing of gears and ring gears. With tight connections and direct motion transmission, the telescopic distance, rotation angle, and speed of the movable parts can be precisely controlled, ensuring motion accuracy and meeting the requirements of high-precision operation scenarios.

[0023] 3. Transmission efficiency: The screw-nut transmission pair efficiently converts the motor's rotational motion into linear motion in the telescopic assembly. During this period, there are fewer transmission links and low energy loss, which ensures the power transmission efficiency of the telescopic motion. The gear and ring meshing transmission method of the rotating assembly also has the characteristics of high transmission efficiency. It can effectively transmit the motor's torque to the moving parts, causing them to rotate rapidly, thereby improving the working efficiency of the entire mechanism and realizing efficient power transmission and motion conversion.

[0024] 4. Strong load-bearing capacity: The design of double nuts combined with two first ring parts can evenly distribute the force when the movable part performs telescopic movement, avoiding deformation or damage of components caused by excessive force at a single point, and improving the load-bearing capacity of the mechanism; at the same time, the connection of the reinforcing rod further enhances the rigidity and stability of the structure, ensuring that the movable part can still perform telescopic and rotational movements stably and accurately when bearing heavy loads, broadening the application range of the mechanism and adapting to more scenarios requiring greater force.

[0025] 5. Smooth motion conversion: The first protrusion and the second protrusion respectively adopt a roller structure. The rolling cooperation between the roller and the groove reduces the friction resistance during the extension and rotation of the movable part, and the motion conversion is smooth and without jamming. This reduces the energy loss and component wear caused by friction, extends the service life of the mechanism, and at the same time ensures the smooth movement of the movable part, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a perspective view of the present invention; Figure 2 is a perspective view of the present invention with the cover of the first mounting bracket removed; Figure 3 is a perspective view of the present invention after removing the first mounting bracket; Figure 4 is a perspective view of the telescopic assembly of the present invention; Figure 5 is a perspective view of the telescopic assembly of the present invention with the first mounting bracket removed; Figure 6 is a perspective view of the telescopic assembly of the present invention after removing the first mounting bracket and the movable member; Figure 7 This is a three-dimensional diagram of the first roller of the present invention being sleeved on the first rotating shaft; Figure 8 is a perspective view of a movable member of the present invention; Figure 9 is a perspective view of the rotating assembly of the present invention; Figure 10 is a perspective view of the second annular member of the present invention after the second roller is installed; Figure 11 is a perspective view of the massager of the present invention; Figure 12 is a stereoscopic diagram of the massager of the present invention from another perspective; Figure 13 It is a three-dimensional diagram of the software sleeve.

[0027] Figure annotation: 1. Movable part; 2. Annular groove; 3. Strip groove; 4. First motor; 5. Lead screw; 6. Nut; 7. First mounting bracket; 8. First slide groove; 9. First annular member; 10. Reinforcement rod; 11. First roller; 12. First rotating shaft; 13. Bearing; 14. Cover; 15. Second motor; 16. Second gear; 17. Second annular member; 18. Gear ring; 19. Second roller; 20. Second rotating shaft; 21. Housing; 22. Main control circuit board; 23. Battery; 24. Soft rubber sleeve; 25. Second mounting bracket; 26. Left handle; 27. Right handle; 28. Control button. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0029] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "front," "rear," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] Combine Figures 1-13 As shown, the present invention provides a new type of rotating and telescopic mechanism, comprising: Active part 1; The telescopic assembly is used to drive the movable part 1 to realize axial telescopic movement; The rotating assembly is used to drive the movable part 1 to rotate around its own axis; The outer wall of the movable part 1 is provided with an annular groove 2 arranged circumferentially around the outer wall and a strip groove 3 arranged axially; The telescopic assembly includes a first driving member, which is arranged in the annular groove 2 and is used to drive the movable member 1 to move back and forth, thereby realizing the telescopic movement; The rotating assembly includes a second driving member, and the second driving member is provided with a second protrusion. The second protrusion is arranged in the strip-shaped groove 3 and is used to drive the movable member 1 to rotate around its own axis.

[0033] The telescopic assembly includes a first driving mechanism, a first belt, and a pulley; The two sides of the first belt are respectively mounted on the first driving mechanism and the pulley, and the first driving member is mounted on the belt; The first driving mechanism drives the belt to rotate forward and reverse, thereby driving the first driving member to move back and forth, thereby driving the movable member 1 to move back and forth to achieve extension and retraction.

[0034] The rotating assembly includes a second driving mechanism and a second belt; The two sides of the second belt are respectively mounted on the second driving mechanism and the second driving member. The second driving mechanism drives the second belt to rotate, and then drives the second driving member to rotate, thereby driving the movable member 1 to rotate.

[0035] The telescopic assembly includes a first motor 4, a lead screw 5, a nut 6, and a first mounting bracket 7; The first driving member is a first annular member 9; The first mounting frame 7 is provided with a first sliding groove 8; The lead screw 5 is mounted on the output shaft of the first motor 4, and the nut 6 is mounted on the lead screw 5 through a thread, and the nut 6 is also arranged in the first sliding groove 8; The first motor 4 drives the screw 5 to rotate, and the first slide groove 8 is used to limit the rotation of the nut 6, thereby converting the forward and reverse rotation motion into a linear reciprocating motion. The first annular member 9 is installed on the nut 6, thereby driving the movable member 1 to achieve telescopic motion.

[0036] Two nuts 6 are provided on the lead screw 5 through the same thread, and each nut 6 is provided with a first annular member 9; One of the first annular members 9 is disposed in the annular groove 2 , and the other first annular member 9 is sleeved on the movable member 1 .

[0037] Two reinforcing rods 10 are further fixedly connected between the two first annular members 9 , and two ends of the reinforcing rods 10 are respectively fixed on the two first annular members 9 .

[0038] A first protrusion is further provided on the inner wall of the first annular member 9 , and the first protrusion is embedded in the annular groove 2 of the movable member 1 to drive the movable member 1 to move back and forth.

[0039] The first protruding member is composed of a first roller 11 and a first rotating shaft 12. The first roller 11 is sleeved on the first rotating shaft 12. The first rotating shaft 12 is mounted on the inner wall of the annular member 9. The first roller 11 is embedded in the annular groove 2 of the movable member 1. The axis direction of the first roller 11 is parallel to the axis direction of the movable member 1, so as to facilitate the rotation of the movable member 1. The end of the lead screw 5 away from the first motor 4 is further provided with a bearing 13, and the bearing 13 is mounted on the first mounting frame 7; The first sliding groove 8 is provided with a cover 14 which is detachable by screws.

[0040] The rotating assembly includes a second motor 15 and a second gear 16; The second driving member is a second annular member 17, and the second annular member 17 is sleeved on the movable member 1; A gear ring 18 is provided on the outer wall of the second annular member 17; The second gear 16 is mounted on the output shaft of the second motor 15 , and the second gear 16 is meshed with the gear ring 18 on the outer wall of the second annular member 17 for transmission; The second motor 15 drives the second gear 16 to rotate, and then drives the second annular member 17 to rotate. The second protrusion provided on the inner wall of the second annular member 17 extends radially and is embedded in the strip groove 3 of the movable member 1, slidingly cooperates with the strip groove 3, and drives the movable member 1 to rotate.

[0041] The second protrusion is composed of a second roller 19 and a second rotating shaft 20; The second roller 19 is rotatably mounted on the second rotating shaft 20, and the second rotating shaft 20 is mounted on the inner wall of the second annular member 17; The axis of the second roller 19 is perpendicular to the axis of the movable member 1, so that the second roller 19 can roll along the axis of the movable member 1 in the strip groove 3 when the movable member 1 performs telescopic movement; The second roller 19 is embedded in the strip groove 3 , and the outer circumference of the second roller 19 contacts the side wall of the strip groove 3 , so as to drive the movable part 1 to rotate.

[0042] The movable member 1 is a cylindrical structure, the annular groove 2 is provided on the circumference of the outer wall of one end of the movable member 1, and the strip groove 3 is provided on the outer wall of the other end along the axial direction of the movable member 1; There are four strip-shaped grooves 3 , which are evenly distributed along the circumference of the movable part 1 , and a second protrusion is provided in each strip-shaped groove 3 .

[0043] The present invention also provides a massager, comprising the above-mentioned rotating and telescopic mechanism, the massager further comprising: a housing 21, a main control circuit board 22, a battery 23, and a soft rubber sleeve 24; The first mounting bracket 7 is mounted on a second mounting bracket 25 by bolts. The second mounting bracket 25 is fixed to the inner wall of the housing 21. The first mounting bracket 7 and the second mounting bracket 25 are arranged inside the housing 21. The main control circuit board 22 and the battery 23 are mounted on the side of the first mounting frame 7; The housing 21 is provided with a left handle 26 and a right handle 27 on both sides thereof; The left handle 26 and the right handle 27 are both provided with control buttons 28; The main control circuit board 22 is electrically connected to the first motor 4, the second motor 15, the battery 23, and the control button 28 respectively; The control button 28 on the left handle 26 is used to control the extension and retraction and to achieve stepless speed regulation; The control button 28 on the right handle 27 is used to control the rotation and achieve stepless speed regulation; The deeper the control button 28 is pressed, the faster the moving part 1 moves; The soft rubber sleeve 24 is installed inside the output end of the movable part 1 for massage contact.

[0044] The working principle of this patent: The core of this patented invention lies in an innovative slot structure and transmission component design that enables the movable part 1 to independently perform both telescopic and rotational motions, and these two motions can occur simultaneously without interfering with each other (i.e., motion decoupling). Its working principle is as follows: 1. Implementation of telescopic movement (axial movement): Power source and conversion: The first motor 4 of the telescopic assembly is started, driving the screw 5 connected to its output shaft to rotate.

[0045] Rotational to linear motion: The nut 6 is threadably mounted on the lead screw 5. Because the nut 6 is confined within the first slot 8 of the first mounting bracket 7 and cannot rotate with the lead screw 5, the rotational motion of the lead screw 5 is forcibly converted into linear reciprocating motion of the nut 6 along the axial direction of the lead screw 5 (i.e., along the axis of the movable element 1).

[0046] Transmitting telescopic force: A first annular member 9 is fixed to the nut 6. A first protrusion (preferably a first roller 11 with an axis parallel to the axis of the movable member 1) is provided on the inner wall of the first annular member 9, and the first roller 11 is embedded in the annular groove 2 on the outer wall of the movable member 1.

[0047] Driving the movable part 1 to extend and retract: When the nut 6 moves axially along the lead screw 5, it drives the first annular member 9 to move accordingly. The first annular member 9 transmits the axial force to the movable part 1 via the first roller 11 embedded in the annular groove 2, thereby pushing or pulling the movable part 1 to perform precise reciprocating telescopic motion along its own axis. At this time: The function of annular groove 2 is to surround the entire circumference of movable element 1, allowing first roller 11 to roll freely within it. The key point is that when movable element 1 needs to rotate, annular groove 2 does not restrict its rotational motion because the roller can roll freely along the circumference of annular groove 2. This rolling motion significantly reduces frictional resistance.

[0048] Double nuts 6 and reinforcing rod 10: Two nuts 6 and corresponding first annular members 9 are provided on the lead screw 5 and connected with a reinforcing rod 10, which significantly enhances the rigidity and stability of the drive mechanism and prevents the movable member 1 from bending when extended too long.

[0049] 2. Implementation of rotational motion (rotation around an axis): Power source: The second motor 15 of the rotating assembly is started, driving the second gear 16 connected to its output shaft to rotate.

[0050] Gear meshing transmission: The second gear 16 meshes with a ring gear 18 on the outer wall of the second annular member 17. Therefore, the rotation of the second gear 16 drives the second annular member 17 to rotate around the outer periphery of the movable member 1.

[0051] Transmitting rotational force: A second protrusion (preferably a second roller 19 with an axis perpendicular to the axis of the movable part 1 ) is installed on the inner wall of the second annular part 17 , and the second roller 19 is embedded in the strip groove 3 on the outer wall of the movable part 1 .

[0052] Driving the movable part 1 to rotate: When the second annular member 17 rotates, the second roller 19 on its inner wall (which contacts the sidewall of the strip groove 3 through its outer circumference) exerts a tangential force on the sidewall of the strip groove 3. Because the strip groove 3 extends axially (i.e., in the direction of the axis of the movable part 1), this force causes the movable part 1 to rotate around its own axis. At this time: The function of the strip groove 3 is to provide an axial guide path for the second roller 19. The key point is that when the movable member 1 needs to extend or retract, the second roller 19 can smoothly roll within the strip groove 3 along the axis of the movable member 1 without restricting its axial movement. This rolling motion significantly reduces frictional resistance.

[0053] Uniform distribution (optional): Four circumferentially evenly distributed strip grooves 3 and the second roller 19 ensure the balance and stability of the rotational torque transmission.

[0054] 3. The key to decoupling compound motion and motion: Simultaneous operation: The telescopic movement and the rotational movement can be started simultaneously (controlled by the first motor 4 and the second motor 15 independently).

[0055] Decoupling Mechanism: The annular groove 2 + axial roller (first roller 11) combination transmits only axial force (expansion). When movable part 1 rotates due to the action of the rotating assembly, first roller 11 rolls circumferentially within annular groove 2 and does not hinder the rotation of movable part 1. Conversely, the strip groove 3 + radial roller (second roller 19) combination transmits only circumferential force (rotation). When movable part 1 moves axially due to the action of the telescopic assembly, second roller 19 rolls axially within strip groove 3 and does not hinder the axial movement of movable part 1.

[0056] Non-interference: Therefore, the power transmission paths of the two motions are isolated and complementary on movable part 1: the extension power is transmitted through the annular groove 2, and the rotation power is transmitted through the strip groove 3. This allows movable part 1 to independently and simultaneously complete the two compound motions of extension and rotation, and the two motions are completely decoupled.

[0057] 4. Application in massager: Human-computer interaction: The user can start and adjust the operating speed (massage depth / intensity) of the telescopic component through the control button 28 on the left handle 26 (pressing depth controls speed); and start and adjust the operating speed (massage speed / kneading speed) of the rotating component through the control button 28 on the right handle 27.

[0058] Mode combination: users can independently control extension or rotation, or control both at the same time for a compound massage (such as pushing, pressing and kneading at the same time).

[0059] Comfortable execution: The soft rubber sleeve 24 at the end of the movable part 1 ultimately transmits the telescopic and / or rotational motion generated by the mechanism to the massaged part of the human body.

[0060] To summarize the working principle: The present invention cleverly achieves the following by designing a structure that includes both an annular groove 2 and a strip groove 3 on the outer wall of the movable member 1, and matching it with a special annular driving member with a roller (a first annular member 9 is used for extension and contraction, and a second annular member 17 is used for rotation): Annular groove 2 + axial roller: efficiently transmit axial telescopic power and constrain circumferential displacement, while allowing the movable part 1 to rotate freely.

[0061] Strip groove 3 + radial roller: efficiently transmits rotational power and constrains circumferential motion, while allowing the movable part 1 to freely extend and retract.

[0062] Core decoupling: These two drive and restraint mechanisms are independent and mutually exclusive. The roller structure significantly reduces friction, enabling the movable element 1 to efficiently, stably, and smoothly execute independent or simultaneous telescopic and rotational motions. This design is particularly suitable for devices that require high-degree-of-freedom complex motion within a compact space, such as multi-function massagers.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the protection scope of the present invention.

Claims

1. A new type of rotating telescopic mechanism, characterized in that: include: movable parts; Telescopic assembly, used to drive the movable parts to achieve axial telescopic movement; Rotating assembly, used to drive the moving parts to rotate around their own axis; The outer wall of the movable part is provided with an annular groove arranged circumferentially around the outer wall and a strip groove arranged along the axial direction; The telescopic assembly includes a first driving member, which is arranged in the annular groove and is used to drive the movable member to move back and forth, thereby realizing the telescopic movement; The rotating assembly includes a second driving member, and the second driving member is provided with a second protrusion. The second protrusion is arranged in the strip-shaped groove and is used to drive the movable member to rotate around its own axis.

2. The rotary telescopic mechanism according to claim 1, characterized in that: The telescopic assembly includes a first driving mechanism, a first belt, and a pulley; The two sides of the first belt are respectively mounted on the first driving mechanism and the pulley, and the first driving member is mounted on the belt; The first driving mechanism drives the belt to rotate forward and reverse, thereby driving the first driving member to move back and forth, thereby driving the movable member to move back and forth to achieve extension and retraction.

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

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

5. The rotary telescopic mechanism according to claim 4, characterized in that: Two nuts are provided on the lead screw through the same thread, and each nut is provided with a first annular member; One of the first annular members is arranged in the annular groove, and the other first annular member is sleeved on the movable member; Two reinforcing rods are fixedly connected between the two first annular members, and two ends of the reinforcing rods are respectively fixed on the two first annular members.

6. The rotary telescopic mechanism according to claim 5, characterized in that: A first protrusion is further provided on the inner wall of the first annular member, and the first protrusion is embedded in the annular groove of the movable member to drive the movable member to move back and forth; The first protruding member is composed of a first roller and a first rotating shaft. The first roller is sleeved on the first rotating shaft. The first rotating shaft is installed on the inner wall of the annular member. The first roller is embedded in the annular groove of the movable member. The axis direction of the first roller is parallel to the axis direction of the movable member to facilitate the rotation of the movable member. The end of the lead screw away from the first motor is further provided with a bearing, and the bearing is mounted on the first mounting frame; The first sliding groove is provided with a cover which is detachable by screws.

7. The rotary telescopic mechanism according to claim 4, characterized in that: The rotating assembly includes a second motor and a second gear; The second driving member is a second annular member, and the second annular member is sleeved on the movable member; A gear 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 is meshed with the gear ring on the outer wall of the second annular member for transmission; The second motor drives the second gear to rotate, and then drives the second annular member to rotate. The second protrusion provided on the inner wall of the second annular member extends radially and embeds into the strip groove of the movable member, slidingly cooperates with the strip groove, and drives the movable member to rotate.

8. The rotary telescopic mechanism according to claim 7, characterized in that: The second protruding member is composed of a second roller and a second rotating shaft; The second roller is rotatably mounted on a second rotating shaft, and the second rotating shaft is mounted on the inner wall of the second annular member; The axis of the second roller is perpendicular to the axis of the movable member, so that the second roller can roll along the axis of the movable member in the strip groove when the movable member performs telescopic movement; The second roller is embedded in the strip-shaped groove, and the outer peripheral surface of the second roller contacts the side wall of the strip-shaped groove, so as to drive the movable part to rotate.

9. The rotary telescopic mechanism according to claim 6, characterized in that: The movable member is a cylindrical structure, the annular groove is provided on the circumference of the outer wall of one end of the movable member, and the strip groove is provided on the outer wall of the other end along the axial direction of the movable member; There are four strip-shaped grooves, which are evenly distributed along the circumference of the movable part, and a second protrusion is provided in each strip-shaped groove.

10. A massager comprising the rotating and telescopic mechanism according to any one of claims 4 to 9, characterized in that: The massager also includes: a shell, a main control circuit board, a battery, and a soft rubber sleeve; The first mounting frame is mounted on a second mounting frame by bolts, the second mounting frame is fixed to the inner wall of the housing, and the first mounting frame and the second mounting frame are arranged inside the housing; The main control circuit board and the battery are mounted on the side of the first mounting frame; A left handle and a right handle are respectively provided on both sides of the shell; Control buttons are provided on both the left handle and the right handle; The main control circuit board is electrically connected to the first motor, the second motor, the battery, and the control button respectively; The control button on the left handle is used to control the extension and retraction and achieve stepless speed regulation; The control button on the right handle is used to control the rotation and achieve stepless speed regulation; The deeper the control button is pressed, the faster the moving part moves; The soft rubber sleeve is installed inside the output end of the movable part for massage contact.

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