A massage mechanism and office chair

Abstract

This invention discloses a massage mechanism and an office chair, including a frame, a first main shaft, a massage component, a first movable seat, a support member, a first connecting rod, and a first drive mechanism. The massage component includes a first massage arm, which is sleeved on the main shaft via a first bushing. The main shaft is mounted on the movable seat. The support member is disposed on the frame and spaced apart from the movable seat. One end of the first connecting rod is movably connected to the first massage arm, and the other end is movably connected to the support member. When a first traveling motor drives the movable seat to reciprocate along a guide rail, the distance between the movable seat and the support member can change. The first connecting rod pushes the first massage arm to rotate around the main shaft, thereby driving the first massage head to perform massage actions on the user. This invention achieves a linear sliding friction massage. Compared with traditional point massage, the movement path of the first massage head in a single action cycle is significantly extended, and the linear area it acts on in space is expanded, improving the continuity and comfort of the massage action.

Description

Technical Field

[0001] This invention relates to the field of massage technology, and in particular to a massage mechanism and an office chair. Background Technology

[0002] With the accelerating pace of life and increased health awareness, massage chairs, massage backrests, and other home and office massage devices are becoming increasingly popular. One existing massage mechanism includes a massage arm, a main shaft, an eccentric sleeve (or cam), and a motor. The eccentric sleeve is coaxially mounted with the main shaft, and one end of the massage arm is movably sleeved outside the eccentric sleeve. The motor drives the main shaft to rotate, and the eccentric design of the eccentric sleeve causes the massage heads on the massage arm to perform reciprocating tapping massage, thereby providing point-tapping or kneading massage to areas such as the shoulders, back, waist, and hips.

[0003] However, the aforementioned massage mechanism has significant technical limitations: because the eccentric bushing can only drive the massage arm to perform limited reciprocating movements along a fixed trajectory, the massage head's effective range is highly concentrated in a single or very small local area, making it impossible to achieve continuous lateral or longitudinal coverage of the target muscle group. This "point massage" mode cannot effectively simulate natural techniques such as human hand massage and cannot meet users' needs for a large-area massage experience. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a massage mechanism and office chair, which, through structural optimization, can expand the massage coverage area and improve the dynamic range and comfort of the massage.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a massage mechanism, including a frame, a main shaft and a massage component; the frame is provided with a guide rail, the massage component includes a first massage arm, one end of the first massage arm is provided with a first bushing, the first massage arm is sleeved on the main shaft through the first bushing, and the other end of the first massage arm is provided with a first massage head;

[0006] It also includes a movable base, a support component, a first connecting rod, and a first travel motor;

[0007] The main shaft is mounted on the movable base, and the first traveling motor drives the movable base to reciprocate along the guide rail;

[0008] The support member is disposed on the frame and spaced apart from the movable seat. One end of the first connecting rod is movably connected to the first massage arm, and the other end is movably connected to the support member.

[0009] When the first walking motor drives the movable seat to reciprocate along the guide rail, the distance between the movable seat and the support member may change. The first connecting rod will push the first massage arm to rotate around the main shaft, thereby driving the first massage head to perform a massage action on the user.

[0010] In a preferred embodiment, a second traveling motor is also included. The second traveling motor is disposed on the support member. The second traveling motor drives the support member to move along the guide rail. By moving closer to, following, and moving away from the movable seat, the distance between the support member and the movable seat is changed or maintained, thereby maintaining or changing the rotation state of the first massage arm.

[0011] In a preferred embodiment, the support member is provided with a rotating shaft, the rotating shaft is provided with a first traveling gear, the first traveling gear meshes with the guide rail, and a second traveling motor drives the rotating shaft to rotate so as to drive the support member to travel on the guide rail; the other end of the first connecting rod is movably sleeved on the outer periphery of the rotating shaft.

[0012] In a preferred embodiment, an auxiliary support structure is provided between the movable seat and the support member. The auxiliary support structure includes a slide rod and a sliding groove that cooperates with it. The slide rod extends along the moving direction of the movable seat, and one end of the slide rod is fixed to one of the movable seat and the support member. The sliding groove is provided in the other of the movable seat and the support member and slides in cooperation with the other end of the slide rod.

[0013] In a preferred embodiment, the movable seat is provided with a traveling shaft, which is spaced apart from the main shaft. The first traveling motor drives the traveling shaft to rotate, thereby causing the movable seat to move relative to the guide rail.

[0014] In a preferred embodiment, the traveling shaft is provided with a second traveling gear, which meshes with the guide rail, and the first traveling motor drives the traveling shaft to rotate so as to drive the movable seat to travel on the guide rail.

[0015] In a preferred embodiment, the massage assembly further includes a second massage arm, one end of which is provided with a second bushing, the second bushing being spaced apart from the first massage arm on the main shaft, and the other end of the second massage arm is provided with a second massage head.

[0016] In a preferred embodiment, the main shaft is provided with a cam, and the second bushing is sleeved on the outer periphery of the cam; it also includes a second connecting rod, one end of which is movably connected to the second massage arm, and the other end of which is movably connected to the walking shaft.

[0017] In a preferred embodiment, the system further includes a kneading motor mounted on the movable base, which drives the main shaft to rotate. The main shaft has an inclined cam, and the first bushing is fitted around the outer periphery of the inclined cam. The main shaft also has a third traveling gear, which is rotatably mounted on the main shaft. The third traveling gear meshes with the guide rail. When the first traveling motor is in a stopped state, the first massage arm performs kneading massage on the corresponding parts of the human body under the drive of the kneading motor.

[0018] In a preferred embodiment, the support member is fixedly mounted on the frame; the support member is a fixed shaft, which is arranged parallel to the main shaft.

[0019] In a preferred embodiment, the system further includes a first control module for controlling the start and stop of the first walking motor. The first control module is disposed on the movable base and includes a first Hall sensor, which cooperates with a plurality of first magnets distributed on the frame along the extension direction of the guide rail. The system also includes a second control module for controlling the start and stop of the second walking motor. The second control module is disposed on the support member and includes a second Hall sensor, which cooperates with a plurality of second magnets distributed on the frame along the extension direction of the guide rail.

[0020] The present invention also provides an office chair, including a backrest and a massage mechanism as described above, wherein the massage mechanism is installed on the backrest; the guide tube extends along the vertical direction of the backrest.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This invention uses a first traveling motor to drive a movable seat to reciprocate along a guide rail. Combined with the mechanical linkage between the support member and the first connecting rod, this causes the first massage arm to rotate periodically around the main shaft. This drives the first massage head to form a continuous reciprocating sliding trajectory along the extension direction of the guide rail, achieving a linear sliding friction massage action. Compared to traditional point massage, the movement path of the first massage head within a single action cycle is significantly extended in this invention, expanding its linear area of ​​action in space and improving the continuity and comfort of the massage action. Furthermore, the massage intensity can be dynamically adjusted during the sliding process, allowing for convenient adjustment of the output intensity based on the user's body type, muscle tension, and the massage area.

[0023] 2. This invention, by setting a second traveling motor on the support member, allows the support member to move along the guide rail to change or maintain the interval between it and the moving seat by moving closer to, following, or moving away from the moving seat. When the interval changes, the angle of the first connecting rod is adjusted accordingly, thereby changing the rotation amplitude and movement phase of the first massage arm around the main axis, causing a corresponding change in the intensity of the first massage head on the contact surface, thus achieving dynamic adjustment of the massage intensity. When the interval remains constant, the relative position of the moving seat and the support member is fixed, and the massage area of ​​the first massage head changes, thus allowing the user to adjust the massage area according to their body shape or massage needs.

[0024] 3. This invention features a rotating shaft on the support member, with a first traveling gear meshing with a guide rail mounted on the shaft. A second traveling motor drives the shaft to rotate, causing the support member to travel along the guide rail. Simultaneously, the other end of the first connecting rod is movably fitted onto the rotating shaft. This design achieves smooth movement of the support member along the guide rail while allowing the angle of the first connecting rod to be maintained or dynamically adjusted according to changes in the position of the support member, providing a reliable mechanical basis for adjusting the movement of the first massage arm.

[0025] 4. The present invention provides a sliding rod and sliding groove mating structure between the movable seat and the support member, which extends along the guide rail. This structure does not affect the relative movement between the movable seat and the support member, and allows them to serve as support points for each other in both moving and stationary states, thereby improving the overall structural stability of the movable seat and / or the support member.

[0026] 5. This invention provides a traveling shaft spaced apart from the main shaft on the movable seat, and drives the traveling shaft to rotate by a first traveling motor, so that the traveling shaft drives the movable seat to move along the guide rail. This structure realizes direct mechanical drive of the movable seat. Compared with belt or friction transmission, it has the advantages of constant transmission ratio, no slippage, low noise, and long service life, ensuring the accuracy of movable seat movement and the reliability of long-term operation.

[0027] 6. The present invention provides a second massage arm on the main shaft, with one end connected to the main shaft via a second bushing and the other end equipped with a second massage head. A cam is provided on the main shaft, and the second bushing is fitted around the outer periphery of the cam. The second massage arm is connected to the travel shaft via a second connecting rod, so that the second massage arm can generate reciprocating swing independently of the first massage arm, thereby realizing the coordinated movement of the two massage heads, expanding the massage coverage area of ​​a single action, and improving massage efficiency.

[0028] 7. The present invention improves the user's massage experience by setting a kneading motor to drive the main shaft to rotate on the moving seat, and setting an inclined cam on the main shaft, so that the first shaft sleeve is fitted on the outer periphery of the inclined cam, so that the first massage head forms a massage action similar to human hand kneading.

[0029] 8. A third traveling gear is provided on the main shaft, which is rotatably mounted on the main shaft and meshes with the guide rail. This structure not only does not affect the rotation of the main shaft relative to the moving seat around its own axis, but also achieves precise and stable displacement control of the moving seat. At the same time, since there is no need for external slide rails or push rods, the requirement for the moving seat's movement space is significantly reduced, making the overall structure more compact.

[0030] 9. This invention, by setting a first control module on the movable seat, including a first Hall sensor, and cooperating with multiple first magnets distributed along the guide rail on the frame, is used to detect the position of the movable seat, realize precise start-stop and reversing control of the first traveling motor, improve the repeatability and positioning accuracy of the movable seat's movement trajectory, and provide a non-contact position feedback basis for programmed massage. Similarly, this invention, by setting a second control module on the support member, including a second Hall sensor, and cooperating with multiple second magnets distributed along the guide rail on the frame, is used to detect the position of the support member, realize precise start-stop and reversing control of the second traveling motor, improve the controllability and synchronization of the support member's displacement, and provide stable position sensing support for multi-axis coordinated motion.

[0031] 10. This invention not only expands the massage coverage area, but also enables a variety of different massage functions, greatly enhancing the user's massage experience.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the massage mechanism and office chair of the present invention are not limited to the embodiments. Attached Figure Description

[0033] Figure 1 This is an exploded view of the massage mechanism of the present invention in Embodiment 1;

[0034] Figure 2 This is a schematic diagram of the massage mechanism of the present invention in Embodiment 1;

[0035] Figure 3 This is a schematic diagram of the massage mechanism of the present invention in the first and second cover states as described in Embodiment 1.

[0036] Figure 4 This is a schematic diagram of the cam structure of the present invention in Embodiment 1;

[0037] Figure 5 This is a schematic diagram illustrating the cooperation between the second massage arm and the cam, etc., according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the massage mechanism of the present invention in the massage state before the massage intensity is adjusted, as shown in Embodiment 1. Figure 1 ;

[0039] Figure 7This is a schematic diagram of the massage mechanism of the present invention in the massage state before the massage intensity is adjusted, as shown in Embodiment 1. Figure 2 ;

[0040] Figure 8 This is a schematic diagram of the massage mechanism of the present invention after the massage intensity is adjusted, as shown in Embodiment 1. Figure 1 ;

[0041] Figure 9 This is a schematic diagram of the massage mechanism of the present invention after the massage intensity is adjusted, as shown in Embodiment 1. Figure 2 ;

[0042] Figure 10 This is a schematic diagram of the massage state of the massage mechanism of the present invention after the massage position is adjusted, as shown in Embodiment 1. Figure 1 ;

[0043] Figure 11 This is a schematic diagram of the massage state of the massage mechanism of the present invention after the massage position is adjusted, as shown in Embodiment 1. Figure 2 ;

[0044] Figure 12 This is a schematic diagram of the massage mechanism of the present invention in Embodiment 2;

[0045] Figure 13 This is a schematic diagram of the structure of the office chair of the present invention, as shown in Embodiment 3. Figure 1 ;

[0046] Figure 14 This is a schematic diagram of the structure of the office chair of the present invention, as shown in Embodiment 3. Figure 2 ;

[0047] In the diagram, 1. Frame; 11. Guide rail; 111. Rack and pinion structure; 12. Crossbeam; 2. Main shaft; 21. Third traveling gear; 22. Bearing; 3. Kneading motor; 31. Third double gear; 32. Third helical gear; 4. Massage assembly; 41. First massage arm; 411. First bushing; 411. Ball head cover; 42. First massage head; 43. Inclined cam; 44. Second massage arm; 45. Second massage head; 46. Cam; 5. Moving seat; 51. Slide groove; 6. First connecting rod; 61. Ball joint; 62. Support base; 7. Second connecting rod; 8. Traveling shaft; 81. Second traveling gear; 9. First traveling motor; 91. Second double gear; 92. Second helical gear; 10. Rotating shaft; 101. First traveling gear; 20. Support component; 201. Slide rod; 30. Second traveling motor; 301. First double gear; 302. Second helical gear; 40. First control module; 401. First Hall sensor; 50. Second control module; 501. Second Hall sensor; 60. Backrest; 70. Fixing rod. Detailed Implementation

[0048] In this invention, the terms "first," "second," and "third," etc., are used only to distinguish similar objects, not to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, and is only for the convenience of describing the invention, not to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, it should not be construed as a limitation on the scope of protection of this invention. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] Furthermore, in the description of this invention, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0050] Example 1

[0051] Please see Figures 1-11 As shown, a massage mechanism of the present invention includes a frame 1, a main shaft 2, and a massage assembly 4. The frame 1 is provided with a guide rail 11. The massage assembly 4 includes a first massage arm 41, one end of which is provided with a first bushing 411, and the first massage arm 41 is sleeved on the main shaft 2 through the first bushing 411; the other end of the first massage arm 41 is provided with a first massage head 42. The present invention also includes a movable seat 5, a support member, a first connecting rod 6, and a first traveling motor 9. The main shaft 2 is mounted on the movable seat, and the first traveling motor 9 drives the movable seat 5 to reciprocate along the guide rail 11. The support member 20 is provided on the frame 1 and spaced apart from the movable seat 5. One end of the first connecting rod 6 is movably connected to the first massage arm 41, and the other end is movably connected to the support member 20. Specifically, one end of the first connecting rod 6 is movably connected to the first massage arm 41 at the portion between its two ends (preferably the middle portion).

[0052] When the first traveling motor 9 drives the movable seat 5 to reciprocate along the guide rail 11, the distance between the movable seat 5 and the support member 20 can change. The first connecting rod 6 will push the first massage arm 41 to rotate around the main shaft 2, thereby driving the first massage head 42 to perform a massage action on the user. In addition, when the distance between the movable seat 5 and the support member 20 changes, the angle of the first connecting rod 6, which is connected to the first massage arm 41 and the support member 20 at its two ends respectively, changes accordingly, thereby adjusting the pressure of the first massage head 42 on the massaged part of the human body, realizing a dynamic response of massage intensity.

[0053] The first walking motor 9 can also drive the moving seat 5 to move along the guide rail 11 to a set position and stop at that position, thereby changing the massage area of ​​the first massage head.

[0054] In a preferred embodiment, the present invention further includes a second traveling motor 30, which is mounted on the support member 20. The second traveling motor 30 drives the support member 20 to move along the guide rail 11, changing or maintaining the distance between it and the moving seat 5 by moving closer to, following, or moving away from the moving seat 5, thereby maintaining or changing the rotation state of the first massage arm 41. Specifically, when the distance between the moving seat 5 and the support member 20 changes, the angle of the first connecting rod 6 is adjusted accordingly, thereby changing the rotation amplitude and movement phase of the first massage arm 41 around the main shaft 2, causing a corresponding change in the intensity of the first massage head 42 on the contact surface, realizing dynamic adjustment of the massage intensity. When the support member 20 moves with the moving seat 5, keeping the distance between them constant, the relative position of the moving seat 5 and the support member 20 is fixed, the massage area of ​​the first massage head 42 changes, but the massage intensity of the first massage head 42 remains unchanged, thus allowing the user to adjust the massage area according to their body shape or massage needs.

[0055] A rotating shaft 10 is provided on the support member 20, and the rotating shaft 10 is parallel to the main shaft 2. A first traveling gear 101 is provided on the rotating shaft 10, and the first traveling gear 101 meshes with a guide rail 11. Specifically, a rack structure 111 is formed on the guide rail 11, which meshes with the first traveling gear 101. A second traveling motor 30 drives the rotating shaft 10 to rotate, thereby causing the support member 20 to move on the guide rail 11. Specifically, the output shaft of the second traveling motor 30 is provided with a first double gear 301, which meshes with a first helical gear 302 coaxially fixed on the rotating shaft 10, thereby transmitting rotational power to the rotating shaft 10 and achieving its stable rotation.

[0056] Furthermore, an auxiliary support structure is provided between the movable seat 5 and the support member 20. This auxiliary support structure includes a slide rod 201 and a corresponding sliding groove 51. The slide rod 201 extends along a predetermined direction, and one end of the slide rod 201 is fixed to one of the movable seat 5 and the support member 20. The sliding groove 51 is located in the other of the movable seat 5 and the support member 20 and slides in cooperation with the other end of the slide rod 201. In this embodiment, one end of the slide rod 201 is located in the support member 20 and the sliding groove 51 is located in the movable seat 5, but this is not the only example. This structure does not affect the relative movement between the movable seat 5 and the support member 20, and allows them to serve as mutual support points in both moving and stationary states, thereby improving the overall structural stability of the movable seat 5 and / or the support member 20.

[0057] In this embodiment, the movable seat 5 is provided with a traveling shaft 8, which is spaced apart from the main shaft 2 and parallel to each other. The traveling shaft 8 is located on the side of the main shaft 2 away from the rotating shaft 10. The first traveling motor 9 drives the traveling shaft 8 to rotate, thereby causing the movable seat 5 to move relative to the guide rail 11. Further, the traveling shaft 8 is provided with a second traveling gear 81, which meshes with the guide rail 11. The first traveling motor 9 drives the traveling shaft 8 to rotate, thereby causing the movable seat 5 to move on the guide rail 11. Specifically, the output shaft of the first traveling motor 9 is provided with a second double gear 91, which meshes with a second helical gear 92 fixed coaxially on the traveling shaft 8, thereby transmitting rotational power to the traveling shaft 8 and achieving its stable rotation.

[0058] The invention also includes a kneading motor 3. The main shaft 2 is rotatably mounted on the movable base 5 via multiple bearings 22, and is driven to rotate by the kneading motor 3 located on the movable base 5. Specifically, a third double gear 31 is provided on the output shaft of the kneading motor 3, which meshes with a third helical gear 32 coaxially fixed on the main shaft 2, thereby transmitting rotational power to the main shaft 2 and achieving its stable rotation. The main shaft 2 is provided with an inclined cam 43, and a first bushing 411 is sleeved on the outer periphery of the inclined cam 43; the main shaft 2 is provided with a third traveling gear 21, which is rotatably sleeved on the main shaft 2; the third traveling gear 21 meshes with the guide rail 11; when the first traveling motor 9 is in the stopped state, the first massage arm 3 performs kneading massage on the corresponding parts of the human body under the drive of the kneading motor 3. This structure eliminates motion interference between the translation and rotation of the main shaft 2 on the one hand; on the other hand, through the meshing of the third travel gear 21 with the guide rail 11, it can provide auxiliary support for the moving seat 5. Combined with the meshing of the second travel gear 81 with the guide rail 11, it effectively improves the stability of the moving seat 5.

[0059] In a preferred embodiment, one end of the first connecting rod 6 is movably connected to the first massage arm 41 via a ball joint 61. The first massage arm 41 has a hemispherical cavity, which, together with the ball cap 411, forms a ball cavity that mates with the ball joint 61. The other end of the first connecting rod 6 is movably sleeved on the outer periphery of the rotating shaft 10 via a support seat 62. Multiple first massage arms 41 are provided and arranged in pairs. Two first massage arms 41 in each pair are distributed along the axial direction of the main shaft 2, and the first massage heads 42 in each pair are arranged opposite each other. In this embodiment, two first massage arms 41 are used as an example, but this is not a limitation. Correspondingly, two first connecting rods 6 are also provided, corresponding one-to-one with the two first massage arms 41. When the main shaft 2 rotates, the tilting cam 43, because its central axis does not coincide with the central axis of the main shaft 2 and forms an angle, drives the first massage arm 41 to generate a non-planar and asymmetrical composite motion trajectory in three-dimensional space; the ball joint 61 transmits the driving torque during this motion and adapts to the spatial posture changes of the first massage arm 41 to avoid stress concentration; the paired first massage heads 42 cooperate from both sides to clamp the same muscle area during the motion, forming a composite massage action similar to human hand kneading.

[0060] The massage component 4 of the present invention further includes a second massage arm 44, one end of which is provided with a second bushing and the other end with a second massage head 45. The second bushing is spaced apart from the first massage arm 41 on the main shaft 2. Further, a cam 46 is provided on the main shaft, and the second bushing is sleeved on the outer periphery of the cam 46. The present invention also includes a second connecting rod 7, one end of which is movably connected to the second massage arm 44, and the other end is connected to the traveling shaft 8. In this embodiment, the central axis of the cam 46 is parallel to the central axis of the main shaft 2. Both ends of the second connecting rod 7 are pivotally connected, and this pivotal structure is composed of a pin and / or bushing, allowing the second connecting rod 7 to rotate freely around its axis at the two connection points, thereby transmitting torque and adapting to changes in spatial posture during movement. In this embodiment, two second massage arms 44 are used as an example, located on the opposite inner sides of the two first massage arms 41. Correspondingly, two second connecting rods 7 are also provided, corresponding one-to-one with the two second massage arms 44. When the main shaft 2 rotates under the drive of the kneading motor 3, the cam 46 rotates synchronously, causing the second massage arm 44 to oscillate periodically; at the same time, the oscillation amplitude of the second massage arm 44 is limited by the second link 7. Under the combined action of the rotation drive of the cam 46 and the linkage constraint of the second link 7, the second massage head 45 can perform high-frequency, fixed-point tapping massage on the human body parts.

[0061] This invention enables a single spindle 2 to simultaneously drive two sets of massage arms to work together during rotation. The first massage arm 41 performs basic kneading through the tilting cam 43, while the second massage arm 44 generates auxiliary pressing, forming a multi-mode, multi-angle composite massage effect, expanding the massage coverage area and enhancing the massage layering.

[0062] The present invention also includes a first control module 40 for controlling the start and stop of the first travel motor 9. This first control module 40 is located on the movable base 5 and includes a first Hall sensor 401, which cooperates with a plurality of first magnets distributed along a preset direction on the frame 1. The present invention also includes a second control module 50 for controlling the start and stop of the second travel motor 30. This second control module 50 is located on the support member 20 and includes a second Hall sensor 501, which cooperates with a plurality of second magnets distributed along a preset direction on the frame 1. When the movable base 5 moves, the first Hall sensor 401 detects a change in the magnetic field of the corresponding first magnet and outputs a position signal. The first control module 40 then precisely controls the start and stop of the first travel motor 9 accordingly. Similarly, when the support member 20 moves, the second Hall sensor 501 detects a change in the magnetic field of the corresponding second magnet and outputs a position signal. The second control module 50 then precisely controls the start and stop of the second travel motor 30 accordingly. Therefore, the present invention achieves non-contact, wear-free, and high-precision closed-loop position control, supporting multi-segment memory and intelligent adjustment.

[0063] In this embodiment, the frame 1 has a frame-like structure, including two guide rails 11 arranged parallel to each other in the left-right direction and two crossbeams 12 distributed in the up-down direction. The movable seat 5 consists of a first housing and a first cover connected to the first housing. Similarly, the support member 20 consists of a second housing and a second cover connected to the second housing.

[0064] The working principle of a massage mechanism of the present invention is as follows;

[0065] When only the kneading motor 3 is activated, the main shaft 2 is driven by the kneading motor 3 to rotate continuously. Its central axis forms a spatial angle with the central axis of the tilting cam 43. Therefore, the tilting cam 43 generates a non-planar, three-dimensional composite trajectory during rotation. Combined with the swing limiting effect of the first connecting rod 6, it drives the first massage arm 41 sleeved on its outer side to produce a kneading massage effect. At the same time, the cam 46 drives the second massage arm 44 to swing back and forth. Combined with the swing limiting effect of the second connecting rod 7, the second massage arm 44 produces a tapping massage effect on the corresponding parts of the human body.

[0066] When only the first traveling motor 9 is activated, and the first traveling motor 9 drives the movable seat 5 to move reciprocally, the distance between the movable seat 5 and the support member 20 changes, thereby changing the distance between the main shaft 2 and the rotating shaft 10. This causes a change in the angle of the first connecting rod 6, which pushes the first massage arm 41 to rotate around the main shaft 2. This, in turn, causes the first massage head 42 to form a continuous reciprocating sliding trajectory along the extension direction of the guide rail, achieving a linear sliding friction and expanding the massage area for the user. Simultaneously, the amount of thrust of the first massage arm 41 onto the massaged area changes, thereby achieving dynamic adjustment of the massage intensity. Figures 6-9 As shown.

[0067] When the first traveling motor 9 drives the movable seat 5 to move along the guide rail 11 to the set position and then stops, the distance between the movable seat 5 and the support member 20 changes, thereby changing the distance between the main shaft 2 and the rotating shaft 10. This causes the angle of the first connecting rod 6 to change, and the first connecting rod 6 pushes the first massage arm 41 to rotate around the main shaft 2, thereby adjusting the massage area of ​​the massage component 4 on the human body. Based on this, through the driving action of the kneading motor 3, the massage component 4 kneads and taps the adjusted massage area.

[0068] When the massage area needs to be adjusted without changing the massage intensity, the first traveling motor 9 and the second traveling motor 30 start synchronously, enabling the movable seat 5 and the support member 20 to move synchronously in the same direction. At this time, the main shaft 2, the traveling shaft 8, and the rotating shaft 10, as components respectively mounted on the movable seat 5 and the support member 20, move synchronously in the same direction, driving the entire massage assembly 4 to move on the human body surface, achieving precise positioning of different massage areas, such as... Figure 10 , Figure 11 As shown.

[0069] When only the second walking motor 30 is started and the first walking motor 9 is not working, the second walking motor 30 drives the support member 20 to move along the guide rail 11 to the set position and stop, which changes the distance between the support member 20 and the moving seat 5, thereby changing the radial distance between the rotating shaft 10 and the main shaft 2. Through the linkage of the first connecting rod 6, the first massage arm 41 deflects around the main shaft 2, thereby realizing the adjustment of the massage intensity and the massage area.

[0070] This invention provides a massage mechanism that can be applied to ergonomic support devices such as massage chairs and office chairs. In this embodiment, an office chair is used as an example. Figure 13 , Figure 14 As shown, the massage mechanism of the present invention is installed on the backrest 60 of an office chair. Its main shaft 2, walking shaft 8 and rotating shaft 10 all extend along the left and right direction of the human body. The rotating shaft 10, main shaft 2 and walking shaft 8 are distributed from top to bottom in sequence and make relative displacements in the up and down direction to realize the adjustment of massage intensity and / or massage area.

[0071] When the massage area of ​​the first massage head 42 is adjusted to the shoulder area, and the first massage arm 41 reaches its maximum extension under the linkage of the first link 6, the first massage head 42 is directly facing and in contact with the shoulder area of ​​the human body, such as... Figure 14 As shown. At this time, because the radial distance between the main shaft 2 and the rotating shaft 10 is the smallest, the angle change of the first connecting rod 6 is the largest, and the pressure applied by the first massage head 42 to the shoulder muscles is the strongest, thereby achieving a deep kneading massage of the shoulder area.

[0072] When storage is required, by maximizing the distance between the support 20 and the movable seat 5, the protrusion of the first massage head 42 can be minimized. At the same time, the first massage arm 41 is close to the frame 1 in this state, minimizing the overall thickness of the massage mechanism in the direction perpendicular to the guide rail, so as to meet the needs of compact installation space. It is especially suitable for equipment bases with limited installation space, such as the backrest structure of chair products, which facilitates integration and storage.

[0073] Example 2

[0074] Please see Figure 12 As shown, the massage mechanism of the present invention differs from the first embodiment described above in that the support member is fixedly connected to the frame 1. In this embodiment, the support member is preferably a fixed shaft 70, which is arranged parallel to the main shaft 2. In this case, the fixed shaft 70 serves as a fixed fulcrum and does not participate in displacement, but only as a stable connection end for each of the first connecting rods 6.

[0075] Example 3

[0076] Please see Figures 1-14 As shown, an office chair of the present invention includes a backrest 60 and a massage mechanism as described in any of the above embodiments. The massage mechanism is mounted on the backrest 60, and its guide rail 11 extends along the vertical direction of the backrest 60. This structure allows users to enjoy a multi-dimensional, wide-area intelligent massage experience while seated, balancing comfort and functionality.

[0077] For details on the structure and working principle of the massage mechanism, please refer to the previous description; it will not be repeated here.

[0078] The present invention relates to a massage mechanism and an office chair. The parts not described herein are the same as or can be implemented using existing technologies.

[0079] The above embodiments are only used to further illustrate a massage mechanism and office chair of the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A massaging movement, comprising a frame, a main shaft and a massaging assembly; characterized in that: The frame is provided with guide rails, and the massage assembly includes a first massage arm. One end of the first massage arm is provided with a first bushing. The first massage arm is sleeved on the main shaft through the first bushing. The other end of the first massage arm is provided with a first massage head. It also includes a movable base, a support component, a first connecting rod, and a first travel motor; The main shaft is mounted on the movable base, and the first traveling motor drives the movable base to reciprocate along the guide rail; The support member is disposed on the frame and spaced apart from the movable seat. One end of the first connecting rod is movably connected to the first massage arm, and the other end is movably connected to the support member. When the first walking motor drives the movable seat to reciprocate along the guide rail, the distance between the movable seat and the support member may change. The first connecting rod will push the first massage arm to rotate around the main shaft, thereby driving the first massage head to perform a massage action on the user.

2. The massing movement according to claim 1, characterized in that: It also includes a second walking motor, which is mounted on the support member. The second walking motor drives the support member to move along the guide rail, and changes or maintains the interval between it and the moving seat by moving closer to, following, or moving away from the moving seat, thereby maintaining or changing the rotation state of the first massage arm.

3. The massing movement according to claim 2, characterized in that: The support member is provided with a rotating shaft, and the rotating shaft is provided with a first traveling gear. The first traveling gear meshes with the guide rail. The second traveling motor drives the rotating shaft to rotate so as to drive the support member to travel on the guide rail. The other end of the first connecting rod is movably sleeved on the outer circumference of the rotating shaft.

4. A massing movement according to claim 2 or 3, characterized in that: An auxiliary support structure is provided between the movable seat and the support member. The auxiliary support structure includes a slide rod and a sliding groove that cooperates with it. The slide rod extends along the moving direction of the movable seat, and one end of the slide rod is fixed to one of the movable seat and the support member. The sliding groove is provided in the other of the movable seat and the support member and slides with the other end of the slide rod.

5. The massing movement according to claim 1, wherein: The movable seat is provided with a traveling shaft, which is spaced apart from the main shaft. The first traveling motor drives the traveling shaft to rotate, thereby causing the movable seat to move relative to the guide rail.

6. The massing movement according to claim 5, characterized in that: The traveling shaft is equipped with a second traveling gear, which meshes with the guide rail. The first traveling motor drives the traveling shaft to rotate so as to move the movable seat on the guide rail.

7. The massing movement according to claim 5, wherein: The massage assembly further includes a second massage arm, one end of which is provided with a second bushing, the second bushing being spaced apart from the first massage arm on the main shaft, and the other end of the second massage arm is provided with a second massage head.

8. The massing movement according to claim 7, characterized in that: The main shaft is provided with a cam, and the second bushing is sleeved on the outer periphery of the cam; it also includes a second connecting rod, one end of which is movably connected to the second massage arm, and the other end of which is movably connected to the walking shaft.

9. The massing movement according to any one of claims 1 or 5-8, characterized in that: It also includes a kneading motor, which is mounted on the movable seat and drives the main shaft to rotate. The main shaft is provided with an inclined cam, and the first bushing is sleeved on the outer periphery of the inclined cam. The main shaft is provided with a third traveling gear, which is rotatably mounted on the main shaft. The third traveling gear meshes with the guide rail. When the first traveling motor is in a stopped state, the first massage arm performs kneading massage on the corresponding parts of the human body under the drive of the kneading motor.

10. The massing movement according to claim 1, wherein: The support member is fixedly mounted on the frame; the support member is a fixed shaft, which is arranged parallel to the main shaft.

11. A massing movement according to claim 2 or 3, characterized in that: It also includes a first control module for controlling the start and stop of the first walking motor, the first control module being disposed on the movable base and including a first Hall sensor, the first Hall sensor cooperating with a plurality of first magnets distributed on the frame along the extension direction of the guide rail; it also includes a second control module for controlling the start and stop of the second walking motor, the second control module being disposed on the support member and including a second Hall sensor, the second Hall sensor cooperating with a plurality of second magnets distributed on the frame along the extension direction of the guide rail.

12. An office chair comprising a backrest, characterized in that: It also includes a massage mechanism as described in any one of claims 1-11, the massage mechanism being mounted on the backrest; the guide rail extending along the vertical direction of the backrest.

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