Massage office chair

Abstract

The utility model relates to massage office chair technical field discloses a kind of massage office chairs, including cushion, chair back and massage movement. Chair back is constituted by back frame, front support part and rear support part, wherein front support part adopts flexible material to adhere to human back curve. Innovatively, flexible massage module is set between front and rear support parts, including left and right flexible rack and conductive strip, rack surface is equipped with the tooth profile structure engaged with massage movement. Massage movement is contacted with conductive strip by elastic contact and takes electricity, moves along the dynamic trajectory formed by flexible rack, realizes the multi-region massage from coccyx to head. When not working, movement can be hidden behind cushion, eliminate foreign body sensation. The structure is adapted to different body types through the collaborative deformation of flexible component, the hollow protruding design of back frame provides deformation space for module, and the rear support part is elastically deformed to enhance the fit. Power supply is adopted by built-in battery, to avoid cable restraint.

Description

Technical Field

[0001] This utility model relates to the field of massage office chair technology, specifically to a massage office chair. Background Technology

[0002] Office workers often sit for long periods, leading to fatigue in their lower back muscles, intervertebral discs, and neck and shoulder muscles, which can negatively impact their health over time. Office chairs with massage functions can effectively alleviate this fatigue. Traditional massage chairs are typically bulky, with fixed massage mechanisms that struggle to adapt to the different back curves of users, resulting in a less ergonomic massage. When massage functions are integrated into office chairs, the massage mechanism or related components are often fixed inside the chair back, which can create a feeling of discomfort on the user's back when not using a massage function, affecting daily comfort. Furthermore, some office chairs with integrated massage functions often use preset, fixed massage paths, failing to adapt to the individual needs of users of different heights and body types, thus limiting the comfort and effectiveness of the massage.

[0003] Current office chairs with massage functions typically only offer spot massage, providing localized fatigue relief. While the office massage chair shown in utility model patent document CN219699454U features a walking function and can provide full-back massage, the guide rails in this design can negatively impact back comfort when not performing a massage.

[0004] Therefore, existing massage office chairs often fail to adapt to the back curves of different users during massage, resulting in a decrease in massage effect; at the same time, the presence of the massage mechanism can easily cause a foreign body sensation during non-massage periods, affecting comfort. Utility Model Content

[0005] This utility model provides a massage office chair to solve the problem that existing massage office chairs cannot adapt to the different back curves of the human body and that the human body has a foreign body sensation on the back during non-massage periods, which affects comfort.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: In a first aspect, a massage office chair includes a seat cushion, a backrest, and a massage mechanism. The backrest includes a back frame fixed to one end of the seat cushion, a rear support member fixed to the inside of the back frame or integrally formed with the back frame, and a front support member connected to the side of the back frame near the seat cushion. The chair also includes: A massage module is provided between the front support member and the rear support member; The massage module is made of flexible material; The massage module includes a right flexible toothed bar and a left flexible toothed bar, which can deform according to the curve of the human back to adapt to different human body differences; The massage mechanism is movably connected to the massage module so that it runs along the curve of the human back during the massage period, while the human back does not feel any foreign object during the non-massage period.

[0007] Furthermore, the back frame is the load-bearing frame of the chair back. The side of the back frame near the seat cushion has a curved structure that conforms to the human back, and the middle part is hollow or protruding in a direction away from the seat cushion to avoid interfering with the rear support. The front support is made of a flexible material to support the human back and adapt to the human body shape under stress.

[0008] Furthermore, the massage module includes: The upper crossbeam is fixed to the inner wall of the back frame and is close to the upper end of the back frame; The lower crossbeam is fixed to the inner wall of the frame, near the other end of the back frame, and away from the seat cushion; The upper ends of the right flexible rack and the left flexible rack are connected to the upper crossbeam, and the lower ends are connected to the lower crossbeam. There is a gap between the right flexible rack and the left flexible rack to allow the massage mechanism to move. The right and left conductive strips are connected at one end to the upper crossbeam and at the other end to the lower crossbeam, and are respectively connected to the outer side of the right flexible rack and the left flexible rack. The right flexible rack, left flexible rack, right conductive strip, and left conductive strip are flexible structural components that deform synchronously with the deformation of the front support component.

[0009] Furthermore, the rear support member is made of a flexible or elastic material so that it deforms together with the massage module and the front support member and provides support to the massage module.

[0010] Furthermore, the right flexible toothed rack, left flexible toothed rack, right conductive strip and left conductive strip have the same curved shape as the back frame, and the adjacent surfaces of the right flexible toothed rack and left flexible toothed rack have tooth shape to engage with the massage mechanism, so that the massage mechanism can follow the tooth shape to move up and down to cover the massage area to the entire back of the human body.

[0011] Furthermore, the side of the massage mechanism near the right and left conductive strips is electrically connected to an elastic contact. The elastic contact makes conductive contact with the right and left conductive strips to provide operating power to the massage mechanism.

[0012] Furthermore, a left armrest and a right armrest are respectively connected to both sides of the back frame. A hand controller is fixed to one side of the seat cushion. An electrical control box is fixed to the bottom of the seat cushion, and the electrical control box is electrically connected to the hand controller, the right conductive strip, and the left conductive strip. A leg rest is connected to the bottom of the seat cushion by flipping it over. A gas spring is rotatably connected to the middle of the bottom of the seat cushion. A five-star foot is connected to the end of the gas spring away from the seat cushion. Multiple casters are rotatably connected to the lower end of the five-star foot.

[0013] Furthermore, the lower ends of the right and left flexible toothed racks extend away from the seat cushion and closer to the lower end of the back frame, so as to store the massage mechanism between the seat cushion and the back frame, avoiding the back area of ​​the human body, during non-massage periods.

[0014] Furthermore, the electrical control box is equipped with a storage battery to cooperate with the right and left conductive strips to prevent the wires from being pulled during the massage period; Furthermore, the massage mechanism includes: The housing is positioned between the left and right flexible racks; guide sleeves are symmetrically fixed on both sides of the housing and fit over the outer sides of the left and right flexible racks, the left conductive strip, and the right conductive strip; a dual-head motor is fixed inside the housing, located in the center, and electrically connected to the elastic contacts; a worm gear is fixed to the two drive ends of the dual-head motor; a turbine is rotatably mounted inside the housing, symmetrically distributed, and meshes with the worm gear; a first gear is coaxially fixed on the turbine near the front support; a second gear is rotatably mounted inside the housing, symmetrically distributed, and meshes with the first gear; a third gear is rotatably mounted on... The inner side of the housing is symmetrically distributed and meshes with the second gear; the rotating rod is axially arranged through the third gear and rotatably passes through the housing near the front support; the massage head is fixed to one end of the rotating rod and located in the housing near the front support; the transmission gear is coaxially fixed to the side of the third gear away from the front support; the follower gear is rotatably arranged inside the housing, symmetrically distributed, and meshes with the transmission gear; the travel gear is coaxially fixed to the end face of the follower gear, movably passes through the housing, and is located inside the guide sleeve, meshing with the flexible rack and the left flexible rack; the elastic contact is located between the guide sleeve and the housing.

[0015] The above-described solution of this utility model has at least the following beneficial effects: The design of the flexible massage module and deformable support allows the massage mechanism to deform and run along the curve of the human back, thus significantly improving the fit and comfort of the massage. At the same time, during non-massage periods, the massage mechanism is stored in the non-backrest area, completely eliminating the feeling of foreign objects and greatly improving the daily use comfort of the office chair.

[0016] The massage mechanism draws power through elastic contacts and conductive strips, moving along a dynamic trajectory formed by flexible toothed bars to achieve multi-zone massage from the tailbone to the head. When not in use, the mechanism can be hidden behind the seat cushion to eliminate the feeling of foreign objects. It adapts to different body shapes through the coordinated deformation of flexible components. The hollow protrusion design of the back frame provides deformation space for the module, and the elastic deformation of the rear support enhances the fit. It is powered by a built-in battery to avoid cable entanglement. Combined with the armrests, leg rests and adjustable gas spring structure, it achieves a unity of comfort and functionality in office settings. Attached Figure Description

[0017] Figure 1 An overall perspective view of the massage office chair provided in this embodiment of the utility model; Figure 2 A perspective view of the massage mechanism during non-massage periods provided in an embodiment of this utility model; Figure 3 A perspective view of the massage mechanism during the massage period provided in this embodiment of the utility model; Figure 4 An exploded perspective view of the chair back provided for an embodiment of this utility model; Figure 5 An exploded three-dimensional view of the massage office chair provided in this embodiment of the utility model; Figure 6 A perspective view of the massage module and massage mechanism assembly provided in an embodiment of this utility model; Figure 7 A perspective view of the massage mechanism provided for an embodiment of this utility model; Figure 8 A three-dimensional schematic diagram of the massage mechanism and the walking gear assembly provided in an embodiment of this utility model; Figure 9 A perspective view of the combination of a dual-head motor, a first gear, a second gear, a third gear, a follower gear, and a traveling gear provided for an embodiment of this utility model; Figure 10 A plan view of the combination of a dual-head motor, a first gear, a second gear, a third gear, a follower gear, and a traveling gear provided for an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures: In the diagram: 1. Chair back; 1-1. Back frame; 1-2. Rear support; 1-3. Massage module; 1-4. Front support; 2. Right armrest; 3. Left armrest; 4. Seat cushion; 5. Hand controller; 6. Electrical control box; 7. Chassis; 8. Leg rest; 9. Gas spring; 10. Five-star base; 11. Casters; 1-3-1. Upper crossbeam; 1-3-2. Right flexible rack; 1-3-3. Right conductive strip; 1-3-4. Left flexible rack; 1-3-5. Left conductive strip; 1-3-6. Massage mechanism; 1-3-7. Lower crossbeam ; 1-3-6-1, Housing; 1-3-6-2, Guide sleeve; 1-3-6-3, Dual-head motor; 1-3-6-4, Worm gear; 1-3-6-5, Turbine; 1-3-6-6, First gear; 1-3-6-7, Second gear; 1-3-6-8, Third gear; 1-3-6-9, Rotating rod; 1-3-6-10, Massage head; 1-3-6-11, Follow-up gear; 1-3-6-12, Traveling gear; 1-3-6-13, Elastic contact; 1-3-6-14, Transmission gear. Detailed Implementation

[0019] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0020] like Figures 1 to 10 As shown, an embodiment of this utility model provides a massage office chair, including a seat cushion 4, a backrest 1, and a massage mechanism 1-3-6. The backrest 1 includes a back frame 1-1 fixed to one end of the seat cushion 4, a rear support member 1-2 fixed to the inside of the back frame 1-1 or integrally formed with the back frame 1-1, and a front support member 1-4 connected to the side of the back frame 1-1 near the seat cushion 4. The chair also includes: A massage module 1-3 is provided between the front support member 1-4 and the rear support member 1-2; Massage modules 1-3 are made of flexible material; The massage module 1-3 includes a right flexible toothed bar 1-3-2 and a left flexible toothed bar 1-3-4. The right flexible toothed bar 1-3-2 and the left flexible toothed bar 1-3-4 can deform according to the curve of the human back to adapt to different human body differences. The massage mechanism 1-3-6 is movably connected to the massage module 1-3 so that it runs along the curve of the human back during the massage period, while the human back does not feel any foreign object during the non-massage period.

[0021] Specifically, the seat cushion 4 provides support for the back frame 1-1 that makes up the backrest 1. The back frame 1-1 can stably support the rear support 1-2 and the front support 1-4. The front support 1-4 can provide support for the human back. As a support for the human back, the front support 1-4 is made of flexible material. When the human back leans against it, it can adapt to the shape of the human body and deform appropriately, improving back comfort. The rear support 1-2 can deform with the massage module 1-3 and the front support 1-4 when the person leans against the backrest 1 for massage. At the same time, it can also provide appropriate support for the massage module 1-3.

[0022] In practical application, the user can sit on the seat cushion 4 and rest their back naturally against the backrest 1, so that the back frame 1-1 in the backrest 1 can support the front support 1-4 to contact the user's back, so that the front support 1-4 can provide support for the user's back. At this time, the massage mechanism 1-3-6 is in a non-massage state and is stored in the seat cushion 4 near the back frame 1-1.

[0023] As a preferred embodiment of the present utility model, the back frame 1-1 is the force-bearing frame of the chair back 1. The side of the back frame 1-1 near the seat cushion 4 is a curved structure that conforms to the back of the human body, and the middle part is hollow or protruding in a direction away from the seat cushion 4 to avoid interfering with the back support 1-2. The front support components 1-4 are made of flexible material to support the human back and adapt to the human body shape by deforming under force.

[0024] Specifically, the seat cushion 4 provides stable support for the back frame 1-1, enabling the back frame 1-1 to withstand the weight of the human body and form the main support force of the chair back 1. The space protruding from the back frame 1-1 away from the seat cushion 4 provides space for the rear support 1-2 and the massage module 1-3 to be set and moved, and also provides support. The front support 1-4 can deform under the pressure of the human back and conform to the user's back using its own curve. When the external force is removed, it will rebound and return to its original position.

[0025] Massage modules 1-3 include: The upper crossbeam 1-3-1 is fixed to the inner wall of the back frame 1-1 and is close to the upper end of the back frame 1-1; The lower crossbeam 1-3-7 is fixed to the inner wall of the frame, close to the other end of the back frame 1-1, and away from the seat cushion 4; The upper ends of the right flexible rack 1-3-2 and the left flexible rack 1-3-4 are connected to the upper crossbeam 1-3-1, and the lower ends are connected to the lower crossbeam 1-3-7. There is a gap between the right flexible rack 1-3-2 and the left flexible rack 1-3-4 to allow the massage mechanism 1-3-6 to move. The right conductive strip 1-3-3 and the left conductive strip 1-3-5 are connected at one end to the upper crossbeam 1-3-1 and at the other end to the lower crossbeam 1-3-7, and are respectively connected to the outer side of the right flexible rack 1-3-2 and the left flexible rack 1-3-4. The right flexible rack 1-3-2, the left flexible rack 1-3-4, the right conductive strip 1-3-3, and the left conductive strip 1-3-5 are flexible structural components that deform synchronously with the deformation of the front support 1-4.

[0026] Specifically, the back frame 1-1 can stably support the upper crossbeam 1-3-1 and the lower crossbeam 1-3-7. The upper crossbeam 1-3-1 and the lower crossbeam 1-3-7 can provide stable support for the right flexible rack 1-3-2 and the left flexible rack 1-3-4. The right flexible rack 1-3-2 can provide support for the right conductive strip 1-3-3, and the left flexible rack 1-3-4 can provide support for the left conductive strip 1-3-5. The right conductive strip 1-3-3 and the left conductive strip 1-3-5 can conduct current. Moreover, the right conductive strip 1-3-3, the left conductive strip 1-3-5, the right flexible rack 1-3-2, and the left flexible rack 1-3-4 are flexible structural components that can deform according to the downward pressure of the front support 1-4.

[0027] The rear support 1-2 is made of a flexible or elastic material so that it deforms together with the massage module 1-3 and the front support 1-4 and provides support to the massage module 1-3.

[0028] In practical application, when a user leans against the front support 1-4, causing it to deform, the front support 1-4 will simultaneously deform and use external force to contact the right conductive strip 1-3-3, left conductive strip 1-3-5, right flexible rack 1-3-2, and left flexible rack 1-3-4. Furthermore, under the support of the upper crossbeam 1-3-1 and lower crossbeam 1-3-7, the external force will push the right conductive strip 1-3-3, left conductive strip 1-3-5, right flexible rack 1-3-2, and left flexible rack 1-3-4 to deform together. The deformation allows the right conductive strip 1-3-3, left conductive strip 1-3-5, right flexible rack 1-3-2, and left flexible rack 1-3-4 to form a curved shape similar to the curve of the user's back. At the same time, the right flexible rack 1-3-2 and left flexible rack 1-3-4 can contact the rear support 1-2 and push the rear support 1-2 to deform together, so that the rear support 1-2 can use its elasticity to provide support for the left flexible rack 1-3-4 and right flexible rack 1-3-2, thereby making the backrest fit better.

[0029] In a preferred embodiment of this utility model, the right flexible toothed bar 1-3-2, the left flexible toothed bar 1-3-4, the right conductive bar 1-3-3, and the left conductive bar 1-3-5 have the same curved shape as the back frame 1-1. The adjacent surfaces of the right flexible toothed bar 1-3-2 and the left flexible toothed bar 1-3-4 have toothed shapes to engage with the massage mechanism 1-3-6, allowing the massage mechanism 1-3-6 to follow the toothed shapes up and down to cover the massage area to the entire back of the human body.

[0030] Specifically, the right flexible rack 1-3-2 and the left flexible rack 1-3-4 can use their tooth shape to cooperate with the traveling gear 1-3-6-12 to provide support, movement trajectory and guidance for the massage mechanism 1-3-6. The movement trajectory provided by the right flexible rack 1-3-2 and the left flexible rack 1-3-4 for the massage mechanism 1-3-6 is the curve of the human body, which can perform massage from the coccyx, waist, back, neck and even the head.

[0031] The side of the massage mechanism 1-3-6 near the right conductive strip 1-3-3 and the left conductive strip 1-3-5 is electrically connected to a flexible contact 1-3-6-13; The flexible contact 1-3-6-13 makes conductive contact with the right conductive strip 1-3-3 and the left conductive strip 1-3-5 to provide operating power to the massage mechanism 1-3-6.

[0032] Specifically, the massage mechanism 1-3-6 provides stable support for the elastic contact 1-3-6-13, which in turn conducts electricity to the dual-head motor 1-3-6-3.

[0033] The lower ends of the right flexible toothed bar 1-3-2 and the left flexible toothed bar 1-3-4 extend away from the seat cushion 4 and closer to the lower end of the back frame 1-1, so as to store the massage mechanism 1-3-6 between the seat cushion 4 and the back frame 1-1, avoiding the back area of ​​the human body, during non-massage periods.

[0034] In practical application, the lower ends of the right flexible rack 1-3-2 and the left flexible rack 1-3-4 extend to the rear of the seat cushion 4, allowing the massage mechanism 1-3-6 to be stored behind the seat cushion 4 during non-massage periods, thus avoiding the backrest area and improving comfort during non-massage periods. After the user sits on the seat cushion 4 and leans against the front support 1-4, the massage mechanism 1-3-6 can be activated through the conductive interaction between the right conductive strip 1-3-3 and the left conductive strip 1-3-5 and the elastic contact 1-3-6-13. This allows the massage mechanism 1-3-6 to utilize the interaction with the right flexible rack... The meshing action of the teeth of 1-3-2 and the left flexible rack 1-3-4 drives the elastic contact 1-3-6-13 to move at a constant speed along the right flexible rack 1-3-2 and the left flexible rack 1-3-4 from the position near the lower crossbeam 1-3-7 to the position near the upper crossbeam 1-3-1. At the same time, the elastic contact 1-3-6-13 will remain in contact with the right conductive strip 1-3-3 and the left conductive strip 1-3-5 during the movement to conduct electricity, so that the massage mechanism 1-3-6 can massage the body along the curve of the human body, from the tailbone, waist, back, neck and even the head.

[0035] In a preferred embodiment of this utility model, a left armrest 3 and a right armrest 2 are respectively connected to both sides of the back frame 1-1. A hand controller 5 is fixed to one side of the seat cushion 4. An electric control box 6 is fixed to the bottom of the seat cushion 4. The electric control box 6 is electrically connected to the hand controller 5, the right conductive strip 1-3-3 and the left conductive strip 1-3-5. A leg rest 8 is flipped and connected to the bottom of the seat cushion 4. A gas spring 9 is rotatably connected to the middle of the bottom of the seat cushion 4. A five-star foot 10 is connected to the end of the gas spring 9 away from the seat cushion 4. Multiple casters 11 are rotatably connected to the lower end of the five-star foot 10. A chassis 7 is installed on the outer side of the gas spring 9.

[0036] Specifically, the seat cushion 4 provides stable support for the hand controller 5 and the electrical control box 6. The hand controller 5 can control the power supply of the electrical control box 6 under the operation of the operator. The five-star base 10 provides rotational support for the casters 11 and can cooperate with the casters 11 to provide support for the gas spring 9. The gas spring 9 provides rotational support for the seat cushion 4, allowing the seat cushion 4 to rotate around the gas spring 9 as the center under the action of external force. The seat cushion 4 provides support for the leg rest 8. The leg rest 8 flips out from under the seat cushion 4 to facilitate the user's leg support. The back frame 1-1 provides stable support for the left armrest 3 and the right armrest 2. The left armrest 3 and the right armrest 2 provide support for the user's arms.

[0037] The electrical control box 6 is equipped with a battery to work with the right conductive strip 1-3-3 and the left conductive strip 1-3-5 to prevent the wires from being pulled during the massage period.

[0038] Specifically, the electrical control box 6 provides stable support and protection for the battery, and the hand controller 5 can control the battery to supply power to the right conductive strip 1-3-3 and the left conductive strip 1-3-5 under the operation of the operator, so that the massage mechanism 1-3-6 can obtain operating power and drive the massage mechanism 1-3-6 to perform massage work, so that the power cord will not be pulled during the massage period.

[0039] In practical application, the user can push the backrest 1 or seat cushion 4 as needed, so that external force can be transmitted to the gas spring 9. The gas spring 9 drives the five-star base 10, which in turn transmits the external force to the casters 11. The casters 11 can roll under the action of external force using friction with the ground. At the same time, depending on the direction of the applied external force, they rotate under the support of the five-star base 10, thus moving the office chair to a suitable position. The user can sit on the seat cushion 4 and use their legs, hips, and waist to rotate the seat cushion 4, so that the seat cushion 4 can rotate under the support of the gas spring 9. At the same time, the seat cushion 4 will drive the backrest 1 to rotate and adjust the angle. When the user needs to massage their back, they can operate the hand controller 5 to start the massage mechanism 1-3-6. The staff can operate the base 7 to control the extension and retraction of the gas spring 9 to adjust the height of the seat cushion 4 and the backrest 1.

[0040] In a preferred embodiment of this utility model, the massage mechanism 1-3-6 includes: a housing 1-3-6-1, disposed between the left and right flexible racks; a guide sleeve 1-3-6-2, symmetrically fixed on both sides of the housing 1-3-6-1, and sleeved on the outside of the left and right flexible racks, the left conductive strip 1-3-5, and the right conductive strip 1-3-3; a dual-head motor 1-3-6-3, fixed inside the housing 1-3-6-1, located in the center, and electrically connected to the elastic contact 1-3-6-13; and a worm gear 1-3. -6-4, fixed on both drive ends of the dual-head motor 1-3-6-3; turbine 1-3-6-5, rotatably mounted on the inner side of housing 1-3-6-1, symmetrically distributed, and meshing with worm 1-3-6-4; first gear 1-3-6-6, coaxially fixed on the side of turbine 1-3-6-5 near the front support 1-4; second gear 1-3-6-7, rotatably mounted on the inner side of housing 1-3-6-1, symmetrically distributed, and meshing with first gear 1-3-6-6; third gear 1-3-6-8, rotatably mounted on... The gears are symmetrically distributed and located inside the housing 1-3-6-1, meshing with the second gear 1-3-6-7; the rotating rod 1-3-6-9 is axially mounted through the third gear 1-3-6-8 and rotates through the side of the housing 1-3-6-1 near the front support member 1-4; the massage head 1-3-6-10 is fixed to one end of the rotating rod 1-3-6-9 and located on the housing 1-3-6-1 near the front support member 1-4; the transmission gear 1-3-6-14 is coaxially fixed to the third gear 1-3-6-8 away from the front support member. One side of component 1-4; follower gear 1-3-6-11, rotatably mounted inside housing 1-3-6-1, symmetrically distributed, and meshing with transmission gear 1-3-6-14; travel gear 1-3-6-12, coaxially fixed to the end face of follower gear 1-3-6-11, and movably passing through housing 1-3-6-1, located inside guide sleeve 1-3-6-2, meshing with flexible rack and left flexible rack 1-3-4; elastic contact 1-3-6-13 located between guide sleeve 1-3-6-2 and housing 1-3-6-1. Specifically, the housing 1-3-6-1 provides stable support for the guide sleeve 1-3-6-2, and provides a through channel and rotational support for the rotating rod 1-3-6-9. It also provides a through channel and rotational space for the traveling gear 1-3-6-12, and provides stable support for the dual-head motor 1-3-6-3. Furthermore, it provides rotational support for the turbine 1-3-6-5, the second gear 1-3-6-7, and the follower gear 1-3-6-11. The rotating rod 1-3-6-9 provides support for the second gear 1-3-6-7. -3-6-7 provides stable support for the transmission gear 1-3-6-14, the follower gear 1-3-6-11 provides stable support for the travel gear 1-3-6-12, the turbine 1-3-6-5 provides stable support for the first gear 1-3-6-6, and the guide sleeve 1-3-6-2 provides positioning and guiding for the housing 1-3-6-1, so that the housing 1-3-6-1 can move along the trajectory of the right flexible rack 1-3-2 and the left flexible rack 1-3-4 under the drive of the travel gear 1-3-6-12 and in cooperation with the guide sleeve 1-3-6-2.

[0041] In practical application, when the user operates the hand controller 5 to supply power to the right conductive bar 1-3-3 and the left conductive bar 1-3-5 by the battery, the current is transmitted to the dual-head motor 1-3-6-3 through the elastic contact 1-3-6-13, enabling the dual-head motor 1-3-6-3 to obtain operating power and start running. The dual-head motor 1-3-6-3 then drives the worm gear 1-3-6-4 to rotate via its drive end, and the worm gear 1-3-6-4 uses its rotational power to drive the turbine 1-3-6-5. Supported by housing 1-3-6-1, the turbine 1-3-6-5 rotates, simultaneously driving the first gear 1-3-6-6 to rotate as well. This allows the first gear 1-3-6-6 to use its rotational power and meshing action to drive the second gear 1-3-6-7 to rotate, also supported by housing 1-3-6-1. The second gear 1-3-6-7, in turn, uses its rotational power and meshing action to drive the third gear 1-3-6-8 to rotate. Simultaneously, the third gear 1-3-6-8 drives the rotating rod 1-3-6-9... Supported by the housing 1-3-6-1, the rotating rod 1-3-6-9 drives the massage head 1-3-6-10 and the transmission gear 1-3-6-14 to rotate together. This allows the massage head 1-3-6-10 to use its rotational power to massage the user's back through the front support 1-4. Simultaneously, the transmission gear 1-3-6-14, driven by the rotating rod 1-3-6-9, uses its rotational power and meshing action to push the follower gear 1-3-6-11 within the housing 1-3-6-1. Supported by 6-1, the follower gear 1-3-6-11 rotates, causing the travel gear 1-3-6-12 to rotate together. This allows the travel gear 1-3-6-12 to use its rotational power and the meshing action of its teeth with the right flexible rack 1-3-2 and the left flexible rack 1-3-4 to move along the right flexible rack 1-3-2 and the left flexible rack 1-3-4, thus providing a massage to the user's back along the trajectory of the right flexible rack 1-3-2 and the left flexible rack 1-3-4.

[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A massage office chair, comprising a seat cushion, a backrest, and a massage mechanism, wherein the backrest includes a back frame fixed to one end of the seat cushion, a rear support member fixed to the inner side of the back frame or integrally formed with the back frame, and a front support member connected to the side of the back frame near the seat cushion, characterized in that... Also includes: A massage module is provided between the front support member and the rear support member; The massage module is made of flexible material; The massage module includes a right flexible toothed bar and a left flexible toothed bar, which can deform according to the curve of the human back to adapt to different human body differences; The massage mechanism is movably connected to the massage module so that it runs along the curve of the human back during the massage period, while the human back does not feel any foreign object during the non-massage period.

2. The massage office chair according to claim 1, characterized in that, The back frame is the load-bearing frame of the chair back. The side of the back frame near the seat cushion is a curved structure that conforms to the human back, and the middle part is hollow or protruding away from the seat cushion to avoid interfering with the rear support. The front support is made of a flexible material to support the human back and adapt to the human body shape under stress.

3. The massage office chair according to claim 2, characterized in that, The massage module includes: The upper crossbeam is fixed to the inner wall of the back frame and is close to the upper end of the back frame; The lower crossbeam is fixed to the inner wall of the frame, near the other end of the back frame, and away from the seat cushion; The upper ends of the right flexible rack and the left flexible rack are connected to the upper crossbeam, and the lower ends are connected to the lower crossbeam. There is a gap between the right flexible rack and the left flexible rack to allow the massage mechanism to move. The right and left conductive strips are connected at one end to the upper crossbeam and at the other end to the lower crossbeam, and are respectively connected to the outer side of the right flexible rack and the left flexible rack. The right flexible rack, left flexible rack, right conductive strip, and left conductive strip are flexible structural components that deform synchronously with the deformation of the front support component.

4. The massage office chair according to claim 3, characterized in that, The rear support is made of a flexible or elastic material so that it deforms along with the massage module and the front support and provides support to the massage module.

5. The massage office chair according to claim 3, characterized in that, The right flexible toothed rack, left flexible toothed rack, right conductive strip and left conductive strip have the same curved shape as the back frame. The adjacent surfaces of the right flexible toothed rack and left flexible toothed rack have tooth shape to engage with the massage mechanism, so that the massage mechanism can follow the tooth shape to move up and down to cover the massage area to the entire back of the human body.

6. The massage office chair according to claim 3, characterized in that, The side of the massage mechanism near the right and left conductive strips is electrically connected to an elastic contact. The elastic contact makes conductive contact with the right and left conductive strips to provide operating power to the massage mechanism.

7. The massage office chair according to claim 6, characterized in that, The back frame is connected to a left armrest and a right armrest on both sides respectively. A hand controller is fixed to one side of the seat cushion. An electrical control box is fixed to the bottom of the seat cushion and is electrically connected to the hand controller, the right conductive strip and the left conductive strip. A leg rest is connected to the bottom of the seat cushion by flipping it over. A gas spring is rotatably connected to the middle of the bottom of the seat cushion. A five-star foot is connected to the end of the gas spring away from the seat cushion. Multiple casters are rotatably connected to the lower end of the five-star foot.

8. The massage office chair according to claim 1, characterized in that, The lower ends of the right and left flexible toothed racks extend away from the seat cushion and closer to the lower end of the back frame, so as to store the massage mechanism between the seat cushion and the back frame, avoiding the back area of ​​the human body, during non-massage periods.

9. The massage office chair according to claim 7, characterized in that, The electrical control box is equipped with a battery to work with the right and left conductive strips to prevent the wires from being pulled during the massage period.

10. The massage office chair according to claim 5, characterized in that, The massage mechanism includes: The housing is positioned between the left and right flexible racks; guide sleeves are symmetrically fixed on both sides of the housing and fit over the outer sides of the left and right flexible racks, the left conductive strip, and the right conductive strip; a dual-head motor is fixed inside the housing, located in the center, and electrically connected to the elastic contacts; a worm gear is fixed to the two drive ends of the dual-head motor; a turbine is rotatably mounted inside the housing, symmetrically distributed, and meshes with the worm gear; a first gear is coaxially fixed on the turbine near the front support; a second gear is rotatably mounted inside the housing, symmetrically distributed, and meshes with the first gear; a third gear is rotatably mounted on... The inner side of the housing is symmetrically distributed and meshes with the second gear; the rotating rod is axially arranged through the third gear and rotatably passes through the housing near the front support; the massage head is fixed to one end of the rotating rod and located in the housing near the front support; the transmission gear is coaxially fixed to the side of the third gear away from the front support; the follower gear is rotatably arranged inside the housing, symmetrically distributed, and meshes with the transmission gear; the travel gear is coaxially fixed to the end face of the follower gear, movably passes through the housing, and is located inside the guide sleeve, meshing with the flexible rack and the left flexible rack; the elastic contact is located between the guide sleeve and the housing.

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