Massage sofa chair

Abstract

The utility model relates to a massage sofa chair, including massage sofa chair main part, massage sofa chair main part includes integrative support base and backrest of the material is polyurethane or sponge, the side of backrest relative support base is equipped with the accommodation groove, the accommodation groove includes the massage head accommodation cavity formed to the support base inside extension, is equipped with the massage movement core in the accommodation groove, the massage movement core includes the movement core base, is equipped with the rack on the movement core base, the rack is cooperated with the walking movement core along the rack reciprocating motion, the walking movement core removes the lower end of rack and is contained in the massage head accommodation cavity, is fixedly connected with the back support frame on the movement core base, is equipped with the massage head give up the slot of the massage head walking on the back support frame, the utility model discloses integrative support base and backrest of the material is polyurethane or sponge, the structure stable while significantly reduced production cost. The walking movement core of massage movement core can be contained in the massage head accommodation cavity when non - working state, satisfies the demand of consumer under a variety of use scene.

Description

Technical Field

[0001] This utility model relates to the field of massager technology, and in particular to a massage sofa chair. Background Technology

[0002] Existing massage sofas typically use wooden or metal frames as the main body, covered with elastomers such as sponge. While this provides high structural strength, it also significantly increases costs. Furthermore, the massage heads in existing massage sofas cannot be hidden, and even when not in use, the pressure from the massage heads can still be clearly felt, creating a noticeable foreign body sensation. When not in use, massage sofas cannot function well as ordinary sofas, resulting in limited functionality and failing to meet the diverse usage needs of consumers.

[0003] On the other hand, for the massage mechanism on the backrest of a massage sofa chair to exert an effective massage effect, the user's back usually needs to apply a certain amount of pressure to the backrest. Existing massage sofa chair backrests typically include two types: adjustable and non-adjustable. Adjustable backrests can automatically apply a certain amount of pressure when the user leans back, thus ensuring a massage effect. Non-adjustable backrests, on the other hand, usually require the user to actively apply a certain amount of pressure for a better massage effect. Another method for non-adjustable backrests is to generate sufficient massage pressure by tilting the entire massage sofa chair backward. Regardless of whether it is an adjustable backrest or a method that rotates the entire massage sofa chair, an additional motor is required for driving, which increases costs. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a massage sofa chair.

[0005] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0006] A massage sofa chair, characterized in that: it includes a massage sofa chair body; the massage sofa chair body includes an integrally formed support base and a backrest; the backrest has a receiving groove on one side opposite to the support base; the receiving groove includes a massage head receiving cavity extending into the support base; a massage mechanism is provided in the receiving groove; the massage mechanism includes a mechanism base; a rack is provided on the mechanism base; a traveling mechanism that reciprocates along the rack is engaged with the rack; a massage head is drivenly connected to the traveling mechanism; when the traveling mechanism moves to the lower end of the rack, it is received in the massage head receiving cavity; a back support frame is fixedly connected to the mechanism base; the back support frame has a massage head clearance groove for the massage head to travel in; the massage sofa chair body is made of integrally formed polystyrene or sponge.

[0007] In one embodiment of this utility model, the thickness of the backrest is 10-30cm; the back support frame includes a support part and a support column for fixed connection with the mechanism base; the support part is spaced apart from the mechanism base through the support column; the support part is provided with two spaced massage head clearance grooves.

[0008] In one embodiment of the present invention, the top of the support base is formed with an inclined surface; the distance between the proximal end of the inclined surface near the backrest and the bottom of the support base is less than the distance between the distal end of the inclined surface away from the backrest and the bottom of the support base.

[0009] In one embodiment of this utility model, the top of the support base is provided with a spring-loaded layer.

[0010] In one embodiment of this utility model, the rebound layer is a memory foam layer or a composite layer of a recycled cotton layer and a memory foam layer; the recycled cotton layer in the composite layer is disposed between the memory foam layer and the support base.

[0011] In one embodiment of this utility model, the gear of the walking mechanism exposed in the housing meshes with the rack; the base of the mechanism is provided with a conductive strip parallel to the rack; the walking mechanism is electrically connected to the conductive strip through a conductive spring pin; the conductive spring pin always maintains a tendency to abut against the conductive strip under the action of spring force.

[0012] In one embodiment of this utility model, two racks are arranged in parallel at intervals; the racks are arranged on both sides of the movement base with the teeth facing outwards.

[0013] In one embodiment of this utility model, the walking mechanism includes a housing and a motor disposed within the housing; each of the output worm gears at both ends of the motor is fitted with a set of transmission components; the transmission components include a worm wheel that engages with the output worm gear; a spur gear coaxially disposed on the worm wheel meshes with a massage gear; a first transmission gear is coaxially connected to the massage gear; the first transmission gear meshes with the output gear; a second transmission gear is coaxially connected to the output gear; the second transmission gear partially extends out of the housing and meshes with the rack; the massage gear is provided with a drive shaft extending out of the housing; a massage head is anti-rotatingly connected to the drive shaft; the housing includes a fixedly connected upper cover and lower cover of the mechanism.

[0014] In one embodiment of this utility model, the pitch circle diameter of the worm gear is larger than that of the spur gear; the pitch circle diameter of the massage gear is larger than that of the first transmission gear; and the pitch circle diameter of the output gear is larger than that of the second transmission gear.

[0015] In one embodiment of this utility model, the lower cover of the movement is provided with a relief groove that cooperates with the second transmission gear; the second transmission gear extends out of the lower cover of the movement through the relief groove and meshes with the rack.

[0016] The beneficial effects of this utility model are: by adopting a one-piece molded massage sofa chair body made of polystyrene or sponge, compared with the traditional wooden or metal frame structure, this utility model significantly reduces the production cost while ensuring structural stability, and the material is lightweight, making it easy to transport and install.

[0017] When not in use, the massage mechanism's walking mechanism can be housed within the massage head's housing, effectively preventing continuous pressure from the massage head on the user's back and eliminating any foreign body sensation. This allows the massage sofa chair to perfectly function as a regular sofa chair when not in use, meeting consumers' needs in various usage scenarios.

[0018] The sloping design of the top of the support base allows the user to automatically tilt backward when seated. This eliminates the need for an additional drive motor to adjust the backrest angle or tilt the chair, ensuring sufficient massage pressure on the user's back against the back support frame. This simplifies the structure, reduces costs, and ensures excellent massage results. When the user sits on the support base, the legs are raised, causing the body to naturally tilt backward, with the back closely fitting the back support frame. Sufficient massage pressure is provided to the massage heads without the user's active effort, ensuring a good massage effect. Due to the sloping design, even with a near-vertical backrest angle, the user's body folds inward at a certain angle, naturally applying greater pressure to the backrest, ensuring a good massage effect. The sloping design allows the user to automatically tilt backward when seated on the support base, or generates additional pressure on the back support frame due to body folding, thus ensuring the user maintains a correct sitting posture and guarantees a good massage effect.

[0019] The back support frame is spaced between the support column and the base of the mechanism, and the support part directly supports the user's back, which enhances the stability and comfort of the support. Together with the massage head relief groove, it ensures the normal movement and massage action of the massage head.

[0020] The walking mechanism employs a rack and pinion drive, with a stable electrical connection between conductive pins and conductive strips, ensuring smooth movement and reliable power supply. The pitch circle diameter design of each gear in the transmission assembly achieves reasonable speed reduction and torque increase, allowing the massage heads to receive appropriate massage intensity while ensuring smooth movement of the walking mechanism. The inclusion of a rebound layer, particularly a memory foam layer or a composite layer of recycled and memory foam, further enhances seating comfort and resilience, providing users with a superior experience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural view of the present invention;

[0023] Figure 2 This is a side view of the structure of this utility model;

[0024] Figure 3 This is an exploded view of the main body of the massage sofa chair of this utility model;

[0025] Figure 4 This is an exploded view of the massage mechanism of this utility model;

[0026] Figure 5 yes Figure 4 Enlarged view of section A in the middle;

[0027] Figure 6 yes Figure 4 Enlarged view of section B in the middle.

[0028] Explanation of reference numerals in the attached drawings: 10. Massage sofa chair body; 11. Support base; 12. Backrest; 13. Receiving groove; 131. Massage head receiving cavity; 14. Sloping surface; 141. Proximal end; 142. Distal end; 15. Rebound layer; 16. Memory foam layer; 17. Recycled cotton layer; 20. Massage mechanism; 21. Mechanism base; 22. Rack; 23. Walking mechanism; 231. Shell; 2311. Mechanism upper cover; 2312. Mechanism lower cover; 2313. 232. Relief groove; 233. Motor; 234. Output worm gear; 235. Transmission assembly; 2341. Worm wheel; 2342. Spur gear; 2343. Massage gear; 2344. First transmission gear; 2345. Output gear; 2346. Second transmission gear; 235. Drive shaft; 24. Massage head; 25. Back support frame; 251. Support part; 252. Support column; 253. Massage head relief groove; 26. Conductive strip; 27. Conductive spring pin. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example, refer to Figures 1 to 6This embodiment provides a massage sofa chair, including a massage sofa chair body 10. In one embodiment, the massage sofa chair body 10 is made of polystyrene foam through a one-piece molding process. Compared with traditional wood and metal, polystyrene foam significantly reduces raw material costs and eliminates the need for complex frame splicing processes. The main structure can be completed in one piece, greatly simplifying the production process and reducing labor costs. Simultaneously, polystyrene foam possesses excellent structural stability and cushioning performance. Its compressive strength meets the support requirements of human body weight during daily use, without compromising structural reliability due to its lightweight nature. It also reduces the overall weight of the massage sofa chair, facilitating handling, installation, and movement, perfectly balancing cost control and structural stability. In other embodiments, the massage sofa chair body 10 can also be made of sponge foam through a one-piece molding process. Sponge foam offers higher softness and a more comfortable seating experience. Different materials can be selected according to different consumer needs, further adapting to diverse usage scenarios. However, the cost of using sponge foam through one-piece molding is higher than that of polystyrene foam through one-piece molding.

[0033] In one embodiment of this utility model, the massage sofa chair body 10 includes an integrally formed support base 11 and backrest 12; the support base 11 is used to support the user's buttocks and legs, and the backrest 12 is used to support the user's back; in one embodiment, the support base 11 is a solid block structure to increase structural strength, and the bottom of the support base 11 is set as a complete plane to increase the contact area with the ground, so that the bottom of the support base 11 is evenly stressed and avoids damage caused by excessive local pressure; the integrally formed structural design does not require additional assembly, which not only simplifies the production process and further reduces production costs, but also improves the integrity and stability of the overall structure, avoids the loosening and abnormal noise problems that are prone to occur in traditional assembled sofa chairs, and indirectly solves the hidden problem of high maintenance costs of traditional sofa chairs.

[0034] In one embodiment of this utility model, a receiving groove 13 is provided on the side of the backrest 12 opposite to the support base 11 (i.e., the inner side of the backrest 12); the receiving groove 13 includes a massage head receiving cavity 131 extending into the support base 11; the receiving groove 13 is generally elongated and adapted to the contour of the user's back, used to accommodate the massage mechanism 20 and related components, avoiding the foreign body sensation caused by exposed components; the massage head receiving cavity 131 is located at the lower end of the receiving groove 13 and communicates with the receiving groove 13, and its size is precisely matched with the size of the walking mechanism 23. When the massage sofa chair is not in working state, the walking mechanism 23 can drive the massage head 24 to move into the massage head receiving cavity 131 at the lower end of the receiving groove 13, so that the massage head 24 is completely hidden and no longer contacts the user's back or produces pressure, completely eliminating the foreign body sensation, so that the massage sofa chair can perfectly serve as an ordinary sofa chair when not in working state, meeting the needs of consumers for various usage scenarios such as rest, seated office, and leisure, and solving the drawback of the single function of traditional massage sofa chairs.

[0035] In one embodiment of this utility model, a massage mechanism 20 is provided in the receiving groove 13; the massage mechanism 20 includes a mechanism base 21; a rack 22 is provided on the mechanism base 21; a walking mechanism 23 that reciprocates along the rack 22 is fitted on the rack 22; a massage head 24 is connected to the walking mechanism 23; when the walking mechanism 23 moves to the lower end of the rack 22, it is housed in the massage head receiving cavity 131 to avoid pressing the user's back when not in use; in this embodiment, two racks 22 are arranged parallel and spaced apart, respectively fixed on the left and right sides of the mechanism base 21, and the teeth of the racks 22 are set outwards. The two racks 22 cooperate synchronously, which can improve the stability of the movement of the walking mechanism 23, avoid deviation, jamming, etc., ensure smooth movement of the massage head 24, and further improve the massage effect. The massage head 24 is made of soft silicone, which reduces the pressure on the user's back during massage and improves massage comfort. The walking mechanism 23 engages with the rack 22 via gears and can move up and down along the rack 22. When it moves to the lower end of the rack 22, the massage head 24 is housed in the massage head receiving cavity 131 along with the walking mechanism 23, thus hiding the massage head 24. When a massage is needed, the walking mechanism 23 moves upward along the rack 22, causing the massage head 24 to extend out of the massage head receiving cavity 131 to massage the user's back, realizing flexible switching between the "massage" and "ordinary sofa" modes.

[0036] In one embodiment of this utility model, a back support frame 25 is fixedly connected to the base 21 of the mechanism. The back support frame 25 is made of plastic, which is lightweight and has a certain structural strength. It can provide stable support for the user's back without increasing the overall weight and cost. The back support frame 25 is provided with a massage head clearance groove 253 for the massage head 24 to move. The length of the massage head clearance groove 253 is adapted to the length of the rack 22, and the width is slightly larger than the diameter of the massage head 24. The massage head clearance groove 253 provides clearance space for the movement of the massage head 24, ensuring that when the walking mechanism 23 drives the massage head 24 to move back and forth, the massage head 24 can smoothly pass through the massage head clearance groove 253, contact the user's back and perform a massage action. At the same time, it avoids the back support frame 25 from interfering with the movement of the massage head 24, ensuring the smoothness of the massage action. At the same time, the back support frame 25 can distribute the pressure on the user's back, avoiding excessive local pressure caused by the direct pressing of the massage head 24, and improving the comfort of use.

[0037] In one embodiment of this utility model, the thickness of the backrest 12 is 10-30cm. In this embodiment, the thickness of the backrest 12 is preferably 20cm (in other embodiments, it can be set to 10cm or 30cm according to actual needs, or it can be set to a non-fixed thickness, as long as the thickness at each place is controlled within 10-30cm). This ensures that there is enough space to accommodate the receiving slot 13 and the massage mechanism 20, while also ensuring the softness and support of the backrest 12, avoiding insufficient support due to the backrest being too thin, or excessive size and space occupation due to the backrest being too thick. The back support frame 25 includes a support part 251 and a support column 252 for fixed connection with the mechanism base 21; the support part 251 is spaced apart from the mechanism base 21 through the support column 252, so as to directly support the user's back through the support part 251; the support part 251 is provided with two spaced massage head clearance slots 253. The support column 252 creates a gap between the support part 251 and the mechanism base 21, preventing the mechanism base 21 from directly supporting the support part 251. This reduces vibration transmission and improves support stability. Simultaneously, the support part 251 directly supports the user's back, enhancing stability and comfort. Two spaced massage head recesses 253 match the number of massage heads 24, ensuring the massage heads 24 can smoothly move along the support part 251 and perform massage.

[0038] In one embodiment of this invention, the top of the support base 11 forms an inclined surface 14. The distance between the proximal end 141 of the inclined surface 14 near the backrest 12 and the bottom of the support base 11 is less than the distance between the distal end 142 of the inclined surface 14 away from the backrest 12 and the bottom of the support base 11. This allows the user to automatically lean backward when sitting on the support base 11, ensuring correct posture and sufficient pressure on the back support frame 25. In this embodiment, the inclination angle of the inclined surface 14 is carefully designed, with the angle between the inclined surface 14 and the horizontal plane being β, where 10°≤β≤25°. In one embodiment, β=15°.

[0039] When the user sits on the support base 11, the body naturally tilts backward as the legs are raised, and the back fits tightly against the back support frame 25. Sufficient massage pressure can be provided to the massage head 24 without the user having to exert any force, ensuring the massage effect. Due to the inclined surface 14, when the user sits on the support base 11, the legs are raised, and even if the angle of the backrest 12 is close to vertical, the user's body can naturally apply greater pressure to the backrest 12 after folding inward at a certain angle, ensuring the massage effect.

[0040] Understandably, when the top of the support base 11 adopts a traditional horizontal structure, the pressure of the user's back against the backrest 12 changes depending on the tilt angle of the backrest 12. The greater the tilt angle of the backrest 12, the greater the pressure acting on the back support frame 25. However, considering the normal usage scenarios, the backrest 12 of a massage sofa chair with a non-adjustable backrest only allows for a small tilt angle. Considering the user's sitting habits, there may be a situation where the pressure of the user's back acting on the back support frame 25 is relatively small, resulting in a poor massage effect. By adopting the inclined surface 14 structure of this utility model, the user's legs are raised under the action of the inclined surface 14, so that the legs can generate a component force acting on the back support frame 25 under the action of gravity, thereby increasing the pressure of the user acting on the back support frame 25. Secondly, under the action of the inclined surface 14, the user will also tend to slide towards the backrest 12. The user's stable posture is effectively limited to the posture of the back pressed against the backrest 12, thereby realizing the function of correcting the user's sitting posture.

[0041] When the preferred backrest 12 is tilted back at a certain angle, greater pressure can be applied to the back support frame 25. This design simplifies the overall structure, eliminates the need for additional drive motors and related transmission components, significantly reducing production costs, while ensuring that the massage mechanism 20 can exert a good massage effect. It avoids the drawback of traditional non-adjustable backrests that require the user to actively apply force to ensure the massage effect. At the same time, it can also guide the user to maintain a correct sitting posture, improving the comfort and practicality of use.

[0042] In one embodiment of this utility model, a rebound layer 15 is provided on the top of the support base 11. The rebound layer 15 is a composite layer of memory foam layer 16 or recycled cotton layer 17 and memory foam layer 16; the recycled cotton layer 17 in the composite layer is disposed between the memory foam layer 16 and the support base 11. In this embodiment, the rebound layer 15 adopts a composite layer structure of recycled cotton layer 17 and memory foam layer 16. The recycled cotton layer 17 has good support and resilience, which can enhance the overall strength of the rebound layer 15, while the memory foam layer 16 has slow rebound characteristics, which can shape according to the user's body contour, provide personalized support, and effectively relieve fatigue caused by prolonged sitting. In other embodiments, the rebound layer 15 can also be made of memory foam layer 16 alone, which can further improve the sitting comfort and meet the needs of different consumer levels.

[0043] In one embodiment of this utility model, the gear of the walking mechanism 23 exposed in the housing 231 meshes with the rack 22, enabling the walking mechanism 23 to reciprocate along the rack 22. A conductive strip 26 parallel to the rack 22 is provided on the mechanism base 21. The conductive strip 26 is made of copper and has good conductivity. The walking mechanism 23 is electrically connected to the conductive strip 26 via a conductive spring pin 27. Under the action of the spring force, the conductive spring pin 27 always maintains a tendency to contact the conductive strip 26. The cooperation between the conductive spring pin 27 and the conductive strip 26 replaces the traditional wire connection method. The spring force ensures that the conductive spring pin 27 is always in close contact with the conductive strip 26, guaranteeing the stability of the power supply even during the reciprocating movement of the walking mechanism 23. This prevents power outages, poor contact, and other issues, ensuring the normal operation of the walking mechanism 23 and the massage head 24. It also avoids problems such as wire tangling and wear, improving the reliability of the power supply and the service life of the equipment, further reducing the maintenance cost of the equipment. Two racks 22 are arranged in parallel at intervals; the racks 22 are located on both sides of the movement base 21 with their teeth facing outwards. The arrangement of the two racks 22 makes the movement of the walking movement 23 more stable and avoids shaking during the movement.

[0044] In one embodiment of this utility model, the walking mechanism 23 includes a housing 231 and a motor 232 disposed inside the housing 231. The housing 231 includes an upper cover 2311 and a lower cover 2312 of the mechanism, which are fixedly connected by bolts, to facilitate the disassembly and maintenance of the components inside the housing. Each of the output worm gears 233 at both ends of the motor 232 is equipped with a set of transmission components 234. The two sets of transmission components 234 are symmetrically arranged and correspond to two racks 22 respectively, to ensure the synchronous movement of both sides of the walking mechanism 23 and avoid unilateral deviation.

[0045] In one embodiment of this utility model, the transmission assembly 234 includes a worm gear 2341 that cooperates with the output worm 233. A spur gear 2342 coaxially disposed on the worm gear 2341 meshes with a massage gear 2343. A first transmission gear 2344 is coaxially connected to the massage gear 2343. The first transmission gear 2344 meshes with an output gear 2345. A second transmission gear 2346 is coaxially connected to the output gear 2345. The second transmission gear 2346 extends out of the housing 231 and meshes with the rack 22. The massage gear 2343 is provided with a drive shaft 235 extending out of the housing 231. A massage head 24 is anti-rotatingly connected to the drive shaft 235. The anti-rotation connection adopts a key connection to ensure that the drive shaft 235 can drive the massage head 24 to rotate synchronously and realize the massage action. Its transmission principle is as follows: the motor 232 outputs power, driving the output worm 233 to rotate. The output worm 233 meshes with the worm wheel 2341, transmitting power to the worm wheel 2341. The worm wheel 2341 drives the coaxial spur gear 2342 to rotate, which in turn drives the massage gear 2343 to rotate. The massage gear 2343 simultaneously performs two actions: first, it drives the drive shaft 235 and the massage head 24 to rotate, completing the massage action; second, it drives the coaxial first transmission gear 2344 to rotate, which in turn drives the output gear 2345 to rotate. The output gear 2345 drives the second transmission gear 2346 to rotate, which meshes with the rack 22, thereby driving the entire walking mechanism 23 to move back and forth along the rack 22, realizing the moving massage of the massage head 24, ensuring that the massage range covers the entire back, and improving the massage effect.

[0046] In one embodiment of this utility model, the pitch circle diameter of the worm gear 2341 is larger than that of the spur gear 2342, the pitch circle diameter of the massage gear 2343 is larger than that of the first transmission gear 2344, and the pitch circle diameter of the output gear 2345 is larger than that of the second transmission gear 2346. Its speed reduction and torque increase principle is as follows: Through the difference in the pitch circle diameter of the multi-stage gears, multi-stage speed reduction and torque increase are achieved. The high speed and low torque output by the motor 232 are reduced to a suitable range (50-80 r / min) after passing through three stages of speed reduction: worm gear 2341 and spur gear 2342, massage gear 2343 and first transmission gear 2344, and output gear 2345 and second transmission gear 2346. The torque is increased by 3-5 times. This ensures that the massage head 24 can obtain a suitable massage force (avoiding excessive force that may damage the user's back or insufficient force that may affect the massage effect), and also ensures the smoothness of the movement of the walking mechanism 23 along the rack 22, avoiding jamming, insufficient power, etc., and ensuring a stable and comfortable massage process.

[0047] In one embodiment of this utility model, the lower cover 2312 of the movement is provided with a relief groove 2313 that cooperates with the second transmission gear 2346. The second transmission gear 2346 extends out of the lower cover 2312 of the movement through the relief groove 2313 and meshes with the rack 22. The size of the relief groove 2313 is adapted to the size of the second transmission gear 2346. The relief groove 2313 provides space for the second transmission gear 2346 to extend out of the housing 231, ensuring that the second transmission gear 2346 can smoothly mesh with the rack 22.

[0048] The working process and problem-solving linkage principle of the massage sofa chair in this embodiment are as follows: When a massage is needed, the motor 232 inside the walking mechanism 23 is activated. The motor 232 drives the output worm gears 233 at both ends to rotate. The output worm gears 233 drive the meshing worm wheel 2341 to rotate. The worm wheel 2341 drives the coaxial spur gear 2342 to rotate. The spur gear 2342 drives the meshing massage gear 2343 to rotate. The massage gear 2343 drives the drive shaft 235 and the massage head 24 to rotate, realizing the massage action. On the other hand, it drives the coaxial first transmission gear 2344 to rotate. The first transmission gear 2344 drives the meshing output gear 2345 to rotate. The output gear 2345 drives the coaxial second transmission gear 2346 to rotate. The second transmission gear 2346 meshes with the rack 22, thereby driving the entire walking mechanism 23 to move back and forth along the rack 22, pressing... The massage head 24 passes through the massage head recess 253 of the back support frame 25 to provide a comprehensive massage to the user's back. During this process, the user sits on the inclined surface 14 of the support base 11 and automatically leans back under the action of gravity. The back exerts sufficient pressure on the back support frame 25 to ensure the massage effect, solving the cost problem of traditional massage sofa chairs requiring an additional motor drive. When the massage ends, the motor 232 reverses, driving the walking mechanism 23 to move to the lower end of the rack 22. At this time, the massage head 24 is housed in the massage head receiving cavity 131 along with the walking mechanism 23. The massage sofa chair switches to a non-working state, without any foreign object sensation, and can be used as a regular sofa chair, solving the problem of limited functionality. At the same time, the main body 10 of the massage sofa chair is made of polystyrene / sponge in one piece, which significantly reduces production costs compared to traditional wood / metal frames, and is lightweight and easy to transport and install.

[0049] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A massage sofa chair, characterized in that: Includes a massage sofa chair body (10); the massage sofa chair body (10) includes an integrally formed support base (11) and a backrest (12); the backrest (12) has a receiving groove (13) on one side opposite to the support base (11); the receiving groove (13) includes a massage head receiving cavity (131) extending into the support base (11); a massage mechanism (20) is provided in the receiving groove (13); the massage mechanism (20) includes a mechanism base (21); a rack (22) is provided on the mechanism base (21); the rack ( 22) is fitted with a walking mechanism (23) that reciprocates along the rack (22); a massage head (24) is connected to the walking mechanism (23); when the walking mechanism (23) moves to the lower end of the rack (22), it is housed in the massage head receiving cavity (131); a back support frame (25) is fixedly connected to the base (21) of the mechanism; the back support frame (25) is provided with a massage head clearance groove (253) for the massage head (24) to move; the main body (10) of the massage sofa chair is made of one-piece molded polystyrene or sponge.

2. A massage sofa chair according to claim 1, characterized in that: The thickness of the backrest (12) is 10-30cm; the back support frame (25) includes a support part (251) and a support column (252) for fixed connection with the mechanism base (21); the support part (251) is spaced apart from the mechanism base (21) through the support column (252); the support part (251) is provided with two spaced massage head relief grooves (253).

3. A massage sofa chair according to claim 1, characterized in that: The top of the support base (11) forms a slope (14); the distance between the proximal end (141) of the slope (14) near the backrest (12) and the bottom of the support base (11) is less than the distance between the distal end (142) of the slope (14) away from the backrest (12) and the bottom of the support base (11).

4. A massage sofa chair according to claim 1, characterized in that: The top of the support base (11) is provided with a spring layer (15).

5. A massage sofa chair according to claim 4, characterized in that: The rebound layer (15) is a composite layer of memory foam layer (16) or recycled cotton layer (17) and memory foam layer (16); the recycled cotton layer (17) in the composite layer is disposed between memory foam layer (16) and support base (11).

6. A massage sofa chair according to claim 1, characterized in that: The gear of the walking mechanism (23) exposed in the housing (231) meshes with the rack (22); the base (21) of the mechanism is provided with a conductive strip (26) parallel to the rack (22); the walking mechanism (23) is electrically connected to the conductive strip (26) through a conductive spring pin (27); the conductive spring pin (27) always maintains the tendency to abut against the conductive strip (26) under the action of spring force.

7. A massage sofa chair according to claim 6, characterized in that: Two racks (22) are arranged in parallel at intervals; the racks (22) are arranged on both sides of the movement base (21) with the teeth facing outwards.

8. A massage sofa chair according to claim 6, characterized in that: The walking mechanism (23) includes a housing (231) and a motor (232) disposed within the housing (231); a transmission assembly (234) is fitted on each of the output worm gears (233) at both ends of the motor (232); the transmission assembly (234) includes a worm wheel (2341) that meshes with the output worm gear (233); a spur gear (2342) coaxially disposed on the worm wheel (2341) meshes with a massage gear (2343); a first transmission gear (2344) is coaxially connected to the massage gear (2343); the first The transmission gear (2344) meshes with the output gear (2345); a second transmission gear (2346) is coaxially connected to the output gear (2345); the second transmission gear (2346) extends out of the housing (231) and meshes with the rack (22); the massage gear (2343) is provided with a drive shaft (235) extending out of the housing (231); a massage head (24) is anti-rotatingly connected to the drive shaft (235); the housing (231) includes a fixedly connected upper cover (2311) and lower cover (2312) of the mechanism.

9. A massage sofa chair according to claim 8, characterized in that: The pitch circle diameter of the worm gear (2341) is greater than that of the spur gear (2342); the pitch circle diameter of the massage gear (2343) is greater than that of the first transmission gear (2344); and the pitch circle diameter of the output gear (2345) is greater than that of the second transmission gear (2346).

10. A massage sofa chair according to claim 8 or 9, characterized in that: The lower cover (2312) of the movement is provided with a relief groove (2313) that cooperates with the second transmission gear (2346); the second transmission gear (2346) extends out of the lower cover (2312) through the relief groove (2313) and meshes with the rack (22).

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