Massage chair

Abstract

The present application relates to massage chair technical field, especially relates to a massage chair's waist massage structure optimization, including chair seat, the backrest of being established in the back of chair seat, the kneading massage machine core of being established in the backrest corresponding human waist position, the kneading massage machine core contains casing assembly, the drive assembly of being placed in the casing assembly, and the massage head of being established above the casing assembly, the drive assembly includes transmission shaft, the end of transmission shaft is articulated with the connecting rod of driving massage head, the both ends of connecting rod respectively enter two massage head inside and fix it and drive massage head movement, the both sides of connecting rod articulated part are fixedly connected with the pressing drive rod which is away from human waist; The abutting ring that limits pressing drive rod free end movement is fixedly arranged in casing assembly, a plurality of groups of first coupling structure are arranged on the surface opposite to pressing drive rod of abutting ring, first coupling structure includes a boss and a recess, the boss and the recess are symmetrically arranged on the surface of abutting ring along the drive shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of massage chairs, in particular to a waist massage structure optimization of a massage chair. BACKGROUND

[0002] The waist massage chair can rub, massage and so on to the waist muscle, help to relax the waist muscle, for the modern life, many people because of long time sitting work or long time sitting, lead to the waist muscle long time in the nervous state is very useful, the waist massage chair relies on the massage movement, can rub the muscle tension, massage promotes blood circulation, deeply relaxes the waist muscle group, effectively relieves the waist pain and discomfort caused by long time sitting, tired or lumbar problem, not only can prevent the occurrence and deterioration of the waist disease, but also can help the user to relax the pressure, relax the body and mind in the psychology, improve the overall comfort and life quality, escort the waist health of people.

[0003] However, the common waist massage chair is mostly including rotating motor and massage head, the rotating motor drives the massage head to rotate, the massage head contacts the human waist, so as to achieve the effect of rubbing and massaging the waist, the feeling is general, and it is difficult to compare with the effect of artificial massage. SUMMARY

[0004] Therefore, in view of the above problems, the present application provides a massage chair with massage effect similar to artificial massage.

[0005] The present application is realized by the following technical solutions:

[0006] A massage chair, comprising a shell assembly, a massage head arranged above the shell assembly, a transmission shaft rotatably arranged in the shell assembly, an end of the transmission shaft being hingedly connected with a connecting rod for driving the massage head, two ends of the connecting rod penetrating into two massage heads respectively to fix the massage heads and drive the massage heads to move, and a pressing driving rod being fixedly connected with the connecting rod on both sides of the hinged part of the connecting rod and facing away from the human waist.

[0007] A limiting ring for limiting the movement of the free end of the pressing driving rod is fixedly arranged in the shell assembly, a plurality of first coupling structures are arranged on the surface of the limiting ring opposite to the pressing driving rod, the first coupling structure comprises a boss and a groove, the boss and the groove are symmetrically arranged on the surface of the limiting ring along the central axis of the limiting ring, the pressing driving rod is arranged in two and symmetrically arranged on both sides of the hinged part of the connecting rod, and the two pressing driving rods are matched with the boss and the groove on the limiting ring respectively.

[0008] As a further improvement of the application, the cross section of the convex post comprises a first rising arc segment, a top end and a first falling arc segment and a bottom segment, the cross section of the groove comprises a second falling arc segment, a bottom end and a second rising arc segment and a top segment, the first rising arc segment of the convex post and the second falling arc segment of the groove are identical in shape, and the first falling arc segment of the convex post and the second rising arc segment of the groove are identical in shape.

[0009] As a further improvement of the application, a sliding structure is mounted on the free end of the pressing driving rod to be in close sliding connection with the surface of the abutting ring.

[0010] As a further improvement of the application, a soft light is arranged inside the massage head, a wire end is electrically connected to the soft light, an inner wall of the abutting ring is provided with an electric brush ring, a plurality of groups of second coupling structures are arranged on the surface of the electric brush ring opposite to the wire end, the second coupling structures comprise an engaging platform and an engaging groove, the engaging platform corresponds to the convex post, and the engaging groove corresponds to the groove.

[0011] As a further improvement of the application, a core support is further arranged, and the kneading massage core is arranged to be slidable in the front-rear direction on the core support, so as to control the front-rear position of the massage head relative to the human waist, and to adjust the pressing degree of the human waist.

[0012] The mounting seat is provided with a sliding groove in the side wall, the lower side of the shell assembly is provided with a sliding block which can slide into the sliding groove in the predetermined direction, and the mounting seat is provided with a limiting mechanism inside, which is used to limit the same / opposite sliding of the sliding block in the predetermined direction when the sliding block slides into the sliding groove and reaches the predetermined position.

[0013] As a further improvement of the application, the limiting mechanism comprises a limiting plate arranged inside the mounting seat, the limiting plate is provided with a locking groove, and a connecting block is slidably arranged in the locking groove, the connecting block is fixedly connected to the lower end of the shell assembly, so that the connecting block and the shell assembly slide synchronously.

[0014] The inner wall of the locking groove is provided with a plurality of limiting clamping grooves, a limiting piece is movably arranged in the connecting block, one end of the limiting piece is provided with a limiting clamping tooth, and the other side is provided with a first elastic piece, and the elastic piece acts on the limiting piece to promote the limiting clamping tooth to engage with the limiting clamping groove.

[0015] As a further improvement of the application, an inclined slope is arranged on one side of the limiting clamping tooth, and a guide slope is arranged on the limiting clamping groove to abut against the inclined slope, so as to drive the limiting clamping tooth to overcome the force of the first elastic piece and slide out of the limiting clamping groove.

[0016] As a further improvement of the present application, the end of the limiting member away from the limiting tooth is provided with a movable slot, the connecting block is provided with a hinge column which can penetrate into the movable slot, and the hinge column can slide in the front and back directions in the movable slot;

[0017] The other end of the limiting member is provided with a locking column, the connecting block is provided with a first movable hole and a second movable hole which are in communication with each other, the locking column penetrates into the first movable hole / second movable hole, the first movable hole is used for sliding the locking column when the limiting tooth slides out of the limiting tooth, the second movable hole is used for sliding the locking column when the limiting member slides in the front and back directions, and limiting the limiting tooth to reset and engage with the limiting tooth slot when the limiting member slides to the preset position.

[0018] As a further improvement of the present application, the bottom of the locking slot is provided with a first resisting boss and a second resisting boss, the lower side of the limiting member is provided with a top column, when the connecting block slides to the preset position in the locking slot, the top column abuts against the first resisting boss or the second resisting boss, thereby controlling the limiting member to slide in the front and back directions.

[0019] As a further improvement of the present application, the inside of the mounting seat is provided with a mounting slot, the limiting plate is slidably arranged in the mounting slot, wherein the lower side of the limiting plate is provided with a group of abutting plates, the mounting slot is provided with an intermediate bearing plate between the group of abutting plates, the intermediate bearing plate is slidably provided with a group of abutting blocks, a second elastic member is movably arranged between the group of abutting blocks, the second elastic member acts on the abutting blocks to drive one end of the abutting blocks to penetrate out of the intermediate bearing plate and abut against the side wall of the abutting plate, the inner wall of the side wall of the abutting plate is provided with a pressing boss for abutting against the abutting blocks and promoting the abutting blocks to compress the second elastic member when the intermediate bearing plate slides to the preset position.

[0020] The beneficial effects of the present application are as follows: the first coupling structure and the pressing driving rod are arranged in the present application, when the transmission shaft rotates at a constant speed, the pressing driving rod can drive the massage head to form a regular up-down swinging track under the action of the first coupling structure on the upper surface of the abutting ring; after a human body sits on the massage chair, the waist of the human body is in contact with the massage head, and the massage head achieves the effect of kneading and massaging the waist during the rotation, and the massage head can regularly swing up and down, so that the effect of pressing the waist is achieved, that is, the present application can realize the massage effects of deep and soft kneading, massaging and pressing on the waist muscles in a manner similar to artificial massage. BRIEF DESCRIPTION OF DRAWINGS

[0021] The preferred embodiments of the present application will be described in detail below with the aid of the accompanying drawings, so as to help understand the purposes and advantages of the present application, in which:

[0022] Figure 1 The structural schematic diagram of the present application;

[0023] Figure 2 The structural schematic diagram of the kneading massage machine core in the present application;

[0024] Figure 3 The internal structural schematic diagram of the kneading massage machine core in the present application;

[0025] Figure 4 The structural schematic diagram of the abutting ring in the present application;

[0026] Figure 5 The structural schematic diagram of the side surface of the abutting ring in the present application;

[0027] Figure 6 The structural schematic diagram of the machine core support in the present application;

[0028] Figure 7 The structural schematic diagram of the connecting block in the present application;

[0029] Figure 8 The structural schematic diagram of the limiting plate in the present application;

[0030] Figure 9 The structural schematic diagram of the cooperation between the limiting plate and the connecting block in the present application;

[0031] Figure 10 The structural schematic diagram of the cooperation between the limiting plate and the connecting block in the present application.

[0032] Chair seat 1, backrest 2, kneading massage machine core 3, shell assembly 301, massage head 302, massage protrusion 3021, transmission shaft 4, connecting rod 5, pressing driving rod 6, abutting ring 7, boss 701, recess 702, first rising arc segment 7011, vertex end 7012, first descending arc segment 7013, second descending arc segment 7021, bottom end point end 7022, second rising arc segment 7023, top surface segment 7024, transition interval 703, soft light 8, brush ring 9, wire end 10, machine core support 201, mounting seat 202, sliding groove 203, sliding block 204, limiting plate 11, locking groove 12, connecting block 13, limiting clamping groove 14, limiting piece 15, limiting clamping tooth 16, hinged column 17, movable groove 18, locking column 19, first movable hole 20, second movable hole 21, first resistance boss 22, second resistance boss 23, abutting column 24, mounting groove 25, intermediate bearing plate 27, abutting block 28, abutting boss 29. DETAILED DESCRIPTION

[0033] The application will be described in further detail below with reference to the drawings and embodiments.

[0034] The orientation terms mentioned or possibly mentioned in the present specification, such as up, down, left, right, front, back, front side, back side, top, bottom, etc., are defined with respect to the configuration shown in the drawings, and the words "inner" and "outer" refer to the direction toward or away from the geometric center of a particular component, which are relative concepts, and thus can change accordingly depending on the different positions, different use states, etc. Therefore, these or other orientation terms should not be interpreted as limiting terms.

[0035] Reference Figures 1 to 9 The application disclosed in the embodiments of the present application is:

[0036] A massage chair, comprising a seat 1, a backrest 2 arranged at the rear side of the seat 1, and a kneading massage core 3 arranged on the backrest 2 corresponding to the position of the human waist, wherein the kneading massage core 3 comprises a shell assembly 301, a driving assembly arranged inside the shell assembly 301, and a massage head 302 arranged on the shell assembly 301, the surface of the massage head 302 is provided with a plurality of massage protrusions 3021 of different sizes, which are made of silicone material, soft and elastic, capable of simulating the finger pressure touch feeling of human hand during massage, mainly acting on the muscle groups of the waist and back, promoting local blood circulation through pressing, and relieving muscle tension; the driving assembly comprises a transmission shaft 4, the end of the transmission shaft 4 is hinged with a connecting rod 5 for driving the massage head 302, the two ends of the connecting rod 5 are respectively inserted into the interiors of two massage heads 302 to fix and drive the massage heads 302 to move, so that the transmission shaft 4 can drive the massage heads 302 to rotate when rotating, in addition, in the present embodiment, the massage heads 302 and the transmission shaft 4 have a swing gap therebetween, so that the massage heads 302 can swing around the hinge point of the transmission shaft 4 following the connecting rod 5, and the connecting rod 5 is fixedly connected with a pressing driving rod 6 on both sides of the hinge position (middle part) of the connecting rod 5, which is directed away from the human waist; specifically, the driving assembly in the present embodiment comprises a double-head motor (not shown in the figure), the double-head motor is provided with a gear transmission assembly (not shown in the figure) at both ends, the gear transmission assembly is in transmission connection with the transmission shaft 4, so as to control the rotation of the transmission shaft 4, and further drive the massage heads 302 to rotate.

[0037] A stop ring 7 is fixedly arranged in the shell assembly 301 to limit the movement of the pressing driving rod 6. When the transmission shaft 4 drives the massage head 302 to rotate, the lower end of the pressing driving rod 6 always abuts against the surface of the stop ring 7. Therefore, the pressing driving rod 6 moves along the surface of the stop ring 7. In the embodiment, a plurality of groups of first coupling structures are arranged on the surface of the stop ring 7 opposite to the pressing driving rod 6, and each group of first coupling structures comprises a boss 701 and a groove 702, which are symmetrically arranged along the central axis of the stop ring 7. Therefore, when the pressing driving rod 6 moves along the surface of the stop ring 7, the pressing driving rod 6 acts on the massage head 302 to make the massage head 302 rise and fall along the boss 701 and the groove 702, thereby driving the massage head 302 to swing up and down, so as to realize a more conformable massage effect on the waist area of the user.

[0038] In the embodiment, the boss 701 and the groove 702 are alternately arranged, which makes the swing of the massage head 302 regular and rhythmic, thereby simulating the effect of hand massage and improving the user experience. In addition, a plurality of groups of first coupling structures are arranged to form a continuous undulating path, which is similar to the undulating structure of a wave curve, and the boss 701 and the groove 702 are smoothly connected, so that the pressing driving rod 6 can smoothly move along the boss 701 to the top and then slide into the bottom of the groove 702, and then move along the next boss 701, and so on, thereby realizing the continuous undulating swing of the massage head 302. The swing amplitude can be designed according to the stress characteristics of the muscles of the waist of the human body, for example, the height difference between the boss 701 and the groove 702 is set to a reasonable range (5-20 mm) that fits the curve of the waist of the human body. By adjusting the distribution density and height difference of the boss 701 and the groove 702, the massage rhythm and intensity can be diversified and controlled, thereby meeting the individual needs of different users. In addition, the structure design is reasonable and stable, which effectively improves the practicability and comfort of the massage device. After the human body sits on the massage chair, the waist of the human body abuts against the massage head 302, and the massage head 302 achieves the effect of kneading and massaging the waist during rotation, and at the same time, the massage head 302 regularly swings up and down to achieve the effect of pressing the waist, that is, the embodiment can simultaneously realize the massage effect of deeply and gently kneading, massaging and pressing the muscles of the waist.

[0039] In addition, it is worth mentioning that in the conventional design, only one pressing driving rod 6 is usually arranged to drive the massage head 302 to swing, and such a design has a potential problem in actual use: because the massage head 302 has a swinging feature, when the human waist contacts the massage head 302, the pressure applied by the body directly drives the massage head 302 to passively swing. If the pressing driving rod 6 is just located at the position of the groove 702 on the upper surface of the abutting ring 7 and is in abutment with the groove 702 in the initial state, then under the pressure of the human body, the other side of the massage head 302 will drive the pressing driving rod 6 to displace synchronously when swinging, at which time the pressing driving rod 6 is easy to be out of contact with the upper surface of the abutting ring 7, and this disengaged state directly leads to a key problem: when the transmission shaft 4 continues to drive the massage head 302 to rotate, the pressing driving rod 6 that loses the guiding effect of the abutting ring 7 can no longer drive the massage head 302 to complete the up-down swinging action, and finally causes the originally designed pressing massage effect to completely fail. Based on the above problem, the embodiment is improved by structural optimization, the pressing driving rod 6 is arranged as two and symmetrically distributed on both sides of the hinged part of the connecting rod 5, and the two pressing driving rods 6 are respectively matched with the boss 701 and the groove 702 on the abutting ring 7, so that when the massage head 302 is subjected to the pressure of the human body, a stable bidirectional support and guiding structure can be formed. This design effectively avoids the single-point failure problem and ensures that at least one pressing driving rod 6 is always in contact with the boss 701 in any force direction, so as to maintain the stable matching relationship between the pressing driving rod 6 and the abutting ring 7. In the process of continuous rotation of the transmission shaft 4, this symmetrical driving structure can ensure that the massage head 302 always has a stable up-down swinging trajectory, and even in the case that the human waist applies an external force, the designed pressing massage effect can also be continuously output, further improving the reliability and use comfort of the massage device.

[0040] Specifically, in the embodiment, the cross section of the boss 701 comprises a first rising arc segment 7011, an apex end 7012, a first descending arc segment 7013 and a bottom surface segment 7014, the cross section of the groove 702 comprises a second descending arc segment 7021, a bottom end point end 7022, a second rising arc segment 7023 and a top surface segment 7024, the first rising arc segment of the boss 701 and the second descending arc segment of the groove 702 are the same in shape, and the first descending arc segment of the boss 701 and the second rising arc segment of the groove 702 are the same in shape.

[0041] In addition, the adjacent groove 702 and the boss 701 have a horizontal transition section 703, forming a cycle structure of "boss 701-transition section 703-groove 702-transition section 703-boss 701", which ensures that any boss 701 on the abutting ring 7 corresponds to a groove 702 at the position of the diameter toe point (i.e., the boss 701 and the groove 702 are symmetrically arranged on the surface of the abutting ring 7 along the central axis of the abutting ring 7), which ensures that when the massage head 302 is passively swung by human pressure, the two pressing driving rods 6 can always be in contact with the upper surface of the abutting ring 7, that is, one of the pressing driving rods 6 tends to be separated from the boss 701 or the groove 702 due to swinging, and the other pressing driving rod 6 in the opposite position will immediately bear the abutting effect, through the cooperation of the two, effectively avoiding the problem of the pressing driving rod 6 being separated from contact; at the same time, during the rotation of the transmission shaft 4 driving the massage head 302, the two pressing driving rods 6 will alternately displace along the track of the boss 701, the transition section 703 and the groove 702 on the wavy surface of the abutting ring 7, and the transition section 703 provides a buffer space for the transition of the pressing driving rod 6, reduces the impact force when the pressing driving rod 6 switches between the boss 701 and the groove 702, and makes the whole up-down swinging action more smooth and smooth; this double abutting design not only solves the key defect of the massage effect failure in the original structure, but also significantly improves the continuity and reliability of the massage head 302 action, ensures the stable output of the pressing massage effect, and enhances the user experience of the massage chair in the actual use process.

[0042] The free end of the pressing driving rod 6 is provided with a sliding structure, i.e., a roller assembly (not shown in the figure), for closely sliding connection with the surface of the abutting ring 7, which includes a roller support and a roller body rotatably installed on the roller support. The roller body is in contact with the surface of the abutting ring 7, and the rolling friction is used instead of sliding friction, which greatly reduces the friction resistance, improves the sensitivity and smoothness of the massage head 302 in the swinging process, and reduces mechanical wear.

[0043] The massage head 302 is internally provided with a soft light lamp, the soft light lamp is electrically connected with a wire end 10, the inner wall of the abutting ring 7 is provided with a brush ring 9, the wire end 10 abuts with the brush ring 9, the lower end surface of the brush ring 9 is electrically connected with a power supply and a control device (the power supply and the control device are arranged in the shell assembly 301), wherein, the wire end 10 and the brush ring 9 are both made of conductive material, specifically, a plurality of second coupling structures are arranged on the surface opposite to the wire end 10 of the brush ring, the second coupling structure includes an adapter platform and an adapter groove, the adapter platform corresponds to the boss 701, and the adapter groove corresponds to the groove 702; that is, the upper surface of the brush ring 9 is consistent with the upper surface of the abutting ring 7, when the driving rod 6 is pressed to drive the sliding structure to slide along the surface of the abutting ring 7, the wire end 10 moves synchronously with the sliding structure, the conductive contact at the end of the wire end 10 can always stably contact with the second coupling structure on the brush ring 9, so that the soft light lamp can continuously obtain power supply during the rotation of the massage head 302, and the light flickering or extinguishing caused by poor contact is avoided. Wherein, the arrangement of the soft light lamp 8 not only can provide soft lighting effect during the massage process, improve the atmosphere of the user during use, but also can help the user to intuitively observe the working state of the massage head 302 in the dark environment, enhance the safety and convenience of the use experience; when the massage head 302 is driven by the transmission shaft 4 to rotate and reciprocate up and down, the wire end 10 can always stably contact with the brush ring 9, so as to ensure that the circuit of the soft light lamp 8 is continuously conducted, and the wire winding or poor contact caused by the complex movement of the massage head 302 is avoided; at the same time, the cooperation mode of the wire end 10 and the brush ring 9 ingeniously utilizes the existing structure space of the pressing driving rod 6 and the abutting ring 7, without the need of additional complex transmission or connecting components, so that the overall structure is more compact, and the assembly difficulty and production cost are reduced.

[0044] In addition, the existing massage chair has the technical problem of poor massage force and human body adaptability. Specifically, the kneading massage core 3 of the massage chair is usually in a relatively fixed state with the backrest 2, and it is difficult to flexibly adjust the front and back positions of the massage head 302 relative to the human waist according to the differences in the body shape of different users, the thickness of the waist muscles, and the individualized needs for massage force. When the user's waist curve, fat layer thickness, or tolerance to pressing intensity differ, the massage head 302 in a fixed position is difficult to accurately fit the waist stress points, and it is easy to appear the condition of too light pressing resulting in poor massage effect, or too heavy pressing causing discomfort or even muscle damage, and it is unable to realize dynamic adjustment and control of the contact pressing degree of the human waist. Based on this, the backrest 2 is provided with a core support 201 in the embodiment, the core support 201 is configured to be suitable for the arc-shaped structure of the human waist, and the kneading massage core 3 is configured to be slidably arranged on the core support 201 in the front and back directions, so as to control the front and back positions of the massage head 302 relative to the human waist, and adjust the pressing degree of contact with the human waist. Specifically, the core support 201 is provided with a mounting seat 202, the side wall of the mounting seat 202 is provided with a sliding groove 203, the lower side of the shell assembly 301 is provided with a sliding block 204 that can slide into the sliding groove 203 in a predetermined direction (the front and back directions of the massage chair), and the mounting seat 202 is provided with a limiting mechanism. The limiting mechanism is used to limit the same / opposite sliding of the sliding block 204 in the predetermined direction when the sliding block 204 slides into the sliding groove 203 and slides to a predetermined position. The user can adjust the sliding of the shell assembly 301 on the mounting seat 202, and after sliding to the preset position, the limiting mechanism acts on the shell assembly 301 and the mounting seat 202 to realize the fixing effect, so as to control the front and back positions of the massage head 302 relative to the human waist, so that the massage head 302 adapts to different waist characteristics, and so that the massage head 302 can achieve effective pressing intensity when contacting the human waist, and can also avoid discomfort caused by excessive extrusion.

[0045] The limiting mechanism comprises a limiting plate 11 arranged inside the mounting seat 202, the limiting plate 11 is provided with a locking groove 12, a connecting block 13 is slidably arranged in the locking groove 12, the connecting block 13 is connected with the lower end of the shell assembly 301 through bolt fixing, so that the connecting block 13 and the shell assembly 301 slide synchronously; wherein the inner wall of the locking groove 12 is provided with a plurality of limiting clamping grooves 14, a limiting piece 15 is movably arranged in the connecting block 13, one end of the limiting piece 15 is provided with a limiting clamping tooth 16, and the other side is provided with a first elastic piece (compression spring), the elastic piece acts on the limiting piece 15 to make the limiting clamping tooth 16 and the limiting clamping groove 14 mesh with each other; and the limiting clamping tooth 16 is provided with an inclined slope on one side, and the limiting clamping groove 14 is provided with a guide slope abutting against the inclined slope, so as to drive the limiting clamping tooth 16 to overcome the action force of the first elastic piece and slide out of the limiting clamping groove 14.

[0046] When the user needs to adjust the position of the massage head 302, a pulling force along the direction of the locking groove 12 (specifically the front and back direction of the massage chair) can be applied to the connecting block 13, at this time the limiting clamping tooth 16 is extruded by the inner wall of the limiting clamping groove 14, which will compress the first elastic piece and shrink into the connecting block 13, so that the connecting block 13 can drive the shell assembly 301 to smoothly slide along the locking groove 12; and when the connecting block 13 slides to the appropriate position, the first elastic piece will push the limiting piece 15 to reset, so that the limiting clamping tooth 16 is embedded in the corresponding limiting clamping groove 14, thereby limiting the random sliding of the connecting block 13 in the locking groove 12, ensuring that the shell assembly 301 and the massage head 302 are stably stopped at the current position, realizing the precise adjustment and fixation of the front and back positions of the massage head 302, and the compact structure of the limiting mechanism is convenient to operate, which can provide clear gear feeling during the adjustment of the user, and at the same time ensures the stability of the position of the massage head 302 after locking, further improving the safety and comfort of the massage chair during use.

[0047] Of course, as shown in the figure, since the limiting clamping tooth 16 in the above-mentioned limiting mechanism is provided with an inclined slope only on one side, this structural characteristic determines that the massage head 302 can only realize one-way sliding adjustment. When the user applies a forward pulling force along the direction of the locking groove 12 to the connecting block 13, the limiting clamping tooth 16 can be smoothly retracted through the cooperation of the inclined slope and the guide slope of the limiting clamping groove 14; but when the opposite direction pushing force is applied, the other side of the limiting clamping tooth 16 without slope will directly abut against the groove wall of the limiting clamping groove 14, which cannot realize retraction and disengagement, resulting in that the connecting block 13 cannot slide in the opposite direction, and further making the kneading massage core 3 in the embodiment unable to reset to the initial position after adjustment.

[0048] The limiting member 15 is provided with a movable slot 18 at one end away from the limiting tooth 16, the connecting block 13 is provided with a hinge column 17 which can be penetrated into the movable slot 18, and the hinge column 17 can slide in the front and back directions in the movable slot 18; the other end of the limiting member 15 is provided with a locking column 19, the connecting block 13 is provided with a first movable hole 20 and a second movable hole 21 which are in communication with each other, the locking column 19 is penetrated into the first movable hole 20 / second movable hole 21, the first movable hole 20 is used for sliding the locking column 19 when the limiting tooth 16 slides out of the limiting slot 14, the second movable hole 21 is used for sliding the locking column 19 when the limiting member 15 slides in the front and back directions, and limiting the limiting tooth 16 to reset and engage with the limiting slot 14 when the limiting member 15 slides to the preset position.

[0049] As shown in the figure, when the limiting member 15 is contracted to the inside of the connecting block 13 due to the cooperation of the inclined surface of the limiting tooth 16 and the limiting slot 14, the hinge column 17 will rotate and slide in the front and back directions relative to the movable slot 18, at this time the movable slot 18 provides a moving space for the hinge column 17; at the same time, when the limiting member 15 is contracted to the inside of the connecting block 13 due to the cooperation of the inclined surface of the limiting tooth 16 and the limiting slot 14, the locking column 19 will move in the first movable hole 20 (as shown in the figure, from point A to point B); then, control the connecting block 13 to continue to slide along the locking slot 12, the limiting member 15 is forced to move in the front and back directions, the hinge column 17 is correspondingly slid in the second movable hole 21 (from point B to point C), at this time, the limiting member 15 is limited to reset and engage with the limiting slot 14.

[0050] Of course, how to control the limiting member 15 to be forced to slide in the front and back directions in the foregoing should also be disclosed, specifically, the bottom of the locking slot 12 is provided with a first resisting boss 22 and a second resisting boss 23, the lower side of the limiting member 15 is provided with a top-pushing column 24, the top-pushing column 24 is movable in the first resisting boss 22 and the second resisting boss 23; when the connecting block 13 slides to the preset position in the locking slot 12, the top-pushing column 24 abuts against the first resisting boss 22 or the second resisting boss 23, then the connecting block 13 continues to slide, which makes the limiting member 15 slide in the front and back directions relative to the connecting block 13, and the sliding distance is adapted to the length of the movable slot 18.

[0051] Further, in the embodiment, the limiting plate 11 is detachably arranged on the movement support 201. Specifically, the mounting seat 202 is internally provided with a mounting groove 25, and the limiting plate 11 is slidingly arranged in the mounting groove 25, so that the limiting plate 11 can be detached from the front opening of the mounting groove 25. A group of abutting plates 26 is arranged on the lower side of the limiting plate 11. An intermediate bearing plate 27 is arranged between the group of abutting plates 26 in the mounting groove 25. A group of abutting blocks 28 is slidingly arranged in the intermediate bearing plate 27. A second elastic member (not shown in the figure) is movably arranged between the group of abutting blocks 28. The second elastic member acts on the abutting blocks 28 to drive one end of the abutting blocks 28 to protrude out of the intermediate bearing plate 27 and abut against the side wall of the abutting plate 26. A pressing boss 29 is arranged on the inner wall of the side wall of the abutting plate 26, so as to abut against the abutting blocks 28 when the intermediate bearing plate 27 slides to a preset position and drive the abutting blocks 28 to compress the second elastic member (compression spring). When the limiting plate 11 slides into the mounting groove 25, the limiting plate 11 is located on the upper side of the intermediate bearing plate 27, and the abutting plate 26 is located on both sides of the intermediate bearing plate 27. At this time, the abutting blocks 28 are kept in the protruding state under the elastic force of the second elastic member, and the end portion thereof abuts against the side wall of the abutting plate 26. During the sliding process, when the pressing boss 29 contacts the abutting blocks 28 and continuously applies a pushing force, the abutting blocks 28 are shrunk into the intermediate bearing plate 27 under the extrusion of the pressing boss 29, and the second elastic member is compressed. After the abutting blocks 28 pass the pressing boss 29, the abutting blocks 28 are reset under the elastic force of the second elastic member. At this time, the installation is completed, and the pressing boss 29 preliminarily limits the limiting plate 11. The limiting plate 11 can be smoothly pulled out from the front opening of the mounting groove 25 only by controlling the limiting plate 11 to slide outward, so that the pressing boss 29 extrudes the abutting blocks 28 again, and the abutting blocks 28 slide into the intermediate bearing plate 27 against the elastic force of the second elastic member. At this time, the abutting relationship between the abutting blocks 28 and the abutting plate 26 is released, and the limiting plate 11 can be smoothly pulled out from the front opening of the mounting groove 25. The detachable structure design makes the dismounting process of the limiting plate 11 not need additional tools, and the operation is convenient.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features. These modifications or replacements do not change the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A massage chair, comprising a shell assembly (301), a massage head (302) arranged on the shell assembly (301), and a transmission shaft (4) rotatably arranged in the shell assembly (301), characterized in that: The end of the transmission shaft (4) is hinged with a connecting rod (5), the two ends of the connecting rod (5) respectively penetrate into the interiors of two massage heads (302) to fix and drive the massage heads (302) to move, and the two sides of the hinged part of the connecting rod (5) are respectively fixedly connected with pressing driving rods (6) which are away from the human waist. A limiting ring (7) which limits the movement of the free ends of the pressing driving rods (6) is fixedly arranged in the shell assembly (301), a plurality of groups of first coupling structures are arranged on the surface of the limiting ring (7) opposite to the pressing driving rods (6), the first coupling structures comprise a boss (701) and a groove (702), the boss (701) and the groove (702) are symmetrically arranged on the surface of the limiting ring (7) along the central axis of the limiting ring (7), the pressing driving rods (6) are arranged in two and symmetrically distributed on the two sides of the hinged part of the connecting rod (5), and the two pressing driving rods (6) are respectively matched with the bosses (701) and the grooves (702) on the limiting ring (7).

2. The massaging chair of claim 1, wherein: The cross section of the boss (701) comprises a first rising arc segment (7011), an apex end (7012), a first falling arc segment (7013) and a bottom surface segment (7014), the cross section of the groove (702) comprises a second falling arc segment (7021), a bottom end point end (7022), a second rising arc segment (7023) and a top surface segment (7024), the first rising arc segment (7011) of the boss (701) is the same in shape as the second falling arc segment (7021) of the groove (702), and the first falling arc segment (7013) of the boss (701) is the same in shape as the second rising arc segment (7023) of the groove (702).

3. The massaging chair of claim 2, wherein: The interior of the massage head (302) is provided with a soft light lamp (8), the soft light lamp (8) is electrically connected with a wire end (10), the inner wall of the limiting ring (7) is provided with a brush ring (9), a plurality of groups of second coupling structures are arranged on the surface of the brush ring (9) opposite to the wire end (10), the second coupling structures comprise an adapter table and an adapter groove, the adapter table corresponds to the boss (701), and the adapter groove corresponds to the groove (702).

4. The massaging chair of claim 3, wherein: A sliding structure for closely slidingly connecting with the surface of the limiting ring (7) is mounted on the free end of the pressing driving rod (6).

5. The massaging chair of claim 1, wherein: The massage head (302) is arranged on the machine core support (201) in a forward and backward sliding manner, so that the forward and backward positions of the massage head (302) relative to the human waist are controlled, and the pressing degree of contact with the human waist is adjusted. The core support (201) is provided with a mounting seat (202), the mounting seat (202) is provided with a sliding groove (203) on the side wall, the shell assembly (301) is provided with a sliding block (204) which can slide into the sliding groove (203) in a predetermined direction on the lower side, and the mounting seat (202) is provided with a limiting mechanism, which is used to limit the same / opposite sliding of the sliding block (204) in a predetermined direction when the sliding block (204) slides into the sliding groove (203) and slides to a predetermined position.

6. A massage chair according to claim 5, characterized in that: The limiting mechanism comprises a limiting plate (11) arranged in the mounting seat (202), the limiting plate (11) is provided with a locking groove (12), the locking groove (12) is slidably provided with a connecting block (13), and the connecting block (13) is fixedly connected with the lower end of the shell assembly (301), so that the connecting block (13) and the shell assembly (301) slide synchronously. Wherein, the inner wall of the locking groove (12) is provided with a plurality of limiting clamping grooves (14), the connecting block (13) is movably provided with a limiting piece (15), one end of the limiting piece (15) is provided with a limiting clamping tooth (16), the other side is provided with a first elastic piece, and the first elastic piece acts on the limiting piece (15) to make the limiting clamping tooth (16) and the limiting clamping groove (14) mesh with each other.

7. The massaging chair of claim 6, wherein: The side of the limiting clamping tooth (16) is provided with an inclined slope, and the limiting clamping groove (14) is provided with a guide slope which abuts against the inclined slope, so as to drive the limiting clamping tooth (16) to overcome the action force of the first elastic piece and slide out of the limiting clamping groove (14).

8. The massaging chair of claim 7, wherein: The end of the limiting piece (15) away from the limiting clamping tooth (16) is provided with a movable groove (18), the connecting block (13) is provided with a hinge column (17) which can penetrate into the movable groove (18), and the hinge column (17) can slide in the front and back directions in the movable groove (18); The other end of the limiting piece (15) is provided with a locking column (19), the connecting block (13) is provided with a first movable hole (20) and a second movable hole (21) which are in communication with each other, the locking column (19) penetrates into the first movable hole (20) / second movable hole (21), the first movable hole (20) is used for sliding of the locking column (19) when the limiting clamping tooth (16) slides out of the limiting clamping tooth (16), and the second movable hole (21) is used for sliding of the locking column (19) when the limiting piece (15) slides in the front and back directions, and limiting the limiting clamping tooth (16) from resetting and meshing with the limiting clamping groove (14) when the limiting piece (15) slides to a preset position.

9. The massaging chair of claim 8, wherein: The bottom of the locking groove (12) is provided with a first resisting boss (22) and a second resisting boss (23), the lower side of the limiting piece (15) is provided with a resisting column (24), when the connecting block (13) slides to the preset position in the locking groove (12), the resisting column (24) abuts against the first resisting boss (22) or the second resisting boss (23), thereby controlling the limiting piece (15) to slide in the front and back directions.

10. The massaging chair of claim 9, wherein: The mounting seat (202) is internally provided with a mounting groove (25), the limiting plate (11) is slidably arranged in the mounting groove (25), wherein the lower side of the limiting plate (11) is provided with a group of resisting plates (26), the mounting groove (25) is provided with an intermediate bearing plate (27) between the group of resisting plates (26), the intermediate bearing plate (27) is slidably provided with a group of resisting blocks (28), a second elastic piece is movably arranged between the group of resisting blocks (28), the second elastic piece acts on the resisting blocks (28), so as to drive one end of the resisting blocks (28) to pass through the intermediate bearing plate (27) and abut against the side wall of the resisting plate (26), the inner wall of the side wall of the resisting plate (26) is provided with a resisting boss (29), so as to abut against the resisting blocks (28) when the intermediate bearing plate (27) slides to the preset position and make the resisting blocks (28) compress the second elastic piece.

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