CN217658851U - Chair and leg massager thereof - Google Patents

Abstract

The utility model discloses a chair and shank massager and massage method thereof, including the expansion bracket, install the shank massage assembly on the expansion bracket and install the foot massage assembly on the expansion bracket, the expansion bracket can drive shank massage assembly and foot massage assembly and remove, the massager is still including the detection switch that is used for preventing that the expansion bracket from colliding with ground, the detection switch is including the support that contacts with earth, the switch that contacts with earth and the piece that resets that is used for the support that contacts with earth to reset, the support swing that contacts with earth is installed in the expansion bracket bottom, and the support that contacts with earth can contact with the switch contact that contacts with earth after the swing, switch and expansion bracket fixed connection contact with earth, the switch that contacts with earth is connected with flexible motor electricity. Therefore, the leg massager can be prevented from colliding with the ground, and the stability and the safety of the chair and the leg massager are improved.

Description

Chair and leg massager thereof

Technical Field

The invention relates to the field of home furnishing, in particular to a chair and a leg massager thereof.

Background

The chair generally utilizes machinery to massage the legs of a human body by rolling or kneading and the like to circulate qi and blood, so that muscles are relaxed, and the chair plays an important role in ensuring the health of the human body.

In the prior art, the massage of crus and soles usually adopts an expansion bracket to adjust the massage position; patent document CN201921427429.3 discloses a chair and a leg forward and backward rotation telescopic mechanism thereof, which focuses on: the leg massage component and the foot massage component are connected onto the fixing frame, a driving motor component, a transmission component connected with the driving motor component and a lead screw connected with the transmission component are arranged on the fixing frame, threads of the lead screw are divided into an upper section lead screw and a lower section lead screw, the thread rotating directions of the upper section lead screw and the lower section lead screw are opposite, the upper section lead screw is movably connected with a leg lead screw nut of the leg massage component, and the lower section lead screw is movably connected with a foot lead screw nut of the foot massage component.

In the prior art, in the process that a driving motor drives a leg massage assembly and a foot massage assembly to move through a screw rod, due to the fact that a corresponding feedback mechanism is lacked, a user cannot respond timely after the telescopic mechanism collides with the ground, the user is very easy to injure a chair, the telescopic mechanism and personnel, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the chair has certain potential safety hazards due to the lack of a corresponding feedback device in the prior art, the invention aims to provide the chair and a leg massager thereof; the safety of the chair and the leg massager thereof is improved by additionally arranging the detection switch for detecting whether the massager is about to abut against the ground at the bottom of the leg massager.

In order to achieve the purpose, the invention adopts the following technical scheme: chair leg massager, including the expansion bracket, install the shank massage assembly on the expansion bracket and install the foot massage assembly on the expansion bracket, install the lead screw on the expansion bracket and be used for driving lead screw pivoted flexible motor, flexible motor is installed on the expansion bracket, the one end and the flexible motor of lead screw are connected, the screw thread section of lead screw divide into the last screw thread section that is used for driving shank massage assembly removal and is used for driving the lower screw thread section that foot massage assembly removed, the massager is still including the detection switch who is used for preventing expansion bracket and ground collision, detection switch is including the support that contacts to the ground, the reset piece that the support resets contacts to the ground with being used for contacting to the ground the switch, the support swing that contacts to the ground is installed in the expansion bracket bottom, and the support that contacts to the ground can contact with the switch contact to the ground after the swing, contact to the ground switch and expansion bracket fixed connection, the switch that contacts to the ground is connected with flexible motor electricity. Therefore, the chair can give timely feedback when the leg massager is about to collide with the ground, the chair or the chair can control the stretching length of the leg massager in time, the leg massager is prevented from colliding with the ground, and the stability and the safety of the chair and the leg massager are improved.

Preferably, the thread direction of the upper thread segment is the same as the thread direction of the lower thread segment.

Preferably, the pitch of the upper thread segments is less than the pitch of the lower thread segments.

Preferably, the screw thread segments on the lower side of the screw have a greater length than the screw thread segments on the upper side. By the arrangement, the sufficient operation range of the foot massage assembly is ensured, so that the structure of the massager is more compact and reasonable.

Preferably, the telescopic frame comprises a first-level component, a second-level component and a third-level component, the first-level component is in sliding fit with the second-level component, the second-level component is in sliding fit with the third-level component, the telescopic motor is installed on the first-level component, the second-level component is in threaded connection with an upper threaded section of the screw rod through a second-level screw nut, the third-level component is in threaded connection with a lower threaded section of the screw rod through a third-level screw nut, the leg massage assembly is installed on the second-level component, and the foot massage assembly is installed on the third-level component.

Preferably, the massager comprises detection means for detecting the position of the secondary assembly.

Preferably, the detection device comprises a plurality of stroke detection plates and a plurality of stroke magnets, the stroke detection plates are mounted on the primary assembly, the stroke detection plates are located at different heights, the stroke magnets are mounted on the secondary assembly, and the stroke magnets are located at different heights. Whether secondary assembly and tertiary assembly move to extreme position can be judged out in this way, and then the stability and the safety of expansion bracket operation are guaranteed.

Preferably, the leg massage assembly comprises a leg frame, an air bag and an air pump, wherein the leg frame is arranged on the secondary assembly and comprises two first accommodating grooves which are recessed backwards, the two first accommodating grooves are respectively used for accommodating legs, the air bag is arranged on the inner side of each first accommodating groove, and the air bag is connected with the air pump through a connecting pipe; in the process of massaging the legs, the legs are respectively placed in the two first accommodating grooves, and the legs are continuously kneaded and massaged through the inflation and deflation of the air bags.

Preferably, the foot massage assembly comprises a bottom plate, three transmission shafts, a plurality of massage wheels, a foot upper cover and a power device, wherein the bottom plate is fixed on the three-stage component, the three transmission shafts are rotatably arranged on the bottom plate and are arranged in the front and back directions, transmission belt wheels are fixedly arranged on the transmission shafts, two adjacent transmission belt wheels are connected through a second transmission belt, two massage wheels are arranged on each transmission shaft, and a plurality of salient points for massaging feet are protruded on the outer circumferential surface of each massage wheel; the power device comprises a massage motor, a worm and a worm wheel, wherein the worm wheel is arranged on one of the transmission shafts, the massage motor is arranged on the bottom plate, the worm is arranged on the output end of the massage motor, and the worm wheel is meshed with the worm; the foot upper cover is fixedly installed on the bottom plate and comprises three forward-protruding limiting portions, second accommodating grooves are formed in the bottoms of the limiting portions, third accommodating grooves used for accommodating soles are formed between every two adjacent limiting portions, the two ends of the transmission shaft, the belt wheel and the power device are located in the second accommodating grooves, and part of the structure of the massage wheel is located in the third accommodating grooves. So set up, keep apart human and power device through spacing portion, guarantee the safe in utilization of chair, the massage wheel that sets up through three group fore-and-aft directions only wants the massage to user's preceding sole, arch of foot and heel etc. respectively, improves user's use and experiences.

A chair, comprising the leg massager.

The technical scheme of the invention has the beneficial effects that: 1) The detection switch is used for feeding back the leg massager in time when the leg massager is about to collide with the ground, so that the chair or the leg massager can control the stretching length of the leg massager in time, the leg massager is prevented from colliding with the ground, and the stability and the safety of the chair and the leg massager are improved; 2) The screw thread on the screw rod is divided into an upper section and a lower section, but the screw threads of the upper section and the lower section have the same rotating direction, different screw pitches and different lengths, so that differential movement of the leg massage assembly and the foot massage assembly can be realized, the leg massage assembly moves slower, the leg massage assembly moves faster, and the position of massaging crus can be more accurate during massage; 3) Meanwhile, the thread turning directions on the screw rod are the same, so that the leg massage assembly is positioned at the highest point of the stroke of the telescopic frame in the initial state, and a user can obtain more pleasant massage experience regardless of the length of legs.

Drawings

FIG. 1 is a schematic view of a leg massager;

FIG. 2 is a first schematic structural view of the telescopic frame;

FIG. 3 is a second schematic structural view of the telescopic frame;

FIG. 4 is a schematic structural view of the primary assembly after installation of the telescopic motor and the lead screw;

FIG. 5 is a schematic structural diagram of a secondary assembly;

FIG. 6 is a schematic structural view of a tertiary assembly;

FIG. 7 is a schematic diagram of the detection switch;

fig. 8 is a schematic view of a foot massage assembly.

Reference numerals are as follows: 2. a leg massage assembly; 21. a calf support; 22. a first accommodating groove;

3. a foot massage assembly; 31. a base plate; 32. a foot upper cover; 321. a third accommodating groove; 33. a drive shaft; 34. a massage wheel; 35. a drive pulley; 36. a power plant;

4. a primary component; 40. a motor mounting plate; 41. a cross beam; 42. hanging a lug; 43. a first-stage slide rail; 44. a primary vertical pipe; 45. a telescopic motor; 46. a screw rod; 461. an upper thread section; 462. a lower thread section; 47. a stroke detection plate; 48. a secondary screw nut; 49. a third stage screw nut;

5. a secondary component; 51. a secondary vertical pipe; 52. a secondary transverse pipe; 53. a slider; 54. a travel magnet;

6. a tertiary component; 61. a third-stage vertical pipe; 62. a third-stage slide rail; 63. a three-level transverse pipe;

7. a detection switch; 71. a mounting frame; 72. a ground contact switch; 73. a second hinge shaft; 74. a ground contacting bracket; 75. a stopper; 76. a first hinge shaft; 77. a torsion spring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Example 1

As shown in fig. 1 to 3, a leg massage apparatus comprises an expansion bracket, a leg massage assembly 2 and a foot massage assembly 3 mounted on the expansion bracket, wherein the expansion bracket comprises a screw rod 46 and an expansion motor 45 for driving the screw rod 46 to rotate, the screw thread section of the screw rod 46 is divided into an upper screw thread section 461 for driving the leg massage assembly 2 to move and a lower screw thread section 462 for driving the foot massage assembly 3 to move, the screw thread direction of the upper screw thread section 461 is the same as that of the lower screw thread section 462, the screw pitch of the upper screw thread section 461 positioned on the upper side is smaller than that of the lower screw thread section 462 positioned on the lower side, and when the expansion motor 45 drives the screw rod 46 to rotate, the moving speed of the leg mounting assembly 2 is slower than that of the foot mounting assembly 3. Like this, through the setting to screw pitch on the lead screw 46, realize the differential operation of shank massage assembly 2 and foot massage assembly 3, through the setting to two sections screw threads handedness about the lead screw 46, make the massager under initial condition, shank massage assembly 2 and foot massage assembly 3 are located the top of stroke separately, so realize the differential and syntropy motion of shank massage assembly 2 and foot massage assembly 3 through lead screw 46, can remove shank massage assembly 2 and foot massage assembly 3 to the required massage position of user, be applicable to the short crowd of shank equally, when improving suitable crowd, let the user obtain better massage experience.

In this embodiment, the lower threaded section 462 of the lead screw 46 has a length greater than the length of the upper threaded section 461. With the arrangement, the sufficient operation range of the foot massage assembly 3 is ensured, so that the structure of the massager is more compact and reasonable.

As shown in fig. 2 to 6, in this embodiment, the telescopic frame includes a primary component 4, a secondary component 5 and a tertiary component 6, the primary component 4 is slidably connected to the secondary component 5, the secondary component 5 is slidably connected to the tertiary component 6, the telescopic motor 45 and the lead screw 46 are installed on the primary component 4, the secondary component 5 is threadedly connected to an upper threaded section 461 of the lead screw 46, the tertiary component 6 is threadedly connected to a lower threaded section 462 of the lead screw 46, the leg massage assembly 2 is installed on the secondary component 5, and the foot massage assembly 3 is installed on the tertiary component 6. Further, the first-stage assembly 4 comprises a cross beam 41, first-stage slide rails 43, first-stage vertical pipes 44 and a motor mounting plate 40, the first-stage slide rails 43 are arranged symmetrically in the left and right directions, the first-stage vertical pipes 44 are arranged symmetrically in the left and right directions, the two first-stage vertical pipes 44 are positioned between the two first-stage slide rails 43, the adjacent first-stage vertical pipes 44 are fixedly connected with the first-stage slide rails 43, the cross beam 41 is positioned above the two first-stage vertical pipes 44 and is fixedly connected with the two first-stage vertical pipes 44, the left end and the right end of the cross beam 41 are fixedly connected with lugs 42, the motor mounting plate 40 is positioned between the first-stage vertical pipes 44, the left end and the right end of the motor mounting plate 40 are respectively fixedly connected with the two first-stage vertical pipes 44, a telescopic motor 45 is fixedly mounted on the motor mounting plate 40, the top of a screw rod 46 is rotatably mounted on the motor mounting plate 40, and the telescopic motor 45 is in transmission connection with the screw rod 46; the secondary assembly 5 comprises two secondary vertical pipes 51 which are arranged in bilateral symmetry, the two secondary vertical pipes 51 are fixedly connected through a secondary transverse pipe 52, sliding blocks 53 are fixedly mounted at the left end and the right end of each of the two secondary vertical pipes 51, the two primary sliding rails 43 are positioned between the two secondary vertical pipes 51, and the two sliding blocks 53 positioned between the two secondary vertical pipes 51 are respectively in sliding fit with the two primary sliding rails 43; the three-level assembly 6 comprises two three-level vertical pipes 61 and three-level slide rails 62 which are arranged in bilateral symmetry, the two three-level vertical pipes 61 are fixedly connected through three-level transverse pipes 63, the two three-level slide rails 62 are positioned between the two three-level vertical pipes 61, the adjacent three-level slide rails 62 are fixedly connected with the three-level vertical pipes 61, the two-level vertical pipes 51 are positioned between the two three-level slide rails 62, and sliding blocks 53 positioned on the outer sides of the two-level vertical pipes 51 are installed in the two three-level slide rails 62 and are in sliding fit with each other; the telescopic frame further comprises a second-stage screw rod nut 48 and a third-stage screw rod nut 49, the second-stage screw rod nut 48 is fixedly arranged on the second-stage transverse pipe 52, the second-stage screw rod nut 48 is in threaded connection with an upper threaded section 461 of the screw rod 46, the third-stage screw rod nut 49 is fixedly arranged on the third-stage transverse pipe 63, and the third-stage screw rod nut 49 is in threaded connection with a lower threaded section 462 of the screw rod 46; the leg massage assembly 2 is fixed on the secondary component 5, and the foot massage assembly 3 is fixed on the tertiary component 6. Thus, the structure of the telescopic frame is more compact. Further, as shown in fig. 2, 3 and 4, a small belt wheel is mounted on an output shaft of the telescopic motor 45, a large belt wheel is fixed on the top of the screw rod, and the small belt wheel and the large belt wheel are in transmission connection through a transmission belt. Like this, through the drive ratio between little band pulley and the big band pulley for the rotational speed of lead screw is slower, and control is more accurate.

In this embodiment, the massager further comprises a detection device for detecting the position of the secondary assembly 5, the detection device comprises a plurality of stroke detection plates 47 and stroke magnets 54, at least two stroke detection plates 47 are provided, the stroke detection plates 47 are fixedly arranged on the primary slide rail 43 of the primary assembly 4 and are arranged in the vertical direction, at least two stroke magnets 54 are provided, the stroke magnets 54 are fixedly arranged on the secondary assembly 5 through a bracket, and the stroke magnets 54 are arranged in the vertical direction; whether secondary assembly 5 and tertiary assembly 6 move to extreme position can be judged out like this setting, and then the stability and the safety of telescopic bracket operation are guaranteed.

As shown in fig. 2, 3 and 7, the massager of the present embodiment further includes a detection switch 7 for controlling the stroke of the tertiary assembly 6, the detection switch 7 includes a ground contacting bracket 74, a ground contacting switch 72 and a reset member for resetting the ground contacting bracket 74, the ground contacting bracket 74 is swingably mounted at the bottom of the tertiary assembly 6, the reset member is connected between the ground contacting bracket 74 and the tertiary assembly 6, the ground contacting switch 72 is fixedly connected to the tertiary assembly 6, and the ground contacting switch 72 is electrically connected to the telescopic motor 45; when the floor-contacting bracket 74 swings while contacting the floor, the floor-contacting bracket 74 can contact the floor-contacting switch 72, and the leg massage device turns off the extension motor 45. Thus, when the tertiary assembly 6 is in contact with the ground, it is indicated that the maximum moving distance of the tertiary assembly 6 is reached in this state, which ensures the stable and safe operation of the massager. Further, the reset element is a torsion spring 77, the detection switch further comprises a ground contacting wheel and a mounting frame 71, the mounting frame 71 is fixedly mounted on the lowest three-level transverse tube 63, one end of the ground contacting support 74 is hinged to the mounting frame 71 through a first hinge shaft 76, the other end of the ground contacting support 74 is hinged to the ground contacting wheel through a second hinge shaft 73, the lowest three-level transverse tube 63 is located between the first hinge shaft 76 and the second hinge shaft 73, the middle section of the ground contacting support 74 is pressed on the top of the lowest three-level transverse tube 63, the torsion spring 77 is sleeved on the first hinge shaft 76, one support leg of the torsion spring 77 abuts against the top of the ground contacting support 74, and the other support leg of the torsion spring 77 abuts against the bottom of the lowest three-level transverse tube 63; thus, the mounting bracket 71 can be pressed on the three-stage transverse tube, the limiting piece 75 is fixedly mounted at the top of the ground contact bracket 74, the ground contact switch 72 is fixedly mounted on the mounting bracket 71, and when the ground contact bracket 74 swings, the limiting piece 75 can be contacted with the ground contact switch 72, so that the telescopic motor is turned off.

As shown in fig. 1 and fig. 8, in the present embodiment, the foot massage assembly 3 includes a bottom plate 31, three transmission shafts 33, a plurality of massage wheels 34, a foot upper cover 32 and a power device 36, the three transmission shafts 33 are rotatably mounted on the bottom plate 31, the three transmission shafts 33 are arranged in the front and rear direction, transmission pulleys 35 are fixedly mounted on the transmission shafts 33, two adjacent transmission pulleys 35 are connected through a second transmission belt, two massage wheels 34 are mounted on each transmission shaft 33, and a plurality of salient points for massaging feet are protruded on the outer circumferential surface of each massage wheel 34; the power device 36 comprises a massage motor, a worm and a worm wheel, wherein the worm wheel is arranged on one of the transmission shafts 33, the massage motor is arranged on the bottom plate 31, the worm is arranged on the output end of the massage motor, and the worm wheel is meshed with the worm; the foot upper cover 32 is fixedly mounted on the bottom plate 31, the foot upper cover comprises three forward-protruding limiting portions, second accommodating grooves are formed in the bottoms of the limiting portions, third accommodating grooves 321 used for accommodating soles are formed between every two adjacent limiting portions, the two ends of the transmission shaft 33, the belt wheel and the power device are located in the second accommodating grooves, and part of the structure of the massage wheel is located in the third accommodating grooves 321. With the arrangement, the three transmission shafts 33 arranged in the front-back direction and provided with the massage wheels 34 can effectively massage important positions such as the front sole, the arch, the heel and the like of a user.

As shown in fig. 1, in the present embodiment, the leg massage assembly 2 includes a lower leg frame, an air bag, and an air pump, the lower leg frame 21 is mounted on the second-stage transverse tube 52 of the second-stage assembly 5, the lower leg frame 21 includes two first receiving grooves 22 recessed backward, the two first receiving grooves 22 are respectively used for placing a lower leg, the air bag is mounted inside the first receiving grooves 22, and the air bag is connected to the air pump through a connecting tube; in the process of massaging the lower legs, the lower legs are respectively placed in the two first containing grooves 22, and kneading massage is continuously carried out on the lower legs through inflation and deflation of the air bags.

Example 2

A chair including the leg massage device of embodiment 1, the base, the backrest, and the seat of the chair, and the like, which may be constructed as disclosed in patent documents CN202110179599X, CN112869447A, CN108158778A, and the like; in this embodiment, the leg massage device is hinged to the front end of the seat or frame of the chair via a suspension loop fixed to the cross beam.

Example 3

A massage method, using the chair of embodiment 2, comprising the steps of:

1) In the initial state, the leg massager and the foot massager are both positioned at the highest point of respective strokes;

2) Adjusting, namely, a user sits on a chair, the feet of the user are placed in the foot massage assembly 3, the telescopic motor 45 is started, the telescopic motor 45 drives the screw rod 46 to rotate, the screw rod 46 drives the leg massage assembly 2 and the foot massage assembly 3 to move downwards simultaneously, the downward moving speed of the foot massage assembly 3 is greater than the downward moving speed of the leg massage assembly 2, the legs of the user are gradually placed on the leg massage assembly 2, and after the leg massage assembly 2 and the foot massage assembly 3 move to required positions, the telescopic motor 45 stops;

3) Massaging, namely massaging the feet and the legs of the user through the leg massage assembly 2 and the foot massage assembly 3.

In the step 2), the user places feet in the third accommodating groove 321 of the foot massage assembly, the telescopic motor 45 and the screw rod 46 drive the secondary component 5 and the tertiary component 6 downwards, the secondary component 5 drives the leg massage assembly to slowly move downwards, and the tertiary component 6 drives the foot massage assembly 3 to rapidly move downwards; the user's lower legs gradually move to the first containing groove 22 of the leg massage assembly along with the feet, the user's lower legs gradually fit with the inner wall of the first containing groove 22, and the three groups of massage wheels arranged in front and back are respectively opposite to the front sole part, the arch part and the heel part of the user's sole; when the leg massage assembly and the foot massage assembly 3 are moved to the proper positions, the telescopic motor 45 stops rotating. In order to ensure stable operation of the telescopic frame, the telescopic motor 45 is also stopped when the stroke magnet is detected by the stroke detecting plate 47 located at the lowermost side or when the ground contact wheel contacts the ground. Further, when the ground contact wheel contacts with the ground, the ground contact bracket rotates around the first hinge shaft 76, the torsion spring 77 stores force, the ground contact bracket 74 drives the limiting piece 75 to rotate around the first hinge shaft 76, the limiting piece 75 contacts with the ground contact switch 72 in the rotating process, at this time, the leg massager can judge that the length of the telescopic frame reaches the maximum, and the telescopic motor 45 is turned off

In the step 3), the massage motor is started to drive one of the transmission shafts 33 to rotate, the transmission shaft 33 drives the other transmission shafts 33 to rotate through the second transmission belt and the transmission belt wheel 35, the transmission shaft 33 drives the massage wheel 34 to rotate, and the front sole part, the arch part and the heel part of the user are massaged through the convex point sections arranged on the massage wheel 34 when the massage wheel 34 rotates; the air pump is started, and when the air bag continuously carries out the actions of inflation and deflation, the air bag continuously carries out extrusion and kneading on the crus.

After the massage is finished and the user is separated from the leg massager, the massage motor stops running, the air pump stops running, the telescopic motor 45 drives the secondary component 5 and the tertiary component 6 to move upwards through the screw rod 46, the secondary component 5 drives the leg massage assembly 2 to move upwards, and the tertiary component 6 drives the foot massage assembly to move upwards until the resetting is finished.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the invention, and that those skilled in the art may make variations, modifications, substitutions and alterations herein without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a leg massager, includes the expansion bracket, installs leg massage assembly (2) on the expansion bracket and installs foot massage assembly (3) on the expansion bracket, its characterized in that: the massager further comprises a detection switch (7) used for preventing the expansion bracket from colliding with the ground, the detection switch (7) comprises a ground contact bracket (74), a ground contact switch (72) and a reset piece used for resetting the ground contact bracket, the ground contact bracket (74) is arranged at the bottom of the expansion bracket in a swinging mode, the ground contact bracket (74) can be in contact with the ground contact switch (72) after swinging, the ground contact switch (72) is fixedly connected with the expansion bracket, and the ground contact switch (72) is electrically connected with the expansion motor (45).

2. A leg massager as claimed in claim 1, wherein: the thread direction of the upper thread section (461) is the same as the thread direction of the lower thread section (462).

3. A leg massager as claimed in claim 1, wherein: the pitch of the upper threaded section (461) is less than the pitch of the lower threaded section (462).

4. A leg massager as claimed in claim 1, wherein: the lower threaded section (462) has a length greater than the length of the upper threaded section (461).

5. A leg massager according to claim 1, wherein: the expansion bracket comprises a first-stage component (4), a second-stage component (5) and a third-stage component (6), the first-stage component (4) is in sliding fit with the second-stage component (5), the second-stage component (5) is in sliding fit with the third-stage component (6), a telescopic motor (45) is installed on the first-stage component (4), the second-stage component (5) is in threaded connection with an upper threaded section (461) of a lead screw (46) through a second-stage lead screw nut (48), the third-stage component (6) is in threaded connection with a lower threaded section (462) of the lead screw (46) through a third-stage lead screw nut (49), a leg massage assembly (2) is installed on the second-stage component (5), and a foot massage assembly (3) is installed on the third-stage component (6).

6. A leg massager as claimed in claim 5, wherein: the massager comprises a detection device for detecting the position of the secondary component (5).

7. A leg massager as claimed in claim 6, wherein: the travel detection device comprises a travel detection plate (47) and a plurality of travel magnets (54), wherein the travel detection plates (47) are installed on a primary assembly (4), the heights of the positions of the travel detection plates (47) are different, the travel magnets (54) are installed on a secondary assembly (5), and the heights of the positions of the travel magnets (54) are different.

8. A leg massager as claimed in claim 5, wherein: the leg massage assembly (2) comprises a leg frame (21), an air bag and an air pump, wherein the leg frame (21) is installed on the secondary assembly (5), the leg frame (21) comprises two first containing grooves (22) which are recessed backwards, the two first containing grooves (22) are respectively used for containing legs, the air bag is installed on the inner side of each first containing groove (22), and the air bag is connected with the air pump through a connecting pipe.

9. A leg massager as claimed in claim 5, wherein: the foot massage assembly (3) comprises a bottom plate (31), three transmission shafts (33), a plurality of massage wheels (34), a foot upper cover (32) and a power device (36), wherein the bottom plate (31) is fixed on the tertiary component (6), the three transmission shafts (33) are rotatably installed on the bottom plate (31), the three transmission shafts (33) are arranged in the front-back direction, transmission belt wheels (35) are fixedly installed on the transmission shafts (33), two adjacent transmission belt wheels (35) are connected through a second transmission belt, two massage wheels (34) are installed on each transmission shaft (33), and a plurality of salient points for massaging feet are protruded on the outer circular surface of each massage wheel (34); the power device (36) comprises a massage motor, a worm and a worm wheel, the worm wheel is arranged on one of the transmission shafts (33), the massage motor is arranged on the bottom plate (31), the worm is arranged on the output end of the massage motor, and the worm wheel is meshed with the worm; the foot upper cover (32) is fixedly installed on the bottom plate (31), the foot upper cover comprises three forward-protruding limiting portions, second accommodating grooves are formed in the bottoms of the limiting portions, third accommodating grooves (321) used for accommodating soles are formed between every two adjacent limiting portions, the two ends of the transmission shaft (33), the belt wheel and the power device are located in the second accommodating grooves, and part of the structure of the massage wheel is located in the third accommodating grooves (321).

10. A chair, characterized in that: comprising a leg massager as claimed in any one of claims 1-9.

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