CN219250005U - Back rubbing machine - Google Patents

Abstract

The utility model discloses a back rubbing machine, which comprises: the device comprises a host, a swing arm assembly, a torsion mechanism and a gear shifting piece; the swing arm assembly can be arranged on the host in a swinging way, and a friction piece facing the back of a human body is rotationally arranged on the swing arm assembly; the torsion mechanism is arranged on the host machine and is used for linking the swing arm assembly, the torsion mechanism comprises a main torsion spring and an upshift torsion spring, and when the swing arm assembly rotates around the first time needle direction, the main torsion spring and the upshift torsion spring can generate torsion force acting on the swing arm assembly; the gear shifting piece is rotatably arranged on the host, and is used for driving the main torsion spring and the upshift torsion spring to jointly act on the swing arm assembly, or the gear shifting piece is used for driving the main torsion spring to independently act on the swing arm assembly. The back rubbing machine with the structure can enlarge the pressing movable space of the back, and can selectively operate the gear shifting part according to the requirement so as to adjust the back rubbing pressure of the friction part on a human body.

Description

Back rubbing machine

Technical Field

The utility model relates to the technical field of bathroom equipment, in particular to a back rubbing machine.

Background

For a long time, when people take a bath in a home or a hotel bathroom, the people often cannot rub the back of the people, especially the central position of the back, and the people are extremely difficult to complete the back rubbing work by themselves. Although some products for rubbing the back exist on the market at present, the pressure of the products for rubbing the back is not variable, the pressing movable space of the back is small, and the whole use experience is poor.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a back rubbing machine, which aims to realize that the back rubbing pressure can be adjusted and the pressing movable space of the back can be increased, and the use experience of products is improved.

According to an embodiment of the utility model, a back rubbing machine comprises: the device comprises a host, a swing arm assembly, a torsion mechanism and a gear shifting piece; the swing arm assembly can be arranged on the host in a swinging way, and a friction piece facing the back of a human body is rotationally arranged on the swing arm assembly; the torsion mechanism is arranged on the host machine and is used for linking the swing arm assembly, the torsion mechanism comprises a main torsion spring and an upshift torsion spring, and when the swing arm assembly rotates around the first time needle direction, the main torsion spring and the upshift torsion spring can generate torsion force acting on the swing arm assembly; the gear shifting piece is rotatably arranged on the host, and is used for driving the main torsion spring and the upshift torsion spring to jointly act on the swing arm assembly, or the gear shifting piece is used for driving the main torsion spring to independently act on the swing arm assembly.

The back rubbing machine provided by the embodiment of the utility model has at least the following beneficial effects: when the back rubbing device is used, the back of a human body is abutted against the friction piece to perform back rubbing operation, and in the process of swinging around the first time needle direction along with the stress of the swing arm assembly, the torsion forces of the main torsion spring and the shift-increasing torsion spring can be changed correspondingly along with the angle change of the swing arm assembly, so that the movable space for back pressing is enlarged, and people can conveniently select proper positions and pressures to perform back rubbing according to self experience. Wherein, set up the selector, be favorable to people to switch over the shelves torsional spring that adds selectively to make things convenient for people to initiatively reduce or increase the torsion size that acts on swing arm assembly, in order to improve the use experience of product.

In some embodiments of the present utility model, the torsion mechanism includes a main shaft, a fixed wheel, a shift-up wheel and a main wheel, where the main shaft is fixedly connected with the swing arm assembly, the fixed wheel is fixedly provided on the main shaft, the shift-up wheel can rotate relative to the main shaft, the main shaft can drive the main wheel to synchronously rotate around the first time needle direction, the main torsion spring is connected between the main wheel and the fixed wheel, the shift-up torsion spring is connected between the main wheel and the shift-up wheel, and when the main wheel rotates around the first time needle direction, the shift-up wheel has a first state clamped with the fixed wheel or a second state synchronously rotated with the main wheel, and the shift member can drive the shift-up wheel to switch between the first state and the second state.

In some embodiments of the present utility model, the upshift wheel is elastically connected with a first pawl portion, the first pawl portion can be folded or elastically unfolded by an external force, the fixed wheel is provided with a first bayonet portion, the first pawl portion cooperates with the first bayonet portion to enable the upshift wheel to be in the first state, and when the shift member rotates around the first time needle direction, the shift member can drive the first pawl portion to withdraw from the first bayonet portion so as to enable the upshift wheel to be switched to the second state.

In some embodiments of the present utility model, the swing arm assembly has an initial position and a shift position, the direction in which the swing arm assembly rotates from the shift position to the initial position is the first time needle direction, the direction in which the swing arm assembly rotates from the initial position to the shift position is the second time needle direction, the main machine is further provided with a limiting mechanism, the limiting mechanism includes a fixing piece and a driven wheel which are respectively sleeved on the main shaft, the fixing piece is fixedly arranged on the main machine, the driven wheel is fixedly connected with the main shaft, the driven wheel is elastically connected with a second detent part and a third detent part which face opposite directions, the second detent part and the third detent part can be folded or elastically unfolded by external force, the fixing piece is provided with a second detent part, the second detent part and the second detent part cooperate to enable the main shaft to stop rotating around the second time needle direction in the shift position, the main wheel is provided with a third detent part, and the third detent part cooperates with the third detent part to enable the main shaft to drive the main shaft to rotate around the first time needle direction synchronously.

In some embodiments of the present utility model, the main wheel is provided with two opposite fourth clamping portions, one end of the upshift wheel is provided with two opposite fifth clamping portions, a rotation space for accommodating the fourth clamping portions is formed between two adjacent fifth clamping portions, the main machine is provided with a fixing bracket, the other end of the upshift wheel is provided with two opposite ninth clamping portions, one side of the fixing bracket, which is close to the upshift wheel, is provided with two opposite sixth clamping portions, a rotation space for accommodating the ninth clamping portions is formed between two adjacent sixth clamping portions, during the rotation of the main wheel around the second clockwise direction, the fourth clamping portions are abutted to the fifth clamping portions, and the ninth clamping portions are abutted to the sixth clamping portions, so that the main wheel is stopped from rotating around the second clockwise direction to the gear shifting position.

In some embodiments of the present utility model, the limiting mechanism further includes a first return member, a second return member, and a switching torsion spring disposed on the spindle, the switching torsion spring is connected between the first return member and the second return member, the second return member is capable of synchronously rotating along with the spindle, the first return member is provided with a first locking portion, the fixing member is elastically connected with a first tongue locking portion that is always biased toward the inner side of the spindle, during the process of rotating the spindle from the initial position to the shift position around the second clockwise direction, the first locking portion is locked on the first tongue locking portion to limit the first return member to rotate around the second clockwise direction, the first return member is provided with a fourth locking portion, when the spindle rotates from the initial position to the shift position around the second clockwise direction, the second pawl is locked in the second locking portion and the fourth locking portion, during the process of rotating the spindle from the initial position to the shift position around the second clockwise direction, the second pawl is provided with a second tongue locking portion, and the second pawl is elastically locked in the second tongue locking portion is rotated around the first torsion spring around the first clockwise direction.

In some embodiments of the present utility model, the limiting mechanism further includes a driving member fixedly connected to the driven wheel to rotate synchronously with the driven wheel, the driving member is elastically connected to a second tongue clamping portion that is always biased toward the inner side of the main shaft, the second return member is provided with a second clamping portion that is clamped with the second tongue clamping portion, the second return member is provided with a fifth clamping portion, when the main shaft rotates from the initial position around the second clockwise direction to the shift position, the third pawl portion is clamped in the third clamping portion and the fifth clamping portion, the main wheel is provided with a third clamping portion, and when the main shaft rotates around the second clockwise direction beyond the shift position, the third clamping portion pushes the second tongue clamping portion to disengage from the second clamping portion, so that the second return member rotates around the first clockwise direction under the elastic force of the switching torsion spring and folds the third pawl portion.

In some embodiments of the present utility model, the main machine is further provided with a reset mechanism, the reset mechanism includes a reset wheel and a reset torsion spring, the reset wheel is fixedly connected to the main shaft to synchronously rotate along with the main shaft, the reset torsion spring is connected between the main wheel and the reset wheel, and after the main shaft rotates around the second clockwise direction and passes through the gear shift position, the reset torsion spring resets to drive the main shaft to reset to the initial position around the first time needle direction.

In some embodiments of the present utility model, the swing arm assembly includes a swing arm plate, a first motor, a rotating assembly and a fixing bracket, wherein the swing arm plate is fixedly connected with the main shaft to drive the main shaft to rotate synchronously, the first motor is connected with the friction piece through the rotating assembly to drive the friction piece to rotate, the fixing bracket is fixedly arranged on the host, the rotating assembly is rotationally arranged on the swing arm plate, a parallelogram linkage mechanism is connected between the fixing bracket and the rotating assembly, and in the swing process of the swing arm plate, the parallelogram linkage mechanism links the rotating assembly, so that the rotating assembly can drive the friction piece to deflect to be always opposite to the back of a human body.

In some embodiments of the present utility model, the friction member includes a rotating member, a housing, and an elastic member, the housing is provided with a back rubbing portion facing the back of the human body, the rotating member is connected to the rotating member, the elastic member is connected between the rotating member and the housing, and a guiding and limiting assembly is provided between the rotating member and the housing, and the guiding and limiting assembly is used for guiding the housing to force to reciprocate along the axial direction of the rotating member.

In some embodiments of the present utility model, the back rubbing machine further includes a fixing frame, a wireless charger is disposed at a top of the fixing frame, a lifting mechanism is disposed between the host machine and the fixing frame, the lifting mechanism includes a second motor, a wire wheel and a wire rope, the wire wheel is rotatably disposed on the host machine, and the second motor drives the wire wheel to wind or unwind the wire rope to drive the host machine to move up and down to rub the back or be close to the wireless charger.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of an embodiment of a back rubbing machine according to the present utility model;

FIG. 2 is a schematic diagram of the internal structure of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 2 with parts removed;

FIG. 4 is an exploded view of the torsion mechanism, the spacing mechanism, and the return mechanism of FIG. 3;

FIG. 5 is an exploded view of the torsion mechanism, the stop mechanism, and the reset mechanism of FIG. 3 from another perspective;

FIG. 6 is an exploded view of the main wheel, upshift wheel and fixed bracket of FIG. 4;

FIG. 7 is a schematic view of a part of the torsion mechanism, the limiting mechanism and the return mechanism in FIG. 3;

FIG. 8 is a schematic view of a portion of the structure from another perspective of FIG. 7;

FIG. 9 is a partial schematic view of the part of FIG. 7 with portions removed;

FIG. 10 is an exploded view of the swing arm assembly of FIG. 3;

fig. 11 is a schematic partial structure of the rotating assembly and the swing arm assembly in fig. 10.

In the figure: the main body 100, the adjusting knob 101, the display screen 102, the first mounting bracket 110, the second mounting bracket 120, the swing arm assembly 200, the friction member 210, the rotation member 211, the latch 2111, the housing 212, the elastic member 213, the back rubbing portion 214, the swing arm plate 220, the housing 221, the first motor 230, the rotation member 240, the rotation frame 241, the output shaft 242, the fixing bracket 250, the sixth click portion 251, the first link 260, the movable lever 270, the second link 280, the belt transmission mechanism 290, the torsion mechanism 300, the main torsion spring 301, the upshift torsion spring 302, the main shaft 310, the fixed wheel 320, the first click portion 321, the upshift wheel 330, the first click portion 331, the fifth click portion 332, the ninth click portion 333, the main wheel 340, the first click portion 341, the third click portion 342, the second detent portion 343, the third detent portion 344, the fourth detent portion 345, the shift member 400, the rotating portion 410, the upshift ring portion 420, the driving block 421, the fixing member 500, the second detent portion 501, the first tongue detent portion 502, the first return member 510, the first detent portion 511, the fourth detent portion 512, the seventh detent portion 513, the driven pulley 520, the second detent portion 521, the third detent portion 522, the second return member 530, the second detent portion 531, the fifth detent portion 532, the switching torsion spring 540, the driving member 550, the second tongue detent portion 551, the eighth detent portion 552, the return pulley 600, the return torsion spring 610, the fixing frame 700, the guide lever 701, the wireless charger 710, the elevating mechanism 800, the second motor 810, the wire pulley 820, the wire rope 830.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 10, a back rubbing machine includes: the main machine 100, the swing arm assembly 200, the torsion mechanism 300, and the shifter 400; the swing arm assembly 200 can be arranged on the host 100 in a swinging way, and the swing arm assembly 200 is rotatably provided with a friction piece 210 facing the back of a human body; the torsion mechanism 300 is arranged on the host 100 and connected with the swing arm assembly 200 in parallel, the torsion mechanism 300 comprises a main torsion spring 301 and an upshift torsion spring 302, and when the swing arm assembly 200 rotates around the first time needle direction, the main torsion spring 301 and the upshift torsion spring 302 can generate torsion force acting on the swing arm assembly 200; the shifting member 400 is rotatably provided on the main machine 100, and the shifting member 400 is used for driving the main torsion spring 301 and the upshifting torsion spring 302 to act on the swing arm assembly 200 together, or the shifting member 400 drives the main torsion spring 301 to act on the swing arm assembly 200 alone.

The back rubbing machine with the structure above is characterized in that when in use, the back of a human body is abutted against the friction piece 210 to perform back rubbing operation, and the torsion forces of the main torsion spring 301 and the shift-increasing torsion spring 302 can be correspondingly changed along with the angle change of the swing arm assembly 200 in the process that the swing arm assembly 200 is forced to swing around the first time needle direction, so that the back pressing movable space is enlarged, and people can conveniently select proper positions and pressures to rub back according to self experience. The gear shifting member 400 is beneficial to people to selectively switch the upshift torsion spring 302, so that the torque force acting on the swing arm assembly 200 is reduced or increased actively by people, and the use experience of products is improved.

Referring to fig. 2 to 5, in some embodiments of the present utility model, the torsion mechanism 300 includes a main shaft 310, a fixed wheel 320, an upshift wheel 330, and a main wheel 340, the main shaft 310 is fixedly connected with the swing arm assembly 200, the fixed wheel 320 is fixedly disposed on the main machine 100, the upshift wheel 330 is rotatable relative to the main shaft 310, the main shaft 310 can drive the main wheel 340 to synchronously rotate around a first time axis direction, the main torsion spring 301 is connected between the main wheel 340 and the fixed wheel 320, the upshift torsion spring 302 is connected between the main wheel 340 and the upshift wheel 330, when the main wheel 340 rotates around the first time axis direction, the upshift wheel 330 has a first state clamped with the fixed wheel 320 or a second state synchronously rotated with the main wheel 340, and the shift member 400 can drive the upshift wheel 330 to switch between the first state and the second state.

Specifically, when the upshift wheel 330 is in the first state of being clamped with the fixed wheel 320, the main wheel 340 rotates around the first time pin direction to drive the main torsion spring 301 and the upshift torsion spring 302 to rotate, so that the main torsion spring 301 and the upshift torsion spring 302 can jointly generate a torsion force limiting the rotation of the main shaft 310, and further the swing arm assembly 200 can generate a pressure applied to the back of a person. When the gear shifting member 400 is switched to the upshift wheel 330 in the second state, the upshift wheel 330 can rotate correspondingly along with the main wheel 340, so that the torque force of the upshift wheel 330 acting on the main shaft 310 is ineffective, and the pressure applied by the swing arm assembly 200 to the back of the person is reduced. It will be appreciated that the host 100 includes a first mounting bracket 110, and the fixed sheave 320 is bolted to the first mounting bracket 110.

Referring to fig. 2 to 5, in some embodiments of the present utility model, the upshift wheel 330 is elastically connected with a first pawl portion 331, the first pawl portion 331 is foldable or elastically expandable by an external force, the fixed wheel 320 is provided with a first detent portion 321, the first pawl portion 331 cooperates with the first detent portion 321 to enable the upshift wheel 330 to be in a first state, and when the shift member 400 rotates around a first time needle direction, the shift member 400 can drive the first pawl portion 331 to withdraw from the first detent portion 321 to enable the upshift wheel 330 to be switched to a second state.

Specifically, the shift member 400 includes a rotating portion 410 and an upshift ring portion 420, wherein the rotating portion 410 is exposed to the main machine 100 so that people can operate the shift member 400, and the upshift ring portion 420 is provided with a driving block 421 capable of forcing and folding the first pawl portion 331 around the first time pin direction. When the upshift wheel 330 is in the first state, the positions of the driving block 421 and the first clamping portion 321 are axially staggered along the main shaft 310, and the first pawl portion 331 is elastically opened and clamped to the first clamping portion 321, so that one end of the upshift torsion spring 302 is fixed, and a corresponding torsion force can be generated by the subsequent upshift torsion spring 302 under the rotation of the main wheel 340. When the shift member 400 rotates around the first time needle direction, the positions of the driving block 421 and the first locking portion 321 axially overlap along the main shaft 310, so that the outer side of the first pawl portion 331 is pressed by the inner wall of the driving block 421 to fold, and the first pawl portion 331 can be separated from the first locking portion 321, so that the upshift wheel 330 is switched to a second state capable of following the movement of the main wheel 340, and further the torque force of the upshift torsion spring 302 is disabled. When the driving block 421 and the first locking portion 321 axially overlap along the spindle 310, the first pawl portion 331 is in a folded state; when the positions of the driving block 421 and the first engagement portion 321 are displaced in the axial direction of the spindle 310, the first detent portion 331 is in an open state.

Referring to fig. 2 to 5, in some embodiments of the present utility model, the swing arm assembly 200 has an initial position and a shift position, the direction in which the swing arm assembly 200 rotates from the shift position to the initial position is a first time needle direction, the direction in which the swing arm assembly 200 rotates from the initial position to the shift position is a second time needle direction, the main machine 100 is further provided with a limiting mechanism, the limiting mechanism includes a fixing member 500 and a driven member 520 respectively sleeved on the main shaft 310, the fixing member 500 is fixedly arranged on the main machine 100, the driven member 520 is fixedly connected with the main shaft 310, the driven member 520 is elastically connected with a second pawl 521 and a third pawl 522 which face opposite directions, the second pawl 521 and the third pawl 522 can be folded or elastically unfolded by an external force, the fixing member 500 is provided with a second detent 501, the second pawl 521 and the second detent 501 cooperate to enable the main shaft 310 to rotate from the initial position around the second time needle direction to the shift position, the main wheel 340 is provided with a third detent 342, and the third pawl 522 cooperates with the third detent 342 to enable the main shaft 310 to rotate synchronously around the first time needle direction.

Specifically, when one swings the swing arm assembly 200 from the initial position to the shift position about the second clockwise direction, the second pawl portion 521 elastically expands and snaps into the second snap portion 501, such that the main shaft 310 is stopped at the shift position. At this time, the swing arm assembly 200 enters a rubbing working state, and then, according to the requirement of the user, the user can select whether to add the torque force of the upshifting torsion spring 302, and then, the back of the user abuts against the friction member 210, so that the main shaft 310 rotates around the first time needle direction, and the third pawl 522 is clamped at the third clamping portion 342, so that the main shaft 310 drives the main wheel 340 to rotate synchronously, and further, the swing arm assembly 200 is in a working state of applying force to the back of the user. It will be appreciated that the bathroom wall to which the main unit 100 is mounted is referred to, the initial position is a 0 degree angular position of the swing arm assembly 200 parallel to the wall, and the shift position is a maximum angular position of the swing arm assembly 200 from the wall to a distance away from the wall. In addition, the host 100 further includes a second mounting frame 120, where the second mounting frame 120 is provided with a bayonet slot, and the fixing member 500 is provided with a clamping strip portion clamped with the bayonet slot, and the clamping strip portion is clamped in the bayonet slot to limit rotation of the fixing member 500.

Referring to fig. 6, in some embodiments of the present utility model, the main wheel 340 is provided with two opposite fourth clamping portions 345, one end of the upshift wheel 330 is provided with two opposite fifth clamping portions 332, a rotation space accommodating the fourth clamping portions 345 is formed between two adjacent fifth clamping portions 332, the main machine 100 is provided with a fixing bracket 250, the other end of the upshift wheel 330 is provided with two opposite ninth clamping portions 333, one side of the fixing bracket 250 near the upshift wheel 330 is provided with two opposite sixth clamping portions 251, a rotation space accommodating the ninth clamping portions 333 is formed between two adjacent sixth clamping portions 251, during rotation of the main wheel 340 around the second clockwise direction, the fourth clamping portions 345 abut against the fifth clamping portions 332, and the ninth clamping portions 333 abut against the sixth clamping portions 251, so that the main wheel 340 is stopped rotating around the second clockwise direction to the shift position. It should be noted that the main wheel 340 always has a torsion force around the second clockwise direction by the action of the main torsion spring 301 and the upshift torsion spring 302.

Referring to fig. 2 to 9, in some embodiments of the present utility model, the limiting mechanism further includes a first return member 510, a second return member 530 and a switching torsion spring 540 disposed on the main shaft 310, the switching torsion spring 540 is connected between the first return member 510 and the second return member 530, the second return member 530 can synchronously rotate along with the main shaft 310, the first return member 510 is provided with a first clamping portion 511, the fixing member 500 is elastically connected with a first tongue clamping portion 502 that is always biased towards the inner side of the main shaft 310, during the process of rotating the main shaft 310 from the initial position around the second clockwise direction to the shift position, the first clamping portion 511 is clamped to the first tongue clamping portion 502 to limit the first return member 510 to rotate around the second clockwise direction, the first return member 510 is provided with a fourth clamping portion 512, when the main shaft 310 rotates from the initial position around the second clockwise direction to the shift position, the main shaft 340 is provided with a second clamping portion 521 clamped to the second clamping portion 501, during the process of rotating the main shaft 340 from the initial position around the first clockwise direction to the shift position around the first clamping portion 343, and the second tongue clamping portion is pushed to disengage the first torsion spring 343 from the first clamping portion 521 around the first return direction to the first clockwise direction, thereby releasing the first torsion spring 521 from the first return member rotating around the first clockwise direction.

Specifically, when the swing arm assembly 200 is at the initial position, the main wheel 340 is provided with a first clamping portion 341, the first clamping portion 511 is located between the first clamping portion 341 and the first tongue clamping portion 502, the first tongue clamping portion 502 and the first clamping portion 511 are in a clamped state, and the positions of the fourth clamping portion 512 and the second clamping portion 501 axially overlap along the spindle 310. In the process that the main shaft 310 rotates from the initial position around the second clockwise direction to the gear shifting position, the first tongue clamping portion 502 is clamped to the first clamping portion 511 to limit the first return member 510 to rotate around the second clockwise direction, and the second return member 530 follows the main shaft 310 to rotate so that the switching torsion spring 540 generates corresponding elastic potential energy. Subsequently, when the main shaft 310 is rotated to the shift position, the positions of the second and fourth click portions 501 and 512 still overlap in the axial direction of the main shaft 310, and the second pawl portion 521 is elastically expanded to click in the second and fourth click portions 501 and 512, thereby restricting the main shaft 310 from rotating around the second clockwise direction to be stopped at the shift position. When the main shaft 310 rotates around the first time needle direction from the shift position, the main wheel 340 rotates to enable the second clamping portion 343 to push the first tongue clamping portion 502 to be separated from the first clamping portion 511, so that the first return member 510 rotates around the second time needle direction under the elastic action of the switching torsion spring 540, and further the positions of the fourth clamping portion 512 and the second clamping portion 501 are axially displaced along the main shaft 310, so that the outer side of the second pawl portion 521 is folded by the pressing of the inner wall of the first return member 510, and finally the second pawl portion 521 loses the capability of clamping the second clamping portion 501, so that the limitation of the main shaft 310 rotating around the second time needle direction by the maximum angle to the shift position is relieved. It can be understood that the rotating path of the second locking portion 343 is offset from the rotating path of the first locking portion 511, and the second locking portion 343 can push the first tongue locking portion 502 away from the inner side of the first tongue locking portion 502. When the positions of the second engaging portion 501 and the fourth engaging portion 512 are displaced in the axial direction of the spindle 310, the second pawl portion 521 is in a folded state; when the positions of the second engagement portion 501 and the fourth engagement portion 512 overlap in the axial direction of the spindle 310, the second pawl portion 521 is in an open state.

Referring to fig. 2 to 7 and 9, in some embodiments of the present utility model, the limiting mechanism further includes a driving member 550, the driving member 550 is fixedly connected to the driven wheel 520 to rotate synchronously with the driven wheel 520, the driving member 550 is elastically connected to a second tongue clamping portion 551 that is always biased towards the inner side of the main shaft 310, the second return member 530 is provided with a second clamping portion 531 that is clamped with the second tongue clamping portion 551, the second return member 530 is provided with a fifth clamping portion 532, when the main shaft 310 rotates from the initial position around the second clockwise direction to the shift position, the third pawl portion 522 is clamped in the third clamping portion 342 and the fifth clamping portion 532, the main wheel 340 is provided with a third clamping portion 344, and when the main shaft 310 rotates around the second clockwise direction beyond the shift position, the third clamping portion 344 pushes the second tongue clamping portion 551 to disengage from the second clamping portion 531, so that the second return member 530 rotates around the first time needle direction under the elastic force of the switching torsion spring 540 and folds the third pawl portion 522.

Specifically, in the initial position, the second tongue locking portion 551 and the second locking portion 531 are locked, the positions of the fifth locking portion 532 and the third locking portion 342 are shifted in the axial direction of the spindle 310, and the outer side of the third pawl portion 522 is pressed by the inner wall of the main wheel 340 and is in a folded state. In the process that the main shaft 310 rotates from the initial position around the second clockwise direction to the gear shift position, the second tongue clamping portion 551 is clamped to the second clamping portion 531, so as to drive the second return member 530 to rotate around the second clockwise direction along with the main shaft 310. When the main shaft 310 drives the second return member 530 to rotate to the shift position, the positions of the fifth clamping portion 532 and the third clamping portion 342 overlap along the axial direction of the main shaft 310, and the third pawl portion 522 is elastically opened to be clamped in the third clamping portion 342 and the fifth clamping portion 532, so that the main shaft 310 drives the main wheel 340 to synchronously rotate around the first time needle direction, and the swing arm assembly 200 enters the back rubbing working state. When people drive the swing arm assembly 200 to rotate around the second clockwise again and pass over the gear shift position after people finish back rubbing, the third clamping part 344 pushes the second tongue clamping part 551 to separate from the second clamping part 531, so that the second return member 530 rotates around the first time needle direction to return to the initial position under the elastic action of the switching torsion spring 540, so that the positions of the third clamping part 342 and the fifth clamping part 532 are axially misplaced along the main shaft 310, the outer side of the third clamping part 522 is folded by the inner wall of the second return member 530, so that the third clamping part 342 is lost by the third clamping part 522, the main wheel 340 loses the capability of synchronously rotating around the first time needle direction with the main shaft 310, and the torsion forces of the main torsion spring 301 and the upshifting torsion spring 302 are lost. It can be appreciated that the rotating path of the second locking portion 531 and the mounting position of the third locking portion 344 are staggered, so that the second return member 530 can be quickly reset to press the third pawl portion 522 after releasing the limit. Wherein, the first tongue clamping portion 502 and the second tongue clamping portion 551 are connected by a torsion spring to always apply force towards the inner side of the spindle 310. When the positions of the fifth detent portion 532 and the third detent portion 342 are displaced in the axial direction of the spindle 310, the third detent portion 522 is in a collapsed state; when the positions of the fifth detent portion 532 and the third detent portion 342 overlap in the axial direction of the main shaft 310, the third detent portion 522 is in an open state.

Referring to fig. 2 to 9, in some embodiments of the present utility model, the main machine 100 is further provided with a reset mechanism including a reset wheel 600 and a reset torsion spring 610, the reset wheel 600 is fixedly connected to the main shaft 310 to rotate synchronously with the main shaft 310, the reset torsion spring 610 is connected between the main wheel 340 and the reset wheel 600, and after the main shaft 310 rotates around the second clockwise direction beyond the shift position, the reset torsion spring 610 resets to drive the main shaft 310 to reset to the initial position around the first time needle direction.

Specifically, in the initial position, the main wheel 340 is stopped at the shift position by the torsion forces of the main torsion spring 301 and the upshift torsion spring 302, thereby achieving an initial state in which it does not rotate relative to the main shaft 310. When the spindle 310 rotates from the initial position around the second clockwise direction, the return wheel 600 follows the spindle 310 to rotate, so that the return torsion spring 610 can generate corresponding elastic potential energy. When the spindle 310 can go beyond the gear shifting position, the third clamping portion 344 pushes the second tongue clamping portion 551 to separate from the second clamping portion 531, so that the second return member 530 rotates around the first time needle direction to return to the initial position under the elastic action of the switching torsion spring 540, so that the positions of the fifth clamping portion 532 and the third clamping portion 342 are axially displaced along the spindle 310, the outer side of the third pawl portion 522 is pressed and folded by the inner wall of the second return member 530, so that the third pawl portion 522 loses the capability of clamping the third clamping portion 342, the torsion forces of the main torsion spring 301 and the upshifting torsion spring 302 drive the main wheel 340 to return to the initial state, and the main wheel 340 and the spindle 310 separate from the synchronous rotation state, and under the elastic action of the return torsion spring 610, the spindle 310 drives the swing arm assembly 200 to return to the initial position around the first time needle direction, thereby achieving the effect of automatically folding the swing arm assembly 200 after the back is completed. It will be appreciated that the return torsion spring 610 is not active if the main wheel 340 and return wheel 600 are rotated in unison.

Referring to fig. 4 to 9, in some embodiments of the present utility model, the first return member 510 is provided with a seventh detent portion 513, and the driving member 550 is provided with an eighth detent portion 552 that is snapped into engagement with the seventh detent portion 513. When the main shaft 310 rotates around the first clockwise direction from the shift position, the main wheel 340 rotates to enable the second clamping portion 343 to push the first tongue clamping portion 502 to be separated from the first clamping portion 511, so that the first return member 510 rotates around the second clockwise direction under the elastic action of the switching torsion spring 540, and the seventh clamping portion 513 is clamped to the eighth clamping portion 552. In the process of automatically folding the swing arm assembly 200 to the initial position, the main wheel 340 returns to the initial position under the torsion of the main torsion spring 301 and the upshift torsion spring 302, and the eighth clamping portion 552 is clamped to the seventh clamping portion 513, so that the driving member 550 drives the first return member 510 to rotate around the first time needle direction to return to the initial position.

It will be appreciated that if the first time needle direction is counterclockwise and the second time needle direction is clockwise, and the side near the return wheel 600 is right, the main torsion spring 301 and the upshift torsion spring 302 are both right-hand and left-hand movable and fixed during the torsion generation, and both right-hand torsion springs are used to provide the torsion force for driving the swing arm assembly 200 to rotate clockwise. Similarly, the return torsion spring 610 is movable at the right end and relatively fixed at the left end during the torsion generation process, and a left torsion spring is used to provide a torsion force for driving the swing arm assembly 200 to rotate in a counterclockwise direction. And the switching torsion spring 540 adopts a right-hand torsion spring, the right end of the right-hand torsion spring is connected with the first return member 510, and the left end of the right-hand torsion spring is connected with the second return member 530. Specifically, in the process of rotating the swing arm assembly 200 clockwise from the initial position to the shift position, the first return member 510 is relatively fixed and the second return member 530 follows the spindle 310 to rotate so as to store the force of the switching torsion spring 540, then, after the swing arm assembly 200 rotates counterclockwise to enter the working state, the first return member 510 releases the fixed state and rotates clockwise under the action of the switching torsion spring 540 to release the limitation of the spindle 310 to rotate the maximum angle to the shift position, and the seventh clamping portion 513 rotates clockwise to a state of clamping with the eighth clamping portion 552, finally, after back rubbing is completed, the swing arm assembly 200 rotates clockwise again to pass through the shift position, the second return member 530 is separated from the state of synchronously rotating with the spindle 310, and rotates counterclockwise to reset under the action of the switching torsion spring 540 to release the state of synchronously rotating the main wheel 340 and the spindle 310, so that the swing arm assembly 200 is reset to the initial position under the action of the switching torsion spring 610, and the eighth clamping portion 552 clamps with the seventh clamping portion 513 to clamp so that the driving member 550 drives the first return member 510 to rotate counterclockwise around the initial position.

Referring to fig. 1 to 3, 10 and 11, in some embodiments of the present utility model, the swing arm assembly 200 includes a swing arm plate 220, a first motor 230, a rotating assembly 240 and a fixing bracket 250, the swing arm plate 220 is fixedly connected with a main shaft 310 to drive the main shaft 310 to rotate synchronously, the first motor 230 is connected with a friction member 210 through the rotating assembly 240 to drive the friction member 210 to rotate, the fixing bracket 250 is fixedly arranged on the host 100, the rotating assembly 240 is rotatably arranged on the swing arm plate 220, a parallelogram linkage mechanism is connected between the fixing bracket 250 and the rotating assembly 240, and the parallelogram linkage mechanism links the rotating assembly 240 in the swinging process of the swing arm plate 220, so that the rotating assembly 240 can drive the friction member 210 to deflect always right against the back of a human body.

Specifically, the swing arm plate 220 is fixedly connected with a housing 221, the housing 221 is rotatably provided with a first bevel gear and a second bevel gear, a rotating shaft of the first motor 230 is connected with the second bevel gear through a belt transmission mechanism 290, and the first bevel gear and the second bevel gear are in 90-degree angle meshing transmission so as to realize the conversion of the 90-degree angle of the transmission power. The rotating assembly 240 comprises a rotating frame 241, a universal joint shaft and an output shaft 242, the output shaft 242 is rotatably arranged on the rotating frame 241, one end of the universal joint shaft is connected with the first bevel gear, the other end of the universal joint is connected with the output shaft 242, and the output shaft 242 is connected with the friction piece 210 to drive the friction piece 210 to rotate. When people swing the swing arm assembly 200, the parallelogram linkage rotates the assembly 240 to deflect, so that the rotating frame 241 drives the output shaft 242 to deflect, and accordingly the friction piece 210 is driven to deflect, and further the friction piece 210 can automatically face the back of a human body in a state parallel to a wall at any position, so that the use experience of people is improved. Wherein the universal joint shaft is capable of ensuring power transmission between the first bevel gear and the output shaft 242 after deflection of the output shaft 242. It can be understood that the parallelogram linkage mechanism includes a movable rod 270 and two equal-length and parallel first links 260, the movable rod 270 is rotatably disposed on the swing arm plate 220, one end of the first links 260 is rotatably connected to the fixed bracket 250, the other end of the first links 260 is rotatably connected to the movable rod 270, and the connection points of the fixed bracket 250, the two first links 260 and the movable rod 270 together form a parallelogram. Similarly, two second connecting rods 280 with equal length and arranged in parallel are arranged between the rotating frame 241 and the movable rod 270, one end of each second connecting rod 280 is connected with the movable rod 270, the other end of each second connecting rod 280 is connected with the rotating frame 241, and the connecting points among the rotating frame 241, the movable rod 270 and the second connecting rods 280 jointly form another parallelogram connecting rod mechanism.

Referring to fig. 10, in some embodiments of the present utility model, the friction member 210 includes a rotating member 211, a housing 212, and an elastic member 213, the housing 212 is provided with a back rubbing portion 214 facing the back of the person, the rotating member 240 is connected to the rotating member 211, the elastic member 213 is connected between the rotating member 211 and the housing 212, and a guiding and limiting assembly is provided between the rotating member 211 and the housing 212, and is used for guiding the housing 212 to reciprocate along the axial direction of the rotating member 211 under the force.

Specifically, the guiding limiting assembly includes a plurality of clamping blocks 2111 and inserting grooves which are matched with each other in a clamping manner, the clamping blocks 2111 are circumferentially distributed along the outer circumferential wall of the rotating member 211, the inserting grooves are axially extended along the rotating member 211, and the clamping blocks 2111 and inserting grooves are matched with each other, so that the rotating member 211 can drive the housing 212 to rotate on one hand, and the housing 212 can reciprocate along the axial direction of the rotating member 221 on the other hand. When the rubbing back 214 encounters different concave-convex surfaces of the back of the person, the elastic member 213 is arranged to enable the rubbing back 214 to be stressed to generate corresponding compression, so that the rubbing back is better attached to the back of the person to improve the use experience.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the back rubbing machine further includes a fixing frame 700, a wireless charger 710 is disposed at the top of the fixing frame 700, a lifting mechanism 800 is disposed between the host machine 100 and the fixing frame 700, the lifting mechanism 800 includes a second motor 810, a wire wheel 820 and a wire rope 830, the wire wheel 820 is rotatably disposed on the host machine 100, and the second motor 810 drives the wire wheel 820 to wind or unwind the wire rope 830 to drive the host machine 100 to move up and down to rub the back or approach or wireless charger 710.

Specifically, the second motor 810 is electrically connected to a controller, and a battery matched with the wireless charger 710 is disposed inside the host 100. When the battery is low, the controller controls the second motor 810 to operate to drive the host 100 to rise, so as to charge the battery inside the host 100 near the wireless charger 710. When the swing arm assembly 200 is in the back rolling operation, the host 100 provides a sealed working environment for the storage battery, and the storage battery as the only power supply is not electrically connected with the outside, so that the danger of electric shock of a user is avoided. It will be appreciated that the fixing frame 700 includes two guide bars 701 extending in a vertical direction, and the main body 100 slides on the guide bars 701 in the vertical direction.

In some embodiments, an external socket is provided at the bottom of the host 100, which may serve as an emergency charging port for the battery, and may also be connected to a handheld controller to adjust the height of the host 100. The side wall of the host 100 is provided with an adjusting knob 101, and the adjusting knob 101 is electrically connected with the controller, so that the working parameters of the host 100 are set or the height of the host 100 is adjusted through the adjusting knob 101, and in addition, a display screen 102 is arranged outside the host 100, so that relevant contents such as the electric quantity of the host 100 are displayed in real time through the display screen 102.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A back rubbing machine, comprising:

a host (100);

the swing arm assembly (200) can be arranged on the host machine (100) in a swinging mode, and a friction piece (210) facing the back of a human body is rotatably arranged on the swing arm assembly (200);

the torsion mechanism (300) is arranged on the host machine (100) and is used for linking the swing arm assembly (200), the torsion mechanism (300) comprises a main torsion spring (301) and a gear-increasing torsion spring (302), and when the swing arm assembly (200) rotates around a first time needle direction, the main torsion spring (301) and the gear-increasing torsion spring (302) can generate torsion force acting on the swing arm assembly (200);

And the gear shifting piece (400) is rotatably arranged on the host machine (100), and the gear shifting piece (400) is used for driving the main torsion spring (301) and the upshift torsion spring (302) to act on the swing arm assembly (200) together, or the gear shifting piece (400) is used for driving the main torsion spring (301) to act on the swing arm assembly (200) independently.

2. A back rubbing machine according to claim 1, wherein:

the torque mechanism (300) comprises a main shaft (310), a fixed wheel (320), a gear-adding wheel (330) and a main wheel (340), wherein the main shaft (310) is fixedly connected with the swing arm assembly (200), the fixed wheel (320) is fixedly arranged on the main machine (100), the gear-adding wheel (330) can rotate relative to the main shaft (310), the main shaft (310) can drive the main wheel (340) to synchronously rotate around a first time needle direction, the main torsion spring (301) is connected between the main wheel (340) and the fixed wheel (320), the gear-adding torsion spring (302) is connected between the main wheel (340) and the gear-adding wheel (330), when the main wheel (340) rotates around the first time needle direction, the gear-adding wheel (330) has a first state clamped with the fixed wheel (320) or a second state synchronously rotated with the main wheel (340), and the member (400) can drive the gear-adding wheel (330) to be in between the first state and the second state.

3. A back rubbing machine according to claim 2, wherein:

the gear shifting wheel (330) is elastically connected with a first pawl part (331), the first pawl part (331) can be folded or elastically unfolded by external force, the fixed wheel (320) is provided with a first clamping part (321), the first pawl part (331) is matched with the first clamping part (321) so that the gear shifting wheel (330) is in the first state, and when the gear shifting piece (400) rotates around the first time needle direction, the gear shifting piece (400) can drive the first pawl part (331) to withdraw from the first clamping part (321), so that the gear shifting wheel (330) is switched to the second state.

4. A back rubbing machine according to claim 2, wherein:

the swing arm assembly (200) is provided with an initial position and a gear shifting position, the direction of the swing arm assembly (200) from the gear shifting position to the initial position is the first time needle direction, the direction of the swing arm assembly (200) from the initial position to the gear shifting position is the second time needle direction, the main machine (100) is further provided with a limiting mechanism, the limiting mechanism comprises a fixing piece (500) and a driven wheel (520) which are respectively sleeved on the main shaft (310), the fixing piece (500) is fixedly arranged on the main machine (100), the driven wheel (520) is fixedly connected with the main shaft (310), the driven wheel (520) is elastically connected with a second detent part (521) and a third detent part (522) which face opposite directions, the second detent part (521) and the third detent part (522) can be opened by external force or elasticity, the fixing piece (500) is provided with a second detent part (501), the second detent part (521) is matched with the second detent part (501) so that the main shaft (310) can rotate around the main shaft (340) in the third time needle shifting direction (342) to enable the main shaft (340) to rotate around the main shaft (340).

5. A back rubbing machine according to claim 4, wherein:

the limiting mechanism further comprises a first return member (510), a second return member (530) and a switching torsion spring (540) which are arranged on the main shaft (310), the switching torsion spring (540) is connected between the first return member (510) and the second return member (530), the second return member (530) can synchronously rotate along with the main shaft (310), the first return member (510) is provided with a first clamping part (511), the fixing member (500) is elastically connected with a first tongue clamping part (502) which always applies force to the inner side of the main shaft (310), the first clamping part (511) is clamped with the first tongue clamping part (502) to limit the rotation of the first return member (510) around the second clockwise direction in the process of rotating the main shaft (310) around the second clockwise direction from the initial position to the shifting position, the first return member (510) is provided with a fourth clamping part (512), the main shaft (310) is elastically connected with a first tongue clamping part (502) which always applies force to the inner side of the main shaft (310), the main shaft (310) rotates around the second clockwise direction from the second clamping part (340) to the first clamping part (340) in the first clockwise direction, the second clamping part (521) rotates around the second clockwise direction from the initial position, the second clamping portion (343) pushes the first tongue clamping portion (502) to be separated from the first clamping portion (511), so that the first return member (510) rotates under the elastic force of the switching torsion spring (540) to fold the second pawl portion (521).

6. A back rubbing machine according to claim 5, wherein:

the limiting mechanism further comprises a driving member (550), the driving member (550) is fixedly connected to the driven wheel (520) so as to synchronously rotate along with the driven wheel (520), the driving member (550) is elastically connected with a second tongue clamping part (551) which always applies force to the inner side of the main shaft (310), the second return member (530) is provided with a second clamping part (531) which is clamped with the second tongue clamping part (551), the second return member (530) is provided with a fifth clamping part (532), when the main shaft (310) rotates from the initial position around the second clockwise direction to the gear shifting position, the third pawl part (522) is clamped in the third clamping part (342) and the fifth clamping part (532), the main wheel (340) is provided with a third clamping part (344), and when the main shaft (310) rotates around the second clockwise direction and passes through the gear shifting position, the third clamping part (344) pushes the second tongue clamping part (551) to be separated from the second clamping part (551) so as to enable the second spring (522) to rotate under the second return member (522).

7. A back rubbing machine according to claim 6, wherein:

The main machine (100) is further provided with a reset mechanism, the reset mechanism comprises a reset wheel (600) and a reset torsion spring (610), the reset wheel (600) is fixedly connected with the main shaft (310) so as to rotate along with the main shaft (310) synchronously, the reset torsion spring (610) is connected between the main wheel (340) and the reset wheel (600), and after the main shaft (310) rotates around the second clockwise and passes through the gear shifting position, the reset torsion spring (610) resets so as to drive the main shaft (310) to reset to the initial position around the first time needle direction.

8. A back rubbing machine according to claim 2, wherein:

swing arm subassembly (200) are including swing arm board (220), first motor (230), rotating assembly (240) and fixed bolster (250), swing arm board (220) fixed connection main shaft (310) are in order to drive main shaft (310) synchronous rotation, first motor (230) are passed through rotating assembly (240) are connected friction piece (210) are in order to drive friction piece (210) are rotatory, fixed bolster (250) are fixed locate host computer (100), rotating assembly (240) rotate locate swing arm board (220), fixed bolster (250) with be connected with parallelogram link mechanism between rotating assembly (240) swing arm board (220) in-process, parallelogram link mechanism linkage rotating assembly (240) produce corresponding deflection, so that rotating assembly (240) can drive friction piece (210) produce the deflection just to the human back all the time.

9. A back rubbing machine according to claim 8, wherein:

the friction piece (210) comprises a rotating piece (211), a shell (212) and an elastic piece (213), wherein the shell (212) is provided with a back rubbing part (214) facing the back of a person, the rotating component (240) is connected with the rotating piece (211), the elastic piece (213) is connected between the rotating piece (211) and the shell (212), a guiding limiting component is arranged between the rotating piece (211) and the shell (212), and the guiding limiting component is used for guiding the shell (212) to move in a reciprocating manner in the axial direction of the rotating piece (211) under the stress.

10. A back rubbing machine according to claim 1, wherein:

the back rubbing machine further comprises a fixing frame (700), a wireless charger (710) is arranged at the top of the fixing frame (700), a lifting mechanism (800) is arranged between the host machine (100) and the fixing frame (700), the lifting mechanism (800) comprises a second motor (810), a wire wheel (820) and a wire rope (830), the wire wheel (820) is rotationally arranged on the host machine (100), and the second motor (810) drives the wire wheel (820) to wind or unwind the wire rope (830) so as to drive the host machine (100) to move up and down to rub the back or be close to the wireless charger (710).

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