Auxiliary back-knocking chair

Abstract

An auxiliary back-knocking chair comprises a chair body and an automatic back-knocking device for auxiliary back-knocking installed at the rear side of the chair body, wherein the backrest of the chair body is provided with a hole so that the automatic back-knocking device can contact the back of the user; the automatic back-knocking device comprises two back-knocking units, which are symmetrically installed on a horizontal moving unit and can move horizontally left and right, and the horizontal moving unit is installed on a bottom plate, and the chair body is also installed on the bottom plate; each back-knocking unit comprises a height adjustment mechanism for adjusting the height of the automatic back-knocking device, an angle adjustment mechanism for adjusting the inclination angle of the automatic back-knocking device, and a knocking mechanism for realizing the action of automatically knocking the back, and the angle adjustment mechanism is installed on the height adjustment mechanism, and the knocking mechanism is installed on the angle adjustment mechanism. The present invention provides an auxiliary back-knocking chair with a simple structure, convenient operation, small footprint, and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of medical care equipment, in particular to an auxiliary back-knocking chair. Background Art

[0002] Traditional medicine believes that tapping the back can promote the flow of qi, loosen the skin, calm the mind, and invigorate the spirit. For people who sit for a long time, tapping the back can promote blood circulation and relieve fatigue. However, in daily life, it is very inconvenient to pat your own back, so you need a mechanical device to assist in completing the back tapping action. Most of the existing massage chairs on the market use the mechanical rolling force to perform massage. Their mechanical movements are mostly fixed or difficult to adjust, and they cannot achieve precise massage of various parts of the back. At the same time, massage chairs are relatively expensive, large in size, and not widely applicable. Summary of the invention

[0003] In order to overcome the defects of the prior art, the present invention provides an auxiliary back-knocking chair which has a simple structure, is easy to operate, occupies a small area and has a low cost.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An auxiliary back-knocking chair comprises a chair body and an automatic back-knocking device for assisting back-knocking installed at the rear side of the chair body, wherein the backrest of the chair body is provided with a hole so that the automatic back-knocking device can contact the back of a user;

[0006] The automatic back-knocking device comprises two back-knocking units, which are symmetrically mounted on a horizontal moving unit and can move horizontally left and right, and the horizontal moving unit is mounted on a bottom plate, and the chair body is also mounted on the bottom plate; each back-knocking unit comprises a height adjustment mechanism for adjusting the height of the automatic back-knocking device, an angle adjustment mechanism for adjusting the inclination angle of the automatic back-knocking device, and a knocking mechanism for realizing the action of automatically knocking the back, and the angle adjustment mechanism is mounted on the height adjustment mechanism, and the knocking mechanism is mounted on the angle adjustment mechanism;

[0007] The angle adjustment mechanism includes a stepper motor III, a worm wheel, a worm, a support rod, a gear connecting shaft, a large gear and a small gear. The support rod is a fork-shaped plate. The knocking mechanism is installed on the fork of the support rod. The stepper motor III is installed on the large gear. The large gear is rotatably installed on the height adjustment mechanism. The worm is arranged in the up and down directions and is rotatably installed at the tail end of the support rod. The output end of the stepper motor III is coaxially connected to the worm, and the worm is meshed with the worm wheel. The worm wheel and the small gear are respectively located on the left and right sides of the support rod and are connected through the gear connecting shaft. The gear connecting shaft is rotatably installed on the support rod, and the small gear is meshed with the large gear.

[0008] Furthermore, the height adjustment mechanism includes an H-shaped homemade mounting part, a screw rod, a screw rod nut, a stepper motor I and two aluminum bars. The H-shaped homemade mounting part is divided into an upper and lower part. The upper part is a rectangular frame with three holes passing through it, and the lower part is a rectangular groove. The screw rod and the two aluminum bars are both installed on the upper part of the H-shaped homemade mounting part. The screw rod is inserted into the middle hole of the H-shaped homemade mounting part, and the other two aluminum bars are respectively located on the front and rear sides of the screw rod and inserted into the corresponding holes; the screw rod nut is installed on the screw rod and moves up and down along the screw rod; the fixing part a and the fixing part b are respectively installed on the two aluminum bars and connected to the screw rod nut, and move with the screw rod nut, the stepper motor I is installed in the lower part of the H-shaped homemade mounting part, and its output end is connected to the screw rod through a coupling; the large gear is installed on the screw rod nut.

[0009] Furthermore, the horizontal moving unit includes two racks arranged along the left and right horizontal directions and four power mechanisms. Each power mechanism includes a stepper motor II and a gear reduction box. The two racks are arranged in parallel on the base plate. Two power mechanisms are respectively installed on the bottom of the H-shaped homemade mounting part of each back-knocking unit. The gear reduction boxes of the two power mechanisms are respectively engaged with the two racks.

[0010] Furthermore, the knocking mechanism includes two knocking units, which are respectively installed on the left and right forks of the support rod, and each knocking unit includes a cylinder, a synchronous support rod and a knocking rod, the knocking head of the knocking rod is made of cotton, and the knocking handle is made of a wooden stick; the cylinder body of the cylinder is connected to the hinge clamp a, the hinge claw a is fixedly installed on the lower side of the fork of the support rod, and forms a rotating pair with the hinge clamp a, the piston rod of the cylinder is connected to the connecting shaft, the connecting shaft forms a rotating pair with the bearing seat, the lower end of the synchronous support rod is connected to the bearing seat, the upper end of the synchronous support rod is connected to the knocking handle of the knocking rod through a connecting piece, the connecting piece is connected to the hinge clamp b, the hinge claw b is fixedly installed on the upper side of the fork of the support rod, and forms a rotating pair with the hinge clamp b.

[0011] Furthermore, the auxiliary back-knocking chair also includes a control system, which includes a 32-chip microcomputer, a control button, a stepper motor driver and a power supply. The control button is connected to the 32-chip microcomputer, and the 32-chip microcomputer is connected to the stepper motor through the stepper motor driver. The control button is installed on the armrest of the chair body, the 32-chip microcomputer is arranged on the chair body, and the stepper motor driver is arranged on the side of the stepper motor; the power supply is a 12V / 24V DC storage power supply or directly connected to the mains through a transformer, and the control buttons include horizontal movement control left / right buttons, height adjustment control up / down buttons, angle adjustment large / small buttons and tapping start pause / button.

[0012] The beneficial effects of the present invention are mainly manifested in: the design of the rear-mounted automatic back-knocking device and the multi-degree-of-freedom adjustment mechanism can adapt to different styles of chairs and realize accurate knocking of various parts of the back of the human body; the height adjustment mechanism adopts a screw lifting, which is small in size, noiseless, and can accurately control and adjust the lifting or pushing height according to a certain procedure; a worm gear mechanism is used as the angle adjustment mechanism and the worm gear mechanism is a pure mechanical structure, which ensures the stability and reliability of the mechanism, and the worm gear mechanism uses a revolving pair for self-locking, and the unfolded spiral angle of the worm is smaller than the friction angle of the worm gear contact to achieve mechanical self-locking; the knocking mechanism uses a cylinder to provide power, which is easy to install and maintain and has high efficiency; a button-type operating system is adopted, which has a high degree of automation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a structural schematic diagram of the horizontal moving unit.

[0015] Figure 3 It is a schematic diagram of the coordination of the height adjustment mechanism and the angle adjustment mechanism.

[0016] Figure 4 It is a structural diagram of an H-shaped homemade mounting part.

[0017] Figure 5 It is a partial structural diagram of the height adjustment mechanism.

[0018] Figure 6 It is a structural diagram of the striking unit. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Reference Figure 1 to Figure 6 , an auxiliary back-knocking chair, comprising a chair body 1 and an automatic back-knocking device for assisting back-knocking installed at the rear side of the chair body 1, wherein a 20 cm×20 cm square hole is provided at the backrest of the chair body 1 to ensure that the automatic back-knocking device can contact the back of the user;

[0021] The automatic back-knocking device comprises two back-knocking units 2 and 3, which are symmetrically mounted on a horizontal moving unit and can move horizontally left and right, and the horizontal moving unit is mounted on a bottom plate, and the chair body is also mounted on the bottom plate; each back-knocking unit comprises a height adjustment mechanism for adjusting the height of the automatic back-knocking device, an angle adjustment mechanism for adjusting the inclination angle of the automatic back-knocking device, and a knocking mechanism for realizing the action of automatically knocking the back, and the angle adjustment mechanism is mounted on the height adjustment mechanism, and the knocking mechanism is mounted on the angle adjustment mechanism;

[0022] The angle adjustment mechanism includes a stepper motor III19, a worm wheel, a worm 20, a support rod 21, a gear connecting shaft, a large gear 18 and a small gear 44. The support rod 21 is a fork-shaped plate with a hole in the middle. The knocking mechanism is installed on the fork of the support rod 21. The stepper motor III19 is installed on the large gear 18. The large gear 18 is rotatably installed on the height adjustment mechanism. The worm 20 is arranged in the up and down direction and is rotatably installed at the tail end of the support rod 21. The output end of the stepper motor III19 is coaxially connected with the worm 20, and the worm 20 is meshed with the worm wheel. The worm wheel and the small gear 44 are respectively located on the left and right sides of the support rod 21 and are connected through the gear connecting shaft. The gear connecting shaft is rotatably installed on the support rod 21, that is, the worm wheel is fixed at one end of the gear connecting shaft, and after passing through the support rod 21, the small gear 44 is fixed at the other end, and the worm wheel is meshed with the worm 20 to form a rotating pair; the small gear 44 is meshed with the large gear 18.

[0023] Furthermore, the horizontal moving unit is composed of a power mechanism and two parallel racks. The power mechanism is used for the horizontal movement of the automatic back-knocking device, and the two racks are arranged in parallel on the bottom plate. There are four power mechanisms, two in a group, and the power mechanism includes a stepper motor II and a gear reduction box. The stepper motor II is installed at the bottom of the H-shaped self-made mounting part 42. The gear reduction box is connected to the stepper motor II and meshes with the rack. The power mechanism of the first group includes a stepper motor II 10, a gear reduction box 9, a stepper motor II 7, and a gear reduction box 8. The power mechanism of the second group includes a stepper motor II 13, a gear reduction box 12, a stepper motor II 4, and a gear reduction box 5. The gear reduction box 5 and the gear reduction box 8 mesh with the rack 6, and the gear reduction box 9 and the gear reduction box 12 mesh with the rack 11.

[0024] Furthermore, the height adjustment mechanism includes an H-shaped homemade mounting part 42, a screw rod 17, a screw rod nut 45, a fixing part a46, a fixing part b47, a stepper motor I14 and two aluminum bars 16, 43; the H-shaped homemade mounting part 42 is divided into an upper and lower part, the upper part is a rectangular frame with three holes piercing through the upper and lower parts, and the lower part is a rectangular groove; the screw rod 17 and the two aluminum bars 16, 43 are all installed on the upper part of the H-shaped homemade mounting part 42, and the screw rod 17 is inserted into the middle hole of the H-shaped homemade mounting part 42, The other two aluminum bars are respectively located on the front and rear sides of the screw rod 17 and inserted into the holes on the front and rear sides; the screw nut 45 is installed on the screw rod 17 and moves up and down along the screw rod 17; the fixing piece a46 and the fixing piece b47 are respectively installed on the two aluminum bars and connected to the screw nut 45, and move with the screw nut 45. The stepper motor I14 is installed in the lower part of the H-shaped homemade mounting piece 42, and its output end is connected to the screw rod 17 through the coupling 15; the large tooth 18 wheel is installed on the screw nut 45.

[0025] Furthermore, the striking mechanism includes two striking units, which are respectively mounted on the left and right forks of the support rod 21, and each striking unit includes a cylinder, a synchronous support rod and a striking rod, the striking head of the striking rod is made of cotton, and the striking handle is a 5 cm long wooden stick; the cylinder body of the cylinder is connected to the hinge clamp a, the hinge claw a is fixedly mounted on the lower side of the fork of the support rod, and forms a rotating pair with the hinge clamp a, the piston rod of the cylinder is connected to the connecting shaft, the connecting shaft forms a rotating pair with the bearing seat, the lower end of the synchronous support rod is connected to the bearing seat, the upper end of the synchronous support rod is connected to the striking handle of the striking rod through a connecting piece, the connecting piece is connected to the hinge clamp b23, the hinge claw b22 is fixedly mounted on the upper side of the fork of the support rod, and forms a rotating pair with the hinge clamp b23. The connecting shaft passes through the piston rod of the cylinder and the bearing seat to form a rotating pair, and the cylinder, the synchronous support rod and the support rod 21 form a kinematic pair.

[0026] The two knocking units include cylinders 36, 37, knocking, 24, 25, hinge clamps a38, 40, hinge claws a39, 41, connecting shafts 30, 34, bearing seats 29, 33, synchronous support rods 27, 31, connecting pieces 26, 28, and cylinder piston rods 32, 35. The installation directions of the two knocking rods of the two knocking units of the same back knocking unit can be arranged at 90°.

[0027] Furthermore, the auxiliary back-knocking chair also includes a control system, which includes a 32-chip microcomputer with a pre-written program, a control button, a stepper motor driver and a power supply. The control button is connected to the 32-chip microcomputer, and the 32-chip microcomputer is connected to the stepper motor through the stepper motor driver. The control button is installed on the armrest of the chair body, the 32-chip microcomputer is arranged on the chair body, and the stepper motor driver is arranged at the lower part of the chair body and is connected to each stepper motor through a wire; the power supply is a 12V / 24V DC storage power supply or directly connected to the mains through a transformer.

[0028] The working process of the present invention is controlled by a 32-chip microcomputer system, and is provided with a left / right button for horizontal movement control, an up / down button for height adjustment control, a large / small button for angle adjustment, and a tap start pause / button.

[0029] When the horizontal movement control "left" button is pressed, the stepper motor II rotates in the positive direction and outputs kinetic energy, which is adjusted by the gear reducer, and drives the H-shaped homemade mounting part 42 to move left along the rack at a speed of 3 meters per minute; when the horizontal movement control "right" button is pressed, the stepper motor II rotates in the reverse direction and outputs kinetic energy, which is adjusted by the gear reducer, and drives the H-shaped homemade mounting part 42 to move right along the rack at a speed of 3 meters per minute.

[0030] When the height adjustment "up" button is pressed, the stepper motor I14 rotates in the positive direction and outputs kinetic energy to drive the screw rod 12 to rotate in the positive direction. Since the screw nut 45 moves upward together with the fixing part a46 and the fixing part b47, the large gear 18 is fixed on the screw nut 45 and moves upward along the screw rod 12 together with the screw nut 45; when the height adjustment "down" button is pressed, the stepper motor I14 rotates in the reverse direction and outputs kinetic energy to drive the screw rod 12 to rotate in the positive direction. Since the screw nut 45 moves downward together with the fixing part a46 and the fixing part b47, the large gear 18 is fixed on the screw nut 45 and moves downward along the screw rod 12 together with the screw nut 45.

[0031] When the angle adjustment "large" button is pressed, the stepper motor III19 rotates in the positive direction and outputs kinetic energy to the worm 20, which meshes with the worm wheel for transmission. At the same time, the worm wheel is linked to the pinion 44, which meshes with the large gear 18 for transmission. The rotation of the pinion 44 drives the large gear 18 to rotate, and the large gear 18 drives the entire angle adjustment mechanism thereon to rotate backward; when the angle adjustment "small" button is pressed, the stepper motor III19 rotates in the reverse direction and outputs kinetic energy to the worm 20, which meshes with the worm wheel for transmission. At the same time, the worm wheel is linked to the pinion 44, which meshes with the large gear 18 for transmission, and the large gear 18 drives the entire angle adjustment mechanism thereon to rotate forward.

[0032] When the "start" button is pressed, the air pump starts, and when the piston rod is pushed to reciprocate, the soft beating rod is pushed to flip forward and backward to complete the back beating action. When the "pause" button is pressed, the air pump stops moving.

[0033] The present invention is simple to operate and easy to use. It can be used by operating the button next to the armrest. At present, the number of people who sit for a long time in my country is increasing. This invention can effectively relieve user fatigue by tapping the back, and is highly practical. At the same time, the design of the rear automatic back-tapping device and the multi-degree-of-freedom adjustment mechanism have a wide range of applications and can achieve precise tapping of various parts of the back of the human body. The overall structure is simple, occupies a small area and has a low cost, which can meet the needs of most users.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. The structure described in the specification and drawings of the present invention, directly or indirectly applied to other related technical fields, should be included in the patent protection scope of the present invention.

Claims

1. An auxiliary back-knocking chair, characterized in that: The invention comprises a chair body and an automatic back-knocking device installed at the rear side of the chair body for assisting back-knocking, wherein the backrest of the chair body is provided with a hole so that the automatic back-knocking device can contact the back of the user; The automatic back-knocking device comprises two back-knocking units, which are symmetrically mounted on a horizontal moving unit and can move horizontally left and right, and the horizontal moving unit is mounted on a bottom plate, and the chair body is also mounted on the bottom plate; each back-knocking unit comprises a height adjustment mechanism for adjusting the height of the automatic back-knocking device, an angle adjustment mechanism for adjusting the inclination angle of the automatic back-knocking device, and a knocking mechanism for realizing the action of automatically knocking the back, and the angle adjustment mechanism is mounted on the height adjustment mechanism, and the knocking mechanism is mounted on the angle adjustment mechanism; The angle adjustment mechanism includes a stepper motor III, a worm wheel, a worm, a support rod, a gear connecting shaft, a large gear and a small gear. The support rod is a fork-shaped plate. The knocking mechanism is installed on the fork of the support rod. The stepper motor III is installed on the large gear. The large gear is rotatably installed on the height adjustment mechanism. The worm is arranged in the up and down direction and is rotatably installed at the tail end of the support rod. The output end of the stepper motor III is coaxially connected with the worm, and the worm is meshed with the worm wheel. The worm wheel and the small gear are respectively located on the left and right sides of the support rod and are connected through the gear connecting shaft. The gear connecting shaft is rotatably installed on the support rod, and the small gear is meshed with the large gear. The height adjustment mechanism includes an H-shaped homemade mounting part, a screw rod, a screw rod nut, a stepper motor I and two aluminum bars. The H-shaped homemade mounting part is divided into an upper and lower part. The upper part is a rectangular frame with three holes passing through it, and the lower part is a rectangular groove. The screw rod and the two aluminum bars are both installed on the upper part of the H-shaped homemade mounting part. The screw rod is inserted into the middle hole of the H-shaped homemade mounting part. The other two aluminum bars are respectively located on the front and rear sides of the screw rod and inserted into the corresponding holes; the screw rod nut is installed on the screw rod and moves up and down along the screw rod; the fixing part a and the fixing part b are respectively installed on the two aluminum bars and connected to the screw rod nut, and move with the screw rod nut. The stepper motor I is installed in the lower part of the H-shaped homemade mounting part, and its output end is connected to the screw rod through a coupling; the large gear is installed on the screw rod nut; The horizontal moving unit includes two racks arranged along the left and right horizontal directions and four power mechanisms, each power mechanism includes a stepper motor II and a gear reduction box, two racks are arranged in parallel on the bottom plate, and two power mechanisms are respectively installed on the bottom of the H-shaped self-made mounting member of each back-knocking unit, and the gear reduction boxes of the two power mechanisms are respectively engaged with the two racks; The knocking mechanism includes two knocking units, which are respectively installed on the left and right forks of the support rod, and each knocking unit includes a cylinder, a synchronous support rod and a knocking rod, the knocking head of the knocking rod is made of cotton, and the knocking handle is made of a wooden stick; the cylinder body of the cylinder is connected to the hinge clamp a, the hinge claw a is fixedly installed on the lower side of the fork of the support rod, and forms a rotating pair with the hinge clamp a, the piston rod of the cylinder is connected to the connecting shaft, the connecting shaft forms a rotating pair with the bearing seat, the lower end of the synchronous support rod is connected to the bearing seat, the upper end of the synchronous support rod is connected to the knocking handle of the knocking rod through a connecting piece, and the connecting piece is connected to the hinge clamp b, the hinge claw b is fixedly installed on the upper side of the fork of the support rod, and forms a rotating pair with the hinge clamp b.

2. The back-knocking auxiliary chair according to claim 1, characterized in that: The auxiliary back-knocking chair also includes a control system, which includes a 32-chip microcomputer, a control button, a stepper motor driver and a power supply. The control button is connected to the 32-chip microcomputer, and the 32-chip microcomputer is connected to the stepper motor through the stepper motor driver. The control button is installed on the armrest of the chair body, and the 32-chip microcomputer is arranged on the chair body. The stepper motor driver is arranged on the chair body and connected to the stepper motor through a wire; the power supply is a 12V / 24V DC storage power supply or directly connected to the mains through a transformer. The control buttons include horizontal movement control left / right buttons, height adjustment control up / down buttons, angle adjustment large / small buttons and tapping start pause / button.

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