Rehabilitation walking aid

Abstract

The rehabilitation walking aid mainly comprises a main body frame, a swing rod, a lifting rod, a left handle rod, a right handle rod and a seat support, four wheels are installed on the lower side of the main body frame, two pedals are installed at the front ends of the two sides of the main body frame respectively, the swing rod is installed at the upper end of the main body frame and can rotate reversely and be positioned, and the seat support is installed on the swing rod and can be overturned. A seat for a user to sit on is arranged on the seat support, the lifting rod is installed at the upper end in the swing rod and can move up and down and be positioned, a spline cylinder is transversely arranged at the upper end of the lifting rod, the left handle rod and the right handle rod are connected with the spline cylinder through splines, and left handle threads are arranged at the rear end of the left side of the left handle rod. The left middle sleeve and the left handle are installed in a threaded fit mode to form a thread pair. The left handle and the left middle sleeve are installed in a matched mode to form a thread pair. A right handle thread is arranged at the rear end of the right side of the right handle rod, the right middle sleeve and the right handle thread are installed in a matched mode to form a thread pair, and the right handle and the right middle sleeve are installed in a matched mode to form a thread pair.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation walking aid, and in particular to a rehabilitation walking aid. Background Art

[0002] A walker is a tool that assists the human body in supporting weight, maintaining balance and walking through mechanical support. It can help those with limited leg movement or loss of the ability to walk alone to regain a certain walking ability and facilitate their daily activities. The main function of a walker is to support the human body's center of gravity, assist or replace limb function, reduce the load on the affected limb, and maintain the stability of the lower limb. A wheelchair is a chair with wheels that can help replace walking and is an important means of transportation for people with physical disabilities and mobility impairments. A wheelchair not only meets their transportation needs, but also makes it convenient for family members to move and care for patients, so that patients can use wheelchairs for physical exercise and participate in social activities.

[0003] Combining a walker and a wheelchair can play a wider role. First, it can improve the user's mobility. For people with limited mobility, a rehabilitation walker can greatly improve their mobility. When they need to walk, they can use a walker for support and balance. When they need to move or rest for a long time, they can use a wheelchair for mobility. Second, it can improve the user's quality of life. A rehabilitation walker can allow people with limited mobility to carry out daily activities more independently, such as shopping, walking, and socializing. This not only helps to improve their quality of life, but also helps to enhance their self-confidence and social skills. Third, a rehabilitation walker can adapt to a variety of scenarios. Walkers and wheelchairs each have different characteristics and applicable scenarios. Using them together allows them to find suitable assistive tools in different scenarios to meet different needs.

[0004] In summary, rehabilitation walkers can bring many conveniences and benefits to people with limited mobility. Therefore, it is of great significance to develop a rehabilitation walker that is simple to use, easy to operate, and foldable. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a rehabilitation walker, which mainly includes a main frame, a right front wheel, a left front wheel, a swing rod, a lifting rod, a left handle rod, a right handle rod, a seat bracket, a lower support rod, an upper support rod, and a support rod spring, characterized in that: the main frame is a round tube bending structure, and a left support leg and a right support leg are respectively arranged rearward on the left and right sides of the main frame, a positioning frame is provided at the middle position of the upper end of the main frame, and the left rear wheel and the right rear wheel are respectively installed at the rear ends of the left and right legs; a right wheel locking disk is coaxially provided on the left end of the right front wheel, and five brake grooves are circumferentially arranged at equal angles on the right wheel locking disk, the right front wheel is rotatably installed on the right end of the main frame, and a positioning ball is also installed on the right end of the main frame through a threaded structure, The right pedal is rotatably installed on the right end of the main frame, the right brake lever is installed on the upper side of the right end of the right pedal and constitutes a moving pair, the right brake spring is coaxially installed with the right brake lever, and the right end of the right brake lever is rotatably installed with the right brake wheel; the left front wheel has the same structure as the right front wheel, the left front wheel is installed on the left end of the main frame, the left pedal and the right pedal form a left-right symmetrical structure, the left pedal is rotatably installed on the left end of the main frame, the structure and installation principle of the left brake lever, the left brake spring and the left brake wheel are symmetrical with the corresponding structure on the right side; a threaded hole is horizontally arranged on the upper end of the swing rod, and a long strip groove is vertically arranged on the lower end of the swing rod that runs through the left and right sides, the lower end of the swing rod is rotatably connected to the positioning frame, the top column spring is installed inside the lower end of the swing rod, and the top column is installed on the top column The lower end of the spring can move up and down, and the limit rod is installed in the long groove at the lower end of the swing rod and can move up and down; the front end of the seat bracket is rotatably connected to the swing rod, and a seat is provided on the upper side of the rear end of the seat bracket, the lower end of the lower support rod is rotatably connected to the swing rod, the upper end of the lower support rod is rotatably connected to the lower end of the upper support rod, and the upper end of the upper support rod is rotatably connected to the lower side of the seat bracket, and the support rod spring is installed inside the upper support rod and the lower support rod; a plurality of positioning holes are vertically arranged on the rear side of the lifting rod, the lifting rod is coaxially installed on the upper end of the swing rod and forms a moving pair, the knob is installed in the threaded hole at the upper end of the swing rod, and a spline cylinder is horizontally arranged on the upper end of the lifting rod, and a left inner spline and a right inner spline are arranged at both ends of the spline cylinder. The inner middle position of the spline cylinder is a circular hole structure, and a window is arranged at the upper end of the spline cylinder. The front end of the handle rod limiting plate is rotatably connected to the front end of the window, and a magnet is arranged at the rear end of the window. The left handle outer spline at the right end of the left handle rod is installed in cooperation with the left inner spline, and the right handle outer spline at the left end of the right handle rod is installed in cooperation with the right inner spline, and the handle rod spring is installed between the left handle outer spline and the right handle outer spline; the left rear end of the left handle rod is provided with a left handle thread, and the left middle sleeve is installed in cooperation with the left handle thread to form a thread pair, and the left handle is installed in cooperation with the left middle sleeve to form a thread pair; the right rear end of the right handle rod is provided with a right handle thread, and the right middle sleeve is installed in cooperation with the right handle thread to form a thread pair, and the right handle is installed in cooperation with the right middle sleeve to form a thread pair.

[0006] Preferably, a rocker arm shaft is laterally arranged in the middle of the positioning frame, an upper slot is arranged at the upper end, the upper slot is located directly above the rocker arm shaft, and a lower slot is arranged on the rear side of the positioning frame, the lower slot is located directly behind the rocker arm shaft.

[0007] Preferably, the left rear wheel and the right rear wheel have the same structure, both of which are universal caster structures.

[0008] Preferably, the bottom surface of the brake groove on the right wheel locking disc is configured as an inclined structure.

[0009] Preferably, the positioning ball is installed on the right end of the main frame through a threaded structure. The outer side of the positioning ball is provided with an external thread, and a round ball is provided at its inner outer end. A spring is provided inside the round ball. Under the elastic force of the spring, the above-mentioned round ball extends outward but cannot detach.

[0010] Preferably, the left end of the right pedal is a flat plate structure, and the upper side of the flat plate structure is provided with anti-slip stripes, which can increase the friction when the user steps on it.

[0011] Preferably, the right brake wheel is made of hard material, and the thickness of the right brake wheel is slightly smaller than the width of the brake groove.

[0012] Preferably, when the left pedal and the right pedal are flipped upward and are in a vertical state, the left brake wheel and the right brake wheel can respectively fall into the corresponding brake grooves, thereby locking the rotation of the left front wheel and the right front wheel; when the left pedal and the right pedal are flipped downward and are in a horizontal state, during this process the left brake wheel and the right brake wheel slide out along the inclined structure at the bottom of the corresponding brake groove, thereby releasing the locking state of the left front wheel and the right front wheel.

[0013] Preferably, the seat is provided with a sponge cushion to provide a better riding experience for the user.

[0014] Preferably, an actuating plate is provided on the upper side of the handle rod limiting plate, and the actuating plate is convenient for applying force to rotate the handle rod limiting plate.

[0015] The beneficial effects of the present invention are as follows: (1) When the rehabilitation walker is in the walking assistance mode, the user can hold the left handle and the right handle with both hands to assist in walking; when the rehabilitation walker is in the wheelchair mode, the user can sit on the seat, and the accompanying person can hold the left handle and the right handle with both hands to push the rehabilitation walker to walk; when the rehabilitation walker is in the folding mode, the volume of the rehabilitation walker can be significantly reduced, which is convenient for transportation and storage. (2) When the rehabilitation walker is in the walking assistance mode, the two pedals are in a vertical state, which can not only lock the rotation of the two front wheels, but also avoid interfering with the user's walking steps; when the rehabilitation walker is in the wheelchair mode, the two pedals are in a horizontal state, which can not only unlock the rotation of the two front wheels, but also provide support for the user's feet. (3) The lifting rod is adjusted in height according to the height of the user, thereby adjusting the height of the left handle and the right handle, so that the rehabilitation walker has a wider applicability. (4) When the rehabilitation walker is in the walking aid mode, the seat can be swung downward and kept in a vertical position to avoid interfering with the user's walking; when the rehabilitation walker is in the wheelchair mode, the seat can be swung upward and kept in a horizontal position so that the user can sit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention when it is in the walking-assisting mode.

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention when it is in wheelchair mode.

[0018] Figure 3 It is a schematic diagram of the overall structure of the present invention when it is in a folding mode.

[0019] Figure 4 It is a partial enlarged structural schematic diagram of the right front wheel locked state in the present invention.

[0020] Figure 5 It is a partial enlarged structural schematic diagram of the right front wheel in the unlocked state in the present invention.

[0021] Figure 6 It is an exploded schematic diagram of the components related to the right pedal position in the present invention.

[0022] Figure 7 It is a partial enlarged structural schematic diagram of the position of the spline cylinder in the present invention.

[0023] Figure 8 It is an exploded schematic diagram of the parts related to the position of the spline cylinder in the present invention.

[0024] Fig. 9 It is a schematic diagram of the local cross-sectional structure of the spline cylinder position in the present invention.

[0025] Fig.10It is a partial cross-sectional structural schematic diagram of the position of the positioning frame in the present invention (the swing rod is in a vertical state).

[0026] Fig.11 It is a partial cross-sectional structural schematic diagram of the position of the positioning frame in the present invention (the swing rod is in a horizontal state).

[0027] Fig.12 It is a partial enlarged structural schematic diagram of the positions of the upper support rod and the lower support rod in the present invention (seat level).

[0028] Fig.13 It is a partial enlarged structural schematic diagram of the positions of the upper support rod and the lower support rod in the present invention (the seat is vertical).

[0029] Figure numbers: 1 main frame, 1.1 left leg, 1.2 right leg, 1.3 positioning frame, 1.4 left pedal bracket, 1.5 right pedal bracket, 1.6 positioning screw hole, 1.7 lower slot, 1.8 swing arm shaft, 1.9 upper slot, 2 swing arm, 2.1 bracket shaft, 2.2 support ear, 2.3 spring cavity, 3 lifting rod, 3.1 positioning hole, 3.2 spline cylinder, 3.3 magnet, 3.4 left inner spline, 3.5 right inner spline, 3.6 lifting guide groove, 4 left handle rod, 4.1 left handle thread, 4.2 left handle outer spline, 5 right handle rod, 5.1 right handle thread, 5.2 right handle outer spline, 6 seat bracket , 6.1 seat, 7 limit rod, 8 left pedal, 9 right pedal, 9.1 limit block, 9.2 spring top block, 9.3 brake rod guide block, 10 left front wheel, 10.1 left wheel locking plate, 11 right front wheel, 11.1 right wheel locking plate, 11.2 brake groove, 12 left rear wheel, 13 right rear wheel, 14 knob, 15 left handle, 16 right handle, 17 left middle sleeve, 18 right middle sleeve, 19 handle bar limit plate, 20 upper support rod, 21 lower support rod, 22 positioning ball, 23 right brake wheel, 24 right brake spring, 25 right brake rod, 26 handle bar spring, 27 top column, 28 top column spring, 29 support rod spring. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0031] like Figure 1-13As shown, a rehabilitation walker mainly includes a main frame 1, a swing rod 2, a lifting rod 3, a left handle rod 4, a right handle rod 5, a seat bracket 6, a limiting rod 7, a left pedal 8, a right pedal 9, a left front wheel 10, a right front wheel 11, a left rear wheel 12, a right rear wheel 13, a knob 14, a left handle 15, a right handle 16, a left middle sleeve 17, a right middle sleeve 18, a handle rod limiting plate 19, an upper support rod 20, a lower support rod 21, a positioning ball 22, a right brake wheel 23, a right brake spring 24, a right brake rod 25, a handle rod spring 26, a top column 27, a top column spring 28, and a support rod spring 29, characterized in that: the main frame 1 is a round tube bending structure, and its left and right ends are vertically arranged, the left side of the main frame 1 is provided with a left support leg 1.1 backward, the right side of the main frame 1 is provided with a right support leg 1.2 backward, and the right end of the main frame 1 is provided with a right support leg 1.2 backward. A right pedal bracket 1.5 is arranged on the side, a positioning screw hole 1.6 is arranged on the front side of the right pedal bracket 1.5, a left pedal bracket 1.4 is arranged on the lower side of the left end of the main frame 1, the left pedal bracket 1.4 and the right pedal bracket 1.5 are in a left-right symmetrical structure, a positioning bracket 1.3 is arranged at the middle position of the upper end of the main frame 1, a rocker arm rotating shaft 1.8 is arranged horizontally in the middle position of the positioning bracket 1.3, an upper groove 1.9 is arranged at the upper end, the upper groove 1.9 is located directly above the rocker arm rotating shaft 1.8, a lower groove 1.7 is arranged on the rear side of the positioning bracket 1.3, and the lower groove 1.7 is located directly behind the rocker arm rotating shaft 1.8; the left rear wheel 12 and the right rear wheel 13 have the same structure, both are universal caster structures, the left rear wheel 12 is installed at the rear end of the left support leg 1.1, and the right rear wheel 13 is installed at the rear end of the right support leg 1.2.

[0032] like Figure 1 , Figure 6As shown, a right wheel locking plate 11.1 is coaxially arranged at the left end of the right front wheel 11, and five brake grooves 11.2 are arranged at equal angles in the circumferential direction on the right wheel locking plate 11.1, and the bottom surface of each brake groove 11.2 is arranged as an inclined structure, the right front wheel 11 is installed at the right end of the main frame 1 and constitutes a revolute pair, and the right wheel locking plate 11.1 is located directly below the right pedal bracket 1.5; the outer side of the positioning ball 22 is provided with an external thread, and a round ball is arranged at the inner outer end thereof, and a spring is arranged inside the round ball, under the elastic force of the spring, the above-mentioned round ball extends outward but cannot be detached, and the positioning ball 22 is arranged through the threaded structure Installed in the positioning screw hole 1.6; the left end of the right pedal 9 is a flat plate structure, and the upper side of the flat plate structure is provided with anti-skid stripes, which can increase the friction when the user steps on it; a brake rod guide block 9.3 is provided on the upper side of the right end of the right pedal 9, and a through square hole is horizontally provided inside the brake rod guide block 9.3; a spring top block 9.2 is provided on the left side of the brake rod guide block 9.3, and a through round hole is horizontally provided inside the spring top block 9.2; a semi-spherical positioning pit is provided on the front side of the right pedal 9, a limited position block 9.1 is provided on the lower side of the right end of the right pedal 9, and the right end of the right pedal 9 is rotatably connected to the right pedal bracket 1.5 ; When the right pedal 9 is in a horizontal state, the limit block 9.1 contacts the lower end of the right pedal bracket 1.5, so that the right pedal 9 remains in a horizontal state and provides support for the user's right foot. When the right pedal 9 is flipped upward by 90° and is in a vertical state, the ball in the positioning ball 22 can be stuck in the positioning pit on the front side of the right pedal 9 to prevent the right pedal 9 from spontaneously rotating downward; the right end of the right brake lever 25 is a square rod structure, and its left end is a round rod structure, and a round plate is arranged in the middle position. The right brake lever 25 is installed inside the spring top block 9.2 and the brake lever guide block 9.3, and the square rod structure at the right end of the right brake lever 25 is installed inside the brake lever guide block 9.3 The square hole of the right brake rod 25 can be moved left and right. The round rod structure at the left end of the right brake rod 25 is coaxially installed with the round hole inside the spring top block 9.2. At the same time, the round plate on the right brake rod 25 is located between the spring top block 9.2 and the brake rod guide block 9.3; the right brake wheel 23 is made of hard material, the thickness of the right brake wheel 23 is slightly smaller than the width of the brake groove 11.2, and the right brake wheel 23 is rotatably installed on the right end of the right brake rod 25; the right brake spring 24 is installed between the round plate on the right brake rod 25 and the spring top block 9.2. Under the elastic force of the right brake spring 24, the round plate on the right brake rod 25 is pressed tightly against the left side of the brake rod guide block 9.3.

[0033] like Figure 1 , Figure 6As shown, the structure of the left front wheel 10 is the same as that of the right front wheel 11, but the installation directions are opposite. A left wheel locking plate 10.1 is coaxially arranged at the right end of the left front wheel 10, and five brake grooves are arranged at equal angles in the circumferential direction on the left wheel locking plate 10.1, and the bottom surface of each brake groove is arranged as an inclined structure. The left front wheel 10 is installed at the left end of the main frame 1 and forms a revolute pair, and the left wheel locking plate 10.1 is located directly below the left pedal bracket 1.4; a positioning ball is installed in the positioning screw hole on the front side of the left pedal bracket 1.4; the left pedal 8 and the right pedal 9 are in a left-right symmetrical structure, and the left The right end of the pedal 8 is a flat plate structure, and the upper side of the flat plate structure is provided with anti-skid stripes, which can increase the friction when the user steps on it. A brake rod guide block is provided on the upper side of the left end of the left pedal 8, and a through square hole is transversely provided inside the brake rod guide block. A spring top block is provided on the left side of the brake rod guide block, and a through round hole is transversely provided inside the spring top block. A semi-spherical positioning pit is provided on the front side of the left pedal 8, and a limiting block is provided on the lower side of the left end of the left pedal 8. The left end of the left pedal 8 is rotatably connected to the left pedal bracket 1.4; when the left pedal 8 is in a horizontal state, The limit block at the left end of the left pedal 8 contacts the lower end of the left pedal bracket 1.4, so that the left pedal 8 remains in a horizontal state and provides support for the user's left foot. When the left pedal 8 is flipped upward by 90° and is in a vertical state, the ball in the left positioning ball can be stuck in the positioning pit on the front side of the left pedal 8 to prevent the left pedal 8 from spontaneously rotating downward; the left brake lever and the right brake lever 25 are in a left-right symmetrical structure, the left end of the left brake lever is a square rod structure, and the right end is a round rod structure, and a round plate is arranged in the middle position, the left brake lever is installed inside the above-mentioned spring top block and the above-mentioned brake lever guide block, and the left brake lever The square rod structure at the left end is installed in the square hole inside the above-mentioned brake rod guide block and can move left and right. The round rod structure at the right end of the left brake rod is coaxially installed with the round hole inside the above-mentioned spring top block. At the same time, the round plate on the left brake rod is located between the above-mentioned spring top block and the above-mentioned brake rod guide block; the left brake wheel is made of hard material, the thickness of the left brake wheel is slightly smaller than the width of the brake groove, and the left brake wheel is rotatably installed at the left end of the left brake rod; the left brake spring is installed between the round plate on the left brake rod and the above-mentioned spring top block. Under the elastic force of the left brake spring, the round plate on the left brake rod is pressed against the right side of the above-mentioned brake rod guide block.

[0034] like Figure 4 , Figure 5As shown, when the rehabilitation walker is in the walking-assisting mode, the left pedal 8 and the right pedal 9 are both flipped upward and in a vertical state. At this time, the left brake wheel is pressed on the cylindrical surface of the left wheel locking disk 10.1, and the right brake wheel 23 is pressed on the cylindrical surface of the right wheel locking disk 11.1. At this time, the left brake spring and the right brake spring 24 are compressed. As the left front wheel 10 and the right front wheel 11 rotate, under the action of the elastic force of the left brake spring and the right brake spring 24, the left brake wheel falls into the brake groove of the left wheel locking disk 10.1, and the right brake wheel 23 falls into the brake groove. 11.2, and lock the rotation of the left front wheel 10 and the right front wheel 11 to achieve the braking effect of the rehabilitation walker, which helps the user to perform assisted walking more safely; when the rehabilitation walker is in wheelchair mode, the left pedal 8 and the right pedal 9 are flipped downward and are in a horizontal state. During this process, the left brake wheel and the right brake wheel 23 slide out along the inclined structure at the bottom of the corresponding brake groove, so that the left brake wheel and the right brake wheel 23 respectively release the locking state of the left front wheel 10 and the right front wheel 11. At this time, the accompanying person can push the rehabilitation walker to move.

[0035] like Fig.10 , Fig.11 As shown, the main body of the swing lever 2 is a circular tubular structure, a threaded hole is transversely arranged at the upper end thereof, a long strip groove is vertically arranged at the lower end of the swing lever 2, a spring cavity 2.3 is vertically arranged inside the lower end of the swing lever 2, a guide strip is vertically arranged on the front side of the inner part of the swing lever 2, a support ear 2.2 is arranged on the rear side of the swing lever 2 near the lower end, and bracket shafts 2.1 are transversely arranged on both sides of the swing lever 2 near the upper end; the lower end of the swing lever 2 is rotatably connected to the swing lever shaft 1.8, a top column spring 28 is installed at the upper end of the spring cavity 2.3, the top column 27 is a cylindrical structure, and its diameter is slightly smaller than the diameter of the spring cavity 2.3, and the top column 27 is installed on the spring cavity 2.3. The lower end of the spring chamber 2.3 can move up and down, and the limit rod 7 is installed in the long groove at the lower end of the swing arm 2 and can move up and down; when the swing arm 2 is in an upright state, the top column spring 28 pushes the top column 27 downward, and the top column 27 presses the limit rod 7 in the upper groove 1.9, thereby realizing the vertical position locking of the swing arm 2; when the swing arm 2 needs to be folded and laid down, pull the two ends of the limit rod 7 upward to move the limit rod 7 upward and compress the top column spring 28, and then rotate the swing arm 2 backward to a horizontal position, and the top column spring 28 pushes the top column 27 forward, and the top column 27 presses the limit rod 7 in the lower groove 1.7, thereby realizing the horizontal position locking of the swing arm 2.

[0036] like Fig.12 , Fig.13As shown, the front end of the seat bracket 6 is a plate-shaped bending structure, and its front end is rotatably connected to the bracket shaft 2.1. A seat 6.1 is arranged on the upper side of the rear end of the seat bracket 6, and a sponge cushion is arranged on the seat 6.1 to provide a better experience for the user when riding; the lower end of the lower support rod 21 is rotatably connected to the support ear 2.2, the upper end of the lower support rod 21 is rotatably connected to the lower end of the upper support rod 20, and the upper end of the upper support rod 20 is rotatably connected to the lower side of the seat bracket 6; the support rod spring 29 is installed inside the upper support rod 20 and the lower support rod 21, and the support rod spring 29 is a tension spring, and the lower end of the support rod spring 29 is connected to the position near the lower end of the lower support rod 21, and the upper end of the support rod spring 29 is connected to the position near the middle of the upper support rod 20; when the rehabilitation walker is in the walking aid mode, the seat bracket 6 needs to be rotated downward to avoid interfering with the user's walking. At this time, push it forward The connection position of the upper support rod 20 and the lower support rod 21 causes the upper support rod 20 and the lower support rod 21 to fold, and then under the tension of the support rod spring 29, the upper support rod 20 and the lower support rod 21 fold spontaneously, and the seat bracket 6 rotates downward 90° to a vertical state; when the rehabilitation walker is in wheelchair mode, the seat 6.1 needs to be transformed into a horizontal state for the user to sit on. At this time, it is only necessary to rotate the seat bracket 6 upward to a horizontal position, and then pull the connection position of the upper support rod 20 and the lower support rod 21 backward so that the lower end of the upper support rod 20 and the upper end of the lower support rod 21 are supported. In this process, the support rod spring 29 is gradually stretched. When the upper support rod 20 and the lower support rod 21 are in the same straight line, the support rod spring 29 can prevent the upper support rod 20 and the lower support rod 21 from spontaneously folding. At this time, the swing rod 2, the seat bracket 6 and the upper support rod 20 and the lower support rod 21 form a triangular stable structure.

[0037] like Fig.12 , Fig.13As shown, the lower end of the lifting rod 3 is a circular tubular structure, and a lifting guide groove 3.6 is vertically arranged on the front side of the circular tubular structure, and a plurality of positioning holes 3.1 are vertically arranged at equal intervals on the rear side of the circular tubular structure. The lifting rod 3 is coaxially installed on the upper end of the inner part of the swing rod 2 and forms a moving pair, and the lifting guide groove 3.6 is installed in cooperation with the guide strip on the front side of the inner part of the swing rod 2, so that the lifting rod 3 can move up and down but cannot rotate; the knob 14 is installed in the threaded hole at the upper end of the swing rod 2, and the knob 14 can be screwed into the corresponding positioning hole 3.1, thereby locking the position of the lifting rod 3; a spline cylinder 3.2 is horizontally arranged on the upper end of the lifting rod 3, a left inner spline 3.4 is arranged on the inner left end of the spline cylinder 3.2, and a right inner spline 3.5 is arranged on the inner right end of the spline cylinder 3.2, and the inner middle position of the spline cylinder 3.2 is a circular hole structure, and the diameter of the circular hole structure is larger than the maximum diameter of the inner splines on both sides, and the spline cylinder 3. 2 is provided with a window at the upper end, and a magnet 3.3 is provided at the rear end of the window; the front end of the handle rod limit plate 19 is rotatably connected to the spline cylinder 3.2, and a trigger plate is provided on the upper side of the handle rod limit plate 19, which is convenient for applying force to rotate the handle rod limit plate 19. When the handle rod limit plate 19 is in a closed state, the magnet 3.3 can rely on magnetic attraction to absorb the handle rod limit plate 19, so as to prevent the handle rod limit plate 19 from spontaneously moving during the movement of the rehabilitation walker. Open; the right end of the left handle rod 4 is provided with a left handle external spline 4.2, which is installed at the left end of the inside of the spline tube 3.2 and is installed in cooperation with the left internal spline 3.4; the left end of the right handle rod 5 is provided with a right handle external spline 5.2, which is installed at the right end of the inside of the spline tube 3.2 and is installed in cooperation with the right internal spline 3.5; the handle rod spring 26 is installed between the left handle external spline 4.2 and the right handle external spline 5.2.

[0038] like Figure 3 , Figure 7As shown, when the rehabilitation walker is in the walking aid mode and the wheelchair mode, the left handle bar 4 and the right handle bar 5 are both in a horizontal state. Under the elastic force of the handle bar spring 26, the left handle outer spline 4.2 is meshed with the left inner spline 3.4 and is located at the inner left end of the spline tube 3.2, and the right handle outer spline 5.2 is meshed with the right inner spline 3.5 and is located at the inner right end of the spline tube 3.2. The handle bar limit plate 19 is in a closed state, and the handle bar limit plate 19 simultaneously supports the right end of the left handle outer spline 4.2 and the left end of the right handle outer spline 5.2 to prevent the left handle bar 4 and the right handle bar 5 from moving left and right. When the rehabilitation walker is in the folding mode, the left handle bar 4 and the right handle bar 5 need to be rotated downward by 70°, first open the handle bar limit plate 19 upward, thereby releasing the lateral lock of the left handle bar 4 and the right handle bar 5, and then push them to the right. The left handle rod 4 causes the left handle outer spline 4.2 to disengage from the left inner spline 3.4 and enter into the circular hole structure in the middle position of the spline tube 3.2, and then the left handle rod 4 is rotated downward by 70°, and then the thrust to the right on the left handle rod 4 is released, so that the left handle rod 4 moves to the left under the elastic force of the handle rod spring 26 and re-engages with the left inner spline 3.4, and then the right handle rod 5 is pushed to the left, so that the right handle outer spline 5.2 disengages from the right inner spline 3.5 and enters into the circular hole structure in the middle position of the spline tube 3.2, and then the right handle rod 5 is rotated downward by 70°, and then the thrust to the left on the right handle rod 5 is released, so that the right handle rod 5 moves to the right under the elastic force of the handle rod spring 26 and re-engages with the right inner spline 3.5, and then the handle rod limit plate 19 is closed downward to re-lock the positions of the left handle rod 4 and the right handle rod 5.

[0039] like Figure 1 , Figure 2As shown, the left rear end of the left handle rod 4 is provided with a left handle thread 4.1, which is a right-hand thread. The interior of the left middle sleeve 17 is provided with an internal thread, and the outer side thereof is provided with a right-hand external thread. The left middle sleeve 17 and the left handle thread 4.1 are installed in cooperation with each other to form a thread pair, and the two cannot be separated. The interior of the left handle 15 is provided with a right-hand internal thread. The left handle 15 and the left middle sleeve 17 are installed in cooperation with each other to form a thread pair, and the two cannot be separated. Soft rubber is provided on the outer side of the left handle 15 to improve the gripping feel of the user's left hand; the right rear end of the right handle rod 5 is provided with a right handle thread 5.1, and the right The handle thread 5.1 is a right-hand thread, the inside of the right middle sleeve 18 is provided with an internal thread, and the outside thereof is provided with a right-hand external thread, the right middle sleeve 18 is installed in cooperation with the right handle thread 5.1 to form a thread pair, and the two cannot be separated, the inside of the right handle 16 is provided with a right-hand internal thread, the right handle 16 is installed in cooperation with the right middle sleeve 18 to form a thread pair, and the two cannot be separated, and the outside of the right handle 16 is provided with soft rubber, which can improve the user's right hand grip feel; when the rehabilitation walker is in the walking aid mode, the left handle 15 is turned clockwise to move the left handle 15 forward, and when the left middle sleeve 17 is completely After entering the left handle 15, continue to rotate the left handle 15 clockwise, so that the left handle 15 drives the left middle sleeve 17 to rotate and move forward together, until the left handle thread 4.1 completely enters the left middle sleeve 17, so that the left handle 15 can provide support for the user's left hand; rotate the right handle 16 clockwise to move the right handle 16 forward, and when the right middle sleeve 18 completely enters the right handle 16, continue to rotate the right handle 16 clockwise to drive the right middle sleeve 18 to rotate and move forward together, until the right handle thread 5.1 completely enters the right middle sleeve 18, so that The right handle 16 can provide support for the user's right hand; when the rehabilitation walker is in wheelchair mode, the left handle 15 is rotated counterclockwise until the left handle thread 4.1 extends from the left middle sleeve 17, and the left middle sleeve 17 extends from the left handle 15, and the right handle 16 is rotated counterclockwise until the right handle thread 5.1 extends from the right middle sleeve 18, and the right middle sleeve 18 extends from the right handle 16, thereby extending the positions of the left handle 15 and the right handle 16 backward. When the user sits on the seat 6.1, it is convenient for the accompanying person to hold the left handle 15 and the right handle 16 with both hands to control the rehabilitation walker.

[0040] The walking mode of rehabilitation walker: Figure 1As shown, the left pedal 8 and the right pedal 9 are both flipped upward and in a vertical state, the rotation of the left front wheel 10 and the right front wheel 11 is locked, the swing arm 2 is in an upright state, the seat bracket 6 is rotated downward and in a vertical state, the lifting rod 3 is adjusted to a suitable position according to the user's height and locked by the knob 14, the left handle bar 4 and the right handle bar 5 are adjusted to a horizontal position and locked, the left handle 15 and the right handle 16 are rotated clockwise to the front end position, and then the user can achieve assisted walking by holding the left handle 15 and the right handle 16.

[0041] Wheelchair mode of rehabilitation walker: Figure 2 As shown, the left pedal 8 and the right pedal 9 are flipped downward and are in a horizontal state, and the locking state of the left front wheel 10 and the right front wheel 11 is released, the swing arm 2 is in an upright state, the seat bracket 6 is rotated upward to a horizontal position, and the upper support rod 20 and the lower support rod 21 are in the same straight line to support the seat bracket 6, the lifting rod 3 is adjusted to a suitable position according to the user's height and locked by the knob 14, the left handle bar 4 and the right handle bar 5 are adjusted to a horizontal position and locked, the left handle 15 and the right handle 16 are rotated counterclockwise to the rear end position, the user can sit on the seat 6.1, and place both feet on the left pedal 8 and the right pedal 9 respectively, and the accompanying person can push the rehabilitation walker to walk by holding the left handle 15 and the right handle 16.

[0042] Folding mode of rehabilitation walker: Figure 3 As shown, the left pedal 8 and the right pedal 9 are both flipped upward and in a vertical state, the rotation of the left front wheel 10 and the right front wheel 11 is locked, the seat bracket 6 is rotated downward and in a vertical state, the left handle 15 and the right handle 16 are rotated clockwise to the front end position, the left handle bar 4 and the right handle bar 5 are adjusted to rotate downward 70° and locked, the lifting rod 3 is adjusted to the lowest position and locked by the knob 14, and the swing rod 2 is rotated backward to a horizontal position. When the rehabilitation walker is in the folding mode, its own volume can be significantly reduced, which is convenient for transportation and storage of the rehabilitation walker.

Claims

1. A rehabilitation walker, mainly comprising a main frame (1), a right front wheel (11), a left front wheel (10), a swing rod (2), a lifting rod (3), a left handle rod (4), a right handle rod (5), a seat bracket (6), a lower support rod (21), an upper support rod (20), and a support rod spring (29), characterized in that: The main frame (1) is a round tube bending structure, with a left leg (1.1) and a right leg (1.2) respectively arranged backwards on the left and right sides thereof, a positioning frame is provided at the middle position of the upper end of the main frame (1), and a left rear wheel (12) and a right rear wheel (13) are respectively installed at the rear ends of the left leg (1.1) and the right leg (1.2); The left end of the right front wheel (11) is coaxially provided with a right wheel locking plate (11.1), and five brake grooves (11.2) are circumferentially arranged at equal angles on the right wheel locking plate (11.1). The right front wheel (11) is rotatably mounted on the right end of the main frame (1), and a positioning ball (22) is also mounted on the right end of the main frame (1) through a threaded structure. The right pedal (9) is rotatably mounted on the right end of the main frame (1), and the right brake rod (25) is mounted on the upper side of the right end of the right pedal (9) to form a moving pair. The vehicle spring (24) is coaxially mounted with the right brake rod (25), and the right end of the right brake rod (25) is rotatably mounted with the right brake wheel (23); the left front wheel (10) and the right front wheel (11) have the same structure, and the left front wheel (10) is mounted on the left end of the main frame (1); the left pedal (8) and the right pedal (9) form a left-right symmetrical structure, and the left pedal (8) is rotatably mounted on the left end of the main frame (1); the structure and mounting principle of the left brake rod, the left brake spring, and the left brake wheel are symmetrical to the corresponding structure on the right side; The upper end of the swing rod (2) is provided with a threaded hole in the horizontal direction, the lower end of the swing rod (2) is provided with a long groove running through the left and right vertically, the lower end of the swing rod (2) is rotatably connected to the positioning frame (1.3), the top column (27) spring is installed inside the lower end of the swing rod (2), the top column (27) is installed at the lower end of the top column (27) spring and can move up and down, the limit rod (7) is installed in the long groove at the lower end of the swing rod (2) and can move up and down; the front end of the seat bracket (6) is rotatably connected to the swing rod (2), and the upper side of the rear end of the seat bracket (6) is provided with a seat (6.1) The lower end of the lower support rod (21) is rotatably connected to the swing rod (2), the upper end of the lower support rod (21) is rotatably connected to the lower end of the upper support rod (20), the upper end of the upper support rod (20) is rotatably connected to the lower side of the seat bracket (6), and the support rod spring (29) is installed inside the upper support rod (20) and the lower support rod (21); a plurality of positioning holes (3.1) are vertically arranged on the rear side of the lifting rod (3), the lifting rod (3) is coaxially installed on the upper end of the swing rod (2) and forms a moving pair, the knob (14) is installed in the threaded hole at the upper end of the swing rod (2), and the upper end of the lifting rod (3) A spline cylinder (3.2) is arranged horizontally, and a left inner spline (3.4) and a right inner spline (3.5) are arranged at both ends of the spline cylinder (3.2). The middle position of the spline cylinder (3.2) is a circular hole structure. A window is arranged at the upper end of the spline cylinder (3.2). The front end of the handle rod limiting plate (19) is rotatably connected to the front end of the window. A magnet is arranged at the rear end of the window. The left handle outer spline (4.2) at the right end of the left handle rod (4) is installed in cooperation with the left inner spline (3.4). The right handle outer spline (5.2) at the left end of the right handle rod (5) is installed in cooperation with the right inner spline (3.5). The handle rod spring (26) is installed between the left handle external spline (4.2) and the right handle external spline (5.2); the left rear end of the left handle rod (4) is provided with a left handle thread (4.1); the left middle sleeve (17) and the left handle thread (4.1) are installed in cooperation with each other to form a thread pair; the left handle (15) and the left middle sleeve (17) are installed in cooperation with each other to form a thread pair; the right rear end of the right handle rod (5) is provided with a right handle thread (5.1); the right middle sleeve (18) and the right handle thread (5.1) are installed in cooperation with each other to form a thread pair; the right handle (16) and the right middle sleeve (18) are installed in cooperation with each other to form a thread pair.

2. A rehabilitation walking aid according to claim 1, characterized in that: A swing arm rotating shaft (1.8) is transversely arranged in the middle of the positioning frame (1.3), an upper slot (1.9) is arranged at the upper end, and the upper slot (1.9) is located directly above the swing arm rotating shaft (1.8); a lower slot (1.7) is arranged at the rear side of the positioning frame (1.3), and the lower slot (1.7) is located directly behind the swing arm rotating shaft (1.8).

3. A rehabilitation walking aid according to claim 1, characterized in that: The left rear wheel (12) and the right rear wheel (13) have the same structure, both of which are universal caster structures.

4. A rehabilitation walking aid according to claim 1, characterized in that: The bottom surface of the brake groove (11.2) on the right wheel locking plate (11.1) is configured as an inclined surface structure.

5. A rehabilitation walking aid according to claim 1, characterized in that: The positioning ball (22) is provided with an external thread on its outer side, and a round ball is provided at its inner outer end, and a spring is provided inside the round ball. Under the elastic force of the spring, the round ball extends outward but cannot be separated.

6. A rehabilitation walking aid according to claim 1, characterized in that: The left end of the right pedal (9) is a flat plate structure, and the upper side of the flat plate structure is provided with anti-skid stripes, which can increase the friction force when the user steps on it.

7. A rehabilitation walking aid according to claim 1, characterized in that: The right brake wheel (23) is made of hard material, and the thickness of the right brake wheel (23) is slightly smaller than the width of the brake groove (11.2).

8. A rehabilitation walking aid according to claim 1, characterized in that: When the left pedal (8) and the right pedal (9) are flipped upward and in a vertical state, the left brake wheel and the right brake wheel (23) can respectively fall into the corresponding brake groove (11.2), thereby locking the rotation of the left front wheel (10) and the right front wheel (11); when the left pedal (8) and the right pedal (9) are flipped downward and in a horizontal state, during this process, the left brake wheel and the right brake wheel (23) slide out along the inclined structure at the bottom of the corresponding brake groove (11.2), thereby releasing the locking state of the left front wheel (10) and the right front wheel (11).

9. A rehabilitation walking aid according to claim 1, characterized in that: The seat (6.1) is provided with a sponge cushion, which provides a better riding experience for the user.

10. The rehabilitation walking aid according to claim 1, characterized in that: An actuating plate is arranged on the upper side of the handle rod limiting plate (19), and the actuating plate is convenient for applying force to rotate the handle rod limiting plate (19).

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