Foldable multifunctional walking-aid wheelchair

Abstract

The foldable multifunctional walking-aid wheelchair mainly comprises a left frame, a right frame, a left handle, a right handle and four wheels, the left frame and the right frame are of a symmetrical structure, the left handle and the right handle are installed at the upper ends of the two frames respectively, and a left brake handle and a right brake handle are installed on the front sides of the upper ends of the two frames respectively. The left front wheel and the right front wheel are installed on the front sides of the lower ends of the two frames respectively, the left rear wheel and the right rear wheel are installed on the rear sides of the lower ends of the two frames respectively, the three supporting rod sets which are not located on the same straight line are installed between the two frames, and the left backrest plate, the middle backrest plate and the right backrest plate are sequentially and rotationally connected and installed between the two frames. The middle seat cushion is rotatably connected with the middle backrest plate, the two sides of the middle seat cushion are rotatably connected with the left seat cushion and the right seat cushion respectively, the left pedal and the right pedal are rotatably installed at the front ends of the two frames respectively, the left front wheel and the right front wheel can be braked by pinching the left brake handle and the right brake handle, and a user can select a wheelchair mode, a walking aid mode or a folding mode according to needs.

Description

Technical Field

[0001] The invention relates to the technical field of rehabilitation wheelchairs, and in particular to a foldable multifunctional walking-assisting wheelchair. Background Art

[0002] The foldable multifunctional walking wheelchair integrates multiple functions in one, bringing many conveniences to users. The following are the main advantages of this multifunctional wheelchair: this wheelchair can be easily folded, convenient to carry and store, and can be easily handled whether it is for home use or traveling. The folded volume is small and does not take up space. It can be easily put into the trunk of a car or a corner of the home; it can be used as a walker to help the elderly or disabled people walk, and it can also be converted into a wheelchair when needed to provide a comfortable seat for users who sit for a long time. The conversion is simple and quick without complicated operations; the multifunctional walking wheelchair adopts ergonomic design to ensure the comfort of the user during use. The multifunctional walking wheelchair is also equipped with a brake device to ensure the safety of the user during assisted walking.

[0003] For the elderly, as they age, their physical functions gradually decline, and walking and sitting may become difficult. The portability, comfort and safety of the multifunctional walking wheelchair make it an ideal choice for the elderly to travel; for the disabled, the multifunctional walking wheelchair not only provides the convenience of travel, but also helps them better integrate into society and participate in various social activities; for rehabilitation patients, during the rehabilitation process, patients need to undergo various rehabilitation training, and the multifunctional walking wheelchair enables them to undergo walking rehabilitation training and accelerate the rehabilitation process; in summary, the foldable multifunctional walking wheelchair has significant advantages in terms of portability, comfort, safety and applicable population. This wheelchair not only meets the travel needs of the elderly and people with physical disabilities, but also provides them with a more convenient, comfortable and safe travel experience. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, the object of the present invention is to provide a foldable multifunctional walking-assisting wheelchair, which mainly comprises a left frame, a right frame, a left handle, a right handle, a left brake handle, a right brake handle, a right backrest board, a middle backrest board, a left cushion, a middle cushion, a right cushion, a left rear wheel, a right rear wheel, a left front wheel, a right front wheel, a left pedal, a right pedal and a left backrest board, and is characterized in that: the left frame is an internally hollow structure, a square notch is provided at the front end of the lower end of the left frame, a left pedal shaft is longitudinally provided in the notch, and the right frame and the left frame are left-right symmetrical structures; the left brake handle and the right brake handle are respectively mounted on the front sides of the upper ends of the left frame and the right frame, and the left front wheel and the right front wheel are respectively mounted under the two frames. The left rear wheel and the right rear wheel are respectively mounted on the rear sides of the lower ends of the two frames; the angle between the left rear handle and the left front handle in the left handle is 90 degrees, the left handle is rotatably mounted on the upper side of the left frame and can be locked, the right handle and the left handle form a left-right symmetrical structure, and the right handle is rotatably mounted on the upper side of the right frame and can be locked; the left lower support rod and the left lower sides of the two left upper support rods are rotatably connected to the inner side of the left frame, the right lower support rod and the right lower sides of the two right upper support rods are rotatably connected to the inner side of the right frame, the right lower support rod and the right lower sides of the two left upper support rods are respectively rotatably connected to the left lower sides of the right lower support rod and the two right upper support rods, thereby forming three groups of three support rod groups that are not in the same straight line, and each support rod group has A strut spring is installed; the left side of the left backrest plate is rotatably connected to the rear side of the left frame, the right side of the right backrest plate is rotatably connected to the rear side of the right frame, the two sides of the middle backrest plate are rotatably connected to the left backrest plate and the right backrest plate respectively, and the hook is rotatably installed on the rear side of the upper end of the middle backrest plate; the rear end of the middle seat cushion is rotatably connected to the front lower end of the middle backrest plate, and the two sides of the middle seat cushion are rotatably connected to the left seat cushion and the right seat cushion respectively; the upper side of the left pedal is provided with anti-slip stripes, and the left end of the left pedal is provided with a long hole inside, the left end of the left pedal is installed in the square notch at the front end of the left frame, and the left pedal shaft is located in the long hole at the left end of the left pedal; the right pedal and the left pedal are in a left-right symmetrical structure, and the right end of the right pedal is installed The left brake is installed at the front end of the left frame and forms a movable pair, the left brake spring is installed at the rear end of the left brake, the left brake line tube and a steel wire pull cable are installed between the left brake handle and the left brake, and squeezing the left brake handle can move the left brake backward and stop the rotation of the left front wheel; the right brake and the left brake are in a left-right symmetrical structure, the right brake is installed at the front end of the right frame and forms a movable pair, the right brake spring is installed at the rear end of the right brake, the right brake line tube and a steel wire pull cable are installed between the right brake handle and the right brake, and squeezing the right brake handle can move the right brake backward and stop the rotation of the right front wheel.

[0005] As a further solution of the present invention: a front positioning hole and a rear positioning hole are provided at the upper end of the left frame. The left handle knob is installed on the outer side of the left handle and forms a thread pair. The right end of the left handle knob can be inserted into the above-mentioned front positioning hole or rear positioning hole to realize the locking of the left handle.

[0006] As a further solution of the present invention: a front positioning hole and a rear positioning hole are provided at the upper end of the right frame. The right handle knob is installed on the outer side of the right handle and forms a thread pair. The left end of the right handle knob can be inserted into the above-mentioned front positioning hole or rear positioning hole to realize the locking of the right handle.

[0007] As a further solution of the present invention: both the left front wheel and the right front wheel are of a directional caster structure, and both the left rear wheel and the right rear wheel are of a swivel caster structure.

[0008] As a further solution of the present invention: the upper left support rod, the upper right support rod, the lower left support rod, and the lower right support rod are all of a sheet metal bending structure, and their transverse cross-section is in a "冂" shape.

[0009] As a further solution of the present invention: soft sponge pads are provided on the upper sides of the left seat cushion, the right seat cushion, and the middle seat cushion, so that users have a better riding experience.

[0010] As a further solution of the present invention: a left pedal socket is provided on the bottom side of the square notch at the front end of the left frame. A left pedal insert plate is provided on the outer side of the left end of the left pedal. The left pedal insert plate is aligned with the left pedal socket, and then the left pedal is moved downward so that the left pedal insert plate is inserted into the left pedal socket, thereby enabling the left pedal to maintain a vertical state.

[0011] As a further solution of the present invention: the rear end of the left brake is of an arc structure, and a rubber sheet is provided on the inner side of the arc structure. The rubber sheet can rub against the left front wheel to achieve a braking effect.

[0012] As a further solution of the present invention: a left pedal pressing block is provided on the lower side of the left end of the left pedal. The left pedal is pulled upward and then rotated 90° to the right so that the left pedal pressing block presses against the bottom surface of the square notch at the front end of the left frame, thereby enabling the left pedal to maintain a horizontal state.

[0013] The beneficial effects of the present invention: The multifunctional wheelchair has multiple modes for users to choose according to their needs. When the user lacks physical strength, the wheelchair mode can be adopted. The user can sit on the seat, and the multifunctional wheelchair can be pushed by an accompanying person for movement. When the user needs to do some proper exercise, the walking aid mode can be adopted. The user can hold the two handles with both hands to assist walking, and the two brakes help to improve the safety during assisted walking. When traveling by car, the multifunctional wheelchair can be folded. The folded multifunctional wheelchair can significantly reduce the space volume and is convenient for storage and transportation. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the left front overall structure when the present invention is in wheelchair mode.

[0015] Figure 2 It is a schematic diagram of the overall structure of the left rear when the present invention is in wheelchair mode.

[0016] Figure 3 It is a schematic diagram of the overall structure of the present invention when it is in the walking-assisting mode.

[0017] Figure 4 It is a schematic diagram of the overall structure of the present invention when it is in a folding mode.

[0018] Figure 5 It is a partially enlarged cross-sectional schematic diagram of the position of the left pedal in the present invention.

[0019] Figure 6 It is a partially enlarged cross-sectional schematic diagram of the position of the left pedal in the present invention.

[0020] Figure 7 It is a partially enlarged cross-sectional schematic diagram of the left front wheel position in the present invention.

[0021] Reference numerals: 1 left frame, 101 left upper connecting ear, 102 left lower connecting ear, 103 left pedal shaft, 104 left pedal socket, 105 left cable tube baffle, 106 left brake guide channel, 2 right frame, 201 right upper connecting ear, 202 right lower connecting ear, 301 left rear handle, 302 left front handle, 401 right rear handle, 402 right front handle, 5 left handle knob, 6 right handle knob, 7 left brake handle, 8 right brake handle, 9 right backrest board, 10 middle backrest board, 11 left seat cushion , 12 middle seat cushion, 13 right seat cushion, 14 left lower support rod, 15 right lower support rod, 16 left rear wheel, 17 right rear wheel, 18 left front wheel, 19 right front wheel, 20 left brake, 2001 brake guide rod, 21 right brake, 22 left pedal, 2201 left pedal plug plate, 2202 left pedal pressure block, 23 right pedal, 24 left backrest board, 25 hook, 26 lower support rod spring, 27 right upper support rod, 28 upper support rod spring, 29 left upper support rod, 30 left brake spring, 31 left brake line tube. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-7As shown, a foldable multifunctional walking wheelchair mainly includes a left frame 1, a right frame 2, a left handle, a right handle, a left handle knob 5, a right handle knob 6, a left brake handle 7, a right brake handle 8, a right backrest board 9, a middle backrest board 10, a left cushion 11, a middle cushion 12, a right cushion 13, a left lower support rod 14, a right lower support rod 15, a left rear wheel 16, a right rear wheel 17, a left front wheel 18, a right front wheel 19, a left brake 20, a right brake 21, a left pedal 22, a right pedal 23, a left backrest board 24, a hook 25, a lower support rod spring 26, a right upper support rod 27, an upper support rod spring 28, a left upper support rod 29, and a left brake spring 30. A left brake line tube 31, characterized in that: the left frame 1 is an internally hollow structure, and two positioning holes are arranged at its upper end, namely a front positioning hole and a rear positioning hole, and two left upper connecting ears 101 of the same height are arranged on the inner side of the left frame 1, and a left lower connecting ear 102 is arranged on the inner side of the lower rear end of the left frame 1, and a square notch is arranged on the front side of the lower end of the left frame 1, and a left pedal socket 104 is arranged on the bottom side of the notch, and a left pedal shaft 103 is arranged longitudinally above the left pedal socket 104, and a left line tube baffle 105 is arranged inside the front side of the lower end of the left frame 1, and the left line tube baffle 105 A through left brake guide channel 106 is provided at the rear of the right frame 2; the right frame 2 and the left frame 1 are of a left-right symmetrical structure. The right frame 2 is an internally hollow structure, and a front positioning hole and a rear positioning hole are also provided at its upper end. Two right upper connecting ears 201 of the same height are provided on the inner side of the right frame 2, and a right lower connecting ear 202 is provided on the inner side of the lower rear end of the right frame 2. A square notch is provided on the front side of the lower end of the right frame 2, and a right pedal socket is provided on the bottom side of the notch. A right pedal shaft is longitudinally provided above the right pedal socket, and a right wire tube baffle is provided inside the front side of the lower end of the right frame 2. A through right brake guide channel is provided at the rear of the wire tube baffle; the left brake handle 7 is fixedly installed on the front side of the upper end of the left frame 1, and a lever structure is provided inside the left brake handle 8, the structure of the right brake handle 8 is the same as the left brake handle 7, and the right brake handle 8 is fixedly installed on the front side of the upper end of the right frame 2; the left rear wheel 16 is installed on the rear side of the lower end of the left frame 1, and the right rear wheel 17 is installed on the rear side of the lower end of the right frame 2. Both the left rear wheel 16 and the right rear wheel 17 are universal caster structures, the left front wheel 18 is installed on the front side of the lower end of the left frame 1, and the right front wheel 19 is installed on the front side of the lower end of the right frame 2. Both the left front wheel 18 and the right front wheel 19 are fixed caster structures.

[0024] like Figure 1 , Figure 2As shown, the left handle includes a left rear handle 301 and a left front handle 302, the angle between the left rear handle 301 and the left front handle 302 is 90 degrees, the left handle is rotatably mounted on the upper side of the left frame 1, and a threaded hole is transversely arranged on the left handle; the left end of the left handle knob 5 is provided with a knob structure, which is convenient for the user to apply force to rotate, and the right end of the left handle knob 5 is a threaded rod structure, and the left handle knob 5 is installed in the threaded hole of the left handle to form a threaded pair; the right handle includes a right rear handle 401 and a right front handle 402, the angle between the right rear handle 401 and the right front handle 402 is 90 degrees, the right handle is rotatably mounted on the upper side of the right frame 2, and a threaded hole is transversely arranged on the right handle; the structure of the right handle knob 6 is the same as that of the left handle knob 5, and the right handle knob 6 is installed in the threaded hole of the right handle to form a threaded pair; the multifunctional walking wheelchair is in the wheelchair When the multifunctional walking wheelchair is in the walking assist mode, the left handle and the right handle are flipped forward by 90°, the left handle knob 5 is tightened and the right end is inserted into the front positioning hole at the upper end of the left frame 1, the right handle knob 6 is tightened and the left end is inserted into the front positioning hole at the upper end of the right frame 2, so that the left rear handle 301 and the right rear handle 401 are in a horizontal state. At this time, the accompanying person can hold the left rear handle 301 and the right rear handle 401 with both hands and push the multifunctional walking wheelchair to walk; when the multifunctional walking wheelchair is in the walking assist mode, the left handle and the right handle are flipped forward by 90°, the left handle knob 5 is tightened and the right end is inserted into the rear positioning hole at the upper end of the left frame 1, the right handle knob 6 is tightened and the left end is inserted into the rear positioning hole at the upper end of the right frame 2, so that the left front handle 302 and the right front handle 402 are in a horizontal state. At this time, the user can hold the left front handle 302 and the right front handle 402 with both hands to achieve assisted walking.

[0025] like Figure 2As shown, the left lower support rod 14 is a plate bending structure with a U-shaped cross-section horizontally. The lower left side of the left end of the left lower support rod 14 is rotatably connected to the left lower connecting ear 102; the right lower support rod 15 is a plate bending structure with a U-shaped cross-section horizontally, and the width of the right lower support rod 15 is slightly larger than that of the left lower support rod 14. The lower right side of the right end of the right lower support rod 15 is rotatably connected to the right lower connecting ear 202, and the lower left side of the left end of the right lower support rod 15 is rotatably connected to the lower right side of the right end of the left lower support rod 14; the lower support rod spring 26 is a tension spring. The left end of the lower support rod spring 26 is connected to a position near the right end of the inner bottom side of the left lower support rod 14, and the right end of the lower support rod spring 26 is connected to a position near the right end of the inner bottom side of the right lower support rod 15. Thus, when the multi-functional walking wheelchair is in the open state, the left lower support rod 14 and the right lower support rod 15 are on the same straight line, and under the pulling force of the lower support rod spring 26, the upper left side of the left end of the right lower support rod 15 and the upper right side of the right end of the left lower support rod 14 are in a mutually pressing state, so that the left frame 1 and the right frame 2 maintain a fixed width and prevent them from approaching each other; when it is necessary to fold the multi-functional walking wheelchair, it is necessary to pull upward the connection position of the left lower support rod 14 and the right lower support rod 15 to make the lower support rod spring 26 cross the connecting rotating shaft of the right lower support rod 15 and the left lower support rod 14. Then, under the pulling force of the lower support rod spring 26, the left lower support rod 14 and the right lower support rod 15 rotate and approach each other. During this process, the left frame 1 and the right frame 2 approach each other, and finally the folding of the multi-functional walking wheelchair is completed.

[0026] As Figure 3As shown, the number of the left upper support rods 29 is two. The left upper support rods 29 are plate bending structures, and their transverse cross-sections are in the shape of "冂". The lower sides of the left ends of the two left upper support rods 29 are respectively rotatably connected to the two left upper connecting ears 101. The number of the right upper support rods 27 is two. The right upper support rods 27 are plate bending structures, and their transverse cross-sections are in the shape of "冂". And the width of the right upper support rods 27 is slightly larger than that of the left upper support rods 29. The lower sides of the right ends of the two right upper support rods 27 are respectively rotatably connected to the two right upper connecting ears 201. The lower sides of the right ends of the two left upper support rods 29 are respectively rotatably connected to the lower sides of the left ends of the two right upper support rods 27. The number of the upper support rod springs 28 is two. The two upper support rod springs 28 are respectively installed between the two left upper support rods 29 and the right upper support rods 27. And the left end of each upper support rod spring 28 is respectively connected to the position near the left end of the inner top side of the corresponding left upper support rod 29, and the right end of each upper support rod spring 28 is respectively connected to the position near the left end of the inner top side of the corresponding right upper support rod 27. Thus, when the multi-functional walking wheelchair is in the open state, the left upper support rod 29 and the corresponding right upper support rod 27 are on the same straight line. And under the pulling force of the two upper support rod springs 28, the upper side of the right end of the left upper support rod 29 and the upper side of the left end of the corresponding right upper support rod 27 are in a state of being mutually pressed, so as to keep the left frame 1 and the right frame 2 at a fixed width and prevent them from approaching each other. When it is necessary to fold the multi-functional walking wheelchair, it is necessary to pull upward the connection position of the left upper support rod 29 and the right upper support rod 27 to make the two upper support rod springs 28 cross over the connection rotating shafts of the left upper support rod 29 and the corresponding right upper support rod 27. Then, under the pulling force of the two upper support rod springs 28, the left upper support rod 29 and the corresponding right upper support rod 27 rotate and approach each other. During this process, the left frame 1 and the right frame 2 approach each other, and finally the folding of the multi-functional walking wheelchair is completed.

[0027] As Figure 1 , Figure 2As shown, the right backrest plate 9 is an arc-shaped plate-like structure, a weight-reducing hole is arranged inside the right backrest plate 9, and the right side of the right backrest plate 9 is rotatably connected to the rear side of the right frame 2; the middle backrest plate 10 is a narrow plate-like structure, the right side of the middle backrest plate 10 is rotatably connected to the left side of the right backrest plate 9, and the hook 25 is rotatably installed on the rear side of the upper end of the middle backrest plate 10; the left backrest plate 24 is a left-right symmetrical structure with the right backrest plate 9, and the left side of the left backrest plate 24 is rotatably connected to the rear side of the left frame 1; the lower side of the left seat cushion 11 is a flat plate-like structure, and a soft sponge pad is arranged on its upper side, so that the user has a better riding experience, the front end of the left seat cushion 11 is a straight structure, and the rear end is an arc structure The right seat cushion 13 and the left seat cushion 11 are symmetrical in structure. The lower side of the right seat cushion 13 is a flat plate structure, and a soft sponge pad is arranged on its upper side. The front end of the right seat cushion 13 is a straight structure, and the rear end is an arc structure. The middle seat cushion 12 is a slat-shaped structure, and a soft sponge pad is arranged on its upper side. The rear end of the middle seat cushion 12 is rotatably connected to the front lower end of the middle backrest plate 10, and the left side of the middle seat cushion 12 is rotatably connected to the right side of the left seat cushion 11, and the right side of the middle seat cushion 12 is rotatably connected to the left side of the right seat cushion 13. When the multifunctional walking wheelchair is in wheelchair mode, the hook 25 is flipped backwards and is in a horizontal state, so that the user can hang some personal belongings on the hook 25. The left seat cushion 11, the middle seat cushion 12 and the right seat cushion 13 are flipped forward to the upper sides of the two left upper support rods 29 and the right upper support rod 27, so that the seat composed of the left seat cushion 11, the middle seat cushion 12 and the right seat cushion 13 is in a horizontal state and can be sat on by the user, and the backrest composed of the left backrest board 24, the middle backrest board 10 and the right backrest board 9 can be leaned on by the user, and then the accompanying person can push the multi-functional walking wheelchair to move; when the multi-functional walking wheelchair is in the walking mode, the left seat cushion 11, the middle seat cushion 12 and the right seat cushion 13 are flipped upward and are in a vertical state, the hook 25 is reversed forward and hooked on the upper end of the middle seat cushion 12, the left seat cushion 11 and the right seat cushion 13 are rotated and respectively attached to the left backrest board 24 and the right backrest The left and right seat cushions 11, 13 are clamped inside the left and right backrest plates 24, 9, and the multifunctional walking wheelchair can effectively reduce the occupied space after being folded, which is convenient for the storage and transportation of the multifunctional walking wheelchair.

[0028] like Figure 5 , Figure 6As shown, the left pedal 22 is provided with anti-slip stripes on the upper side, a longitudinally penetrating long hole is horizontally provided inside the left end of the left pedal 22, a left pedal plug plate 2201 is provided outside the left end of the left pedal 22, a left pedal pressing block 2202 is provided on the lower side of the left end of the left pedal 22, the left end of the left pedal 22 is installed in the square notch on the front side of the left frame 1, and the left pedal shaft 103 is located in the long hole at the left end of the left pedal 22; the right pedal 23 and the left pedal 22 are in a left-right symmetrical structure, The upper side of the right pedal 23 is provided with anti-slip stripes, the right end of the right pedal 23 is provided with a longitudinally penetrating long hole horizontally, the left end of the right pedal 23 is provided with a right pedal plug plate, the lower side of the right end of the right pedal 23 is provided with a right pedal pressing block, the left end of the right pedal 23 is installed in the square notch on the front side of the right frame 2, and the right pedal shaft is located in the long hole at the right end of the right pedal 23; when the multifunctional walking-assisting wheelchair is in the walking-assisting mode and the folding mode, the left pedal 22 and the right pedal 23 need to be in a vertical state, Pull the left pedal 22 to the right, then rotate it upwards by 90° so that the left pedal plug 2201 is aligned with the left pedal socket 104, then move the left pedal 22 downward so that the left pedal plug 2201 is inserted into the left pedal socket 104, so that the left pedal 22 is kept in a vertical state; then pull the right pedal 23 to the left, then rotate it upwards by 90° so that the right pedal plug is aligned with the left pedal socket, then move the right pedal 23 downward so that the right pedal plug is inserted into the left pedal socket, so that the right pedal 23 is kept in a vertical state When the multifunctional walking wheelchair is in wheelchair mode, the left pedal 22 and the right pedal 23 need to be in a horizontal state so that the user can place his left and right feet. Pull the left pedal 22 upward, then turn it 90° to the right to press the left pedal pressing block 2202 onto the bottom surface of the square notch on the front side of the left frame 1, so that the left pedal 22 remains in a horizontal state; then pull the right pedal 23 upward, then turn it 90° to the left to press the right pedal pressing block onto the bottom surface of the square notch on the front side of the right frame 2, so that the right pedal 23 remains in a horizontal state.

[0029] like Figure 7As shown, the rear end of the left brake 20 is an arc structure, and a rubber sheet is arranged on the inner side of the arc structure, which can rub against the left front wheel 18 and achieve a braking effect. The front end of the left brake 20 is provided with a brake guide rod 2001, and the brake guide rod 2001 is installed in the left brake guide channel 106 and constitutes a moving pair; the left brake spring 30 is a pressure spring, and the left brake spring 30 is installed between the front end of the brake guide rod 2001 and the left wire tube baffle 105; the left brake wire tube 31 is a wire tube structure with certain flexibility but cannot axially shrink, and a steel wire is arranged inside it. The upper end of the left brake wire tube 31 is connected to the rear end of the left brake handle 7, and the left The lower end of the brake wire tube 31 passes through the left frame 1 and is installed on the front side of the left wire tube baffle 105. The upper end of the steel wire pull cable inside the left brake wire tube 31 is connected to the lever structure in the left brake handle 7. The lower end of the steel wire pull cable passes through the left brake spring 30 and is connected to the front end of the brake guide rod 2001. When the left brake handle 7 is squeezed, the steel wire pull cable in the left brake wire tube 31 is pulled, and the brake guide rod 2001 drives the left brake 20 to move backward. The rubber sheet on the inside of the left brake 20 presses the left front wheel 18 to achieve the braking effect of the left front wheel 18. After releasing the grip of the left brake handle 7, the left brake spring 30 pushes the left brake 20 to move forward and releases the brake on the left front wheel 18.

[0030] The right brake 21 and the left brake 20 are in a left-right symmetrical structure. The rear end of the right brake 21 is an arc structure, and a rubber sheet is arranged on the inner side of the arc structure, which can rub against the right front wheel 19 and achieve a braking effect. A brake guide rod is arranged at the front end of the right brake 21, and the brake guide rod is installed in the right brake guide channel and constitutes a moving pair; the right brake spring is a pressure spring, and the right brake spring is installed between the front end of the brake guide rod and the right wire tube baffle; the right brake wire tube has the same structure as the left brake wire tube 31, and a steel wire pull wire is arranged inside the right brake wire tube, and the upper end of the right brake wire tube is connected to the rear end of the right brake handle 8 The lower end of the right brake line tube passes through the right frame 2 and is installed on the front side of the right line tube baffle. The upper end of the steel wire pull line inside the right brake line tube is connected to the lever structure in the right brake handle 8. The lower end of the steel wire pull line passes through the right brake spring and is connected to the front end of the brake guide rod. When the right brake handle 8 is squeezed, the steel wire pull line in the right brake line tube is pulled, and the brake guide rod of the right brake 21 moves backward, and the rubber sheet on the inside of the right brake 21 presses the right front wheel 19 to achieve the braking effect of the right front wheel 19. After releasing the right brake handle 8, the right brake spring pushes the right brake 21 to move forward and releases the brake on the right front wheel 19.

[0031] like Figure 1As shown, when the multifunctional walking wheelchair is in wheelchair mode, the left frame 1 and the right frame 2 are opened to both sides. In this process, the two left upper struts 29 and the two right upper struts 27 are opened to each other, and at the same time, the left lower strut 14 and the right lower strut 15 are opened to each other; then, the connection position of the two left upper struts 29 and the two right upper struts 27 is pressed downward, so that the upper right end side of the left upper strut 29 and the upper left end side of the corresponding right upper strut 27 are in a mutually compressed state under the tension of the upper strut spring 28, and then the connection position of the left lower strut 14 and the right lower strut 15 is pressed downward, so that the upper right end side of the left lower strut 14 and the upper left end side of the right lower strut 15 are in a mutually compressed state under the tension of the lower strut spring 26, so that the three groups of struts form a three-point support principle. , so that the left frame 1 and the right frame 2 maintain a stable unfolded state; then flip the left handle and the right handle backwards 90°, tighten the left handle knob 5 and insert the right end thereof into the front positioning hole at the upper end of the left frame 1, tighten the right handle knob 6 and insert the left end thereof into the front positioning hole at the upper end of the right frame 2; then flip the hook 25 backwards, flip the left seat cushion 11, the middle seat cushion 12 and the right seat cushion 13 forwards to the upper sides of the two left upper support rods 29 and the right upper support rod 27, flip the left pedal 22 and the right pedal 23 to a horizontal state, so that the user can sit on the seat, the user can place the left foot on the upper side of the left pedal 22, and the right foot on the upper side of the right pedal 23, and then the accompanying person can hold the left rear handle 301 and the right rear handle 401 with both hands and push the multifunctional walking wheelchair to walk.

[0032] like Figure 3 As shown, when the multifunctional walking-assisting wheelchair is in the walking-assisting mode, on the basis of the wheelchair mode, the left handle and the right handle are flipped forward 90°, the left handle knob 5 is tightened and the right end thereof is inserted into the rear positioning hole at the upper end of the left frame 1, the right handle knob 6 is tightened and the left end thereof is inserted into the rear positioning hole at the upper end of the right frame 2, so that the left front handle 302 and the right front handle 402 are in a horizontal state; then the left seat cushion 11, the middle seat cushion 12 and the right seat cushion 13 are flipped upward and in a vertical state, the hook 25 is reversed forward and hooks the upper end of the middle seat cushion 12, the left seat cushion 11 and the right seat cushion 13 are rotated and respectively adhered to the inner sides of the left backrest board 24 and the right backrest board 9; then the left pedal 22 and the right pedal 23 are flipped upward 90° to a vertical state; thereafter, the user can hold the left front handle 302 and the right front handle 402 with both hands to achieve assisted walking.

[0033] like Figure 4As shown, when the multifunctional walking-assist wheelchair is in the folding mode, on the basis of the walking-assist mode, the connection position of the left lower support rod 14 and the right lower support rod 15 is pulled upwards, so that the lower support rod spring 26 passes over the connection shaft between the right lower support rod 15 and the left lower support rod 14, and then the connection position of the left upper support rod 29 and the right upper support rod 27 is pulled upwards, so that the two upper support rod springs 28 pass over the connection shaft between the left upper support rod 29 and the corresponding right upper support rod 27, and then under the pulling force of the lower support rod spring 26 and the two upper support rod springs 28, the three groups of support rods rotate and approach each other, and in this process, the left frame 1 and the right frame 2 approach each other, and finally the folding of the multifunctional walking-assist wheelchair is completed.

Claims

1. A foldable multifunctional walking wheelchair, mainly comprising a left frame (1), a right frame (2), a left handle, a right handle, a left brake handle (7), a right brake handle (8), a right backrest board (9), a middle backrest board (10), a left cushion (11), a middle cushion (12), a right cushion (13), a left rear wheel (16), a right rear wheel (17), a left front wheel (18), a right front wheel (19), a left pedal (22), a right pedal (23), and a left backrest board (24), characterized in that: The left frame (1) is a hollow structure. A square notch is provided at the front end of the lower end of the left frame (1). A left pedal shaft (103) is longitudinally provided in the notch. The right frame (2) and the left frame (1) are symmetrical structures. The left brake handle (7) and the right brake handle (8) are respectively mounted on the front sides of the upper ends of the left frame (1) and the right frame (2). The left front wheel (18) and the right front wheel (19) are respectively mounted on the front sides of the lower ends of the two frames. The left rear wheel (16) and the right rear wheel (17) are respectively mounted on the rear sides of the lower ends of the two frames. The angle between the left rear handle (301) and the left front handle (302) in the left handle is 90°. The left handle is rotatably mounted on the upper side of the left frame (1). The right handle and the left handle are symmetrical in structure. The right handle is rotatably mounted on the upper side of the right frame (2) and can be locked. The lower left sides of the left lower support rod (14) and the two upper left support rods (29) are rotatably connected to the inner side of the left frame (1). The lower right sides of the right lower support rod (15) and the two upper right support rods (27) are rotatably connected to the inner side of the right frame (2). The lower right sides of the left lower support rod (14) and the two upper left support rods (29) are respectively rotatably connected to the lower left sides of the right lower support rod (15) and the two upper right support rods (27). Thus, three groups of three support rod groups that are not in the same straight line are formed. A support rod spring is installed in each support rod group. The left side of the left backrest plate (24) is connected to the left The rear side of the frame (1) is rotatably connected, the right side of the right backrest plate (9) is rotatably connected to the rear side of the right frame (2), the two sides of the middle backrest plate (10) are respectively rotatably connected to the left backrest plate (24) and the right backrest plate (9), and the hook (25) is rotatably installed on the rear side of the upper end of the middle backrest plate (10); the rear end of the middle seat cushion (12) is rotatably connected to the front lower end of the middle backrest plate (10), and the two sides of the middle seat cushion (12) are respectively rotatably connected to the left seat cushion (11) and the right seat cushion (13); the upper side of the left pedal (22) is provided with anti-slip stripes, the left end of the left pedal (22) is provided with a long hole inside, the left end of the left pedal (22) is installed in the square notch at the front end of the left frame (1), and the left pedal The plate shaft (103) is located in the long hole at the left end of the left pedal (22); the right pedal (23) and the left pedal (22) form a left-right symmetrical structure, the right end of the right pedal (23) is installed in the square notch at the front end of the right frame (2), and the right pedal shaft is located in the long hole at the right end of the right pedal (23); the left brake (20) is installed at the front end of the left frame (1) and forms a moving pair, the left brake spring (30) is installed at the rear end of the left brake (20), the left brake line tube (31) and the steel wire pull wire arranged inside it are installed between the left brake handle (7) and the left brake (20), and squeezing the left brake handle (7) can make the left brake (20) move backward and stop the rotation of the left front wheel (18);The right brake (21) and the left brake (20) are symmetrical in structure. The right brake (21) is installed at the front end of the right frame (2) and forms a moving pair. The right brake spring is installed at the rear end of the right brake (21). The right brake line tube and the steel wire pull wire arranged inside the right brake line tube are installed between the right brake handle (8) and the right brake (21). By squeezing the right brake handle (8), the right brake (21) can be moved backward and the rotation of the right front wheel (19) can be stopped.

2. A foldable multifunctional walking-assisting wheelchair according to claim 1, characterized in that: The upper end of the left frame (1) is provided with a front positioning hole and a rear positioning hole. The left handle knob (5) is installed on the outer side of the left handle and forms a thread pair. The right end of the left handle knob (5) can be inserted into the above-mentioned front positioning hole or rear positioning hole to lock the left handle.

3. A foldable multifunctional walking-assisting wheelchair according to claim 1, characterized in that: The upper end of the right frame (2) is provided with a front positioning hole and a rear positioning hole. The right handle knob (6) is installed on the outer side of the right handle and forms a thread pair. The left end of the right handle knob (6) can be inserted into the above-mentioned front positioning hole or rear positioning hole to lock the right handle.

4. The foldable multifunctional walking-assist wheelchair according to claim 1, characterized in that: Both the left front wheel (18) and the right front wheel (19) are of the structure of fixed caster wheels, and both the left rear wheel (16) and the right rear wheel (17) are of the structure of swivel caster wheels.

5. The foldable multifunctional walking-assisting wheelchair according to claim 1, characterized in that: The upper left brace (29), upper right brace (27), lower left brace (14), and lower right brace (15) are all plate bending structures, and their transverse cross-sections are in the shape of "冂".

6. The foldable multifunctional walking-assisting wheelchair according to claim 1, characterized in that: Soft sponge pads are provided on the upper sides of the left seat cushion (11), right seat cushion (13), and middle seat cushion (12) to provide users with a better riding experience.

7. The foldable multifunctional walking-assisting wheelchair according to claim 1, characterized in that: A left pedal socket (104) is provided on the bottom side of the square notch at the front end of the left frame (1). A left pedal insert plate (2201) is provided on the outer part of the left end of the left pedal (22). The left pedal insert plate (2201) is aligned with the left pedal socket (104), and then the left pedal (22) is moved downward so that the left pedal insert plate (2201) is inserted into the left pedal socket (104), thereby enabling the left pedal (22) to maintain a vertical state.

8. The foldable multifunctional walking-assisting wheelchair according to claim 1, characterized in that: The rear end of the left brake (20) is of an arc structure, and a rubber sheet is provided on the inner side of the arc structure. The rubber sheet can rub against the left front wheel (18) to achieve a braking effect.

9. The foldable multifunctional walking-assisting wheelchair according to claim 1, characterized in that: A left pedal pressing block (2202) is provided on the lower left side of the left pedal (22). The left pedal (22) is pulled upward and then rotated 90° to the right so that the left pedal pressing block (2202) presses on the bottom surface of the square notch at the front end of the left frame (1), thereby enabling the left pedal (22) to maintain a horizontal state.

Images