Protective assembly and manual wheelchair thereof

Abstract

The utility model relates to the technical field of rehabilitation equipment, and discloses a protection assembly and a manual wheelchair thereof, the protection assembly comprises a supporting plate, the supporting plate is fixedly arranged below a cushion, a pushing mechanism is movably arranged on the bottom surface of the supporting plate, and the pushing mechanism comprises a gear, a rack, a push rod and a connecting rod; the pop-up protection mechanism is arranged in the push rod in a sliding mode and comprises a fixing rod, a baffle, a sliding column and a sliding block, the pushing mechanism is arranged, a motor is used for driving a gear and a rack to be meshed, the rack pushes a connecting rod, and therefore the connecting rod pushes the push rod, and the push rod drives the sliding column to slide on the walking groove plate; the baffles are pushed to reach a vertical angle through the shape of the moving groove plate, then the sliding block is tightened to drive the fixing rod, the fixing rod pulls the two baffles to be separated, unfolded shielding is achieved, at the moment, the pushing mechanism is matched with the pop-up protection mechanism to shield and protect the two sides of a user, and therefore external impact is blocked for the user; therefore, the effect of protecting the knees is achieved, and danger is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of rehabilitation equipment, and in particular relates to a protective component and a manual wheelchair thereof. Background Art

[0002] A manual wheelchair is an assistive walking tool designed for people with limited mobility. It is equipped with wheels and needs to be manually operated by the user. It is mainly used to help them with daily activities, social participation and medical rehabilitation. Manual wheelchairs are widely used in daily life, public places, social activities, medical fields and other scenarios.

[0003] The prior art discloses a manual wheelchair (CN212090004U), comprising a seat cushion, a support block welded to the bottom of the seat cushion, a movable groove opened inside the seat cushion, a hand brake mechanism arranged inside the movable groove, a rotating mechanism arranged on the left side of the seat cushion, the front and rear of the seat cushion are rotatably connected to a frame, a foot pedal is rotatably connected to the surface of the frame, a baffle is welded to the top of the support block, an armrest is welded to the top of the baffle, an emergency button is plugged into the front of the armrest, and a storage bag is welded to the surface of the baffle. The utility model provides a manual wheelchair. When the wheelchair goes downhill or encounters an emergency, the handle can be pushed, the handle drives the pull rod, the pull rod drives the transmission block, and the transmission block drives the brake block, which will firmly press against the rotating shaft, so that in an emergency, the user can brake by himself, thereby ensuring the safety of the user.

[0004] After searching, it was found that the device lacked protection measures for the knees when in use, which caused the user's knees to be exposed on both sides of the wheelchair. Once an emergency occurred, the user's knees would be impacted first, causing danger; furthermore, the device did not take into account the impact of inertia on the user when braking, and therefore did not protect the user. This caused the inertia of the brakes to make the user's center of gravity unstable, leading to falls, and thus causing injuries to the user.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the above technical problem that users have no protective measures, the basic concept of the technical solution adopted by the utility model is:

[0007] A protective component comprising

[0008] A support plate, the support plate is fixedly arranged under the seat cushion,

[0009] A pushing mechanism, which is movably arranged on the bottom surface of the support plate, and comprises a gear, a rack, a push rod and a connecting rod. The gear is rotatably arranged on the bottom surface of the support plate, the rack and the push rod are both slidably arranged on the bottom of the support plate, and a connecting rod is rotatably arranged between the rack and the push rod;

[0010] A pop-up protection mechanism, the pop-up protection mechanism is slidably arranged in the push rod, the pop-up protection mechanism includes a fixed rod, a baffle, a sliding column and a slider, the sliding column is fixedly arranged at the bottom of the slider, the fixed rod is rotatably arranged between the push rod and the baffle, the baffle is rotatably arranged on the push rod, and the slider is slidably arranged in the push rod.

[0011] As a preferred embodiment of the present invention, three cylinders are evenly distributed at the bottom of the support plate, the support plate is fixedly connected to the bottom plate through the cylinders at both ends, two positioning groove plates are fixed on the bottom surface of the bottom plate, the positioning groove plates are symmetrically arranged at both ends of the bottom plate, two arc-shaped grooves are symmetrically opened at the top of the support plate, and two restraint belts are installed on the top surface of the support plate, and the two restraint belts are respectively fixed above the two arc-shaped grooves.

[0012] As a preferred embodiment of the present invention, the cylinder at the center of the bottom surface of the support plate is rotatably connected to a gear through a bearing, there are two symmetrically arranged racks, the two racks are respectively arranged on both sides of the top surface of the bottom plate, the two racks are symmetrically arranged at an oblique angle with the gear as the symmetry point, and the two racks are meshed and driven with the same gear.

[0013] As a preferred embodiment of the present invention, a through hole is opened in the bottom plate, a circular plate is fixedly connected to the bottom of the through hole, a motor is fixedly arranged above the circular plate, the motor is fixedly arranged in the through hole, the output end of the motor is connected to the bottom surface of the gear, sliding grooves are respectively opened on both sides of the bottom plate, a sliding seat is slidably connected in the sliding groove, and the sliding seat is fixedly connected to the bottom surface of the rack.

[0014] As a preferred embodiment of the present invention, the sliding seat is of a Y-shaped structure, a rotating column is fixedly connected inside the sliding seat, one end of a connecting rod is rotatably connected to the sliding seat through the rotating column, a square convex block is fixedly arranged on one side of the push rod close to the connecting rod, a shaft column is fixedly connected to the bottom surface of the square convex block, and the other end of the connecting rod is rotatably connected to the push rod through the shaft column.

[0015] As a preferred embodiment of the present invention, an arc-shaped slideway is opened inside the positioning groove plate, through holes are opened at both ends of the push rod, a sliding opening is opened between the two through holes, the push rod is rotatably connected to the cylinder at the bottom of the support plate through the through hole, the sliding column slides in the arc-shaped slideway, and the slider slides in the sliding opening.

[0016] As a preferred embodiment of the present utility model, a short column is fixedly connected above the slider. One end of two fixed rods is rotatably connected to the short column through a bearing. A fixed column is fixedly connected in a rotating hole at the other end of the push rod. The baffle is composed of a short ring column and a rectangular plate. The fixed column is rotatably connected to the short ring column of the baffle. There are two baffles, and the two baffles are symmetrically arranged at the upper and lower ends of the fixed column with the push rod as the center. A hinge seat is fixedly arranged on one side of the baffle close to the push rod, and the other end of the fixed rod is rotatably connected to the hinge seat.

[0017] A manual wheelchair includes a manual wheelchair body. All the above-mentioned protection components are fixedly provided at the bottom of the manual wheelchair body, and a support plate is fixedly connected to the bottom surface of the manual wheelchair body.

[0018] The present utility model has the following beneficial effects compared with the prior art:

[0019] 1. By setting a pushing mechanism, the motor drives the engagement of the gear and the rack, and the rack pushes the connecting rod, so that the connecting rod pushes the push rod. The push rod is pushed to drive the sliding column to slide on the positioning groove plate. Then, the shape of the positioning groove plate is used to push the baffle to a vertical angle, and then the slider is tightened to drive the fixed rod, and further the fixed rod pulls the two baffles apart to realize the unfolded shielding. At this time, the pushing mechanism cooperates with the pop-up protection mechanism to shield and protect the two sides of the user, so as to block the external impact on the user, and further realize the function of protecting the knees, thus avoiding danger.

[0020] 2. By setting a support plate, the arc-shaped groove on the support plate adapts to the legs of the user, and then the restraint belt is used to restrain the user, which increases the protection of the patient, avoids the inertia of the brake from making the user unstable in the center of gravity, and avoids falling and thus getting injured.

[0021] The following further describes in detail the specific embodiments of the present utility model with reference to the drawings. Description of the Drawings

[0022] In the drawings:

[0023] Figure 1 is the overall schematic diagram of the present utility model;

[0024] Figure 2 is the schematic diagram of the support frame structure of the present utility model;

[0025] Figure 3 is the overall top view schematic diagram of the present utility model;

[0026] Figure 4 is the schematic diagram of the pushing mechanism of the present utility model;

[0027] Figure 5This is a schematic diagram of the disassembly and assembly of the protection plate and push rod of the present utility model.

[0028] In the figure: 10, support plate; 11, bottom plate; 12, position adjustment groove plate; 13, gear; 14, rack; 15, push rod; 16, fixed rod; 17, baffle; 18, sliding seat; 19, motor; 20, connecting rod; 21, fixed column; 22, sliding column; 23, slider; 24, restraint strap. Specific embodiments

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model.

[0030] A protection component and its manual wheelchair, as Figure 1 , Figure 3 , Figure 4 and Figure 5 shown, include a support plate 10, the support plate 10 is fixedly arranged under the seat cushion, a pushing mechanism, the pushing mechanism is movably arranged on the bottom surface of the support plate 10, the pushing mechanism includes a gear 13, a rack 14, a push rod 15 and a connecting rod 20, the gear 13 is rotatably arranged on the bottom surface of the support plate 10, the rack 14 and the push rod 15 are both slidably arranged at the bottom of the support plate 10, and a connecting rod 20 is rotatably arranged between the rack 14 and the push rod 15; a pop-up protection mechanism, the pop-up protection mechanism is slidably arranged in the push rod 15, the pop-up protection mechanism includes a fixed rod 16, a baffle 17, a sliding column 22 and a slider 23, the sliding column 22 is fixedly arranged at the bottom of the slider 23, a fixed rod 16 is rotatably arranged between the push rod 15 and the baffle 17, the baffle 17 is rotatably arranged on the push rod 15, and the slider 23 is slidably arranged in the push rod 15.

[0031] The working principle is as follows. This device is arranged at the bottom of the seat cushion of the wheelchair, near the legs, and the pop-up protection mechanism is located on one side of the armrest of the manual wheelchair, and the baffle 17 is located above the roller. By setting the pushing mechanism, this device uses the meshing of the gear 13 and the rack 14 to push the connecting rod 20, so that the connecting rod 20 pushes the push rod 15, and the push rod 15 is pushed to drive the sliding column 22 to move, thereby pushing the baffle 17 to a vertical angle with the roller of the manual wheelchair, and then tightening the slider 23 to drive the fixed rod 16, and further pulling the baffle 17 apart by the fixed rod 16 to achieve the unfolded occlusion. At this time, the pushing mechanism cooperates with the pop-up protection mechanism to shield and protect both sides of the user, thereby blocking the external impact on the user, and further achieving the effect of protecting the knees, so as to avoid danger.

[0032] As Figure 1 and Figure 2As shown in the figure, three cylinders are evenly distributed at the bottom of the support plate 10. The support plate 10 is fixedly connected to the bottom plate 11 through the cylinders at both ends. Two positioning groove plates 12 are fixed on the bottom surface of the bottom plate 11. The positioning groove plates 12 are symmetrically arranged at both ends of the bottom plate 11. Two arc-shaped grooves are symmetrically opened at the top of the support plate 10. Two restraint belts 24 are installed on the top surface of the support plate 10. The two restraint belts 24 are respectively fixed above the two arc-shaped grooves.

[0033] The working principle is as follows. By setting the support plate 10, the arc-shaped grooves on the support plate 10 are used to adapt to the user's legs, and then the restraint belts 24 are used to restrain the user's legs, which increases the protection of the user, avoids the inertial force of braking from making the user lose balance, and avoids falling and thus getting injured.

[0034] As Figure 1 and Figure 3 shown in the figure, the cylinder at the center of the bottom surface of the support plate 10 is rotatably connected to the gear 13 through a bearing. There are two symmetrically arranged racks 14. The two racks 14 are respectively arranged on both sides of the top surface of the bottom plate 11. The two racks 14 are symmetrically arranged at an oblique angle with the gear 13 as the symmetry point. The two racks 14 are meshed with the same gear 13 for transmission; As Figure 2 、 Figure 3 and Figure 4 shown in the figure, a through hole is opened inside the bottom plate 11. A circular plate is fixedly connected to the bottom of the through hole. An electric motor 19 is fixedly arranged above the circular plate. The electric motor 19 is fixedly arranged in the through hole. The output end of the electric motor 19 is connected to the bottom surface of the gear 13. Sliding grooves are respectively opened on both sides of the bottom plate 11. A sliding seat 18 is slidably connected in the sliding groove. The sliding seat 18 is fixedly connected to the bottom surface of the rack 14; As Figure 3 and Figure 4 shown in the figure, the sliding seat 18 is of a Y-shaped structure. A rotating column is fixedly connected inside the sliding seat 18. One end of the connecting rod 20 is rotatably connected to the sliding seat 18 through the rotating column. A square convex block is fixedly arranged on the side of the push rod 15 close to the connecting rod 20. A shaft column is fixedly connected to the bottom surface of the square convex block. The other end of the connecting rod 20 is rotatably connected to the push rod 15 through the shaft column; As Figure 1 、 Figure 3 and Figure 5 shown in the figure, an arc-shaped slideway is opened inside the positioning groove plate 12. Rotating holes are opened at both ends of the push rod 15. A sliding port is opened between the two rotating holes. The push rod 15 is rotatably connected to the cylinder at the bottom of the support plate 10 through the rotating holes. The sliding column 22 slides in the arc-shaped slideway, and the sliding block 23 slides in the sliding port; As Figure 3 and Figure 5As shown in the figure, a short column is fixedly connected above the slider 23. One end of two fixed rods 16 is rotatably connected to the short column through a bearing. A fixed column 21 is fixedly connected in the rotating hole at the other end of the push rod 15. The baffle 17 is composed of a short ring column and a rectangular plate. The fixed column 21 is rotatably connected to the short ring column of the baffle 17. There are two baffles 17, and the two baffles 17 are symmetrically arranged at the upper and lower ends of the fixed column 21 with the push rod 15 as the center. A hinge seat is fixedly arranged on the side of the baffle 17 close to the push rod 15, and the other end of the fixed rod 16 is rotatably connected to the hinge seat.

[0035] The specific implementation is as follows. Before use, since the shape of the positioning wiping plate 12 is close to a semi-circle, in the state of being clamped in the arc-shaped slideway, the push rod 15 is parallel to the roller of the manual wheelchair, and the two baffles 17 are in a closed state. When in use, the sliding seat 18 is located at one end of the rack 14 close to the positioning groove plate 12. The motor 19 is externally connected to a control switch, and the control switch is arranged beside the armrest of the manual wheelchair at a position that can be touched by the user. When the switch is started, the motor 19 drives the rotation of the gear 13, and the gear 13 meshes with each rack 14 of the transmission chain. The two racks 14 simultaneously push the sliding seats 18 connected to them, so that the sliding seats 18 slide in the chutes on both sides of the bottom plate 11. The connecting rod 20 in the sliding seat 18 will be pushed. Due to the length limitation, the connecting rod 20 will push the square convex block, and the square convex block will drive the push rod 15 to rotate around the cylinder between the support plate 10 and the bottom plate 11. At this time, due to the rotation of the push rod 15, the sliding column 22 will slide along the shape of the arc-shaped slideway in the arc-shaped slideway of the positioning groove plate 12. At this time, the slider 23 will slide in the sliding opening of the push rod 22 under the drive of the sliding column 22, and then pull the two connected fixed rods 16 towards the direction of the gear 13, thereby unfolding the originally closed baffle 17. At this time, the baffle 17 is parallel to the roller of the manual wheelchair, and the two unfolded baffles 17 can block the user's knees to achieve protection. At this time, the push rod 15 is perpendicular to the roller.

[0036] A manual wheelchair includes a manual wheelchair body. The bottom of the manual wheelchair body is provided with all the above-mentioned protection components. The bottom surface of the manual wheelchair body is fixedly connected to the support plate 10. By setting the above-mentioned protection components, the device has the characteristics of reducing impact and protecting the user from unstable center of gravity.

[0037] It can be understood that the present invention is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A protective component, characterized in that, including a support plate (10) fixedly arranged under the seat cushion, a pushing mechanism movably arranged on the bottom surface of the support plate (10), the pushing mechanism including a gear (13), a rack (14), a push rod (15) and a connecting rod (20), the gear (13) being rotatably arranged on the bottom surface of the support plate (10), the rack (14) and the push rod (15) both being slidably arranged at the bottom of the support plate (10), and a connecting rod (20) being rotatably arranged between the rack (14) and the push rod (15); a pop-up protection mechanism slidably arranged in the push rod (15), the pop-up protection mechanism including a fixed rod (16), a baffle (17), a sliding column (22) and a slider (23), the sliding column (22) being fixedly arranged at the bottom of the slider (23), a fixed rod (16) being rotatably arranged between the push rod (15) and the baffle (17), the baffle (17) being rotatably arranged on the push rod (15), and the slider (23) being slidably arranged in the push rod (15).

2. The protective component according to claim 1, characterized in that Three cylinders are evenly distributed at the bottom of the support plate (10), the support plate (10) is fixedly connected to a bottom plate (11) through the cylinders at both ends, two positioning groove plates (12) are fixedly arranged on the bottom surface of the bottom plate (11), the positioning groove plates (12) are symmetrically arranged at both ends of the bottom plate (11), two arc-shaped grooves are symmetrically formed at the top of the support plate (10), and two restraint belts (24) are arranged on the top surface of the support plate (10), and the two restraint belts (24) are respectively fixed above the two arc-shaped grooves.

3. The protection component according to claim 2, characterized in that, The cylinder at the center of the bottom surface of the support plate (10) is rotatably connected to the gear (13) through a bearing, two racks (14) are symmetrically arranged, the two racks (14) are respectively arranged on both sides of the top surface of the bottom plate (11), the two racks (14) are symmetrically arranged at an oblique angle with the gear (13) as the symmetry point, and the two racks (14) are meshed and driven with the same gear (13).

4. A protective component according to claim 3, characterized in that, A through hole is formed in the bottom plate (11), a circular plate is fixedly connected to the bottom of the through hole, a motor (19) is fixedly arranged above the circular plate, the motor (19) is fixedly arranged in the through hole, the output end of the motor (19) is connected to the bottom surface of the gear (13), sliding grooves are respectively formed on both sides of the bottom plate (11), and a sliding seat (18) is slidably connected in the sliding grooves, and the sliding seat (18) is fixedly connected to the bottom surface of the rack (14).

5. The protective component according to claim 4, characterized in that The sliding seat (18) is of a Y-shaped structure, a rotating column is fixedly connected inside the sliding seat (18), one end of the connecting rod (20) is rotatably connected to the sliding seat (18) through the rotating column, a square convex block is fixedly arranged on one side of the push rod (15) close to the connecting rod (20), a shaft column is fixedly connected to the bottom surface of the square convex block, and the other end of the connecting rod (20) is rotatably connected to the push rod (15) through the shaft column.

6. The protection component according to claim 2, characterized in that, An arc-shaped slideway is formed inside the positioning groove plate (12). Rotation holes are formed at both ends of the push rod (15), and a sliding opening is formed between the two rotation holes. The push rod (15) is rotationally connected to the cylinder at the bottom of the support plate (10) through the rotation holes. The sliding column (22) slides in the arc-shaped slideway, and the sliding block (23) slides in the sliding opening.

7. A protection component according to claim 6, characterized in that, A short column is fixedly connected above the sliding block (23). One end of two fixed rods (16) is rotationally connected to the short column through a bearing. A fixed column (21) is fixedly connected in the rotation hole at the other end of the push rod (15). The baffle (17) is composed of a short ring column and a rectangular plate. The fixed column (21) is rotationally connected to the short ring column of the baffle (17). There are two baffles (17), and the two baffles (17) are symmetrically arranged above and below the fixed column (21) with the push rod (15) as the center. A hinge seat is fixedly arranged on one side of the baffle (17) close to the push rod (15), and the other end of the fixed rod (16) is rotationally connected to the hinge seat.

8. A manual wheelchair, comprising a manual wheelchair body, characterized in that, The bottom of the manual wheelchair body is provided with a protection component according to any one of claims 1-7, and the support plate (10) is fixedly connected to the bottom surface of the manual wheelchair body.

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