A medical wheelchair with an anti-rollover function

Abstract

The present invention relates to a medical wheelchair with an anti-rollover function, which comprises a trigger device assembly, a support device assembly, and a fixing device assembly. The trigger device assembly includes a bottom support plate and a T-shaped frame. The support device assembly includes a floor support rod, an L-shaped rod, and a support rod. The fixing device assembly includes a clamping plate. When the wheelchair tilts, the bottom support block on the bottom support plate contacts the ground, pushing the T-shaped frame to disengage from the support device assembly, releasing the pressure of the torsion spring, causing the support rod to fall, and driving the floor support rod to land, so as to prevent the wheelchair from continuing to tilt. The present invention has the advantages of convenient installation, high safety, and easy promotion.

Description

Technical Field

[0001] The present invention relates to an anti-roll device, and particularly to a medical wheelchair with an anti-overturning function. Background Art

[0002] As a means of transportation for the physically disabled and the mobility-impaired, and also as an auxiliary tool for family members to move and take care of patients, when the wheelchair loses its balance during personal use or movement due to slight impact or improper operation, the wheelchair is prone to overturn, causing harm to the user. Summary of the Invention

[0003] The purpose of the present invention is to solve the existing problems and provide a medical wheelchair with an anti-overturning function. By installing an anti-roll device, the wheelchair can be effectively prevented from rolling over, avoiding harm caused to the user due to overturning.

[0004] To solve the above technical problems, the technical solution of the present invention is achieved in the following way: A medical wheelchair with an anti-overturning function includes a trigger device assembly, a support device assembly, and a fixing device assembly;

[0005] The trigger device assembly includes a bottom support plate and a T-shaped frame. A bottom support block perpendicular to the bottom support plate is provided at the lower end of the bottom support plate. The outer side of the bottom support plate is pin-connected to the lower end of the T-shaped frame. An anti-rotation block perpendicular to and upward is provided on the side of the bottom support plate close to the wheelchair to prevent the bottom support plate from rotating towards the ground due to gravity.

[0006] The support device assembly includes a floor support rod, a pair of symmetric L-shaped rods, a pair of symmetric support rods, and a pair of symmetric rotating tubes. The L-shaped rods open inward. The upper ends of the L-shaped rods are connected to the floor support rod, and the lower ends of the L-shaped rods are connected to the support rods. The lower ends of the support rods are connected to the outer sides of the rotating tubes and are perpendicular to each other. Ratchets are provided inside both of the two rotating tubes;

[0007] The fixing device assembly includes a fixing plate and a clamping plate. A round hole is provided at the upper end of the fixing plate. The fixing plate is fixed to the side of the wheelchair by sleeving the round hole on the central axis of the wheel rim and fastening with a nut. A U-shaped limit ring is provided at the upper middle part of the fixing plate. The T-shaped frame passes through the U-shaped limit ring and forms a limit connection therewith, and the T-shaped frame can freely slide up and down within the U-shaped limit ring. Triangular brackets protruding outward are respectively provided at the two side edges of the lower middle part of the fixing plate. The triangular brackets are pin-connected to the clamping plate. A second spring is compressed between the clamping plate and the fixing plate. The clamping plate is in an inverted T shape and two stoppers cooperating with the ratchets are respectively provided at the two lower ends;

[0008] On both sides of the lower end of the fixed plate, shafts are respectively provided. The rotating tube on the support device assembly is sleeved on the shafts, and the support device assembly is rotatably connected to the fixed plate. At the outer top of the shaft, a rotation-stop post is provided downward. A torsion spring is sleeved on the outer circumference of the shaft. Both ends of the torsion spring respectively act on the support rod and the rotation-stop post, and the torsion spring is preset with a pre-tightening torsion force that forces the support device assembly to rotate outward from the wheelchair.

[0009] In this way, when the wheelchair tilts, the bottom support block contacts the ground, generating a pressure that pushes the T-shaped frame upward to disengage from the L-shaped rod. The pressure of the torsion spring in the originally compressed state is released, pushing the support rod away, driving the landing support rod to land, and preventing the wheelchair from continuing to tilt, effectively preventing the wheelchair from tipping over and causing harm to the user.

[0010] A further limited technical solution of the present invention is that the main structures of the trigger device assembly, the support device assembly, and the fixing device assembly are all made by welding stainless steel materials, which are wear-resistant, corrosion-resistant, and rust-proof. Description of the Drawings

[0011] Figure 1 And Figure 2 is a schematic structural diagram of the present invention.

[0012] Figure 3 is a schematic rear structural diagram of the present invention.

[0013] Figure 4 is a schematic structural diagram of the present invention when unfolded.

[0014] Figure 5 is a schematic structural diagram of the support device assembly.

[0015] Figure 6 is a schematic structural diagram of the fixing device assembly.

[0016] Figure 7 is a schematic structural diagram of the clamping plate.

[0017] Figure 8 is a schematic structural diagram of the bottom support plate.

[0018] Wherein: 1. Trigger device assembly; 2. Support device assembly; 3. Fixing device assembly; 101. Bottom support block; 102. Bottom support plate; 103. T-shaped frame; 104. Anti-rotation block; 201. Landing support rod; 202. L-shaped rod; 203. Support rod; 204. Rotating tube; 205. Ratchet; 206. Torsion spring; 301. Fixed plate; 302. U-shaped limit ring; 303. Shaft; 304. Clamping plate; 305. Second spring; 30101. Round hole; 30102. Nut; 30103. Triangular bracket; 30301. Rotation-stop post; 30401. Stop pawl. Detailed Embodiment

[0019] The following further details the present invention:

[0020] Embodiment 1

[0021] A medical wheelchair with an anti - rollover function provided in this embodiment is characterized in that it includes a trigger device assembly 1, a support device assembly 2, and a fixing device assembly 3.

[0022] The trigger device assembly 1 includes a bottom support plate 102 and a T - shaped frame 103. A bottom support block 101 perpendicular to the bottom support plate 102 is provided at the lower end of the bottom support plate 102. The outer side of the bottom support plate 102 is pin - connected to the lower end of the T - shaped frame 103. An anti - rotation block 104 perpendicular to and upward is provided on the side of the bottom support plate 102 close to the wheelchair to prevent the bottom support plate 102 from rotating towards the ground due to gravity.

[0023] The support device assembly 2 includes a floor support rod 201, a pair of symmetric L - shaped rods 202, a pair of symmetric support rods 203, and a pair of symmetric rotating tubes 204. The L - shaped rods 202 open inward. The upper end of the L - shaped rod 202 is connected to the floor support rod 201, and the lower end of the L - shaped rod 202 is connected to the support rod 203. The lower end of the support rod 203 is connected to the outer side of the rotating tube 204 and is perpendicular to it. Ratchets 205 are provided inside both of the two rotating tubes 204.

[0024] The fixing device assembly 3 includes a fixing plate 301 and a clamping plate 304. A circular hole 30101 is provided at the upper end of the fixing plate 301. The fixing plate 301 is fixed on the side of the wheelchair by sleeving the circular hole 30101 on the axle of the wheel rim and fastening it with a nut 30102. A U - shaped limiting ring 302 is provided at the upper middle part of the fixing plate 301. The T - shaped frame 103 passes through the U - shaped limiting ring 302 and forms a limiting connection with it, and the T - shaped frame 103 can freely slide up and down inside the U - shaped limiting ring 302. Triangular brackets 30103 protruding outward are respectively provided at the two side edges of the lower middle part of the fixing plate 301. The triangular brackets 30103 are pin - connected to the clamping plate 304. The clamping plate 304 is in an inverted T - shape, and anti - rotation claws 30401 cooperating with the ratchets 205 are respectively provided at both lower ends. A second spring 305 is compressed between the clamping plate 304 and the fixing plate 301.

[0025] Shafts 303 are respectively provided at the two side edges of the lower end of the fixing plate 301. The rotating tubes 204 on the support device assembly 2 are sleeved on the shafts 303, and the support device assembly 2 forms a rotating connection with the fixing plate 301. A rotation - stopping column 30301 is provided downward at the top of the outer side of the shaft 303. A torsion spring 206 is sleeved on the outer circumference of the shaft 303. Both ends of the torsion spring 206 act on the support rod 203 and the rotation - stopping column 30301 respectively, and the torsion spring 206 is preset with a pre - tightening torque forcing the support device assembly 2 to rotate towards the outer side of the wheelchair.

[0026] In this way, when the wheelchair tilts, the bottom support block 101 contacts the ground, generating pressure to push the T-shaped frame 103 to move upward and separate from the support device assembly 2. The pressure of the torsion spring 206 in the original compressed state is released, pushing the support rod 203 away, driving the floor support rod 201 to land, preventing the wheelchair from tilting further, and effectively preventing the wheelchair from tipping over and causing harm to the user.

[0027] The main structures of the trigger device assembly 1, the support device assembly 2, and the fixing device assembly 3 are all made by welding stainless steel materials, which are wear-resistant, corrosion-resistant, and rust-proof.

[0028] The operation process of this embodiment is as follows: when the wheelchair tilts, the bottom support block lands and pushes the T-shaped frame upward to separate from the L-shaped rod. The pressure of the torsion spring is released to push the support rod away, driving the floor support rod to land for support and preventing the wheelchair from tilting further. When retracting the anti-tipping device, press the upper end of the clamping plate and retract the floor support rod upward to its original position.

[0029] In this way, this embodiment has the advantages of being easy to install, high safety, and convenient for popularization, effectively preventing the wheelchair from easily tipping over due to loss of balance and avoiding harm to the user.

[0030] The above embodiments are only used to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the present invention.

Claims

1. A medical wheelchair with an anti-rollover function, characterized in that: it includes a trigger device assembly (1), a support device assembly (2), and a fixing device assembly (3); The trigger device assembly (1) includes a bottom support plate (102) and a T-shaped frame (103). A bottom support block (101) perpendicular to the bottom support plate (102) is provided at the lower end of the bottom support plate (102). The outer side of the bottom support plate (102) is pin-connected to the lower end of the T-shaped frame (103). An anti-rotation block (104) perpendicular to and upward is provided on the side of the bottom support plate (102) close to the wheelchair to prevent the bottom support plate (102) from rotating towards the ground due to gravity; The support device assembly (2) includes a floor support rod (201), a pair of symmetric L-shaped rods (202), a pair of symmetric support rods (203), and a pair of symmetric rotating tubes (204); the L-shaped rods (202) open inward. The upper end of the L-shaped rod (202) is connected to the floor support rod (201), and the lower end of the L-shaped rod (202) is connected to the support rod (203); the lower end of the support rod (203) is connected to the outer side of the rotating tube (204) and is perpendicular to each other. Ratchets (205) are provided inside both of the two rotating tubes (204); The fixing device assembly (3) includes a fixing plate (301) and a clamping plate (304); a circular hole (30101) is provided at the upper end of the fixing plate (301). The fixing plate (301) is fixed on the side of the wheelchair by sleeving the circular hole (30101) on the axle of the wheel rim and fastening it with a nut (30102); a U-shaped limiting ring (302) is provided at the upper middle part of the fixing plate (301). The T-shaped frame (103) passes through the U-shaped limiting ring (302) and forms a limiting connection therewith, and the T-shaped frame (103) can freely slide up and down inside the U-shaped limiting ring (302); triangular brackets (30103) protruding outward are respectively provided at the two side edges of the lower middle part of the fixing plate (301). The triangular brackets (30103) are pin-connected to the clamping plate (304). The clamping plate (304) is in an inverted T shape and two stoppers (30401) matching with the ratchets (205) are respectively provided at both sides of the lower end. A second spring (305) is compressed between the clamping plate (304) and the fixing plate (301); On both sides of the lower end of the fixed plate (301), shafts (303) are respectively provided. The rotating tube (204) on the support device assembly (2) is sleeved on the shaft (303), and the support device assembly (2) is rotationally connected to the fixed plate (301); at the outer top end of the shaft (303), a rotation stopping column (30301) is provided downward. A torsion spring (206) is sleeved on the outer circumference of the shaft (303). Both ends of the torsion spring (206) respectively act on the support rod (203) and the rotation stopping column (30301), and the torsion spring (206) is preset with a pre-tightening torsion force that forces the support device assembly (2) to rotate outward of the wheelchair. The second spring (305) is sleeved on the positioning convex shaft protruding from the plate surface of the clamping plate (304). One end of the second spring (305) is fixed on the plate surface of the clamping plate (304), and the other end is fixed on the plate surface of the fixed plate (301); in the normal state of the second spring (305), the clamping plate (304) is pushed away from the fixed plate (301), and the locking claw (30401) of the clamping plate (304) engages with the ratchet wheel (205). When the second spring (305) is compressed, the locking claw (30401) of the clamping plate (304) disengages from the ratchet wheel (205), and the floor support rod (201) is pulled upward to return to its original position.

2. The medical wheelchair with an anti-rollover function according to claim 1, characterized in that: The main structures of the trigger device assembly (1), the support device assembly (2), and the fixing device assembly (3) are all made by welding stainless steel materials.

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