Four-wheel rollator

Abstract

The utility model discloses a four-wheel rollator which comprises a main rod and an auxiliary rod, a fixed tripod is arranged on the outer wall of the main rod, folding rods are rotationally connected to the outer wall of the fixed tripod through a rotating shaft, one ends of the two folding rods are rotationally connected with a connecting frame through a rotating shaft, and a fixed block is arranged on the outer wall of the auxiliary rod. A sliding block is slidably connected to the outer wall of the driven rod, and a round rod is rotatably connected between the fixed block and the sliding block through a rotating shaft. The main rod and the side rods are contacted and contracted, so that the rollator can contract on two sides, the main rod drives the fixed tripod to move, one end of each folding rod rotates on the fixed tripod, and the other end of each folding rod rotates in the connecting frame, so that the two folding rods are folded and contacted, the round rod rotates on the fixed block, and the round rod drives the sliding block to slide on the slave rod; therefore, the rollator can be folded on the other two sides.

Description

Technical Field

[0001] The utility model relates to the technical field of rollators, in particular to a four-wheel rollator. Background Art

[0002] A rollator is a device mainly used to help the elderly or other people with limited mobility to perform rehabilitation training and assist walking indoors and outdoors.

[0003] For example, a walker with an easy-to-install backrest, with announcement number CN216318772U and announcement date 2022.04.19, includes a front frame, a rear frame, and a connecting structure. A connecting lock is provided on one side of the connecting structure. The connecting lock includes a card plug-in, a card slot, and a lock. The card plug-in is inserted into the card slot, and the lock runs through the inner and outer sides of the card slot. A screw handle is provided at one end of the lock, and an open mouth is provided in the middle of the lock. The lower end of the front frame is provided with a wheel with adjustable height, and the lower end of the rear frame is provided with a support leg with adjustable height. Seat cushions are provided on the inner sides of the front frame and the rear frame.

[0004] With the continuous advancement of technology, there are more and more types of rollators with more and more functions. However, most rollators have complicated structures and assembly methods. When folding, the rollators can only be folded in two directions, and cannot be folded in the other two directions. As a result, the rollator is still very large after folding, which makes it inconvenient to use and the user experience is not good enough. Therefore, it is urgent to design a four-wheeled rollator to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a four-wheeled rollator to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] The foldable bicycle of claim 1, wherein the outer wall of the main rod is provided with a fixed tripod, and the outer wall of the fixed tripod is rotatably connected to a folding rod by a rotating shaft, and one end of the two folding rods is rotatably connected to a connecting frame by a rotating shaft, a fixed block is provided on the outer wall of the slave rod, and a sliding block is slidably connected to the outer wall of the slave rod, a round rod is rotatably connected between the fixed block and the sliding block by a rotating shaft, the top end of the main rod is rotated to be connected to a connecting special-shaped block by a rotating shaft, and the slave rod is slidably connected to the inside of the connecting special-shaped block, the outer wall of the main rod is provided with a connecting block, and the connecting block is rotatably connected to a side plate by a rotating shaft, the sliding block and the outer wall of the side plate are provided with connecting bolts, and a seat surface is provided on the outer wall of the top of the side plate.

[0008] Furthermore, the bottom end of the slave rod is rotatably connected to a universal frame via a bearing, and the inner wall of the universal frame is rotatably connected to a hollow wheel via a rotating shaft.

[0009] Furthermore, a handrail is provided at the top end of the slave rod, and a brake frame is provided on the outer wall of the handrail.

[0010] Furthermore, the inner wall of the brake frame is rotatably connected to a brake handle via a rotating shaft.

[0011] Furthermore, the bottom end of the main rod is rotatably connected to a driving wheel via a rotating shaft, and a return spring is provided on the outer wall of the main rod.

[0012] Furthermore, a brake pad is provided on the outer wall of the main rod, and a brake line is provided between the brake pad and the brake handle.

[0013] Furthermore, a backrest is clamped on the outer wall of the rear side of the connecting special-shaped block, and a fixing knob is provided on the outer wall of one side of the connecting special-shaped block, a fixing rod is provided inside the seat surface, a fixing hole is opened on the outer wall of the baffle, and the fixing rod passes through the inside of the fixing hole.

[0014] In the above technical solution, the utility model provides a four-wheeled walker,

[0015] By arranging the main rod, the slave rod, the fixed tripod, the folding rod, the connecting frame, the fixed block, the sliding block and the round rod, the main rod and the side rods contact and contract, so that the rollator can be folded on both sides, the main rod drives the fixed tripod to move, one end of the folding rod rotates on the fixed tripod, and the other end of the folding rod rotates in the connecting frame, so that the two folding rods fold and contact, the round rod rotates on the fixed block, and the round rod drives the sliding block to slide on the slave rod, so that the rollator can be folded on the other two sides, realizing the function of the four-wheeled rollator being able to be folded on all four sides and the function of reducing the volume when folded, thereby improving the convenience and experience of use.

[0016] By means of the universal frame, hollow wheel, driving wheel, return spring, brake cable, brake handle and brake pad, the universal frame drives the hollow wheel to move, and the walking direction can be changed when the universal frame drives the hollow wheel to move. By turning the brake handle, the brake handle pulls the brake cable, and the brake cable drives the brake pad to move. The return spring provides elastic force to return the brake pad to its position, thereby limiting the driving wheel and avoiding the problem that the rollator cannot self-lock and causes the user to slide when the user sits on the rollator.

[0017] By setting the connecting special-shaped block, the fixing knob, the main rod and the slave rod, the fixing knob is turned, the fixing knob rotates on the connecting special-shaped block, and the fixing knob is clamped on the outer wall of the slave rod, thereby realizing the function of limiting the opposite side rod, avoiding the problem that the main rod and the slave rod cannot be relatively fixed when the user sits on the rollator, and the slave rod slides on the connecting special-shaped block, causing the user to fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The present invention provides a schematic diagram of the three-dimensional structure of a four-wheeled rollator embodiment.

[0020] Figure 2 The figure is a rear view structural diagram of a four-wheeled rollator according to the present invention.

[0021] Figure 3 The figure is a side view schematic diagram of a four-wheeled rollator according to the present invention.

[0022] Figure 4 This is a front structural schematic diagram of a four-wheeled rollator embodiment of the present utility model.

[0023] Description of reference numerals:

[0024] 1. Main rod; 2. Slave rod; 3. Fixed tripod; 4. Folding rod; 5. Connecting frame; 6. Connecting block; 7. Side panel; 8. Seat; 9. Sliding block; 10. Connecting bolt; 11. Fixed block; 12. Round rod; 13. Connecting special-shaped block; 14. Fixed knob; 15. Backrest; 16. Baffle; 17. Fixed rod; 18. Fixed hole; 19. Handrail; 20. Brake frame; 21. Brake handle; 22. Universal joint; 23. Hollow wheel; 24. Driving wheel; 25. Return spring; 26. Brake cable; 27. Brake pad. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-4As shown, a four-wheeled walker provided by an embodiment of the present invention includes a main rod 1 and a slave rod 2. The outer wall of the main rod 1 is provided with a fixed tripod 3, and the outer wall of the fixed tripod 3 is rotatably connected to a folding rod 4 through a rotating shaft. One end of the two folding rods 4 is rotatably connected to a connecting frame 5 through a rotating shaft. A fixed block 11 is provided on the outer wall of the slave rod 2, and a sliding block 9 is slidably connected to the outer wall of the slave rod 2. A round rod 12 is rotatably connected between the fixed block 11 and the sliding block 9 through a rotating shaft. The top end of the main rod 1 is rotated to connect to a connecting special-shaped block 13 through a rotating shaft, and the slave rod 2 is slidably connected to the inside of the connecting special-shaped block 13. The outer wall of the main rod 1 is provided with a connecting block 6, and the connecting block 6 is rotatably connected to a side plate 7 through a rotating shaft. Connecting bolts 10 are provided on the outer walls of the sliding block 9 and the side plate 7, and a seat surface 8 is provided on the outer wall of the top of the side plate 7.

[0027] The utility model provides a four-wheeled walker, including a main rod 1 and a slave rod 2. The outer wall of the main rod 1 is provided with a fixed tripod 3, and the outer wall of the fixed tripod 3 is rotatably connected to a folding rod 4 through a rotating shaft. One end of the two folding rods 4 is rotatably connected to a connecting frame 5 through a rotating shaft. A fixed block 11 is provided on the outer wall of the slave rod 2, and a sliding block 9 is slidably connected to the outer wall of the slave rod 2. A round rod 12 is rotatably connected between the fixed block 11 and the sliding block 9 through a rotating shaft. The top end of the main rod 1 is rotated to connect to a connecting special-shaped block 13 through a rotating shaft, and the slave rod 2 is slidably connected to the inside of the connecting special-shaped block 13. The outer wall of the main rod 1 is provided with a connecting block 6, and the connecting block 6 is rotated through the rotating shaft. The main rod 1 and the slave rod 2 are folded together, and the rollator can be folded on both sides. The folding rod 4 rotates on the fixed tripod 3, and the other end of the folding rod 4 rotates on the connecting frame 5, so that the two folding rods 4 can be folded and contacted. The round rod 12 rotates on the fixed block 11, and the round rod 12 drives the sliding block 9 to move on the slave rod 2. The side panel 7 rotates on the connecting bolt 10, realizing the function of the rollator being able to fold on all four sides.

[0028] By setting: the main rod 1 and the side rods are in contact and contracted, so that the rollator can be retracted in two directions, the main rod 1 drives the fixed tripod 3 to move, one end of the folding rod 4 rotates on the fixed tripod 3, and the other end of the folding rod 4 rotates in the connecting frame 5, so that the two folding rods 4 are folded and in contact, the round rod 12 rotates on the fixed block 11, and the round rod 12 drives the sliding block 9 to slide on the secondary rod 2, so that the rollator can be folded in the other two directions, realizing the function of the four-wheeled rollator being able to be folded in four directions, improving convenience and experience.

[0029] In one embodiment of the present invention, Figure 1 and Figure 3As shown, the bottom end of the slave rod 2 is rotatably connected to a universal mount 22 via a bearing, and the inner wall of the universal mount 22 is rotatably connected to a hollow wheel 23 via a rotating shaft. The universal mount 22 rotates on the slave rod 2, and the universal mount 22 drives the hollow wheel 23 to rotate and move, thereby realizing the function of driving the rollator to turn and move to a specified position.

[0030] In another embodiment of the present invention, Figure 1 and Figure 3 As shown, a handrail 19 is provided at the top of the rod 2, and a brake frame 20 is provided on the outer wall of the handrail 19. The brake frame 20 is provided on the handrail 19, and the user drives the rollator to move through the handrail 19.

[0031] In another embodiment provided by the present utility model, Figure 1 and Figure 3 As shown, the inner wall of the brake frame 20 is rotatably connected to the brake handle 21 via a rotating shaft. The brake handle 21 rotates on the brake frame 20 to achieve a function of limiting the installation of the brake handle 21.

[0032] In one embodiment provided by the present utility model, Figure 3 As shown, the bottom end of the main rod 1 is connected to the driving wheel 24 through a rotating shaft, and a return spring 25 is provided on the outer wall of the main rod 1. The return spring 25 provides elastic force so that the brake pad 27 can contact the driving wheel 24 to avoid the problem of the driving wheel 24 sliding.

[0033] In another embodiment provided by the present utility model, Figure 1 and Figure 3 As shown, a brake pad 27 is provided on the outer wall of the main rod 1, and a brake wire 26 is provided between the brake pad 27 and the brake handle 21. The brake handle 21 drives the brake wire 26 to contract, and the brake wire 26 pulls the brake pad 27, so that when moving, the brake pad 27 releases the contact limit on the driving wheel 24, realizing the function of the rollator being able to move.

[0034] In another embodiment provided by the present utility model, Figure 2 As shown, a backrest 15 is clamped on the outer wall of the rear side of the connecting special-shaped block 13, and a fixing knob 14 is provided on the outer wall of one side of the connecting special-shaped block 13. A fixing rod 17 is provided inside the seat surface 8. A fixing hole 18 is opened on the outer wall of the baffle 16, and the fixing rod 17 passes through the inside of the fixing hole 18. The baffle 16 drives the fixing hole 18 to be installed on the fixing rod 17, so as to provide a protective function for the rollator.

[0035] Working principle: When in use, the main rod 1 rotates on the connecting special-shaped block 13, and the slave rod 2 slides on the connecting special-shaped block 13, so that the main rod 1 and the slave rod 2 can be folded on both sides. One end of the folding rod 4 rotates on the fixed tripod 3, and the other end of the folding rod 4 rotates in the connecting frame 5, so that the two folding rods 4 can fold and contact. The cylinder rotates on the fixed block 11, and the cylinder drives the sliding block 9 to slide on the slave rod 2, so that the rollator can be folded on the other two sides, realizing the function of the rollator being able to fold on all four sides. The side panels 7 are connected to the connecting blocks. 6 is rotated, and the sliding block 9 is connected to the side panel 7 through the connecting bolt 10. The side panel 7 rotates on the connecting bolt 10, so that when folding, the side panel 7 can drive the seat surface 8 to rotate and fold. The brake handle 21 is rotated, and the brake handle 21 drives the brake wire 26 to stretch. The brake wire 26 drives the brake pad 27 to move. The brake pad 27 contacts the driving wheel 24 to release the limit on the driving wheel 24 when the rollator is moving. The baffle 16 drives the fixing hole 18 to be installed on the fixing rod 17, realizing the function of protecting the rollator.

[0036] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A four-wheeled walker comprising a main rod (1) and a secondary rod (2), characterized in that: The outer wall of the main rod (1) is provided with a fixed tripod (3), and the outer wall of the fixed tripod (3) is rotatably connected to a folding rod (4) via a rotating shaft. One end of the two folding rods (4) is rotatably connected to a connecting frame (5) via a rotating shaft. A fixed block (11) is provided on the outer wall of the slave rod (2), and a sliding block (9) is slidably connected to the outer wall of the slave rod (2). A round rod (12) is rotatably connected between the fixed block (11) and the sliding block (9) via a rotating shaft. The top of the main rod (1) is rotated to connect to a connecting special-shaped block (13), and the slave rod (2) is slidably connected to the inside of the connecting special-shaped block (13). The outer wall of the main rod (1) is provided with a connecting block (6), and the connecting block (6) is rotatably connected to a side plate (7) via a rotating shaft. Connecting bolts (10) are provided between the sliding block (9) and the outer wall of the side plate (7), and a seat surface (8) is provided on the outer wall of the top of the side plate (7).

2. A four-wheeled rollator according to claim 1, characterized in that: The bottom end of the slave rod (2) is rotatably connected to a universal frame (22) via a bearing, and the inner wall of the universal frame (22) is rotatably connected to a hollow wheel (23) via a rotating shaft.

3. A four-wheeled rollator according to claim 2, characterized in that: A handrail (19) is provided at the top end of the slave rod (2), and a brake frame (20) is provided on the outer wall of the handrail (19).

4. The four-wheeled rollator according to claim 3, characterized in that: The inner wall of the brake frame (20) is rotatably connected to a brake handle (21) via a rotating shaft.

5. The four-wheeled rollator according to claim 4, characterized in that: The bottom end of the main rod (1) is rotatably connected to a driving wheel (24) via a rotating shaft, and a return spring (25) is provided on the outer wall of the main rod (1).

6. The four-wheeled rollator according to claim 5, characterized in that: A brake pad (27) is provided on the outer wall of the main rod (1), and a brake line (26) is provided between the brake pad (27) and the brake handle (21).

7. The four-wheeled rollator according to claim 6, characterized in that: A backrest (15) is clamped on the outer wall of the rear side of the connecting special-shaped block (13), and a fixing knob (14) is provided on the outer wall of one side of the connecting special-shaped block (13). A fixing rod (17) is provided inside the seat surface (8). A fixing hole (18) is opened on the outer wall of the baffle (16), and the fixing rod (17) passes through the inside of the fixing hole (18).

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