Bracket structure of rollator

Abstract

A rollator support structure comprises a front frame and a rear frame, and the upper end of the front frame is hinged to the middle of the rear frame. A limiting assembly is further arranged at the hinged position of the front frame and the rear frame and comprises a front frame limiting plate, a rear frame limiting plate and a limiting rod, the front frame limiting plate is fixedly connected with the front frame, the rear frame limiting plate is fixedly connected with the rear frame, a rotating sliding groove is formed in the lower portion of the rear frame limiting plate, and the limiting rod is arranged in the rotating sliding groove. A limiting groove is downwards formed in the lowermost end of the rotating sliding groove; a limiting rod mounting groove corresponding to the limiting groove is formed in the front frame limiting plate; a rotating shaft and a connecting shaft are arranged at the upper end of the front frame, the rotating shaft penetrates through the front frame and the front frame limiting plate to be rotationally connected with the rear frame limiting plate, one end of the connecting shaft is fixed to the front frame, and the other end of the connecting shaft is arranged in the rotating sliding groove. And the end of the limiting rod penetrates through the limiting rod mounting groove and is arranged in the limiting groove.

Description

Technical Field

[0001] The utility model relates to the field of rollators, in particular to a rollator bracket structure. Background Art

[0002] Rollators are commonly used by people who have difficulty walking. As a walking aid, a rollator makes walking easier and enables people who have, for example, a disability or other condition that would impede walking to more conveniently use their feet to travel. The device helps reduce the burden borne by the user's lower extremities, thus improving the user's mobility.

[0003] Generally, a rollator is designed to be relatively large and heavy in order to provide sufficient stability and / or load-bearing capacity, but this makes it inconvenient to store the rollator, so a rollator that can be folded and stored is needed to appear on the market.

[0004] This type of rollator that is easy to store is lighter and can be folded to reduce the space it occupies. However, its stability is relatively poor. When the rollator is opened for use, the frame may easily bend at the joints of the foldable and storage parts due to the hinged structure when it hits a pothole or is blocked by debris, resulting in injuries to the user. Therefore, a rollator that is lightweight, foldable, and stable when unfolded is an urgently needed product on the market. Utility Model Content

[0005] In order to solve the above problems, the utility model provides the following solutions:

[0006] A support structure for a walking vehicle comprises a front frame and a rear frame, the upper end of the front frame is hinged with the middle part of the rear frame; a limit assembly is also arranged at the hinge of the front frame and the rear frame, the limit assembly comprises a front frame limit plate, a rear frame limit plate and a limit rod, the front frame limit plate is fixedly connected to the front frame, the rear frame limit plate is fixedly connected to the rear frame, a rotating slide groove is arranged at the lower part of the rear frame limit plate, a limit groove is arranged downward at the lower end of the rotating slide groove, and a limit rod mounting groove is arranged on the front frame limit plate corresponding to the limit groove; a rotating shaft and a connecting shaft are arranged at the upper end of the front frame, the rotating shaft passes through the front frame, the front frame limit plate and the rear frame limit plate are rotatably connected, one end of the connecting shaft is fixed to the front frame, and the other end is arranged in the rotating slide groove; an end of the limit rod passes through the limit rod mounting groove and is arranged in the limit groove.

[0007] Furthermore, a fixing column is provided on the side of the front frame limit plate facing the front frame, and a retaining spring is provided on the outer sleeve of the fixing column. A clamping foot at one end of the retaining spring is fixedly connected to the front frame, and a clamping foot at the other end of the retaining spring is fixedly connected to the limiting rod.

[0008] Furthermore, a walking handrail is provided at the top end of the rear frame which is bent backwards; and movable wheels are provided at the lower ends of the front frame and the rear frame.

[0009] Furthermore, the moving wheel is connected to the lower end of the rear frame through a universal bracket.

[0010] Furthermore, a brake handle is provided below the walking handrail, a brake pad is provided outside the moving wheel at the lower end of the rear frame, and the brake pad is connected to the brake handle through a rolling wire.

[0011] Furthermore, the limit assembly also includes a limit shell, which includes a first outer shell, a second outer shell and an inner shell, the first outer shell is sleeved on the inner side of the front frame, the second outer shell is sleeved on the outer side of the rear frame, the inner shell is arranged between the front frame limit plate and the rear frame limit plate, the first outer shell is fixedly connected to the front frame by screws; the second outer shell is fixedly connected to the rear frame by screws, and the second outer shell is provided with a frame fixing groove corresponding to the rear frame; the inner shell is rotatably connected to the rear frame limit plate, the first outer shell is buckled and connected to the inner side of the inner shell, and the outer side of the inner shell is buckled and rotatably connected to the second outer shell.

[0012] Furthermore, the rotating shaft passes through the front frame, the inner shell and the rear frame limiting plate in sequence to be rotatably connected.

[0013] Furthermore, the first outer shell is provided with an outer shell limiting groove corresponding to the limiting groove, and the end of the limiting rod passes through the outer shell limiting groove and the limiting rod installation groove in sequence and is embedded in the limiting groove.

[0014] The beneficial effects of the utility model are:

[0015] 1. A limit device is provided on the frame, which can fix the angle of the frame after the frame is opened, making the frame more stable when in use.

[0016] 2. Lift the limit lever to remove the frame from the limit state, making it easier to fold the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection of the rear frame limit plate;

[0019] Figure 3 It is a schematic diagram of the front frame structure;

[0020] Figure 4 is a schematic diagram of the rear frame structure;

[0021] Figure 5 This is an exploded view of the limit assembly;

[0022] Figure 6 Schematic diagram of the limit housing buckle

[0023] In the figure: 1. front frame; 2. rear frame; 3. walking handrail; 4. brake handle; 5. rolling wire; 6. moving wheel; 7. universal bracket; 8. limit rod; 9. limit plate of rear frame; 10. rotating slide; 11. limit groove; 12. rotating shaft; 13. connecting shaft; 14. fixing column; 15. retaining spring; 16. inner shell; 17. first outer shell; 18. limit rod mounting groove; 19. outer shell limit groove; 20. front frame limit plate; 21. second outer shell DETAILED DESCRIPTION

[0024] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0025] Example 1: Figure 1-Figure 6 As shown,

[0026] A walker support structure includes a front frame 1 and a rear frame 2, wherein the upper end of the front frame 1 is hinged to the middle of the rear frame 2; a limit assembly is also provided at the hinge between the front frame 1 and the rear frame 2, wherein the limit assembly includes a front frame limit plate 20, a rear frame limit plate 9 and a limit rod 8, wherein the front frame limit plate 20 is fixedly connected to the front frame 1, the rear frame limit plate 9 is fixedly connected to the rear frame 2, and a rotating slide groove 10 is provided at the lower part of the rear frame limit plate 9, and the rotation A limit slot 11 is downwardly provided at the lower end of the slide slot 10, and a limit rod mounting slot 18 is provided at the front frame limit plate 20 corresponding to the limit slot 11; a rotating shaft 12 and a connecting shaft 13 are provided at the upper end of the front frame 1, the rotating shaft 12 passes through the front frame 1, the front frame limit plate 20 and is rotatably connected to the rear frame limit plate 9, one end of the connecting shaft 13 is fixed to the front frame 1, and the other end is provided in the rotating slide slot 10; the end of the limit rod 8 passes through the limit rod mounting slot 18 and is provided in the limit slot 11.

[0027] The front frame limit plate 20 is further provided with a fixing column 14 on the side facing the front frame 1 , and a retaining spring 15 is provided on the outer sleeve of the fixing column 14 , one end of the retaining spring 15 is fixedly connected to the front frame 1 , and the other end of the retaining spring 15 is fixedly connected to the limiting rod 8 .

[0028] The top of the rear frame 2 is bent backwards to be provided with a walking handrail 3; the lower ends of the front frame 1 and the rear frame 2 are both provided with moving wheels 6. The moving wheels 6 are connected to the lower end of the rear frame 2 through a universal bracket 7. A brake handle 4 is provided below the walking handrail 3, and a brake pad is provided outside the moving wheel 6 at the lower end of the rear frame 2, and the brake pad is connected to the brake handle 4 through a rolling wire 5.

[0029] The limiting assembly also includes a limiting shell, which includes a first outer shell 17, a second outer shell 21 and an inner shell 16. The first outer shell 17 is sleeved on the inner side of the front frame 1, the second outer shell 21 is sleeved on the outer side of the rear frame 2, and the inner shell 16 is arranged between the front frame limiting plate 20 and the rear frame limiting plate 9. The first outer shell 17 is fixedly connected to the front frame 1 by screws; the second outer shell 21 is fixedly connected to the rear frame 2 by screws, and the second outer shell 21 is provided with a frame fixing groove corresponding to the rear frame 2; the inner shell 16 is rotatably connected to the rear frame limiting plate 9, the first outer shell 17 is buckled and connected to the inner side of the inner shell 16, and the outer side of the inner shell 16 is buckled and rotatably connected to the second outer shell 21. The rotating shaft 12 passes through the front frame 1, the inner shell 16 and the rear frame limiting plate 9 in sequence and is rotatably connected. The first outer shell 17 is provided with an outer shell limiting groove 19 corresponding to the limiting groove 11 , and the end of the limiting rod 8 passes through the outer shell limiting groove 19 and the limiting rod installation groove 18 in sequence and is embedded in the limiting groove 11 .

[0030] When the frame needs to be opened for use, the front frame 1 is rotated. At this time, the connecting shaft 13 and the limiting rod 8 slide with the front frame 1 in the rotating slide groove 10. At the same time, the first limiting shell 17, the inner shell 16 and the limiting rod 8 rotate together with the front frame 1. When the limiting rod 8 reaches the lowermost end of the rotating slide groove 10, the outer shell limiting groove 19, the limiting rod mounting groove 18 and the limiting groove 11 coincide with each other. Under the elastic action of the retaining spring 15, the limiting rod 8 bounces into the limiting groove 11 and abuts against the bottom of the limiting groove 11. At this time, the front frame 1 and the rear frame 2 are separated to the use state. Since the limiting rod 8 is embedded in the limiting groove 11, and the retaining spring 15 makes the limiting rod 8 always embedded in the limiting groove 11, the front frame 1 can be fixed in the use state, and the user does not need to use other external forces to limit the front frame 1, which is convenient for use. When the rollator is no longer needed, the limit rod 8 is lifted to disengage the limit slot 11 and enter the rotating slide slot 10. At this time, the front frame 1 can rotate until the front frame 1 is combined with the rear frame 2, thus completing the conversion of the rollator to the folded state.

[0031] The utility model is provided with a limiting device on the frame, which can fix the angle of the frame after the frame is opened, so that the frame is more stable when used. The frame is separated from the limiting state by lifting the limiting rod 8, so that the frame can be folded up conveniently.

[0032] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A support structure for a walking vehicle, characterized in that: It comprises a front frame and a rear frame, the upper end of the front frame is hinged with the middle part of the rear frame; a limiting assembly is also arranged at the hinge of the front frame and the rear frame, the limiting assembly comprises a front frame limiting plate, a rear frame limiting plate and a limiting rod, the front frame limiting plate is fixedly connected with the front frame, the rear frame limiting plate is fixedly connected with the rear frame, a rotating slide groove is arranged at the lower part of the rear frame limiting plate, a limiting groove is arranged downward at the lower end of the rotating slide groove, and a limiting rod mounting groove is arranged on the front frame limiting plate corresponding to the limiting groove; a rotating shaft and a connecting shaft are arranged at the upper end of the front frame, the rotating shaft passes through the front frame, the front frame limiting plate and the rear frame limiting plate for rotational connection, one end of the connecting shaft is fixed with the front frame, and the other end is arranged in the rotating slide groove; the end head of the limiting rod passes through the limiting rod mounting groove and is arranged in the limiting groove.

2. A rollator support structure as claimed in claim 1, characterized in that: The front frame limit plate is also provided with a fixing column on the side facing the front frame, and a retaining spring is arranged on the outer sleeve of the fixing column. A clamping foot at one end of the retaining spring is fixedly connected to the front frame, and a clamping foot at the other end of the retaining spring is fixedly connected to the limiting rod.

3. A rollator support structure as claimed in claim 1, characterized in that: The top end of the rear frame is bent backwards and provided with a walking handrail; the lower ends of the front frame and the rear frame are both provided with moving wheels.

4. A rollator support structure as claimed in claim 3, characterized in that: The moving wheel is connected to the lower end of the rear frame through a universal bracket.

5. A rollator support structure as claimed in claim 3, characterized in that: A brake handle is arranged below the walking handrail, a brake pad is arranged outside the moving wheel at the lower end of the rear frame, and the brake pad is connected to the brake handle through a rolling wire.

6. A rollator support structure as claimed in claim 1, characterized in that: The limit assembly also includes a limit shell, which includes a first outer shell, a second outer shell and an inner shell, the first outer shell is sleeved on the inner side of the front frame, the second outer shell is sleeved on the outer side of the rear frame, the inner shell is arranged between the front frame limit plate and the rear frame limit plate, the first outer shell is fixedly connected to the front frame by screws; the second outer shell is fixedly connected to the rear frame by screws, and the second outer shell is provided with a frame fixing groove corresponding to the rear frame; the inner shell is rotatably connected to the rear frame limit plate, the first outer shell is buckled and connected to the inner side of the inner shell, and the outer side of the inner shell is buckled and rotatably connected to the second outer shell.

7. A rollator support structure as claimed in claim 6, characterized in that: The rotating shaft passes through the front frame, the inner shell and the rear frame limiting plate in sequence and is rotatably connected.

8. A rollator support structure as claimed in claim 6, characterized in that: The first outer shell is provided with an outer shell limiting groove corresponding to the limiting groove, and the end of the limiting rod passes through the outer shell limiting groove and the limiting rod installation groove in sequence and is embedded in the limiting groove.

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