Rollator

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a rollator which comprises two symmetrically-arranged side frames and two first connecting rods rotationally connected in a crossed mode, each side frame comprises a front foot pipe, a sliding base, a rear foot pipe and a second connecting rod, the sliding bases are arranged on the front foot pipes in an up-down moving mode, and the rear foot pipes are obliquely arranged on the rear sides of the front foot pipes; the second connecting rods are arranged between the front foot pipes and the rear foot pipes, the two ends of each second connecting rod are rotationally connected with the front foot pipes and the rear foot pipes respectively, the upper ends of the two first connecting rods are rotationally connected with the corresponding sliding seats respectively, and the lower ends of the two first connecting rods are rotationally connected with the corresponding front foot pipes respectively. Two actions of folding or unfolding the rear leg pipe and the two side frames can be synchronously completed by moving the sliding seat up and down, flexible and rapid switching between a folding state and an unfolding state of the rollator can be performed according to user requirements, the rollator is simple to operate and suitable for different users to use, storage space can be reduced, and storage and carrying are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a walker. Background Art

[0002] Rollators are mostly used by people who need walking assistance. They mainly assist users in standing, walking, shopping, and provide a seat for them to rest. For easy storage, many foldable four-wheeled strollers are available on the market.

[0003] When folding existing walkers, users are required to fold the rear leg tubes on the side frames first, and then fold the side frames to complete the folding action. The operation is cumbersome. For those who already have difficulty in walking and need to use a stroller to walk, this operation method undoubtedly increases the difficulty of use. Summary of the Invention

[0004] The object of the present invention is to provide a rollator that can solve the above problems.

[0005] To achieve the above-mentioned object, an embodiment of the present invention provides a rollator, comprising two symmetrically arranged side frames and two first connecting rods connected in a cross-rotational manner, wherein the side frames include: Front leg tube; A sliding seat is movably arranged on the front leg tube; a rear leg tube, obliquely disposed on the rear side of the front leg tube, with its upper end close to the front leg tube and rotatably connected to the slide seat; and A second connecting rod is provided between the front leg tube and the rear leg tube, and its two ends are rotatably connected to the front leg tube and the rear leg tube respectively; The upper ends of the two first connecting rods are respectively rotatably connected to the corresponding sliding seats, and the lower ends are respectively rotatably connected to the corresponding front leg tubes; When the slide moves upward, the second connecting rod pulls the lower end of the rear leg tube to swing toward the front leg tube, and the two first connecting rods drive the two front leg tubes to move in opposite directions; When the slide moves downward, the second connecting rod can push the lower end of the rear leg tube to swing away from the front leg tube, and the two first connecting rods can drive the two front leg tubes to move in opposite directions.

[0006] Optionally, a sliding sleeve is provided on the front leg tube, the sliding sleeve is connected to the front leg tube slide, a connecting hole corresponding to the sliding sleeve is provided on the sliding seat, and the sliding sleeve is limited to the connecting hole.

[0007] Optionally, the rear leg tube is arranged in an arc shape, and its inner arc surface faces the front leg tube, one end of the second connecting rod is rotatably connected to the middle part of the inner arc surface of the rear leg tube, and the other end is rotatably connected to the lower end of the front leg tube.

[0008] Optionally, a limiting member is provided on the side wall of the front leg tube, the limiting member is located below the slide seat, and the slide seat can lean against the limiting member.

[0009] Optionally, the slide seat is extended backward for applying force by the palm.

[0010] Optionally, a flexible cushion is further included, and the flexible cushion is connected to the two sliding seats.

[0011] Optionally, a handle is provided on the flexible cushion.

[0012] Optionally, a handle is further included, and the front end of the slide is provided with the handle, and the handle is extended forward.

[0013] Optionally, the handle includes a gripping portion and a connecting portion provided at the rear end of the gripping portion, the connecting portion is extended downward, and a sleeve hole is provided on the connecting portion; The upper end of the first connecting rod is provided with a first connecting arm extending radially outward, and the side of the slide seat facing the other slide seat is provided with two second connecting arms respectively connected to the two ends of the first connecting arm in rotation; The sleeve hole is adapted to the second connecting arm, and the second connecting arm located in the front passes through the sleeve hole; The upper end of the connecting portion is provided with a positioning portion extending backward, the upper ends of the opposite sides of the two slides extend inward to form a brim, the positioning portion rests on the lower end of the brim, and the upper end of the brim is provided with a fastener, which passes through the brim and is connected to the positioning portion.

[0014] Optionally, the side frame further includes an armrest, a front wheel and a rear wheel, the armrest is arranged at the upper end of the front leg tube, the front wheel is arranged at the lower end of the front leg tube, and the rear wheel is arranged at the lower end of the rear leg tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by applying force to the slide to move the slide up and down, the two actions of folding or unfolding the rear leg tubes and the two side frames can be completed simultaneously, and the rollator can be flexibly and quickly switched between the folded state and the unfolded state according to the user's needs. The operation is simple, and it can adapt to the use of different users. It can reduce storage space, facilitate storage and carrying, and can greatly improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional diagram after the present invention is unfolded.

[0018] Figure 2 This is a three-dimensional diagram of the present invention after the flexible seat cushion is hidden and folded.

[0019] Figure 3 It is a side view of the present invention.

[0020] Figure 4 Schematic diagram of the explosion of the sliding seat and the sliding sleeve in the present invention.

[0021] Figure 5 It is a three-dimensional diagram of the handle of the present invention.

[0022] Figure 6 For the Figure 1 A partial enlarged schematic diagram of area A is shown in FIG.

[0023] In the picture: 100, side frame; 110, front leg tube; 111, sliding sleeve; 112, stopper; 120, sliding seat; 121, connecting hole; 122, brim; 123, fastener; 124, second connecting arm; 130, rear leg tube; 140, second connecting rod; 150, armrest; 160, front wheel; 170, rear wheel; 200, first connecting rod; 210 first connecting arm; 300, flexible cushion; 310, handle; 400, handle; 410, gripping portion; 420, connecting portion; 421, sleeve hole; 430, positioning portion. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the embodiments of the present invention, it should be understood that if there are directional indications in the embodiments of the present invention, such as the orientation or position relationship of up, down, left, right, front, back, inside, and outside, the orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0027] In the embodiments of the present invention, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connected," and "fixed" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integration. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary. They may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on the specific circumstances.

[0028] like Figures 1 to 6 As shown, an embodiment of the present invention provides a rollator, comprising two symmetrically arranged side frames 100 , two cross-rotatably connected first connecting rods 200 , a flexible seat cushion 300 and a handle 400 .

[0029] Specifically, the side frame 100 includes a front leg tube 110, a slide 120, a rear leg tube 130 and a second connecting rod 140, wherein the slide 120 is movably arranged on the front leg tube 110; the rear leg tube 130 is obliquely arranged on the rear side of the front leg tube 110, and its upper end is close to the front leg tube 110 and is rotatably connected to the slide 120; the second connecting rod 140 is arranged between the front leg tube 110 and the rear leg tube 130, and its two ends are respectively rotatably connected to the front leg tube 110 and the rear leg tube 130; the upper ends of the two first connecting rods 200 are respectively rotatably connected to the corresponding slide 120, and the lower ends are respectively rotatably connected to the corresponding front leg tube 110.

[0030] Furthermore, the side frame 100 also includes an armrest 150 , a front wheel 160 and a rear wheel 170 , wherein the armrest 150 is arranged at the upper end of the front leg tube 110 , the front wheel 160 is arranged at the lower end of the front leg tube 110 , and the rear wheel 170 is arranged at the lower end of the rear leg tube 130 .

[0031] Furthermore, when the slide 120 moves upward, the second connecting rod 140 can pull the lower end of the rear leg tube 130 to swing toward the direction close to the front leg tube 110, thereby realizing the folding of the rear leg tube 130. At the same time, the two first connecting rods 200 can drive the two front leg tubes 110 to move in relative directions, thereby realizing the folding of the two side frames 100.

[0032] When the slide 120 moves downward, the second connecting rod 140 can push the lower end of the rear leg tube 130 to swing away from the front leg tube 110, thereby folding the rear leg tube 130, and the two first connecting rods 200 can drive the two front leg tubes 110 to move in opposite directions, thereby folding the two side frames 100.

[0033] For example, when the user needs to fold the unfolded rollator, the user can lift the two slides 120 or one of the slides 120 with one or both hands at the same time, so that the two rear side frames 100 and the rear leg tubes 130 on the two side frames 100 can be folded synchronously; when the user needs to unfold the folded rollator, the user can tilt the rollator to use one of the side frames 100 as a support, lift the other side frame 100, and further press down the two slides 120 or one of the slides 120 with one or both hands at the same time, so that the two rear side frames 100 and the rear leg tubes 130 on the two side frames 100 can be unfolded synchronously.

[0034] The rollator is easy to operate, can quickly switch the state of the rollator, adapt to the use of different users, can reduce storage space, is convenient for storage and carrying, and can greatly improve the user experience.

[0035] In one embodiment, if Figure 1 and 4 As shown, a sliding sleeve 111 is provided on the front leg tube 110, and the sliding sleeve 111 is connected to the slide of the front leg tube 110. A connecting hole 121 corresponding to the sliding sleeve 111 is provided on the sliding seat 120, and the sliding sleeve 111 is limited to the connecting hole 121. Specifically, the sliding sleeve 111 is connected to the connecting hole 121 by a snap-fitting manner, and the upper end of the sliding sleeve 111 is against the upper edge of the connecting hole 121, and the lower end of the sliding sleeve 111 is clamped at the lower edge of the connecting hole by a snap buckle. The setting of the sliding sleeve 111 can ensure the smoothness and stability of the up and down movement of the sliding seat 120, and avoid shaking, offset and the like of the sliding seat 120 during movement.

[0036] In one embodiment, if Figure 1 、 2As shown in Figure 3, the rear leg tube 130 is arranged in an arc shape, and its inner arc surface faces the front leg tube 110, thereby improving the force-bearing capacity of the rear leg tube 130 and improving the stability of the rollator. Furthermore, one end of the second connecting rod 140 is rotatably connected to the middle part of the inner arc surface of the rear leg tube 130, and the other end is rotatably connected to the lower end of the front leg tube 110, thereby ensuring that the second connecting rod 140 can drive and push the rear leg tube 130 to swing.

[0037] In one embodiment, if Figure 1 and 2 As shown, a limit member 112 is provided on the side wall of the front leg tube 110. The limit member 112 is located below the slide 120. The slide 120 can abut against the limit member 112. The limit member 112 limits the downward movement of the slide 120, thereby preventing the slide 120 from excessively moving downward, thereby preventing damage to the rollator structure or safety hazards, and ensuring the stability of the rollator structure when deployed. Specifically, the limit member 112 is preferably a bolt. The present invention does not impose any special restrictions on the specific shape of the limit member 112. The limit member 112 only needs to be able to support and limit the transition downward movement of the slide 120.

[0038] In one embodiment, if Figure 3 As shown, the slide 120 is extended backward for palm force application, thereby improving the convenience and efficiency of user operation. Specifically, a notch is provided on the side of the extended end of the slide 120 to reduce its height so that the extended end of the slide 120 is suitable for palm gripping and force application.

[0039] In one embodiment, if Figure 1 As shown, the flexible seat cushion 300 is connected to the two slides 120. Specifically, the two slides 120 are connected by a snap connection, a fixed connection, or the like. The flexible seat cushion 300 is made of fabric or the like. The flexible seat cushion 300 can be used by the user to sit down and rest, thereby improving the user experience. Furthermore, a handle 320 is provided on the flexible seat cushion 300. The user can also fold the walker by pulling the handle 320 upwards, thereby providing the user with more operating options and making the operation more convenient.

[0040] In one embodiment, if Figure 1 As shown, a handle 400 is provided at the front end of the slide 120. The handle 400 extends forward and can be used as a support for the user to hold on to, or as a force-bearing part for lifting the slide 120 upward to fold the rollator.

[0041] In certain specific embodiments, such as Figure 5 and 6As shown, the handle 400 includes a gripping portion 410 and a connecting portion 420 arranged at the rear end of the gripping portion 410, the connecting portion 420 extends downward, and a sleeve hole 421 is provided on the connecting portion 420, and the upper end of the first connecting rod 200 is provided with a first connecting arm 210 extending radially outward thereof, and the side of the slide 120 facing the other slide 120 is provided with two second connecting arms 124 respectively connected to the two ends of the first connecting arm 210, specifically, the second connecting arm 124 is extended inward horizontally.

[0042] Furthermore, the sleeve hole 421 is adapted to the second connecting arm 124 , and the second connecting arm 124 located in the front passes through the sleeve hole 421 , which is convenient for installation. Specifically, the sleeve hole 421 is rectangular to prevent it from rotating and improve stability.

[0043] Furthermore, a positioning portion 430 extending backward is provided at the upper end of the connecting portion 420, and the upper ends of the opposite sides of the two slides 120 extend inward to form a brim 122. The positioning portion 430 abuts against the lower end of the brim 122, thereby improving the stability of the handle 400 and improving the safety of its use. A fastener 123 is provided at the upper end of the brim 122, and the fastener 123 passes through the brim 122 and is connected with the positioning portion 430, further improving the stability of the handle 400. The fastener 123 is a screw, bolt, etc.

[0044] It should be noted that the two ends of the flexible cushion 300 in this embodiment rest against the upper end of the brim 122, and the fastener 123 passes through the flexible cushion 300. There are multiple fasteners 123 along the width direction of the flexible cushion 300 to ensure the stability of the connection between the flexible cushion 300 and the two slides 120.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rollator, characterized in that: The invention comprises two symmetrically arranged side frames (100) and two cross-rotating first connecting rods (200), wherein the side frames (100) include: Front leg tube (110); A sliding seat (120) is arranged on the front leg tube (110) so as to be movable up and down; A rear leg tube (130) is obliquely arranged at the rear side of the front leg tube (110), with its upper end close to the front leg tube (110) and rotatably connected to the slide seat (120); and A second connecting rod (140) is disposed between the front leg tube (110) and the rear leg tube (130), and its two ends are rotatably connected to the front leg tube (110) and the rear leg tube (130) respectively; The upper ends of the two first connecting rods (200) are respectively rotatably connected to the corresponding sliding seats (120), and the lower ends are respectively rotatably connected to the corresponding front leg tubes (110); When the sliding seat (120) moves upward, the second connecting rod (140) can pull the lower end of the rear leg tube (130) to swing toward the direction close to the front leg tube (110), and the two first connecting rods (200) can drive the two front leg tubes (110) to move in opposite directions; When the sliding seat (120) moves downward, the second connecting rod (140) can push the lower end of the rear leg tube (130) to swing in a direction away from the front leg tube (110), and the two first connecting rods (200) can drive the two front leg tubes (110) to move in opposite directions.

2. A rollator according to claim 1, characterized in that: A sliding sleeve (111) is sleeved on the front leg tube (110), the sliding sleeve (111) is connected to the slideway of the front leg tube (110), a connecting hole (121) corresponding to the sliding sleeve (111) is provided on the sliding seat (120), and the sliding sleeve (111) is limited to the connecting hole (121).

3. The rollator according to claim 1, characterized in that: The rear leg tube (130) is arranged in an arc shape, and its inner arc surface faces the front leg tube (110); one end of the second connecting rod (140) is rotatably connected to the middle part of the inner arc surface of the rear leg tube (130), and the other end is rotatably connected to the lower end of the front leg tube (110).

4. The rollator according to claim 1, characterized in that: A limiting member (112) is provided on the side wall of the front leg tube (110), the limiting member (112) is located below the sliding seat (120), and the sliding seat (120) can abut against the limiting member (112).

5. The rollator according to claim 1, characterized in that: The sliding seat (120) is extended backwards to be used for applying force by the palm.

6. The rollator according to claim 1, characterized in that: Also includes: A flexible seat cushion (300) is connected to the two sliding seats (120).

7. The rollator according to claim 6, characterized in that: The flexible cushion (300) is provided with a handle (320).

8. The rollator according to claim 1, characterized in that: Also includes: A handle (400) is provided at the front end of the slide seat (120), and the handle (400) is extended forward.

9. The rollator according to claim 8, characterized in that: The handle (400) comprises a gripping portion (410) and a connecting portion (420) provided at the rear end of the gripping portion (410), wherein the connecting portion (420) extends downward and is provided with a sleeve hole (421); The upper end of the first connecting rod (200) is provided with a first connecting arm (210) extending radially outward, and the side of the slide seat (120) facing the other slide seat (120) is provided with two second connecting arms (124) rotatably connected to the two ends of the first connecting arm (210). The sleeve hole (421) is adapted to the second connecting arm (124), and the second connecting arm (124) located in the front passes through the sleeve hole (421); The upper end of the connecting portion (420) is provided with a positioning portion (430) extending backward, and the upper ends of the opposite sides of the two slides (120) extend inward to form a brim (122), and the positioning portion (430) abuts against the lower end of the brim (122). The upper end of the brim (122) is provided with a fastener (123), and the fastener (123) passes through the brim (122) and is connected to the positioning portion (430).

10. A rollator according to any one of claims 1 to 9, characterized in that: The side frame (100) further includes a handrail (150), a front wheel (160), and a rear wheel (170), wherein the handrail (150) is arranged at the upper end of the front leg tube (110), the front wheel (160) is arranged at the lower end of the front leg tube (110), and the rear wheel (170) is arranged at the lower end of the rear leg tube (130).

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