Spring deflector rod type frame folding device

Abstract

The utility model discloses a spring deflector rod type frame folding device, which belongs to the field of frame folding devices, and comprises two folding rods and a control part, the tail ends of the two folding rods are mutually matched concave-convex plug-in structures, the two folding rods are movably connected through a rotating shaft, and the control part is connected with the rotating shaft. The control component comprises a deflector rod assembly and an ejector block, the deflector rod assembly is arranged at the tail end of the folding rod of the concave structure, the ejector block is arranged at the tail end of the folding rod of the convex structure, and the deflector rod assembly and the ejector block can be matched with each other to be fixed. The walking aid mainly comprises the control part and the folding rod structure matched with the control part for use, the structure is simple, the use method is simple, the folding function of the folding rod can be achieved only by shifting the shifting rod in the shifting rod groove, the size of the walking aid can be effectively reduced, and the walking aid is convenient to carry and transport when a user goes out. And the folding structure of the walking aid can be reinforced to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the field of frame folding devices, and more specifically, relates to a spring lever type frame folding device. Background Art

[0002] A walking aid, also known as a lower limb orthosis, is a walking support tool for the elderly with inconvenient mobility, certain trauma patients, hemiplegic patients and the disabled to walk by themselves or for limb physical exercise. People can walk slowly with ease by holding it.

[0003] In the current market, the more common structure of a walking aid is to have four feet, and the frame surrounds the user in a circle in front. According to actual usage requirements, the bottom of the feet of the walking aid can also be selected as anti-slip fixed feet or more convenient moving tires. And the structure of the frame itself has been designed with various functions added to the walking aid, which has also made the frames of walking aids appear in various shapes.

[0004] For example, a walking aid with a support rod slot can not only help postoperative patients recover early, but also hang items such as infusion bottles and drainage bags, allowing patients to get out of bed and move while receiving infusion. Another example is a walking aid with a seat installed, which allows the user to sit directly on the walking aid when they are tired. There are also two-wheel and four-wheel walking aids that are more convenient to move for users with different rehabilitation levels.

[0005] Since the overall frame volume of the walking aid is relatively large, it is not convenient to carry and transport the walking aid. Especially for the wheeled walking aid with a seat, most of the wheeled walking aids on the market adopt a folding mechanism similar to that of a folding stool that folds back and forth. However, this type of structure is more suitable for the pressure above the seat, and the horizontal resistance brought by pushing the wheeled walking aid may cause the whole to fold up, affecting normal use.

[0006] Therefore, for the foldable wheeled walking aid, a new design is needed that can reinforce the defects of this type of structure without affecting its normal folding. Content of the Utility Model

[0007] Aiming at the above problems existing in the prior art, the purpose of the present utility model is to provide a spring lever type frame folding device.

[0008] To solve the above problems, the technical solutions adopted by the present utility model are as follows:

[0009] A spring lever type frame folding device comprises a folding rod and a control component, wherein two folding rods are provided, and the ends of the two folding rods are concave-convex plug-in structures that match each other. The two folding rods are movably connected through a rotating shaft, and the control component comprises a lever assembly and a top block, wherein the lever assembly is arranged at the end of the folding rod with a concave structure, and the top block is arranged at the end of the folding rod with a convex structure, and the lever assembly and the top block can match each other for fixation.

[0010] A lever groove is provided on the folding rod of the recessed structure, and the lever is arranged inside the lever groove through a lever rotating shaft. One end of the lever extends to the outside of the folding rod and the other end is located at the bottom of the lever groove. A slider is provided at one end of the lever located at the bottom of the lever groove and contacts with the slider. A reset spring is provided between the slider and the lever groove. The slider extends outside the recessed structure of the folding rod and forms a U-shaped bayonet with the top block fixing groove.

[0011] The top block can be matched with the U-shaped bayonet for fixing.

[0012] The end of the sliding block extends from the shifting rod groove to a part of the recessed structure of the folding rod.

[0013] A slope is arranged on one side of the end of the sliding block facing the outer surface of the folding rod.

[0014] The side of the top block facing the inner side of the folding rod is provided with an inclined surface.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model has a simple structure and is easy to operate. The lever controls the slider to decide whether to release or fix the top block of the folding rod, thereby controlling the relative rotation of the two folding rods. The lever rotates around the lever shaft, and the overall structure is a labor-saving lever. It is easier to control the slider through the lever. After the lever is unlocked by toggling the lever, the two folding rods can be folded, effectively reducing the size of the walker, making it more convenient to carry and transport. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 for Figure 2 The cross-section in the middle D direction;

[0020] Figure 4 It is a top view of the utility model;

[0021] Figure 5 The first step of the rotation schematic diagram of the present utility model;

[0022] Figure 6 The second step of the rotation schematic diagram of the present utility model;

[0023] Figure 7 The third step of the rotation schematic diagram of the present utility model;

[0024] In the figure: 1, folding rod; 2, lever; 3, slider; 4, lever groove; 5, rotating shaft; 6, lever rotating shaft; 7, spring; 8, top block; 9, top block fixing groove. Specific embodiments

[0025] The present utility model will be further described below in conjunction with specific embodiments.

[0026] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, the present utility model mainly includes two folding rods 1 that can be bent with each other and its control components.

[0027] Two folding rods 1 are provided. The connection part of the two folding rods 1 is a concave-convex plug-in structure that can match each other. Among them, the folding rod 1 with a concave structure at the end is the first folding rod, and the folding rod 1 with a convex structure at the end is the second folding rod.

[0028] The two folding rods 1 are connected by a rotating shaft 5, and the folding rods 1 can rotate and fold relative to each other with the rotating shaft 5 as the center.

[0029] The control components mainly include a lever 2, a slider 3, and a top block 8. A lever groove 4 is opened inside the concave part of the first folding rod. The lever 2 is arranged in the lever groove 4 and fixed by a lever rotating shaft 6. The upper section of the lever 2 extends out of the outer surface of the folding rod 1, and a certain space is left in the part of the lever groove 4 that accommodates the upper section of the lever 2, which is convenient for the user to more conveniently move the lever. The lower half of the lever 2 is in movable contact with the slider 3. When the lever 2 rotates, it will drive the slider 3 at the bottom of the lever groove 4 to move. A spring 7 is arranged between the rear of the slider 3 and the lever groove 4. When the slider 3 moves, the spring 7 will be compressed along with the movement of the slider 3. After the user stops moving the lever 2, the slider 3 will be reset under the action of the spring 7, and at the same time, the slider 3 will drive the lever 2 in the reverse direction to make the lever 2 return to the initial state. The specific structure is as Figure 2 shown in.

[0030] The portion of the slider 2 that faces the end of the first folding rod protrudes a small section from the recessed portion of the first folding rod when the lever 2 is in the initial state. A top block fixing groove 9 is also provided in the recessed portion of the first folding rod. The protruding portion of the slider 2 and the top block fixing groove 9 can form a U-shaped bayonet, and the U-shaped bayonet can just accommodate the top block 8 inside it.

[0031] The top block 8 is arranged at the end of the protrusion of the second folding rod, and the distance of the plug-in structure between the first folding rod and the second folding rod is set according to the distance between the top block 8 and the top block fixing groove 9, ensuring that when the second folding rod rotates, the top block 8 can be blocked by the top block fixing groove 9, and its width is also designed to be able to smoothly enter the width of the U-shaped bayonet formed by the end of the slider 3 and the top block fixing groove 9.

[0032] The movement of the top block 8 is controlled by the slider 3, and whether the first folding rod and the second folding rod can be rotated and folded is further controlled.

[0033] In order to make it easier for the top block 8 to enter the U-shaped slot, an inclined surface is provided on the end of the slider 3 facing the outside of the folding rod 1, and an inclined surface matching the inclined surface of the slider 3 is provided on the end of the slider 8 facing the center direction of the folding rod 1. When the top block 8 moves from the outside of the slider 3 toward the slider 3, the two inclined surfaces contact each other, pushing the slider 3 in the opposite direction to move toward the inside of the first folding rod, directly entering the U-shaped slot at the end of the first folding rod, and then the spring of the slider 3 pushes the slider 3 back into the recessed structure of the first folding rod, locking the top block 8 in the U-shaped slot, completing the locking of the two folding rods so that they can no longer rotate relative to each other.

[0034] When releasing the top block 8, the working steps are as follows: Figure 5 , Figure 6 and Figure 7 As shown, by moving the lever 2, the slider 3 is pulled back and the top block 8 is released, and the top block 8 is disengaged from the U-shaped slot in the first folding rod, and the second folding rod can rotate relatively around the rotating shaft 5 to fold the entire component.

[0035] The device has a simple structure and a simple method of use. The folding function of the folding rod 1 can be realized by only moving the lever 2 in the lever groove 4, which can effectively reduce the size of the walker, facilitate travel and transportation, and can also strengthen the folding structure of the walker to a certain extent.

Claims

1. A spring lever type frame folding device, characterized in that: It includes a folding rod and a control component, wherein two folding rods are provided, and the ends of the two folding rods are concave-convex plug-in structures that match each other. The two folding rods are movably connected through a rotating shaft, and the control component includes a lever assembly and a top block, wherein the lever assembly is arranged at the end of the folding rod with a concave structure, and the top block is arranged at the end of the folding rod with a convex structure, and the lever assembly and the top block can be matched with each other for fixation.

2. A spring lever type frame folding device according to claim 1, characterized in that: A lever groove is provided on the folding rod of the recessed structure, and the lever is arranged inside the lever groove through a lever rotating shaft. One end of the lever extends to the outside of the folding rod and the other end is located at the bottom of the lever groove. A slider is provided at one end of the lever located at the bottom of the lever groove and contacts with the slider. A reset spring is provided between the slider and the lever groove. The slider extends outside the recessed structure of the folding rod and forms a U-shaped bayonet with the top block fixing groove.

3. A spring lever type frame folding device according to claim 2, characterized in that: The top block can be matched with the U-shaped bayonet for fixing.

4. The spring lever type frame folding device according to claim 2, characterized in that: The end of the sliding block extends from the shifting rod groove to a part of the recessed structure of the folding rod.

5. The spring lever type frame folding device according to claim 4, characterized in that: A slope is arranged on one side of the end of the sliding block facing the outer surface of the folding rod.

6. The spring lever type frame folding device according to claim 1, characterized in that: The side of the top block facing the inner side of the folding rod is provided with an inclined surface.

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