Spring sliding block type frame folding device

Abstract

The utility model discloses a spring sliding block type frame folding device, and belongs to the field of frame folding devices. The walking aid mainly comprises the control part and the folding rod tail end structure matched with the control part for use, the structure is simple, operation is convenient and fast, folding of the two folding rods can be achieved by shifting the sliding blocks, and the overall size of the walking aid is reduced. When the two folding rods are mutually unfolded, the control part can fix the folding rods through the structure of the control part, the folding rods are prevented from being passively folded when receiving external force, and according to arrangement of all parts of the control part, the folding rods are limited to be of a single-side folding structure. When the folding rod tends to be folded in the other direction, stronger supporting force is provided, and the stability is higher.

Description

Technical Field

[0001] The utility model belongs to the field of frame folding devices, in particular to a spring slider type frame folding device. Background Art

[0002] A walker, also known as a lower limb orthosis, is a walking support tool that is used by the elderly with limited mobility, certain traumatic patients, hemiplegic patients and disabled people to help them walk or exercise their limbs. People can walk slowly and easily with the help of it.

[0003] In the current market, the most common walker structure is a structure with four legs and a frame that surrounds the front of the user. According to actual use needs, the bottom of the legs of the walker can also be non-slip fixed legs or tires that are more convenient to move. The structure of the frame itself has been designed with various functions to add to the walker, which also makes the walker frame appear in various shapes.

[0004] For example, a walker with a support rod slot can not only help postoperative patients recover soon, but also hang infusion bottles, drainage bags and other items, so that they can get out of bed and move around while receiving infusion. Another example is a walker with a seat, so that users can sit directly on the walker when they are tired. In addition, users with different levels of recovery can choose two-wheeled or four-wheeled walkers that are more convenient to move.

[0005] However, since the overall frame volume of the walker is relatively large, it is not convenient to carry and transport the walker, especially the wheeled walker with a seat. Most of the wheeled walkers on the market use a folding mechanism similar to a folding stool that folds forward and backward. However, this type of structure is more suitable for the pressure above the seat. The horizontal resistance brought by the wheeled walker when being pushed may cause the whole to fold up, affecting normal use.

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

[0007] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a spring slider type frame folding device.

[0008] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0009] A spring slider 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, and the two folding rods are movably connected through a rotating shaft, and the control component comprises a slider and a top block, the slider is arranged on the folding rod with a concave structure at the end, and the top block is arranged on the folding rod with a convex structure, and the slider and the top block can be matched and fixed to each other.

[0010] The control component also includes a slider groove and a top block fixing groove. The slider, slider groove and top block fixing groove are arranged on the inner side of the recessed part of the recessed structure folding rod. The slider is arranged in the slider groove. A spring is arranged between the slider and the slider groove. The slider groove is arranged at a position closer to the middle part of the folding rod relative to the top block fixing groove. The end of the slider can extend out of the slider groove and the top block fixing groove to form a U-shaped bayonet.

[0011] The top block is arranged at the end of the folding rod of the raised structure, and the top block can be matched with and fixed to the U-shaped bayonet.

[0012] The part of the end of the sliding block facing the outside of the folding rod is an inclined surface structure.

[0013] The part of the end of the top block facing the inner side of the folding rod is an inclined surface structure.

[0014] A limiting device is arranged below the top block fixing groove, and the limiting device passes through the top block fixing groove and contacts the sliding block.

[0015] The limiting device is a screw.

[0016] The upper surface of the slider arranged in the slider groove is higher than the outer surface of the folding rod.

[0017] The portion of the sliding block higher than the folding rod is provided with anti-slip grooves.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model has a simple structure and is easy to operate. The two folding rods can be folded by toggling a slider, thereby reducing the overall size of the walker. When the two folding rods are unfolded, the control component can fix the folding rods based on its own structure to prevent the folding rods from passively folding when receiving external force. In addition, according to the settings of various parts of the control component, the folding rods are limited to a single-side folding structure, providing stronger support force and greater stability when the folding rods have a tendency to fold in another direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the components of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 for Figure 2 The cross-section in the middle D direction;

[0023] Figure 4 It is a top view of the utility model;

[0024] Figure 5 This is the first step of the rotation diagram of the utility model;

[0025] Figure 6 This is the second step of the rotation diagram of the utility model;

[0026] Figure 7 This is the third step of the rotation diagram of the utility model;

[0027] In the figure: 1, folding rod; 2, slider; 3, spring; 4, slider groove; 5, rotating shaft; 6, limit screw; 7, top block; 8, top block fixing groove. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with specific embodiments.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the main body of the utility model is a control device for controlling two folding rods 1 to rotate and bend and a folding rod 1 structure adapted to the device.

[0030] Two folding rods 1 are provided, and the connection at their ends is a concave-convex plug-in structure that matches each other. For the convenience of description, the folding rod 1 with a concave connection end is named the first folding rod, and the folding rod 1 with a convex connection end is named the second folding rod.

[0031] The first folding rod and the second folding rod are fixed by a rotating shaft 5. Figure 1 As shown in the figure, the two folding rods 1 can rotate relative to each other around the rotating shaft 5. The control components of the folding rods 1 are respectively arranged at the connecting ends of the two folding rods 1, wherein the slider 2, the slider groove 4 and the top block fixing groove 8 are arranged on the first folding rod, and the top block 7 is arranged on the second folding rod.

[0032] The top block fixing groove 8 is arranged on the outside of the recessed part of the first folding rod, and the whole thereof protrudes a part of the recessed part of the first folding rod. A slider groove 4 is arranged on the side of the top block fixing groove 8 facing the middle part of the first folding rod, and a slider 2 is arranged in the slider groove 4. The overall structure of the slider 2 is relatively thick, and the upper surface can protrude from the slider groove 4 and is slightly higher than the outer surface of the first folding rod. At the same time, anti-slip texture is also arranged on the part protruding from the outer surface of the first folding rod, which is more convenient for the user to operate and control.

[0033] The specific structure of the slider 2 is as follows: Figure 2 As shown, the upper portion of the slider 2 is the contact portion that protrudes out of the slider groove 4 when in use, and the lower portion of the slider 2 is the control portion that can extend a portion of the first folding rod groove structure. A reset spring 3 is provided between the rear of the control portion of the slider 2 and the slider groove 4, so that the slider 2 can automatically reset after sliding.

[0034] A top block 7 is provided at the end of the protruding part of the second folding rod. The control part of the slider 2 extending out of the first folding rod and the top block fixing groove 8 can form a horizontal U-shaped bayonet structure, and the thickness of the top block 7 is slightly smaller than the U-shaped bayonet structure. When the top block 7 is in the U-shaped bayonet structure, it will be fixed inside it by the bayonet, and the first folding rod and the second folding rod can no longer rotate around the rotating shaft 5.

[0035] In order to make the top block 7 enter the U-shaped bayonet more smoothly, the end of the control part of the slider 2 is provided with an inclined surface inclined toward the upper side of the folding rod 1, and the end of the top block 7 is provided with an inclined surface inclined toward the central part of the folding rod 1. When the second folding rod rotates, the inclined surface of the top block 7 will contact the inclined surface of the slider 2. After the inclined surfaces contact each other, the slider 2 is pushed into the inside of the slider groove 4, and the top block 7 can smoothly enter the U-shaped bayonet formed by the slider 2 and the top block fixing groove 8, completing the fixed limit operation. When the top block 7 completely enters the U-shaped bayonet, the slider 2 is pushed back to the original position under the action of the spring 3, and the top block 7 is limited in the U-shaped bayonet and can no longer move, and the two folding rods 1 can no longer rotate, completing the overall fixation.

[0036] A limiting groove is also provided at the bottom of the slider 2, and a limiting screw 6 is provided through the bottom of the top block fixing groove 8, and the top end of the limiting screw 6 just enters the limiting groove at the bottom of the slider 2. Through the setting of the limiting screw 6, the slider 2 will be limited by the limiting groove in the forward and backward movement when moving, thereby enhancing the stability of the slider 2 when sliding to unlock the top block 7, and the slider 2 will not directly fall out of the slider groove 4 due to excessive displacement of the slider 2, affecting normal use.

[0037] When the device is fixed, it is only necessary to rotate the folding rod 1 to a specified position, and the top block 7 will be locked under the guidance of the inclined surfaces of the top block 7 and the slider 2. When the top block 7 is released, the working state is as follows: Figure 5 , Figure 6 , Figure 7 As shown, the sliding block 2 is slid so that it no longer limits the range of motion of the top block 7, thus completing the unlocking step.

[0038] The device has a simple structure and is easy to operate. The folding function can be achieved by simply moving a slider, which can effectively reduce the size of the walker, making it convenient to carry and transport, and can also reinforce the folding structure of the walker to a certain extent.

Claims

1. A spring slider 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 slider and a top block. The slider is arranged on the folding rod with a concave structure at the end, and the top block is arranged on the folding rod with a convex structure. The slider and the top block can be matched and fixed to each other.

2. A spring slider frame folding device according to claim 1, characterized in that: The control component also includes a slider groove and a top block fixing groove. The slider, slider groove and top block fixing groove are arranged on the inner side of the recessed part of the recessed structure folding rod. The slider is arranged in the slider groove. A spring is arranged between the slider and the slider groove. The slider groove is arranged at a position closer to the middle part of the folding rod relative to the top block fixing groove. The end of the slider can extend out of the slider groove and the top block fixing groove to form a U-shaped bayonet.

3. A spring slider frame folding device according to claim 2, characterized in that: The top block is arranged at the end of the folding rod of the raised structure, and the top block can be matched with and fixed to the U-shaped bayonet.

4. A spring slider frame folding device according to claim 1, characterized in that: The part of the end of the sliding block facing the outside of the folding rod is an inclined surface structure.

5. The spring slider frame folding device according to claim 1, characterized in that: The part of the end of the top block facing the inner side of the folding rod is an inclined surface structure.

6. A spring slider frame folding device according to claim 2, characterized in that: A limiting device is arranged below the top block fixing groove, and the limiting device passes through the top block fixing groove and contacts the sliding block.

7. A spring slider frame folding device according to claim 6, characterized in that: The limiting device is a screw.

8. A spring slider frame folding device according to claim 2, characterized in that: The upper surface of the slider arranged in the slider groove is higher than the outer surface of the folding rod.

9. A spring slider frame folding device according to claim 8, characterized in that: The portion of the sliding block higher than the folding rod is provided with anti-slip grooves.

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