A frame structure and a walking aid

Abstract

The present disclosure provides a kind of frame structure and walking aid, frame structure includes support mechanism and folding frame, support mechanism includes first support piece, second support piece and third support piece, folding frame is set between two support mechanisms along horizontal direction, folding frame can be folded or stretched to make the support mechanism of its two ends close to each other or away from each other;Locking mechanism is arranged between first support piece, second support piece and third support piece;Pull wire one end is connected to folding frame, the other end is connected locking mechanism;When folding frame is folded, pull wire is driven to drive locking mechanism to move, to remove the locking between first support piece, second support piece and third support piece, so that second support piece and third support piece can be folded relative to first support piece rotation.This frame structure and walking aid of the present disclosure are linked by pull wire and locking mechanism design, without additional independent unlocking step, just need to pull folding frame to trigger locking removal simultaneously, improve the convenience and folding efficiency.

Description

Technical Field

[0001] This disclosure relates to the field of assistive mobile device technology, and more particularly to a vehicle frame structure and a walking aid. Background Technology

[0002] Existing folding walker products typically only allow for folding in one or two directions. While these products can reduce size to some extent, the folded size is still relatively large, making them inconvenient to carry and store. Especially for mobile walkers that require frequent folding, the storage efficiency of existing folding structures is limited and cannot meet users' higher demands for portability. Utility Model Content

[0003] This disclosure provides a vehicle frame structure and a walking aid to at least solve the above-mentioned technical problems existing in the prior art.

[0004] According to a first aspect of this disclosure, a vehicle frame structure is provided, including a support mechanism and a folding frame. The support mechanism includes a first support member, a second support member, and a third support member, wherein the second support member is rotatably connected to the first support member and the third support member, and there are at least two support mechanisms. The folding frame is horizontally disposed between the two support mechanisms, and the folding frame is foldable or extendable to bring the support mechanisms at both ends closer together or further apart. The structure also includes: A locking mechanism is disposed between the first support member, the second support member, and the third support member; A pull cord is connected at one end to the folding frame and at the other end to the locking mechanism; When the folding frame is folded, the pull cable is pulled to drive the locking mechanism to move, thereby releasing the lock between the first support member, the second support member and the third support member, so that the second support member and the third support member can rotate and fold relative to the first support member.

[0005] In one embodiment, the locking mechanism includes a limiting pin and a first limiting spring; The limiting pin is movably mounted on the first support member via the first limiting spring; The first limiting spring is used to provide the elastic force for the limiting pin to hold or return to the locked position; The pull wire is connected to the limiting pin and is used to pull the limiting pin to move against the force of the first limiting spring.

[0006] In one possible embodiment, the locking mechanism further includes a first limiting component and a second limiting component; The first limiting component is mounted on the second support member; The second limiting component includes a limiting post and a second limiting spring, wherein the limiting post is installed on the third support member in conjunction with the second limiting spring; When the folding frame is pulled to the unlock position by the pull line and the limiting pin is moved to the unlock position, and the second support member is rotated and folded relative to the first support member, the first support member drives the first limiting component to move, so that it presses against and pushes the limiting post, thereby overcoming the elastic force of the second limiting spring and moving the limiting post to unlock the third support member.

[0007] In one embodiment, the folding frame includes two first movable rods and two second movable rods; The ends of the two first movable rods are hinged to form a first hinge point, and the ends of the two second movable rods are hinged to form a second hinge point, with the second hinge point located above the first hinge point. The two first movable rods are respectively arranged in a cross configuration with the two second movable rods, and are hinged at the intersection; The ends of the two first movable rods away from the first hinge point are respectively movably connected to the support mechanisms at both ends; the ends of the two second movable rods away from the second hinge point are respectively rotatably connected to the two support mechanisms.

[0008] In one embodiment, the first end of the pull wire is connected to the limiting pin, and the second end of the pull wire is fixed to the first mounting part on the first movable rod by a second fastener.

[0009] In one possible embodiment, the first mounting portion is located on the first movable rod, adjacent to the cross hinge axis of the first movable rod and the second movable rod, and located above the cross hinge axis.

[0010] In one embodiment, the pull wire is threaded through the second movable rod, and its path is configured such that when the folding frame is folded, the pull wire is pulled by the first movable rod to tension it.

[0011] In one embodiment, a protective sleeve is provided around the periphery of the section where the pull wire passes through the second movable rod, and the two ends of the protective sleeve are respectively fixed to the second movable rod.

[0012] In one embodiment, the first end of the pull wire passes through a wire hole provided on the limiting pin and is fixed by a first fastener.

[0013] According to a second aspect of this disclosure, a walking aid is provided, comprising the frame structure described in any of the above-described embodiments.

[0014] In this disclosure, the frame structure utilizes a linked design of a cable and a locking mechanism, eliminating the need for additional independent unlocking steps. Simply pulling the folding frame simultaneously triggers the locking release, achieving automated and synchronized frame folding, reducing operational steps, and improving ease of use and folding efficiency. The support mechanism achieves vertical folding through the relative rotation of the first, second, and third support members, combined with the horizontal folding of the folding frame, creating a multi-dimensional folding effect. This significantly reduces the storage volume compared to existing single-direction folding structures. Furthermore, this structure is simple, reliable, and easy to manufacture and maintain.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0016] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0017] Figure 1 This invention discloses an exemplary embodiment of a vehicle frame structure, which is shown in the overall structural schematic diagram. Figure 2 A schematic diagram of the folded state of the vehicle frame structure of an exemplary embodiment of this disclosure is shown. Figure 1 ; Figure 3 A schematic diagram of the folded state of the vehicle frame structure of an exemplary embodiment of this disclosure is shown. Figure 2 ; Figure 4 A schematic diagram of a support mechanism for a vehicle frame structure, as shown in an exemplary embodiment of this disclosure, is illustrated.

[0018] The following are the labeling instructions in the diagram: 1. Support mechanism; 2. Folding frame; 3. Locking mechanism; 4. Pull cable; 5. Protective cable sleeve; 11. First support member; 12. Second support member; 13. Third support member; 21. First movable rod; 22. Second movable rod; 31. Limiting pin; 32. First limiting spring; 33. First limiting assembly; 34. Second limiting assembly; 101. Decorative cover; 102. Countersunk screw; 103. Cover plate; 104. Hardware washer; 105. Spring washer; 106. Hardware limiting washer; 107. Plastic washer; 108. First screw; 109. U-shaped part; 110. Second screw; 111. Friction plate; 112. Bushing; 210. First hinge point; 211. First mounting part; 220. Second hinge point; 341. Limiting post; 342. Second limiting spring. Detailed Implementation

[0019] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0020] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0021] Reference Figures 1-3 As shown, an exemplary embodiment of the vehicle frame structure disclosed herein includes a support mechanism 1 and a folding frame 2. The support mechanism 1 includes a first support member 11, a second support member 12, and a third support member 13. The second support member 12 is rotatably connected to both the first support member 11 and the third support member 13. There are at least two support mechanisms 1. The folding frame 2 is horizontally disposed between the two support mechanisms 1. The folding frame 2 can be folded or extended so that the support mechanisms 1 at both ends move closer to or further apart from each other. The vehicle frame structure also includes a locking mechanism 3 and a pull cable 4. The locking mechanism 3 is disposed between the first support member 11, the second support member 12, and the third support member 13. One end of the pull cable 4 is connected to the folding frame 2, and the other end is connected to the locking mechanism 3. When the folding frame 2 is folded, the pull cable 4 is pulled, driving the locking mechanism 3 to move, thereby releasing the locking of the first support member 11, the second support member 12, and the third support member 13, allowing the second support member 12 and the third support member 13 to rotate and fold relative to the first support member 11.

[0022] In this embodiment, the folding frame 2 is horizontally positioned between two support mechanisms 1, connected to the support mechanisms 1 via hinges or sliding connections. The folding frame 2 can be folded or extended. When the folding frame 2 is folded, the support mechanisms 1 at both ends move closer to each other; when the folding frame 2 is extended, the support mechanisms 1 move further apart. The folding frame 2 can employ common folding mechanisms, such as scissor-type or linkage-type folding frames. A locking mechanism 3 is positioned between the first support member 11, the second support member 12, and the third support member 13 to lock the relative positions of the first support member 11, the second support member 12, and the third support member 13, preventing them from rotating accidentally. The locking mechanism 3 may include components such as a latch, a spring, and a guide groove. In the locked state, the latch engages in the groove of the second support member 12 or the third support member 13; in the unlocked state, the latch disengages from the groove. One end of a pull cable 4 is connected to the folding frame 2, for example, to a movable part of the folding frame 2, and the other end is connected to a moving part of the locking mechanism 3, such as the latch. The pull cable 4 can be a steel cable or other flexible traction element. When the folding frame 2 is folded, the movement of the folding frame 2 pulls the pull cable 4, which in turn pulls the moving part of the locking mechanism 3, causing the locking mechanism 3 to switch from the locked state to the unlocked state, thereby releasing the lock on the first support member 11, the second support member 12, and the third support member 13 at once. At this time, the second support member 12 and the third support member 13 can rotate freely and fold relative to the first support member 11. In practical applications, the user only needs to push or pull the folding frame 2 to fold it, and the lock mechanism 3 will be automatically unlocked by the pull cable 4, while the support mechanism 1 begins to fold. When the frame needs to be unfolded, the user reverses the operation of the folding frame 2, and the support mechanism 1 unfolds under the action of external force. The locking mechanism 3 can automatically reset through elastic elements such as springs, relocking the second support member 12 and the third support member 13.

[0023] In summary, the frame structure disclosed herein, through the linkage design of the pull cable 4 and the locking mechanism 3, eliminates the need for additional independent unlocking steps. Simply pulling the folding frame 2 synchronously triggers the locking release, achieving automation and synchronization of frame folding, reducing operational steps, and improving ease of use and folding efficiency. The support mechanism 1 achieves vertical folding through the relative rotation of the first support member 11, the second support member 12, and the third support member 13. Combined with the horizontal folding of the folding frame 2, it forms a multi-dimensional folding effect, significantly reducing the storage volume compared to existing single-direction folding structures. Furthermore, this structure is simple, reliable, and easy to manufacture and maintain.

[0024] Reference Figure 1 and Figure 4As shown, in one embodiment, the locking mechanism 3 includes a limiting pin 31 and a first limiting spring 32. The limiting pin 31 is movably mounted on the first row support member via the first limiting spring 32. The first limiting spring 32 provides an elastic force to keep the limiting pin 31 in or return it to the locked position. A pull cable 4 is connected to the limiting pin 31 and is used to pull the limiting pin 31 to move against the force of the first limiting spring 32.

[0025] In this embodiment, the locking mechanism 3 specifically includes a limiting pin 31 and a first limiting spring 32. The limiting pin 31 is movably mounted on the first support member 11 via the first limiting spring 32, and the two together constitute an elastic locking assembly. The first limiting spring 32 is sleeved or abuts between the limiting pin 31 and the first support member 11. In its natural state, the first limiting spring 32 provides elastic force, keeping the limiting pin 31 in the locked position. At this time, the limiting pin 31 engages with the second support member 12 and the third support member 13, restricting their relative rotation. When the limiting pin 31 is moved by an external force, the first limiting spring 32 is compressed or stretched, storing elastic potential energy. After the external force disappears, it can drive the limiting pin 31 back to the locked position. One end of the pull cable 4 is fixedly connected to the folding frame 2, and the other end is directly connected to the limiting pin 31. When the folding frame 2 folds inward, it generates a traction force that pulls the pull cord 4. The pull cord 4 drives the limiting pin 31 to overcome the elastic force of the first limiting spring 32 and move along the preset trajectory of the first support member 11, disengaging from the engagement position with the second support member 12 and the third support member 13, thus releasing the lock. When the folding frame 2 unfolds, the traction force of the pull cord 4 disappears, and the elastic force of the first limiting spring 32 pushes the limiting pin 31 to reset, relocking the second support member 12 and the third support member 13.

[0026] Reference Figure 4 As shown, in one embodiment, the locking mechanism 3 further includes a first limiting component 33 and a second limiting component 34. The first limiting component 33 is mounted on the second support member 12, and the second limiting component 34 includes a limiting post 341 and a second limiting spring 342. The limiting post 341, in conjunction with the second limiting spring 342, is mounted on the third support member 13. When the folding frame 2 is pulled to the unlocked position by the pull cable 4 to move the limiting pin 31, and the second support member 12 is rotated and folded relative to the first support member 11, the first support member 11 drives the first limiting component 33 to move, causing it to press against and push the limiting post 341, thereby overcoming the elastic force of the second limiting spring 342 and causing the limiting post 341 to move, thus unlocking the third support member 13.

[0027] In this embodiment, the first limiting component 33 is fixedly installed at a preset position on the second support member 12 and rotates synchronously with the second support member 12. The second limiting component 34 includes a limiting post 341 and a second limiting spring 342. The limiting post 341 is installed in the limiting hole of the third support member 13 in cooperation with the second limiting spring 342. One end of the second limiting spring 342 abuts against the third support member 13 and the other end abuts against the limiting post 341. In its natural state, it pushes the limiting post 341 out to achieve the initial locking of the third support member 13. Specifically, the first limiting component 33 includes a chamfered limiting block and a flat-head screw. The first support member 11 is provided with protrusions for driving the first limiting component 33. In practical application, when the folding frame 2 is folded, the traction cable 4 drives the limiting pin 31 to move to the unlocked position against the force of the first limiting spring 32, thus releasing the lock on the second support member 12. Subsequently, the second support member 12 rotates and folds relative to the first support member 11, causing the first limiting component 33 to rotate synchronously, so that the protrusion of the first support member 11 is pressed into the cut edge limiting block for positioning. At the same time, the flat-head screw contacts and pushes against the limiting post 341, so that the limiting post 341 overcomes the elastic force of the second limiting spring 342 and moves to release the lock on the third support member 13. Finally, the second support member 12 and the third support member 13 can rotate and fold synchronously relative to the first support member 11. With the horizontal folding of the folding frame 2, the frame can be compactly stored in multiple dimensions. In addition, the support mechanism 1 also includes a decorative cover 101, a countersunk screw 102, a cover plate 103, a hardware washer 104, a spring washer 105, a hardware limiting washer 106, a plastic washer 107, and a first screw 108. The cover plate 103 is installed on the third support member 13 and is fixed by the countersunk screw 102. The decorative cover 101 covers the predetermined end of the third support member 13. The connection position between the third support member 13 and the second support member 12 is sequentially equipped with a plastic washer 107, a hardware limiting washer 106, a spring washer 105, and a hardware washer 104 and fixed by the first screw 108. The support mechanism 1 also includes a U-shaped member 109, which is fixed to the predetermined position of the first support member 11 by a second screw 110 to enhance the structural strength. Friction plates 111 and bushings 112 are also provided between the first support member 11, the second support member 12, and the third support member 13.

[0028] In one embodiment, the folding frame 2 includes two first movable rods 21 and two second movable rods 22. The ends of the two first movable rods 21 are hinged to form a first hinge point 210, and the ends of the two second movable rods 22 are hinged to form a second hinge point 220, with the second hinge point 220 located above the first hinge point 210. The two first movable rods 21 and the two second movable rods 22 are respectively arranged in a one-to-one cross configuration and hinged at the intersection. The ends of the two first movable rods 21 away from the first hinge point 210 are movably connected to the support mechanisms 1 at both ends; the ends of the two second movable rods 22 away from the second hinge point 220 are rotatably connected to the two support mechanisms 1.

[0029] In this embodiment, pressing the support mechanism 1 inward drives the folding frame 2 to retract. The two first movable rods 21 and the two second movable rods 22 rotate relative to each other around their respective hinge points. The first hinge point 210 and the second hinge point 220 move away from each other, and the folding frame 2 retracts horizontally as a whole. When the folding frame 2 retracts, it generates a stable traction force, which is transmitted to the limiting pin 31 through the pull cable 4. The traction limiting pin 31 moves and unlocks against the elastic force of the first limiting spring 32, releasing the lock on the second support member 12. Subsequently, the frame can be stored in multiple dimensions by rotating and folding the support mechanism 1.

[0030] In one embodiment, the first end of the pull wire 4 is connected to the limiting pin 31, and the second end of the pull wire 4 is fixed to the first mounting part 211 on the first movable rod 21 by a second fastener.

[0031] In this embodiment, the first end of the pull cable 4 is fixedly connected to the limiting pin 31, which can be achieved by threaded connection or snap-fit, ensuring that the traction force of the pull cable 4 can be directly transmitted to the limiting pin 31. The first movable rod 21 has a first mounting part 211 pre-set on it. This mounting part is a boss structure or a connecting seat with a threaded hole, which is adapted to the second fastener. The second end of the pull cable 4 is fixed to the first mounting part 211 by the second fastener. The second fastener is a screw or bolt, which ensures a firm connection and that the second end of the pull cable 4 is fixed without loosening or displacement. In actual application, pressing the support mechanism 1 inward causes the folding frame 2 to retract. The first movable rod 21 rotates around each hinge point, and the pull cable 4 moves synchronously through the first mounting part 211. The pull cable 4 pulls the limiting pin 31 to overcome the elastic force of the first limiting spring 32 and move to unlock, releasing the lock on the second support member 12. Subsequently, the support mechanism 1 can be rotated and folded to achieve multi-dimensional storage of the frame.

[0032] Reference Figure 2 As shown, in one possible embodiment, the first mounting part 211 is located on the first movable rod 21, and is adjacent to the cross hinge axis of the first movable rod 21 and the second movable rod 22, and is located above the cross hinge axis.

[0033] In this embodiment, the first mounting part 211 is located above the cross hinge axis and forms an adaptive angle with the laying path of the pull line 4 and the moving direction of the limiting pin 31, so as to ensure that when the folding frame 2 is retracted, the pulling force of the pull line 4 is transmitted axially along the limiting pin 31, and avoids force deviation.

[0034] In one embodiment, the pull wire 4 is threaded through the second movable rod 22, and its path is configured such that when the folding frame 2 is folded, the pull wire 4 is pulled by the first movable rod 21 to make it taut.

[0035] In this embodiment, a channel, such as a through hole, built-in groove, or guide hole, is pre-set on the second movable rod 22. The pull wire 4 passes through this channel, and the second movable rod 22 guides and constrains the pull wire 4. The path of the pull wire 4 is designed to adapt to the movement trajectory of the folding frame 2, ensuring that when the folding frame 2 is retracted and folded, the first movable rod 21 pulls the pull wire 4 through the first mounting part 211. The pull wire 4 moves along the channel of the second movable rod 22 and remains taut, without slack or deviation. The diameter of the hole or the width of the groove of the channel is adapted to the diameter of the pull wire 4, which ensures smooth movement of the pull wire 4, avoids excessive shaking, and reduces frictional wear between the pull wire 4 and the channel wall. In practical application, pressing the support mechanism 1 inward causes the folding frame 2 to retract. The first movable rod 21 rotates around each hinge point and pulls the pull line 4. The pull line 4 moves stably along the passage of the second movable rod 22 and remains taut. The tension force accurately transmits the traction force to the limit pin 31, which overcomes the elastic force of the first limit spring 32 and unlocks quickly. Subsequently, the support mechanism 1 can rotate and fold smoothly, achieving compact storage of the frame.

[0036] In one embodiment, a protective sleeve 5 is provided around the outer periphery of the section where the pull wire 4 passes through the second movable rod 22, and the two ends of the protective sleeve 5 are respectively fixed to the second movable rod 22.

[0037] In this embodiment, a protective sleeve 5 is fitted around the section of the pull wire 4 that passes through the second movable rod 22. The protective sleeve 5 is made of a wear-resistant, low-friction coefficient flexible material, such as nylon or polytetrafluoroethylene, and its length is adapted to the length of the section of the pull wire 4 that passes through the second movable rod 22. Both ends of the protective sleeve 5 are fixed to the through-channel ports of the second movable rod 22. The fixing method can be snap-fit, adhesive, or crimping to ensure that the protective sleeve 5 is relatively fixed to the second movable rod 22 and does not move with the pull wire 4. The inner diameter of the protective sleeve 5 is adapted to the diameter of the pull wire 4 to ensure that the pull wire 4 can slide smoothly within the protective sleeve 5 while avoiding excessive shaking; the outer diameter is adapted to the through-channel diameter of the second movable rod 22 to ensure that the protective sleeve 5 is securely embedded in the channel, forming a complete protective enclosure for the pull wire 4.

[0038] In one embodiment, the first end of the pull wire 4 passes through the wire hole provided on the limiting pin 31 and is fixed by the first fastener.

[0039] In this embodiment, a wire-passing hole is pre-set on the limiting pin 31. After the first end of the pull wire 4 passes through the wire-passing hole, it is fixed by the first fastener. The first fastener is a nut, a buckle, or a pressure block, which is compatible with the fixing connector at the end of the pull wire 4. During fixing, the first end of the pull wire 4 is first passed through the wire-passing hole. After adjusting the tension of the pull wire 4, it is locked by the first fastener to ensure that the pull wire 4 is firmly connected to the limiting pin 31 without relative slippage. At the same time, the tension of the pull wire 4 can be finely adjusted by adjusting the tightness of the fastener.

[0040] This disclosure also provides a walking aid, including the frame structure of any of the above-described embodiments.

[0041] In this embodiment, since the walking aid includes the frame structure described in any of the above embodiments, the linkage design of the pull cable 4 and the locking mechanism 3 eliminates the need for additional independent unlocking steps. Simply pulling the folding frame 2 synchronously triggers the lock release, achieving automation and synchronization of frame folding, reducing operation steps, and improving ease of use and folding efficiency. The support mechanism 1 can achieve vertical folding through the relative rotation of the first support member 11, the second support member 12, and the third support member 13. Combined with the horizontal folding of the folding frame 2, it forms a multi-dimensional folding effect, significantly reducing the storage volume compared to existing single-direction folding structures. Furthermore, this structure is simple, reliable, and easy to manufacture and maintain.

[0042] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0043] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," and "above" are used herein to describe the spatial positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that spatial relative terms include not only the orientation of the component as depicted in the figures but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0045] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in sequences other than those illustrated or described herein.

[0046] This disclosure has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this disclosure to the described embodiments. Furthermore, those skilled in the art will understand that this disclosure is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this disclosure, all of which fall within the scope of protection claimed by this disclosure. The scope of protection of this disclosure is defined by the appended claims and their equivalents.

Claims

1. A frame structure, comprising a support mechanism (1) and a folding frame (2), wherein the support mechanism (1) comprises a first support member (11), a second support member (12), and a third support member (13), the second support member (12) being rotatably connected to the first support member (11) and the third support member (13) respectively, and there are at least two support mechanisms (1); the folding frame (2) is arranged horizontally between the two support mechanisms (1), and the folding frame (2) is foldable or extendable so that the support mechanisms (1) at both ends of the folding frame (1) are close to or far apart from each other, characterized in that, Also includes: A locking mechanism (3) is disposed between the first support member (11), the second support member (12) and the third support member (13); A pull wire (4) is connected at one end to the folding frame (2) and at the other end to the locking mechanism (3). When the folding frame (2) is folded, the pull wire (4) is pulled to drive the locking mechanism (3) to move, so as to release the lock between the first support member (11), the second support member (12) and the third support member (13), so that the second support member (12) and the third support member (13) can rotate and fold relative to the first support member (11).

2. The frame structure according to claim 1, characterized in that, The locking mechanism (3) includes a limiting pin (31) and a first limiting spring (32). The limiting pin (31) is movably mounted on the first support member (11) via the first limiting spring (32); The first limiting spring (32) is used to provide the elastic force for the limiting pin (31) to remain or return to the locked position; The pull wire (4) is connected to the limiting pin (31) and is used to pull the limiting pin (31) to move against the force of the first limiting spring (32).

3. The frame structure according to claim 2, characterized in that, The locking mechanism (3) further includes a first limiting component (33) and a second limiting component (34). The first limiting component (33) is mounted on the second support member (12); The second limiting component (34) includes a limiting post (341) and a second limiting spring (342), wherein the limiting post (341) is installed on the third support member (13) in cooperation with the second limiting spring (342). When the folding frame (2) is pulled by the pull line (4) to move the limiting pin (31) to the unlocking position, and the second support member (12) is rotated and folded relative to the first support member (11), the first support member (11) drives the first limiting component (33) to move, so that it presses against and pushes the limiting post (341), thereby overcoming the elastic force of the second limiting spring (342) and moving the limiting post (341) to unlock the third support member (13).

4. The frame structure according to claim 2, characterized in that, The folding frame (2) includes two first movable rods (21) and two second movable rods (22); The ends of the two first movable rods (21) are hinged to form a first hinge point (210), and the ends of the two second movable rods (22) are hinged to form a second hinge point (220). The second hinge point (220) is located above the first hinge point (210). The two first movable rods (21) are respectively arranged in a cross-shaped manner corresponding to the two second movable rods (22), and are hinged at the intersection; The ends of the two first movable rods (21) away from the first hinge point (210) are respectively movably connected to the support mechanisms (1) at both ends; the ends of the two second movable rods (22) away from the second hinge point (220) are respectively rotatably connected to the two support mechanisms (1).

5. The frame structure according to claim 4, characterized in that, The first end of the pull wire (4) is connected to the limiting pin (31), and the second end of the pull wire (4) is fixed to the first mounting part (211) on the first movable rod (21) by the second fastener.

6. The frame structure according to claim 5, characterized in that, The first mounting part (211) is located on the first movable rod (21) and is adjacent to the cross hinge axis of the first movable rod (21) and the second movable rod (22), and is located above the cross hinge axis.

7. The frame structure according to claim 5, characterized in that, The pull wire (4) is threaded through the second movable rod (22), and its path is configured such that when the folding frame (2) is folded, the pull wire (4) is pulled by the first movable rod (21) to make it taut.

8. The frame structure according to claim 7, characterized in that, A protective sleeve (5) is provided around the section of the pull wire (4) that passes through the second movable rod (22), and the two ends of the protective sleeve (5) are respectively fixed to the second movable rod (22).

9. The frame structure according to claim 5, characterized in that, The first end of the pull wire (4) passes through the wire hole provided on the limiting pin (31) and is fixed by the first fastener.

10. A walking aid, characterized in that, Includes the frame structure described in any one of claims 1-9.

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