A folding assembly and walking aid

Abstract

The application discloses a folding assembly and a walking aid, the folding assembly comprising: a first connecting rod comprising a first main rod and a first auxiliary rod rotatably connected, the first main rod being rotatably connected with a first frame, and the first auxiliary rod being rotatably connected with a second frame; a second connecting rod comprising a second main rod and a second auxiliary rod rotatably connected, the second main rod being rotatably connected with the second frame, and the second auxiliary rod being rotatably connected with the first frame, the first connecting rod and the second connecting rod being cross-rotatably connected; a first locking member connected with the first main rod and the first auxiliary rod and used for locking the first main rod and the first auxiliary rod to control the first frame and the second frame to keep away from each other; and a second locking member connected with the first connecting rod and the second connecting rod and used for locking the first connecting rod and the second connecting rod to control the first frame and the second frame to keep close to each other. The first locking member and the second locking member do not interfere with each other during use, and the folding assembly is convenient to switch and lock in different forms.

Description

Technical Field

[0001] This application relates to the field of assistive walking technology, and in particular to a folding component and a walking aid. Background Technology

[0002] A walking aid is a mobile assistive device that provides walking support and stability assistance for people with limited mobility. It is widely used in rehabilitation training, elderly care, and short-distance travel. Common walking aids typically consist of a frame and training wheels. By providing users with upper limb support points and lateral stability, they reduce the balance burden during walking and provide necessary support and anti-lateral deviation assistance during starting, turning, and stopping.

[0003] To improve storage convenience in homes and public spaces and facilitate portability when out and about, existing technologies commonly incorporate folding functionality into walking aids. A typical approach involves installing rotating connectors and matching positioning structures between the front and rear arms or lateral supports of the frame. This allows the device to remain unfolded in a stable geometric shape during use, and to fold around a designated pivot point to reduce its size when not in use, thus achieving the goals of minimal space occupation, easy transport, and quick deployment.

[0004] Since walking aids serve the functions of weight transfer and gait stabilization, their structural reliability and rigidity during operation are crucial. While ensuring easy folding and deformation capabilities, providing clear limits, reliable positioning, and sufficient torsional and bending resistance in the unfolded state, and maintaining smooth, controllable, and accident-free operation during folding and unfolding transitions, are key technical challenges that need to be carefully considered and resolved in walking aid design. Utility Model Content

[0005] One objective of this application is to provide a folding component and a walking aid that aims to solve the technical problem of inconvenient form switching of walking aids in the prior art.

[0006] To achieve the above objectives, in a first aspect, this application provides a folding assembly for connecting a first frame and a second frame and controlling the first frame and the second frame to move closer together and further apart, comprising: a first connecting rod including a first main rod and a first secondary rod rotatably connected, the end of the first main rod away from the first secondary rod being rotatably connected to the first frame, and the end of the first secondary rod away from the first main rod being rotatably connected to the second frame; and a second connecting rod including a second main rod and a second secondary rod rotatably connected, the end of the second main rod away from the second secondary rod being rotatably connected to the second frame, and the end of the second secondary rod away from the second main rod being rotatably connected to the second frame. The first frame is rotatably connected, and the first connecting rod and the second connecting rod are rotatably connected in a cross manner; the first locking member is connected to the first main rod and the first auxiliary rod, and is used to lock the first main rod and the first auxiliary rod to control the first frame and the second frame to remain in a state of being far apart from each other when the first main rod rotates relative to the first auxiliary rod in a first direction to the maximum included angle; the second locking member is connected to the first connecting rod and the second connecting rod, and is used to lock the first connecting rod and the second connecting rod to control the first frame and the second frame to remain in a state of being close to each other when the first main rod rotates relative to the first auxiliary rod in a second direction to the minimum included angle.

[0007] The first connecting rod includes a first main rod and a first auxiliary rod that are rotatably connected. The second connecting rod includes a second main rod and a second auxiliary rod that are rotatably connected. The first connecting rod and the second connecting rod are rotatably connected and are also connected to the first frame and the second frame respectively. Locking any one of the above multiple rotatable connection points will cause the entire folding assembly to be locked, and the distance between the first frame and the second frame will be fixed.

[0008] The first locking member connects the first main rod and the first auxiliary rod. When the first main rod rotates relative to the first auxiliary rod in the first direction to the maximum included angle, the first locking member locks the first main rod and the first auxiliary rod, thereby controlling the first frame and the second frame to keep away from each other. The second locking member connects the first connecting rod and the second connecting rod. When the first main rod rotates relative to the first auxiliary rod in the second direction to the minimum included angle, the second locking member locks the first connecting rod and the second connecting rod, thereby controlling the first frame and the second frame to keep close to each other.

[0009] The first locking member and the second locking member of this application are disposed at different positions on the first connecting rod and the second connecting rod, and the two lock the relative shape of the folding assembly through different control logic, thereby controlling the relative distance between the first frame and the second frame. The first locking member and the second locking member do not interfere with each other during use, which facilitates the locking of the shape after the folding assembly switches to different shapes.

[0010] In conjunction with the first aspect, according to one embodiment of this application, the first locking member includes: a first locking hook, which is rotatably connected to a first main rod; and a first positioning pin, which is fixed to a first auxiliary rod. When the first main rod rotates relative to the first auxiliary rod in a first direction to the maximum included angle, the end of the first main rod near the second frame abuts against the second frame or a portion of the first auxiliary rod to restrict the first main rod from continuing to rotate relative to the first auxiliary rod in the first direction, and the first locking hook is rotatable to hook the first positioning pin to restrict the first main rod from rotating relative to the first auxiliary rod in a second direction.

[0011] In conjunction with the first aspect, according to one embodiment of this application, the first locking member further includes a first rotating pin, which is fixed to the first main rod, and the first locking hook is rotatably connected to the first main rod through the first rotating pin.

[0012] In conjunction with the first aspect, according to one embodiment of this application, the first connecting rod includes two first auxiliary rods, which are symmetrically arranged on both sides of the first main rod and partially clamp the first main rod. The two ends of the first positioning pin are respectively connected to the two first auxiliary rods.

[0013] In conjunction with the first aspect, according to one embodiment of this application, the first locking hook is provided with a sliding groove, and the first locking member further includes a sliding key, which is embedded in the sliding groove and fixedly connected to the first auxiliary rod. When the first locking hook rotates relative to the first main rod, the sliding key slides in the sliding groove.

[0014] In conjunction with the first aspect, according to one embodiment of this application, the first locking member further includes a first elastic member, which is connected to the first locking hook and the first auxiliary rod respectively, for driving the first locking hook to rotate toward the first positioning pin.

[0015] In conjunction with the first aspect, according to one embodiment of this application, the second locking member includes: a second locking hook, which is rotatably connected to a second connecting rod; and a second positioning pin, which is fixed to the first main rod. When the first main rod rotates relative to the first auxiliary rod in a second direction to the minimum included angle, the second locking hook can rotate to hook the second positioning pin to restrict the first main rod from rotating relative to the first auxiliary rod in a first direction.

[0016] In conjunction with the first aspect, according to one embodiment of this application, the second locking member further includes a second elastic member, which is connected to the second locking hook and the second connecting rod respectively, for driving the second locking hook to rotate toward the second positioning pin; and / or the second locking member further includes a second rotating pin, which is fixed to the second connecting rod, and the second locking hook is rotatably connected to the second connecting rod through the second rotating pin.

[0017] Secondly, this application also provides a walking aid, including: a folding assembly according to any of the above embodiments; a first frame and a second frame, connected by the folding assembly.

[0018] In conjunction with the second aspect, according to one embodiment of this application, both the first frame and the second frame include: a front arm with a first limiting groove and a second limiting groove; a rear arm rotatably connected to the front arm, used to adjust the angle between the rear arm and the front arm by rotating relative to the front arm, so that the frame can switch between an unfolded state and a folded state; and a locking member slidably disposed on the rear arm, the sliding direction of which is perpendicular to the rotation axis of the rear arm, the locking member being used to slide into the first limiting groove when the rear arm rotates to the unfolded state and to slide into the second limiting groove when the rear arm rotates to the folded state, so that the rear arm stops rotating and remains in the unfolded / folded state.

[0019] The beneficial effects of the second aspect described above can be referred to in the first aspect or any possible implementation of the first aspect, and will not be elaborated here. Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations.

[0020] Other advantages, objectives and features of this application will be partly apparent from the description below, and partly understood by those skilled in the art through study and practice of this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is one of the overall structural schematic diagrams of the walking aid provided in the embodiments of this application in the unfolded state; Figure 2 This is the second schematic diagram of the overall structure of the walking aid provided in the embodiment of this application in the unfolded state; Figure 3 This is the third schematic diagram of the overall structure of the walking aid provided in the embodiment of this application in the unfolded state; Figure 4 This is a schematic diagram of the overall structure of the walking aid provided in the embodiment of this application in the folded state; Figure 5 This is a cross-sectional structural diagram of the walking aid provided in the embodiment of this application in the unfolded state; Figure 6 yes Figure 5 A magnified view of a portion of region A in the middle; Figure 7 This is a cross-sectional structural diagram of the walking aid provided in the embodiment of this application in a folded state; Figure 8 yes Figure 7 A magnified view of a portion of region B in the middle.

[0023] Explanation of icon numbers: 10. First connecting rod; 11. First main rod; 12. First auxiliary rod; 20. Second connecting rod; 21. Second main rod; 22. Second auxiliary rod; 30. First locking element; 31. First locking hook; 32. First positioning pin; 33. First rotating pin; 34. Slide groove; 35. Slide key; 36. First elastic element; 40. Second locking element; 41. Second locking hook; 42. Second positioning pin; 43. Second rotating pin; 44. Second elastic element; 51. First frame; 52. Second frame; 53. Front arm; 531. First limiting groove; 532. Second limiting groove; 54. Rear arm; 55. Third locking element; 56. Third connecting rod. Detailed Implementation

[0024] The technical solutions of the embodiments of this application 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 application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] To address the technical issue of inconvenient folding / unfolding operation in existing walking aids, please refer to... Figures 1 to 8 As shown, in a first aspect, this application provides a folding assembly for connecting a first frame 51 and a second frame 52 and controlling the first frame 51 and the second frame 52 to move closer and further apart, including: The first connecting rod 10 includes a first main rod 11 and a first auxiliary rod 12 that are rotatably connected. The end of the first main rod 11 away from the first auxiliary rod 12 is rotatably connected to the first frame 51, and the end of the first auxiliary rod 12 away from the first main rod 11 is rotatably connected to the second frame 52. The second connecting rod 20 includes a second main rod 21 and a second auxiliary rod 22 that are rotatably connected. The end of the second main rod 21 away from the second auxiliary rod 22 is rotatably connected to the second frame 52, and the end of the second auxiliary rod 22 away from the second main rod 21 is rotatably connected to the first frame 51. The first connecting rod 10 and the second connecting rod 20 are rotatably connected in a cross manner. The first locking member 30 is connected to the first main rod 11 and the first auxiliary rod 12, and is used to lock the first main rod 11 and the first auxiliary rod 12 when the first main rod 11 rotates relative to the first auxiliary rod 12 in the first direction to the maximum included angle, so as to control the first frame 51 and the second frame 52 to remain in a state of being far apart from each other. The second locking member 40 is connected to the first connecting rod 10 and the second connecting rod 20. When the first main rod 11 rotates relative to the first auxiliary rod 12 in the second direction to the minimum included angle, it locks the first connecting rod 10 and the second connecting rod 20 to control the first frame 51 and the second frame 52 to remain close to each other.

[0026] The first connecting rod 10 includes a first main rod 11 and a first auxiliary rod 12 that are rotatably connected. The second connecting rod 20 includes a second main rod 21 and a second auxiliary rod 22 that are rotatably connected. The first connecting rod 10 and the second connecting rod 20 are rotatably connected and are also connected to the first frame 51 and the second frame 52 respectively. Locking any one of the above multiple rotatable connection points will cause the entire folding assembly to be locked, and the distance between the first frame 51 and the second frame 52 will be fixed.

[0027] The first locking member 30 connects the first main rod 11 and the first auxiliary rod 12. When the first main rod 11 rotates relative to the first auxiliary rod 12 in a first direction to the maximum included angle, the first locking member 30 locks the first main rod 11 and the first auxiliary rod 12, thereby controlling the first frame 51 and the second frame 52 to remain far apart from each other. The second locking member 40 connects the first connecting rod 10 and the second connecting rod 20. When the first main rod 11 rotates relative to the first auxiliary rod 12 in a second direction to the minimum included angle, the second locking member 40 locks the first connecting rod 10 and the second connecting rod 20, thereby controlling the first frame 51 and the second frame 52 to remain close to each other. For ease of description, the state of the folding assembly when the first frame 51 and the second frame 52 are far apart from each other is defined as the unfolded state, and the state of the folding assembly when the first frame 51 and the second frame 52 are close to each other is defined as the folded state.

[0028] The first locking member 30 and the second locking member 40 of this application are disposed at different positions of the first connecting rod 10 and the second connecting rod 20, and the two lock the relative shape of the folding assembly through different control logic, thereby controlling the relative distance between the first frame 51 and the second frame 52. The first locking member 30 and the second locking member 40 do not interfere with each other during use, which facilitates the locking of the shape after the folding assembly switches to different shapes.

[0029] It should be understood that the first connecting rod 10 and the second connecting rod 20 are rotatably connected in this application. Any part of the first connecting rod 10 and any part of the second connecting rod 20 can be rotatably connected. The first main rod 11 and the second main rod 21 shown in the figure are only preferred examples and do not represent a limitation on the scope of protection of this application.

[0030] For example, the folding assembly also includes two third connecting rods 56, one of which is fixedly and vertically connected to the end of the first main rod 11 away from the first secondary rod 12, and is rotatably connected to the first frame 51; the other third connecting rod 56 is fixedly and vertically connected to the end of the second main rod 21 away from the second secondary rod 22, and is rotatably connected to the second frame 52.

[0031] The length of the third connecting rod 56 is exemplarily 140mm, used to stabilize the rotation of the first main rod 11 relative to the first frame 51 and the second auxiliary rod 22 relative to the second frame 52.

[0032] In conjunction with the first aspect, according to one embodiment of this application, the first locking member 30 includes: a first locking hook 31, which is rotatably connected to the first main rod 11; and a first positioning pin 32, which is fixed to the first auxiliary rod 12. When the first main rod 11 rotates relative to the first auxiliary rod 12 in a first direction to the maximum included angle, the end of the first main rod 11 near the second frame 52 abuts against the second frame 52 or the first auxiliary rod 12 to restrict the first main rod 11 from continuing to rotate relative to the first auxiliary rod 12 in the first direction, and the first locking hook 31 can rotate to hook the first positioning pin 32 to restrict the first main rod 11 from rotating relative to the first auxiliary rod 12 in a second direction.

[0033] When the first main rod 11 rotates relative to the first auxiliary rod 12 to its maximum angle in the first direction, the end of the first main rod 11 near the second frame 52 abuts against the second frame 52 or part of the first auxiliary rod 12. That is, when the folding assembly switches from the folded state to the unfolded state, it is only necessary to rotate the first main rod 11 relative to the first auxiliary rod 12 as far as possible in the first direction until abutting occurs. After the first main rod 11 is rotated into position, it will be restricted by the geometric interference of the folding assembly's own structure, making it easy for the operator to position it during state switching. After the folding assembly switches from the folded state to the unfolded state, rotating the locking hook to engage the first positioning pin 32 can restrict the rotation of the first main rod 11 relative to the first auxiliary rod 12 in the second direction. Combined with the abutting action that restricts the rotation of the first main rod 11 relative to the first auxiliary rod 12 in the first direction, the state of the folding assembly can be locked, thereby preventing the first frame 51 and the second frame 52 from moving away from each other.

[0034] Specifically, the first locking component 30 also includes a first rotating pin 33, which is fixed to the first main rod 11. The first locking hook 31 is rotatably connected to the first main rod 11 via the first rotating pin 33. The first locking hook 31 is rotatably connected to the first main rod 11 via the first rotating pin 33, making the rotation process of the first locking hook 31 more stable when hooking the first positioning pin 32.

[0035] In conjunction with the first aspect, according to one embodiment of this application, the first connecting rod 10 includes two first auxiliary rods 12, which are symmetrically arranged on both sides of the first main rod 11 and partially clamp the first main rod 11. The two ends of the first positioning pin 32 are respectively connected to the two first auxiliary rods 12.

[0036] Two first auxiliary rods 12 are symmetrically arranged on both sides of the main rod. The two ends of the first positioning pin 32 are respectively connected to the two first auxiliary rods 12. When the first locking hook 31 hooks the first positioning pin 32, the two ends of the first positioning pin 32 are simultaneously subjected to force, which avoids the cumulative deformation of the first connecting rod 10 due to the offset and ensures that the folding assembly can still maintain good structural stability after long-term operation.

[0037] In conjunction with the first aspect, according to one embodiment of this application, the first locking hook 31 is provided with a sliding groove 34, and the first locking member 30 further includes a sliding key 35, which is embedded in the sliding groove 34 and fixedly connected to the first auxiliary rod 12. When the first locking hook 31 rotates relative to the first main rod 11, the sliding key 35 slides in the sliding groove 34.

[0038] In this embodiment, the slide key 35 is embedded in the slide groove 34. When the first locking hook 31 rotates relative to the first main rod 11, the slide key 35 slides in the slide groove 34 to limit the movement path of the first locking hook 31, thereby making the rotation of the first locking hook 31 smoother.

[0039] In conjunction with the first aspect, according to one embodiment of this application, the first locking member 30 further includes a first elastic member 36, which is connected to the first locking hook 31 and the first auxiliary rod 12 respectively, for driving the first locking hook 31 to rotate toward the first positioning pin 32.

[0040] In this embodiment, the first elastic element 36 applies a force to the first locking hook 31, causing it to rotate toward the first positioning pin 32. On one hand, when the folding assembly is in the unfolded state, the first locking hook 31 maintains a tendency to rotate toward the first positioning pin 32, increasing the structural stability of the first locking element 30 when the folding assembly is in the unfolded state and reducing the risk of instability and deformation during operation. On the other hand, when the folding assembly needs to switch from the folded state to the unfolded state, since the first elastic element 36 continuously applies a force to the first locking hook 31, causing it to rotate toward the first positioning pin 32, the user only needs to rotate the first main rod 11 while moving the first locking hook 31. After the first main rod 11 is rotated to the correct position, the user can release the user's hand, and the first locking hook 31 will automatically rotate and hook onto the first positioning pin 32 under the action of the first elastic element 36 to achieve state locking, making the unfolding of the folding assembly more convenient.

[0041] In conjunction with the first aspect, according to one embodiment of this application, the second locking member 40 includes: a second locking hook 41, which is rotatably connected to the second connecting rod 20; and a second positioning pin 42, which is fixed to the first main rod 11. When the first main rod 11 rotates relative to the first auxiliary rod 12 in a second direction to the minimum included angle, the second locking hook 41 can rotate to hook the second positioning pin 42 to restrict the first main rod 11 from rotating relative to the first auxiliary rod 12 in a first direction.

[0042] This embodiment provides a specific implementation structure of the second locking member 40. Through the hook-and-loop engagement between the second locking hook 41, which is rotatably connected to the second connecting rod 20, and the second positioning pin 42, which is fixed to the first main rod 11, the relative rotation of the first main rod 11 and the second main rod 21 is restricted. The rotation of the first main rod 11 relative to the first auxiliary rod 12 in the second direction has reached its minimum angle, while the rotation of the first main rod 11 relative to the first auxiliary rod 12 in the first direction is restricted by the second locking member 40, thereby limiting the first frame 51 and the second frame 52 from approaching each other.

[0043] Specifically, the second locking member 40 also includes a second rotating pin 43, which is fixed to the second connecting rod 20. The second locking hook 41 is rotatably connected to the second connecting rod 20 through the second rotating pin 43, and the rotation process of the second locking hook 41 when hooking the second positioning pin 42 is more stable.

[0044] In conjunction with the first aspect, according to one embodiment of this application, the second locking member 40 further includes a second elastic member 44, which is connected to the second locking hook 41 and the second connecting rod 20 respectively, for driving the second locking hook 41 to rotate toward the second positioning pin 42.

[0045] In this embodiment, the second elastic element 44 applies a force to the second locking hook 41 that rotates toward the second positioning pin 42. On the one hand, when the folding assembly is in the folded state, the second locking hook 41 maintains a tendency to rotate toward the second positioning pin 42, increasing the structural stability of the second locking element 40 when the folding assembly is in the folded state and reducing the risk of instability and deformation of the folding assembly during storage. On the other hand, when the folding assembly needs to switch from the unfolded state to the folded state, since the second elastic element 44 continuously applies a force to the second locking hook 41 that rotates toward the second positioning pin 42, the user only needs to move the second locking hook 41 while rotating the first main rod 11, and release the hand after the second main rod 21 is rotated into place. The second locking hook 41 automatically rotates and hooks the second positioning pin 42 under the action of the second elastic element 44 to achieve state locking, making the folding of the folding assembly more convenient.

[0046] Secondly, this application also provides a walking aid, including: a folding assembly as described above; a first frame 51 and a second frame 52, connected by the folding assembly.

[0047] The beneficial effects of the second aspect described above can be referred to in the first aspect or any possible implementation of the first aspect, and will not be elaborated here. Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations.

[0048] In conjunction with the second aspect, according to one embodiment of this application, both the first frame 51 and the second frame 52 include: The forearm 53 has a first limiting groove 531 and a second limiting groove 532. The rear arm 54 is rotatably connected to the forearm 53 and is used to adjust the angle with the forearm 53 by rotating relative to the forearm 53, and to switch between the unfolded state and the folded state. The third locking member 55 is slidably disposed on the rear arm 54, and its sliding direction is perpendicular to the rotation axis of the rear arm 54. The third locking member 55 is used to slide into the first limiting groove 531 when the rear arm 54 is rotated to the unfolded state and to slide into the second limiting groove 532 when the rear arm 54 is rotated to the folded state, so that the rear arm 54 stops rotating and remains in the unfolded / folded state.

[0049] In this application, the rear arm 54 switches between an unfolded state and a folded state by rotating relative to the forearm 53. When the rear arm 54 rotates to the unfolded state, the third locking member 55 slides and engages in the first limiting groove 531. When the rear arm 54 rotates to the folded state, the third locking member 55 slides and engages in the second limiting groove 532, thereby stopping the rear arm 54 from rotating and maintaining the unfolded / folded state. The sliding engagement between the third locking member 55 and the rear arm 54 can take various forms, such as having a groove on the rear arm 54 into which the third locking member 55 is embedded, or having the third locking member 55 sleeved on the rear arm 54, etc.

[0050] This application achieves locking of the first frame 51 and the second frame 52 by having the third locking member 55 engage with the first limiting groove 531 and the second limiting groove 532 respectively when the rear arm 54 rotates to different states. The structure is simple and easy to operate. When the third locking member 55 is engaged in the first limiting groove 531 and the second limiting groove 532, the rotational tendency of the rear arm 54 relative to the front arm 53 will also increase the force between the third locking member 55 and the groove walls of the first limiting groove 531 and the second limiting groove 532, making it difficult for the third locking member 55 to slide out due to friction. The structure of the first frame 51 and the second frame 52 is stable and reliable in both the locked and deployed states.

[0051] When the rear arm 54 is in the extended state, the angle between the rear arm 54 and the forearm 53 is the first angle; when the rear arm 54 is in the folded state, the angle between the rear arm 54 and the forearm 53 is the second angle. As can be imagined, the second angle is smaller than the first angle.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0053] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0054] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0055] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the design concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A folding assembly for connecting a first frame and a second frame and controlling the first frame and the second frame to move closer and further apart, characterized in that, include: The first connecting rod includes a first main rod and a first auxiliary rod that are rotatably connected. The end of the first main rod away from the first auxiliary rod is rotatably connected to the first vehicle frame, and the end of the first auxiliary rod away from the first main rod is rotatably connected to the second vehicle frame. The second connecting rod includes a second main rod and a second auxiliary rod that are rotatably connected. The end of the second main rod away from the second auxiliary rod is rotatably connected to the second frame, and the end of the second auxiliary rod away from the second main rod is rotatably connected to the first frame. The first connecting rod and the second connecting rod are rotatably connected in a cross manner. The first locking member is connected to the first main rod and the first auxiliary rod, and is used to lock the first main rod and the first auxiliary rod when the first main rod rotates relative to the first auxiliary rod in the first direction to the maximum included angle so as to control the first frame and the second frame to keep them in a state of being far apart from each other. The second locking element, connected to the first connecting rod and the second connecting rod, is used to lock the first connecting rod and the second connecting rod when the first main rod rotates relative to the first auxiliary rod in the second direction to the minimum included angle, so as to control the first frame and the second frame to keep close to each other.

2. The folding assembly according to claim 1, characterized in that, The first locking element includes: A first locking hook is rotatably connected to the first main rod; The first locating pin is fixed to the first auxiliary rod; When the first main rod rotates to its maximum angle relative to the first secondary rod in the first direction, the end of the first main rod near the second frame abuts against the second frame or the first secondary rod to restrict the first main rod from continuing to rotate in the first direction relative to the first secondary rod, and the first locking hook can rotate to hook the first positioning pin to restrict the first main rod from rotating in the second direction relative to the first secondary rod.

3. The folding assembly according to claim 2, characterized in that, The first locking component further includes a first rotating pin, which is fixed to the first main rod, and the first locking hook is rotatably connected to the first main rod through the first rotating pin.

4. The folding assembly according to claim 2, characterized in that, The first connecting rod includes two first auxiliary rods, which are symmetrically arranged on both sides of the first main rod and partially clamp the first main rod. The two ends of the first positioning pin are respectively connected to the two first auxiliary rods.

5. The folding assembly according to claim 2, characterized in that, The first locking hook has a sliding groove, and the first locking member further includes: A sliding key is embedded in the sliding groove and fixedly connected to the first auxiliary rod. When the first locking hook rotates relative to the first main rod, the sliding key slides in the sliding groove.

6. The folding assembly according to claim 4, characterized in that, The first locking member further includes a first elastic member, which is connected to the first locking hook and the first auxiliary rod respectively, and is used to drive the first locking hook to rotate toward the first positioning pin.

7. The folding assembly according to any one of claims 1-6, characterized in that, The second locking element includes: The second locking hook is rotatably connected to the second connecting rod; The second positioning pin is fixed to the first main rod. When the first main rod rotates relative to the first auxiliary rod in the second direction to the minimum included angle, the second locking hook can rotate to hook the second positioning pin to restrict the first main rod from rotating relative to the first auxiliary rod in the first direction.

8. The folding assembly according to claim 7, characterized in that, The second locking member further includes a second elastic member, which is connected to the second locking hook and the second connecting rod respectively, for driving the second locking hook to rotate toward the second locating pin; and / or The second locking component further includes a second rotating pin, which is fixed to the second connecting rod, and the second locking hook is rotatably connected to the second connecting rod via the second rotating pin.

9. A walking aid, characterized in that, include: The folding assembly according to any one of claims 1-8; The first frame and the second frame are connected by the folding assembly.

10. The walking aid according to claim 9, characterized in that, Both the first frame and the second frame include: The forearm has a first limiting groove and a second limiting groove; The rear arm is rotatably connected to the forearm and is used to adjust the angle with the forearm by rotating relative to the forearm, and to switch between an unfolded state and a folded state. A third locking member is slidably disposed on the rear arm, and its sliding direction is perpendicular to the rotation axis of the rear arm. The third locking member is used to slide into the first limiting groove when the rear arm rotates to the unfolded state and to slide into the second limiting groove when the rear arm rotates to the folded state, so as to stop the rear arm from rotating and maintain the unfolded / folded state.

Images