Locking switch and foldable walking aid device

Abstract

The utility model discloses a locking switch and a foldable walking aid device. The locking switch is applied to at least two connecting rods which are linked with each other. The locking switch comprises a buckling piece and a clamping piece which are connected in a matched mode. The buckling piece comprises a shell, a rotating shaft, an elastic piece and a buckle; the shell is used for being connected with the two connecting rods. The rotating shaft is fixed in the shell, and the elastic piece and the buckle are arranged on the rotating shaft in a sleeving mode. When the buckling piece moves along with the connecting rod and abuts against the clamping piece, the buckle rotates along the rotating shaft and is buckled with the clamping piece. Therefore, a user can easily realize locking and unlocking of the mutually linked connecting rods in a labor-saving manner.

Description

Technical Field

[0001] This application belongs to the field of assistive walking equipment technology, specifically relating to a locking switch and a foldable walking aid device. Background Technology

[0002] With the increasing aging of the population, the market demand for walking aids or walkers, as important tools to assist people with mobility impairments, is growing. While existing foldable walking aids or walkers offer convenience to some extent, they still have some shortcomings in practical use. In particular, the locking mechanism of these devices generally requires the user to manually operate the locking mechanism to secure the device after unfolding the walking aid to a certain angle. This operation method is not only laborious but also inefficient, making it very inconvenient for users with weaker physical strength. Utility Model Content

[0003] In view of the above problems, the purpose of this application is to provide a locking switch and a foldable walking aid device, so that users can easily lock and unlock the walking aid frame or other interconnected connecting rods.

[0004] According to one aspect of the embodiments of this application, a locking switch is provided, which is applied to at least two interconnected connecting rods. The locking switch includes a fastening member and a locking member that are mated together; the fastening member includes: a housing, a rotating shaft, an elastic member, and a latch; the housing is used to connect to the two connecting rods respectively; the rotating shaft is fixed inside the housing, and the elastic member and the latch are sleeved on the rotating shaft; when the fastening member moves with the connecting rod and abuts against the locking member, the latch rotates along the rotating shaft and engages with the locking member.

[0005] Optionally, the fastener includes a first part located inside the housing and a second part extending outside the housing for connection with the snap-fit ​​element.

[0006] Optionally, the second part includes a guide section and an opening, with the snap-fit ​​component being a guide rod;

[0007] The guide part is used to abut against the guide rod to push the fastener to move, so that the opening engages with the guide rod.

[0008] Optionally, the second part also includes an unlocking part, which is used to receive external force to separate the second part from the snap-fit.

[0009] Optionally, the first part also includes an abutting part, which is used to abut against the inner wall of the housing under the action of the elastic element to limit the rotation range of the latch.

[0010] This application also provides a foldable walking aid device, including any of the above-mentioned locking switches and a plurality of interconnectable connecting rods; the locking switch is disposed on at least one connecting rod, and the locking switch is used to: allow the connecting rods to move relative to each other when the walking aid device is folded; and restrict the rotation of the connecting rods when the walking aid device is in use.

[0011] Optionally, the multiple connecting rods include main rods arranged opposite each other, main rod connectors connecting the two main rods, and side rods extending along both sides of the main rods; each main rod is fitted with a sliding seat and a limiting member; the main rod connectors and side rods are connected to the main rods through the sliding seats; a fastening member is provided on the sliding seat, and a snap-fit ​​member is provided on the limiting member; when the walking aid is in use, the sliding seat moves toward the limiting member, driving the main rod connectors and side rods connected to the sliding seat to move until the fastening member and the snap-fit ​​member engage and connect.

[0012] Optionally, the sliding seat is integrally formed with the housing, and the sliding seat includes a first receiving groove, a second receiving groove and a third receiving groove; the first receiving groove is connected to the main rod connector, the second receiving groove is connected to the side rod, and the third receiving groove is connected to the rotating shaft.

[0013] Optionally, the third receiving compartment includes a partition for separating the space of the third receiving compartment.

[0014] Optionally, the foldable walking aid also includes a foldable seat, which is located between the two main poles and has its two ends positioned above the sliding seat; a lifting element is provided on the side of the seat facing away from the sliding seat, and a pull rope is provided on the side of the seat facing the sliding seat; the second part also includes an unlocking part; one end of the pull rope is connected to the lifting element, and the other end is connected to the unlocking part.

[0015] The beneficial effects of this application are as follows: Through the cooperation of the fastening element and the locking element, rapid locking and unlocking of at least two connecting rods is achieved. The housing of the fastening element is connected to two interconnected connecting rods, allowing the fastening element to convert its gravitational potential energy into kinetic energy as the connecting rods move downwards. This kinetic energy gives the fastening element a certain speed and force when it contacts the locking element, resulting in smoother engagement and reducing the additional force required by the user. After engagement, the latch moves laterally, tightly engaging with the locking element to lock the connecting rods. This simplifies the user's operation process, significantly reduces the physical effort required for locking, and provides users with an efficient and reliable locking and unlocking method, making it more suitable for devices with interconnected connecting elements that are frequently folded or unfolded. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the locking mechanism and connecting rod provided in one embodiment of this application;

[0018] Figure 2 An exploded view of the locking mechanism provided in one embodiment of this application;

[0019] Figure 3 A schematic diagram of the latch structure of a locking mechanism provided in an embodiment of this application.

[0020] Figure 4 A schematic diagram of the unfolded state of a foldable walking aid device provided in an embodiment of this application;

[0021] Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle;

[0022] Figure 6 for Figure 4 A schematic diagram of the foldable walking aid device in its folded state;

[0023] Figure 7 This is a schematic diagram of the structure of a sliding seat provided in an embodiment of this application;

[0024] Figure 8 A schematic diagram of the structure of a foldable walking aid provided in another embodiment of this application;

[0025] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0026] The reference numerals in the detailed embodiments are as follows:

[0027] 100. Locking switch; 110. Fastening element; 111. Housing; 112. Rotating shaft; 113. Elastic element; 114. Snap-fit; 114-1. First part; 114-2. Second part; 115. Guide part; 116. Opening; 117. Unlocking part; 118. Abutting part; 120. Snap-fit ​​element; 121. Guide rod; 130. Connecting rod;

[0028] 200. Foldable walking aid; 210. Main pole; 220. Main pole connecting rod; 230. Side pole; 240. Sliding seat; 241. First receiving slot; 242. Second receiving slot; 243. Third receiving slot; 244. Partition; 250. Limiting component; 260. Seat cushion; 261. Lifting component; 262. Pull rope; 270. Roller. Detailed Implementation

[0029] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0034] It should also be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0036] Interlocking connecting rods can exhibit various movements, including swinging, rotating, moving up and down, or moving left and right. The purpose of the locking switch is to fix the connecting rods after they have completed their relative movements, preventing unexpected movement or loosening and ensuring the stability of the walking aid and the safety of the user. Typically, the locking mechanism consists of a fastener and a latch on each of the two connecting rods. When rotated or moved into position, the fastener and latch engage to lock the rods. This design requires the user to operate the fasteners and latches on each connecting rod separately, and to ensure that the components on both rods move correctly into position when they move relative to each other. If they cannot move into position, it may require a certain amount of skill and force, or additional pressure, to ensure that the fasteners and latches engage correctly, which may be difficult for elderly or mobility-impaired users.

[0037] In view of this, this application provides a locking switch 100, please refer to... Figures 1 to 3 The locking switch 100 includes a fastening member 110 and a locking member 120 that are mated together and are applied to at least two interconnected connecting rods 130. The fastening member 110 includes: a housing 111 for connecting to the connecting rods 130 therein, a rotating shaft 112, an elastic member 113, and a latch 114; both ends of the rotating shaft 112 are connected to the housing 111, and the elastic member 113 and the latch 114 are sleeved on the rotating shaft 112; the latch 114 moves with the connecting rod 130 and abuts against the locking member 120, and rotates relative to the rotating shaft 112 to engage or disengage with the locking member 120.

[0038] The housing 111 of the fastener 110 is connected to two connecting rods 130 and can move relative to one connecting rod 130 as one of the connecting rods 130 moves. The fastener 110 and the snap-fit ​​120 are located on the same connecting rod 130. The user only needs to operate one connecting rod 130, and the fastener 110 and the snap-fit ​​120 will automatically align and lock as the connecting rod 130 moves, which greatly simplifies the operation process.

[0039] Furthermore, considering that in applications such as foldable seats and walking aids, the connecting rod 130 needs to be locked when unfolded, a certain amount of pressure needs to be applied to move the connecting rod 130 downwards when unfolding these devices. To simplify this process and reduce the force required by the user, the locking switch 100 of this application, during the unfolding process, has the fastening member 110 moving downwards along with one of the connecting rods 130, and naturally falling down under the action of gravity to abut and engage with the latching member 120, achieving automatic locking without the need for additional pressure, making the operation more effortless and natural.

[0040] Furthermore, the direction in which the fastener moves downward with the connecting rod differs from the direction of the lateral movement of the latch. This design makes force transmission more direct and efficient. Since the lateral movement of the latch is triggered by the contact between the fastener and the locking element, this design optimizes the use of force, allowing the force applied by the user to be more effectively converted into locking or unlocking actions, reducing force loss during transmission.

[0041] The housing 111 of the fastener 110 is connected to the connecting rod 130. A rotating shaft 112 is located inside the fastener 110, with both ends of the shaft fixed inside the housing 111. The latch 114 of the fastener 110 includes a first part 114-1 and a second part 114-2: the first part 114-1 is suspended on the rotating shaft 112 and can rotate freely on it; the second part 114-2 extends downwards, protruding outside the housing 111. This design effectively restricts the movement range of the first part 114-1 when the latch 114 rotates relative to the rotating shaft 112, ensuring the stability and accuracy of the latch 114 during operation.

[0042] The second part 114-2 engages with the latching member 120 to achieve locking or unlocking. When locking is required, the second part 114-2 contacts the latching member 120, and through the compression of the entire latch 114 and the resetting action of the elastic member 113, a secure engagement with the latching member 120 is achieved. When unlocking, external force is applied to the second part 114-2, causing the latch 114 to overcome the resistance of the elastic member 113, thereby separating from the latching member 120 and unlocking.

[0043] The locking switch 100 automatically aligns and locks when the connecting rod 130 is unfolded, utilizing gravity to assist the locking action, thereby reducing operational difficulty and improving locking reliability. This design is particularly suitable for mobility aids that require frequent folding and unfolding, providing users with a more convenient and safer operating experience. Furthermore, the housing 111's restraining effect on the first part 114-1 of the latch 114 further enhances the reliability of the locking switch 100, preventing accidental unlocking or damage, thus improving the safety and durability of the mobility aid.

[0044] Continue as Figures 1 to 3 As shown, the second part 114-2 includes a guide part 115 and an opening 116. The snap-fit ​​member 120 is a guide rod 121. The guide part 115 is used to abut against the guide rod 121 to push the snap-fit ​​114 to move, so that the opening 116 engages with the guide rod 121.

[0045] The main function of the guide part 115 is to contact and abut against the guide rod 121 during operation. When the guide part 115 contacts the guide rod 121, it drives the latch 114 to move by transmitting a pushing force. This movement allows the opening 116 on the latch 114 to be accurately aligned with the guide rod 121 and engage, thereby completing the locking action.

[0046] Compared to the traditional latch 114 which locks by using a hook and slot or protrusion, the locking switch 100 of this application provides additional stability for locking through the opening 116 and guide rod 121. Since the walking frame or seat needs to bear weight to support the user, the cooperation between the opening 116 and guide rod 121 can better maintain the locked state when subjected to impact or vibration, and is not easily loosened by external forces.

[0047] Further, continue to refer to Figure 1 and Figure 3 The second part 114-2 also includes an unlocking part 117, which is used to receive external force to separate the second part 114-2 from the latching member 120. The first part 114-1 also includes an abutting part 118, which is used to abut against the inner wall of the housing 111 under the action of the elastic member 113 to limit the rotation range of the latch 114.

[0048] The unlocking part 117 is designed to provide a simple unlocking mechanism, allowing the user to easily separate the second part 114-2 of the buckle 114 from the latching member 120 by applying external force, facilitating frequent folding and unfolding of the walking aid. The abutment part 118 works in conjunction with the elastic member 113 to abut against the inner wall of the housing 111 under the action of the elastic member 113, thereby limiting the rotation range of the buckle 114.

[0049] The elastic element 113 is not only responsible for providing the restoring force to ensure that the latch 114 can automatically return to the initial position after locking or unlocking, but also for precisely controlling the range of movement of the latch 114 through cooperation with the abutment part 118.

[0050] The abutment portion 118 also ensures the precise alignment of the guide portion 115 and the opening 116 of the latch 114 when interacting with the latching member 120. Under the constraint of the abutment portion 118, the guide portion 115 can rotate smoothly and push the entire latch 114 to move when it contacts the latching member 120, thereby achieving effective engagement between the latch 114 and the latching member 120. This avoids situations where the latch 114 needs to be pushed with more force or fails to engage due to improper positioning, ensuring the smoothness and reliability of the locking process.

[0051] This application also provides a foldable walking aid 200, such as Figure 4 As shown, the foldable walking aid 200 includes any of the aforementioned locking switches 100. The foldable walking aid 200 includes a plurality of interconnected connecting rods 130. A locking switch 100 is disposed on at least one connecting rod 130. The locking switch 100 is used to: allow the connecting rods 130 to move relative to each other when the walking aid is folded; and restrict the rotation of the connecting rods 130 when the walking aid is in use.

[0052] The locking switch 100 and the frame of the walking aid device, i.e., multiple connecting rods 130, can quickly respond to the user's operation, realize the rapid locking and releasing of the connecting rods 130, thereby improving the folding and unfolding efficiency of the walking aid or walking frame.

[0053] Continue to refer to Figures 1 to 7 The foldable walking aid device 200 includes multiple connecting rods 130, including a main rod 210 arranged opposite to each other, a main rod 210 connector connecting the two main rods 210, and side rods 230 extending along both sides of the main rod 210.

[0054] in, Figure 4 This is a schematic diagram of the unfolded foldable walking aid 200 according to an embodiment of this application, but not in a fully locked state (in conjunction with...). Figure 5 ), Figure 6 This is a schematic diagram of the structure of the foldable walking aid 200 after it is fully folded in this embodiment. Figure 6 The unlocking part 117 of the buckle 114 can be equipped with a pull ring, which allows the user to easily unlock the device by pulling the pull ring without performing complicated operations, making the unlocking operation simpler.

[0055] The main pole 210 is connected to the two main poles 210 by the connecting rod 130. Its function is to adjust the distance between the two main poles 210 so that the walking aid can adapt to different usage needs, such as unfolding or folding. The side pole 230 extends along both sides of the main pole 210. One end of its side pole can directly contact the ground or connect to the roller 270. When unfolded, it provides stable support or walking assistance to the user. When folded, it can move closer to the main pole 210 so that the walking aid is more compact when folded.

[0056] The opposing main rods 210 constitute the main support structure of the walking aid device. A sliding seat 240 and a limiting member 250 are sleeved on it. A buckle 114 is set on the sliding seat 240, and a locking member 120 is set on the limiting member 250. When the walking aid device is in use, when the two main rods 210 need to move away from each other to unfold the device, the main rod 210 connecting member will move downward as the two main rods 210 move away. The sliding seat 240 slides downward along the main rod 210 under the action of the main rod 210 connecting rod 130 and gravity. The fastening part on the sliding seat 240 gradually approaches the locking part on the limiting member 250.

[0057] When the abutting part 118 of the fastening part comes into contact with the locking part, one end of the abutting part 118 continues to be pressed down, while the other end is subjected to the opposite force from the locking part. This interaction of forces causes the fastening part to move, so that the locking part continues to push the abutting part 118 until the locking part is fully inserted into the opening 116 of the fastening part. The elastic member 113 causes the buckle 114 to reset, so that the opening 116 is tightly fitted with the locking part, achieving self-locking, thereby completing the stable deployment of the walking aid device.

[0058] Compared to the four-wheeled walking aid in Chinese patent CN110236893B, this design features a first locking part located on the main rod connector and a fastening part located on the limiting part of the main rod. In this embodiment, both the fastening part and the snap-fit ​​part are located on a single main rod, which improves the ease of use of the walking aid by making locking and unlocking easier during one-button multi-directional unfolding and storage operations.

[0059] Please continue to refer to this. Figures 4 to 7 The sliding seat 240 is integrally formed with the housing 111. The sliding seat 240 includes a first receiving groove 241, a second receiving groove 242 and a third receiving groove 243. The first receiving groove 241 is connected to the main rod 210 connector, the second receiving groove 242 is connected to the side rod 230 and the third receiving groove 243 is connected to the rotating shaft 112.

[0060] The sliding seat 240 serves as the main component connecting the main rod 210 to the connecting rod 130 and the side rod 230. By sliding on the main rod 210, the sliding seat 240 drives the connecting rod 210 and the side rod 230 to rotate relative to each other, thereby realizing the linkage folding and unfolding of the walking aid device. The housing 111 of the fastening part and the sliding seat 240 are integrally formed, which not only reduces production costs and assembly complexity, but also allows the sliding seat 240 to work better with the fastening part 110. This ensures that when the walking aid device is unfolded, the sliding seat 240 moves to abut against the limiting part, and the fastening part 110 and the snap-fit ​​part 120 are engaged, restricting the movement of the sliding seat 240 and thus achieving stable locking of the walking aid device.

[0061] like Figure 7As shown, the third receiving slot 243 includes a partition 244, which is used to divide the space of the third receiving slot 243. Since the main rod 210 of the walking aid is operated by the user and has a handle, the user will apply force by supporting the main rod 210 after unfolding. The sliding seat 240 is located on the main rod 210. If the third receiving slot 243 is a single piece or a single slot, the force is easily concentrated in a local area of ​​the fastener 110 or its housing 111, resulting in greater stress on the sliding seat 240, which may lead to damage after long-term use. By setting the partition 244 to divide the receiving slot, the force can be distributed to multiple areas, thereby effectively protecting the fastener 110 and the sliding seat 240 and avoiding damage due to excessive local stress. In addition, the partition 244 also acts as a reinforcing rib, further enhancing the structural strength and stability of the sliding seat 240, ensuring that it can withstand the user's operating force during use, and improving the overall reliability of the walking aid.

[0062] like Figure 8 As shown, the foldable walking aid device of this application embodiment also includes a foldable seat 260, which is located between two main rods 210. The two ends of the seat 260 are disposed above the sliding seat 240. A lifting member 261 is provided on the side of the seat 260 facing away from the sliding seat 240, and a pull rope 262 is provided on the side of the seat 260 facing the sliding seat 240. The second part 114-2 also includes an unlocking part 117. One end of the pull rope 262 is connected to the lifting member 261, and the other end is connected to the unlocking part 117.

[0063] The cushion 260 is used to provide a place for the user to sit and rest or to take a short break. In this embodiment, the cushion 260 is designed as a foldable cushion, divided into two parts along its center. When folded, the two parts can be folded upwards or downwards. A lifting element 261 is provided on the side of the cushion 260 for user use, allowing the user to control the unfolding and folding of the cushion 260 by pulling the lifting element 261. The cushion 260 can be compactly folded when the walking aid is stored, saving space, and can be quickly unfolded when needed, providing the user with the convenience of sitting down to rest or take a short break. The design of the lifting element 261 makes it easy for the user to operate, even when physically limited.

[0064] like Figure 8 As shown and combined Figure 6 To enable one-button folding and unfolding of the walking aid, the folding and unfolding of the seat cushion 260 also needs to be coordinated with other components. Therefore, a pull cord 262 is provided on the side of the seat cushion 260 facing the sliding seat 240. One end of the pull cord 262 is connected to the lifting member 261, and the other end is connected to the unlocking part 117 of the buckle 114. For example... Figure 7 As shown, the unlocking part 117 may be equipped with a pull ring, which is connected to the pull rope 262.

[0065] When the user needs to fold the walking aid, they pull the seat 260 upwards using the lifting component 261. The pull cord 262, connected to the lifting component 261, is pulled, and it connects to the unlocking part 117 of the buckle 114. Pulling the unlocking part 117 moves the buckle 114, causing the locking member 120 to disengage from the opening 116, thus unlocking the walking aid. After the locking member 110 is unlocked, as the user continues to lift the seat 260, the sliding seat 240 moves upwards. As the sliding seat 240 moves upwards, the main rod 210 connector also moves, causing the two main rods 210 to move closer together. Simultaneously, the two side rods 230 also gradually move closer to the main rods 210 as the sliding seat 240 moves upwards, ultimately completing the folding of the walking aid. The entire process is smooth and efficient; the user only needs to provide one upward pull on the seat 260 to easily complete the entire folding process, greatly saving the user's physical effort and time.

[0066] For details, please continue to refer to Figure 8 , Figure 8 The middle arrow indicates the transmission path of the user's pulling force. The lifting element 261 lifts the seat cushion 260 upwards and transmits the force to the unlocking part 117. The force transmission path is 45°. This angle reduces the loss of force during transmission. Because the force transmission is more efficient, the user will feel less effort when operating it. It is more suitable for elderly users or users with mobility difficulties to easily complete the folding and unfolding operation of the walking aid device.

[0067] For more specific details, please refer to Figure 4 and combined Figure 8 Because the buckle moves in the left-right direction of the walking aid device, Figure 4 In the X direction, the force transmission direction at a 45-degree angle is almost tangent to the upper and lower arcs of the opening 116 of the latch 114. The pulling force on the unlocking part also drives the latch to move to the left to separate from the locking member. By aligning the movement of the latch with the pulling force of the unlocking part, the design of this application improves the efficiency of the unlocking process. This consistency reduces force loss during transmission, making unlocking faster and more accurate.

[0068] In contrast, if the movement direction of the buckle is along the front-to-back direction of the walking aid device, that is... Figure 4 If the upward pulling force is perpendicular to the direction of the buckle's rotation in the Z-direction, the efficiency of force transmission may be reduced. This is because applying a pulling force perpendicular to the buckle's direction of movement is not conducive to directly pushing the buckle to rotate, resulting in less direct force transmission and increasing the difficulty of operation and the amount of force required.

[0069] In summary, the design of this application improves the convenience and efficiency of operating the walking aid by optimizing the force transmission angle and direction. The above embodiments mainly describe the unlocking and locking mechanisms when the walking aid is equipped with a seat 260. However, even without the seat 260, the design of the unlocking part 117 allows for the acceptance of any force to achieve unlocking.

[0070] The walking aid device described in this application can be a walking frame, walking cart, or walking chair, etc., with both unfolded and retracted states. That is, the side bar 230 of the walking aid device can either be in direct contact with the ground to provide support for the user, or it can be... Figure 8 As shown, the side bar 230 is connected to the roller 270, which contacts the ground, supporting the user and assisting them in moving and walking. Of course, it can also be, for example... Figure 4 and Figure 6 As shown, two opposing side bars 230 are in contact with the ground, and the other two side bars 230 are connected to the rollers 270, so that the walking aid can be adjusted according to different usage scenarios and user needs, providing stable support on smooth indoor floors or uneven outdoor terrain.

[0071] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. The scope of protection of this application should be determined by the scope of the claims. Although this application has disclosed preferred embodiments above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall fall within the scope of the technical solution of this application.

Claims

1. A locking switch, characterized in that, It is applied to at least two interconnected connecting rods; The locking switch includes a fastening component and a snap-fit ​​component that are connected in a mating manner; The fastening component includes: a housing, a rotating shaft, an elastic element, and a snap fastener; the housing is used to connect to the two connecting rods respectively; the rotating shaft is fixed inside the housing, and the elastic element and the snap fastener are sleeved on the rotating shaft; When the fastening member moves with the connecting rod and abuts against the locking member, the buckle rotates along the rotating shaft and engages with the locking member.

2. The locking switch according to claim 1, characterized in that, The buckle includes a first part located inside the housing and a second part extending outside the housing, the second part being used to connect with the snap-fit ​​element.

3. The locking switch according to claim 2, characterized in that, The second part includes a guide and an opening, and the snap-fit ​​component is a guide rod; The guide portion is used to abut against the guide rod to push the buckle to rotate, so that the opening engages with the guide rod.

4. The locking switch according to any one of claims 2-3, characterized in that, The second part also includes an unlocking part, which is used to receive external force to separate the second part from the snap-fit ​​component.

5. The locking switch according to claim 2, characterized in that, The first part further includes an abutting part, which is used to abut against the inner wall of the housing when the buckle rotates, so as to limit the rotation range of the buckle.

6. A foldable walking aid, characterized in that, Includes the locking switch as described in any one of claims 1-4 and a plurality of interconnectable connecting rods; The locking switch is disposed on at least one connecting rod, and the locking switch is used for: When the walking aid is folded, the connecting rods are allowed to move relative to each other; When the walking aid is in use, the rotation of each of the connecting rods is restricted.

7. The foldable walking aid device according to claim 6, characterized in that, The plurality of connecting rods include main rods arranged opposite each other, main rod connectors connecting two main rods, and side rods extending along both sides of the main rods; Each of the main rods is fitted with a sliding seat and a limiting member; the main rod connecting rod and the side rod are connected to the main rod through the sliding seat; The fastening member is disposed on the sliding base, and the snap-fit ​​member is disposed on the limiting member; When the walking aid is in use, the sliding seat moves toward the limiting member, which drives the main rod connector and the side rod connected to the sliding seat to move until the fastening member and the snap-fit ​​member are engaged and connected.

8. The foldable walking aid device according to claim 7, characterized in that, The sliding seat is integrally formed with the housing, and the sliding seat includes a first receiving groove, a second receiving groove and a third receiving groove; The first receiving groove is connected to the main rod connector, the second receiving groove is connected to the side rod, and the third receiving groove is connected to the rotating shaft.

9. The foldable walking aid device according to claim 8, characterized in that, The third receiving slot includes a partition for separating the space of the third receiving slot.

10. The foldable walking aid according to claim 7, characterized in that, It also includes a foldable seat cushion located between the two main rods, with both ends of the seat cushion positioned above the sliding seat; The side of the seat cushion facing away from the sliding seat is provided with a lifting member, and the side of the seat cushion facing the sliding seat is provided with a pull cord; The second part also includes an unlocking mechanism; One end of the pull rope is connected to the lifting component, and the other end is connected to the unlocking part.

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