Folding structure for vehicle and walking aid equipment

Abstract

The utility model discloses a folding structure and walking aid equipment for a vehicle. The vehicle is provided with a main rod, a front wheel and a rear wheel. The folding structure is characterized by comprising a connecting rod group and a rotating rod group, one end of the connecting rod group is connected with the front and rear wheels, and the other end is movably connected to a first joint of the main rod; one end of the rotating rod group is connected with the front and rear wheels, and the other end is movably connected to the second joint of the main rod; the first connecting part is positioned above the second connecting part; during folding, the first joint moves upwards on the main rod to drive the front wheel, the rear wheel and the rotating rod set to rotate upwards around the second joint and be folded close to the main rod. The wheels are folded in multiple directions through the folding structures, so that the folding size of the walking aid equipment can be smaller, and the requirement of a user for convenient storage or carrying is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel structures, and in particular relates to a folding structure and walking aid equipment for a vehicle. Background Art

[0002] A walking aid is a device that helps the human body support weight, maintain balance and walk. In simple terms, it can relieve the pressure on the legs, allowing people with mobility impairments to travel freely. Existing walkers can be used as wheelchairs or as walking aids, providing a new travel aid for the elderly.

[0003] Walking aids are usually four-wheeled rollators, with front wheels and rear wheels respectively arranged on two oppositely arranged frames. Most of the rollators on the market usually have the function of automatic or manual opening and folding, and there is no folding function for storing the wheels of the rollator, so that the size and area of ​​the rollator after folding are still too large, which is not convenient for storage or carrying. Utility Model Content

[0004] In view of the above problems, the purpose of the present application is to provide a folding structure and walking aid for a vehicle, which can store and fold the wheels of the vehicle so that the walking aid can be folded into a smaller size to meet the user's needs for easy storage or carrying.

[0005] According to one aspect of an embodiment of the present application, a folding structure for a vehicle is provided, the vehicle is provided with a main pole and front and rear wheels, the folding structure includes a connecting rod group and a rotating rod group, one end of the connecting rod group is connected to the front and rear wheels, and the other end is movably connected to the first connection of the main pole; one end of the rotating rod group is connected to the wheel, and the other end is movably connected to the second connection of the main pole; the first connection is located above the second connection; when folding, the first connection moves on the main pole, driving the front and rear wheels and the rotating rod group to rotate upward around the second connection, and fold close to the main pole.

[0006] Optionally, the folding structure further includes a first connecting seat; one end of the connecting rod group is connected to the main rod through the first connecting seat.

[0007] Optionally, the first connecting seat is arranged on the main rod and slides up and down along the main rod.

[0008] Optionally, the connecting rod group includes a front wheel connecting rod and a rear wheel connecting rod, one end of the front wheel connecting rod and the rear wheel connecting rod are respectively connected to the front and rear wheels, and the other end is movably connected to the first connecting seat.

[0009] Optionally, the folding structure further includes a second connecting seat; one end of the rotating rod group is connected to the main rod through the second connecting seat.

[0010] Optionally, a second connecting seat is provided at the bottom end of the main rod; the rotating rod group includes a front wheel rotating rod and a rear wheel rotating rod, one end of the front wheel rotating rod and the rear wheel rotating rod are respectively connected to the front and rear wheels, and the other end is movably connected to the second connecting seat.

[0011] Optionally, when the folding structure is folded to a final state, the front wheels and the rear wheels are flush with the ends of the main poles.

[0012] Optionally, when the folding structure is folded to a final state, the front wheels and the rear wheels are located within the height range of the main pole.

[0013] According to one aspect of an embodiment of the present application, a walking aid device is provided, the walking aid device comprising any one of the above-mentioned folding structures for a vehicle.

[0014] Optionally, the walking aid device includes two sets of symmetrically arranged front and rear wheels, two main poles, and two folding structures; it further includes a main pole folding structure, which is arranged between the two main poles to enable the two oppositely arranged main poles to move closer to or farther away from each other.

[0015] Optionally, the first connection seat includes a first mounting portion and a first mounting port; the second connection seat includes a second mounting portion and a second mounting port;

[0016] Optionally, one end of the connecting rod group is cooperatively connected with the first mounting portion, and the rotating rod group is cooperatively connected with the second mounting portion; the main rod folding structure is cooperatively connected with the first mounting opening and the second mounting opening respectively.

[0017] Optionally, the walking aid device further includes a steering mechanism connected to the connecting rod group and the rotating rod group respectively.

[0018] Optionally, the steering mechanism includes a first connecting portion and a second connecting portion, the first connecting portion is connected to one end of the connecting rod group, and the second connecting portion is connected to one end of the rotating rod group.

[0019] Optionally, the walking aid also includes a handle, which is retractable along the main pole; the handle is provided with a wire fixing groove for fixing the brake wire, and the other end of the brake wire is connected to a brake pad located on the rear wheel.

[0020] The folding structure for a vehicle provided in the embodiment of the present application drives the front and rear wheels of the vehicle to move in multiple directions by means of the mutual coordination and linkage between the connecting rod group and the rotating rod group, so that the size of the walking aid after folding is smaller and easier to carry and store. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a wheel folding structure provided in one embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of a wheel folding structure provided in an embodiment of the present application during folding;

[0024] Figure 3 A schematic diagram of the structure of the wheel folding structure provided in one embodiment of the present application after folding;

[0025] Figure 4 A schematic diagram of the structure of a wheel folding structure provided in another embodiment of the present application;

[0026] Figure 5 This application is based on Figure 4 A schematic structural diagram of the wheel folding structure provided in an embodiment after folding;

[0027] Figure 6 A schematic diagram of the structure of a walking aid device provided in an embodiment of the present application;

[0028] Figure 7 A schematic diagram of the structure of the first connecting socket and the second connecting socket provided in an embodiment of the present application;

[0029] Figure 8 A schematic diagram of the structure of the steering mechanism of the walking aid device provided in an embodiment of the present application.

[0030] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.

[0031] The reference numerals in the specific implementation manner are as follows:

[0032] 100. Folding structure for vehicle; 110. Front wheel; 120. Rear wheel; 130. Main rod; 140. Connecting rod group; 141. Front wheel connecting rod; 142. Rear wheel connecting rod; 150. Rotating rod group; 151. Front wheel rotating rod; 152. Rear wheel rotating rod; 160. First connecting seat; 161. First mounting part; 162. First mounting opening; 170. Second connecting seat; 171. Second mounting part; 172. Second mounting opening; 180. Steering mechanism; 181. First connecting part; 182. Second connecting part; 190. Connecting rod; 200. Walking aid; 210. Main rod folding structure; 220. Handle; 221. Wire fixing groove; 230. Brake line; 240. Brake pad. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0036] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0038] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0039] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0040] Walking aids are usually four-wheeled rollators, with front wheels and rear wheels on the two side frames. Most of the rollators on the market usually have the function of automatic or manual opening and folding, but most of them only move the two side frames closer to each other. As the distance between the two side frames decreases, the wheels on the two side frames move closer to each other, that is, the distance between the two front wheels and the distance between the two rear wheels decrease, and the distance between the front and rear wheels is not adjusted. This method of adjusting the distance between the wheels only from one axis makes the size of the rollator after folding still too large, which is not convenient for storage or carrying.

[0041] In view of this, the present application provides a folding structure 100 for a vehicle, please refer to Figures 1 to 3 The vehicle is provided with a main rod 130 and front and rear wheels 120, and the folding structure includes a connecting rod group 140 and a rotating rod group 150, one end of the connecting rod group 140 is connected to the front and rear wheels 120, and the other end is movably connected to the first connection of the main rod 130; one end of the rotating rod group 150 is connected to the wheel, and the other end is movably connected to the second connection of the main rod 130; the first connection is located above the second connection; when folding, the first connection moves on the main rod 130, driving the front and rear wheels 120 and the rotating rod group 150 to rotate upward around the second connection, and fold close to the main rod 130.

[0042] The folding structure 100 for a vehicle provided in the embodiment of the present application is connected to the first connection point and the second connection point of the main rod 130 respectively through the connecting rod group 140 and the rotating rod group 150. The movement of the first connection point enables the connecting rod group 140 and the rotating rod group 150 to cooperate with each other to realize folding. Specifically, when folding, the first connection point moves on the main rod 130. In this embodiment, the first connection point moves upward along the main rod 130, thereby driving the connecting rod group 140 connected thereto to move upward as well, and the rotating rod group 150 is hinged to the connecting rod group 140, and the connecting rod group 140 moves upward along the rotating rod group 150. Figure 2 The middle arrow direction is the upward rotation around the second connection. Since the connecting rod group 140 and the rotating rod group 150 are connected to the front and rear wheels 120, the front and rear wheels 120 also rotate upward to adjust the distance between the front and rear wheels 120 and the main rod 130, that is, the Y direction in the figure, and the front and rear wheels 120 move closer to the main rod 130 to adjust the distance between the front and rear wheels 120, that is, the X direction in the figure, so that the folded size of the vehicle can be smaller, meeting the needs of users for easy storage or carrying.

[0043] Among them, the front and rear wheels 120 are specifically the front wheel 110 and the rear wheel 120. The front wheel 110 and the rear wheel 120 are both wheels on the vehicle. They are only for the purpose of clearly expressing the wheels arranged on both sides of the main pole, and do not limit their positions and functions.

[0044] Further, continue to refer to Figures 1 to 3 The folding structure 100 for a vehicle further includes a first connecting seat 160 ; one end of the connecting rod group 140 is connected to the main rod 130 through the first connecting seat 160 , and the first connecting seat 160 is sleeved on the main rod 130 and slides up and down along the main rod 130 .

[0045] There are many ways to connect the connecting rod group 140 to the first connection point of the main rod 130. In this embodiment, the first connecting seat 160 is the first connection point of the above embodiment. The connecting rod group 140 is connected to the main rod 130 through the first connecting seat 160. The first connecting seat 160 can slide up and down on the main rod 130, driving the connecting rod group 140 to move with the first connecting seat 160.

[0046] Furthermore, the connecting rod group 140 includes a front wheel connecting rod 141 and a rear wheel connecting rod 142 , one end of the front wheel connecting rod 141 and the rear wheel connecting rod 142 are respectively connected to the front and rear wheels 120 , and the other end is movably connected to the first connecting seat 160 .

[0047] Specifically, the front wheel connecting rod 141 is respectively connected to the front wheel 110 and the first connecting seat 160, and the rear wheel connecting rod 142 is respectively connected to the rear wheel 120 and the first connecting seat 160.

[0048] The folding structure 100 for a vehicle of the present application is connected to the main rod 130 through the front wheel connecting rod 141 and the rear wheel connecting rod 142 through the first connecting seat 160 and slides on the main rod 130 in cooperation with the first connecting seat 160. The front wheel connecting rod 141 and the rear wheel connecting rod 142 slide upward and approach each other to adjust the distance between the front wheel 110 and the rear wheel 120, and at the same time adjust the length of the front wheel 110 and the rear wheel 120 in the direction of the main rod 130 (refer to Figure 2 The foldable vehicle has a compact size and is easy to carry and store.

[0049] Considering that the existing rollator is usually adjusted in height direction by adjusting the height of the handle 220 and the main rod 130, but the wheels are not adjusted in the height direction of the rollator, the height of the rollator after folding is still too large, affecting the user experience.

[0050] To solve this problem, in some embodiments of this application, please refer to Figure 1 , Figure 2 and Figure 3 The folding structure 100 for a vehicle further includes a second connecting seat 170 ; one end of the rotating rod group 150 is connected to the main rod 130 through the second connecting seat 170 .

[0051] Specifically, the second connecting seat 170 is provided at the bottom end of the main rod 130; the rotating rod group 150 includes a front wheel rotating rod 151 and a front wheel rotating rod 152, one end of the front wheel rotating rod 151 and the front wheel rotating rod 152 are respectively connected to the front and rear wheels 120, and the other end is movably connected to the second connecting seat 170.

[0052] In order to adjust the height distance between the front wheel 110 and the rear wheel 120 and the main rod 130, the folding structure 100 for the vehicle of the embodiment of the present application is further provided with a front wheel rotating rod 151 and a front wheel rotating rod 152, the front wheel rotating rod 151 is respectively connected to the front wheel 110 and the second connecting seat 170, and the front wheel rotating rod 152 is respectively connected to the rear wheel 120 and the second connecting seat 170. The front wheel rotating rod 151 is pin-connected to the front wheel connecting rod 141, and the front wheel rotating rod 152 is pin-connected to the rear wheel connecting rod 142. When the front wheel connecting rod 141 and the rear wheel connecting rod 142 are close to each other, the front wheel rotating rod 151 and the front wheel rotating rod 152 pin-connected thereto are driven to rotate around the second connecting seat 170 as the center. A front wheel rotating rod 151 is connected to the front wheel 110, and a front wheel rotating rod 152 is connected to the rear wheel 120; a second connecting seat 170 is also provided on the main rod 130, and the end of the front wheel rotating rod 151 away from the front wheel 110 and the end of the front wheel rotating rod 152 away from the rear wheel 120 are both rotatably connected to the second connecting seat 170; the front wheel rotating rod 151 and the front wheel connecting rod 141 are pin-connected, and the front wheel rotating rod 152 and the rear wheel connecting rod 142 are pin-connected, and when the front wheel connecting rod 141 and the rear wheel connecting rod 142 approach or move away from each other, the front wheel rotating rod 151 and the front wheel rotating rod 152 are driven to rotate relative to the main rod 130.

[0053] like Figure 1 , Figure 2 and Figure 3 As shown, Figure 2 is a schematic structural diagram of a folding structure 100 for a vehicle in the folding process, Figure 3 The schematic diagram of the structure of the wheel after folding. When the wheel needs to be folded, the first connecting seat 160 slides upward along the main rod 130. Figure 2 In the direction of the middle arrow, the front wheel connecting rod 141 and the rear wheel connecting rod 142 gradually move away from the second connecting seat 170, and the front wheel rotating rod 151 and the rear wheel rotating rod 152, which were originally tilted downward and opposite to each other, move along the second connecting seat 170. Figure 2 The front wheel rotating rod 151 and the rear wheel rotating rod 152 gradually become parallel to each other, and the front wheel connecting rod 141 and the rear wheel connecting rod 142 gradually change from an "eight" shape to a "V" shape, forming a diamond shape together with the front wheel rotating rod 151 and the front wheel rotating rod 152; as the first connecting seat 160 continues to slide upward to its maximum range on the main rod 130, the folding structure 100 for the vehicle is Figure 2 The status becomes Figure 3 , that is, the front wheel rotating rod 151 and the front wheel rotating rod 152 continue to rotate upward, and correspondingly, the front wheel 110 and the rear wheel 120 rotate accordingly. Figure 3As shown, at this time, the height of the entire folding structure 100 for a vehicle is adjusted from the total height of the original length of the main rod 130 plus the height of the wheel to the same length as the main rod 130.

[0054] Considering that when folding, the linkage mode of driving the connecting rod group 140 and the rotating rod group 150 may not only be the mode of moving up and down along the main rod 130 by the first connection, the present application also provides a second embodiment, Figure 4 A schematic diagram of a folding structure 100 for a vehicle provided in another embodiment of the present application is shown in FIG. Figure 4 and Figure 5 As shown, a main rod folding structure 210 is provided between the two side main rods 130 of the wheel folding structure 100 provided in the second embodiment, and the main rod folding structure 210 is respectively connected to the two side main rods 130 through the connecting rod 190. When the wheel needs to be folded, the main rod 130 is pressed downward to drive the second connecting seat 170 fixedly connected thereto to move downward, and the connecting rod 190 will rotate from tilting to gradually parallel with the main rod 130. Since the front wheel rotating rod 151 and the front wheel rotating rod 152 are rotatably connected to the second connecting seat 170, the second connecting seat 170 moves downward with the main rod 130, and the front wheel rotating rod 151 and the front wheel rotating rod 152 are turned upward along the second connecting seat 170 toward the end of the main rod 130 away from the second connecting seat 170. The front wheel rotating rod 151 and the front wheel rotating rod 152 change from a "V"-shaped opening downward to an opening upward, and together with the front wheel connecting rod 141 and the rear wheel connecting rod 142 form a rhombus. Finally, after the wheel is folded, Figure 5 shown.

[0055] In the second embodiment, the second connection seat 170 can also be movably connected to the main rod 130 like the first connection seat 160, that is, the second connection seat 170 and the first connection seat 160 are close to or away from each other when the wheel is folded, and the main rod 130 is a telescopic rod with adjustable length. Considering the relationship between the sliding range of the second connection seat 170 on the main rod 130 and the maximum movable amount of each linkage component in the wheel folding structure 100, the main rod 130 is used as a telescopic rod under the condition of limiting the length of the main rod 130, so that the second connection seat 170 has a certain margin to slide on the main rod 130. Since the length of the main rod 130 and the distance between the two main rods 130 preliminarily define the size of the wheel folding structure 100 when it is unfolded and stored, in order to ensure that the size of the wheel folding structure 100 after storage can be adjusted from multiple directions, when the second connection seat 170 is set to be movably connected to the main rod 130, the main rod 130 is set to be a telescopic rod.

[0056] exist Figures 1 to 3In the embodiment, the second connecting seat 170 can be fixedly connected to the end of the main rod 130, and the first connecting seat 160 can slide on the main rod 130 away from or close to the second connecting seat 170130 to realize the storage and unfolding of the folding structure 100 for the vehicle. Since the second connecting seat 170 is indirectly connected to the front wheel 110 and the rear wheel 120, the second connecting seat 170 is set to be fixedly connected to the main rod 130, which can ensure that the folding structure 100 for the vehicle is structurally stable when folded and unfolded, and is not easy to shake, which is more convenient for users to operate.

[0057] For further information, please refer to Figure 2 and Figure 3 When the folding structure is folded to the final state, the front and rear wheels 120 are flush with the end of the main rod 130.

[0058] like Figure 2 and Figure 3 As shown, in order to ensure that the height dimension of the folding structure 100 for a vehicle after folding does not exceed the length of the main rod 130, the ends of the front wheels 110 and the rear wheels 120 that are in contact with the ground are flush with the end of the main rod 130. In the embodiment of the present application, since the second connecting seat 170 is fixedly connected to the main rod 130, and since the front wheel rotating rod 151 and the front wheel rotating rod 152 rotate around the second connecting seat 170 as the center, the second connecting seat 170 is set at the end of the main rod 130, which can ensure the linkage and stability of the folding structure 100 for a vehicle, and the folding structure 100 for a vehicle can be folded from Figure 1 The status becomes Figure 3 .

[0059] In some embodiments of the present application, when the folding structure is folded to the final state, the front wheel 110 and the rear wheel 120 are located within the height range of the main rod 130. In order to ensure that the height dimension of the folding structure 100 for the vehicle after folding does not exceed the length of the main rod 130, the front wheel 110 and the rear wheel 120 can also be folded within the main rod 130. Figure 2 Any position within the Y direction range, as long as it does not exceed the height of the main rod 130.

[0060] More specifically, in one embodiment of the present application, please continue to refer to Figure 3 When the front wheels 110 and the rear wheels 120 are folded to the final state, the front wheels 110 and the rear wheels 120 are staggered.

[0061] In order to make the width of the folding structure 100 for a vehicle smaller after folding, the front wheels 110 and the rear wheels 120 are arranged to be staggered and overlapped with each other in the final state, such as Figure 3 As shown, the rear wheel 120 covers a portion of the front wheel 110. In the embodiment of the present application, the front wheel 110 may be located outside in the final folded state, and the rear wheel 120 may be covered by the front wheel 110.

[0062] It should be noted that the “front wheels” and “rear wheels” mentioned in the folding structure 100 for a vehicle of the present application are only for distinguishing the two wheels distributed on the main rod 130 , and do not limit the positions and functions of the wheels.

[0063] In addition, continue to refer to Figure 1 , Figure 2 and Figure 3 In the embodiment of the present application, the diameter of the front wheel 110 is smaller than the diameter of the rear wheel 120. This arrangement combined with the overlapping and staggered scheme of the front wheel 110 and the rear wheel 120 can further reduce the folded size of the folding structure 100 for the vehicle, save space, and facilitate carrying.

[0064] According to one aspect of the embodiment of the present application, please refer to Figure 6 , a walking aid device 200 is provided, and the walking aid device 200 includes any one of the above-mentioned folding structures 100 for a vehicle.

[0065] Among them, the walking aid device 200 includes two sets of front and rear wheels 120 symmetrically arranged, two main poles 130, and two folding structures; the walking aid device 200 also includes a main pole folding structure 210, and the main pole folding structure 210 is arranged between the two main poles 130, so that the two oppositely arranged main poles 130 are close to or away from each other.

[0066] like Figure 6 As shown, the walking aid device 200 generally includes two main poles 130 disposed opposite to each other. The two main poles 130 are connected by a main pole folding structure 210. The main pole folding structure 210 is used to allow the two main poles 130 to be folded along the Figure 6 The Z direction is close to each other.

[0067] Furthermore, the main rod folding structure 210 includes at least two support rods, and there is at least one intersection point between the two support rods; each support rod is connected to the first connecting seat 160 and the second connecting seat 170 respectively.

[0068] There are many ways to fold the walking aid device 200 by bringing the two main rods 130 closer to each other to reduce the size of the walking aid device 200. In the embodiment of the present application, for example, Figure 1 and 6As shown, the main rod folding structure 210 is two support rods arranged in an "X" shape that cross each other. The two support rods are respectively connected to the first connection seat 160 and the second connection seat 170 of the main rod 130 on one side. When the first connection seat 160 slides upward, the two support points rotate along the intersection point and approach each other, so that the main rods 130 on both sides approach each other. Of course, the main rod folding structure 210 of the present application can also be "W"-shaped, "V"-shaped, "Y"-shaped, "XX"-shaped, or any shape that can be presented by a group of support rods with at least one intersection, which is not limited here.

[0069] For further information, please refer to Figure 1 , Figure 6 and Figure 7 The first connecting seat 160 includes a first mounting portion 161 and a first mounting port 162; the second connecting seat 170 includes a second mounting portion 171 and a second mounting port 172; the front wheel connecting rod 141 and the rear wheel connecting rod 142 are connected to the first mounting portion 161; the main rod folding structure 210 is connected to the first mounting port 162; the front wheel rotating rod 151 and the front wheel rotating rod 152 are connected to the second mounting portion 171; the main rod folding structure 210 is connected to the second mounting port 172.

[0070] In order to improve the linkage and ease of operation of the walking aid device 200 when folded or unfolded, the walking aid device 200 can be folded or unfolded in one step. Figure 6 In the embodiment of the present application, the first connecting seat 160 is provided with a first mounting portion 161 which is connected to the front wheel connecting rod 141 and the rear wheel connecting rod 142, and a second mounting opening 172 which is connected to the main rod folding structure 210. It should be noted that: Figure 7 The first mounting parts 161 shown in the figure are two that are arranged opposite to each other, which are not shown due to the viewing angle. Correspondingly, the second connecting seat 170 is also provided with a second mounting part 171 that cooperates with the front wheel connecting rod 141 and the rear wheel connecting rod 142, and a second mounting opening 172 that cooperates with the main rod folding structure 210. Thus, the main rod folding structure 210, the front wheel connecting rod 141, the rear wheel connecting rod 142, the front wheel rotating rod 151 and the front wheel rotating rod 152 are linked to each other. Only by sliding the first connecting seat 160 on the main rod 130 can the above-mentioned components be driven to move relative to each other at one time, so that the walking aid device 200 can move along the main rod 130 at the same time. Figure 6 Folding and unfolding in the three axes of X, Y and Z.

[0071] In some embodiments of this application, please refer to Figure 1 , Figure 6 and Figure 8The front wheel 110 is provided with a steering mechanism 180 , and the steering mechanism 180 includes a first connecting portion 181 and a second connecting portion 182 . The front wheel connecting rod 141 is connected to the first connecting portion 181 , and the front wheel rotating rod 151 is connected to the second connecting portion 182 .

[0072] The front wheel 110 is provided with a steering mechanism 180, that is, the front wheel 110 is a universal wheel, so as to improve the flexibility and maneuverability of the product using the folding structure 100 for vehicles of the present application, and can adapt to a variety of different environments. When the user unfolds the wheel, the product moves more smoothly. Since the front wheel connecting rod 141 and the front wheel rotating rod 151 need to be pin-connected, and the front wheel rotating rod 151 is driven to rotate when the front wheel connecting rod 141 moves through the pin shaft, therefore, in the embodiment of the present application, the steering mechanism 180 is also provided with a first connecting portion 181 and a second connecting portion 182 respectively connecting the front wheel connecting rod 141 and the front wheel rotating rod 151, so as to realize the pin connection between the front wheel connecting rod 141 and the front wheel rotating rod 151, so as to replace the structure of the fixing pin and the positioning pin.

[0073] In the embodiment of the present application, the walking aid 200 also includes a handle 220, which can be extended and retracted along the main rod 130; the handle 220 is provided with a wire fixing groove 221 for fixing the brake wire 230, and the other end of the brake wire 230 is connected to the brake pad 240 located on the rear wheel 120.

[0074] like Figure 1 and Figure 6 As shown, the walking aid device 200 also includes a handle 220 for the user to hold and to support the user with limited mobility to stand. The handle 220 can be extended in the direction of the main rod 130. Figure 6 Y direction to accommodate users of various heights. Figure 2 and Figure 3 When the walking aid device 200 is folded to the final state, the handle 220 abuts against the first connecting seat 140 .

[0075] Continue to refer Figure 6 The handle 220 is connected to the brake pad 240 through the brake line 230, and the user can also control the brake of the walker through the handle 220 to ensure the safety of the user. Based on the above embodiment in which the front wheel is a universal wheel, due to the guiding function of the universal wheel, its load-bearing capacity is weaker than that of ordinary wheels. In this embodiment, the brake pad 240 is set on the rear wheel to achieve the braking of the walking aid device 200. Of course, the way in which the handle 220 prevents the wheel from moving through the brake pad 240 can achieve this effect in any way, and the brake pad 240 and other structures can also be set on any wheel of the walking aid device 200.

[0076] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present utility model and the features therein can be combined with each other to obtain new embodiments.

[0077] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. The protection scope of the utility model shall be based on the protection scope of the claims. Although the utility model has been disclosed as a preferred embodiment, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modify the technical content disclosed above to an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A folding structure for a vehicle, the vehicle having a main rod and front and rear wheels; characterized in that: The folding structure comprises a connecting rod group and a rotating rod group, wherein one end of the connecting rod group is connected to the front and rear wheels, and the other end is movably connected to the first connection of the main rod; one end of the rotating rod group is connected to the front and rear wheels, and the other end is movably connected to the second connection of the main rod; The first connection is located above the second connection; when folding, the first connection moves on the main rod, driving the front and rear wheels and the rotating rod group to rotate upward around the second connection and fold close to the main rod.

2. The folding structure for a vehicle according to claim 1, characterized in that: The folding structure also includes a first connecting seat; one end of the connecting rod group is connected to the main rod through the first connecting seat.

3. The folding structure for a vehicle according to claim 2, characterized in that: The first connecting seat is sleeved on the main rod and slides up and down along the main rod.

4. The folding structure for a vehicle according to claim 2 or 3, characterized in that: The connecting rod group includes a front wheel connecting rod and a rear wheel connecting rod, one end of the front wheel connecting rod and the rear wheel connecting rod are respectively connected to the front and rear wheels, and the other end is movably connected to the first connecting seat.

5. The folding structure for a vehicle according to claim 1 or 2, characterized in that: The folding structure also includes a second connecting seat; one end of the rotating rod group is connected to the main rod through the second connecting seat.

6. The folding structure for a vehicle according to claim 5, characterized in that: The second connecting seat is provided at the bottom end of the main rod; the rotating rod group includes a front wheel rotating rod and a rear wheel rotating rod, one end of the front wheel rotating rod and the rear wheel rotating rod are respectively connected to the front and rear wheels, and the other end is movably connected to the second connecting seat.

7. The folding structure for a vehicle according to claim 1, characterized in that: When the folding structure is folded to a final state, the front and rear wheels are flush with the end of the main rod.

8. The folding structure for a vehicle according to claim 1, characterized in that: When the folding structure is folded to a final state, the front and rear wheels are located within the height range of the main rod.

9. A walking aid, characterized in that: The folding structure comprises the folding structure for a vehicle according to any one of claims 1 to 8.

10. The walking aid device according to claim 9, characterized in that: The walking aid device comprises two groups of front and rear wheels symmetrically arranged, two main poles, and two folding structures; the walking aid device also comprises a main pole folding structure, wherein the main pole folding structure is arranged between the two main poles so as to make the two oppositely arranged main poles approach or move away from each other.

11. The walking aid device according to claim 10, characterized in that: The first connection seat includes a first mounting portion and a first mounting port; the second connection seat includes a second mounting portion and a second mounting port; One end of the connecting rod group is connected to the first mounting portion, and the rotating rod group is connected to the second mounting portion; the main rod folding structure is connected to the first mounting opening and the second mounting opening respectively.

12. The walking aid device according to claim 10, characterized in that: The walking aid device further includes a steering mechanism connected to the connecting rod group and the rotating rod group respectively.

13. The walking aid device according to claim 12, characterized in that: The steering mechanism includes a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to one end of the connecting rod group, and the second connecting portion is connected to one end of the rotating rod group.

14. The walking aid device according to claim 10, characterized in that: The walking aid device further comprises a handle, and the handle can be extended and retracted along the main pole; The handle is provided with a wire fixing groove for fixing the brake wire, and the other end of the brake wire is connected to the brake pad located on the rear wheel.

Images