Folding assembly of wheelchair and wheelchair

Abstract

The utility model discloses a folding assembly of a wheelchair and the wheelchair. The folding assembly comprises a first connecting rod, a second connecting rod; the second connecting rod is rotatably connected to the first connecting rod; the locking mechanism comprises a first locking piece, a second locking piece, a locking piece and an unlocking piece, the first locking piece is connected to the first connecting rod, the second locking piece is connected with the second connecting rod and is in running fit with the first locking piece, and the locking part has a locking position and an unlocking position after the second locking piece rotates; the locking piece comprises a connecting section and a locking section, and the connecting section is rotatably connected to the first locking piece so as to drive the locking section to be close to or away from the second locking piece. The wheelchair comprises a seat, a leg frame and the folding assembly. According to the folding assembly of the wheelchair and the wheelchair, when the folding assembly is in the locking state, the locking part of the second locking piece rotates to the locking position and is locked by the locking section, and when the folding assembly is in the non-locking state, the locking part of the second locking piece rotates to the unlocking position, so that the situation of wrong locking is prevented.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, and in particular to a folding assembly for a wheelchair and the wheelchair itself. Background Technology

[0002] Currently, wheelchairs are mainly used by people with disabilities or those who have difficulty moving due to other reasons. Their main structure usually includes a seat, backrest, leg rest, and footrest. To make them easier to carry, related technologies often design the seat, backrest, leg rest, or footrest as a folding structure. When in use, the structure unfolds and locks itself in place. When not in use, the components can be folded up by unlocking them.

[0003] Given the specific needs of wheelchair users, the locking mechanisms used on wheelchairs need to be simple and easy to operate. If screws, nuts, or other threaded mechanisms are used for unlocking or locking, the operation is quite laborious. If hooks and locking shafts are used, the locking mechanism is prone to loosening, making it unstable and susceptible to accidental locking under external force. Utility Model Content

[0004] In order to overcome at least one of the defects described in the prior art, the present invention provides a folding assembly for a wheelchair and a wheelchair, wherein when in the locked state, the locking part of the second locking plate rotates to the locked position to lock with the locking segment, and when in the unlocked state, the locking part of the second locking plate rotates to the unlocked position to prevent accidental locking.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A folding assembly for a wheelchair, comprising,

[0007] First connecting rod;

[0008] The second connecting rod is rotatably connected to the first connecting rod.

[0009] A locking mechanism, comprising a first locking plate, a second locking plate, a locking element, and an unlocking element, wherein the first locking plate is connected to the first connecting rod, the second locking plate is connected to the second connecting rod and rotatably engages with the first locking plate, and the locking part has a locked position and an unlocked position after the second locking plate is rotated;

[0010] The locking component includes a connecting section and a locking section. The connecting section is rotatably connected to the first locking piece to move the locking section closer to or away from the second locking piece. The locking section is used to rotate near the locking part when the locking part is in the locking position and lock into the locking part.

[0011] As an optional implementation, the second locking piece is provided with a locking notch, which engages with the locking segment when the locking segment approaches; the locking notch forms the locking part.

[0012] As an optional implementation, the second locking piece is provided with a relief recess, which is used to avoid the locking segment when the locking part is in the unlocked position.

[0013] As an optional implementation, the first locking piece is provided with a guide groove that extends in the rotational direction of the locking member; the locking segment is provided with a guide post; the guide post slides through the guide groove.

[0014] As an optional implementation, the locking mechanism further includes an unlocking component, which is rotatably mounted on the second connecting rod. The unlocking component has an unlocking part that is offset from the rotation axis of the unlocking component. The unlocking part moves closer to or further away from the locking component when the unlocking component rotates.

[0015] As an optional implementation, the unlocking component further includes a connecting shaft that passes through the first locking plate and is rotatably mounted on the second locking plate.

[0016] The locking component includes a locking arm, a locking rod, and a first elastic component. One end of the locking arm is rotatably connected to the first locking plate via a swing shaft, and the other end of the locking arm is provided with the locking rod. One end of the elastic component is connected to the swing shaft, and the other end of the elastic component is connected to the locking arm. The elastic component is used to provide an elastic stress that drives the locking arm to swing.

[0017] The unlocking part is used to rotate and push the locking arm near the locking member.

[0018] As an optional implementation, there are two first locking plates, which are spaced apart; there are also two locking arms and two first elastic components, and the locking arms of the two locking components are rotatably connected to the outside of the first locking plates; the locking rod passes through the first locking plates and is connected between the two locking arms.

[0019] The second locking piece is rotatably connected between the two first locking pieces.

[0020] As an optional implementation, the locking mechanism further includes a rotating shaft that passes sequentially through one of the first locking plates, the second locking plate, and the other second locking plate, and is rotatably connected to the second connecting rod; the second locking plate is rotatably engaged with the rotating shaft.

[0021] As an optional implementation, the unlocking component further includes an unlocking knob and a second elastic component. The unlocking knob is rotatably connected to the outside of the second connecting rod, and the unlocking part includes an unlocking rod disposed inside the unlocking knob. One end of the second elastic component is disposed inside the unlocking knob, and the other end of the second elastic component is connected to the second connecting rod.

[0022] A wheelchair includes a seat, leg supports, and a folding assembly, wherein a first connecting rod is connected to the seat, and a second connecting rod is connected to the leg supports.

[0023] In summary, this utility model has the following technical effects:

[0024] When unlocking is required for folding, the locking member can be rotated to move the locking section away from the second locking plate. As the locking section of the locking member rotates away from the second locking plate, it disengages from the locking part, and the second locking plate loses its locking function. At this time, the second locking plate can rotate relative to the first locking plate so that the locking part on the second locking plate is in the unlocked position. At the same time, the second connecting rod can rotate relative to the first connecting rod to the folded state. Since the locking part on the second locking plate is in the folded state and the locking part is not in the locking position, even if the locking member is rotated under non-human-induced external force, there will be no accidental locking, making it convenient for disabled people to use. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of one possible use structure of the locking mechanism of this utility model;

[0027] Figure 2 This is a schematic diagram of the disassembled use structure of the locking mechanism of this utility model;

[0028] Figure 3 This is a schematic diagram of another structural use of the locking mechanism of this utility model;

[0029] Figure 4This is a schematic diagram showing another disassembled use of the locking mechanism of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the first locking piece of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the second locking piece of this utility model;

[0032] Figure 7 This is a structural schematic diagram of the locking component of this utility model;

[0033] Figure 8 This is a schematic diagram of the unlocking component of this utility model;

[0034] Figure 9 This is a schematic diagram of the folding component of this utility model;

[0035] Figure 10 This is a schematic diagram of another usage state of the folding component of this utility model.

[0036] The reference numerals in the attached drawings have the following meanings: 10, first locking piece; 11, guide groove; 20, second locking piece; 21, locking part; 22, clearance recess; 30, locking element; 31, locking swing arm; 32, locking rod; 33, swing shaft; 34, first elastic component; 40, unlocking element; 41, unlocking rod; 42, second elastic component; 50, rotating shaft; 60, first connecting rod; 70, second connecting rod. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In this invention, 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 invention 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.

[0039] Furthermore, in addition to indicating direction 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 utility model according to the specific circumstances.

[0040] 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 utility model based on the specific circumstances.

[0041] 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.

[0042] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0043] Example 1,

[0044] See Figures 1-10 This utility model discloses a folding assembly for a wheelchair, including a first connecting rod 60, a second connecting rod 70, and a locking mechanism. The second connecting rod 70 is rotatably connected to the first connecting rod 60.

[0045] The specific locking mechanism includes a first locking plate 10, a second locking plate 20, a locking element 30, and an unlocking element 40. The first locking plate 10 is connected to the first connecting rod 60, and the second locking plate 20 is connected to the second connecting rod 70 and rotatably engages with the first locking plate 10. A locking part 21 is provided on the second locking plate 20. The locking part 21 has a locked position and an unlocked position after the second locking plate 20 is rotated. It should be noted that, for example, when the second locking plate 20 is rotated to a vertical position, the locking part 21 is located at the top or bottom of the second locking plate 20, which is the locked position; when the second locking plate 20 is rotated to a horizontal position, the locking part 21 is located at the front or rear end of the second locking plate 20, which is the unlocked position.

[0046] The aforementioned locking member 30 includes a connecting section and a locking section. The connecting section is rotatably connected to the first locking piece 10. When the connecting section of the locking member 30 rotates relative to the first locking piece 10, the locking section of the locking member 30 can drive the locking section to move closer to or away from the second locking piece 20. When the locking part 21 is in the locking position, the locking section rotates close to the locking part 21 and locks into the locking part 21.

[0047] Based on the above structure, when using the folding assembly of the wheelchair of this utility model, the folding assembly can be used to fold the backrest of the wheelchair relative to the seat, or to fold the leg support of the wheelchair relative to the seat, or to fold the footrest of the wheelchair relative to the leg support.

[0048] During assembly, the first connecting rod 60 and the second connecting rod 70 can be connected to two components that need to be rotated, folded, or unfolded. In the unfolded state, the second connecting rod 70 is rotated downwards, causing the second locking plate 20 to rotate downwards relative to the first locking plate 10. At this time, the locking part 21 of the second locking plate 20 can rotate to the top locking position, so that the locking member 30 rotates toward the second locking plate 20. The locking section on the locking member 30 can then lock and engage with the locking part 21 on the second locking plate 20. In this way, the second locking plate 20 can be locked relative to the first locking plate 10. Due to the locking effect of the locking member 30, the second connecting rod 70 and the first connecting rod 60 can be in a locked state, making the second connecting rod 70 and the first connecting rod 60 locked in the unfolded state, resulting in a stable structure.

[0049] When unlocking is required for folding, the locking member 30 can be rotated, causing the locking section of the locking member 30 to rotate away from the second locking piece 20. During the rotation of the locking section of the locking member 30 away from the second locking piece 20, it disengages from the locking part 21, and the second locking piece 20 loses its locking function. At this time, the second locking piece 20 can rotate relative to the first locking piece 10 so that the locking part 21 on the second locking piece 20 is in the unlocked position. At the same time, the second connecting rod 70 can rotate relative to the first connecting rod 60 to the folded state. Since the locking part 21 on the second locking piece 20 is in the folded state and the locking part 21 is in the off-lock position, even if the locking member 30 is rotated under non-human-induced external force, there will be no accidental locking, making it convenient for disabled people to use.

[0050] Example 2,

[0051] The folding assembly is used on the leg frame and footrest of a wheelchair. The first connecting rod 60 is connected to the leg frame of the wheelchair, and the second connecting rod 70 is connected to the footrest. When the footrest is in normal use, the second connecting rod 70 of the footrest rotates downward relative to the first connecting rod 60, and the footrest can be unfolded.

[0052] At this time, the locking part 21 of the second locking plate 20 inside the second connecting rod 70 is in the top locked position. The user can rotate the locking member 30 on the first locking plate 10 while sitting in the wheelchair, causing the locking section of the locking member 30 to rotate toward the second locking plate 20. Since the locking part 21 of the second locking plate 20 is in the locked position, the locking section can be locked inside the second locking plate 20 when it rotates toward the second locking plate 20. The second locking plate 20 remains locked, so the second connecting rod 70 connected to the second locking plate 20 can also remain locked. In this state, the footrest and legrest can remain locked in the unfolded state.

[0053] When folding, by rotating the locking member 30, the locking section of the locking member 30 is driven away from the locking part 21 of the second locking piece 20. After disengaging from the locking part 21, the tripod is rotated directly. The rotation of the tripod will drive the second locking piece 20 of the second connecting rod 70 to rotate. The second locking piece 20 can then rotate the locking part 21 to the unlocked position, which is offset from the locked position. At this time, even if the locking member 30 is accidentally touched by hand, it will not be locked because the locking part 21 is not in the locked position. This makes it convenient to unfold the tripod directly afterward, and the operation is convenient.

[0054] It should be noted that when the tripod is folded up, it can be rotated directly to touch the ground and kept folded.

[0055] Example 3,

[0056] As an optional implementation, see [link to implementation details]. Figure 2 , Figure 4 as well as Figure 6 The second locking piece 20 is provided with a locking notch, and the locking notch engages with the locking section when the locking section approaches it; the locking notch is formed as a locking part 21. Thus, when the second connecting rod 70 rotates relative to the first connecting rod 60 to the unfolded position, the second locking piece 20 inside the second connecting rod 70 rotates, and the locking part 21 of the second locking piece 20 is located at the top locking position. At this time, when the locking member 30 is rotated, the locking section of the locking member 30 can engage with the locking notch to achieve locking.

[0057] Because the locking part 21 uses a notch for locking, it is convenient for the locking section to rotate and engage, making unlocking and locking more convenient.

[0058] Of course, a latching structure can also be provided on the second locking piece 20. Correspondingly, a bayonet structure can be provided on the locking section of the locking member 30. In this way, when locking, the locking bayonet of the locking member 30 can engage with the latching structure of the second locking piece 20 to lock, which also facilitates unlocking and locking. In other implementation structures, the locking part 21 on the second locking piece 20 can also be a socket, with a locking block provided on the locking section. The locking block can be inserted into the socket to achieve locking and prevent rotation. The specific structure of the locking part 21 can be selected and set according to actual needs.

[0059] Example 4,

[0060] As an optional implementation, based on any of the above embodiments, see [link to relevant documentation]. Figure 2 , Figure 4 as well as Figure 6 Furthermore, an avoidance recess 22 may be provided on the second locking piece 20. The avoidance recess 22 and the locking part 21 may be provided at intervals on the second locking piece 20. Specifically, when the locking part 21 of the second locking piece 20 is rotated to the unlock position, the avoidance recess 22 may be located on the rotation trajectory of the locking segment.

[0061] In actual use, when the second locking piece 20 is in the unlocked position and there is no accidental locking between the locking part 21 of the second locking piece 20 and the locking section of the locking member 30, the locking member 30 is prone to accidental rotation under external force. The locking section of the locking member 30 will also rotate towards the second locking piece 20. At this time, due to the setting of the avoidance recess 22, the locking section of the locking member 30 is housed within the avoidance recess 22, preventing the locking section of the locking member 30 from protruding.

[0062] Example 5,

[0063] As an optional implementation, based on any of the above embodiments, see [link to relevant documentation]. Figure 1-5 The first locking piece 10 is provided with a guide groove 11, which extends in the rotation direction of the locking member 30. A guide post is provided in the locking section; the guide post slides through the guide groove 11. Thus, when the locking member 30 rotates, the guide post on the locking section can slide within the guide groove 11 of the first locking piece 10. The guide groove 11 can be an arc-shaped groove, so the rotation range of the locking section can be limited by the guide groove 11, making the rotation trajectory of the locking section arc-shaped and thus the rotation stroke of the locking section is determined. Each time it rotates to the position of the end wall of the guide groove 11, locking or unlocking can be completed, which facilitates quick locking and unlocking.

[0064] Example 6,

[0065] As an optional implementation, see [link to implementation details]. Figures 1-8Based on any of the above embodiments, the locking mechanism further includes an unlocking member 40, which is rotatably mounted on the second connecting rod 70. The unlocking member 40 has an unlocking part, which is offset from the rotation axis 50 of the unlocking member 40. When the unlocking member 40 rotates, the unlocking part moves closer to or further away from the locking member 30. In this way, a rotatable unlocking member 40 can be provided outside the second connecting rod 70. The user can operate the unlocking member 40 from the outside, so that the unlocking member 40 rotates and drives the unlocking part to rotate. Since the unlocking part is offset from the rotation axis 50 of the unlocking member 40, when the unlocking member 40 rotates, the unlocking part can face up or down. When the unlocking part rotates upward, it can push the locking section, pushing the locking section away from the locking part 21 of the second locking piece 20, thereby unlocking. The operation is convenient.

[0066] Of course, without the unlocking component 40, a rotating component can be connected to the locking component 30. The rotating component can extend out of the first connecting rod 60. By rotating the rotating component outside the first connecting rod 60, the internal locking component 30 can be rotated, thereby achieving unlocking and locking.

[0067] More specifically, see Figure 8 The unlocking component 40 also includes a connecting shaft that passes through the first locking piece 10 and is rotatably mounted on the second locking piece 20.

[0068] See Figure 7 The locking member 30 includes a locking arm 31, a locking rod 32, and a first elastic member 34. One end of the locking arm 31 is rotatably connected to the first locking piece 10 via a swing shaft 33, and the other end of the locking arm 31 is provided with a locking rod 32. One end of the first elastic member 34 is connected to the swing shaft 33, and the other end of the first elastic member 34 is connected to the locking arm 31. The elastic member is used to provide an elastic stress that drives the locking arm 31 to swing. The unlocking part is used to rotate and push the locking arm 31 near the locking member 30.

[0069] Based on the above structure, during the assembly of the locking member 30, the locking arm 31 is rotatably connected to the first locking plate 10 via the swing shaft 33. The other end of the locking arm 31 is provided with a locking rod 32, so that the locking arm 31 can swing relative to the first locking plate 10 along the rotation axis 50 with the swing shaft 33 as the swing shaft 33, thus the locking arm 31 can swing upward. Since the locking arm 31 and the swing shaft 33 are connected by the first elastic member 34, when the unlocking part of the unlocking member 40 pushes the locking arm 31 upward, the locking rod 32 of the locking arm 31 can disengage from the locking part 21 on the second locking plate 20. Based on the structure that the locking part 21 is a locking notch, the locking rod 32 disengages from the locking notch to unlock. At this time, the first elastic member 34 is stretched or compressed with the rotation of the locking arm 31.

[0070] When locked, the locking part 21 of the second locking plate 20 rotates to the locked position, and the elastic stress of the first elastic member 34 drives the locking arm 31 to rotate and lock close to the locking part 21 of the second locking plate 20. At this time, the elastic stress of the first elastic member 34 can also make the locking rod 32 and the locking part 21 fit tightly together, so the locking state is more stable.

[0071] When the locking member 30 includes a locking arm 31, the connecting section is formed at the end connected to the first locking piece 10, and the locking section is formed at the end connected to the locking rod 32. In addition to locking with the locking rod 32, the locking section can also be a structure such as a locking block or a locking buckle that cooperates with the locking part 21 of the second locking piece 20.

[0072] Based on the structure of setting the avoidance recess 22, in the folded and unlocked state, the locking arm 31 will rebound under the elastic stress of the first elastic component 34. After the locking arm 31 rebounds, the locking rod 32 can be located in the avoidance recess 22 to prevent it from protruding from the second locking piece 20.

[0073] As an optional implementation, there are two first locking plates 10, which are spaced apart. There are also two locking arms 31 and two first elastic members 34. The two locking arms 31 are rotatably connected to the outside of the first locking plates 10 respectively. The locking rod 32 passes through the first locking plates 10 and is connected between the two locking arms 31. The second locking plate 20 is rotatably connected between the two first locking plates 10.

[0074] In other words, the second locking piece 20 can rotate between the two first locking pieces 10, and the two locking arms 31 of the locking member 30 can be mounted on the outside of the two first locking pieces 10. After the locking rod 32 is connected by the two locking arms 31, the two locking arms 31 can limit the locking rod 32 to the left and right to prevent the locking rod 32 from swinging to the left and right. This can limit the swing position of the locking rod 32 to the middle of the two first locking pieces 10. The second locking piece 20, which is provided with the locking part 21, is located between the two locking pieces. Therefore, when the locking arms 31 of the locking member 30 rotate, the locking rod 32 can accurately rotate toward the locking part 21 in the middle position to achieve locking. This makes the locking position more accurate and less prone to deviation, thus enabling quick locking or unlocking.

[0075] As an optional implementation, the locking mechanism further includes a rotating shaft 50, which passes through one of the first locking pieces 10, the second locking piece 20 and the other second locking piece 20 in sequence, and is rotatably connected to the second connecting rod 70; the second locking piece 20 is rotatably engaged with the rotating shaft 50, that is, the two locking pieces and the second locking piece 20 are rotatably connected by the same rotating shaft 50.

[0076] More specifically, the unlocking component 40 also includes an unlocking knob and a second elastic component 42. The unlocking knob is rotatably connected to the outside of the second connecting rod 70. The unlocking part includes an unlocking rod 41 disposed inside the unlocking knob. One end of the second elastic component 42 is disposed inside the unlocking knob, and the other end of the second elastic component 42 is connected to the second connecting rod 70. Based on this structure, by rotating the unlocking knob, the unlocking knob drives the unlocking rod 41 to rotate. During the rotation, the unlocking rod 41 can push against the locking section of the locking component 30, thereby achieving unlocking. The second elastic component 42 allows the unlocking knob to automatically reset after unlocking, eliminating the need for repeated rotation for reset. Therefore, each time unlocking is completed, the unlocking knob can reset, driving the unlocking rod 41 to automatically return to the position where unlocking is needed next, without lingering in the unlocked position, thus not affecting the swing reset of the locking arm 31.

[0077] Furthermore, it only requires one turn of the unlock knob during operation, making it convenient for people with disabilities to use.

[0078] Of course, the first elastic component 34 and the second elastic component 42 mentioned above can both be selected as torsion spring structures or tension springs in the prior art.

[0079] Example 7,

[0080] A wheelchair includes a seat, leg rests, and a folding assembly as described in any of the above embodiments (see...). Figure 1-10 The first connecting rod 60 of the folding assembly is connected to the seat, and the second connecting rod 70 of the folding assembly is connected to the leg rest.

[0081] This allows the leg frame to rotate relative to the seat, enabling it to be folded or unfolded. When in normal use, the second connecting rod 70 of the leg frame rotates downward relative to the first connecting rod 60, allowing the leg frame to unfold.

[0082] At this time, the locking part 21 of the second locking plate 20 inside the second connecting rod 70 is in the top locking position. The user can rotate the locking member 30 on the first locking plate 10 while sitting in the wheelchair, causing the locking section of the locking member 30 to rotate toward the second locking plate 20. Since the locking part 21 of the second locking plate 20 is in the locking position, the locking section can be locked inside the second locking plate 20 when it rotates toward the second locking plate 20. The second locking plate 20 remains locked, so the second connecting rod 70 connected to the second locking plate 20 can also remain locked. In this state, the leg frame and seat can remain locked in the unfolded state.

[0083] When folding, by rotating the locking member 30, the locking section of the locking member 30 is driven away from the locking part 21 of the second locking piece 20. After disengaging from the locking part 21, the legs can be rotated directly. The rotation of the legs can drive the second locking piece 20 of the second connecting rod 70 to rotate. The second locking piece 20 can then rotate the locking part 21 to the unlocked position, which is offset from the locked position. At this time, even if the locking member 30 is accidentally touched by hand, it will not be locked because the locking part 21 is not in the locked position. This makes it convenient to unfold the legs directly afterward, and the operation is convenient.

[0084] It should be noted that when in the folded state, the legs can be rotated directly to touch the ground and kept folded.

[0085] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A folding assembly for a wheelchair, characterized in that, include, First connecting rod; The second connecting rod is rotatably connected to the first connecting rod. A locking mechanism, comprising a first locking plate, a second locking plate, a locking element, and an unlocking element, wherein the first locking plate is connected to the first connecting rod, the second locking plate is connected to the second connecting rod and rotatably engages with the first locking plate, and the locking part has a locked position and an unlocked position after the second locking plate is rotated; The locking component includes a connecting section and a locking section. The connecting section is rotatably connected to the first locking piece to move the locking section closer to or away from the second locking piece. The locking section is used to rotate near the locking part when the locking part is in the locking position and lock into the locking part.

2. The folding assembly of the wheelchair according to claim 1, characterized in that, The second locking piece has a locking notch, which engages with the locking segment when the locking segment approaches; the locking notch forms the locking part.

3. The folding assembly of the wheelchair according to claim 1, characterized in that, The second locking piece is provided with a relief recess, which is used to avoid the locking segment when the locking part is in the unlocked position.

4. The folding assembly of the wheelchair according to claim 1, characterized in that, The first locking piece is provided with a guide groove, which extends in the rotation direction of the locking member; the locking section is provided with a guide post; the guide post slides through the guide groove.

5. The folding assembly of the wheelchair according to any one of claims 1-4, characterized in that, The locking mechanism further includes an unlocking component, which is rotatably mounted on the second connecting rod. The unlocking component has an unlocking part that is offset from the rotation axis of the unlocking component. The unlocking part moves closer to or further away from the locking part when the unlocking part rotates.

6. The folding assembly of the wheelchair according to claim 5, characterized in that, The unlocking component also includes a connecting shaft, which passes through the first locking plate and is rotatably mounted on the second locking plate. The locking component includes a locking arm, a locking rod, and a first elastic component. One end of the locking arm is rotatably connected to the first locking plate via a swing shaft, and the other end of the locking arm is provided with the locking rod. One end of the elastic component is connected to the swing shaft, and the other end of the elastic component is connected to the locking arm. The elastic component is used to provide an elastic stress that drives the locking arm toward swinging. The unlocking part is used to rotate and push the locking arm near the locking member.

7. The folding assembly of the wheelchair according to claim 6, characterized in that, There are two first locking plates, which are spaced apart; there are also two locking arms and two first elastic components, and the two locking arms are rotatably connected to the outside of the first locking plates; the locking rod passes through the first locking plates and is connected between the two locking arms. The second locking piece is rotatably connected between the two first locking pieces.

8. The folding assembly of the wheelchair according to claim 7, characterized in that, The locking mechanism further includes a rotating shaft that passes sequentially through one of the first locking plates, the second locking plate, and the other second locking plate, and is rotatably connected to the second connecting rod; the second locking plate is rotatably engaged with the rotating shaft.

9. The folding assembly of the wheelchair according to claim 5, characterized in that, The unlocking component further includes an unlocking knob and a second elastic component. The unlocking knob is rotatably connected to the outside of the second connecting rod. The unlocking part includes an unlocking rod disposed inside the unlocking knob. One end of the second elastic component is disposed inside the unlocking knob, and the other end of the second elastic component is connected to the second connecting rod.

10. A wheelchair, characterized in that, It includes a seat, a leg rest, and a folding assembly according to any one of claims 1-9, wherein the first connecting rod is connected to the seat, and the second connecting rod is connected to the leg rest.

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