Crutch chair

Abstract

The invention relates to a crutch chair, which comprises a support assembly and a seat assembly, the support assembly comprises a support, a sliding piece, a main rod and two auxiliary rods, the main rod and the auxiliary rods respectively penetrate through and are rotatably connected to the support, and the two opposite ends of each of the main rod and the auxiliary rods respectively extend out of the support; the sliding part is in sliding fit with the main rod and used for driving the supporting assembly to be switched between the folded state and the unfolded state, the two auxiliary rods are folded to the main rod in the folded state, and the two auxiliary rods are symmetrically located on the two opposite sides of the main rod in the unfolded state. The chair surface assembly comprises a main chair surface and two auxiliary chair surfaces, the two auxiliary chair surfaces are rotationally connected to the two opposite sides of the main chair surface in a one-to-one correspondence mode, and in the process that the supporting assembly is switched from the folded state to the unfolded state, the sliding piece drives the main chair surface to be unfolded, and the auxiliary chair surfaces are driven by the main chair surface to be unfolded. The ends, close to the chair face assembly, of the two auxiliary rods support the two auxiliary chair faces in a one-to-one correspondence mode. The crutch chair has high supporting stability in an unfolded state.

Description

Technical Field

[0001] The invention relates to the technical field of daily necessities, in particular to a crutch chair. Background Art

[0002] As a daily necessity for the elderly, the cane chair generally has two states: folded and unfolded. In the folded state, it can support the cane; in the unfolded state, it can provide the elderly with a seat and rest function.

[0003] In the related art, as disclosed in patent CN114903262B, the support of the crutch chair is achieved by a positioning member and two support rods, and the positioning member and the two support rods are respectively passed through the carrier. In the unfolded state, the deflection angles of the two support rods relative to the main rod are inconsistent, and the forces on the two support rods are different. This force difference can easily lead to unstable load-bearing. Summary of the invention

[0004] An embodiment of the present invention provides a crutch chair to improve the support stability of the crutch chair in an unfolded state.

[0005] A crutch chair, comprising:

[0006] A support assembly, comprising a support, a sliding member, a main rod and two auxiliary rods, wherein the main rod and the auxiliary rods are respectively passed through and rotatably connected to the support, and opposite ends of each of the main rod and the auxiliary rods extend out of the support respectively; the sliding member is slidably matched with the main rod and is used to drive the support assembly to switch between a folded state and an extended state, wherein the two auxiliary rods are close to the main rod in the folded state, and the two auxiliary rods are symmetrically located at opposite sides of the main rod in the extended state; and

[0007] The seat assembly includes a main seat and two auxiliary seat, the two auxiliary seat are rotatably connected to the opposite sides of the main seat, and the main seat is rotatably connected to the sliding member. During the switching of the support assembly from a folded state to an unfolded state, the sliding member drives the main seat to open, and the main seat drives the auxiliary seat to open, and one end of the two auxiliary rods close to the seat assembly supports the two auxiliary seat.

[0008] In the above crutch chair, in the unfolded state, the two auxiliary rods respectively form an angle with the main rod and are symmetrically located on the opposite sides of the main rod. After the user sits on the opened seat assembly, the force levels of the two auxiliary rods on both sides of the main rod are equivalent, that is, the force on the two auxiliary rods is relatively balanced, forming a stable support structure, preventing the problem of unstable support caused by one auxiliary rod being significantly greater than the other auxiliary rod, forming a stable spatial tripod, providing stable support for the user, preventing the support assembly in the unfolded state from easily tipping over, and improving the safety and comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 is a schematic diagram of a crutch chair in an unfolded state according to an embodiment;

[0011] Figure 2 for Figure 1 A schematic diagram of another perspective of the crutch chair shown;

[0012] Figure 3 for Figure 2 Exploded view of the cane chair shown;

[0013] Figure 4 for Figure 3 An enlarged schematic diagram of point A of the crutch chair shown;

[0014] Figure 5 is a schematic diagram of a crutch chair in a folded state according to an embodiment;

[0015] Figure 6 for Figure 5 Exploded view of the cane chair shown;

[0016] Figure 7 for Figure 1 The schematic diagram of the crutch chair after removing part of its structure;

[0017] Figure 8 for Figure 7 Exploded view of the cane chair shown;

[0018] Fig. 9 A schematic diagram of a crutch chair according to an embodiment in a state between an unfolded state and a folded state;

[0019] Fig.10 for Fig. 9 A schematic diagram of another perspective of the crutch chair shown;

[0020] Fig.11 for Figure 1 The schematic diagram of the crutch chair after removing part of its structure;

[0021] Fig.12 for Figure 5 A schematic diagram showing the relative positions of the sliding member, the auxiliary assembly and the seat assembly when the crutch chair is in a folded state;

[0022] Fig.13 for Fig. 9 A schematic diagram of the relative positions of the sliding member, the auxiliary assembly and the seat assembly when the crutch chair is in a state between the unfolded state and the folded state;

[0023] Fig.14 for Fig.13 a schematic diagram of the auxiliary components shown;

[0024] Fig.15 for Figure 2 A schematic diagram showing the relative positions of the sliding member, the auxiliary assembly and the seat assembly when the crutch chair is in an unfolded state;

[0025] Fig.16 for Figure 5 A cross-sectional view of the crutch chair shown in a folded state;

[0026] Fig.17 for Figure 1 A cross-sectional view of the crutch chair shown in the unfolded state;

[0027] Fig.18 An exploded view of the handle and main rod of a crutch chair according to one embodiment;

[0028] Fig.19 for Figure 1 A cross-sectional view of the handle, the main rod and the sliding member when the crutch chair is in the unfolded state;

[0029] Fig. 20 A cross-sectional view of a hook of a crutch chair in an embodiment in a buckled state;

[0030] Fig.21 The present invention is a cross-sectional view of a crutch chair in an embodiment with a hook in an open state.

[0031] Reference numerals:

[0032] Crutch chair 10, support assembly 100, support 110, main body 111, through hole 111a, groove 111b, shaft hole 111c, cover plate 113, snap ring 115, rotating shaft 116, sliding member 120, second clamping hole 120a, hanging hole 120b, protrusion 121, sleeve 123, connecting pin 125, main rod 130, through groove 130a, first clamping hole 130b, first adjustment hole 130c, limiting sleeve 135, auxiliary rod 140, notch 140a, upper angle space 140b, lower angle space 140c, pin 141, torsion spring 143, supporting end 145, handle 150, gripping portion 151, accommodating groove 151a, adjustment sleeve 153, second adjustment hole 153a, auxiliary Hole 153b, inner tube 1531, outer tube 1533, adjustment member 155, hook 157, opening 157a, waist-shaped hole 157b, rotating column 158, first connecting rod 160, swing rod 161, support rod 163, second connecting rod 170, elastic member 180, locking structure 190, button 191, clamping member 193, clamping portion 1931, reset member 195, hanging rope 197, seat surface assembly 200, main seat surface 210, limiting groove 210a, auxiliary seat surface 220, clamping groove 220a, clamping block 221, abutting portion 223, auxiliary assembly 300, first swing arm 310, body 311, guide surface 3111, bearing portion 313, limiting portion 315, second swing arm 320, return member 330 DETAILED DESCRIPTION

[0033] The following detailed description of the preferred embodiment is a preferred mode for implementing the present invention. This description is not intended to be limiting. It is provided to illustrate the general principles of the present invention.

[0034] It should be understood that, in order to facilitate understanding of the present invention, the terms "installed", "connected", "coupled" and "installed" in the following description refer to the connection relationship in the drawings. For example, "connected" may refer to a permanent connection or a detachable connection. In addition, "connected" may also refer to a direct connection or an indirect connection, or a connection through other auxiliary components. Therefore, the above terms should not be a limitation on the actual connection of the elements of the present invention.

[0035] It should be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "upper", "lower", "outer" and "inner" refer to the orientation or positioning relationship in the drawings to facilitate understanding of the present invention, and do not limit the actual position or orientation of the present invention. Therefore, the above terms should not be a limitation on the actual position of the elements of the present invention.

[0036] It should be understood that the terms "first", "second", "one", "an", and "an" in the following description refer to "at least one" or "one or more" in the embodiments. In particular, the term "one" may refer to "one" in one embodiment and to "more than one" in another embodiment. Therefore, the above terms should not be regarded as actual numerical limitations on the elements of the present invention.

[0037] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0038] refer to Figure 1 and Figure 2 The present application discloses a crutch chair 10, including a support assembly 100 and a seat assembly 200. The support assembly 100 includes a support 110, a sliding member 120, a main rod 130 and two auxiliary rods 140, Figure 3 and Figure 4 The main rod 130 and the auxiliary rod 140 are respectively passed through and rotatably connected to the support 110, and opposite ends of each of the main rod 130 and the auxiliary rod 140 extend out of the support 110. For example, the main rod 130 and the support 110 are passed through a rotating shaft, and the auxiliary rod 140 and the support 110 are passed through another rotating shaft, so as to realize the rotatable connection between the main rod 130, the auxiliary rod 140 and the support 110.

[0039] Specifically, the support 110 may include a main body 111 and a cover plate 113 that are detachably connected. The main body 111 is provided with three through holes 111a that are spaced apart. The main rod 130 and the two auxiliary rods 140 are respectively passed through the three through holes 111a and are rotatably connected to the main body 111. The through holes 111a can provide space for the main rod 130 and the auxiliary rod 140 to swing relative to the support 110, but limit the range of motion of the main rod 130 and the auxiliary rod 140, so that the main rod 130 and the two auxiliary rods 140 can be stably maintained in both the expanded state and the retracted state. The main body 111 can be injection molded to improve the molding efficiency, and can have a relatively large wall thickness to improve the stability of the support. During the assembly process, the main rod 130 and the auxiliary rod 140 can first be inserted into the through hole 111a of the main body 111 and the cover plate 113. At this time, the cover plate 113 and the main body 111 can be spaced apart to expose the internal space of the main body 111, so as to facilitate the assembly of the rotating shaft to the main body 111 to realize the rotation connection between the main rod 130, the auxiliary rod 140 and the main body 111. After the main body 111 and the main rod 130 and the auxiliary rod 140 are assembled, the cover plate 113 is used to cover the internal space of the main body 111, for example, the cover plate 113 is reliably fixed to the main body 111 by fasteners such as screws, so as to realize the reliable limitation of the main rod 130 and the auxiliary rod 140 on the support 110, and improve the convenience of assembly.

[0040] In some embodiments, the support 110 may include a snap ring 115, and the cover plate 113 and the main body 111 are enclosed to form a groove 111b extending along the circumference of the main body 111, and the groove bottom of the groove 111b is provided with an axial hole 111c, and the axial hole 111c is used to pass the rotating shaft 116 to realize the rotation connection between the main rod 130, the auxiliary rod 140 and the main body 111. Specifically, in the embodiment of the present application, the main rod 130 is rotatably connected to the main body 111 through a rotating shaft 116, and the two auxiliary rods 140 share a rotating shaft 116 to realize the rotation connection with the main body 111, so that the connection structure of the main rod 130, the auxiliary rod 140 and the main body 111 is relatively simple. The snap ring 115 is limited to the groove 111b and blocks the shaft hole 111c and the rotating shaft 116. The snap ring 115 can be in a circumferentially closed ring shape and can be assembled to the main body 111 before the cover plate 113. The two protruding edges of the groove 111b in the axial direction of the main rod 130, that is, a protruding edge of the main body 111 and the edge of the cover plate 113 can prevent the snap ring 115 from easily falling out of the main body 111. The snap ring 115 can prevent the rotating shaft 116 from easily falling out of the main body 111 and plays a decorative role. During the assembly process of the main rod 130, the auxiliary rod 140 and the support 110, the main rod 130 and the auxiliary rod 140 can be sequentially inserted into the through hole 111a of the main body 111, the snap ring 115 and the cover plate 113, so that the snap ring 115 is reliably limited to the main body 111 and prevented from easily falling out of the main body 111.

[0041] The sliding member 120 may be in the shape of a circumferentially closed cylinder, which is sleeved on the main rod 130 and slidably matched with the main rod 130 and is used to drive the support assembly 100 to switch between the folded state and the unfolded state. Figure 5 and Figure 6 In the folded state, the two auxiliary rods 140 are close to the main rod 130, and the length extension direction of the auxiliary rod 140 is substantially parallel to the length extension direction of the main rod 130. Figure 1 and Figure 2 In the unfolded state, the two auxiliary rods 140 respectively form an angle with the main rod 130 and are symmetrically located on opposite sides of the main rod 130.

[0042] The seat assembly 200 may include a main seat 210 and two auxiliary seat 220, the two auxiliary seat 220 being rotatably connected to opposite sides of the main seat 210 in a one-to-one correspondence, and the main seat 210 is rotatably connected to the sliding member 120. In the process of switching the support assembly 100 from the folded state to the unfolded state, the sliding member 120 drives the main seat 210 to open, and the main seat 210 drives the auxiliary seat 220 to open, and one end of the two auxiliary rods 140 close to the seat assembly 200 supports the two auxiliary seat 220 in a one-to-one correspondence; in the process of switching the support assembly 100 from the unfolded state to the folded state, the sliding member 120 drives the main seat 210 to fold, and the main seat 210 drives the auxiliary seat 220 to fold, and one end of the two auxiliary rods 140 close to the seat assembly 200 can gradually separate from the two auxiliary seat 220.

[0043] It is understandable that in engineering technology, symmetry should not be regarded as a concept in a strict geometric sense, but the existence of engineering errors should be considered. The two auxiliary rods 140 cannot be excluded from the scope of protection of this application just because they are asymmetric within the scope of engineering errors relative to the main rod 130.

[0044] In some embodiments, the main rod 130 and the auxiliary rod 140 are both hollow tubular structures and can be an integral structure, that is, the entire tube is formed in one piece. The main rod 130 and the auxiliary rod 140 can be made of aluminum alloy material, so that the entire crutch chair 10 has a relatively small mass, which is convenient for the elderly to carry, and the main rod 130 and the auxiliary rod 140 have a high structural strength, so as to reliably support the body weight of the elderly in the unfolded state, and ensure safety in use.

[0045] A handle 150 may be provided at one end of the main rod 130. The handle 150 may form a circumferentially closed space, which is convenient for the user to insert the palm and hold the crutch chair 10, so as to facilitate the user to use the crutch chair 10. Figure 5 and Figure 6, the length of the main rod 130 can be greater than the length of the auxiliary rod 140. In the folded state, on the side of the support 110 away from the handle 150, the end of the main rod 130 can slightly protrude from the end of the auxiliary rod 140, and the user can hold the handle 150 and use the end of the main rod 130 away from the handle 150 to contact the ground to support the body and play the role of a crutch; the end of the auxiliary rod 140 close to the handle 150 can be wrapped by the space enclosed by the main seat surface 210 and the auxiliary seat surface 220, which can not only reduce the width of the entire crutch chair 10, making it convenient to use as a crutch, but also prevent the end of the auxiliary rod 140 close to the handle 150 from easily separating from the main rod 130 and causing inconvenience to use. Further, the end of the main rod 130 away from the handle 150 can be provided with a rubber sleeve or a silicone sleeve, and the rubber sleeve or the silicone sleeve can be used to contact the ground to reduce the impact and increase the contact area, thereby improving the stability of the support and the comfort of use.

[0046] For example, reference Figure 5 and Figure 6 , one of the two auxiliary seat surfaces 220 may also be provided with a block 221, and the other may be provided with a slot 220a. In the folded state, the block 221 engages with the slot 220a, so that the main seat surface 210 and the auxiliary seat surface 220 form a rectangular box-shaped space, and the end of the auxiliary rod 140 close to the seat surface assembly 200 is stored in the space enclosed by the main seat surface 210 and the auxiliary seat surface 220. This structure can stably maintain the folded state of the crutch chair 10, and prevent the support assembly 100 and the seat surface assembly 200 from being easily opened when the user uses the crutch chair 10 as a crutch. Of course, in other embodiments, the two auxiliary seat surfaces 220 may be buckled by means of magnetic attraction, Velcro bonding, etc., so that the folded state of the crutch chair 10 can be stably maintained.

[0047] Also refer to Figure 7 and Figure 8 In the unfolded state, the two auxiliary rods 140 are cross-arranged at the support 110. The two auxiliary rods 140 can be provided with a pin 141 at the cross position to realize the rotation connection of the two auxiliary rods 140. Further, the two auxiliary rods 140 can be provided with notches 140a arranged opposite to each other, and the notches 140a are used to realize the mutual embedding of the two auxiliary rods 140, so that the rotation of the two is more stable and the rotation range is limited. Further, refer to Figure 8 The pin shaft 141 can be sleeved with a torsion spring 143, and the two free ends of the torsion spring 143 abut against the two auxiliary rods 140 one by one, so that the two auxiliary rods 140 tend to be spread apart from each other, making it easier for the crutch chair 10 in the folded state to be spread apart to the unfolded state.

[0048] Further reference Figure 7In the unfolded state, the two auxiliary rods 140 form an upper angle space 140b and a lower angle space 140c, and the main rod 130 is disposed in one of the upper angle space 140b and the lower angle space 140c. Figure 7 Taking the main rod 130 shown in the figure as passing through the lower angle space 140c, since the main rod 130 and the auxiliary rod 140 are respectively rotatably connected to the support 110, the position of the support 110 relative to the main rod 130 in the axial direction of the main rod 130 remains basically unchanged, and the rotation of the auxiliary rod 140 relative to the support 110 makes it swing relative to the main rod 130. The auxiliary rod 140 can have a suitable relative movement space with the support 110 in the axial direction, so as to facilitate the switching of the support assembly 100 between the folded state and the unfolded state. In the unfolded state, the two auxiliary rods 140 form an angle with the main rod 130 respectively and are symmetrically located on opposite sides of the main rod 130. The triangle formed by the end of the main rod 130 away from the handle 150 and the line connecting the ends of the two auxiliary rods 140 away from the handle 150 can be an isosceles triangle. After the user sits on the opened seat assembly 200, the force levels of the two auxiliary rods 140 on both sides of the main rod 130 are equivalent, that is, the force on the two auxiliary rods 140 is relatively balanced, and the center of gravity of the user support can fall within the symmetry axis of the isosceles triangle, that is, the projection of the main rod 130, forming a stable support structure, preventing the problem of unstable support caused by the force on one auxiliary rod 140 being significantly greater than that on the other auxiliary rod 140, thereby ensuring the stability of the support and improving the safety performance of use. Moreover, after the user sits on the opened chair seat assembly 200, since the main rod 130 is located in the lower angle space 140c, the intersection of the two auxiliary rods 140 tends to approach the main rod 130, and the main rod 130 also tends to approach the intersection of the auxiliary rods 140 at the support 110. The dimensions of the main rod 130, such as width and wall thickness, can usually be larger than those of the auxiliary rod 140, and have a stronger bearing capacity. The extrusion force generated by this tendency to approach each other can be borne by the support 110 and the main rod 130, forming a stable spatial tripod, providing stable support for the user, preventing the support assembly 100 in the unfolded state from easily tipping over, and improving the safety and comfort of use.

[0049] Continue to refer Figure 7 and Figure 8 , and combined with Fig. 9The support assembly 100 may include a first link 160 and two second links 170. One end of the first link 160 is rotatably connected to the main rod 130, and the other end of the first link 160 is connected to the main seat surface 210. The connection position between the first link 160 and the main seat surface 210 is spaced apart from the connection position between the main seat surface 210 and the sliding member 120. In the folded state, the first link 160 and the two second links 170 are also stored in the space enclosed by the main seat surface 210 and the auxiliary seat surface 220, so that the structure of the crutch chair 10 in the folded state is more compact, avoiding the width dimension being too large and reducing the convenience of use. The connection position between the first link 160 and the main rod 130 is located between the sliding member 120 and the support 110. One end of the two second connecting rods 170 is rotatably connected to the sliding member 120, and the other ends of the two second connecting rods 170 are rotatably connected to the two auxiliary rods 140 in a one-to-one correspondence. The auxiliary rod 140 has a support end 145 that supports the auxiliary seat surface 220 in the unfolded state, and the connection position of the second connecting rod 170 and the auxiliary rod 140 is located between the support 110 and the support end 145. The connection position of the second connecting rod 170 and the sliding member 120 is located between the connection position of the sliding member 120 and the main seat surface 210 and the connection position of the first connecting rod 160 and the main rod 130. In other words, the connection position of the sliding member 120 and the main seat surface 210, the connection position of the second connecting rod 170 and the sliding member 120, the connection position of the first connecting rod 160 and the main rod 130, and the support 110 are arranged in sequence along the axial extension direction of the main rod 130.

[0050] Recombination Figure 6 as well as Fig. 9 , Fig.10 , the sliding member 120 is closer to the handle 150 in the folded state than in the unfolded state. When the support assembly 100 switches from the folded state to the unfolded state, the sliding member 120 slides along the main rod 130 toward the support 110, and the second connecting rod 170 pushes the end of the auxiliary rod 140 close to the seat assembly 200 away from the main rod 130. The supporting end 145 of the auxiliary rod 140 can abut against the auxiliary seat surface 220 to drive the free end of the auxiliary seat surface 220 to gradually move away from the support 110, thereby causing the free end of the main seat surface 210 to gradually move away from the support 110. The main seat surface 210 drives the first connecting rod 160 to swing relative to the main rod 130, and the first connecting rod 160 swings relative to the main seat surface 210 until the main seat surface 210 is supported in the unfolded state ( Figure 2 ).

[0051] Further, refer to Fig.11The first connecting rod 160 includes a swing rod 161 rotatably connected to the main seat surface 210, and a support rod 163 rotatably connected to the swing rod 161, and the support rod 163 is rotatably connected to the main rod 130. The main seat surface 210 is provided with a limit groove 210a for limiting the rotation range of the swing rod 161. When the support assembly 100 switches between the folded state and the unfolded state, the swing rod 161 drives the support rod 163 to swing relative to the main seat surface 210. During the switching of the support assembly 100 between the folded state and the unfolded state, that is, during the process in which the free ends of the auxiliary seat surface 220 and the main seat surface 210 approach and move away from the main rod 130, the distances between the connection point (first connection point) between the swing rod 161 and the main seat surface 210 and the connection point (second connection point) between the support rod 163 and the main rod 130 are changed. The use of the first connecting rod 160 of a fixed length will cause the main seat surface 210 to be opened poorly, while the setting of the swing rod 161 and the support rod 163 can form a movable joint, such as Fig. 9 As shown, the first connecting rod 160 can adapt to the change in the distance between the first connecting point and the second connecting point, and adapt to the folding and unfolding movement of the main seat surface 210, so that the folding and unfolding of the main seat surface 210 are smoother. In the unfolded state, the swing rod 161 and the support rod 163 can jointly support the main seat surface 210, so that the seat surface assembly 200 is stably supported in the unfolded state. Of course, it can be understood that the swing rod 161 of the first connecting rod 160 can be omitted, and the opposite ends of the support rod 163 can be respectively rotatably connected to the main rod 130 and the main seat surface 210, that is, the first connecting rod 160 can also realize the opening of the main seat surface 210 through a single rod combined with the auxiliary operation of the user.

[0052] refer to Fig.12 , Fig.13 and Fig.14 In some embodiments, the cane chair 10 may include an auxiliary component 300, and the auxiliary component 300 includes a first swing arm 310 and a second swing arm 320 rotatably connected to the main seat surface 210. The sliding member 120 has a protrusion 121, and the two auxiliary seat surfaces 220 respectively have abutment portions 223. In the unfolded state, the first swing arm 310, the second swing arm 320 and the abutment portion 223 are all located on the side of the seat surface assembly 200 away from the support surface (i.e., the surface used to support the user's body in the unfolded state), so that the main seat surface 210 and the auxiliary seat surface 220 are used to cover the first swing arm 310, the second swing arm 320 and the abutment portion 223 in the unfolded state and the folded state, so that the appearance of the cane chair 10 is relatively simple.

[0053] Fig.12 The figure shows the relative positions of the first swing arm 310, the second swing arm 320, the main seat surface 210, and the auxiliary seat surface 220 when the support assembly 100 is in the folded state; Fig.13The relative positions of the first swing arm 310, the second swing arm 320, the main seat surface 210, and the auxiliary seat surface 220 are shown in a certain position between the folded state and the unfolded state; Fig.15 , Fig.15 The diagram shows the relative positions of the first swing arm 310 , the second swing arm 320 and the main seat surface 210 , and the auxiliary seat surface 220 in the unfolded state.

[0054] During the process of switching the support assembly 100 from the folded state to the unfolded state, the protrusion 121 presses against the first swing arm 310 and the second swing arm 320 and drives the first swing arm 310 and the second swing arm 320 to rotate relative to the main seat surface 210. The first swing arm 310 presses against the supporting portion 223 on one side, and the second swing arm 320 presses against the supporting portion 223 on the other side, so that the two auxiliary seat surfaces 220 are spread apart relative to the main seat surface 210. Since the main seat surface 210, the auxiliary seat surface 220, the main rod 130, and the auxiliary rod 140 can be considered to be roughly parallel in the closed state, when the sliding member 120 slides along the main rod 130 toward the support 110, it is relatively difficult to open the auxiliary seat surface 220 by the lateral force of the supporting end 145 of the auxiliary rod 140 in the initial stage of unfolding. It is often necessary to manually pull the free end of the main seat surface 210 away from the main rod 130 to successfully pass the initial stage of unfolding. However, since the user usually holds the main rod 130 or the handle 150 with one hand and pushes the sliding member 120 with the other hand, it is difficult to take care of the main seat surface 210, which may cause the opening to be not smooth. The auxiliary component 300 can assist the auxiliary seat surface 220 in opening relative to the main seat surface 210, improve the smoothness of the opening of the seat surface component 200, and thus improve the convenience of use.

[0055] Specifically, refer to Fig.13 and Fig.14 The auxiliary component 300 may include a return member 330 connected to the main seat surface 210. The return member 330 is connected to at least one of the first swing arm 310 and the second swing arm 320. When the support component 100 switches from the unfolded state to the folded state, the return member 330 drives the first swing arm 310 and the second swing arm 320 to reset, that is, the first swing arm 310 and the second swing arm 320 return to their initial positions to facilitate the next unfolding of the seat surface component 200. The return member 330 is not limited to a spring or a torsion spring, but may also be a structure such as an elastic column. Fig.14Taking the spring shown as an example, the spring can be in a natural unstretched state in the folded state; in the process that the protrusion 121 of the sliding member 120 drives the first swing arm 310 and the second swing arm 320 to swing relative to the main seat surface 210, that is, in the process that the support assembly 100 switches from the folded state to the expanded state, the spring is stretched and accumulates elastic force, so that the first swing arm 310 and the second swing arm 320 tend to return to the initial position; in the process that the support assembly 100 switches from the expanded state to the folded state, the spring can release elastic potential energy and drive the first swing arm 310 and the second swing arm 320 to return to the initial position.

[0056] In particular, in some embodiments, the first swing arm 310 and the second swing arm 320 can mesh with each other through incomplete gears to achieve synchronous swinging of the two relative to the main seat surface 210, thereby achieving synchronous movement of the two auxiliary seat surfaces 220, thereby improving convenience of use.

[0057] The structures and working principles of the first swing arm 310 and the second swing arm 320 are similar, and the first swing arm 310 is used as an example for description. Fig.14 The first swing arm 310 includes an integrally formed body 311 and a bearing portion 313. The body 311 is roughly rectangular. The bearing portion 313 is connected to one end of the body 311 and is arranged obliquely with respect to the length extension direction of the body 311. The body 311 has a guide surface 3111 at the other end thereof. The guide surface 3111 is a plane and is arranged obliquely with respect to the length direction of the body 311. The body 311 is rotatably connected with the main seat surface 210. For example, the main seat surface 210 is provided with a rotation axis perpendicular to its supporting surface (i.e., the surface used to support the user's body in the unfolded state), and the body 311 is provided with a hole rotatably matched with the rotation axis. In the process of switching the support assembly 100 from the folded state to the unfolded state, the protrusion 121 presses the bearing portion 313 and drives the body 311 to rotate relative to the main seat surface 210, and the guide surface 3111 presses the abutting portion 223 corresponding to the first swing arm 310 to drive the corresponding secondary seat surface 220 to rotate relative to the main seat surface 210. In some embodiments, the supporting portion 223 has a plane that matches the guide surface 3111. For example, the guide surface 3111 is inclined at 45 degrees to 60 degrees relative to the length direction of the main body 311, and the matching plane of the supporting portion 223 is inclined at a substantially equal angle relative to the width direction of the secondary seat surface 220. Thus, when the support assembly 100 is fully unfolded, the guide surface 3111 is fitted with the matching plane, so that the surfaces of the main seat surface 210 and the secondary seat surface 220 for contacting the user's body are maintained in a relatively flat state.

[0058] Further, combined with Fig.15The first swing arm 310 may further include a limiting portion 315 integrally formed with the body 311, the limiting portion 315 protruding from the guide surface 3111 along the length extension direction of the body 311, and in the process of the protruding portion 121 pressing the bearing portion 313, the protruding portion 121 limits the movement range of the body 311 to prevent the first swing arm 310 from moving too far and causing failure in supporting the auxiliary seat surface 220.

[0059] refer to Fig.16 and Fig.17 In some embodiments, the crutch chair 10 may further include an elastic member 180 disposed in the main rod 130, one end of the elastic member 180 is connected to the sliding member 120, and the other end of the elastic member 180 is connected to the main rod 130. Fig.16 ) is larger than the elastic deformation in the unfolded state ( Fig.17 ) to drive the sliding member 120 to slide along the main rod 130 in the folded state, and then switch to the unfolded state. Fig.17 , the main rod 130 may be provided with a through slot 130a, the sliding member 120 includes a sleeve 123 and a connecting pin 125 connected to the sleeve 123, and the protrusion 121 is integrally formed on the sleeve 123. The sleeve 123 is slidably sleeved on the main rod 130, the second connecting rod 170 and the main seat surface 210 are respectively rotatably connected to the sleeve 123, the connecting pin 125 is inserted into the through slot 130a, and the two ends of the connecting pin 125 can be riveted into a structure with a width greater than the width of the through slot 130a to prevent the connecting pin 125 from slipping out of the through slot 130a. One end of the elastic member 180 is connected to the connecting pin 125, and the other end is connected to the main rod 130. In the process of the sleeve 123 sliding along the main rod 130, the connecting pin 125 slides along the through slot 130a, thereby realizing the elastic expansion and contraction of the elastic member 180. Of course, it is understandable that the elastic member 180 and the associated through slot 130a and connecting pin 125 may be omitted. In the default state, the user may also switch between the expanded state and the folded state through manual operation.

[0060] Furthermore, the crutch chair 10 may include a locking structure 190 movably connected to the handle 150. In the folded state, the locking structure 190 locks the sliding member 120 to the main rod 130; the locking structure 190 can also unlock the sliding member 120 to switch to the unfolded state. Specifically, the locking structure 190 includes a button 191 movably connected to the handle 150 and a clamping member 193. The clamping member 193 has a protruding clamping portion 1931 at one end close to the support 110. Fig.18 and Fig.19, the main rod 130 is provided with a first clamping hole 130b, and the sliding member 120 is provided with a second clamping hole 120a. In the folded state, the first clamping hole 130b is connected with the second clamping hole 120a to penetrate the clamping portion 1931, so that the sliding member 120 is locked to the main rod 130. When the user presses the button 191, the clamping portion 1931 can be driven to withdraw from the second clamping hole 120a to release the lock of the sliding member 120. In other words, in the folded state, the sliding member 120 can be locked to the main rod 130 by using the clamping portion 1931 penetrating the first clamping hole 130b and the second clamping hole 120a, so that the support assembly 100 is stably maintained in the folded state, which is used to realize the crutch function.

[0061] In some embodiments, the locking structure 190 may further include a reset member 195 that abuts against the main rod 130 and the clamping member 193. After the second clamping hole 120a moves from the misaligned state to the aligned state relative to the first clamping hole 130b, the reset member 195 drives the clamping portion 1931 to pass through the second clamping hole 120a, thereby realizing the automatic clamping of the clamping portion 1931 and the sliding member 120. The reset member 195 is not limited to a spring, and may also be a spring sheet or an elastic column. In some embodiments, the reset member 195 is provided corresponding to the button 191, and may also be used to reset the button 191.

[0062] When the user needs to use the crutch chair 10 as a seat, after unlocking the two auxiliary seat surfaces 220, the button 191 is pressed, and the button 191 drives the clamping portion 1931 to withdraw from the second clamping hole 120a. Under the pulling force of the elastic member 180, the sliding member 120 automatically slides down along the main rod 130, and the two second connecting rods 170 support the free ends of the two auxiliary seat surfaces 220 and the free end of the main seat surface 210 connected to the auxiliary seat surfaces 220 away from the main rod 130 through the two auxiliary rods 140. The auxiliary component 300 drives the two auxiliary seat surfaces 220 to open relative to the main seat surface 210, and the main seat surface 210 drives the support rod 163 to swing relative to the main rod 130 through the rocker rod 161 to support the main seat surface 210 until the seat surface assembly 200 is opened to the unfolded state. Of course, it is understandable that the locking structure 190 may be defaulted. When the locking structure 190 is defaulted or invalid, the user may manually operate to switch between the folded state and the unfolded state.

[0063] Continue to refer Fig.17In some embodiments, the support rod 163 can be rotatably connected to the main rod 130 through the limiting sleeve 135. For example, the limiting sleeve 135 is sleeved on the main rod 130 and fixed relative to the position of the main rod 130. The width of the limiting sleeve 135 is greater than the width of the main rod 130, and the inner hole width of the sliding member 120 is smaller than the width of the limiting sleeve 135. When the sliding member 120 slides down along the main rod 130, the sliding member 120 can abut against the limiting sleeve 135, and the limiting sleeve 135 can limit the sliding movement range of the sliding member 120 on the main rod 130, while the handle 150 and the locking structure 190 can limit the sliding movement range of the sliding member 120 along the main rod 130. For example, when the sliding member 120 slides down along the main rod 130 and abuts against the limiting sleeve 135, the support assembly 100 reaches the unfolded state; when the sliding member 120 slides up along the main rod 130 and locks with the locking structure 190, the support assembly 100 reaches the folded state.

[0064] When the user needs to fold the support assembly 100, that is, to switch the support assembly 100 from the unfolded state to the folded state, the user can hold the sliding member 120 and pull it up along the main rod 130, so that the connection position between the second connecting rod 170 and the sliding member 120 moves up along the main rod 130 until the second clamping hole 120a of the sliding member 120 is engaged with the clamping portion 1931 of the locking structure 190, so that the support assembly 100 reaches the folded state. During this process, the sliding member 120 pulls the ends of the two auxiliary rods 140 close to the seat assembly 200 (i.e., the supporting ends 145) toward the main rod 130, and the extrusion effect of the protrusion 121 on the sliding member 120 on the first swing arm 310 and the second swing arm 320 is reduced, and the free end of the main seat surface 210 gradually approaches the main rod 130, and the end of the support rod 163 away from the main rod 130 is driven by the swing rod 161 to gradually approach the main rod 130 on the side close to the handle 150; under the action of the return member 330, the first swing arm 310 and the second swing arm 320 are relatively close to the main seat surface. 210 rotates and gradually returns to the initial position, and the supporting force of the auxiliary rod 140 on the auxiliary seat surface 220 gradually decreases. Under the action of gravity, the two auxiliary seat surfaces 220 will rotate relative to the main seat surface 210 and move closer to the main rod 130; the elastic member 180 in the main rod 130 connected to the main rod 130 and the sliding member 120 is stretched and accumulates elastic potential energy, so that the sliding member 120 and the clamping portion 1931 are reliably engaged, so that the support assembly 100 is stably maintained in the folded state; the user can then buckle the two auxiliary seat surfaces 220, so that the seat surface assembly 200 is also stably maintained in the folded state.

[0065] Further reference Fig.16 , and can be combined with Figure 1 , Figure 7In some embodiments, in a direction perpendicular to the length extension of the main rod 130, the sliding member 120 has hanging holes 120b on opposite sides, and the hanging holes 120b are used to connect the hanging rope 197 or hang other items. In the embodiment of the present application, the hanging hole 120b is located at the end of the sliding member 120 away from the support 110, and is connected to the hanging rope 197. When the support assembly 100 is in the unfolded state, the user can pull the sliding member 120 upward through the hanging rope 197 to improve the convenience of use. Of course, when the support assembly 100 is in the folded state, the hanging rope 197 can be used to hang on a hook or other position to facilitate the user to place the crutch chair 10.

[0066] Continue to refer Fig.18 and Fig.19 In some embodiments, the handle 150 may include a grip portion 151, an adjustment sleeve 153 connected to the grip portion 151, and an adjustment member 155 detachably connected to the adjustment sleeve 153. The main rod 130 is inserted through the adjustment sleeve 153 and is provided with at least two first adjustment holes 130c arranged at intervals along the axial direction of the main rod 130. The adjustment sleeve 153 is provided with a second adjustment hole 153a. The adjustment member 155 is inserted through the second adjustment hole 153a and one of the first adjustment holes 130c, so that the positions of the main rod 130 and the handle 150 are relatively fixed. After the adjustment member 155 is removed from the second adjustment hole 153a, the grip portion 151 can drive the adjustment sleeve 153 to move relative to the main rod 130, so that the second adjustment hole 153a is aligned with any of the other first adjustment holes 130c, so as to be used to insert the adjustment member 155 and adjust the relative position of the grip portion 151 and the main rod 130. The adjustment member 155 can be a bolt, or a similar part with a thread, which can be inserted into the first adjustment hole 130c and the second adjustment hole 153a to achieve the axial limitation of the handle 150 on the main rod 130, so that the distance between the gripping portion 151 and the end of the main rod 130 away from the handle 150 can be adjusted, that is, the overall length of the main rod 130 and the handle 150 can be adjusted, so as to adapt to people of different heights and improve the comfort and convenience of use.

[0067] Specifically, the adjustment sleeve 153 may include an inner cylinder 1531 connected to the gripping portion 151, and an outer cylinder 1533 connected to the gripping portion 151 and sleeved with the inner cylinder 1531. The adjustment piece 155 is detachably connected to the outer cylinder 1533 and the inner cylinder 1531. The end of the main rod 130 close to the handle 150 is passed between the inner cylinder 1531 and the outer cylinder 1533. The outer cylinder 1533 has a second adjustment hole 153a, and the inner cylinder 1531 has an auxiliary hole 153b aligned with the second adjustment hole 153a. The adjustment piece 155 is passed through the auxiliary hole 153b, the second adjustment hole 153a and one of the first adjustment holes 130c, so that the positions of the main rod 130 and the handle 150 are relatively fixed. The structural setting of the adjustment member 155 passing through the auxiliary hole 153b and the second adjustment hole 153a can enable the adjustment member 155 to be supported by the hole walls of the auxiliary hole 153b and the second adjustment hole 153a, forming a more stable support structure, thereby improving the limiting stability and reliability of the adjustment sleeve 153 on the main rod 130.

[0068] Since the positions of the inner cylinder 1531 and the outer cylinder 1533 relative to the main rod 130 are adjustable, in some embodiments, the button 191 of the locking structure 190 is arranged on the outer cylinder 1533 and remains in an axial position of the outer cylinder 1533. The clamping member 193 of the locking structure 190 is connected to the gripping portion 151 and can swing in a small range relative to the gripping portion 151 to exit the second clamping hole 120a of the sliding member 120 or enter the second clamping hole 120a. The first clamping hole 130b on the main rod 130 can extend along the axial direction of the main rod 130 to form a narrow and long groove structure. When the main rod 130 moves axially relative to the handle 150, the clamping portion 1931 moves along the narrow and long first clamping hole 130b and remains in the first clamping hole 130b, ensuring that the locking structure 190 can lock the sliding member 120 in time.

[0069] refer to Fig. 20 and Fig.21 In some embodiments, the handle 150 may further include a hook 157 connected to the grip portion 151. The grip portion 151 is provided with a receiving groove 151a. The bottom of the receiving groove 151a is provided with a rotating column 158. The rotating column 158 may be integrally formed with the grip portion 151. One end of the hook 157 is provided with an opening 157a for inserting the rotating column 158 and a waist-shaped hole 157b connected to the opening 157a. The width of the opening 157a may be smaller than the diameter of the rotating column 158. During the assembly of the hook 157 and the grip portion 151, the hook 157 passes over the rotating column 158 through the deformation of the opening 157a, and the rotating column 158 is reliably confined in the waist-shaped hole 157b. The hook 157 has a snap-on state and an open state relative to the grip portion 151. In the snap-on state, the hook 157 is snap-on to the receiving groove 151a and the rotating column 158 is abutted against one end of the waist-shaped hole 157b. Fig. 20In the open state, the end of the hook 157 away from the rotating column 158 is separated from the gripping portion 151 and forms a hanging space with the gripping portion 151, and the rotating column 158 is pressed against the other end opposite to the waist-shaped hole 157b, as shown in FIG. Fig.21 As shown. The waist-shaped hole 157b cooperates with the rotating column 158, so that the hook 157 can be hung on the rotating column 158 through one end of the hole wall of the waist-shaped hole 157b when in the open state, so that the hook 157 and the gripping portion 151 can reliably hang the entire crutch chair 10 on a wall or other positions; when the hook 157 switches from the open state to the buckled state, the user needs to push the free end of the hook 157 toward the accommodating groove 151a, and at the same time drive the end of the hook 157 where the waist-shaped hole 157b is located to move away from the support 110, and then combined with the buckling structure of the free end of the hook 157 and the accommodating groove 151a, the hook 157 can be stably buckled in the accommodating groove 151a to prevent the hook 157 from easily falling out of the accommodating groove 151a.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A crutch chair, characterized in that: include: A support assembly, comprising a support, a sliding member, a main rod and two auxiliary rods, wherein the main rod and the auxiliary rods are respectively passed through and rotatably connected to the support, and opposite ends of each of the main rod and the auxiliary rods respectively extend out of the support; the sliding member is slidably matched with the main rod and is used to drive the support assembly to switch between a folded state and an extended state, wherein the two auxiliary rods are close to the main rod in the folded state, and the two auxiliary rods are symmetrically located at opposite sides of the main rod in the extended state; as well as The seat assembly includes a main seat and two auxiliary seat, the two auxiliary seat are rotatably connected to the opposite sides of the main seat, and the main seat is rotatably connected to the sliding member. During the switching of the support assembly from a folded state to an unfolded state, the sliding member drives the main seat to open, and the main seat drives the auxiliary seat to open, and one end of the two auxiliary rods close to the seat assembly supports the two auxiliary seat.

2. The crutch chair according to claim 1, characterized in that: The two auxiliary rods are both of an integral structure and are cross-arranged at the support in an unfolded state.

3. The crutch chair according to claim 2, characterized in that: In the unfolded state, the two auxiliary rods form an upper angle space and a lower angle space, and the main rod is inserted into one of the upper angle space and the lower angle space.

4. The crutch chair according to claim 3, characterized in that: The support comprises a main body and a cover plate which are detachably connected. The main body is provided with three through holes which are arranged at intervals. The main rod and the two auxiliary rods are correspondingly passed through the three through holes and are rotatably connected to the main body respectively.

5. The crutch chair according to claim 4, characterized in that: The support includes a retaining ring, and the cover plate and the main body are combined to form a groove extending along the circumference of the main body. The main body is provided with an axial hole at the bottom of the groove, and the axial hole is used to pass a rotating shaft to realize the rotational connection between the main rod, the auxiliary rod and the main body. The retaining ring is limited to the groove and blocks the axial hole and the rotating shaft.

6. The crutch chair according to any one of claims 1 to 5, characterized in that: The crutch chair includes an elastic member arranged in the main rod, one end of the elastic member is connected to the sliding member, and the other end of the elastic member is connected to the main rod. The elastic deformation of the elastic member in the folded state is greater than the elastic deformation in the unfolded state, so as to drive the sliding member to slide along the main rod in the folded state and then switch to the unfolded state.

7. The crutch chair according to claim 6, characterized in that: The crutch chair includes a handle connected to the end of the main rod away from the support, and a locking structure movably connected to the handle. In the folded state, the locking structure locks the sliding member to the main rod; the locking structure can also unlock the sliding member to switch to the unfolded state.

8. The crutch chair according to claim 7, characterized in that: The locking structure includes a button and a clamping member movably connected to the handle, and the clamping member has a clamping portion; the main rod is provided with a first clamping hole, and the sliding member is provided with a second clamping hole; in the folded state, the first clamping hole is connected to the second clamping hole to penetrate the clamping portion, so that the sliding member is locked to the main rod; the button is used to press to drive the clamping portion to withdraw from the second clamping hole to release the lock of the sliding member.

9. The crutch chair according to claim 8, characterized in that: The locking structure includes a reset member that abuts against the main rod and the clamping member. After the second clamping hole moves from a misaligned state to an aligned state relative to the first clamping hole, the reset member drives the clamping portion to pass through the second clamping hole.

10. The crutch chair according to any one of claims 1 to 5, characterized in that: The crutch chair includes a handle connected to the end of the main rod away from the support, the handle includes a gripping portion, an adjustment sleeve connected to the gripping portion, and an adjustment piece detachably connected to the adjustment sleeve, the main rod is passed through the adjustment sleeve and is provided with at least two first adjustment holes arranged at intervals along the axial direction of the main rod, the adjustment sleeve is provided with a second adjustment hole, the adjustment piece is passed through the second adjustment hole and one of the first adjustment holes, so that the positions of the main rod and the handle are relatively fixed; after the adjustment piece is removed from the second adjustment hole, the gripping portion can drive the adjustment sleeve to move relative to the main rod, so that the second adjustment hole is aligned with any other first adjustment hole, so as to pass the adjustment piece and adjust the relative position of the gripping portion and the main rod.

11. The crutch chair according to claim 10, characterized in that: The adjustment sleeve includes an inner cylinder connected to the grip portion, and an outer cylinder connected to the grip portion and sleeved on the inner cylinder, the adjustment member is detachably connected to the outer cylinder and the inner cylinder, the end of the main rod close to the handle is passed through the inner cylinder and the outer cylinder, the outer cylinder has the second adjustment hole, the inner cylinder has an auxiliary hole aligned with the second adjustment hole, the adjustment member is passed through the auxiliary hole, the second adjustment hole and one of the first adjustment holes, so that the positions of the main rod and the handle are relatively fixed.

12. The crutch chair according to claim 10, characterized in that: The handle includes a hook connected to the gripping portion, the gripping portion is provided with a receiving groove, the bottom of the receiving groove is provided with a rotating column, one end of the hook is provided with an opening for inserting the rotating column and a waist-shaped hole connected to the opening; the hook has a snap-on state and an open state relative to the gripping portion, in the snap-on state, the hook is snapped into the receiving groove and the rotating column is abutted against one end of the waist-shaped hole; in the open state, the end of the hook away from the rotating column is detached from the gripping portion and forms a hanging space with the gripping portion, and the rotating column is abutted against the other end opposite to the waist-shaped hole.

13. The crutch chair according to any one of claims 1 to 5, characterized in that: The support assembly includes a first connecting rod and two second connecting rods, one end of the first connecting rod is rotatably connected to the main rod, the other end of the first connecting rod is connected to the main seat surface, and the connection position of the first connecting rod and the main seat surface is spaced apart from the connection position of the main seat surface and the sliding member; one end of the two second connecting rods are rotatably connected to the sliding member, and the other ends of the two second connecting rods are rotatably connected to the two auxiliary rods in a one-to-one correspondence, the auxiliary rods have a supporting end that supports the auxiliary seat surface in the unfolded state, and the connection position of the second connecting rod and the auxiliary rod is located between the support and the supporting end; the connection position of the sliding member and the main seat surface, the connection position of the second connecting rod and the sliding member, the connection position of the first connecting rod and the main rod and the support are arranged in sequence along the axial extension direction of the main rod.

14. The crutch chair according to claim 13, characterized in that: The first connecting rod includes a rocker arm rotatably connected to the main seat surface, and a support rod rotatably connected to the rocker arm, the support rod is rotatably connected to the main rod, and the main seat surface is provided with a limit groove for limiting the rotation range of the rocker arm; during the process of switching the support assembly between the folded state and the unfolded state, the rocker arm drives the support rod to swing relative to the main seat surface.

15. The crutch chair according to any one of claims 1 to 5, characterized in that: The crutch chair includes an auxiliary component, which includes a first swing arm and a second swing arm rotatably connected to the main chair surface, the sliding member has a protrusion, and the two secondary chair surfaces respectively have a supporting portion; in the process of the support component switching from a folded state to an expanded state, the protrusion presses the first swing arm and the second swing arm and drives the first swing arm and the second swing arm to rotate relative to the main chair surface, the first swing arm presses the supporting portion on one side, and the second swing arm presses the supporting portion on the other side, so that the two secondary chair surfaces are spread open relative to the main chair surface.

16. The crutch chair according to claim 15, characterized in that: The auxiliary component includes a return member connected to the main seat surface, and the return member is connected to at least one of the first swing arm and the second swing arm. During the process of switching the support component from the expanded state to the folded state, the return member drives the first swing arm and the second swing arm to reset.

17. The crutch chair according to claim 15, characterized in that: The first swing arm includes an integrally formed body and a bearing portion, the bearing portion is connected to one end of the body and is inclined with respect to the length extension direction of the body, the other end of the body has a guide surface, the guide surface is a plane and is inclined with respect to the length direction of the body, the body is rotatably connected to the main seat surface; during the process of the support assembly switching from a folded state to an expanded state, the protrusion presses the bearing portion and drives the body to rotate relative to the main seat surface, and the guide surface presses the supporting portion corresponding to the first swing arm to drive the corresponding secondary seat surface to rotate relative to the main seat surface.

18. The crutch chair according to claim 17, characterized in that: The first swing arm includes a limiting portion integrally formed with the body, the limiting portion protruding from the guide surface along the length extension direction of the body, and when the protruding portion presses against the bearing portion, the protruding portion limits the movement range of the body.

19. The crutch chair according to any one of claims 1 to 5, characterized in that: In a direction perpendicular to the length extension of the main rod, opposite sides of the sliding member are provided with hanging holes, and the hanging holes are used to connect hanging ropes or hang objects.

20. The crutch chair according to any one of claims 1 to 5, characterized in that: One of the two auxiliary seat surfaces is provided with a clamping block, and the other is provided with a clamping slot. In the folded state, the clamping block is clamped in the clamping slot, and one end of the auxiliary rod close to the seat surface assembly is stored in the space formed by the main seat surface and the auxiliary seat surface.

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