Crutch chair

Abstract

The invention discloses a walking stick chair which comprises a main supporting rod, a seat assembly and a supporting assembly, the seat assembly comprises a sliding seat capable of sliding along the main supporting rod, a first fixing seat is fixedly connected to the main supporting rod, the seat assembly further comprises a main chair plate, a left chair plate and a right chair plate are hinged to the two sides of the main chair plate, and the rear side of the main chair plate is hinged to the first fixing seat; a transmission rod hinged to the main chair plate and the sliding seat is arranged between the front side of the main chair plate and the sliding seat, a sliding sleeve capable of sliding along the transmission rod is arranged on the transmission rod, and a driving rod hinged to the main chair plate and the sliding sleeve is arranged between the middle of the main chair plate and the sliding sleeve. A left linkage piece which is movably connected with the sliding sleeve and the left chair plate and can drive the left chair plate to be folded relative to the main chair plate when the main chair plate is folded is arranged between the sliding sleeve and the left chair plate, and a right linkage piece which is movably connected with the sliding sleeve and the right chair plate and can drive the right chair plate to be folded relative to the main chair plate when the main chair plate is folded is arranged between the sliding sleeve and the right chair plate; a traction piece capable of driving the supporting assembly to be folded is arranged between the sliding base and the supporting assembly. The garment is flexible to fold and unfold.

Description

[Technical field]

[0001] The invention relates to a crutch chair. [Background technology]

[0002] Elderly people or people with limited mobility often need to stop and rest to recover their strength during walking. For this reason, cane chairs have appeared on the market. Cane chairs generally include a main support rod, a seat assembly and a support assembly. When the seat assembly and the support assembly are folded, the cane chair can be used as a cane to assist walking. When the seat assembly and the support assembly are unfolded, the user can sit on the unfolded seat assembly and rest. At this time, the support assembly is supported on the ground together with the main support rod. However, the folding structure of the traditional cane chair is not flexible and convenient enough.

[0003] A Chinese patent for a crutch chair that is easy to fold and safe (publication number CN216627694U) discloses a crutch chair, the folding principle of which is as follows: pushing the unlocking piece, at which time the unlocking piece is pushed to compress the unlocking spring, the positioning part withdraws from the unfolding positioning groove, the upper fixed seat slides upward along the mounting rod, the folding unit and the seat unit move with the upper fixed seat, until the unlocking slider abuts against the lower end of the upper limit member, the upper fixed seat continues to slide upward, the upper limit member pushes the unlocking slider, the unlocking slider squeezes the second compression spring, the sliding seat slides downward relative to the fixed seat, and under the action of external force, the unlocking slider The block cannot pull the hook close to the sliding seat 22. At the same time, under the action of the third compression spring, the hook moves away from the sliding seat until it is locked. The top of the folding rod slides from the extended end point of the guide rail to the folded end point of the guide rail. Driven by the linkage rod, the main seat rotates relative to the upper fixed seat, and the outer end of the main seat approaches the mounting rod. At the same time, the folding rod drives the folding rod, and the first side seat and the second side seat rotate relative to the main seat. The first side seat and the second side seat have a tendency to wrap the support unit. The sliding seat slides downward relative to the fixed seat, and the sliding seat presses the upper foot rod to fold upward, thereby driving the lower foot rod to rotate and fold. Therefore, compared with the traditional crutch chair, the crutch chair has the characteristic of being easy to fold. The present invention provides another crutch chair that is different from the structure of the crutch chair and is flexible to fold. [Summary of the invention]

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a flexible crutch chair.

[0005] The present invention is achieved through the following technical solutions:

[0006] A crutch chair, comprising a main support rod with a grip portion, the main support rod being provided with a seat assembly that can be expanded or folded relative to the main support rod, the main support rod being further provided with a support assembly that can be expanded or folded relative to the main support rod, the seat assembly comprising a sliding seat that can slide along the main support rod, a first fixed seat being fixedly connected to the main support rod and located above the sliding seat, the seat assembly also comprising a main chair board, a left chair board and a right chair board being hinged on both sides of the main chair board, the rear side of the main chair board being hinged to the first fixed seat, a transmission rod being hinged to the front side of the main chair board and the sliding seat and capable of driving the main chair board to fold, the transmission rod A sliding sleeve that can slide along it is provided on it, a driving rod that is hinged to the middle part of the main chair board and the sliding sleeve is provided between the middle part of the main chair board and the sliding sleeve and can push the sliding sleeve to slide relative to the transmission rod when the main chair board is folded, a left linkage member that is movably connected to the two and can drive the left chair board to be folded relative to the main chair board when the main chair board is folded is provided between the sliding sleeve and the left chair board, a right linkage member that is movably connected to the two and can drive the right chair board to be folded relative to the main chair board when the main chair board is folded is provided between the sliding sleeve and the right chair board, and a traction member that can drive the support assembly to be folded relative to the main support rod when the sliding seat drives the seat assembly to be folded is provided between the sliding seat and the support assembly.

[0007] The left linkage member includes a first hinged seat hinged to the sliding sleeve, a second hinged seat is hinged on the first hinged seat, a third hinged seat is provided on the front side of the left chair board and can rotate relative to the third hinged seat, a left linkage rod is provided between the third hinged seat and the second hinged seat, which is hinged to the two and can pull the left chair board to be folded relative to the main chair board when the sliding sleeve slides; the right linkage member includes a fourth hinged seat hinged to the sliding sleeve, a fifth hinged seat is hinged on the fourth hinged seat, a sixth hinged seat is provided on the front side of the right chair board and can rotate relative to the sixth hinged seat, a right linkage rod is provided between the sixth hinged seat and the fifth hinged seat, which is hinged to the two and can pull the right chair board to be folded relative to the main chair board when the sliding sleeve slides.

[0008] A second fixed seat is fixedly connected on the main support rod and located below the sliding seat, and a third fixed seat fixed to the main support rod is provided below the second fixed seat. The support assembly includes a left support rod and a right support rod hinged on the second fixed seat, and the lower end of the left support rod is hinged with a left bottom rod, and the lower end of the right support rod is hinged with a right bottom rod, a left connecting rod is provided between the third fixed seat and the left bottom rod, which can drive the left bottom rod to move closer and retract to the left support rod when the traction member drives the left support rod to retract toward the main support rod, and a right connecting rod is provided between the third fixed seat and the right bottom rod, which can drive the right bottom rod to move closer and retract to the right support rod when the traction member drives the right support rod to retract toward the main support rod.

[0009] The traction member comprises a left traction rod which is arranged between the sliding seat and the left support rod and is hinged to the two, and the traction member also comprises a right traction rod which is arranged between the sliding seat and the right support rod and is hinged to the two.

[0010] The crutch chair also includes a locking device capable of locking the seat assembly and the support assembly in the unfolded state, the locking device including a locking hole provided on the main support rod, the main support rod also being provided with an unlocking sleeve capable of sliding relative thereto, a connecting rod connecting the unlocking sleeve and the sliding seat being provided between the two and capable of pulling the sliding seat to slide when the unlocking sleeve slides, a locking block capable of engaging with or disengaging from the locking hole being provided in the unlocking sleeve, a button capable of driving the locking block to disengage from the locking hole being connected to the unlocking sleeve, and a first reset spring capable of resetting the locking block being provided in the unlocking sleeve.

[0011] The middle part of the button is hinged to the unlocking sleeve, the locking block is hinged to one end of the button, and the first return spring is arranged between the other end of the button and the unlocking sleeve.

[0012] A clamping hole is provided on the front side of the main chair plate, and a clamping hook is connected to the second fixing seat and can be engaged with the clamping hole when the seat assembly is in a folded state.

[0013] The hook is hinged with the second fixed seat, and the inner end of the hook is provided with a pull rope that can make the hook engage with the card hole when the hook is pulled to rotate. The upper part of the main support rod is provided with a sliding block that can slide relative to it and is connected to the upper end of the pull rope. The sliding block is provided with an exposed protruding block that can be pushed by the unlocking sleeve when the unlocking sleeve slides. A second reset spring that can push the hook to return to its original position is also provided between the second fixed seat and the hook. The main support rod is also provided with a positioning hole that can engage with the locking block to position the unlocking sleeve when the hook is engaged with the card hole.

[0014] A third return spring capable of pushing the sliding seat to slide and return is also arranged between the first fixed seat and the sliding seat.

[0015] A torsion spring is provided between the first fixing seat and the main seat plate.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. When the seat assembly and the support assembly of the crutch chair of the present invention need to be folded, the sliding seat is made to slide upward along the main support rod. During the sliding process, the main seat plate is pulled to rotate relative to the first fixed seat by the transmission rod. At this time, the main seat plate rotates and approaches the main support rod. During this process, the main seat plate pushes the sliding sleeve on the transmission rod to slide through the driving rod. When the sliding sleeve slides, it pulls the left seat plate to rotate and retract relative to the main seat plate and pulls the right seat plate to rotate and retract relative to the main seat plate through the left linkage and the right linkage. In addition, during the sliding upward sliding process of the sliding seat, the sliding seat pulls the support assembly to rotate and retract relative to the main support rod through the traction member, thereby realizing the folding of the seat assembly and the support assembly to the main support rod. During the entire folding process, only the sliding seat slides on the main support rod, which can ensure that the seat assembly and the support assembly can be folded flexibly, and the user can use it more conveniently and quickly.

[0018] 2. When the seat assembly and the support assembly of the present invention are folded, since the rotation directions of the main chair board relative to the first fixed seat and the left and right chair boards relative to the main chair board are inconsistent, the first hinge seat is hinged on the sliding sleeve, the second hinge seat is hinged on the first hinge seat, and a third hinge seat that can rotate relative to the left chair board is set on the front side of the left chair board, and a left linkage rod hinged to the third hinge seat and the second hinge seat is set between the third hinge seat and the second hinge seat. When the sliding sleeve slides, the sliding sleeve drives the first hinge seat and the second hinge seat to move, so when the main chair board rotates relative to the first fixed seat, the left chair board can be pulled to rotate relative to the main chair board through the left linkage rod, thereby realizing rotational movement in different directions. The design is ingenious. For the same reason, the fourth hinge seat is hinged on the sliding sleeve, the fifth hinge seat is hinged on the fourth hinge seat, and the sixth hinge seat that can rotate relative to the right chair board is set on the front side of the right chair board, and a right linkage rod hinged to the sixth hinge seat and the fifth hinge seat is set between the sixth hinge seat and the fifth hinge seat, thereby realizing the rotation and folding of the right chair board relative to the main chair board.

[0019] 3. When the sliding seat of the present invention slides upward, the left and right traction rods pull the left and right support rods to rotate upward and move closer to the main support rod. At the same time, the left and right connecting rods pull the left and right bottom rods to rotate relative to the left and right support rods and move closer, thereby realizing the folding of the support assembly. The entire structure is simple and reliable, and the folding and folding are flexible.

[0020] 4. The present invention has a simple structure, is flexible to fold and unfold, is easy for users to use, can be quickly switched between the two states of a crutch and a chair, and is suitable for popularization and application.

Brief Description of the Drawings

[0021] Figure 1 It is one of the stereograms of the present invention;

[0022] Figure 2 It is the second stereogram of the present invention;

[0023] Figure 3 It is one of the side views of the present invention;

[0024] Figure 4 This is the second side view of the present invention;

[0025] Figure 5 is a cross-sectional view of the present invention;

[0026] Figure 6 It is one of the three-dimensional views of the components of the present invention;

[0027] Figure 7 is a stereogram of the present invention during the folding process;

[0028] Figure 8 yes Figure 7 Magnified view at A in the middle;

[0029] Fig. 9It is one of the three-dimensional views of the components in the folding process of the present invention;

[0030] Fig.10 is the second stereoscopic diagram of the components in the folding process of the present invention;

[0031] Fig.11 is a cross-sectional view of the present invention during the folding process;

[0032] Fig.12 yes Fig.11 Magnified view at B in the middle;

[0033] Fig.13 is an exploded view of the components of the present invention;

[0034] Fig.14 It is a three-dimensional diagram of the folded state of the present invention. [Specific implementation method]

[0035] The present invention will be further described below in conjunction with the accompanying drawings:

[0036] like Figure 1 and Fig.14 As shown, a cane chair comprises a main support rod 1 having a grip portion 10, the main support rod 1 is provided with a seat assembly 2 which can be unfolded or folded relative to the main support rod 1, and the main support rod 1 is further provided with a support assembly 3 which can be unfolded or folded relative to the main support rod 1. When the seat assembly 2 and the support assembly 3 are in the unfolded state, the cane chair is used as a chair, and the user can sit on the seat assembly 2 to rest, and when the seat assembly 2 and the support assembly 3 are in the folded state, the user can hold the grip portion 10 and use it as a cane to assist the user in walking.

[0037] like Figures 1 to 14As shown, the seat assembly 2 includes a sliding seat 21 that can slide along the main support rod 1, and a first fixed seat 11 is fixedly connected to the main support rod 1 and located above the sliding seat 21. The seat assembly 2 also includes a main chair board 22, and the left chair board 23 and the right chair board 24 are hinged on both sides of the main chair board 22. The rear side of the main chair board 22 is hinged to the first fixed seat 11, and a transmission rod 25 is provided between the front side of the main chair board 22 and the sliding seat 21, which is hinged to the two and can drive the main chair board 22 to fold. The transmission rod 25 is provided with a sliding sleeve 26 that can slide along it, and a transmission rod 25 is provided between the middle part of the main chair board 22 and the sliding sleeve 26, which is hinged to the two. A driving rod 27 is connected to the main chair board 22 and can push the sliding sleeve 26 to slide relative to the transmission rod 25 when the main chair board 22 is folded. A left linkage member 28 is provided between the sliding sleeve 26 and the left chair board 23, which is movably connected to the two and can drive the left chair board 23 to be folded relative to the main chair board 22 when the main chair board 22 is folded. A right linkage member 29 is provided between the sliding sleeve 26 and the right chair board 24, which is movably connected to the two and can drive the right chair board 24 to be folded relative to the main chair board 22 when the main chair board 22 is folded. In addition, a traction member 4 is provided between the sliding seat 21 and the support assembly 3, which can drive the support assembly 3 to be folded relative to the main support rod 1 when the sliding seat 21 drives the seat assembly 2 to be folded. When the seat assembly 2 and the support assembly 3 need to be folded, the sliding seat 21 slides upward along the main support rod 1. During the sliding process, the main seat board 22 is pulled to rotate relative to the first fixed seat 11 by the transmission rod 25. At this time, the main seat board 22 rotates and approaches the main support rod 1. During this process, the main seat board 22 pushes the sliding sleeve 26 on the transmission rod 25 to slide through the driving rod 27. When sliding, the sliding sleeve 26 pulls the left seat board 23 to rotate and retract relative to the main seat board 22 and pulls the right seat board 24 to rotate and retract relative to the main seat board 22 through the left linkage 28 and the right linkage 29. In addition, during the upward sliding process of the sliding seat 21, the sliding seat 21 pulls the support assembly 3 to rotate and retract relative to the main support rod 1 through the traction member 4, so that the seat assembly 2 and the support assembly 3 are folded and approached to the main support rod 1. During the entire folding process, only the sliding seat 21 slides on the main support rod 1, which can ensure that the seat assembly 2 and the support assembly 3 are flexible to fold and are more convenient and quick for users to use.

[0038] like Figures 2 to 6 ,as well as Fig. 9 and Fig.10As shown, the left linkage member 28 includes a first hinge seat 281 hinged to the sliding sleeve 26, a second hinge seat 282 is hinged on the first hinge seat 281, a third hinge seat 283 which can rotate relative to the left chair board 23 is provided on the front side of the left chair board 23, a left linkage rod 284 which is hinged to the third hinge seat 283 and the second hinge seat 282 and can pull the left chair board 23 to be folded relative to the main chair board 22 when the sliding sleeve 26 slides is provided between the third hinge seat 283 and the second hinge seat 282; the right linkage member 29 includes a fourth hinge seat 294 which is hinged to the sliding sleeve 26, a fifth hinge seat 295 is hinged on the fourth hinge seat 294, a sixth hinge seat 296 which can rotate relative to the right chair board 24 is provided on the front side of the right chair board 24, a right linkage rod 297 which is hinged to the sixth hinge seat 296 and the fifth hinge seat 295 and can pull the right chair board 24 to be folded relative to the main chair board 22 when the sliding sleeve 26 slides is provided between the sixth hinge seat 296 and the fifth hinge seat 295. When the sliding sleeve 26 slides, the sliding sleeve 26 drives the first hinge seat 281 and the second hinge seat 282 to move. Therefore, when the main chair board 22 rotates relative to the first fixed seat 11, the left chair board 23 can be pulled to rotate relative to the main chair board 22 through the left connecting rod 284, thereby avoiding interference caused by the different rotation directions of the main chair board 22 and the left chair board 23, ensuring that the main chair board 22 rotates and retracts relative to the first fixed seat 11 while the left chair board 23 can also rotate and retract relative to the main chair board 22. By the same token, the right chair board 24 can also rotate and retract relative to the main chair board 22, which is a clever design.

[0039] like Figures 1 to 5 ,as well as Figure 7 and Figure 8 As shown, a second fixed seat 12 is fixedly connected to the main support rod 1 and located below the sliding seat 21, and a third fixed seat 13 fixed to the main support rod 1 is provided below the second fixed seat 12. The support assembly 3 includes a left support rod 31 and a right support rod 32 hinged on the second fixed seat 12, a left bottom rod 33 is hinged at the lower end of the left support rod 31, and a right bottom rod 34 is hinged at the lower end of the right support rod 32. A left connecting rod 35 is provided between the third fixed seat 13 and the left bottom rod 33, which can drive the left bottom rod 33 to move closer to and retract the left support rod 31 when the traction member 4 drives the left support rod 31 to retract toward the main support rod 1; a right connecting rod 36 is provided between the third fixed seat 13 and the right bottom rod 34, which can drive the right bottom rod 34 to move closer to and retract the right support rod 32 when the traction member 4 drives the right support rod 32 to retract toward the main support rod 1. When the sliding seat 21 slides upward, the left and right traction rods pull the left and right support rods to rotate upward and move closer to the main support rod 1. At the same time, the left and right connecting rods pull the left and right bottom rods to rotate relative to the left and right support rods and move closer, thereby realizing the folding of the support assembly 3. The entire structure is simple, reliable, and flexible to fold.

[0040] like Figures 1 to 5 ,as well as Figure 7 and Figure 8As shown, the traction member 4 includes a left traction rod 41 provided between the sliding seat 21 and the left support rod 31 and hinged to the two, and the traction member 4 also includes a right traction rod 42 provided between the sliding seat 21 and the right support rod 32 and hinged to the two. When the sliding seat 21 slides upward, the main seat board 22, the left seat board 23 and the right seat board 24 are folded together through the transmission rod 25 and the left and right linkage members, and the support assembly 3 is folded together through the left traction rod 41 and the right traction rod 42. Only the sliding seat 21 slides on the entire main support rod 1 to realize the folding of the seat assembly 2 and the support assembly 3, and the folding is flexible and reliable. When the seat assembly 2 and the support assembly 3 need to be unfolded, the sliding seat 21 only needs to slide downward.

[0041] like Figure 2 and Fig.13 As shown, the crutch chair also includes a locking device that can lock the seat assembly 2 and the support assembly 3 in the expanded state, the locking device includes a locking hole 51 provided on the main support rod 1, and the main support rod 1 is also provided with an unlocking sleeve 52 that can slide relative to it, and a connecting rod 53 is provided between the unlocking sleeve 52 and the sliding seat 21 to connect the two and can pull the sliding seat 21 to slide when the unlocking sleeve 52 slides, and a locking block 54 that can engage with or disengage from the locking hole 51 is provided in the unlocking sleeve 52, and a button 55 that can drive the locking block 54 to disengage from the locking hole 51 is also connected to the unlocking sleeve 52, the middle part of the button 55 is hinged to the unlocking sleeve 52, and the locking block 54 is hinged to one end of the button 55, and the first return spring 56 is provided between the other end of the button 55 and the unlocking sleeve 52, and the unlocking sleeve 52 is also provided with a first return spring 56 that can reset the locking block 54. When the crutch chair needs to be switched from the chair state to the crutch state, the button 55 is pressed, and when the button 55 rotates relative to the unlocking sleeve 52, the locking block 54 is driven to disengage from the locking hole 51, and then the unlocking sleeve 52 is slid upward, and the sliding seat 21 is pulled upward through the connecting rod 53 to slide upward, thereby realizing the folding of the seat assembly 2 and the support assembly 3. In the folding operation, it is only necessary to press the button 55 and push the unlocking sleeve 52 upward, which is very convenient and quick to operate. Of course, the locking device can also adopt other locking structures, as long as the sliding seat 21 can be locked when the seat assembly 2 and the support assembly 3 are in the unfolded state.

[0042] like Figure 6 , Figure 7 and Fig.13 As shown, the front side of the main chair panel 22 is provided with a card hole 20, and the second fixed seat 12 is connected with a card hook 6 which can engage with the card hole 20 when the seat assembly 2 is in the folded state, thereby maintaining the folded state of the seat assembly 2 and the support assembly 3, making it convenient for the user to use the crutch chair as a crutch.

[0043] like Fig.13As shown, the hook 6 is hinged with the second fixed seat 12, and the inner end of the hook 6 is provided with a pull rope 71 which can engage the hook 6 with the locking hole 20 when the hook 6 is pulled to rotate, and the upper part of the main support rod 1 is provided with a sliding block 72 which can slide relative to it and is connected to the upper end of the pull rope 71, and the sliding block 72 is provided with an exposed protruding block 73 which can be pushed by the unlocking sleeve 52 when the unlocking sleeve 52 slides, and a second reset spring 8 which can push the hook 6 to reset is also provided between the second fixed seat 12 and the hook 6, and a positioning hole 14 is also provided on the main support rod 1 which can engage with the locking block 54 to position the unlocking sleeve 52 when the hook 6 is engaged with the locking hole 20. When the unlocking sleeve 52 moves upward and pulls the sliding seat 21 to slide upward, the unlocking sleeve 52 pushes the protruding block 73, so that the sliding block 72 moves upward, and the sliding block 72 pulls the hook 6 to rotate through the pull rope 71. The hook 6 engages with the locking hole 20 on the main chair plate 22 during the rotation, and the locking block 54 engages with the positioning hole 14 at this time, so that the unlocking sleeve 52 is positioned, and then the engaging state of the hook 6 and the locking hole 20 is maintained, preventing the seat assembly 2 and the support assembly 3 from being accidentally unfolded, ensuring that the crutch chair is used as a crutch. When the crutch chair needs to be used as a chair, the button 55 is pressed to disengage the locking block 54 from the positioning hole 14 and slide the unlocking sleeve 52 downward. At this time, the unlocking sleeve 52 no longer pushes the protruding block 73 upward, and the second reset spring 8 can push the hook 6 to rotate and reset, and the hook 6 is disengaged from the locking hole 20. When the unlocking sleeve 52 slides downward, the connecting rod 53 pushes the sliding seat 21 to slide downward, so that the seat assembly 2 and the support assembly 3 are unfolded.

[0044] like Figure 5 , Fig.12 and Fig.13 As shown, a third return spring 9 is provided between the first fixed seat 11 and the sliding seat 21 to push the sliding seat 21 to slide and return. When the sliding seat 21 slides upward, the third return spring 9 is compressed. When the locking block 54 is disengaged from the positioning hole 14, the third return spring 9 can push the sliding seat 21 downward to slide, making the unfolding operation of the seat assembly 2 and the support assembly 3 more convenient and quick.

[0045] Of course, in order to make the seat assembly 2 more convenient to unfold, a torsion spring can also be arranged between the main seat board 22 and the first fixed seat 11. When the main seat board 22 rotates and retracts relative to the first fixed seat 11, the torsion spring is pushed and deformed, and when the hook 6 is disengaged from the clamping hole 20, the torsion spring elastically recovers, and can apply a thrust to the main seat board 22, so that the main seat board 22 rotates and unfolds relative to the first fixed seat 11 more smoothly. When the main seat board 22 rotates and unfolds, the driving rod 27 pulls the sliding sleeve 26 to slide, thereby pushing the left seat board 23 and the right seat board 24 to unfold through the left linkage 28 and the right linkage 29.

[0046] The present embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. A crutch chair, comprising a main support rod (1) having a grip portion (10), the main support rod (1) being provided with a seat assembly (2) that can be expanded or folded relative to the main support rod (1), and the main support rod (1) being further provided with a support assembly (3) that can be expanded or folded relative to the main support rod, characterized in that: The seat assembly (2) includes a sliding seat (21) that can slide along the main support rod (1), and a first fixed seat (11) is fixedly connected to the main support rod (1) and located above the sliding seat (21). The seat assembly (2) also includes a main chair board (22), and the left chair board (23) and the right chair board (24) are hinged on both sides of the main chair board (22). The rear side of the main chair board (22) is hinged to the first fixed seat (11), and a transmission rod (25) is provided between the front side of the main chair board (22) and the sliding seat (21), which is hinged to the two and can drive the main chair board (22) to fold, and the transmission rod (25) is provided with a sliding sleeve (26) that can slide along it, and a main chair board (22) is provided between the middle part of the main chair board (22) and the sliding sleeve (26). A driving rod (27) is provided which can push the sliding sleeve (26) to slide relative to the transmission rod (25) when the chair board (22) is folded; a left linkage member (28) is provided between the sliding sleeve (26) and the left chair board (23) and is movably connected to the two and can drive the left chair board (23) to fold relative to the main chair board (22) when the main chair board (22) is folded; a right linkage member (29) is provided between the sliding sleeve (26) and the right chair board (24) and is movably connected to the two and can drive the right chair board (24) to fold relative to the main chair board (22) when the main chair board (22) is folded; and a traction member (4) is provided between the sliding seat (21) and the support assembly (3) and can drive the support assembly (3) to fold relative to the main support rod (1) when the sliding seat (21) drives the seat assembly (2) to fold.

2. The crutch chair according to claim 1, characterized in that: The left linkage member (28) comprises a first hinge seat (281) hinged to the sliding sleeve (26), a second hinge seat (282) hinged to the first hinge seat (281), a third hinge seat (283) capable of rotating relative to the left chair board (23) is provided on the front side of the left chair board (23), and a left linkage rod (284) is provided between the third hinge seat (283) and the second hinge seat (282) and is hinged to the third hinge seat (283) and the second hinge seat (282) and can pull the left chair board (23) to be folded relative to the main chair board (22) when the sliding sleeve (26) slides; The right linkage member (29) includes a fourth hinge seat (294) hinged to the sliding sleeve (26), a fifth hinge seat (295) hinged on the fourth hinge seat (294), a sixth hinge seat (296) capable of rotating relative to the right chair board (24) is provided on the front side of the right chair board (24), and a right linkage rod (297) is provided between the sixth hinge seat (296) and the fifth hinge seat (295) which is hinged to the two and can pull the right chair board (24) to be folded relative to the main chair board (22) when the sliding sleeve (26) slides.

3. The crutch chair according to claim 1, characterized in that: A second fixed seat (12) is fixedly connected to the main support rod (1) and located below the sliding seat (21); a third fixed seat (13) fixed to the main support rod (1) is provided below the second fixed seat (12); the support assembly (3) comprises a left support rod (31) and a right support rod (32) hinged on the second fixed seat (12); a left bottom rod (33) is hinged at the lower end of the left support rod (31); a right bottom rod (34) is hinged at the lower end of the right support rod (32); A left connecting rod (35) is provided between the third fixed seat (13) and the left bottom rod (33), which can drive the left bottom rod (33) to move closer to the left support rod (31) when the traction member (4) drives the left support rod (31) to move closer to the main support rod (1); a right connecting rod (36) is provided between the third fixed seat (13) and the right bottom rod (34), which can drive the right bottom rod (34) to move closer to the right support rod (32) when the traction member (4) drives the right support rod (32) to move closer to the main support rod (1).

4. The crutch chair according to claim 3, characterized in that: The traction member (4) comprises a left traction rod (41) arranged between the sliding seat (21) and the left support rod (31) and hingedly connected to the two. The traction member (4) also comprises a right traction rod (42) arranged between the sliding seat (21) and the right support rod (32) and hingedly connected to the two.

5. The crutch chair according to claim 3 or 4, characterized in that: The invention also comprises a locking device capable of locking the seat assembly (2) and the support assembly (3) in the unfolded state, the locking device comprising a locking hole (51) provided on the main support rod (1), the main support rod (1) also being provided with an unlocking sleeve (52) capable of sliding relative thereto, a connecting rod (53) connecting the unlocking sleeve (52) and the sliding seat (21) and capable of pulling the sliding seat (21) to slide when the unlocking sleeve (52) slides, a locking block (54) capable of engaging with or disengaging from the locking hole (51) being provided in the unlocking sleeve (52), a button (55) capable of driving the locking block (54) to disengage from the locking hole (51) being connected to the unlocking sleeve (52), and a first reset spring (56) capable of resetting the locking block (54) being provided in the unlocking sleeve (52).

6. The crutch chair according to claim 5, characterized in that: The middle part of the button (55) is hinged to the unlocking sleeve (52), the locking block (54) is hinged to one end of the button (55), and the first return spring (56) is arranged between the other end of the button (55) and the unlocking sleeve (52).

7. The crutch chair according to claim 5, characterized in that: The front side of the main chair plate (22) is provided with a latch hole (20), and the second fixing seat (12) is connected with a latch hook (6) which can be engaged with the latch hole (20) when the seat assembly (2) is in a folded state.

8. The crutch chair according to claim 7, characterized in that: The hook (6) is hinged to the second fixed seat (12); the inner end of the hook (6) is provided with a pull rope (71) which can make the hook (6) engage with the locking hole (20) when the hook (6) is pulled to rotate; the upper part of the main support rod (1) is provided with a sliding block (72) which can slide relative to the main support rod and is connected to the upper end of the pull rope (71); the sliding block (72) is provided with an exposed protruding block (73) which can be pushed by the unlocking sleeve (52) when the unlocking sleeve (52) slides; a second reset spring (8) which can push the hook (6) to reset is also provided between the second fixed seat (12) and the hook (6); the main support rod (1) is also provided with a positioning hole (14) which can engage with the locking block (54) when the hook (6) is engaged with the locking hole (20) to position the unlocking sleeve (52).

9. The crutch chair according to claim 1, characterized in that: A third return spring (9) capable of pushing the sliding seat (21) to slide and return is also provided between the first fixed seat (11) and the sliding seat (21).

10. The crutch chair according to claim 1, characterized in that: A torsion spring is provided between the first fixing seat (11) and the main chair plate (22).

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