Crutch chair

Abstract

The invention provides a walking stick chair, which comprises a handle, a main support rod, a push switch, a chair surface folding structure, a support folding structure, a folding linkage structure and a chair surface locking structure, the chair surface and the support rod can be automatically unfolded by pressing the push switch, the unfolding and folding states are convenient to switch, the operation is simple and rapid, and the convenience of the walking stick chair is improved; the telescopic rod is arranged in the upper end of the main supporting rod, the height of the walking stick chair is adjustable, and the walking stick chair can adapt to users of different heights and is convenient to transport.

Description

Technical Field

[0001] The invention relates to the field of crutch chairs. Background Art

[0002] Elderly people or people with limited mobility do not have the physical strength to walk continuously like ordinary people. They need to stop and rest properly to recover their physical strength during walking. Therefore, they need a cane chair that can be sat on or used as auxiliary support during walking and resting. Existing cane chairs require manual unfolding of the seat surface and support legs, and cannot be unfolded automatically, which is inconvenient to operate. In addition, the length of the main support rod cannot be adjusted, which has poor adaptability to users of different heights and is inconvenient to transport. Summary of the invention

[0003] In view of the defects of the existing crutch chairs, the technical problem to be solved by the present invention is to provide a crutch chair which can be automatically unfolded and has adjustable length.

[0004] In order to achieve the above-mentioned object, according to one aspect of the present invention, the present invention is implemented by the following technical measures: a crutch chair, comprising a handle, a main support rod, a push switch, a seat folding structure, a support folding structure, a folding linkage structure, and a seat locking structure. The handle is installed and connected to the top end of the main support rod; A receiving groove is provided on one side of the main support rod; The push switch is sleeved on the main support rod, and the push switch includes a switch body, a pressing member, and a spring; The seat folding structure comprises an upper fixing part, an upper sliding part, a main seat, a secondary seat, a main seat support rod and a secondary seat support rod, wherein the upper fixing part and the upper sliding part are sleeved on the main support rod, the upper fixing part is fixed to the main support rod, and the main seat, the secondary seat, the main seat support rod and the secondary seat support rod are automatically unfolded and folded when the upper fixing part and the upper sliding part are away from and close to each other; The support and folding structure comprises a lower fixing member, a lower sliding member, and a secondary supporting rod, wherein the lower fixing member and the lower sliding member are sleeved on the main supporting rod, the lower fixing member is fixed to the main supporting rod, a channel for a card block to pass through is provided on one side of the lower fixing member, the upper sliding member is arranged between the upper fixing member and the lower fixing member, the lower sliding member is arranged at the lower end of the lower fixing member, and the secondary supporting rod is automatically unfolded and folded when the lower fixing member and the lower sliding member are away from and close to each other; The folding linkage structure includes a linkage rod and a main spring. The linkage rod is arranged in the accommodating groove of the main support rod. A block A connected to the push switch is provided at the top of the linkage rod. The linkage rod is also provided with a plurality of blocks, which are respectively located at the upper and lower ends of the upper sliding member and the lower sliding member. One end of the main spring is fixed to the bottom of the main support rod, and the other end is connected to the bottom end of the linkage rod.

[0005] Furthermore, the push switch also includes a switch cover, a sliding component, and a locking portion, and a locking hole is provided on the main support rod; a center hole is provided on the switch cover, and a main connecting column is provided at one end of the switch cover close to the pressing component, and two secondary connecting columns are provided at the other end; a accommodating cavity is provided in the switch body, a pressing groove is provided on one side of the accommodating cavity, and a spring accommodating cavity is provided on the other side, the sliding component is placed in the accommodating cavity, the pressing component is placed in the pressing groove, and the spring is placed in the spring accommodating cavity; a center column is also provided in the switch body, a center hole is provided on the center column, a connecting hole I is provided on the center column for connecting the linkage rod, and a locking groove is provided on one side of the center column; two ends of the sliding component are respectively fixedly connected to the pressing component and the locking portion, the sliding component is provided with a center hole, a guide groove II, and two positioning rods, the guide groove II is sleeved on the main connecting column, and the outer sides of the two positioning rods respectively abut against the two secondary connecting columns; one end of the spring abuts against the portion between the two positioning rods, and the other end abuts against the side wall of the switch body.

[0006] Further, the push switch is fixedly connected to the upper fixing piece, and a block groove is provided on one side of the switch body, the upper fixing piece, and the lower fixing piece. The push piece is a button, and a button accommodating cavity is provided on the switch body. The button and both sides of the button accommodating cavity are provided with hinge holes. The button is arranged in the button accommodating cavity and is hinged to the switch body. A spring connection is provided at the upper end of the button accommodating cavity, a spring hole is provided at the upper end of the button, and a clamping hook is provided at the lower end. One end of the spring is placed in the spring hole, and the other end is against the spring connection. The top of the block A at the top end of the linkage rod is provided with an inclined surface.

[0007] Furthermore, a telescopic rod is provided inside the upper end of the main support rod, and a bite portion for fixing the telescopic rod is also provided at the upper end of the push switch. The two sides of the bite portion are connected by a connecting pin, and a cam handle for switching the bite portion is provided on one side of the connecting pin.

[0008] Furthermore, the two ends of the main seat surface are respectively hinged to the upper fixing part and one end of the main support rod of the seat surface, the secondary seat surfaces are respectively hinged to the two sides of the main seat surface, the bottom of the secondary seat surface is hinged to one end of the secondary support rod of the seat surface, the other end of the main support rod of the seat surface is hinged to the upper sliding part, and the two sides of the main support rod of the seat surface are hinged to one end of the secondary support rod of the seat surface.

[0009] Furthermore, the seat surface locking structure includes a clamping block, a connecting column, and a spring B, wherein the clamping block is sleeved on the main support rod, and clamping grooves are provided on both sides of the clamping block, a main clamping hook is provided at one end of the clamping block, and a secondary clamping hook is provided at the bottom of the secondary seat surface, and a clamping structure is provided at the bottom of the main seat surface, and the clamping groove and the secondary clamping hook cooperate to realize the locking of the seat surface, and the main clamping hook and the clamping structure at the bottom of the main seat surface cooperate to realize the locking of the seat surface; a connecting hole II is provided on the lower fixing member, and a limiting portion is provided on the inner wall of the connecting hole II, a clamping portion is provided on the upper end of the connecting column, and the lower end of the connecting column is fixed to the clamping block after passing through the connecting hole II, and the clamping portion of the connecting column abuts on the limiting portion in the connecting hole II; the spring B is sleeved on the connecting column, one end of the spring B abuts against the clamping block, and the other end abuts against the limiting portion in the connecting hole II; a clamping block D is also provided on the linkage rod, and the clamping block D is at the lower end of the clamping block, and the clamping block D abuts against the bottom of the clamping block in the locked state.

[0010] Furthermore, a guide groove I is provided on the main support rod, and guide blocks are provided on the push switch, the upper fixing member, the lower fixing member, the clamping block and the lower sliding member, and the guide blocks are placed in the guide groove I.

[0011] Furthermore, the supporting and folding structure also includes connecting rod A, connecting rod B, connecting rod C, and connecting rod D, and the secondary supporting rods include support rod A, support rod B, support rod C, and support rod D. The upper ends of support rod A and support rod B are hinged to the lower fixing member, and the lower ends are hinged to the upper ends of support rod C and support rod D. One ends of connecting rod A, connecting rod B, connecting rod C, and connecting rod D are hinged to the lower sliding member, and the other ends are respectively hinged to the rod bodies of support rod A, support rod B, support rod C, and support rod D. The support rods A, support rod B, support rod C, and support rod D are U-shaped tubes. When folded, connecting rod C and connecting rod D are retracted into support rod C and support rod D from the U-shaped opening, and support rod C and support rod D are retracted into support rod A and support rod B from the U-shaped opening.

[0012] Furthermore, the bottom of the main seat surface is hinged to the upper fixing member via a hinge column, a torsion spring is sleeved on the hinge column, and the supporting legs of the torsion spring are respectively against the bottom of the main seat surface and the upper fixing member.

[0013] Furthermore, waist-shaped holes are provided at both ends of the auxiliary support rod of the chair surface, and the two ends of the auxiliary support rod of the chair surface are hinged to the connecting seat through the waist-shaped holes. The connecting seat at the upper end is movably connected to the auxiliary chair surface through a pressure plate fixed at the bottom of the auxiliary chair surface, and the bottom of the connecting seat at the lower end is hinged to the side of the main support rod of the chair surface.

[0014] Compared with the prior art, the advantages of the present invention are: the crutch chair can automatically unfold the seat surface and the support rod by pressing a push switch, the unfolding and folding states can be switched conveniently, the operation is simple and quick, and the convenience of the crutch chair is improved; a telescopic rod is arranged inside the upper end of the main support rod, and the height of the crutch chair is adjustable, which can adapt to users of different heights and is easy to transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic structural diagram of an implementation scheme of a crutch chair according to the present invention; Figure 2 This is an exploded structural diagram of the push switch of the present invention; Figure 3 for Figure 2 Another perspective of the exploded view; Figure 4 It is a partial enlarged view of the bottom of the chair surface when the crutch chair of the present invention is in an unfolded state; Figure 5 It is a partial enlarged view of the lower end of the main support rod of the crutch chair of the present invention when it is unfolded; Figure 6 An exploded view of some parts of the crutch chair of the present invention; Figure 7 It is a structural schematic diagram of the lower fixing member of the present invention; Figure 8 It is a structural schematic diagram of the seat surface locking structure of the present invention; Fig. 9 This is a schematic structural diagram of a second embodiment of a crutch chair according to the present invention; Fig.10 for Fig. 9 Partial exploded view of the mid-occlusal area.

[0016] Description of reference numerals: 1. handle; 2. main support rod; 201. guide groove Ⅰ; 202. accommodating groove; 203. locking hole; 3. push switch; 301. switch body; 302. switch cover; 303. sliding member; 304. pressing member; 305. spring A; 306. locking part; 307. main connecting column; 308. secondary connecting column; 309. pressing groove; 310. spring accommodating chamber; 311. center column; 312. connecting hole Ⅰ; 313. locking groove; 314. guide Slot II; 315, positioning rod; 316, button accommodating cavity; 317, hinge hole; 318, spring connection; 319, spring hole; 320, snap hook; 4, seat folding structure; 401, upper fixing member; 402, upper sliding member; 403, main seat; 404, secondary seat; 405, main support rod of seat; 406, secondary support rod of seat; 407, positioning pin; 408, hinge column; 409, secondary snap hook; 410, connecting seat; 411, pressure plate; 412, baffle; 5, support Folding and supporting structure; 501, lower fixing member; 502, lower sliding member; 503, connecting hole II; 504, limiting part; 505, positioning hole; 506, connecting rod A; 507, connecting rod B; 508, connecting rod C; 509, connecting rod D; 510, supporting rod A; 511, supporting rod B; 512, supporting rod C; 513, supporting rod D; 514, groove; 515, limiting block; 516, steel cable; 6, folding linkage structure; 601, linkage rod; 602, main spring; 6 03. Block A; 604. Block B; 605. Block C; 606. Block D; 607. Block E; 608. Block F; 609. Block G; 7. Seat locking structure; 701. Connecting block; 702. Connecting column; 703. Spring B; 704. Slot; 705. Main hook; 706. Connecting part; 8. Guide block; 9. Block slot; 10. Fixing bolt; 11. Anti-slip sleeve; 12. Engaging part; 1201. Connecting pin; 1202. Cam handle; 13. Telescopic rod. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0018] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "bottom", "top", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the innovation of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0019] Please refer to Figure 1 , Figure 6 The present embodiment provides a crutch chair, comprising a handle 1, a main support rod 2, a push switch 3, a seat folding structure 4, a support folding structure 5, a folding linkage structure 6, and a seat locking structure 7. The handle 1 is installed and connected to the top of the main support rod 2. The main support rod 2 is a round tube. The side wall of the tube body is provided with a guide groove Ⅰ201 and a receiving groove 202. The guide groove Ⅰ201 is used for sliding guides of various components. The receiving groove 202 is used to accommodate the folding linkage structure 6 and guide it. Two locking holes 203 are provided at the upper end of the main support rod 2, which correspond to the locking of the open and folded states respectively. The main support rod 2 is provided with two connecting fixing holes, which are respectively used to connect the upper fixing piece 401 and the lower fixing piece 501. The bottom of the main support rod 2 is provided with an anti-slip sleeve 11; Combination Figure 2 , Figure 3 Continuing to explain, the push switch 3 is sleeved on the main support rod 2, and the push switch 3 includes a switch body 301, a switch cover 302, a sliding component 303, a pressing member 304, a spring A305, and a locking portion 306. A accommodating cavity is provided in the switch body 301, a pressing groove 309 is provided on one side of the accommodating cavity, and a spring accommodating cavity 310 is provided on the other side. The sliding component 303 is placed in the accommodating cavity, the pressing member 304 is placed in the pressing groove 309, and the spring A305 is placed in the spring accommodating cavity 310. The switch body 301 is provided with a center column 311, and a center hole, a connecting hole I 312, and a locking groove 313 are provided on the center column 311. The center hole is sleeved on the main support rod 2, and a guide block 8 is provided on the inner wall of the center hole. The guide block 8 is placed in the guide groove I 201, the connecting hole I 312 is used to connect the linkage rod 601; a center hole is provided on the switch cover 302, and a main connecting column 307 is provided on one end of the switch cover 302 close to the pressing piece 304, and two auxiliary connecting columns 308 are provided on the other end; the two ends of the sliding component 303 are respectively fixedly connected with the pressing piece 304 and the locking portion 306, and a center hole, a guide groove II 314, and two positioning rods 315 are provided on the sliding component 303, and the guide groove II 314 is sleeved on the main connecting column 307, and the outer sides of the two positioning rods 315 respectively abut against the two auxiliary connecting columns 308; one end of the spring A 305 abuts against the area between the two positioning rods 315, and the other end abuts against the side wall of the switch body 301 to fix the pressing piece 304 and the sliding component 303.

[0020] Combination Figure 4Continuing to explain, the seat folding structure 4 includes an upper fixing member 401, an upper sliding member 402, a main seat 403, a secondary seat 404, a main seat support rod 405, and a secondary seat support rod 406. The upper fixing member 401 and the upper sliding member 402 are sleeved on the main support rod 2. The inner wall of the upper fixing member 401 is provided with a guide block 8 and a card block groove 9. The guide block 8 is placed in the guide groove Ⅰ201. The side of the upper fixing member 401 is fixed to the main support rod 2 by a fixing bolt 10. The upper sliding member 402 is provided with positioning pins 407 on both sides, and the positioning pins 407 are used for connecting and positioning the seat surface with the lower fixing member 501 after the seat surface is unfolded. The two ends of the main seat surface 403 are respectively hinged to the upper fixing member 401 and the main support rod 405 of the seat surface through the hinge column 408. The hinge column 408 at the hinged joint between the bottom of the main seat surface 403 and the upper fixing member 401 is provided with a torsion spring (not shown in the figure, which can assist the seat surface to unfold), and the supporting feet of the torsion spring are respectively against the main seat surface 4 03 bottom, the upper fixing member 401, the auxiliary seat surface 404 is hinged to the two sides of the main seat surface 403, the bottom of the auxiliary seat surface 404 is provided with an auxiliary hook 409 for connection and fixing when folded, the outer side of the auxiliary seat surface 404 is provided with a baffle 412 for blocking the folded support feet to prevent shaking when folded, the other end of the main support rod 405 of the seat surface is hinged to the upper sliding member 402, and waist-shaped holes are provided at both ends of the auxiliary support rod 406 of the seat surface. The two ends are hinged to the connecting seat 410 through waist-shaped holes. The upper connecting seat 410 is movably connected to the auxiliary seat surface 404 through a pressure plate 411 fixed at the bottom of the auxiliary seat surface 404. The bottom of the lower connecting seat 410 is hinged to the two side surfaces of the main support rod 405 of the seat surface. The main seat surface 403, the auxiliary seat surface 404, the main support rod 405 of the seat surface, and the auxiliary support rod 406 of the seat surface automatically unfold and fold when the upper fixing part 401 and the upper sliding part 402 move away from and approach.

[0021] Combination Figure 5 , Figure 7Continuing to explain, the support folding structure 5 includes a lower fixing member 501, a lower sliding member 502, a connecting rod A506, a connecting rod B507, a connecting rod C508, a connecting rod D509, a support rod A510, a support rod B511, a support rod C512, and a support rod D513. The lower fixing member 501 is sleeved on the main support rod 2, and the side is fixed to the fixing hole of the main support rod 2 by a fixing bolt 10. The inner wall of the lower fixing member 501 is provided with a guide block 8 and a block groove 9 (there is a channel for the block to pass through, for example, it can also be achieved by enlarging the size of the center hole of the lower fixing member). The guide block 8 is placed in the guide groove Ⅰ201, and the lower fixing member 501 is provided with a positioning hole 505 and a connecting hole Ⅱ503, and a limiting portion 504 is provided on the inner wall of the connecting hole Ⅱ503; the lower sliding member 502 is sleeved on the main support rod 2, and the inner wall of the lower sliding member 502 is provided with a guide block 8 and a groove 514, and the guide block 8 is placed in the guide groove Ⅰ201, and a limiting block 515 is provided in the groove 514 (because the lower sliding member 502 is thick, it is necessary to set the groove 514 and the limiting block 515, and the groove 514 and the limiting block 515 can also be replaced by changing the spacing between the blocks on the linkage rod 601 5); support rod A510, support rod B511, support rod C512, support rod D513 are U-shaped tubes, the upper ends of support rod A510 and support rod B511 are hinged to the lower fixing member 501, and the lower ends are hinged to the upper ends of support rod C512 and support rod D513, and anti-slip sleeves 11 are provided at the bottom of support rod C512 and support rod D513, and one end of connecting rod A506, connecting rod B507, connecting rod C508, and connecting rod D509 are hinged to the lower sliding member 502, and the other ends are respectively hinged to support rod A510, support rod B511, support rod C512, support rod D513. The rod bodies of rod C512 and support rod D513 are hinged, wherein connecting rod C508 and connecting rod D509 are hinged on the inner walls of the rod bodies of support rod C512 and support rod D513. When folded, connecting rod C508 and connecting rod D509 are retracted into support rod C512 and support rod D513 from the U-shaped opening, and support rod C512 and support rod D513 are retracted into support rod A510 and support rod B511 from the U-shaped opening; both ends of steel cable 516 are connected and fixed to the rod bodies of support rod A510 and support rod B511 to increase stability in the unfolded state.

[0022] The folding linkage structure 6 includes a linkage rod 601 and a main spring 602. The linkage rod 601 is arranged in the receiving groove 202 of the main support rod 2. The linkage rod 601 is provided with a card block A603, a card block B604, a card block C605, a card block D606, a card block E607, and a card block F608. The card block A603 is connected to the central column 311 of the push switch 3. The card blocks B604 and C605 are distributed on the upper and lower sides of the upper sliding member 402. end, block D606 is located at the lower end of the seat surface locking structure 7, blocks E607 and F608 are distributed at the upper and lower ends of the lower sliding member 502, the distance between blocks B604 and C605 is greater than the height of the upper sliding member 402, and the distance between blocks E607 and F608 is greater than the height of the lower sliding member 502; one end of the main spring 602 is fixed to the bottom of the main support rod 2, and the other end is connected to the bottom end of the linkage rod 601.

[0023] Combination Figure 8 Continuing to explain, the seat surface locking structure 7 includes a clamping block 701, a connecting column 702, and a spring B703. The clamping block 701 is sleeved on the main support rod 2. A guide block 8 is provided on the clamping block 701. The guide block 8 is placed in the guide groove I201. Clamping grooves 704 are provided on both sides of the clamping block 701. A main hook 705 is provided at one end of the clamping block 701. The clamping groove 704 cooperates with the auxiliary hook 409 to achieve seat surface locking. The main hook 705 cooperates with the clamping structure at the bottom of the main seat surface 403 to achieve seat surface locking (the present embodiment is preferably the hinge column 408 at the hinged joint between the main seat surface and the main support rod 405 of the seat surface. In addition, it can also be achieved by, for example A hook-shaped structure similar to the auxiliary hook is provided at the bottom of the main seat surface 403); a clamping portion 706 is provided at the upper end of the connecting column 702, and the lower end of the connecting column 702 passes through the connecting hole II 503 and is fixed to the clamping block 701, and the clamping portion 706 of the connecting column 702 abuts against the limiting portion 504 in the connecting hole II 503; a spring B703 is sleeved on the connecting column 702, one end of the spring B703 abuts against the clamping block 701, and the other end abuts against the limiting portion 504 in the connecting hole II 503; the clamping block D606 is specifically located at the lower end of the clamping block 701, and in the locked state, the clamping block D606 abuts against the bottom of the clamping block 701.

[0024] The present embodiment provides a crutch chair, which needs to be unfolded. When the chair is used, the pressing member 304 of the push switch 3 is pressed to drive the sliding member 303 to move inside the switch body 301, and the spring A305 is compressed. The sliding member 303 drives the locking portion 306 to leave the locking hole 203 of the main support rod 2. Due to the tension of the main spring 602, the linkage rod 601 is pulled downward. The linkage rod 601 drives the push switch 3 to move downward along the main support rod 2 through the clamping block A603, and the clamping block D606 leaves the clamping block 70 first. 1, the clamping block 701 moves downward under the elastic force of the spring B703, the clamping groove 704 of the clamping block 701 leaves the auxiliary clamping hook 409 of the auxiliary seat surface 404, and the main clamping hook 705 leaves the hinge column 408 of the main seat surface 403, and the seat surface locking structure 7 releases the lock on the seat surface; after the lock is released, the clamping block B604 contacts the upper end of the upper sliding member 402 and pushes the upper sliding member 402 to move downward along the main support rod 2, and the clamping block E607 contacts the upper end of the lower sliding member 502 and pushes the lower sliding member 502 to move along the main support rod 2. The support rod 2 moves downward, the upper sliding member 402 moves to drive the main support rod 405 of the seat surface to unfold, and the main support rod 405 of the seat surface drives the auxiliary support rod 406 of the seat surface to unfold, and gradually unfold the entire seat surface, after the upper sliding member 402 moves to the top of the lower fixing member 501, the positioning pin 407 is inserted into the positioning hole 505 and fixed; the lower sliding member 502 moves to drive the connecting rod A506, the connecting rod B507, the connecting rod C508, and the connecting rod D509 to unfold, and drive the support rod A510 and the support rod B511 to flip downward. , support rod C512 and support rod D513 move downward and unfold. After unfolding, support rod A510 and support rod C512 are in a straight line structure, support rod B511 and support rod D513 are in a straight line structure. After unfolding, press switch 3 to move to the locking hole 203 at the lower end. The locking part 306 pops out into the locking hole 203 under the action of spring A305, locking the unfolded state. After unfolding, it can be used as a chair (the locking effect can be achieved without the locking hole 203, and it is not easy to retract upward under the pulling force of the main spring 602).

[0025] The present embodiment provides a crutch chair, which needs to be folded up for use as a crutch. After pressing the pressing piece 304 of the pressing switch 3 to disengage the locking portion 306 from the locking hole 203 of the main support rod 2, the pressing switch 3 is pulled upward by hand, and the pressing switch 3 drives the block A603 of the linkage rod 601 to move upward, and the block C605 contacts the lower end of the upper sliding piece 402 and pushes the upper sliding piece 402 to move upward along the main support rod 2. After the upper sliding piece 402 moves, it drives the main support rod 401 of the chair surface to move upward. 5. The auxiliary support rod 406 of the seat surface is folded to realize the folding of the seat surface, and the block F608 contacts the lower end of the lower sliding member 502 and pushes the lower sliding member 502 to move upward along the main support rod 2. The movement of the lower sliding member 502 drives the connecting rods A506, B507, C508, and D509 to fold, and drives the supporting rods A510 and B511 to flip upward and close to the main support rod 2, and the supporting rods C512 and D513 are opened from the U-shaped opening. The seat is retracted from the U-shaped opening into the support rods A510 and B511, and the connecting rods C508 and D509 are retracted from the U-shaped opening into the support rods C512 and D513. When the push switch 3 moves to the locking hole 203 near the handle 1, the locking portion 306 in the push switch 3 pops out into the locking hole 203 under the action of the spring A305, locking the folded state. At this time, the bottom of the seat is close to the main support rod 2, and the folded support rod is located at the other side of the main support rod 2. On the side, at this time, the card block D606 pushes the bottom of the card block 701, and the spring B703 is compressed, so that the card block 701 moves to the lockable position of the chair surface. At this time, the main hook 705 will hook the hinge column 408 at the lower end of the main chair surface 403, and the auxiliary hook 409 of the auxiliary chair surface 404 is inserted into the card slot 704 of the card block 701 to complete the locking. The folded chair surface will wrap the folded support rod, and the side baffle 412 of the auxiliary chair surface 404 will block the support rod to prevent shaking. After folding, it can be used as a crutch. Example

[0026] Please refer to Fig. 9 , Fig.10 , a crutch chair provided in this embodiment has the following differences compared with the technical solution of embodiment 1: a push switch 3 is fixedly connected to an upper fixing member 401, a card block groove 9 is provided on one side of the inner wall of the switch body 301, the push member 304 is a button, a button accommodating cavity 316 is provided on the switch body 301, hinge holes 317 are provided on both sides of the button and the button accommodating cavity 316, the button is arranged in the button accommodating cavity 316 and is hinged to the switch body 301, a spring connection 318 is provided at the upper end of the button accommodating cavity 316, a spring hole 319 is provided at the upper end of the button, and a card hook 320 is provided at the lower end, one end of the spring is placed in the spring hole 319, and the other end is against the spring connection 318, a convex block is provided in the switch body 301, a card block A603 at the top of the linkage rod 601 is provided with an inclined surface at the top, and a moving block is sleeved on the main support rod 2 below the lower sliding member 502, and the moving block is connected and fixed to the bottom of the linkage rod 601.

[0027] The present embodiment provides a crutch chair, which needs to be unfolded. When the chair is used, the button is pressed to push the internal spring, and the hook 320 is lifted to release the lock on the block A603 on the linkage rod 601. The block D606 of the linkage rod 601 first leaves the bottom of the clamping block 701, and the seat surface locking structure 7 releases the lock on the seat surface. The linkage rod 601 drives the upper sliding member 402 and the lower sliding member 502 to move. The specific principle is the same as that in the embodiment 1, except that the pressing switch 3 does not move with the linkage rod 601. 1 movement; when it is necessary to fold it up and use it as a crutch, push the moving block upward with your hand, the moving block drives the linkage rod 601 to move upward, the card block C605 drives the upper sliding member 402 to move upward along the main support rod 2, thereby driving the seat surface and the support rod to fold. The specific principle is the same as that in Example 1, the only difference is that when the card block A603 moves to the protrusion in the switch body 301, the inclined surface on the top of the card block A603 presses against the protrusion and then slides into the card hook 320 of the button, completing the locking of the folded state. Example

[0028] Please refer to Fig. 9 The crutch chair provided in this embodiment has the following differences compared with the technical solution of Embodiment 2: a telescopic rod 13 is provided inside the upper end of the main support rod 2, and a bite portion 12 for fixing the telescopic rod 13 is also provided at the upper end of the push switch 3, and the two sides of the bite portion 12 are connected by a connecting pin 1201, and a cam handle 1202 for switching the bite portion 12 is provided on one side of the connecting pin 1201. The cam handle 1202 is rotated to put the bite portion 12 in an open state, and the telescopic rod 13 is moved up and down to a required size. The cam handle 1202 is rotated to make the bite portion 12 bite tightly to lock the telescopic rod 13. Example

[0029] Please refer to Fig. 9 The crutch chair provided in this embodiment has the following differences compared with the technical solution of Embodiment 2: the moving block on the main support rod 2 below the lower sliding member 502 is the same push switch 3 as that in Embodiment 1, and a locking hole 203 is also provided at the lower end of the main support rod 2, and a card block G is also provided at the lower end of the linkage rod 601, and the card block G is connected to the push switch 3 at the bottom.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crutch chair, characterized in that: It includes handles, main support rods, push switches, seat folding structure, support folding structure, folding linkage structure, and seat locking structure. The handle is installed and connected to the top end of the main support rod; A receiving groove is provided on one side of the main support rod; The push switch is sleeved on the main support rod, and the push switch includes a switch body, a pressing member, and a spring; The seat folding structure comprises an upper fixing part, an upper sliding part, a main seat, a secondary seat, a main seat support rod and a secondary seat support rod, wherein the upper fixing part and the upper sliding part are sleeved on the main support rod, the upper fixing part is fixed to the main support rod, and the main seat, the secondary seat, the main seat support rod and the secondary seat support rod are automatically unfolded and folded when the upper fixing part and the upper sliding part are away from and close to each other; The support and folding structure comprises a lower fixing member, a lower sliding member, and a secondary supporting rod, wherein the lower fixing member and the lower sliding member are sleeved on the main supporting rod, the lower fixing member is fixed to the main supporting rod, a channel for a card block to pass through is provided on one side of the lower fixing member, the upper sliding member is arranged between the upper fixing member and the lower fixing member, the lower sliding member is arranged at the lower end of the lower fixing member, and the secondary supporting rod is automatically unfolded and folded when the lower fixing member and the lower sliding member are away from and close to each other; The folding linkage structure includes a linkage rod and a main spring. The linkage rod is arranged in the accommodating groove of the main support rod. A block A connected to the push switch is provided at the top of the linkage rod. The linkage rod is also provided with a plurality of blocks, which are respectively located at the upper and lower ends of the upper sliding member and the lower sliding member. One end of the main spring is fixed to the bottom of the main support rod, and the other end is connected to the bottom end of the linkage rod.

2. The crutch chair according to claim 1, characterized in that: The push switch also includes a switch cover, a sliding component, and a locking portion, and a locking hole is provided on the main support rod; a center hole is provided on the switch cover, and a main connecting column is provided at one end of the switch cover close to the pressing component, and two secondary connecting columns are provided at the other end; a accommodating cavity is provided in the switch body, a pressing groove is provided on one side of the accommodating cavity, and a spring accommodating cavity is provided on the other side, the sliding component is placed in the accommodating cavity, the pressing component is placed in the pressing groove, and the spring is placed in the spring accommodating cavity; a center column is also provided in the switch body, a center hole is provided on the center column, the center column is provided with a connecting hole I for connecting the linkage rod, and a locking groove is provided on one side of the center column; two ends of the sliding component are respectively fixedly connected to the pressing component and the locking portion, the sliding component is provided with a center hole, a guide groove II, and two positioning rods, the guide groove II is sleeved on the main connecting column, and the outer sides of the two positioning rods respectively abut against the two secondary connecting columns; one end of the spring abuts against the portion between the two positioning rods, and the other end abuts against the side wall of the switch body.

3. The crutch chair according to claim 1, characterized in that: The push switch is fixedly connected to the upper fixing piece, and a block groove is provided on one side of the switch body, the upper fixing piece, and the lower fixing piece. The push piece is a button, and a button accommodating cavity is provided on the switch body. The button and both sides of the button accommodating cavity are provided with hinge holes. The button is arranged in the button accommodating cavity and is hinged to the switch body. A spring connection is provided at the upper end of the button accommodating cavity, a spring hole is provided at the upper end of the button, and a clamping hook is provided at the lower end. One end of the spring is placed in the spring hole, and the other end is against the spring connection. The top of the block A at the top end of the linkage rod is provided with an inclined surface.

4. The crutch chair according to claim 3, characterized in that: A telescopic rod is provided inside the upper end of the main support rod, and a bite portion for fixing the telescopic rod is also provided at the upper end of the push switch. The two sides of the bite portion are connected by a connecting pin, and a cam handle for switching the bite portion is provided on one side of the connecting pin.

5. The crutch chair according to claim 2 or 3, characterized in that: The two ends of the main seat surface are respectively hinged to the upper fixing part and one end of the main support rod of the seat surface, the auxiliary seat surfaces are respectively hinged to the two sides of the main seat surface, the bottom of the auxiliary seat surface is hinged to one end of the auxiliary support rod of the seat surface, the other end of the main support rod of the seat surface is hinged to the upper sliding part, and the two sides of the main support rod of the seat surface are hinged to one end of the auxiliary support rod of the seat surface.

6. The crutch chair according to claim 1, characterized in that: The seat surface locking structure includes a clamping block, a connecting column, and a spring B. The clamping block is sleeved on the main support rod, and clamping grooves are provided on both sides of the clamping block. A main clamping hook is provided at one end of the clamping block, and a secondary clamping hook is provided at the bottom of the secondary seat surface. A clamping structure is provided at the bottom of the main seat surface, and the clamping groove cooperates with the secondary clamping hook to realize seat surface locking, and the main clamping hook and the clamping structure at the bottom of the main seat surface cooperate to realize seat surface locking; a connecting hole II is provided on the lower fixing member, and a limiting portion is provided on the inner wall of the connecting hole II; a clamping portion is provided at the upper end of the connecting column, and the lower end of the connecting column is fixed to the clamping block after passing through the connecting hole II, and the clamping portion of the connecting column abuts on the limiting portion in the connecting hole II; the spring B is sleeved on the connecting column, one end of the spring B abuts against the clamping block, and the other end abuts against the limiting portion in the connecting hole II; a clamping block D is also provided on the linkage rod, and the clamping block D is at the lower end of the clamping block, and the clamping block D abuts against the bottom of the clamping block in the locked state.

7. The crutch chair according to claim 6, characterized in that: The main support rod is provided with a guide groove I, and the push switch, the upper fixing member, the lower fixing member, the clamping block and the lower sliding member are all provided with guide blocks, and the guide blocks are placed in the guide groove I.

8. The crutch chair according to claim 1, characterized in that: The supporting folding structure also includes connecting rod A, connecting rod B, connecting rod C, and connecting rod D. The secondary supporting rods include support rod A, support rod B, support rod C, and support rod D. The upper ends of support rod A and support rod B are hinged to the lower fixing member, and the lower ends are hinged to the upper ends of support rod C and support rod D. One ends of connecting rod A, connecting rod B, connecting rod C, and connecting rod D are hinged to the lower sliding member, and the other ends are respectively hinged to the rod bodies of support rod A, support rod B, support rod C, and support rod D. The support rod A, support rod B, support rod C, and support rod D are U-shaped tubes. When folded, connecting rod C and connecting rod D are retracted into support rod C and support rod D from the U-shaped opening, and support rod C and support rod D are retracted into support rod A and support rod B from the U-shaped opening.

9. The crutch chair according to claim 1, characterized in that: The bottom of the main seat surface is hinged to the upper fixing member through a hinge column, a torsion spring is sleeved on the hinge column, and the supporting legs of the torsion spring are respectively against the bottom of the main seat surface and the upper fixing member.

10. The crutch chair according to claim 5, characterized in that: The two ends of the seat surface auxiliary support rod are provided with waist-shaped holes, and the two ends of the seat surface auxiliary support rod are hinged with the connecting seat through the waist-shaped holes. The connecting seat at the upper end is movably connected with the auxiliary seat surface through a pressure plate fixed at the bottom of the auxiliary seat surface, and the bottom of the connecting seat at the lower end is hinged with the side of the main support rod of the seat surface.

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