Multifunctional chair

Abstract

The utility model discloses a multifunctional chair, which comprises: a cushion, the bottom of the cushion is provided with a support structure, and the left and right sides of the cushion are both provided with armrests; the backrest structure comprises an outer backrest and an inner backrest, the outer backrest is arranged on the rear side of the cushion, the inner backrest is arranged on the front side of the outer backrest, the inner backrest is of a split structure and comprises a base part, a main body part and a movable part, the base part is arranged on the lower portion of the outer backrest, the lower end of the main body part is hinged to the upper end of the base part, and the lower end of the movable part is hinged to the upper end of the main body part; the main body part can be put down forwards and is jointly supported by the base part and the movable part; the protection structure has an opening state for protecting children and a folding state for avoiding adults; the first locking structure capable of being unlocked is arranged between the movable part and the outer backrest, and the first locking structure is used for limiting the main body part from being put down forwards. The multifunctional chair is not only suitable for adults to have meals, but also suitable for young children to have meals.

Description

Technical Field

[0001] This application relates to the technical field of furniture, and particularly relates to a multifunctional chair. Background Art

[0002] In daily life, chairs are usually used when people dine around a dining table. Among them, since children at a relatively young age have limited height and it is necessary to prevent children from falling off the chair, therefore, the existing chairs for dining are usually divided into adult models and children's models. The seat cushion height of the children's model chair is relatively high, so that children at a relatively young age can reach the dining table, and the children's model chair is provided with a protection structure to prevent children from falling off the chair. However, whether in a household or commercial setting, the utilization rate of the children's model chair is not high and it will occupy space. Specifically, in a household setting, when the child grows up, the children's model chair is no longer needed; in a commercial setting, when the customers coming to dine do not bring children at a relatively young age, the children's model chair is also not needed.

[0003] In the related art, an adult model chair with a retractable protection structure is proposed. Although the provided retractable protection structure can prevent children from falling off the chair, however, the height difference between children at a relatively young age and adults is relatively large. When a child at a relatively young age sits on the adult model chair, there is a problem that the child cannot reach the dining table. Therefore, the above-mentioned adult model chair with a retractable protection structure is not suitable for children at a relatively young age to dine. Utility Model Content

[0004] This application aims to at least solve one of the technical problems existing in the prior art. For this purpose, this application proposes a multifunctional chair, which is suitable not only for adults to dine, but also for children at a relatively young age to dine.

[0005] The multifunctional chair according to an embodiment of this application includes: a seat cushion, a support structure is provided at the bottom of the seat cushion, and armrests are provided on both the left and right sides of the seat cushion; a backrest structure, including an outer backrest and an inner backrest, the outer backrest is provided at the rear side of the seat cushion, the inner backrest is provided at the front side of the outer backrest, the inner backrest is a split structure, the inner backrest includes a base portion, a main body portion and a movable portion, the base portion is provided at the lower part of the outer backrest, the lower end of the main body portion is hinged to the upper end of the base portion, and the lower end of the movable portion is hinged to the upper end of the main body portion, so that the main body portion can be laid forward and supported jointly by the base portion and the movable portion; a protection structure, having an open state for protecting children and a retracted state for avoiding adults; a first lockable locking structure is provided between the movable portion and the outer backrest, and the first locking structure is used to limit the main body portion from being laid forward.

[0006] The multi-functional chair according to the embodiments of the present application has at least the following beneficial effects: When a relatively young child is dining, unlock the first locking structure, lay the main body forward, and make the end of the movable part away from the main body abut against the top of the seat cushion, so that the base and the movable part jointly support the main body. Then, switch the protection structure to the open state. At this time, the child dining is supported by the main body, so that the child dining can reach the dining table; When an adult is dining, reset the main body and the movable part and restore the locking of the first locking structure. Then, switch the protection structure to the retracted state. At this time, the adult dining is supported by the seat cushion. It can be seen that, compared with the prior art, the multi-functional chair according to the embodiments of the present application is applicable not only to adults dining, but also to relatively young children dining.

[0007] According to some embodiments of the present application, the first locking structure includes a first magnetic part and a second magnetic part that can attract each other. The first magnetic part is arranged on the top of the movable part. The upper part of the outer backrest has an extension part extending forward to the top of the movable part, and the second magnetic part is arranged at the bottom of the extension part.

[0008] According to some embodiments of the present application, a third magnetic part that can attract the first magnetic part is arranged on the seat cushion corresponding to the movable part.

[0009] According to some embodiments of the present application, the first locking structure includes a spherical limiting part. The upper part of the outer backrest has an extension part extending forward to the top of the movable part. One of the top of the movable part and the bottom of the extension part is provided with the spherical limiting part, and the other is provided with a first clamping groove that cooperates with the spherical limiting part for limiting.

[0010] According to some embodiments of the present application, the spherical limiting part is arranged on the top of the movable part, and a second clamping groove that can cooperate with the spherical limiting part for limiting is arranged on the seat cushion corresponding to the movable part.

[0011] According to some embodiments of the present application, the protection structure includes a protection rod and two swing arms. A connecting part is arranged below each of the two armrests. The two swing arms are respectively located on the left and right sides of the seat cushion. The swing arms have connecting ends, and the connecting ends of the two swing arms are respectively hinged to the two connecting parts. The free ends of the two swing arms are respectively connected to both ends of the protection rod. A second locking structure that can be unlocked is arranged between the middle of the swing arm and the armrest. The second locking structure is used to lock the protection structure in the open state.

[0012] According to some embodiments of the present application, the second locking structure includes a bolt, a compression spring, and a sleeve with openings at both ends. A threaded through-hole is provided in the middle of the swing arm. The outer peripheral wall of the sleeve has a threaded connection structure and is threadedly connected to the threaded through-hole. The bolt is movably inserted into the sleeve along the axial direction of the sleeve. A first limiting portion is provided on the part of the bolt located inside the sleeve. A second limiting portion is provided at one end of the sleeve away from the swing arm. The compression spring is sleeved on the bolt. One end of the compression spring abuts against the first limiting portion, and the other end of the compression spring abuts against the second limiting portion. The compression spring is used to provide an elastic force for driving the bolt to extend out of the threaded through-hole. At least one of the bolt and the sleeve is provided with a limiting structure for restricting the bolt from detaching from the sleeve. A plug hole for cooperating with the bolt for positioning is provided on the side of the armrest.

[0013] According to some embodiments of the present application, the second limiting portion is annular, and an avoidance opening is provided on the second limiting portion. A block is provided on the bolt and is inserted into the avoidance opening. The block and the first limiting portion are spaced apart along the axial direction of the bolt.

[0014] According to some embodiments of the present application, a pull ring for applying force is provided at one end of the bolt away from the swing arm.

[0015] According to some embodiments of the present application, a first hinge is provided between the lower end of the main body portion and the upper end of the base portion, and a second hinge is provided between the lower end of the movable portion and the upper end of the main body portion. The lower end of the main body portion is hinged to the upper end of the base portion through the first hinge, and the lower end of the movable portion is hinged to the upper end of the main body portion through the second hinge.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, where:

[0018] Figure 1 is a schematic structural diagram of a multifunctional chair according to an embodiment of the present application when it is switched to a state for adults to dine;

[0019] Figure 2 is Figure 1 a partial enlarged schematic diagram at A in

[0020] Figure 3It is a schematic structural diagram of a multifunctional chair according to an embodiment of the present application when it is switched to a state for dining by younger children;

[0021] Figure 4 It is Figure 3 a cross-sectional schematic diagram of the structure shown;

[0022] Figure 5 It is Figure 4 a partial enlarged schematic diagram at position B in

[0023] Figure 6 It is Figure 4 a partial enlarged schematic diagram at position C in

[0024] Figure 7 It is a cross-sectional schematic diagram of the second locking structure according to an embodiment of the present application.

[0025] Reference numerals:

[0026] Seat cushion 100, armrest 200, support part 210, insertion hole 220, outer backrest 300, extension part 310, inner backrest 400, base part 410, main body part 420, movable part 430, protective rod 510, swing arm 520, convex part 521, connecting part 600, support plate 710, support leg 720, pin 810, first limiting part 811, third limiting part 812, clamping block 813, compression spring 820, sleeve 830, second limiting part 831, avoidance opening 8311, fourth limiting part 832, pull ring 840, first hinge 910, second hinge 920. Detailed Description of the Embodiment

[0027] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0028] In the description of the present application, it should be understood that if the orientation description is involved, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and it is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application.

[0029] In the description of the present application, if words such as several, greater than, less than, exceeding, above, below, within, etc. appear, among them, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself.

[0030] In the description of the present application, if terms such as first and second appear, they are only used to distinguish technical features and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence of the indicated technical features.

[0031] In the description of the present application, unless otherwise clearly defined, terms such as set, install, connect, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific content of the technical solution.

[0032] The specific structure of the multifunctional chair according to the embodiments of the present application will be described in detail below. Among them, the upper, lower, top, bottom and other orientations involved in the following description need to be understood based on Figure 1 this perspective, and at the same time, these orientations are subject to the markings in the drawings.

[0033] Referring to Figures 1 to 7 , the multifunctional chair according to the embodiments of the present application includes a seat cushion 100, a backrest structure, a protection structure, and an unlockable first locking structure.

[0034] Specifically, a support structure is provided at the bottom of the seat cushion 100, armrests 200 are provided on both the left and right sides of the seat cushion 100, the backrest structure includes an outer backrest 300 and an inner backrest 400, the outer backrest 300 is provided at the rear side of the seat cushion 100, the inner backrest 400 is provided at the front side of the outer backrest 300, the inner backrest 400 is a split structure, the inner backrest 400 includes a base portion 410, a main body portion 420, and a movable portion 430, the base portion 410 is provided at the lower part of the outer backrest 300, the lower end of the main body portion 420 is hinged to the upper end of the base portion 410, and the lower end of the movable portion 430 is hinged to the upper end of the main body portion 420, so that the main body portion 420 can be folded forward and supported jointly by the base portion 410 and the movable portion 430 abutting against the seat cushion 100. The protection structure has an open state for protecting children and a retracted state for avoiding adults. The first locking structure is provided between the movable portion 430 and the outer backrest 300, and the first locking structure is used to limit the forward folding of the main body portion 420.

[0035] When a younger child is dining, unlock the first locking structure, fold the main body part 420 forward, and make the end of the movable part 430 away from the main body part 420 abut against the top of the seat cushion 100, so that the base part 410 and the movable part 430 jointly support the main body part 420. Then, switch the protective structure to the open state. At this time, the main body part 420 supports the dining child, so that the dining child can reach the dining table; when an adult is dining, reset the main body part 420 and the movable part 430 and restore the locking of the first locking structure. Then, switch the protective structure to the retracted state. At this time, the seat cushion 100 supports the dining adult. It can be seen that, compared with the prior art, the multifunctional chair according to the embodiment of the present application is not only suitable for adults to dine, but also suitable for younger children to dine.

[0036] Referring to Figure 1 , Figure 3 and Figure 4 , in some of the embodiments, the first locking structure includes a first magnetic attracting member (not shown in the figure) and a second magnetic attracting member (not shown in the figure) that can attract each other. The first magnetic attracting member is disposed on the top of the movable part 430. The upper part of the outer backrest 300 has an extension part 310 extending forward to the top of the movable part 430. The second magnetic attracting member is disposed at the bottom of the extension part 310. Its structure is simple and easy to implement. When the main body part 420 and the movable part 430 are reset to the front side of the outer backrest 300, the first magnetic attracting member and the second magnetic attracting member are aligned and can limit the main body part 420 from being folded forward.

[0037] It should be noted that, in some of the embodiments, a third magnetic attracting member (not shown in the figure) that can attract the first magnetic attracting member is disposed on the seat cushion 100 corresponding to the movable part 430. When the main body part 420 is folded forward and is jointly supported by the base part 410 and the movable part 430 abutting against the seat cushion 100, the end of the movable part 430 away from the main body part 420 abuts against the top of the seat cushion 100. At this time, the first magnetic attracting member and the third magnetic attracting member are aligned and attract each other, so as to be able to position the movable part 430, which is beneficial to improving the stability and reliability when the main body part 420 supports the child.

[0038] It should be noted that, in some of the embodiments, the first magnetic attracting member is a magnet. At this time, the second magnetic attracting member is a magnet or a metal member that can be adsorbed by the magnet. At the same time, the third magnetic attracting member is a magnet or a metal member that can be adsorbed by the magnet.

[0039] It should be noted that, in some other embodiments, the first magnetic attracting member is a metal member that can be adsorbed by the magnet. At this time, both the second magnetic attracting member and the third magnetic attracting member are magnets, which is not limited herein.

[0040] It should be noted that in some other embodiments, the first locking structure includes a spherical stopper (not shown in the figure), the upper part of the outer backrest 300 has an extension part 310 extending forward to the top of the movable part 430, one of the top of the movable part 430 and the bottom of the extension part 310 is provided with a spherical stopper, and the other is provided with a first slot (not shown in the figure) that cooperates with the spherical stopper to limit the position. When the main body 420 and the movable part 430 are reset to the front side of the outer backrest 300, the spherical stopper is inserted into the first slot and can limit the main body 420 from falling forward.

[0041] It should be noted that, in some of the embodiments, the spherical limiting portion is arranged at the top of the movable portion 430, and a second slot (not shown in the figure) that can cooperate with the spherical limiting portion for limiting is provided on the seat cushion 100 corresponding to the movable portion 430. When the main body 420 is tilted forward and supported by the base 410 and the movable portion 430 that is abutted against the seat cushion 100, one end of the movable portion 430 away from the main body 420 is abutted against the top of the seat cushion 100. At this time, the spherical limiting portion is inserted into the second slot, so that the movable portion 430 can be positioned, which is beneficial to improving the stability and reliability of the main body 420 when supporting children.

[0042] Reference Figures 1 to 4 In some embodiments, the protective structure includes a protective rod 510 and two swing arms 520. A connecting portion 600 is provided below each of the two armrests 200. The two swing arms 520 are respectively located on the left and right sides of the seat cushion 100. The swing arms 520 have connecting ends. The connecting ends of the two swing arms 520 are hinged to the two connecting portions 600 one by one. The free ends of the two swing arms 520 are connected to the two ends of the protective rod 510 one by one. An unlockable second locking structure is provided between the middle of the swing arms 520 and the armrests 200. The second locking structure is used to lock the protective structure in an open state. When a younger child is dining, the two swing arms 520 are driven to swing upward until the swing arms 520 intersect with the armrests 200 at a preset position. The protective rod 510 is then lifted and can prevent the child sitting on the main body 420 that is tilted forward from falling. At this time, the protective structure is in an open state. Finally, the protective structure can be locked in an open state by the second locking structure. When adults are dining, the second locking structure is unlocked. At this time, the two swing arms 520 swing downward under the action of their own gravity and the gravity of the protection rod 510 until the protection rod 510 is against the supporting structure at the bottom of the seat cushion 100. At this time, the protection structure is in a retracted state and will not interfere with adults sitting down.

[0043] Reference Figure 1 , Figure 3 and Figure 4, in some of these embodiments, the support structure includes a support plate 710 and a plurality of support legs 720 disposed at the bottom of the support plate 710. The support plate 710 is used to support the seat cushion 100. When the protection structure is in the retracted state, the protection rod 510 abuts against the front support leg 720.

[0044] Referring to Figure 1 , Figure 3 and Figure 4 , in some of these embodiments, one end of the armrest 200 is connected to the outer backrest 300. The other end of the armrest 200 is provided with a support portion 210 that extends downward and is used to support the armrest 200. The lower end of the support portion 210 is connected to the side of the support plate 710 or the side of the seat cushion 100. The connecting portion 600 is rod-shaped. One end of the connecting portion 600 is connected to the outer backrest 300, and the other end of the connecting portion 600 is connected to the support portion 210. The end of the swing arm 520 away from the protection rod 510 is hinged to the middle of the connecting portion 600. Of course, the end of the connecting portion 600 away from the outer backrest 300 may also be connected to the side of the support plate 710 or the side of the seat cushion 100, which is not limited herein.

[0045] It should be noted that, in some other embodiments, the connecting portion 600 may also be vertically arranged, which is not limited herein. Specifically, the lower end of the connecting portion 600 is connected to the side of the support plate 710 or the side of the seat cushion 100, and the end of the swing arm 520 away from the protection rod 510 is hinged to the upper end of the connecting portion 600.

[0046] It should be noted that, in some other embodiments, the upper end of the support portion 210 may also be connected to the middle of the armrest 200, which is not limited herein. Specifically, the end of the swing arm 520 away from the protection rod 510 is hinged to the middle of the corresponding support portion 210, and in this case, the above-mentioned connecting portion 600 does not need to be provided.

[0047] It should be noted that, in some other embodiments, the end of the swing arm 520 away from the protection rod 510 may also be hinged to the outer backrest 300. In this case, the above-mentioned connecting portion 600 does not need to be provided, which is not limited herein.

[0048] It should be noted that, in some other embodiments, the end of the swing arm 520 away from the protection rod 510 may also be hinged to the side of the support plate 710 or the side of the seat cushion 100. In this case, the above-mentioned connecting portion 600 does not need to be provided, which is not limited herein.

[0049] It should be noted that, in some other embodiments, the support structure only includes the support legs 720, that is, the above-mentioned support plate 710 is not provided, which is not limited herein.

[0050] Referring to Figures 1 to 4 and Figure 7, in some of these embodiments, the second locking structure includes a bolt 810, a compression spring 820, and a sleeve 830 with openings at both ends. A threaded through-hole (not shown in the figure) is provided in the middle of the swing arm 520. The outer peripheral wall of the sleeve 830 has a threaded connection structure and is threadedly connected to the threaded through-hole. The bolt 810 is movably inserted into the sleeve 830 along the axial direction of the sleeve 830. A first limiting portion 811 is provided on the portion of the bolt 810 located inside the sleeve 830. A second limiting portion 831 is provided at one end of the sleeve 830 away from the swing arm 520. The compression spring 820 is sleeved on the bolt 810. One end of the compression spring 820 abuts against the first limiting portion 811, and the other end of the compression spring 820 abuts against the second limiting portion 831. The compression spring 820 is used to provide an elastic force for driving the bolt 810 to extend out of the threaded through-hole. At least one of the bolt 810 and the sleeve 830 is provided with a limiting structure for restricting the bolt 810 from detaching from the sleeve 830. A plug hole 220 for cooperating with the bolt 810 for positioning is provided on the side of the armrest 200. When the protection structure is in the open state, the swing arm 520 intersects the armrest 200 at a preset position. At this time, the bolt 810 is aligned with the plug hole 220 and is inserted into the plug hole 220 under the action of the elastic force provided by the compression spring 820 to lock the protection structure in the open state. When it is necessary to switch the protection structure to the retracted state, applying force to the bolt 810 to drive the bolt 810 out of the plug hole 220 can release the locking of the second locking structure.

[0051] Specifically, the limiting structure may include a third limiting portion 812 provided at one end of the bolt 810 away from the swing arm 520. The third limiting portion 812 can cooperate with the second limiting portion 831 to restrict the bolt 810 from detaching from the sleeve 830. Of course, the limiting structure may also include a fourth limiting portion 832 provided at one end of the sleeve 830 close to the swing arm 520. The fourth limiting portion 832 can cooperate with the first limiting portion 811 to restrict the bolt 810 from detaching from the sleeve 830.

[0052] Refer to Figure 2 , in some of these embodiments, a protrusion 521 is provided on the outer side of the swing arm 520, and at least part of the above-mentioned threaded through-hole is formed on the protrusion 521.

[0053] Refer to Figure 7, in some of these embodiments, the second limiting portion 831 is annular, an avoidance opening 8311 is provided on the second limiting portion 831, a clamping block 813 is provided on the plug pin 810 and is disposed in the avoidance opening 8311, and the clamping block 813 and the first limiting portion 811 are spaced along the axial direction of the plug pin 810. When it is necessary to release the locking of the second locking structure and retract the protection structure, a force is applied to the plug pin 810 to drive the plug pin 810 out of the insertion hole 220, and the clamping block 813 is moved to the side of the second limiting portion 831 facing away from the compression spring 820, and then the plug pin 810 is rotated to displace the clamping block 813 from the avoidance opening 8311. At this time, the second locking structure can be kept in the unlocked state, that is to say, there is no need to always apply a force to the plug pin 810 to keep the plug pin 810 in a state of being retracted into the threaded through hole. During the process of the protection structure being switched from the open state to the retracted state, compared with the case where the plug pin 810 extends out of the threaded through hole, it is beneficial to prevent the plug pin 810 from interfering with the side portion of the support plate 710 or the side portion of the seat cushion 100.

[0054] Referring to Figure 2 and Figure 7 , in some of these embodiments, a pull ring 840 for applying a force is provided at one end of the plug pin 810 away from the swing arm 520, so as to facilitate the user to apply a force.

[0055] It should be noted that, in some other embodiments, the plug pin 810 can also be replaced with a positioning screw rod (not shown in the figure), which is not limited herein. Specifically, the positioning screw rod is threadedly connected to the above-mentioned threaded through hole. When the protection structure is in the open state, the swing arm 520 intersects with the armrest 200 at a preset position, and the positioning screw rod is aligned with the insertion hole 220. By screwing the positioning screw rod to make it extend into the insertion hole 220, the protection structure can be locked in the open state. At this time, the above-mentioned compression spring 820 and the sleeve 830 do not need to be provided.

[0056] Referring to Figures 4 to 6 , in some of these embodiments, a first hinge 910 is provided between the lower end of the main body portion 420 and the upper end of the base portion 410, and a second hinge 920 is provided between the lower end of the movable portion 430 and the upper end of the main body portion 420. The lower end of the main body portion 420 is hinged to the upper end of the base portion 410 through the first hinge 910, and the lower end of the movable portion 430 is hinged to the upper end of the main body portion 420 through the second hinge 920. Its structure is simple and easy to implement.

[0057] In the description of this specification, if descriptions involving reference terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", and "some examples" are mentioned, it means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0058] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A multifunctional chair, characterized in that: include: A seat cushion, wherein a support structure is provided at the bottom of the seat cushion, and armrests are provided on both sides of the seat cushion; A backrest structure, comprising an outer backrest and an inner backrest, wherein the outer backrest is arranged at the rear side of the seat cushion, and the inner backrest is arranged at the front side of the outer backrest, and the inner backrest is a split structure, and the inner backrest comprises a base, a main body and a movable part, wherein the base is arranged at the lower part of the outer backrest, the lower end of the main body is hinged to the upper end of the base, and the lower end of the movable part is hinged to the upper end of the main body, so that the main body can be laid forward and supported by the base and the movable part; A guard structure having an open state for protecting children and a stowed state for avoiding adults; An unlockable first locking structure is disposed between the movable portion and the outer backrest, and the first locking structure is used to restrict the main body from falling forward.

2. The multifunctional chair according to claim 1, characterized in that: The first locking structure includes a first magnetic member and a second magnetic member that can attract each other, the first magnetic member is arranged at the top of the movable part, the upper part of the outer backrest has an extension part extending forward to the top of the movable part, and the second magnetic member is arranged at the bottom of the extension part.

3. The multifunctional chair according to claim 2, characterized in that: A third magnetic attraction component capable of attracting the first magnetic attraction component is arranged on the seat cushion corresponding to the movable part.

4. The multifunctional chair according to claim 1, characterized in that: The first locking structure includes a spherical limiting portion, the upper portion of the outer backrest has an extension portion extending forward to the top of the movable portion, one of the top of the movable portion and the bottom of the extension portion is provided with the spherical limiting portion, and the other is provided with a first slot that cooperates with the spherical limiting portion to limit the position.

5. The multifunctional chair according to claim 4, characterized in that: The spherical limiting portion is arranged on the top of the movable portion, and a second clamping groove which can cooperate with the spherical limiting portion to limit the position is arranged on the seat cushion corresponding to the movable portion.

6. The multifunctional chair according to claim 1, characterized in that: The protective structure includes a protective rod and two swing arms. A connecting portion is provided under each of the two armrests. The two swing arms are respectively located on the left and right sides of the seat cushion. The swing arms have connecting ends. The connecting ends of the two swing arms are hinged to the two connecting portions one by one. The free ends of the two swing arms are connected to the two ends of the protective rod one by one. An unlockable second locking structure is provided between the middle part of the swing arm and the armrest. The second locking structure is used to lock the protective structure in an open state.

7. The multifunctional chair according to claim 6, characterized in that: The second locking structure includes a latch, a compression spring and a sleeve with openings at both ends, a threaded through hole being provided in the middle portion of the swing arm, an outer peripheral wall of the sleeve having a threaded connection structure and being threadedly connected to the threaded through hole, the latch being movably inserted into the sleeve along the axial direction of the sleeve, a first limiting portion being provided at the portion of the latch located in the sleeve, a second limiting portion being provided at an end of the sleeve away from the swing arm, the compression spring being sleeved on the latch, one end of the compression spring being abutted against the first limiting portion, and the other end of the compression spring being abutted against the second limiting portion, the compression spring being used to provide an elastic force for driving the latch to extend out of the threaded through hole, at least one of the latch and the sleeve being provided with a limiting structure for limiting the latch from being separated from the sleeve, and a plug-in hole for cooperating with the latch for positioning is provided on the side portion of the handrail.

8. The multifunctional chair according to claim 7, characterized in that: The second limiting portion is annular, and is provided with an escape opening. The latch is provided with a clamping block penetrating the escape opening, and the clamping block and the first limiting portion are spaced apart from each other along the axial direction of the latch.

9. The multifunctional chair according to claim 7, characterized in that: A pull ring for applying force is arranged at one end of the latch away from the swing arm.

10. The multifunctional chair according to claim 1, characterized in that: A first hinge is provided between the lower end of the main body and the upper end of the base, a second hinge is provided between the lower end of the movable part and the upper end of the main body, the lower end of the main body is hinged to the upper end of the base through the first hinge, and the lower end of the movable part is hinged to the upper end of the main body through the second hinge.

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