High chair

Abstract

This invention relates to a high chair, comprising a seat frame, a first backrest assembly, and a second backrest assembly. The seat frame includes a first support frame and a first seat plate mounted on the support frame. The first backrest assembly is detachably fixedly connected to the seat frame and includes a first backrest portion, a retaining portion, and a first connecting portion for connecting to the seat frame. The second backrest assembly is detachably connected to the seat frame and includes a second backrest portion and a second connecting portion for connecting to the seat frame. The seat frame can be connected to either the first backrest assembly or the second backrest assembly. When the first backrest assembly is fixedly connected to the seat frame, the high chair is in a first usage mode; when the second backrest assembly is fixedly connected to the seat frame, the high chair is in a second usage mode; and when neither the first nor the second backrest assembly is connected to the first seat plate, the high chair is in a third usage mode.

Description

Technical Field

[0001] This invention relates to the technical field of seating, and in particular to a high chair. Prior Technology

[0002] High chairs for children have become increasingly popular with parents in recent years, as they make eating easier for children and help cultivate good eating habits. However, most high chairs on the market currently have limited functionality and are only suitable for very young children, resulting in a short lifespan and low product utilization. Summary of the Invention

[0003] Therefore, it is necessary to provide a high chair with multiple usage modes that can well meet the eating needs of children or adults of different ages and has a wider range of usage scenarios.

[0004] This invention provides a high chair, comprising: a seat frame including a first support frame and a first seat plate mounted on the first support frame, the first seat plate being provided with a mounting bracket; a first backrest assembly for detachably connecting to the seat frame, the first backrest assembly including a first connecting portion for connecting to the seat frame; and a second backrest assembly for detachably connecting to the seat frame, the second backrest assembly including a second backrest portion and a second connecting portion for connecting to the seat frame; wherein the seat frame can be connected to one of the first backrest assembly and the second backrest assembly; when the first backrest assembly is fixedly connected to the seat frame, the high chair is in a first usage mode; when the second backrest assembly is fixedly connected to the seat frame, the high chair is in a second usage mode; and when neither the first backrest assembly nor the second backrest assembly is connected to the first seat plate, the high chair is in a third usage mode. The mounting bracket is used to form a backrest engagement portion, the first connecting portion and the second connecting portion being inserted into the backrest engagement portion.

[0005] According to one embodiment, the backrest joint includes a first joint for engaging with the first backrest assembly, the mounting bracket and the first seat plate forming the first joint; the first connecting portion includes a first vertical extension and a first longitudinal extension that are connected to each other and arranged at an angle to each other, the first longitudinal extension being used to insert into the first joint.

[0006] According to one embodiment, an elastic finger is provided on the first longitudinal extension, and an opening corresponding to the elastic finger is provided on the side wall of the first joint. When the first longitudinal extension is inserted into the first joint, the elastic protrusion of the elastic finger can slide into the opening.

[0007] According to one embodiment, the connection between the first longitudinal extension and the first vertical extension is bent to form a locking recess. When the first longitudinal extension is inserted into the first joint, the locking recess engages with the edge of the seat frame.

[0008] According to one embodiment, the backrest engagement portion includes a second engagement portion for engaging with the second backrest assembly. The second engagement portion is formed within the mounting bracket. The second connecting portion includes a second vertical extension portion and a second longitudinal extension portion that are interconnected and angled to each other. The second longitudinal extension portion is inserted into the second engagement portion. One end of the second vertical extension portion away from the second longitudinal extension portion is fixedly connected to the second backrest portion, and the other end of the second longitudinal extension portion away from the second vertical extension portion is inserted into the second engagement portion.

[0009] According to one embodiment, the high chair further includes a locking mechanism, the locking mechanism including a locking member movably disposed on the seat frame, and a locking hole provided on the second longitudinal extension. The locking member has a first locking position and a first unlocking position. When the second longitudinal extension is inserted into the second engagement portion, if the locking member is in the first locking position, the locking member can be inserted into the locking hole; if the locking member is in the first unlocking position, the locking member can disengage from the locking hole.

[0010] According to one embodiment, the locking mechanism further includes a release member drivenly connected to the locking member, the release member being operable to move the locking member to the first release position. An elongated mounting groove is formed in the mounting bracket or between the mounting bracket and the first base plate, the release member being disposed within the mounting groove and movable along the extension direction of the mounting groove.

[0011] According to one embodiment, the back-mounted engagement portion includes a slot for engaging with the first connecting portion and a plug-in channel for engaging with the second back-mounted component.

[0012] According to one embodiment, the back-mounted joint extends along the longitudinal direction of the first seat plate.

[0013] According to one embodiment, the backrest engagement portion includes a first engagement portion for engaging with the first connecting portion and a second engagement portion for engaging with the second backrest assembly. Both the first engagement portion and the second engagement portion extend along the longitudinal direction of the first seat plate, and the second engagement portion is spaced apart from the first engagement portion in the transverse direction of the first seat plate; or the first engagement portion extends along the longitudinal direction of the first seat plate, and the second engagement portion extends along the transverse direction of the first seat plate.

[0014] In another aspect, the present invention provides a high chair, comprising: a second support frame including a first support frame, a second support frame, and a locking mechanism, wherein one end of the first support frame and one end of the second support frame are pivotally connected; a second seat plate disposed between the first support frame and the second support frame; a first backrest assembly for detachably connecting to the second support frame, the first backrest assembly including a seat portion and a first backrest portion; and a second backrest assembly for detachably connecting to the second support frame. The second support frame is capable of being connected to either the first backrest assembly or the second backrest assembly. When the first backrest assembly is mounted on the second support frame and is in a first pivot position, the high chair is in a first usage mode. When the first backrest assembly is mounted on the second support frame and is in a second pivot position, the high chair is in a second usage mode. When the second backrest assembly is mounted on the second support frame, the high chair is in a third usage mode. The locking mechanism is used to lock the second support frame in an unfolded state or to release the locking of the second support frame in the unfolded state.

[0015] According to one embodiment, the locking mechanism includes a first locking part and a second locking part. The first locking part is operably disposed on the second base plate, and the second locking part is disposed on the second support frame. The first locking part can engage with the second locking part to lock the second support frame in an unfolded state. The first locking part can be operated to disengage from the second locking part to release the locking of the second support frame in the unfolded state.

[0016] According to one embodiment, the second support frame further includes a first connecting frame and a second connecting frame pivotally connected to each other. The first connecting frame is also pivotally connected to the first support frame, and the second connecting frame is also pivotally connected to the second support frame. When the second support frame is in the unfolded state, the second seat plate is mounted above the first connecting frame and the second connecting frame.

[0017] In another aspect, the present invention provides a high chair, comprising: a second support frame including a first support frame and a second support frame, one end of the first support frame and one end of the second support frame being pivotally connected; a second seat plate disposed between the first support frame and the second support frame; a first backrest assembly for detachably connecting to the second support frame, the first backrest assembly including a seat portion and a first backrest portion; and a second backrest assembly for detachably connecting to the second support frame. The second support frame can be connected to either the first backrest assembly or the second backrest assembly. When the first backrest assembly is installed on the second support frame and is in a first pivot position, the high chair is in a first usage mode. When the second backrest assembly is installed on the second support frame, the high chair is in a third usage mode.

[0018] According to one embodiment, the second support frame further includes a locking mechanism, which is used to lock the second support frame in an unfolded state or release the locking of the second support frame in the unfolded state, thereby enabling the second support frame to switch between an unfolded state and a retracted state.

[0019] According to one embodiment, the locking mechanism includes a first locking part and a second locking part. The first locking part is operably disposed on the second base plate, and the second locking part is disposed on the second support frame. The first locking part can engage with the second locking part to lock the second support frame in an unfolded state. The first locking part can be operated to disengage from the second locking part to release the locking of the second support frame in the unfolded state.

[0020] According to one embodiment, the second support frame further includes a first connecting frame and a second connecting frame pivotally connected to each other. The first connecting frame is also pivotally connected to the first support frame, and the second connecting frame is also pivotally connected to the second support frame. When the second support frame is in the unfolded state, the second seat plate is mounted above the first connecting frame and the second connecting frame.

[0021] According to one embodiment, the second support frame further includes two second support rods disposed on both sides of the second seat plate, the upper parts of the two second support rods being bent toward the direction close to the second seat plate and pivotally connected to the upper end of the first support frame.

[0022] According to one embodiment, the first backrest assembly is a one-piece molded child seat.

[0023] In another aspect, the present invention provides a high chair, including a seat frame, a first backrest assembly, and a second backrest assembly. The seat frame includes a first support frame and a first seat plate mounted on the support frame. The first backrest assembly is detachably fixedly connected to the seat frame and includes a first backrest portion, a retaining portion, and a first connecting portion for connecting to the seat frame. The second backrest assembly is detachably connected to the seat frame and includes a second backrest portion and a second connecting portion for connecting to the seat frame. The seat frame can be connected to either the first backrest assembly or the second backrest assembly. When the first backrest assembly is fixedly connected to the seat frame, the high chair is in a first usage mode; when the second backrest assembly is fixedly connected to the seat frame, the high chair is in a second usage mode; and when neither the first nor the second backrest assembly is connected to the first seat plate, the high chair is in a third usage mode.

[0024] The aforementioned high chair can be combined with a first backrest assembly having a first backrest and a side rail to form a first usage mode, serving as a high chair for younger infants (e.g., 6 months to 3 years old). The high chair can also be connected to a second backrest assembly having a second backrest to form a second usage mode, serving as a growth chair for older children (e.g., 3 to 12 years old). The high chair can also be used independently of the first and second backrests, serving as an adult chair for older children and adults (12 years and older). Thus, the high chair can effectively meet the eating needs of children or adults of different ages by switching between multiple usage modes, making its use more versatile.

[0025] According to one embodiment, the enclosure includes a transverse enclosure extending in the transverse direction of the first backing component and a lateral enclosure extending in the longitudinal direction of the first backing component, wherein at least one of the transverse enclosure, the lateral enclosure, and the first backing component is provided with the first connecting portion.

[0026] According to one embodiment, the first connecting portion includes a first vertical extension portion and a first longitudinal extension portion that are connected to each other and arranged at an angle to each other. The seat frame is provided with a slot corresponding to the first longitudinal extension portion, and the first longitudinal extension portion is used to be inserted into the slot.

[0027] According to one embodiment, the first longitudinal extension is provided with an elastic finger, and the slot wall is provided with an opening corresponding to the elastic finger. When the first longitudinal extension is inserted into the slot, the elastic protrusion of the elastic finger can slide into the opening.

[0028] According to one embodiment, the connection between the first longitudinal extension and the first vertical extension is bent to form a locking recess. When the first longitudinal extension is inserted into the slot, the locking recess engages with the edge of the seat frame.

[0029] According to one embodiment, the second connecting portion includes a second vertical extension portion and a second longitudinal extension portion that are connected to each other and arranged at an angle to each other. One end of the second vertical extension portion away from the second longitudinal extension portion is fixedly connected to the second backrest portion, and the other end of the second longitudinal extension portion away from the second vertical extension portion is used to be inserted into the insertion channel of the seat frame.

[0030] According to one embodiment, the high chair further includes a locking mechanism, the locking mechanism including a locking member movably disposed on the seat frame, a locking hole provided on the second longitudinal extension, the locking member having a first locking position and a first unlocking position, when the second longitudinal extension is inserted into the insertion channel, if the locking member is in the first locking position, the locking member can be inserted into the locking hole; if the locking member is in the first unlocking position, the locking member can disengage from the locking hole.

[0031] According to one embodiment, the locking mechanism further includes a release member that is drivenly connected to the locking member, the release member being operable to move the locking member to the first release position.

[0032] According to one embodiment, the locking mechanism further includes a first reset member adapted to bias the locking member toward the first locking position.

[0033] According to one embodiment, the first support frame includes a plurality of legs and a foot pedal connected between two of the plurality of legs. The foot pedal includes a foot pedal body and foot pedal connectors connected to both ends of the foot pedal body. The two legs are respectively provided with a plurality of adjustment holes, which are arranged opposite to each other on the two legs. The high chair also includes an adjustment member, which passes through the two foot pedal connectors and is inserted into two opposite adjustment holes among the plurality of adjustment holes to fix the foot pedal body at a certain position between the two legs.

[0034] According to one embodiment, it further includes a plate portion detachably connected to the enclosure portion or the first backrest portion. The plate portion includes a plate body and a plate connecting portion protruding from both sides of the plate body. The plate connecting portion is provided with a plug-in end, and the enclosure portion or the first backrest portion is provided with a plug-in groove that can be plugged into the plug-in end.

[0035] In another aspect, the present invention provides a high chair, which, according to one embodiment, includes a first support frame and a first seat. The first support frame includes a plurality of legs and a seat frame. The seat frame is connected to the upper ends of the legs. The first seat is mounted on the first support frame. The first support frame is provided with a backrest engagement portion, which is used to connect with a first backrest assembly or a second backrest assembly. When the backrest engagement portion is connected with the first backrest assembly, the high chair is in a first usage mode; when the backrest engagement portion is connected with the second backrest assembly, the high chair is in a second usage mode; and when the backrest engagement portion is not connected with either the first or second backrest assembly, the high chair is in a third usage mode.

[0036] According to one embodiment, the back-joining portion is a joint groove provided on the first support frame, and the direction of the joint groove is parallel to the plane of the first seat plate.

[0037] According to one embodiment, the first backrest assembly and the second backrest assembly share the engagement groove, which extends along the longitudinal direction of the first seat plate.

[0038] According to one embodiment, the engagement groove includes a first engagement groove for connecting with the first backrest assembly and a second engagement groove for connecting with the second backrest assembly. When the first engagement groove is not connected with the first backrest assembly and the second engagement groove is not connected with the second backrest assembly, the high chair is in a third usage mode.

[0039] According to one embodiment, both the first engagement groove and the second engagement groove extend along the longitudinal direction of the first seat plate, and the second engagement groove is spaced apart from the first engagement groove in the transverse direction of the first seat plate; or the first engagement groove extends along the longitudinal direction of the first seat plate, and the second engagement groove extends along the transverse direction of the first seat plate.

[0040] According to one embodiment, the high chair further includes a footrest, which can be fixed at different height positions relative to the support legs. When the high chair is in a first usage mode, the footrest is fixed at a first height position; when the high chair is in a second usage mode, the footrest is fixed at a second height position; and when the high chair is in a third usage mode, the footrest is fixed at a third height position.

[0041] In another aspect, the present invention provides a high chair, according to one embodiment, comprising a second support frame, a second seat, a first backrest assembly, and a second backrest assembly. The second support frame includes a first support frame and a second support frame, with one end of the first support frame and one end of the second support frame pivotally connected. The second seat is disposed between the first support frame and the second support frame. The first backrest assembly is detachably and pivotally connected to the second support frame, and includes a seat portion and a first backrest portion. The second backrest assembly is detachably connected to the second support frame. The second support frame can be connected to either the first backrest assembly or the second backrest assembly. When the first backrest assembly is installed on the second support frame and is in a first pivot position, the high chair is in a first usage mode; when the first backrest assembly is installed on the second support frame and is in a second pivot position, the high chair is in a second usage mode; and when the second backrest assembly is installed on the second support frame, the high chair is in a third usage mode.

[0042] The aforementioned high chair can be combined with a first backrest assembly having a seat and a first backrest, and with the first backrest assembly in a first pivot position, to form a first usage mode, thus serving as a chair for newborns under 6 months old. The high chair can also be combined with the first backrest assembly having a seat and a first backrest, and with the first backrest assembly in a second pivot position, to form a second usage mode, thus serving as a high chair for younger infants (e.g., 6 months to 3 years old). The high chair can also be connected to a second backrest assembly, thus serving as a growth chair for older children (3 to 12 years old). In this way, the high chair can effectively meet the feeding needs of children of different ages by switching between multiple usage modes, making its use more versatile.

[0043] According to one embodiment, the device further includes a pivot member rotatably disposed on the second support frame. One of the pivot member and the first backrest assembly has a mounting recess, and the other has a mounting protrusion. The mounting recess and the mounting protrusion cooperate to rotatably mount the first backrest assembly to the second support frame.

[0044] According to one embodiment, a disassembly mechanism is further provided on the mounting protrusion. The disassembly mechanism includes a first operating member and a locking member. The first operating member has a driving ramp. The locking member is movably disposed on the mounting protrusion and has a second locking position and a second unlocking position. The locking member includes an locking body and a protrusion protruding from the locking body. The mounting recess has a locking groove. When the locking member is in the second locking position, the locking body is engaged in the locking groove. The first operating member can be operated to push the locking member to the second unlocking position via the driving ramp. When the locking member is in the second unlocking position, the locking body disengages from the locking groove.

[0045] According to one embodiment, the disassembly mechanism further includes a second reset member, which is adapted to bias the engaging body toward the second locking position.

[0046] According to one embodiment, the mounting protrusion has limiting protrusions on both sides, and the mounting recess has limiting grooves on both side walls. When the mounting protrusion is inserted into the mounting recess, the limiting protrusions are correspondingly inserted into the limiting grooves.

[0047] According to one embodiment, one end of the first support frame has a first mounting seat, and one end of the second support frame has a second mounting seat. The first mounting seat and the second mounting seat are fastened together to form a mounting cavity. The high chair further includes an angle adjustment mechanism, which includes a limiting member, a second operating member, and a second limiting portion. The limiting member is movably disposed within the mounting cavity and has a third locking position and a third unlocking position. A first limiting portion is provided at the edge of the limiting member. The second operating member is disposed on the first mounting seat and can move along the axial direction of the first mounting seat. The second limiting portion is fixed to the pivot member, and at least a portion of the second limiting portion extends into the mounting cavity. The pivot member is rotatably disposed on the second mounting seat. When the limiting member is in the third locking position, the second limiting portion engages with the first limiting portion, and the second operating member can be operated to push the limiting member to move to the third unlocking position. When the limiting member is in the third unlocking position, the second limiting portion disengages from the first limiting portion.

[0048] According to one embodiment, the angle adjustment mechanism further includes a third reset member, which is disposed between the second mounting base and the limiting member, and is adapted to bias the limiting member to move toward the third locking position.

[0049] According to one embodiment, the second mounting base is provided with an arc-shaped limiting groove, and the second limiting part extends into the mounting cavity through the limiting groove. When the pivot member rotates relative to the second mounting base, the second limiting part moves along the limiting groove.

[0050] According to one embodiment, the second support frame further includes a first connecting frame and a second connecting frame. One side of the first connecting frame is pivotally connected to the first support frame, one side of the second connecting frame is pivotally connected to the second support frame, and the other side of the first connecting frame is pivotally connected to the other side of the second connecting frame. The second seat plate is fixedly connected to the first connecting frame. The second support frame can be switched between an extended state and a retracted state. When the second support frame is in the extended state, the second seat plate is mounted above the first connecting frame and the second connecting frame.

[0051] According to one embodiment, the system further includes a locking mechanism, which comprises a first locking portion and a second locking portion. The first locking portion is operably disposed on the second base plate. The second locking portion is disposed on the side of the second connecting frame away from the first connecting frame. The first locking portion can engage with the second locking portion to lock the second support frame in an unfolded state, and the first locking portion can be operated to disengage from the second locking portion to release the locking of the second support frame in the unfolded state.

[0052] In another aspect, the present invention provides a high chair, comprising a second support frame, a second seat plate, and a pivot member. The second support frame includes a first support frame and a second support frame, with one end of the first support frame and one end of the second support frame pivotally connected. The second seat plate is disposed between the first support frame and the second support frame. The pivot member is rotatably mounted on the second support frame and is used to engage with a first backrest assembly or a second backrest assembly to achieve the installation of the first backrest assembly or the second backrest assembly. When the first backrest assembly is mounted on the pivot member and the pivot member is in a first pivot position, the high chair is in a first usage mode; when the first backrest assembly is mounted on the pivot member and the pivot member is in a second pivot position, the high chair is in a second usage mode; and when the second backrest assembly is mounted on the pivot member, the high chair is in a third usage mode.

[0053] According to one embodiment, the high chair further includes a limiting member. The limiting member is movably disposed on the second support frame, and the limiting member has a third locking position and a third unlocking position. When the limiting member is in the third locking position, it restricts the rotation of the pivot member relative to the second support frame. When the limiting member is in the third unlocking position, it releases the rotation restriction on the pivot member, allowing the pivot member to switch between a first pivoting position and a second pivoting position.

[0054] According to one embodiment, the pivot member is switchable between a first pivot position, a second pivot position, and a third pivot position, wherein when the high chair is in the third usage mode, the pivot member is in the third pivot position.

[0055] According to one embodiment, when the bar chair is in the first usage mode or the second usage mode, the first support frame is located in front of the second support frame, and when the bar chair is in the third usage mode, the first support frame is located behind the second support frame.

[0056] According to one embodiment, the upper side of the second support frame is formed as a curved tube, which serves as an armrest when the bar chair is in the third usage mode.

[0057] According to one embodiment, the second support frame is connected to a foot pedal, which is used to support the user's feet when the bar chair is in the third usage mode. Simple Explanation of the Diagram

[0058] Figure 1 illustrates a structural schematic diagram of a high chair provided in an embodiment of the present invention, wherein the high chair is in a first usage mode.

[0059] Figure 2 shows a schematic diagram of the structure of the high chair in Figure 1 with the plate section installed.

[0060] Figure 3 illustrates a structural schematic diagram of a high chair provided in an embodiment of the present invention, wherein the high chair is in a second usage mode.

[0061] Figure 4 illustrates a structural schematic diagram of a high chair provided in an embodiment of the present invention, wherein the high chair is in a third usage mode.

[0062] Figure 5 shows an exploded view of the high chair in Figure 1.

[0063] Figure 6 shows a structural schematic diagram of the high chair in Figure 5 from another perspective.

[0064] Figure 7 shows an enlarged view of point A in Figure 6.

[0065] Figure 8 shows a structural schematic diagram of the high chair in Figure 5 from another perspective.

[0066] Figure 9 shows an enlarged view of point B in Figure 8.

[0067] Figure 10 shows an exploded view of the high chair in Figure 3.

[0068] Figure 11 shows a structural schematic diagram of the high chair in Figure 3 from another perspective.

[0069] Figure 12 shows a cross-sectional view of the high chair in Figure 11 and an enlarged view of the locking mechanism in the high chair.

[0070] Figure 13 shows an exploded view of the high chair in Figure 4.

[0071] Figure 14 shows a cross-sectional view of the high chair in Figure 4.

[0072] Figure 15 shows an enlarged view of point C in Figure 14.

[0073] Figure 16 shows an enlarged view of point D in Figure 14.

[0074] Figure 17 shows an exploded view of the high chair in Figure 2.

[0075] Figure 18 shows a structural schematic diagram of the high chair in Figure 2 from another perspective, as well as an enlarged view of the connecting fingers and engaging recesses in the high chair.

[0076] Figure 19 shows a structural schematic diagram of the high chair in Figure 4 from another perspective, as well as an enlarged view of the footrest and adjustment components in the high chair.

[0077] Figure 20 shows a schematic diagram of the adjustment mechanism in the high chair of Figure 19.

[0078] Figure 21 illustrates a structural schematic diagram of a high chair provided in another embodiment of the present invention, wherein the high chair is in a first usage mode.

[0079] Figure 22 illustrates a structural schematic diagram of a high chair provided in an embodiment of the present invention, wherein the high chair is in a second usage mode.

[0080] Figure 23 illustrates a structural schematic diagram of a high chair provided in an embodiment of the present invention, wherein the high chair is in a third usage mode.

[0081] Figure 24 shows a side view of the high chair in Figure 21 with the first backrest component omitted, where the second support frame is in the unfolded state.

[0082] Figure 25 shows a side view of the high chair in Figure 21 with the first backrest component omitted, where the second support frame is in a semi-folded state.

[0083] Figure 26 shows a side view of the high chair in Figure 21 with the first backrest component omitted, where the second support frame is in a folded-down state.

[0084] Figure 27 shows a structural schematic diagram of the high chair in Figure 24 from another perspective.

[0085] Figure 28 shows a cross-sectional view of the high chair in Figure 24.

[0086] Figure 29 shows a cross-sectional view of the high chair in Figure 25.

[0087] Figure 30 shows a schematic diagram of the structure of the second support frame and the second seat plate in the high chair of Figure 21.

[0088] Figure 31 shows a structural schematic diagram of the first backrest component in the high chair of Figure 21.

[0089] Figure 32 shows a structural schematic diagram of the first back support component of Figure 31 from another perspective.

[0090] Figure 33 shows an enlarged cross-sectional view of the first back support assembly of Figure 31 and its disassembly mechanism.

[0091] Figure 34 shows a schematic diagram of the internal structure of the disassembly mechanism in the first backing assembly of Figure 31, where the mounting protrusion is omitted.

[0092] Figure 35 shows a cross-sectional view of the disassembly mechanism of Figure 33 from another angle.

[0093] Figure 36 shows a partial enlarged view of the second support frame of Figure 30 after omitting the first mounting base.

[0094] Figure 37 shows a partial cross-sectional view of the angle adjustment mechanism in the high chair of Figure 21, with the limiting member in the third locking position.

[0095] Figure 38 shows a partial cross-sectional view of the angle adjustment mechanism in the high chair of Figure 21, with the limiting member in the third unlocking position.

[0096] Figure 39 shows an exploded view of the angle adjustment mechanism in the high chair of Figure 21. Implementation

[0097] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and do not limit the scope of protection of the invention.

[0098] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0099] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0100] This invention provides a high chair with multiple usage modes, which can well meet the eating needs of children or adults of different ages and has a wider range of usage scenarios.

[0101] The bar chair can have various structural forms. According to one embodiment, as shown in Figures 1 to 4, the bar chair includes a seat frame 100, a first backrest assembly 200, and a second backrest assembly 300. The seat frame 100 includes a first support frame 110 and a first seat plate 120 mounted on the first support frame 110.

[0102] As shown in Figure 1, the first backrest assembly 200 includes a first backrest portion 210, a retaining portion 220, and a first connecting portion 230 for connection with the seat frame 100. The first backrest portion 210 is detachably connected to the seat frame 100 via the first connecting portion 230. When the first backrest assembly 200 is connected to the seat frame 100, the high chair is in a first usage mode, namely a dining chair mode, which is suitable for infants and toddlers aged approximately 6 months to 3 years to eat in. The infants and toddlers can sit within the seating space 101 formed by the first backrest portion 210 and the retaining portion 220 without easily slipping off the high chair.

[0103] As shown in Figure 2, the front side of the first back support component 200 can also be equipped with a plate part 400 in a detachable or non-detachable manner to facilitate the placement of tableware and food for infants and young children.

[0104] As shown in Figure 3, the second backrest assembly 300 includes a second backrest portion 310 and a second connecting portion 320 for connection with the seat frame 100. The second backrest assembly 300 is detachably connected to the first seat plate 120 via the second connecting portion 320. When the second backrest assembly 300 is fixedly connected to the seat frame 100, the high chair is in a second usage mode, namely, a growth chair mode, which is mainly suitable for children aged approximately 3 to 12 years. The second backrest portion 310 does not have a guardrail, which makes it easy for children to get on and off the high chair independently, and also makes it easy for the high chair to be moved to the dining table so that children can eat at the same table with adults. Of course, the high chair in this usage mode is not limited to use as a dining chair, but can also be used by children or adults in situations such as studying or playing.

[0105] As shown in Figure 4, when neither the first backrest assembly 200 nor the second backrest assembly 300 is connected to the first seat plate 120, the high chair is in the third usage mode, namely the adult chair mode, which is suitable for children or adults aged approximately 12 years and older. Similarly, the high chair in this mode is not limited to use as a dining chair; it can also be used in various settings such as studying or playing.

[0106] Specifically, as shown in Figure 5, the enclosure 220 includes a transverse enclosure 221 extending in the transverse direction of the first backrest assembly 200 and two lateral enclosures 222 extending in the longitudinal direction of the first backrest assembly. The two lateral enclosures 222 are generally rectangular plate-shaped structures, and one side of each lateral enclosure 222 is connected to the transverse sides of the first backrest assembly 210. The transverse enclosure 221 is elongated, and both ends of the transverse enclosure 221 are connected to the sides of the two lateral enclosures 222 away from the first backrest assembly 210. Thus, the transverse enclosure 221, the two lateral enclosures 222, and the first backrest assembly 210 together enclose a seating space 101 for infants and toddlers.

[0107] At least one of the horizontal enclosure 221, the lateral enclosure 222, and the first backrest 210 is provided with a first connecting portion 230. In this embodiment, the horizontal enclosure 221 is connected to approximately the middle of one of the first connecting portions 230 (as shown in FIG. 6), and the first backrest 210 is connected to two spaced-apart first connecting portions 230 (as shown in FIG. 8). In other embodiments, the number and position of the first connecting portions 230 can be adjusted as needed. For example, one or at least two first connecting portions 230 can be connected to the underside of each lateral enclosure 222, or only one or at least two first connecting portions 230 can be connected to the underside of the first backrest 210, etc., and the present invention is not limited thereto.

[0108] As shown in Figures 6 to 9, the first connecting portion 230 includes a first vertical extension 231 and a first longitudinal extension 232 that are interconnected and arranged at an angle to each other. In this embodiment, both the first vertical extension 231 and the first longitudinal extension 232 are plate-like structures. The end of the first vertical extension 231 away from the first longitudinal extension 232 is connected to the transverse enclosure 221 or the first backrest portion 210. The seat frame 100 is provided with a slot 130 corresponding to the first longitudinal extension 232, and the first longitudinal extension 232 is used to be inserted into the slot 130.

[0109] The first longitudinal extension 232 is also provided with a slot 2321, and a flexible finger 2322 is connected to one side wall of the slot 2321. The free end of the flexible finger 2322 is provided with a flexible protrusion 2322a facing away from the first longitudinal extension 231. In addition, an opening 131 is provided on the side wall of the slot 130 away from the first seat plate 120. When the first longitudinal extension 232 is inserted into the slot 130, the flexible protrusion 2322a of the flexible finger 2322 can slide into the opening 131. This makes the connection between the first longitudinal extension 232 and the first seat plate 120 more secure, that is, makes the connection between the first backrest assembly 200 and the seat frame 100 more secure.

[0110] The connection between the first longitudinal extension 232 and the first vertical extension 231 is also bent to form a locking recess 233. When the first longitudinal extension 232 is inserted into the slot 130, the locking recess 233 engages with the edge of the first base plate 120.

[0111] In this embodiment, the first connecting portion 230 connected to the transverse barrier 221 can be made of a material with a certain elastic deformation capability, such as plastic. When the first longitudinal extensions 232 of the two first connecting portions 230 connected to the first backrest portion 210 are inserted into the slots 130 from the rear of the first base plate 120, and their corresponding engaging recesses 233 engage with the rear edge of the first base plate 120, the first connecting portion 230 connected to the transverse barrier 221 can undergo a certain elastic deformation to extend beyond the front edge of the first base plate 120 and be inserted into the slots 130 on the front side of the first base plate 120, and its corresponding engaging recesses 233 engage with the front edge of the first base plate 120. In other embodiments, the first connecting portion 230 connected to the first backrest portion 210 can also be made of a material with a certain elastic deformation capability.

[0112] The first connecting part 230, which is connected to the transverse barrier 221, can also be used to block the crotch of the infant to prevent the infant from slipping off the high chair.

[0113] Specifically, as shown in Figures 7 and 9, the first base plate 120 can be a plate-like structure made of wood or rigid plastic. A mounting bracket 117 made of plastic or steel can be fixed to the lower surface of the first base plate 120. The mounting bracket 117 and the first base plate 120 form a slot 130 for inserting the first longitudinal extension 232 (described later). In this embodiment, three slots 130 are provided, two on the rear side of the first base plate 120 and one on the front side. All three slots 130 extend along the longitudinal direction of the first base plate 120. Of course, in other embodiments, the position and number of slots 130 can be adjusted as needed. For example, the slots 130 can also extend along the transverse direction of the first base plate 120, and the position of the first connecting portion 230 can be adjusted accordingly.

[0114] As shown in Figures 10 to 12, the second connecting portion 320 includes a second vertical extension 321 and a second longitudinal extension 322 that are interconnected and arranged at an angle to each other. In this embodiment, both the second vertical extension 321 and the second longitudinal extension 322 are rod-shaped structures. The diameter of the portion of the second longitudinal extension 322 away from the second vertical extension 321 is smaller than the diameter of the other portions of the second longitudinal extension 322, so as to form an insertion end 3221 that can be inserted into the insertion channel 150 of the seat frame 100. One end of the second vertical extension 321 away from the second longitudinal extension 322 is fixedly connected to the second backrest portion 310.

[0115] Specifically, the second backing portion 310 is generally an arc-shaped plate structure. There are two second connecting portions 320 spaced apart, and two corresponding insertion channels 150 are provided. In this embodiment, two insertion channels 150 are formed within the mounting bracket 117, and both insertion channels 150 extend along the longitudinal direction of the first base plate 120. Specifically, the two slots 130 located on the rear side of the first base plate 120, as mentioned above, are located between the two insertion channels 150. In other embodiments, the position and number of insertion channels 150 can be adjusted as needed. For example, the two insertion channels 150 can be arranged along the transverse direction of the first base plate 120, and the positions of the two second connecting portions 320 can be adjusted accordingly. Alternatively, both slots 130 can extend along the longitudinal direction of the first base plate 120, and the two insertion channels 150 can extend along the transverse direction of the first base plate 120.

[0116] As shown in Figures 11 and 12, the seat frame 100 is also provided with a locking mechanism 160 for selectively locking the second connecting portion 320 relative to the first seat plate 120. Specifically, the locking mechanism 160 includes a locking member 161, a releasing member 162, and a first reset member 163. The locking member 161 is movably disposed on the seat frame 100, and a locking hole 3222 is provided on the second longitudinal extension 322. The locking member 161 has a first locking position and a first releasing position. When the second longitudinal extension 322 is inserted into the insertion channel 150, if the locking member 161 is in the first locking position, the locking member 161 can be inserted into the locking hole 3222; if the locking member 161 is in the first releasing position, the locking member 161 can disengage from the locking hole 3222. The releasing member 162 can be operated to move the locking member 161 to the first releasing position. The first reset member 163 is adapted to bias the locking member 161 to move towards the first locking position.

[0117] Each of the second longitudinal extensions 322 of the two second connecting portions 320 connected to the second backing portion 310 is provided with a locking hole 3222, and two locking mechanisms 160 are provided accordingly to engage with the two locking holes 3222 respectively. In this embodiment, the two locking holes 3222 are arranged opposite to each other, and the two locking mechanisms 160 are located between the two second longitudinal extensions 322. The following description takes one of the locking mechanisms 160 as an example.

[0118] As shown in Figures 11 and 12, the release member 162 is generally rod-shaped, with an operating protrusion 1621 approximately in the middle. A long, narrow mounting groove 170 is formed in the mounting bracket 117 or between the mounting bracket 117 and the first base plate 120. The mounting groove 170 extends approximately along the transverse direction of the first base plate 120, that is, the extension direction of the mounting groove 170 is approximately perpendicular to the extension direction of the insertion channel 150. The release member 162 is disposed within the mounting groove 170 and can move along the extension direction of the mounting groove 170. An operating port 171 is provided on the groove wall of the mounting groove 170, through which the operating protrusion 1621 of the release member 162 extends out of the mounting groove 170 for operation. The release member 162 has a first end 1622 and a second end 1623. The locking member 161 is pivotally connected to the first end 1622 of the release member 162. The locking member 161 has a hook portion 1611 away from the first end 1622. A through hole 151 is provided on the side wall of the insertion channel 150, and the mounting groove 170 communicates with the insertion channel 150 through the through hole 151. When the second longitudinal extension 322 is inserted into the insertion channel 150, the through hole 151 is opposite to the locking hole 3222. At this time, if the locking member 161 is in the first locked position, the locking member 161 is inserted into the locking hole 3222 through the through hole 151. In this embodiment, the first reset member 163 is a spring. In this embodiment, the second end 1623 of the release member 162 is provided with a sleeve protrusion 1624. The first reset member 163 is disposed in the mounting groove 170, one end of the first reset member 163 is sleeved on the sleeve protrusion 1624 and abuts against the second end 1623 of the release member 162, and the other end abuts against the groove wall of the mounting groove 170.

[0119] The specific working principle of the locking mechanism 160 is as follows.

[0120] Taking the locking mechanism 160 located on the right side in Figures 11 and 12 as an example, when the second backrest assembly 300 needs to be removed from the seat frame 100, when the operating protrusion 1621 of the release member 162 is moved in the direction away from the locking hole 3222 (i.e., the first direction D1 shown in Figure 11 or Figure 12), the locking member 161 can be driven to move along the first direction D1, and at the same time, it pivots along the second direction D2 shown in Figure 12 to disengage from the locking hole 3222. In this way, the second longitudinal extension 322 can be removed from the insertion channel 150, and the second backrest assembly 300 is removed. After the second backrest assembly 300 is removed, the external force applied to the operating protrusion 1621 is removed, and the release member 162 moves in the opposite direction of the first direction D1 under the elastic force of the first reset member 163. The locking member 161 is switched back to the first locking position under the action of the release member 162.

[0121] When the second backrest assembly 300 needs to be installed on the seat frame 100, the second longitudinal extension 322 of the second backrest assembly 300 is inserted into the insertion channel 150. The hook portion 1611 is provided with a pushing slope. During the insertion process, the second longitudinal extension 322 pushes against the pushing slope, causing the hook portion 1611 to pivot out of the locking hole 3222, so that the locking member 161 is in the first unlocking position. When the second longitudinal extension 322 is inserted into place, the through hole 151 is opposite to the locking hole 3222 of the second longitudinal extension 322. The second longitudinal extension 322 no longer exerts a pushing effect on the pushing slope. At this time, the release member 162 moves in the opposite direction of the first direction D1 under the elastic force of the first reset member 163. The locking member 161 is switched back to the first locking position under the action of the release member 162. That is, the locking member 161 is inserted into the locking hole 3222 of the second longitudinal extension 322 through the through hole 151, thereby fixing the second backrest assembly 300 to the seat frame 100.

[0122] Mounting bracket 117 is also provided with tubular reinforcing members 180 to provide more stable support for the first base plate 120. In this embodiment, there are two reinforcing members 180, which are spaced apart along the longitudinal direction of the first base plate 120.

[0123] According to an embodiment not shown in the figure, it is not necessary to simultaneously provide a slot 130 and a insertion channel 150 at the bottom of the first base plate 120; that is, a slot 130 or an insertion channel 150 can be provided only at the bottom of the first base plate 120. For ease of distinction, the slot 130 or insertion channel 150 is referred to as a mating groove, which can simultaneously engage with either the first longitudinal extension 232 or the second longitudinal extension 322. Of course, in this embodiment, the shapes of the first longitudinal extension 232 and the second longitudinal extension 322 should also be approximately the same, for example, both can be plate-shaped or rod-shaped, so that both can be inserted into the mating groove. This eliminates the need to process the slot 130 or the insertion channel 150, simplifying the process and saving costs. In this embodiment, the extension direction of the mating groove is parallel to the plane of the first base plate 120, and the mating groove extends along the longitudinal direction of the first base plate 120.

[0124] As shown in Figure 13, the first support frame 110 includes a seat frame 111 and multiple legs 112. The seat frame 111 includes interconnected support bases 1111 and leg connecting portions 1112. In this embodiment, there are two support bases 1111, which are respectively fixed to the lateral sides of the first seat plate 120. The two ends of the support bases 1111 are respectively connected to the two leg connecting portions 1112 to form a roughly U-shaped structure. In this embodiment, the support bases 1111 and the two leg connecting portions 1112 are integrally formed. The ends of the two leg connecting portions 1112 away from the support bases 1111 are respectively detachably connected to one leg 112. The connection structure between one leg connecting portion 1112 and the corresponding leg 112 will be specifically described below as an example.

[0125] As shown in Figures 14 and 15, one of the outrigger 112 and the outrigger connecting part 1112 is provided with a connector 1121, and the other is provided with a connector sleeve 1112a. The connector 1121 is inserted into the connector sleeve 1112a, and a fixed connection is achieved by fasteners 113 passing through the connector 1121 and the connector sleeve 1112a. In this embodiment, the outrigger 112 is provided with a connector 1121, the outrigger connecting part 1112 is provided with a connector sleeve 1112a, and the fastener 113 can specifically be a bolt. In this way, the outrigger 112 and the outrigger connecting part 1112 can be detachably connected.

[0126] As shown in Figure 16, a foot pad 114 is provided at the end of the support leg 112 away from the support leg connecting part 1112, that is, at the bottom end of the support leg 112. The foot pad 114 is made of rubber or other materials and has a certain anti-slip and noise reduction effect. The foot pad 114 is provided with a mating protrusion 1141, and the bottom end of the support leg 112 is provided with a mating groove 1122. The foot pad 114 is fixed to the bottom end of the support leg 112 through the interference fit between the mating protrusion 1141 and the mating groove 1122.

[0127] As shown in Figure 17, the plate part 400 includes a plate body 410 and plate connecting parts 420 protruding from both sides of the plate body 410. The two plate connecting parts 420 are provided with plug-in ends 421, and the enclosure part 220 or the first backing part 210 is provided with two plug-in slots 241 that can be inserted and cooperate with the plug-in ends 421.

[0128] As shown in Figure 18, each plate connecting part 420 is also provided with connecting fingers 422 at approximately the center. A connecting groove 223 is provided at the upper edge of the enclosure part 220 or the first backing part 210. When the insertion ends 421 of the two plate connecting parts 420 are inserted into the two insertion grooves 241, the engaging protrusions 4221 of the connecting fingers 422 can engage with the connecting grooves 223, thereby firmly installing the plate part 400 onto the first backing assembly 200.

[0129] As shown in Figures 18 and 19, a footrest 115 is provided between the two legs 112 located on the front side of the first support frame 110 to facilitate the placement of feet when children or adults sit. The connection position of the footrest 115 relative to the two legs 112 is adjustable, that is, the height of the footrest 115 is adjustable to accommodate children or adults of different body sizes. Specifically, the footrest 115 includes a footrest body 1151 and footrest connectors 1152 connected to both ends of the footrest body 1151. The footrest body 1151 has a rectangular plate structure, and the footrest connectors 1152 have an approximately L-shaped structure, including a first connector 1152a and a second connector 1152b that are connected to each other. Each leg 112 is provided with multiple adjustment holes 1123, and the multiple adjustment holes 1123 on the two legs 112 on the front side of the first support frame 110 are arranged opposite each other.

[0130] Taking the structure of one side of the pedal body 1151 as an example, the first connector 1152a is fixed to the bottom of one side of the pedal body 1151, and the second connector 1152b is detachably connected to the support leg 112 on the corresponding side. The adjusting member 116 passes through the second connector 1152b and is inserted into one of the multiple adjusting holes 1123 to fix the pedal body 1151 at a certain position of the support leg 112.

[0131] As shown in Figure 20, the adjusting component 116 is roughly T-shaped, including an operating knob 1161 and a fastening bolt 1162 that are interconnected and set at an angle. A fastening nut (not shown in the figure) can be inserted into the adjusting hole 1123. The nut has a first thread (not shown in the figure), and the end of the fastening bolt 1162 away from the operating knob 1161 has a second thread 1162a that can be screwed into the first thread. Thus, rotating the operating knob 1161 can tighten the fastening bolt 1162 into a certain adjusting hole 1123 or unscrew the fastening bolt 1162 out of a certain adjusting hole 1123, thereby realizing the detachable connection between the second connecting component 1152b and the support leg 112, thereby adjusting the height position of the pedal body 1151 relative to the support leg 112.

[0132] In this embodiment, each support leg 112 is provided with three adjustment holes 1123, meaning the footrest 115 can be fixed at three different height positions relative to the support leg 112: a first height position, a second height position, and a third height position, with the heights decreasing sequentially. When the high chair is in the first usage mode, the footrest 115 is fixed at the first height position. When the high chair is in the second usage mode, the footrest 115 is fixed at the second height position. When the high chair is in the third usage mode, the footrest 115 is fixed at the third height position.

[0133] In other embodiments, the number of height positions of the foot pedal 115 may be more than three or less than three, so as to be adjusted according to the user's body shape and meet more usage needs.

[0134] In other embodiments, the high chair does not necessarily have to include a first backrest assembly 200 and a second backrest assembly 300. The high chair may only have a first backrest assembly 200 or a second backrest assembly 300; that is, the user may only need a first usage mode and a third usage mode, or only a second usage mode or a third usage mode. Alternatively, the high chair may only include a seat frame 100; that is, the user may only need a third usage mode. Thus, the high chair can have different structural components depending on the user's needs. The seat frame 100 of the high chair may be provided with backrest engagement portions for mounting the first backrest assembly 200 and the second backrest assembly 300. These backrest engagement portions can engage with both the first backrest assembly 200 and the second backrest assembly 300. Alternatively, the backrest engagement portion may also include a first engagement portion (e.g., slot 130) for engaging with the first backrest assembly 200 and a second engagement portion (e.g., insertion channel 150) for engaging with the second backrest assembly 300. For example, the backrest engagement portion is an engagement groove provided on a first support frame.

[0135] In another embodiment, as shown in Figures 21 to 23, the bar chair may also include a second support frame 500, a second seat plate 600, a first backrest assembly 200, and a second backrest assembly 300. The second support frame 500 is connectable to one of the first backrest assembly 200 and the second backrest assembly 300. The second support frame 500 includes a first support frame 510 and a second support frame 520, with one end of the first support frame 510 and the second support frame 520 pivotally connected. The second seat plate 600 is disposed between the first support frame 510 and the second support frame 520.

[0136] As shown in Figures 21 and 22, the first backrest assembly 200 can be a child seat, including a first backrest portion 210, a seat portion 240, and a leg rest portion 250. The first backrest portion 210 includes a backrest body 211 and side panels 212 connected to the lateral sides of the backrest body 211. The seat portion 240 is connected to the lower side of the first backrest portion 210 and forms a seating space 101 for accommodating a child. The leg rest portion 250 is connected to the front side of the seat portion 240 for placing the child's feet. In this embodiment, the child seat is a one-piece molded structure. In other embodiments, the child seat can also be formed by connecting the first backrest portion 210, the seat portion 240, and the leg rest portion 250 by welding, fusion, or other methods.

[0137] The first backrest assembly 200 is detachably and pivotally connected to the second support frame 500. Specifically, the two side panels 212 of the first backrest assembly 200 are detachably and pivotally connected to the pivot joints of the first support frame 510 and the second support frame 520. When the first backrest assembly 200 is mounted on the second support frame 500, the first backrest assembly 200 can pivot relative to the second support frame 500 to form different usage modes of the high chair. For example, as shown in Figure 21, when the first backrest assembly 200 is mounted on the second support frame 500 and is in the first pivot position, the backrest body 211 tilts backward relative to the second support frame 500, and the high chair is in the first usage mode. This first usage mode is the newborn mode, suitable for infants under approximately 6 months old. Infants in this age group generally do not have the ability to sit up independently or feed themselves because their cervical spine is not yet fully developed. Therefore, the high chair in this first usage mode can be used as a comfort seat for infants, etc., and the infant is roughly in a reclining position, which can protect the infant's cervical spine. The first backrest 210 may be equipped with a five-point safety harness to secure the infant to the seating space 101.

[0138] As shown in Figure 22, when the first backrest assembly 200 is installed on the second support frame 500 and is in the second pivot position, the backrest body 211 is relatively upright, and the high chair is in the second usage mode. This second usage mode is a dining chair mode, which is suitable for infants and toddlers aged approximately 6 months to 3 years to eat. In this second usage mode, the plate part 400 can also be installed in a detachable or non-detachable manner to facilitate the placement of the infant's tableware and food. In this embodiment, the plate part 400 also includes a plate body 410 and plate connecting parts 420 located at both ends of the rear side of the plate body 410. In this embodiment, the outer sides of both side baffles 2122 are provided with insertion tubes 2122, and the insertion tubes 2122 have insertion cavities 2123 for inserting the plate connecting parts 420 (see Figure 22), thus realizing a detachable connection between the plate part 400 and the first backrest assembly 200. The plate part 400 also includes a stop 423 located below the plate body 410. The stop 423 can be used to stop the groin of the infant to prevent the infant from slipping off the high chair.

[0139] As shown in Figure 23, when the second backrest assembly 300 is installed on the second support frame 500, the high chair is in its third usage mode. The second backrest assembly 300 is generally U-shaped, with both ends of the U-shaped rod detachably connected to the pivot joints of the first support frame 510 and the second support frame 520, respectively, to support the user's back. This third usage mode is a high chair mode, which is mainly suitable for children aged approximately 3 to 12 years old. Of course, children older than 12 years old or adults can also use it.

[0140] Referring to Figure 30, when the high chair is in the third usage mode, the pivot member 700 is in the second pivot position, and both ends of the second backrest assembly 300 are respectively inserted and fixed in the mounting recesses 710 of the two pivot members 700. Of course, in other embodiments, when the high chair is in the third usage mode, the pivot member 700 may also be in a third pivot position different from the first and second pivot positions.

[0141] It is worth noting that, as shown in Figures 21 and 22, when the first backrest assembly 200 is mounted on the second support frame 500, the first support frame 510 is located in front of the second support frame 520. When the second backrest assembly 300 is mounted on the second support frame 500, the second support frame 520 is located in front of the first support frame 510. Of course, in other embodiments, it can also be configured such that regardless of whether the first backrest assembly 200 or the second backrest assembly 300 is mounted on the second support frame 500, the first support frame 510 is always located in front of or behind the second support frame 520.

[0142] As shown in Figures 24 to 26, the second support frame 500 can be folded to save storage or transportation space; that is, the second support frame 500 can switch between an extended state and a folded state. Specifically, as shown in Figure 23, the first support frame 510 includes two first support rods 511 disposed on both sides of the second base plate 600 and a first connecting rod 512 connecting the two first support rods 511. The second support frame 520 includes two second support rods 521 disposed on both sides of the second base plate 600 and a second connecting rod 522 connecting the two second support rods 521. Each first support rod 511 is pivotally connected to a corresponding second support rod 521. In this embodiment, both first support rods 511 are straight rods, and both second support rods 521 are curved rods with a certain curvature at the top. Thus, when the first backrest assembly 200 is mounted on the second support frame 500, the two second support rods 521 will not protrude from the front of the first backrest assembly 200 and interfere with it. When the second backrest assembly 300 is mounted on the second support frame 500, the curved portions of the two second support rods 521 can form armrests that are easy to grip and provide some protection. A footrest 115 is also connected between the two second support rods 521. When the high chair is in the third usage mode, the footrest 115 can be used to support the user's feet. Of course, in other embodiments, the two first support rods 511 and the two second support rods 521 can also be straight rods or curved rods.

[0143] As shown in Figure 27, the second support frame 500 also includes a first connecting frame 530 and a second connecting frame 540 for supporting the second seat plate 600 and located below the second seat plate 600. One side of the first connecting frame 530 is pivotally connected to the first support frame 510, one side of the second connecting frame 540 is pivotally connected to the second support frame 520, and the other side of the first connecting frame 530 is pivotally connected to the other side of the second connecting frame 540. The second seat plate 600 is fixedly connected to the first connecting frame 530. When the second support frame 500 is in the unfolded state, the first connecting frame 530 and the second connecting frame 540 are approximately in the same plane, and the second seat plate 600 is mounted above the first connecting frame 530 and the second connecting frame 540.

[0144] Specifically, both the first connecting frame 530 and the second connecting frame 540 are generally H-shaped. The first connecting frame 530 includes a first crossbar 531 extending generally in the transverse direction of the second seat plate 600 and two first longitudinal bars 532 connected to both ends of the first crossbar 531 and extending generally in the longitudinal direction of the second seat plate 600. The second connecting frame 540 includes a second crossbar 541 extending generally in the transverse direction of the second seat plate 600 and two second longitudinal bars 542 connected to both ends of the second crossbar 541 and extending generally in the longitudinal direction of the second seat plate 600. One end of each of the two first longitudinal bars 532 is pivotally connected to the first connecting rod 512 via two pivot members 560, and the other end of each of the two first longitudinal bars 532 is pivotally connected to one end of each of the two second longitudinal bars 542 via two pivot members 560. The other ends of each of the two second longitudinal bars 542 are pivotally connected to the second crossbar 541. The first connecting frame 530 is fixed below the second base plate 600, specifically, the first crossbar 531 is fixed below the second base plate 600. Thus, when the first connecting frame 530 pivots and folds, it can drive the second connecting frame 540 to pivot and fold as well. The first crossbar 531 is positioned away from the first connecting rod 512 to provide better support for the second base plate 600. The second crossbar 541 is positioned close to the second connecting rod 522.

[0145] As shown in Figures 28 and 29, the second support frame 500 in this embodiment further includes a locking mechanism 550. The locking mechanism 550 includes a first locking portion 551 and a second locking portion 552. The first locking portion 551 is operably disposed on the second base plate 600. The first locking portion 551 includes a locking body 5511 and an operating handle 5512 connected to each other. In this embodiment, the first locking portion 551 is an integrally formed structure. One end of the locking body 5511 can be connected to the rear edge of the second base plate 600 by, for example, a screw. The locking body 5511 has a locking groove 5511a. The second locking portion 552 is disposed on the second support frame 520; specifically, the second locking portion 552 is fixed to approximately the middle of the second crossbar 541. The first engaging portion 551 can engage with the second engaging portion 552 to lock the second support frame 500 in the unfolded state, that is, the second connecting rod 522 can engage in the locking groove 5511a to lock the second support frame 500 in the unfolded state. The first engaging portion 551 can be operated to disengage from the second engaging portion 552. Specifically, the first engaging portion 551 is made of a material with a certain elastic deformation capability, such as plastic. When the operating handle 5512 is turned along the D3 direction, the second connecting rod 522 can disengage from the locking groove 5511a, thereby releasing the lock on the second support frame 500 in the unfolded state. After the lock on the unfolded state is released, the second support frame 500 can be folded up by the pivoting of the first connecting frame 530 and the second connecting frame 540, and the relative pivoting of the first support frame 510 and the second support frame 520 (as shown in Figures 24 to 26).

[0146] As shown in Figures 30 and 31, the high chair in this embodiment also includes a pivot 700. The pivot 700 is rotatably mounted on the second support frame 500. One of the pivot 700 and the first backrest assembly 200 has a mounting recess 710, and the other has a mounting protrusion 2121. The mounting recess 710 and the mounting protrusion 2121 cooperate to rotatably mount the first backrest assembly 200 to the second support frame 500. Similarly, the mounting structure of the pivot 700 and the second backrest assembly 300 is also similar.

[0147] Specifically, each first support rod 511 has a first mounting seat 513 at its upper end, and each second support rod 521 has a second mounting seat 523 at its upper end that is pivotally connected to the first mounting seat 513 on the corresponding side. Two pivot members 700 are provided, each rotatably mounted on a second mounting seat 523. In this embodiment, the second mounting seat 523 is pivotally connected to the inner side of the first mounting seat 513, i.e., the side of the first mounting seat 513 facing the second base plate 600, and the pivot member 700 is pivotally connected to the inner side of the second mounting seat 523. Thus, the two pivot members 700 are arranged opposite each other. Each of the two pivot members 700 has a mounting recess 710. The two side plates 212 of the first backing assembly 200 each have mounting protrusions 2121 that can respectively engage with the two mounting recesses 710 to rotatably mount the first backing assembly 200 to the second support frame 500.

[0148] The following describes the relevant structure of the mounting recess 710 and mounting protrusion 2121 on one side.

[0149] As shown in Figure 30, the mounting recess 710 is a groove-shaped structure with a generally rectangular cross-section. The mounting recess 710 has a first groove wall 711 and a second groove wall 712 disposed opposite to each other, and a third groove wall 713 connected to one end of the first groove wall 711 and the second groove wall 712. An opening 714 is formed at the other end of the first groove wall 711 and the second groove wall 712. A circular engaging groove 715 is provided approximately in the center of the groove bottom of the mounting recess 710. As shown in Figure 31, the mounting protrusion 2121 is a generally rectangular shell structure that matches the mounting recess 710, and a receiving cavity 2121a is formed within the mounting protrusion 2121 (see Figure 33). The mounting protrusion 2121 can be inserted into the mounting recess 710 through the opening 714.

[0150] As shown in Figures 32 to 34, the bar chair also includes a disassembly mechanism 800 for detachable installation between the first backrest assembly 200 and the second support frame 500. The disassembly mechanism 800 is at least partially located within the receiving cavity 2121a of the mounting protrusion 2121, and specifically includes a first operating member 810, a locking member 820, and a second resetting member 830.

[0151] The first operating member 810 is at least partially movably disposed within the receiving cavity 2121a. The first operating member 810 includes an operating part 811 and a driving part 812 connected to each other. In this embodiment, the first operating member 810 is a one-piece molded structure. One end of the mounting protrusion 2121 is provided with an operating hole 2121b communicating with the receiving cavity 2121a, and the end of the operating part 811 away from the driving part 812 can extend out of the operating hole 2121b to be pressed. The end of the driving part 812 away from the operating part 811 has a fork-shaped structure and has two fork feet 8121. Each of the two fork feet is provided with a driving ramp 8122.

[0152] The engaging member 820 is movably disposed on the mounting protrusion 2121. In this embodiment, the engaging member 820 is at least partially disposed within the receiving cavity 2121a. The engaging member 820 includes an engaging body 821 and protruding posts 822 protruding from both sides of the engaging body 821. The outer side wall 2121c of the mounting protrusion 2121, i.e., the side of the mounting protrusion 2121 away from the side baffle 212, is provided with an engaging hole 2121d communicating with the receiving cavity 2121a. The engaging member 820 is movable between a second locked position and a second unlocked position in a direction close to or away from the outer side wall 2121c of the mounting protrusion 2121, i.e., in the lateral direction of the first backing assembly 200. The engaging body 821 has an engaging end 8211. When the engaging member 820 is in the second locked position, the engaging end 8211 of the engaging body 821 can extend out of the engaging hole 2121d and engage with the engaging groove 715. The two driving ramps 8122 of the driving part 812 abut against the protrusions 822 on both sides of the engaging body 821. The extending directions of the two driving ramps 8122 intersect but are not perpendicular to the moving direction of the engaging member 820 (i.e., the lateral direction of the first backing assembly 200). The operating part 811 of the first operating member 810 can be pressed to push against the protrusions 822 on both sides of the engaging body 821 through the two driving ramps 8122, so that the engaging member 820 moves to the second unlocking position. When the engaging member 820 is in the second unlocking position, the engaging end 8211 of the engaging body 821 retracts into the receiving cavity 2121a to disengage from the engaging groove 715. At this time, the mounting protrusion 2121 can be pulled out from the mounting recess 710, so that the first backing assembly 200 can be detached from the second support frame 500.

[0153] As shown in Figure 33, the second reset member 830 is adapted to bias the engaging body 821 to move towards the second locking position. In this embodiment, the second reset member 830 is a spring disposed within the receiving cavity 2121a. A reset groove 8212 is provided at one end of the engaging body 821 away from the engaging end 8211. The second reset member 830 is at least partially accommodated within the reset groove 8212, with one end abutting against the bottom of the reset groove 8212. The other end of the second reset member 830 abuts against the inner sidewall 2121e of the mounting protrusion 2121 (i.e., the sidewall opposite to the outer sidewall 2121c). The reset groove 8212 helps prevent the second reset member 830 from shifting during biasing.

[0154] As shown in Figure 35, the mounting protrusion 2121 also has strip-shaped limiting protrusions 2121f on both sides, and the first groove wall 711 and the second groove wall 712 of the mounting recess 710 are also provided with limiting grooves 716 that can respectively cooperate with the two limiting protrusions 2121f. When the mounting protrusion 2121 is inserted into the mounting recess 710, the limiting protrusions 2121f are correspondingly inserted into the corresponding limiting grooves 716. The cooperation between the limiting protrusions 2121f and the limiting grooves 716 can, on the one hand, provide guidance for the process of the mounting protrusion 2121 being inserted into the mounting recess 710, and on the other hand, it can also make the first backing component 200 more securely fixed on the second support frame 500, avoiding the phenomenon of lateral swaying of the first backing component 200.

[0155] As shown in Figures 33 and 34, a fixing block 2124 is also inserted into the mounting cavity 102 of the mounting protrusion 2121. The fixing block 2124 is used to position the disassembly mechanism 800.

[0156] The bar chair also includes an angle adjustment mechanism 900 for adjusting the pivot position of the first backrest assembly 200 relative to the second support frame 500, and for adjusting the rotation angle of the pivot member 700 so that the pivot member 700 is suitable for mounting the second backrest assembly 300. As shown in Figures 36 to 38, the angle adjustment mechanism 900 specifically includes a limiting member 910, a second operating member 920, a second limiting portion 930, and a third resetting member 940.

[0157] The first mounting base 513 has a generally cylindrical first mounting groove 5131, and the second mounting base 523 has a generally cylindrical second mounting groove 5231. The first mounting base 513 and the second mounting base 523 are engaged to form a mounting cavity 102. A limiting member 910 is movably disposed within the mounting cavity 102. The limiting member 910 is movable between a third locking position and a third unlocking position, and a first limiting portion 911 is provided at the edge of the limiting member 910. When the limiting member 910 is in the third locking position, the second limiting portion 930 engages with the first limiting portion 911; when the limiting member 910 is in the third unlocking position, the second limiting portion 930 disengages from the first limiting portion 911.

[0158] As shown in Figure 39, the limiting member 910 can be a locking gear 910'. The outer edge of the locking gear 910' is provided with multiple locking protrusions 912, and a locking groove 911' is formed between every two locking protrusions 912, which forms the first limiting part 911. A mounting shaft 5231a is protruding from approximately the center of the bottom of the second mounting groove 5231. The limiting member 910 has a mounting hole 913 approximately in the middle. The limiting member 910 can move along the axial direction of the second mounting seat 523 by the insertion and engagement of the mounting shaft 5231a and the mounting hole 913. In this embodiment, the multiple locking protrusions 912 include two first protrusions 9121, two second protrusions 9122, and two third protrusions 9123. The two first protrusions 9121 and the two second protrusions 9122 are the same size and are all larger than the size of the third protrusions 9123. Two first protruding teeth 9121 and two second protruding teeth 9122 are evenly distributed circumferentially on the outer edge of the engaging member 820. The two first protruding teeth 9121 are symmetrically arranged with respect to the mounting hole 913, and the two second protruding teeth 9122 are symmetrically arranged with respect to the mounting hole 913. A third protruding tooth 9123 is located between one of the first protruding teeth 9121 and one of the second protruding teeth 9122, and another third protruding tooth 9123 is located between the other first protruding tooth 9121 and the other second protruding tooth 9122; that is, the two third protruding teeth 9123 are also symmetrically arranged with respect to the mounting hole 913. Each third protruding tooth 9123 forms an engaging groove 911' with its adjacent first protruding tooth 9121 or second protruding tooth 9122. The engaging groove 911' formed between each third protrusion 9123 and the adjacent first protrusion 9121 is a first groove 9111, and the engaging groove 911' formed between each third protrusion 9123 and the adjacent second protrusion 9122 is a second groove 9112. That is, the limiting member 910 has two first grooves 9111 symmetrically arranged with respect to the mounting hole 913 and two second grooves 9112 symmetrically arranged with respect to the mounting hole 913. In this embodiment, there are two sets of engaging grooves 911', namely the first grooves 9111 and the second grooves 9112; in other embodiments, there may be multiple sets of engaging grooves 911', for example, including a third groove (not shown in the figure), to meet more rotation angle requirements. Exemplarily, the third groove may be formed on the two first protrusions 9121 or the two second protrusions 9122.

[0159] A guide groove 914 is formed between adjacent first protrusions 9121 and second protrusions 9122, meaning that the limiting member 910 is also provided with two guide grooves 914 symmetrically arranged relative to the mounting hole 913. The bottom of the second mounting groove 5231 is provided with two guide protrusions 5231b extending in a direction parallel to the mounting axis 5231a. Each guide protrusion 5231b and the corresponding guide groove 914 cooperate to ensure that the movement of the limiting member 910 is limited to the direction parallel to the mounting axis 5231a, and cannot rotate relative to the first mounting seat 513 and the second mounting seat 523.

[0160] As shown in Figure 39, the second operating element 920 is specifically an operating button, including an operating body 921 that is roughly circular and a plurality of operating protrusions 922 arranged circumferentially along the outer edge of the operating body 921. The plurality of operating protrusions 922 are arranged at an angle to the operating body 921. The side of the first mounting base 513 facing away from the mounting cavity 102 is provided with an operating groove 5132, and the bottom edge of the operating groove 5132 is provided with a plurality of insertion holes 5133 communicating with the mounting cavity 102. The operating body 921 is movably disposed in the operating groove 5132, and the plurality of operating protrusions 922 can extend into the mounting cavity 102 through the plurality of insertion holes 5133 respectively and abut against the limiting member 910. The operating body 921 of the second operating element 920 can be pressed to move along the axial direction of the first mounting base 513 and push the limiting member 910 from the third locking position to the third unlocking position. Each operating protrusion 922 has an operating limit part 923 at the end away from the operating body 921. The operating limit part 923 can abut against the side of the bottom of the operating groove 5132 facing away from the operating groove 5132 to prevent the second operating member 920 from falling off the first mounting base 513.

[0161] As shown in Figure 39, the second limiting part 930 is fixed to or integrally formed on one side of the mounting recess 710 of the pivot 700. In this embodiment, the pivot 700 is generally a circular sheet structure, and there are two second limiting parts 930, which are symmetrically arranged with respect to the central axis of the pivot 700. In this embodiment, the second limiting part 930 is a locking protrusion 930', and its structure is specifically described below using one of the locking protrusions 930' as an example. The locking protrusion 930' includes a connecting arm 931 and a locking arm 932 arranged at an angle. One end of the connecting arm 931 is fixed to one side of the mounting recess 710 of the pivot 700, and the other end of the connecting arm 931 is connected to one end of the locking arm 932. The other end of the locking arm 932 is a free end and extends towards the center of the pivot 700. The second mounting base 523 has two arc-shaped limiting grooves 5232. The engaging arms 932 and at least part of the connecting arms 931 of the two engaging protrusions 930' extend into the mounting cavity 102 through the two limiting grooves 5232. When the pivot member 700 rotates relative to the second mounting base 523, the two engaging protrusions 930' move along the two limiting grooves 5232 respectively. When the limiting member 910 is in the third locking position, the two engaging arms 932 engage with the two first grooves 9111 or the two second grooves 9112 respectively. When the two engaging arms 932 are engaged in the two first grooves 9111 respectively, the first backrest assembly 200 is in the first pivot position (as shown in Figure 21), and the high chair is in the first usage mode. When the two engaging arms 932 are engaged in the two second grooves 9112 respectively, the first backrest assembly 200 is in the second pivot position (as shown in Figure 22), and the high chair is in the second usage mode. In this embodiment, when the two engaging arms 932 are respectively engaged in the two second grooves 9112, the two ends of the second backrest assembly 300 can also be inserted into the mounting recesses 710 of the two pivot members 700, and the high chair is in the third usage mode. According to other embodiments not shown in the figure, when the two engaging arms 932 are respectively engaged in the two third grooves (not shown), the second backrest assembly 300 is in the third pivot position (not shown), and the high chair is in the third usage mode. When the limiting member 910 is in the third unlocking position, the limiting member 910 is located between the engaging arm 932 and the pivot member 700 and is released from engagement with the engaging arm 932.

[0162] As shown in Figures 37 to 39, the third reset member 940 is disposed between the second mounting base 523 and the limiting member 910. The third reset member 940 is adapted to bias the limiting member 910 to move to the third locking position. In this embodiment, the third reset member 940 is a spring. The third reset member 940 is sleeved outside the mounting shaft 5231a, with one end abutting against the bottom of the first mounting groove 5131 and the other end abutting against the limiting member 910. This prevents the third reset member 940 from shifting during the biasing process.

[0163] The working principle of the angle adjustment mechanism 900 will be explained in detail below.

[0164] When the first backrest assembly 200 is mounted on the second support frame 500 and the pivot position of the first backrest assembly 200 needs to be adjusted, for example, from the first usage mode shown in FIG21 to the second usage mode shown in FIG22, as shown in FIG37, the operating body 921 of the second operating member 920 can be pressed along the fourth direction D4, so that the operating protrusion 922 of the second operating member 920 pushes the limiting member 910 to move along the fourth direction D4 and moves from the third locking position to the third unlocking position. The third reset member 940 is compressed, and the limiting member 910 is located between the engaging arm 932 and the pivot member 700, and the engaging arm 932 on the pivot member 700 is disengaged from the first groove 9111 on the limiting member 910. At this time, the pivot member 700 can pivot relative to the second mounting base 523 to the second pivot position, that is, the engaging arm 932 of the pivot member 700 is opposite to the second groove 9112 of the limiting member 910. The pressing force applied to the operating body 921 can then be removed. The limiting member 910, which has lost the pushing effect of the operating protrusion 922, can be reset to the third locking position under the elastic force of the third reset member 940, so that the engaging arm 932 of the pivot member 700 engages with the second groove 9112 of the limiting member 910, thereby keeping the first backing assembly 200 in the second pivot position.

[0165] When the high chair is adjusted from the first usage mode shown in Figure 21 to the third usage mode shown in Figure 23, the angle adjustment mechanism 900 works on the same principle as described above. However, after adjusting the pivot member 700 to the second pivot position, both ends of the second backrest assembly 300 need to be inserted into the mounting recesses 710 of the two pivot members 700. According to an embodiment not shown in the figures, when the high chair is in the third usage mode, the pivot member 700 can also be in a third pivot position different from the first and second pivot positions. In this case, the pivot member 700 can be adjusted to the third pivot position according to a principle similar to that described above.

[0166] Similar to the previous embodiment, the high chair does not necessarily have to include a first backrest assembly 200 and a second backrest assembly 300. The high chair may only have a first backrest assembly 200 or a second backrest assembly 300; that is, the user may only need a first usage mode, a second usage mode, or only a third usage mode. Thus, the high chair can have different structural configurations depending on the user's needs.

[0167] The high chair provided in one embodiment of the present invention has at least the following technical effects.

[0168] The high chair can be combined with a first backrest assembly 200 having a first backrest portion 210 and a surround portion 220 to form a first usage mode, serving as a high chair for younger infants (e.g., 6 months to 3 years old). The high chair can also be connected with a second backrest assembly 300 having a second backrest portion 310 to form a second usage mode, serving as a growth chair for older children (e.g., 3 to 12 years old). The high chair can also be used independently of the first backrest portion 210 and the second backrest portion 310, serving as an adult chair for older children and adults (12 years and older). Thus, the high chair can effectively meet the eating needs of children or adults of different ages by switching between multiple usage modes, making its use more versatile.

[0169] The high chair provided in another embodiment of the present invention has at least the following technical effects.

[0170] The high chair can be used as a chair for newborns under 6 months old by combining with a first backrest assembly 200 having a seat portion 240 and a first backrest portion 210 and positioning the first backrest assembly 200 in a first pivot position to form a first usage mode. The high chair can also be used as a high chair for younger infants (e.g., 6 months to 3 years old) by combining with the first backrest assembly 200 having a seat portion 240 and a first backrest portion 210 and positioning the first backrest assembly 200 in a second pivot position to form a second usage mode. The high chair can also be used as a growth chair for older children and adults (3 to 12 years old) by connecting with a second backrest assembly 300. Thus, the high chair can effectively meet the eating needs of children or adults of different ages by switching between multiple usage modes, making its use more versatile.

[0171] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0172] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the patent scope of the present invention should be determined by the appended claims.

[0173] 101: Passenger Space 102: Installation cavity 100: Seat frame 110: First support frame 111: Seat frame 1111: Support base 1112: Outrigger connection section 1112a: Insert sleeve 112: Support Leg 1121: Connector 1122: Mating groove 1123: Adjustment hole 113: Fasteners 114: Foot pads 1141: Matching convex 115: Foot pedal 1151: Pedal Body 1152: Pedal Connector 1152a: First connector 1152b: Second connector 116: Adjusting component 1161: Operation knob 1162: Fastening bolts 117: Mounting rack 120: First seat board 130: Slot 131: Opening 150: Plug-in channel 151: Perforation 160: Locking mechanism 161: Locking component 1611: Hook section 162: Lock release mechanism 1621: Operation Convex 1622: First End 1623: Second End 1624: Set Convex 163: First reset component 170: Mounting slot 171: Operation port 180: Reinforcing component 200: First back-mounted component 210: First backrest section 211: Back against the main body 212: Side panel 2121: Install the protrusion 2121a: Receiving cavity 2121b: Operating hole 2121c: Lateral wall 2121d: Engagement Hole 2121e: Inner wall 2121f: Limiting protrusion 2122: Connector 2123: Insertion cavity 2124: Fixed block 220: Construction site enclosure 221: Horizontal fencing 222: Lateral enclosure 223: Connecting slot 240: Seating Section 250: Leg rest 230: First connecting part 231: First vertical extension 232: First longitudinal extension 2321: Grooving 2322: Flexible fingers 2322a: Elastic protrusion 233: Engagement recess 241: Socket 300: Second back-mounted component 310: Second backrest section 320: Second connecting part 321: Second vertical extension 322: Second longitudinal extension 3221: Insertion Terminal 3222: Locking hole 400: Plate Department 410: The plate itself 420: Plate connection part 421: Plug-in terminal 422: Connecting fingers 4221: Engaging protrusion 423: Stop component 500: Second support frame 510: First Support Frame 511: First support rod 512: First connecting rod 513: First mounting bracket 5131: First mounting slot 5132: Operation slot 5133: Socket 520: Second Support Frame 521: Second support rod 522: Second connecting rod 523: Second mounting bracket 5231: Second mounting slot 5231a: Mounting shaft 5231b: Guide protrusion 5232: Limiting groove 530: First connecting frame 531: First horizontal bar 532: First longitudinal bar 540: Second connecting frame 541: Second horizontal bar 542: Second longitudinal bar 550: Card-connecting mechanism 551: First Card Combination Section 5511: Snap body 5511a: Locking groove 5512: Operating handle 552: Second Card Combination Part 560: Pivot 600: Second seat plate 700: Pivot 710: Installation recess 711: First tank wall 712: Second tank wall 713: Third tank wall 714: Opening 715: Snap-fit ​​slot 716: Limiting Groove 800: Disassembly Mechanism 810: First operating component 811: Operations Department 812: Drive Unit 8121: Cross-legged 8122: Driving Inclined Surface 820: Card assembly 821: Snap body 8211: Card-connecting end 8212: Reset slot 822: Convex column 830: Second reset component 900: Angle Adjustment Mechanism 910: Limiting component 910': Engaging gear 911: First limiting part 911': Engaging groove 9111: First Groove 9112: Second groove 912: Engaging teeth 9121: First convex tooth 9122: Second convex tooth 9123: Third convex tooth 913: Mounting Hole 914: Guide groove 920: Second operating unit 921:Operation body 922: Operational protrusion 923: Operating limit unit 930: Second limiting part 930': A convex, interlocking protrusion 931: Connecting Arm 932: Clamping Arm 940: Third reset component

Claims

1. A high chair, comprising: A chair frame includes a first support frame and a first seat plate mounted on the first support frame, the first seat plate being provided with a mounting bracket; a first backrest assembly for detachably connecting to the chair frame, the first backrest assembly including a first connecting portion for connecting to the chair frame; and a second backrest assembly for detachably connecting to the chair frame, the second backrest assembly including a second backrest portion and a second connecting portion for connecting to the chair frame; wherein the chair frame can be connected to one of the first backrest assembly and the second backrest assembly; when the first backrest assembly is fixedly connected to the chair frame, the high chair is in a first usage mode; when the second backrest assembly is fixedly connected to the chair frame, the high chair is in a second usage mode; when neither the first backrest assembly nor the second backrest assembly is connected to the first seat plate, the high chair is in a third usage mode; wherein the mounting bracket is used to form a backrest engagement portion, the first connecting portion and the second connecting portion being inserted into the backrest engagement portion at the lower side of the first seat plate.

2. The high chair as claimed in claim 1, wherein the backrest joint includes a first joint for engaging with the first backrest assembly, the mounting bracket forming the first joint with the first seat plate; the first connecting portion includes a first vertical extension and a first longitudinal extension connected to each other and arranged at an angle to each other, the first longitudinal extension being inserted into the first joint.

3. The high chair as claimed in claim 2, wherein the first longitudinal extension is provided with an elastic finger, and the side wall of the first joint is provided with an opening corresponding to the elastic finger, wherein when the first longitudinal extension is inserted into the first joint, the elastic protrusion of the elastic finger can slide into the opening.

4. The high chair as claimed in claim 2, wherein the connection between the first longitudinal extension and the first vertical extension is bent to form an engaging recess, wherein when the first longitudinal extension is inserted into the first joint, the engaging recess engages with the edge of the seat frame.

5. The high chair as claimed in claim 1, wherein the backrest joint includes a second joint for engaging with the second backrest assembly, the second joint is formed within the mounting bracket, the second connecting portion includes a second vertical extension and a second longitudinal extension that are interconnected and angled to each other, the second longitudinal extension being inserted into the second joint; wherein one end of the second vertical extension away from the second longitudinal extension is fixedly connected to the second backrest, and one end of the second longitudinal extension away from the second vertical extension is inserted into the second joint.

6. The high chair as claimed in claim 5 further includes a locking mechanism, the locking mechanism including a locking member movably disposed on the seat frame, a locking hole provided on the second longitudinal extension, the locking member having a first locking position and a first unlocking position, wherein when the second longitudinal extension is inserted into the second engagement portion, if the locking member is in the first locking position, the locking member can be inserted into the locking hole; if the locking member is in the first unlocking position, the locking member can disengage from the locking hole.

7. The high chair as claimed in claim 6, wherein the locking mechanism further includes a release member drivenly connected to the locking member, the release member being operable to move the locking member to the first release position; wherein an elongated mounting groove is formed in the mounting bracket or between the mounting bracket and the first seat plate, the release member being disposed in the mounting groove and movable along the extension direction of the mounting groove.

8. The high chair as claimed in claim 1, wherein the backrest engagement includes a slot for engaging with the first connection and a plug-in channel for engaging with the second backrest assembly.

9. The high chair as claimed in claim 1, wherein the backrest joint extends along the longitudinal direction of the first seat plate.

10. The high chair as claimed in claim 1, wherein the backrest engagement includes a first engagement for engaging with the first connecting portion and a second engagement for engaging with the second backrest assembly, wherein: Both the first joint and the second joint extend along the longitudinal direction of the first seat plate, and the second joint is spaced apart from the first joint in the transverse direction of the first seat plate; or the first joint extends along the longitudinal direction of the first seat plate, and the second joint extends along the transverse direction of the first seat plate.

11. A high chair, comprising: A chair frame includes a first support frame and a first seat plate mounted on the first support frame, the first seat plate being provided with a mounting bracket; a first backrest assembly for detachably connecting to the chair frame, the first backrest assembly including a first connecting portion for connecting to the chair frame; and a second backrest assembly for detachably connecting to the chair frame, the second backrest assembly including a second backrest portion and a second connecting portion for connecting to the chair frame; wherein the chair frame can be connected to one of the first backrest assembly and the second backrest assembly; when the first backrest assembly is fixedly connected to the chair frame, the high chair is in a first usage mode; when the second backrest assembly is fixedly connected to the chair frame, the high chair is in a second usage mode; when neither the first backrest assembly nor the second backrest assembly is connected to the first seat plate, the high chair is in a third usage mode; wherein the mounting bracket is used to form a backrest engagement portion, the first connecting portion and the second connecting portion being inserted into the backrest engagement portion; The backrest engagement portion includes a first engagement portion for engaging with the first backrest assembly, and the mounting bracket and the first seat plate form the first engagement portion; the first connecting portion includes a first vertical extension portion and a first longitudinal extension portion that are connected to each other and arranged at an angle to each other, and the first longitudinal extension portion is used to be inserted into the first engagement portion.

12. A high chair, comprising: A chair frame includes a first support frame and a first seat plate mounted on the first support frame, the first seat plate being provided with a mounting bracket; a first backrest assembly for detachably connecting to the chair frame, the first backrest assembly including a first connecting portion for connecting to the chair frame; and a second backrest assembly for detachably connecting to the chair frame, the second backrest assembly including a second backrest portion and a second connecting portion for connecting to the chair frame; wherein the chair frame can be connected to one of the first backrest assembly and the second backrest assembly; when the first backrest assembly is fixedly connected to the chair frame, the high chair is in a first usage mode; when the second backrest assembly is fixedly connected to the chair frame, the high chair is in a second usage mode; when neither the first backrest assembly nor the second backrest assembly is connected to the first seat plate, the high chair is in a third usage mode; wherein the mounting bracket is used to form a backrest engagement portion, the first connecting portion and the second connecting portion being inserted into the backrest engagement portion; The backrest engagement includes a second engagement for engaging with the second backrest assembly. The second engagement is formed within the mounting bracket. The second connection includes a second vertical extension and a second longitudinal extension that are interconnected and angled to each other. The second longitudinal extension is inserted into the second engagement. The end of the second vertical extension away from the second longitudinal extension is fixedly connected to the second backrest, and the end of the second longitudinal extension away from the second vertical extension is inserted into the second engagement.

13. A high chair, comprising: A chair frame includes a first support frame and a first seat plate mounted on the first support frame, the first seat plate being provided with a mounting bracket; a first backrest assembly for detachably connecting to the chair frame, the first backrest assembly including a first connecting portion for connecting to the chair frame; and a second backrest assembly for detachably connecting to the chair frame, the second backrest assembly including a second backrest portion and a second connecting portion for connecting to the chair frame; wherein the chair frame can be connected to one of the first backrest assembly and the second backrest assembly; when the first backrest assembly is fixedly connected to the chair frame, the high chair is in a first usage mode; when the second backrest assembly is fixedly connected to the chair frame, the high chair is in a second usage mode; when neither the first backrest assembly nor the second backrest assembly is connected to the first seat plate, the high chair is in a third usage mode; wherein the mounting bracket is used to form a backrest engagement portion, the first connecting portion and the second connecting portion being inserted into the backrest engagement portion; wherein the backrest engagement portion includes a first engagement portion for engaging with the first connecting portion and a second engagement portion for engaging with the second backrest assembly, wherein: Both the first joint and the second joint extend along the longitudinal direction of the first seat plate, and the second joint is spaced apart from the first joint in the transverse direction of the first seat plate; or the first joint extends along the longitudinal direction of the first seat plate, and the second joint extends along the transverse direction of the first seat plate.

Images