Dinner plate assembly and child seat
Patent Information
- Application Number
- CN202522337020.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0004]针对现有技术的上述不足，本实用新型所要解决的技术问题在于，提出一种餐盘组件及儿童座椅，用于解决现有技术中餐盘组件不便于收纳等问题
当使用餐盘组件时，可以将餐盘组件的支臂可拆卸连接于座椅本体，使餐盘组件处于使用状态，以便于辅助进食等。当无需使用餐盘组件时，可以将餐盘组件的支臂从座椅本体脱离，然后将安装座卡入两个第一椅腿之间，从而使餐盘组件能够被收纳至支撑组件，以实现餐盘组件的收纳，并防止餐盘组件遗失。
Smart Images
Figure CN224910889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seating technology, and in particular to a dinner plate assembly and a child seat. Background Technology
[0002] A high chair is a feeding aid specifically designed for infants and toddlers. Its core function is to provide a safe and comfortable dining environment, help cultivate independent eating habits, and reduce the feeding burden on parents. A high chair typically consists of a tray assembly, a seat assembly, and a support assembly, with the tray assembly mounted on the seat assembly.
[0003] In related technologies, plate components take up too much space when not in use, are inconvenient to store, and are easily lost. Utility Model Content
[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a plate assembly and a child seat to solve the problem that the plate assembly in the prior art is not easy to store.
[0005] The technical solution adopted by this utility model to solve its technical problem is a tray assembly, which is installed on a child seat. The child seat includes a seat body and a support assembly. The support assembly includes a pair of first chair legs. The tray assembly includes: The plate itself; The mounting base is protrudingly mounted on the bottom of the plate body. The mounting base includes a pair of first snap-fit portions spaced apart along a first direction, the pair of first snap-fit portions being used to detachably connect the first chair leg. A support arm is disposed on the mounting base, the support arm including a second snap-fit portion for detachably connecting to the seat body; The plate assembly has a storage state and a use state; in the storage state, the plate assembly is connected between the pair of first chair legs through the pair of first snap-fit parts; in the use state, the support arm is connected to the seat body through the second snap-fit part.
[0006] This utility model has at least the following beneficial effects: When using the tray set, the support arm can be detachably connected to the seat body, putting the tray set into use to assist with eating. When the tray set is not in use, the support arm can be detached from the seat body, and the mounting bracket can be inserted between the two first chair legs, allowing the tray set to be stored in the support assembly for safekeeping and to prevent loss.
[0007] Furthermore, the plate body includes a first housing and a second housing connected to each other, the mounting base is disposed on the second housing, the mounting base is provided with a first mounting hole, the first housing is provided with a connector, and the support arm extends into the first mounting hole and is connected to the connector.
[0008] Furthermore, the plate body is provided with two mounting seats, each mounting seat is provided with a first snap-fit part, and the first snap-fit part is protruding from the side of the mounting seat.
[0009] Furthermore, the first latching part can extend into the space between the two first chair legs in the second direction, and abut against the first chair legs in the first direction; The first snap-fit portion has two opposite ends along the second direction and a middle position located between the two ends. The thickness of the first snap-fit portion gradually increases from the middle position to the two ends, thereby forming a snap-fit arc surface on the surface of the first snap-fit portion. In the folded state, the snap-fit arc surface abuts against the outer wall surface of the first chair leg.
[0010] Furthermore, the minimum distance between the two intermediate positions in the first direction is greater than the minimum distance between the two first chair legs in the first direction.
[0011] Furthermore, the seat body is provided with a second mounting hole, and in the folded state, the support arm is inserted into the second mounting hole; The inner wall of the second mounting hole is recessed outward to form a locking groove; a locking member is movably provided on the support arm, and the locking member can extend at least partially out of the support arm and engage in the locking groove, or retract the support arm to exit the locking groove.
[0012] Furthermore, the plate body is provided with an unlocking component and a traction component. One end of the traction component is connected to the unlocking component, and the other end of the traction component extends into the support arm and is connected to the locking component. The unlocking component can slide relative to the plate body to pull the locking component out of the locking groove.
[0013] Furthermore, the first housing is provided with a first protruding rib, and the two ends of the first protruding rib are respectively provided with a first wire notch and a second wire notch, and the first wire notch and the second wire notch communicate with each other to form a first wire groove. The second housing is provided with a second protruding rib, and the two ends of the second protruding rib are respectively provided with a third wire notch and a fourth wire notch. The third wire notch and the fourth wire notch communicate to form a second wire groove. The width of the third wire notch is smaller than the diameter of the traction member, and the width and depth of the fourth wire notch are both larger than the diameter of the traction member. The first rib connects with the second rib, so that the first wire harness groove and the second wire harness groove together form a wire harness hole through which the traction member can pass.
[0014] Furthermore, the mounting base and the second housing are formed as an integral structure.
[0015] Furthermore, child seats were also disclosed, including: Support components; The seat body is connected to the support assembly; A tray assembly, which is detachably connected to the seat body or the support assembly.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the child seat in an embodiment of the present invention, with the tray assembly in the usage state; Figure 2 for Figure 1 A cross-sectional view of the child seat shown; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a schematic diagram of the support component in an embodiment of the present invention, with the plate component in a stowed state; Figure 5 This is a schematic diagram of the structure of the plate assembly in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the second shell in an embodiment of the present invention; Figure 7 for Figure 6 A magnified view of a section at point B in the middle; Figure 8 This is a schematic diagram of the structure of the first housing in an embodiment of the present utility model; Figure 9 for Figure 8 A magnified view of a section at point C; Figure label: 100. Dinner plate assembly; 110. Dinner plate body; 111. First housing; 1111. First protruding rib; 1112. First wire harness notch; 1113. Second wire harness notch; 1114. First wire harness groove; 1115. Connector; 112. Second housing; 1121. Second protruding rib; 1122. Third wire harness notch; 1123. Fourth wire harness notch; 1124. Second wire harness groove; 120. Support arm; 121. Locking element; 122. Locking part; 130. Mounting base; 131. First snap-fit part; 132. First mounting hole; 140. Unlocking element; 150. Traction element; 200. Seat body; 210. Locking groove; 300. Support assembly; 310. First chair frame; 311. First chair leg; 312. Support column; 320. Second chair frame; 321. Second chair leg. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0022] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0023] Please refer to Figures 5 to 9 This embodiment discloses a tray assembly 100 for use in a child car seat. The child car seat can be referred to... Figures 1 to 4 The child seat includes a seat body 200 and a support assembly 300. The support assembly 300 includes a pair of first chair legs 311 arranged side by side. The tray assembly 100 includes a tray body 110, a mounting base 130, and a support arm 120. The mounting base 130 is protrudingly mounted on the bottom of the tray body 110 and includes a pair of first snap-fit portions 131 spaced apart along a first direction for detachably connecting the first chair legs 311. The support arm 120 is disposed on the mounting base 130 and includes a second snap-fit portion for detachably connecting the tray body 200. The tray assembly 100 has a folded state and a used state. In the folded state, the tray assembly 100 is connected between the pair of first chair legs 311 via the pair of first snap-fit portions 131. In the used state, the support arm 120 is connected to the tray body 200 via the second snap-fit portion. Exemplarily, the first direction can be understood as the side-by-side direction of the pair of first chair legs 311.
[0024] Please refer to Figure 5 , Figure 6 and Figure 8 The plate body 110 includes a first housing 111 and a second housing 112 connected to each other. A mounting base 130 is disposed on the second housing 112, and the mounting base 130 has a first mounting hole 132. The first housing 111 has a connector 1115, and a support arm 120 extends into the first mounting hole 132 and is connected to the connector 1115. Specifically, the first housing 111 and the second housing 112 are detachably connected. One end of the support arm 120 extends into the first mounting hole 132 of the first housing 111 and is connected to the connector 1115 of the second housing 112, thereby achieving the connection and fixation of the support arm 120 to the plate body 110. Exemplarily, the connection structure of the connector 1115 and the support arm 120 can be specifically configured as a bolt connection, a pin connection, or other forms of connection structure.
[0025] Please refer to Figure 5The plate body 110 has two mounting seats 130, each mounting seat 130 having a first engaging portion 131 protruding from the side of the mounting seat 130. As the mounting seat 130 gradually extends between the two first chair legs 311, the two first engaging portions 131 protruding from the side of the mounting seat 130 gradually approach the first chair legs 311, and the two first chair legs 311 press inward against the first engaging portions 131 to lock the mounting seat 130 in place, thus achieving a detachable connection between the mounting seat 130 and the pair of first chair legs 311. When it is necessary to separate the mounting seat 130 and the first chair legs 311, simply pull the mounting seat 130 out in the reverse direction to separate the first chair legs 311 from the first engaging portions 131.
[0026] Please refer to Figure 4 and Figure 5 The first engaging portion 131 can extend into the space between the two first chair legs 311 along the second direction, and abut against the first chair legs 311 along the first direction. The first engaging portion 131 has two opposite ends along the second direction and a middle position located between the two ends. The thickness of the first engaging portion 131 gradually increases from the middle position towards the two ends, thereby forming an engaging arc surface on the surface of the first engaging portion 131. In the retracted state, the engaging arc surface abuts against the outer wall surface of the first chair legs 311. Exemplarily, the first direction can be specifically the side-by-side direction of a pair of first chair legs 311, and the second direction can be understood as the direction in which the mounting base 130 extends into or out of the space between the two first chair legs 311, and the two directions intersect or are perpendicular. The first snap-fit part 131 is shaped as a protruding structure that is thin in the middle and thick at both ends, so that the outer surface of the first snap-fit part 131 forms a snap-fit arc surface. The arc surface can fit and conform to the outer wall surface of the first chair leg 311, thereby increasing the contact area between the first snap-fit part 131 and the first chair leg 311, enhancing the snap-fit strength between the two, and preventing the plate assembly 100 from slipping off the first chair leg 311.
[0027] Specifically, the first engaging portion 131 has a starting end and an ending end, respectively, positioned opposite each other along the second direction. During the insertion of the mounting base 130 into the two first chair legs 311, the starting end of the first engaging portion 131 first contacts the first chair leg 311, continuing until the middle position of the first engaging portion 131 abuts against the first chair leg 311. At this point, both the starting end and the ending end serve a limiting function. When the first engaging portion 131 tends to disengage along the second direction, the ending end of the first engaging portion 131 abuts against the first chair leg 311. When the first engaging portion 131 tends to disengage in the opposite direction to the second direction, the starting end abuts against the first chair leg 311. This prevents the first engaging portion 131 from separating from the first chair leg 311 without human intervention, thereby improving the connection strength between the mounting base 130 and the two first chair legs 311. Of course, if it is necessary to manually release the connection between the two, a greater force can be applied. A greater force can drive the beginning of the first locking part 131 past the first chair leg 311, thereby separating the first locking part 131 from the first chair leg 311 and releasing the connection between the mounting base 130 and the two first chair legs 311.
[0028] Furthermore, the minimum distance between the two intermediate positions in the first direction is greater than the minimum distance between the two first chair legs 311 in the first direction. Since the minimum distance between the two intermediate positions is greater than the minimum distance between the two first chair legs 311, when a pair of first engaging portions 131 engage between a pair of first chair legs 311, the two first chair legs 311 can simultaneously press the first engaging portions 131 inward, thereby creating a preload force between the first engaging portions 131 and the first chair legs 311 generated by the deformation of the first engaging portions 131, preventing the mounting base 130 from slipping off the first chair legs 311. For example, the first engaging portions 131 are made of an elastic material, or an elastic material is provided on the surface of the first chair legs 311. When the first engaging portions 131 abut against the first chair legs 311, the elastic material can undergo elastic deformation, thereby providing a preload force that presses the first engaging portions 131 and the first chair legs 311 against each other, preventing the tray assembly 100 from falling off the first chair legs 311.
[0029] Please refer to Figure 1In this embodiment, the first chair leg 311 includes a support column 312. When the tray assembly 100 is in the retracted state, each first snap-fit portion 131 abuts against one support column 312. The maximum distance between the surfaces of the two first snap-fit portions 131 (the surfaces that abut against the support column 312, i.e., the snap-fit arc surfaces) in a first direction is greater than the minimum distance between the two support columns 312 in the first direction. Specifically, since the maximum distance between the surfaces of the two first snap-fit portions 131 in the first direction is greater than the minimum distance between the two support columns 312, when the mounting base 130 extends into the two support columns 312, the two support columns 312 exert an inward force on the first snap-fit portions 131, thereby snapping the mounting base 130 between the two support columns 312. For example, the surface of the first snap-fit portion 131 can be set as a flat surface or an arc surface. Along the direction in which the mounting base 130 extends between the two first chair legs 311, the minimum distance between the surfaces of the two first snap-fit portions 131 in the first direction gradually increases, so that as the mounting base 130 extends into the two first chair legs 311, the two pillars 312 gradually snap the two first snap-fit portions 131, thereby realizing the snap-fit of the two first chair legs 311 onto the mounting base 130.
[0030] Please refer to Figure 2 The seat body 200 has a second mounting hole. In the retracted state, the support arm 120 is inserted into the second mounting hole. The inner wall of the second mounting hole is recessed outward to form a locking groove 210. A locking member 121 is movably provided on the support arm 120. The locking member 121 can extend at least partially out of the support arm 120 and engage with the locking groove 210, or retract the support arm 120 to exit the locking groove 210. For example, the locking member 121 can be configured to slide or rotate relative to the support arm 120, thereby driving the locking member 121 to extend into or exit the locking groove 210 to lock or unlock the support arm 120 and the seat body 200. When the locking member 121 extends into the second mounting hole, it abuts against the inner wall of the locking groove 210 along the length direction of the second mounting hole, thereby restricting the sliding of the support arm 120 along the length direction of the second mounting hole and locking the support arm 120 within the second mounting hole.
[0031] Please refer to Figure 3 and Figure 6The tray body 110 is equipped with an unlocking member 140 and a pulling member 150. One end of the pulling member 150 is connected to the unlocking member 140, and the other end of the pulling member 150 extends into the support arm 120 and is connected to the locking member 121. The unlocking member 140 can slide relative to the tray body 110 to pull the locking member 121 out of the locking groove 210. Specifically, when the unlocking member 140 is moved, the unlocking member 140 pulls the pulling member 150, and the pulling member 150 transmits the pulling force of the unlocking member 140 to the locking member 121, causing the locking member 121 to exit the locking groove 210, thereby releasing the lock between the support arm 120 and the seat body 200, allowing the support arm 120 to exit from the second mounting hole. At the same time, the unlocking member 140 is provided with a first return spring. During the process of moving the unlocking member 140, the first return spring is compressed simultaneously, so that after the unlocking member 140 is released, the first return spring releases its elastic force and returns the unlocking member 140 to its initial position. Of course, the specific location and structure of the first reset spring can be designed differently as needed. For example, the first reset spring can be set as a helical spring, with its two ends abutting against the unlocking member 140 and the plate body 110, respectively.
[0032] Furthermore, since the traction member 150 needs to pass through the interior of the plate body 110 into the interior of the support arm 120, the traction member 150 is made of a flexible material such as a bendable steel wire or nylon rope. This type of flexible material allows the traction member 150 to transmit the pulling force of the unlocking member 140 in a non-linear direction, thereby pulling the locking member 121 out of the locking groove 210. In this embodiment, a second return spring is also provided at the locking member 121. After the unlocking member 140 is released, the first return spring releases its elastic force to drive the unlocking member 140 to reset, and the second return spring releases its elastic force to drive the locking member 121 into the locking groove 210. Of course, the specific position and structural design of the second return spring can be designed differently as needed. For example, the second return spring can be set as a torsion spring and sleeved on the rotating shaft of the locking member 121.
[0033] For example, one end of the locking member 121 is rotatably connected to the support arm 120, and the other end is provided with a locking part 122, which can extend into the locking groove 210 to achieve locking. When the unlocking member 140 is moved, the traction member 150 is driven and pulls the locking member 121 to rotate relative to the support arm 120, thereby causing the locking part 122 to exit the locking groove 210.
[0034] In some other embodiments, the traction member 150 can be configured to directly pull the locking member 121 to slide along the width or height direction of the support arm 120, thereby causing the locking member 121 to exit the locking groove 210. Alternatively, a conical block that can slide along the length direction of the support arm 120 can be provided. The conical block and the locking member 121 are engaged by an inclined surface, so that the sliding of the conical block along the length direction drives the locking member 121 to slide along the width direction, so as to slide into or out of the locking groove 210. That is, similar to a wedge drive mechanism, this structure has mature applications in various fields and will not be described in detail here.
[0035] Please refer to Figures 6 to 9 In this embodiment, the first housing 111 is provided with a first protruding rib 1111, and the two ends of the first protruding rib 1111 are respectively provided with a first wire harness notch 1112 and a second wire harness notch 1113. The first wire harness notch 1112 and the second wire harness notch 1113 communicate to form a first wire harness groove 1114. The second housing 112 is provided with a second protruding rib 1121, and the two ends of the second protruding rib 1121 are respectively provided with a third wire harness notch 1122 and a fourth wire harness notch 1123. The third wire harness notch 1122 and the fourth wire harness notch 1123 communicate to form a second wire harness groove 1124. The width of the third wire harness notch 1122 is smaller than the diameter of the traction member 150, and the width and depth of the fourth wire harness notch 1123 are both larger than the diameter of the traction member 150. The first protruding rib 1111 and the second protruding rib 1121 are connected so that the first wire harness groove 1114 and the second wire harness groove 1124 surround to form a wire harness hole through which the traction member 150 can pass.
[0036] Specifically, because the width of the third wire harness notch 1122 is smaller than the diameter of the traction member 150, the traction member 150 can be securely held within the third wire harness notch 1122. Simultaneously, the width and height of the fourth wire harness notch 1123 are both greater than the diameter of the traction member 150, allowing the traction member 150 a certain amount of room to move within the fourth wire harness notch 1123. This prevents the traction member 150 from being installed too tightly and coming out of the first wire harness groove 1114 during use, thus preventing the plate adjustment function from malfunctioning.
[0037] It should be noted that the width of the third wire notch 1122 is slightly smaller than the diameter of the traction member 150. Although the traction member 150 is stuck in the third wire notch 1122, it can still be pulled by the unlocking member 140, thereby sliding relative to the third wire notch 1122 to achieve traction on the locking member 121.
[0038] Meanwhile, the first housing 111 is also provided with a first protruding rib 1111, and the first protruding rib 1111 forms a first wire harness groove 1114. When the first housing 111 is connected to the second housing 112, the second protruding rib 1121 can be connected to the first protruding rib 1111, thereby connecting the second wire harness groove 1124 with the first wire harness groove 1114. The first wire harness groove 1114 and the second wire harness groove 1124 together form a wire harness hole, so as to wrap the traction member 150 into the wire harness hole, further enhancing the constraint effect on the traction member 150 and preventing the traction member 150 from coming out of the wire harness hole.
[0039] Please refer to Figure 5 and Figure 6 The mounting base 130 and the second housing 112 are molded into an integral structure to reduce assembly steps, lower labor costs, and enhance the structural strength of the second housing 112 and the mounting base 130, so as to avoid damage due to excessive force during multiple switching between the use state and the storage state.
[0040] In this embodiment, when the tray assembly 100 is in use, the support arm 120 of the tray assembly 100 can be detachably connected to the seat body 200, so that the tray assembly 100 is in use to assist with eating, etc. When the tray assembly 100 is not in use, the support arm 120 of the tray assembly 100 can be detached from the seat body 200, and then the mounting base 130 can be inserted between the two first chair legs 311, so that the tray assembly 100 can be stored in the support assembly 300 to prevent the tray assembly 100 from being lost.
[0041] Please refer to Figures 1 to 4 This embodiment also discloses a child seat, including: a support assembly 300, a seat body 200, and a tray assembly 100. The seat body 200 is connected to the support assembly 300; the tray assembly 100 is detachably connected to the seat body 200 or the support assembly 300. The support assembly 300 includes a first chair frame 310 and a second chair frame 320 that are rotatably connected. The first chair frame 310 includes two first chair legs 311, and the second chair frame 320 includes two second chair legs 321. The first chair legs 311 and the second chair legs 321 can simultaneously contact the ground to support the entire child seat. The seat body 200 is connected above the support assembly 300. The tray assembly 100 has a use state and a storage state. In the use state, the tray assembly 100 is detachably connected to the seat body 200; in the storage state, the tray assembly 100 is detachably connected to the first chair frame 310.
[0042] Furthermore, the child seat also has a folded state and an unfolded state. The angle between the first seat frame 310 and the second seat frame 320 in the unfolded state is greater than the angle in the folded state. In the unfolded state, the tray assembly 100 is in use and is detachably connected to the seat body 200 for easy use; in the folded state, the tray assembly 100 is in storage and is detachably connected to the first seat frame 310 for easy storage.
[0043] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A tray assembly, installed in a child seat, the child seat comprising a seat body and a support assembly, the support assembly comprising a pair of first seat legs, characterized in that, The plate assembly includes: The plate itself; The mounting base is protrudingly mounted on the bottom of the plate body. The mounting base includes a pair of first snap-fit portions spaced apart along a first direction, the pair of first snap-fit portions being used to detachably connect the first chair leg. A support arm is disposed on the mounting base, the support arm including a second snap-fit portion for detachably connecting to the seat body; The plate assembly has a storage state and a use state; in the storage state, the plate assembly is connected between the pair of first chair legs through the pair of first snap-fit parts; in the use state, the support arm is connected to the seat body through the second snap-fit part.
2. The plate assembly according to claim 1, characterized in that, The plate body includes a first shell and a second shell connected to each other. The mounting base is disposed on the second shell and has a first mounting hole. The first shell has a connector and the support arm extends into the first mounting hole and is connected to the connector.
3. The plate assembly according to claim 1, characterized in that, The plate body is provided with two mounting seats, each mounting seat is provided with a first snap-fit part, and the first snap-fit part is protruding from the side of the mounting seat.
4. The plate assembly according to claim 3, characterized in that, The first latching part can extend into the space between the two first chair legs in the second direction, and the first latching part abuts against the first chair legs in the first direction; The first snap-fit portion has two opposite ends along the second direction and a middle position located between the two ends. The thickness of the first snap-fit portion gradually increases from the middle position to the two ends, thereby forming a snap-fit arc surface on the surface of the first snap-fit portion. In the folded state, the snap-fit arc surface abuts against the outer wall surface of the first chair leg.
5. The plate assembly according to claim 4, characterized in that, The minimum distance between the two intermediate positions in the first direction is greater than the minimum distance between the two first chair legs in the first direction.
6. The plate assembly according to claim 2, characterized in that, The seat body has a second mounting hole, and the support arm is inserted into the second mounting hole when the seat is in the stowed state. The inner wall of the second mounting hole is recessed outward to form a locking groove; a locking member is movably provided on the support arm, and the locking member can extend at least partially out of the support arm and engage in the locking groove, or retract the support arm to exit the locking groove.
7. The plate assembly according to claim 6, characterized in that, The plate body is provided with an unlocking component and a traction component. One end of the traction component is connected to the unlocking component, and the other end of the traction component extends into the support arm and is connected to the locking component. The unlocking component can slide relative to the plate body to pull the locking component out of the locking groove.
8. The plate assembly according to claim 7, characterized in that, The first housing is provided with a first protruding rib, and the two ends of the first protruding rib are respectively provided with a first wire notch and a second wire notch. The first wire notch and the second wire notch are connected to form a first wire groove. The second housing is provided with a second protruding rib, and the two ends of the second protruding rib are respectively provided with a third wire notch and a fourth wire notch. The third wire notch and the fourth wire notch communicate to form a second wire groove. The width of the third wire notch is smaller than the diameter of the traction member, and the width and depth of the fourth wire notch are both larger than the diameter of the traction member. The first rib connects with the second rib, so that the first wire harness groove and the second wire harness groove together form a wire harness hole through which the traction member can pass.
9. The plate assembly according to claim 2, characterized in that, The mounting base and the second housing are integrally formed.
10. A child car seat, characterized in that, include: Support components; The seat body is connected to the support assembly; The tray assembly as described in any one of claims 1 to 9, wherein the tray assembly is detachably connected to the seat body or the support assembly.