A foldable child safety seat

Abstract

The application provides a foldable child safety seat, which comprises a base assembly, a headrest assembly and a backrest assembly, the backrest assembly is movably connected with the base assembly; the backrest assembly comprises a movable connecting piece and a plurality of mutually detachably connected building block type housings, each building block type housing is provided with a first connecting part and a second connecting part; the adjacent two building block type housings are also connected through the movable connecting piece, when the adjacent two building block type housings are separated from each other, the backrest assembly forms an unfolded part and a folded part which are connected with each other through the movable connecting piece, the unfolded part is connected with the headrest assembly, the base assembly comprises a base body, the base body is provided with a containing cavity which is suitable for placing the folded part, the structure is compact, the headrest assembly can also be folded relative to the backrest assembly, so that the overall appearance volume is small after being folded, and the height of the backrest can be adjusted by separating the different adjacent two building block type housings.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile safety products, in particular to a foldable child safety seat. BACKGROUND

[0002] The existing child safety seat also needs to occupy a large space when not in use. In order to solve this problem, a new type of child safety seat appears on the market, which is designed with a foldable structure. However, the folding structure directly folds the chair back and the base, and the overall volume after folding is still large. In addition, the chair back of the traditional child safety seat is an integral plastic injection molding, and the height of the chair back cannot be adjusted. SUMMARY

[0003] To solve at least one of the above problems, the present application first provides a foldable child safety seat, which comprises a base assembly, a headrest assembly and a chair back assembly, the headrest assembly is foldably connected with the top end of the chair back assembly, and the chair back assembly is movably connected with the base assembly; the chair back assembly comprises a movable connecting piece and a plurality of mutually detachable connecting building block type housings, each of the building block type housings is provided with a first connecting part and a second connecting part, the first connecting part on the upper building block type housing and the second connecting part on the lower building block type housing are connected with each other to fix the positions of the adjacent two building block type housings; the adjacent two building block type housings are also connected through the movable connecting piece, when the adjacent two building block type housings are separated from each other, the chair back assembly forms an unfolded part and a folded part after being foldably connected through the movable connecting piece, the unfolded part is connected with the headrest assembly, and the base assembly comprises a base body, and the base body is provided with a containing cavity suitable for placing the folded part.

[0004] Optionally, the base assembly further comprises a rear cover movably connected to the base body, when the folded part is placed in the containing cavity, the upper side of the rear cover abuts against the lower side of the unfolded part, and the front side of the rear cover abuts against the rear side of the folded part.

[0005] Optionally, the front lower end of the rear cover is hingedly connected to the rear lower end of the base body.

[0006] Optionally, the headrest assembly comprises a headrest body, a headrest side wing and a chair back side wing, and the headrest side wing and the chair back side wing are hingedly connected with the headrest body.

[0007] Optionally, when the headrest assembly is unfolded, the headrest side wing and the chair back side wing have a gap suitable for the vehicle safety belt to pass through, and a lock catch is arranged at the gap to prevent the vehicle safety belt from sliding out of the gap.

[0008] Optionally, when the headrest assembly is folded forward relative to the backrest assembly, the headrest assembly is arranged close to the base body.

[0009] Optionally, the movable connecting member is a connecting belt, the connecting belt is vertically arranged on all the building block casings, each building block casing is connected with a pressing block, and the pressing block is used for pressing the connecting belt on the edge of the building block casing.

[0010] Optionally, a plurality of through holes are arranged on the connecting belt at intervals, and a cylinder is arranged in each building block casing and matched with the through hole.

[0011] Optionally, the movable connecting member is a folding page, one side of the folding page is connected with the edge of the building block casing, and the other side is detachably connected with the edge of the adjacent building block casing.

[0012] Optionally, a storage bag is further arranged, and when the base assembly, the backrest assembly and the headrest assembly are all folded, a folding state seat is formed, and the storage bag is wrapped outside the folding state seat.

[0013] Optionally, the first connecting part is a triangular clamping groove, the second connecting part is a triangular clamping buckle, and the detachable connection between two adjacent building block casings is realized by the mutual connection or mutual separation of the triangular clamping groove on the upper building block casing and the triangular clamping buckle on the lower building block casing.

[0014] Optionally, the backrest assembly further comprises a locking assembly, the locking assembly comprises a fixing block, the fixing block is provided with a boss, the building block casing is provided with a hole for movably mounting the boss, and the edge of the hole is provided with the triangular clamping buckle; when the triangular clamping buckle is connected with the triangular clamping groove of the upper building block casing and the boss is inserted into the hole, the adjacent two building block casings are locked in an unfolded state.

[0015] Optionally, the fixing block is further provided with a switch, and the building block casing is exposed and provided with an opening corresponding to the switch; when the switch is pressed to move the boss out of the hole, the adjacent two building block casings are folded.

[0016] Relative to the prior art, the foldable child safety seat in the application realizes mutual fixing and mutual folding of adjacent two building block type shells through the combination of the building block type shells and the movable connecting piece, realizes unfolding fixing of adjacent building block type shells through the connection of the first connecting part and the second connecting part, realizes folding through the movable connecting piece when the adjacent two building block type shells are separated, is simple and convenient to operate, the folding part is placed in the containing cavity of the base, the structure is compact, the headrest assembly can also be folded relative to the backrest assembly, the overall appearance volume is small after folding, storage is convenient, carrying is convenient, and the adjustment of the backrest height can be realized by separating different adjacent two building block type shells, i.e. adjusting the number of the building block type shells of the unfolding part. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an exploded view of the foldable child safety seat of the embodiment of the application;

[0018] Figure 2 It is a structure view of the foldable child safety seat of the embodiment of the application connected with the vehicle-mounted safety belt;

[0019] Figure 3 It is a sectional view of the foldable child safety seat of the embodiment of the application when the backrest is at the highest;

[0020] Figure 4 It is a sectional view of the foldable child safety seat of the embodiment of the application when the backrest height is adjusted after the backrest cover is opened;

[0021] Figure 5 It is a sectional view of the foldable child safety seat of the embodiment of the application when the backrest is adjusted to be low;

[0022] Figure 6 It is a sectional view of the foldable child safety seat of the embodiment of the application when the backrest is at the lowest;

[0023] Figure 7 It is a structure view of the foldable child safety seat of the embodiment of the application when the headrest side wing and the backrest side wing are folded;

[0024] Figure 8 It is a structure view of the foldable child safety seat of the embodiment of the application when the headrest assembly is folded;

[0025] Figure 9 It is a structure view of the foldable child safety seat of the embodiment of the application when the headrest side wing and the backrest side wing are folded;

[0026] Figure 10 It is a structure view of the foldable child safety seat of the embodiment of the application when the headrest side wing and the backrest side wing are folded;

[0027] Figure 11Structure diagram of adjacent two building block type shells of the embodiment of the present application connected through folding of the hinge;

[0028] Figure 12 Structure diagram of adjacent two building block type shells of the embodiment of the present application unfolded and fixed;

[0029] Figure 13 Structure diagram of the child safety seat of the embodiment of the present application when being stored in the storage bag;

[0030] Figure 14 Partial exploded view of the child safety seat of the embodiment of the present application.

[0031] Explanation of reference signs:

[0032] 1, base assembly; 11, base body; 111, containing cavity; 112, mounting cavity; 12, rear cover; 2, headrest assembly; 21, headrest body; 22, headrest side wing; 23, chair back side wing; 24, lock catch; 3, chair back assembly; 31, connecting belt; 311, through hole; 32, building block type shell; 321, first connecting part; 322, second connecting part; 323, cylinder; 324, step; 325, hole; 326, opening; 33, unfolding part; 34, folding part; 35, pressing block; 36, hinge; 37, fixing block; 371, boss; 372, switch; 4, storage bag; 5, vehicle-mounted safety belt; 6, pressing plate; 7, fixing piece. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship when the product is normally used.

[0035] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. The coordinate system YZ is provided in the drawings of the embodiments of the present application, wherein the positive direction of Y axis represents the front direction, the negative direction of Y axis represents the rear direction, the positive direction of Z axis represents the upper direction, and the negative direction of Z axis represents the lower direction.

[0036] The embodiment of the present application provides a foldable child safety seat, which combines Figures 1 to 12As shown, including base assembly 1, headrest assembly 2 and backrest assembly 3, the headrest assembly 2 and the top end of the backrest assembly 3 are foldably connected, and the backrest assembly 3 is movably connected with the base assembly 1; the backrest assembly 3 comprises a movable connecting piece and a plurality of mutually detachably connected building block type housings 32, each of the building block type housings 32 is provided with a first connecting part 321 and a second connecting part 322, and the first connecting part 321 on the upper building block type housing 32 is connected with the second connecting part 322 on the lower building block type housing 32 to realize the mutual fixation of the positions of the adjacent two building block type housings 32; the adjacent two building block type housings 32 are also connected through the movable connecting piece, and when the adjacent two building block type housings 32 are separated from each other, the backrest assembly 3 forms an unfolded part 33 and a folded part 34 after being foldably connected through the movable connecting piece, the unfolded part 33 is connected with the headrest assembly 2, and the base assembly 1 comprises a base body 11 provided with a containing cavity 111 adapted to place the folded part 34.

[0037] The building block type housings 32 are identical in shape, which facilitates processing and reduces production cost; the movable connecting piece can be a metal piece, a plastic piece or cloth, which can realize the hinged connection of the adjacent two building block type housings 32, can be folded at any angle, and facilitates folding; the movable connecting piece is fixed at the edge position of the building block type housing 32 to realize the mutual rotation of the adjacent two building block type housings 32 around the edge; the building block type housing 32 is preferably a cuboid structure, and when the adjacent two building block type housings 32 are fixed, the lower surface of the upper building block type housing 32 abuts against the upper surface of the lower building block type housing 32, and a plurality of building block type housings 32 are stacked in sequence to form a firm backrest.

[0038] The first connecting part 321 on the upper building block type housing 32 is connected with the second connecting part 322 on the lower building block type housing 32 to realize the detachable connection between the adjacent two building block type housings 32, when the first connecting part 321 and the second connecting part 322 are connected, the adjacent two building block type housings 32 are connected and fixed, realizing the unfolding of the backrest, and when the first connecting part 321 and the second connecting part 322 are separated, the adjacent two building block type housings 32 are detached from each other, and under the connection of the movable connecting piece, the folding of the two building block type housings 32 is realized.

[0039] The unfolded part 33 refers to the part of the chair back used, the folded part 34 refers to the part of the chair back not needed to be used, and the accommodating cavity 111 is used to store the folded part 34 not used. On the one hand, the height of the chair back can be adjusted by folding the folded part 34 into the accommodating cavity 111 or pulling the folded part 34 out of the accommodating cavity 111, and on the other hand, the part of the chair back not used can be stored, space is saved, and the structure is neat. The accommodating cavity 111 is arranged at the bottom of the base, and the overall appearance is not affected when the part is stored. A supportable turned edge is arranged at the edge of the accommodating cavity 111, or the accommodating cavity 111 is designed as a slot with only one opening, so that the folded part 34 can be stably stored in the accommodating cavity 111.

[0040] When the height of the chair back needs to be lowered, the two building block type shells 32 corresponding to the position of the height to be lowered are separated to be folded. The height of the chair back can be adjusted by separating the two building block type shells 32 at different positions, and the folded part 34 is stored in the accommodating cavity 111, so that the overall structure is compact. When the height of the chair back is adjusted each time, only the two adjacent building block type shells 32 corresponding to the position are separated, and the adjacent building block type shells 32 at other positions are still connected and unfolded. The chair back can be unfolded and fixed, and the building block type shells 32 not used as the chair back can be conveniently stored.

[0041] When the whole needs to be stored, the two building block type shells 32 at appropriate positions can be separated and then folded, the folded part 34 is stored in the accommodating cavity 111, and then the headrest assembly 2 is folded forward by 90° relative to the chair back assembly 3 to realize the folding of the headrest assembly 2, so that the overall volume is small and convenient to store. Alternatively, all the building block type shells 32 can be stored in the accommodating cavity 111, and then the headrest assembly 2 is folded forward by 180° relative to the chair back assembly 3 to realize the folding of the headrest assembly 2, so that the overall volume is small and convenient to store.

[0042] The foldable child safety seat in the embodiment realizes the mutual fixing and folding of the positions of the two adjacent building block type shells 32 through the combination of the building block type shells 32 and the movable connecting pieces. The adjacent building block type shells 32 are unfolded and fixed through the connection of the first connecting part 321 and the second connecting part 322, and are folded through the movable connecting pieces when the two adjacent building block type shells 32 are separated. The operation is simple and convenient, the folded part 34 is placed in the accommodating cavity 111 of the base, the structure is compact, the headrest assembly 2 can also be folded relative to the chair back assembly 3, the overall appearance and volume are small after folding, storage and transportation are convenient, and the height of the chair back can be adjusted by separating different adjacent two building block type shells 32, that is, adjusting the number of the building block type shells 32 of the unfolded part 33, so that the age range is large.

[0043] Optionally, in combination withFigure 1 、 Figure 3 、 Figure 4 、 Figure 5 As shown in

[0044] Preferably, the rear cover 12 is a hollow shell, which is light in weight but has certain deformation resistance; the rear cover 12 and the base body 11 can be connected through a hinge, a sliding connection or a detachable connection to open and close, and the rear cover 12 can be used to store and pull out the chair back assembly 3 when it is opened, and to press the chair back assembly 3 when it is closed, i.e. the upper side of the rear cover 12 is used to press the lower side of the unfolded part 33, and the front side of the rear cover 12 is used to press the rear side of the folded part 34, so as to fix the folded position of the chair back assembly 3 and thus fix the height adjustment of the chair back.

[0045] Optionally, as shown in Figure 3 、 Figure 4 The front lower end of the rear cover 12 is hingedly connected to the rear lower end of the base body 11.

[0046] Here, the orientation description corresponds to the state when the rear cover 12 is closed, and the front lower end of the rear cover 12 is hingedly connected to the rear lower end of the base body 11, so that the rear cover 12 can be opened or closed around this hinge point, and when it is opened, it will not interfere with the separation operation of the adjacent two building block type shells 32 at different positions, nor will it affect the storage of the folded part 34 into the accommodating cavity 111; the rear cover 12 and the base body 11 are connected through a hinge to open and close, which is simple in structure and convenient to operate.

[0047] Optionally, as shown in Figure 1 、 Figure 2 、 Figure 7 The headrest assembly 2 comprises a headrest body 21, a headrest side wing 22 and a chair back side wing 23, and the headrest side wing 22 and the chair back side wing 23 are hingedly connected to the headrest body 21.

[0048] The headrest side wing 22 and the headrest body 21 can be hingedly connected through the cooperation of a pin shaft and a shaft hole, or through a connecting piece similar to the above-mentioned movable connecting piece, to realize folding or unfolding of the headrest side wing 22 relative to the headrest body 21. When unfolded, the headrest side wing 22 and the headrest body 21 are fixed by a connection structure similar to the above-mentioned first connecting part 321 and second connecting part 322, and will not be repeated here. Similarly, the chair back side wing 23 and the headrest body 21 can be hingedly connected through the cooperation of a pin shaft and a shaft hole, or through a connecting piece similar to the above-mentioned movable connecting piece, to realize folding or unfolding of the chair back side wing 23 relative to the headrest body 21. When unfolded, the chair back side wing 23 and the headrest body 21 are fixed by a connection structure similar to the above-mentioned first connecting part 321 and second connecting part 322, and will not be repeated here.

[0049] Optionally, in combination with Figure 1 , Figure 2 As shown in the figure, when the headrest assembly 2 is unfolded, the headrest side wing 22 and the chair back side wing 23 have a gap suitable for the vehicle safety belt 5 to pass through, and a lock 24 is arranged at the gap to prevent the vehicle safety belt 5 from sliding out of the gap.

[0050] The vehicle safety belt 5 is used to fix the child safety seat to the car seat, and the lock 24 can be installed on the headrest side wing 22 or the chair back side wing 23. By arranging the lock 24 at the gap, the vehicle safety belt 5 can be blocked in the gap, thereby ensuring firm connection of the child safety seat to the car seat and ensuring safety of the vehicle.

[0051] Optionally, in combination with Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 13 As shown in the figure, when folded, the headrest assembly 2 is folded forward relative to the chair back assembly 3, and the headrest assembly 2 is arranged close to the base body 11.

[0052] The headrest assembly 2 and the block-type shell 32 are hingedly connected to realize folding connection. The structure of the hinged connection can be realized by the cooperation of a pin shaft and a shaft hole, to realize folding or unfolding of the headrest assembly 2 relative to the chair back assembly 3. When unfolded, the headrest assembly 2 and the block-type shell 32 are fixed by a connection structure similar to the above-mentioned first connecting part 321 and second connecting part 322, and will not be repeated here. The overall height of the headrest assembly 2 is similar to or the same as the front-to-back width of the base body 11, so that the headrest assembly 2 and the base body 11 can overlap when the headrest assembly 2 is folded forward 90° or 180° relative to the chair back assembly 3. In this way, the overall shape presents a relatively square structure, which is convenient for folding.

[0053] Optionally, in combination with Figure 1 , Figure 14 As shown in the figure, the movable connection is a connecting belt 31, which vertically spans all the building block casings 32. Each building block casing 32 is connected with a pressing block 35, which is used to press the connecting belt 31 against the edges of the building block casing 32.

[0054] The connecting belt 31 is flexible and can be made of cloth. The length of the connecting belt 31 is equal to or greater than the total height of all the building block casings 32 after being stacked in sequence, so that the connecting belt 31 can string all the building block casings 32 together. The pressing plate 6 is a rectangular plate structure. One face of the building block casing 32 is open to facilitate the installation of the connecting belt 31. The pressing plate 6 is installed on this open face to press the connecting belt 31 against the upper and lower edges of the building block casing 32. The adjacent two building block casings 32 are hingedly connected by the connecting belt 31, thereby achieving the folding of the chair back. The connection structure is simple and firm, and the implementation is convenient. When the adjacent two building block casings 32 are separated from each other, the folding connection is achieved by the connecting belt 31. One or more building block casings 32 on the upper side of the separation are connected to each other and unfolded to form a chair back. One or more building block casings 32 on the lower side of the separation are hidden in the accommodating cavity 111 of the base, thereby achieving the adjustment of the height of the chair back.

[0055] In this embodiment, the same building block casings 32 are used for lapping. The adjacent building block casings 32 are connected by the connecting belt 31 to form a whole, so that when the adjacent two building block casings 32 are separated, they can be folded by the connecting belt 31. The cost is low, the parts are simple, the installation is convenient, and only the unused part of the building block casing 32 needs to be folded by the connecting belt 31. Only the remaining part of the building block casing 32 is unfolded and fixed to form a chair back, so that the height of the chair back can be adjusted. The operation is convenient and simple, and the height level that can be adjusted is more, and the application range is wider.

[0056] Optionally, in combination with Figure 1 , Figure 14 As shown in the figure, a plurality of through holes 311 are arranged on the connecting belt 31 at intervals. Each building block casing 32 is provided with a cylindrical hole 323 that matches the through hole 311.

[0057] The cylindrical column 323 in each building block shell 32 is matched with the through hole 311 on the connecting band 31, which can effectively fix the connecting band 31 and prevent the connecting band 31 from moving vertically and prevent the folding chair back from loosening or falling off during use. In addition, the cylindrical column 323 can also be used to connect and fix the pressing block 35 through screws to achieve the firm connection of the pressing block 35 and the building block shell 32. The number of the connecting band 31 is two, and the two connecting bands 31 are arranged at intervals, so that each building block shell 32 has two cylindrical columns 323, which are respectively connected one by one with the connecting band 31. The arrangement of the two connecting bands 31 can not only ensure the firm connection between each building block shell 32, but also make the folding more convenient and reliable, and the bending or distortion does not occur.

[0058] Optionally, as shown in Figure 11 、 Figure 12 The movable connecting piece is a folding leaf 36, one side of the folding leaf 36 is connected with the edge of the building block shell 32, and the other side is detachably connected with the edge of the adjacent building block shell 32.

[0059] The folding leaf 36 is made of metal or plastic, and the folding leaf 36 can be folded at any angle. The adjacent two building block shells 32 are hingedly connected through the folding leaf 36, so that the hinged connection of the chair back assembly 3 is more flexible and stable. The detachable connection of the folding leaf 36 and the building block shell 32 can adjust the overall height of the chair back, such as disassembling some building block shells 32 when used by children. One side of the folding leaf 36 is integrally injection molded with the edge of the building block shell 32, which can save assembly steps, improve production efficiency, and make the connection between the folding leaf 36 and the building block shell 32 more firm.

[0060] The building block type shell 32 is provided with a step 324 connected with the folding leaf 36. The step 324 is recessed relative to the surface of the building block type shell 32 and has a certain depth to facilitate quick assembly of the folding leaf 36 with the building block type shell 32 and more accurate installation position. The height of the recess of the step 324 is the same as the thickness of the folding leaf 36, so that the folding leaf 36 can be flush with the surface of the building block type shell 32 after being installed on the step 324, ensuring the flatness of the overall surface and facilitating subsequent overall installation. The step 324 is provided with a first screw hole, and the folding leaf 36 is provided with a second screw hole corresponding to the first screw hole. The screw passes through the second screw hole and is connected with the first screw hole, realizing firm connection between the folding leaf 36 and the building block type shell 32. The number of the first screw holes on the step 324 is two, and the two first screw holes are arranged at intervals. The number of the second screw holes is also two to further ensure the firmness of the connection between the folding leaf 36 and the building block type shell 32. When the adjacent two building block type shells 32 are separated from each other, the folding leaf 36 is used to realize folding connection. One or more building block type shells 32 located on the upper side of the separation place are connected with each other and unfolded and fixed to form a chair back. One or more building block type shells 32 located on the lower side of the separation place are hidden in the accommodating cavity 111 of the base to realize adjustment of the height of the chair back.

[0061] In the embodiment, the same building block type shell 32 is used for lapping, and the folding leaf 36 is used to connect each adjacent building block type shell 32 to become a whole, which has high overall strength, low cost, simple parts, convenient installation, and only needs to fold the unused part of the building block type shell 32 through the folding leaf 36, and only the remaining part of the building block type shell 32 is unfolded and fixed to form a chair back, so that the height of the chair back can be adjusted, which is convenient and simple to operate and can adjust multiple levels of height and has a wider application range.

[0062] Optionally, in combination with the chair back assembly 3 shown in Figure 13 、 Figure 14 , further comprising a storage bag 4, which is wrapped outside the folding state chair when the base assembly 1, the chair back assembly 3 and the headrest assembly 2 are all folded.

[0063] The foldable child safety seat also has a use state, and the foldable child safety seat is in an unfolded state in the use state. At this time, the storage bag 4 can be folded at a designated position on the foldable child safety seat or pressed on the bottom of the foldable child safety seat. The connection between the storage bag 4 and the foldable child safety seat can be a fixed connection or a detachable connection, and is preferably a fixed connection, so as to avoid the loss of the storage bag 4 when not in use. The material of the storage bag 4 is preferably cloth, which is firm and can be easily folded and stored, and has good air permeability. In this embodiment, the storage bag 4 is provided, realizing the integrated design of the foldable child safety seat and the storage bag 4. When the foldable child safety seat is in a folded state, the storage bag 4 is directly unfolded and turned over to wrap the folded seat, so that the entire foldable child safety seat can be wrapped in the storage bag 4. After storage, the appearance is neat, and dust accumulation on the foldable seat can be prevented, keeping it clean. The use of the storage bag 4 makes carrying more convenient, and the overall structure is simple, easy to process and low in cost.

[0064] The base body 11 is provided with a mounting cavity 112 for placing the storage bag 4. The mounting cavity 112 can also be provided on other components of the foldable seat. The mounting cavity 112 is provided so that the storage bag 4 can be folded and placed in the mounting cavity 112 when the foldable seat is in a use state, so that the overall appearance is more neat and beautiful, and the storage bag 4 is not easy to lose or damage. The mounting cavity 112 is recessed on the front side of the base, that is, the mounting position of the storage bag 4 is close to the front part of the seat, which is convenient for users to use and access. The mounting cavity 112 is movably connected with a cover, which can be rotatable, reversible or detachable relative to the mounting cavity 112, so as to facilitate the user to store and take out the storage bag 4, and the added cover can protect the storage bag 4 from damage or pollution. In the use state, the overall appearance of the foldable seat is also more neat and complete.

[0065] Preferably, a fixing assembly is further included, and the storage bag 4 is connected with the mounting cavity 112 through the fixing assembly. The bottom of the storage bag 4 and the bottom of the mounting cavity 112 are connected and fixed through the fixing assembly. The bottom of the storage bag 4 refers to the position farthest from the opening of the storage bag 4, and the bottom of the mounting cavity 112 refers to the position farthest from the opening of the mounting cavity 112. This fixing assembly can ensure that the storage bag 4 is fixed in the mounting cavity 112, preventing the storage bag 4 from shaking or falling off during use, thereby improving the use stability and safety of the seat storage structure. The fixing assembly can adopt various forms, such as buckles, buckles or magnetic buckles, for tightly fixing the storage bag 4 in the mounting cavity 112.

[0066] Preferably, the fixing assembly comprises a pressing plate 6 and a fixing piece 7, the fixing piece 7 is sequentially connected with the mounting cavity 112 through the pressing plate 6 and the storage bag 4, so that the storage bag 4 is more stably fixed on the foldable seat and is not easy to fall off or shake, and the fixing piece 7 can be a screw or a rivet; the thickness of the pressing plate 6 is much smaller than the depth of the mounting cavity 112, so as to ensure that the mounting cavity 112 has enough space for the storage bag 4 to be placed.

[0067] Optionally, as shown in Figure 9 、 Figure 10 、 Figure 11 , the first connecting part 321 is a triangular clamping groove, and the second connecting part 322 is a triangular clamping buckle. The detachable connection between the two adjacent building block type shells 32 is realized by the mutual connection or mutual separation of the triangular clamping groove on the upper building block type shell 32 and the triangular clamping buckle on the lower building block type shell 32.

[0068] The triangular clamping groove is located on the lower side of the building block type shell 32, and the triangular clamping buckle is located on the lower side of the building block type shell 32. When the triangular clamping groove and the triangular clamping buckle are connected with each other, the unfolding and fixing of the two adjacent building block type shells 32 can be realized. When it is necessary to separate the two adjacent building block type shells 32, the separation can be realized by taking out the triangular clamping buckle on the lower side from the triangular clamping groove on the upper side, which is convenient to disassemble and simple in structure.

[0069] Optionally, as shown in Figure 9 、 Figure 11 , the chair back assembly 3 further comprises a locking assembly, the locking assembly comprises a fixed block 37, the fixed block 37 is provided with a boss 371, the building block type shell 32 is provided with a hole 325 for movably mounting the boss 371, and the edge of the hole 325 is provided with the triangular clamping buckle. When the triangular clamping buckle is connected with the triangular clamping groove of the building block type shell 32 on the upper side and the boss 371 is inserted into the hole 325, the unfolding and locking of the two adjacent building block type shells 32 are realized.

[0070] When the boss 371 is inserted into the hole 325 to unfold and lock the two adjacent building block type shells 32, the elastic buckle on the building block type shell 32 can hold the bottom of the fixed block 37, so as to prevent the boss 371 from falling out of the hole 325 and ensure the firmness of the unfolding of the chair back. When assembling, the fixed block 37 is first mounted into the building block type shell 32, and then the boss 371 of the fixed block 37 is inserted into the hole 325 of the building block type shell 32, and the boss 371 extrudes the triangular clamping buckle, so as to realize the unfolding and fixing of the upper and lower building block type shells 32.

[0071] Optionally, as shown in Figure 9 、 Figure 11As shown, the fixing block 37 is further provided with a switch 372, and the building block shell 32 is exposed with an opening 326 corresponding to the switch 372, so that when the switch 372 is pressed to make the boss 371 move out of the hole 325, the adjacent two building block shells 32 can be folded.

[0072] The exposed opening 326 is convenient for the user to apply force on the switch 372 to press the fixing block 37 downward, so that the boss 371 can be pulled out of the hole 325, the triangular buckle and the triangular slot can be separated from each other, so that the adjacent two building block shells 32 can be separated from each other, and finally can be folded; the locking assembly further comprises a reset member, the two ends of the reset member are connected with the fixing block 37 and the building block shell 32 respectively, and the reset member is preferably a compression spring, under the action of the reset member, when the external force is removed, the boss 371 of the fixing block 37 can be pushed to re-insert into the hole 325, so that the triangular buckle and the triangular slot can be re-locked to realize the re-expansion and fixation of the adjacent two building block shells 32.

[0073] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications shall fall within the protection scope of the present disclosure.

Claims

1. A foldable child safety seat, characterized in that, The utility model provides a folding chair, which comprises a base assembly (1), a headrest assembly (2) and a backrest assembly (3), the headrest assembly (2) is foldably connected with the top end of the backrest assembly (3), and the backrest assembly (3) is movably connected with the base assembly (1); the backrest assembly (3) comprises movable connectors and a plurality of mutually detachably connected building block type housings (32), each of the building block type housings (32) is provided with a first connecting portion (321) and a second connecting portion (322), the first connecting portion (321) on the upper building block type housing (32) is connected with the second connecting portion (322) on the lower building block type housing (32) to fix the positions of adjacent two building block type housings (32) relative to each other, and adjacent two building block type housings (32) are further connected through the movable connectors; when the adjacent two building block type housings (32) are separated from each other, the backrest assembly (3) forms an unfolded portion (33) and a folded portion (34) after being foldably connected through the movable connectors, the unfolded portion (33) is connected with the headrest assembly (2), and the base assembly (1) comprises a base body (11), and the base body (11) is provided with a containing cavity (111) suitable for placing the folded portion (34).

2. The foldable child safety seat of claim 1, wherein, The base assembly (1) further comprises a rear cover (12) movably connected with the base body (11), when the folded portion (34) is placed in the containing cavity (111), the upper side of the rear cover (12) abuts against the lower side of the unfolded portion (33), and the front side of the rear cover (12) abuts against the rear side of the folded portion (34).

3. The foldable child safety seat of claim 2, wherein, The front lower end of the rear cover (12) is hingedly connected with the rear lower end of the base body (11).

4. The foldable child safety seat of claim 1, wherein, The headrest assembly (2) comprises a headrest body (21), a headrest wing (22) and a backrest wing (23), and the headrest wing (22) and the backrest wing (23) are hingedly connected with the headrest body (21).

5. The foldable child safety seat of claim 4, wherein, When the headrest assembly (2) is unfolded, a gap suitable for allowing a vehicle safety belt (5) to pass through is formed between the headrest wing (22) and the backrest wing (23), and a lock (24) for preventing the vehicle safety belt (5) from sliding out of the gap is arranged at the gap.

6. The foldable child safety seat of claim 1, wherein, When the headrest assembly (2) is folded, the headrest assembly (2) is arranged close to the base body (11) relative to the backrest assembly (3).

7. The foldable child safety seat of claim 1, wherein, The movable connectors are connecting belts (31), the connecting belts (31) vertically span all the building block type housings (32), each of the building block type housings (32) is connected with a pressing block (35), and the pressing block (35) is used for pressing the connecting belts (31) against the edges of the building block type housings (32).

8. The foldable child safety seat of claim 7, wherein, A plurality of through holes (311) are arranged on the connecting belts (31) at intervals, and each of the building block type housings (32) is provided with a cylinder (323) matched with the through holes (311).

9. The foldable child safety seat of claim 1, wherein, The movable connecting piece is a foldable piece (36) which is connected to one edge of the building block shell (32) and detachably connected to the edge of the adjacent building block shell (32).

10. The foldable child safety seat of claim 1, wherein, The storage bag (4) is wrapped outside the folded state seat when the base assembly (1), the backrest assembly (3) and the headrest assembly (2) are all folded.

11. The foldable child safety seat of any one of claims 1-10, wherein, The first connecting part (321) is a triangular slot, and the second connecting part (322) is a triangular buckle. The detachable connection between two adjacent building block shells (32) is realized by the mutual connection or separation of the triangular slot on the upper building block shell (32) and the triangular buckle on the lower building block shell (32).

12. The foldable child safety seat of claim 11, wherein, The backrest assembly (3) further comprises a locking assembly, which comprises a fixed block (37) provided with a boss (371), and the building block shell (32) is provided with a hole (325) for movably mounting the boss (371). The edge of the hole (325) is provided with the triangular buckle. When the triangular buckle is connected with the triangular slot of the upper building block shell (32) and the boss (371) is inserted into the hole (325), the adjacent two building block shells (32) are locked in an unfolded state.

13. The foldable child safety seat of claim 12, wherein, The fixed block (37) is further provided with a switch (372), and the building block shell (32) is exposed and provided with an opening (326) corresponding to the switch (372). When the switch (372) is pressed to move the boss (371) out of the hole (325), the adjacent two building block shells (32) are folded.

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