Child safety seat and seat thereof

Abstract

The invention relates to a child safety seat and a seat thereof. A seat body of the child safety seat is used for being installed on a base of the child safety seat, a joint piece is arranged on the upper portion of the seat body, and a top tying belt connected with the base is wound around the joint piece which is used for supporting the top tying belt.

Description

Technical Field

[0001] The invention relates to a child safety seat and the seat thereof. Background Art

[0002] A child safety seat can be installed on a vehicle seat for a child to sit on, which can effectively ensure the safety of the child. A typical child safety seat includes a base and a seat. The seat can be installed on the base facing forward or backward, and the seat forms a space for accommodating a child. The base can be connected to the vehicle seat through an ISOFIX connector or a vehicle seat belt to fix the child safety seat on the vehicle seat.

[0003] In order to prevent the seat from tipping forward and causing harm to the child in the event of an accident, the child safety seat in the related technology can also be equipped with a top strap, one end of which is connected to only one of the base and the seat of the child safety seat, and the other end is wound from the top of the vehicle seat to the rear of the vehicle seat and connected to the anchor point behind the vehicle seat. When the child safety seat is impacted, a large relative movement will occur between the seat and the base, causing discomfort to the child and posing a safety risk. Summary of the invention

[0004] In one aspect, the present invention provides a seat of a child safety seat, which is used to be installed on a base of the child safety seat, and an engaging member is provided on the upper portion of the seat, and the engaging member is used for a top strap connected to the base to pass around and support the top strap.

[0005] Furthermore, the engaging member is located at a middle position of an outer side surface of the seat.

[0006] Further, the joint itself defines a channel for the top strap to pass through, or the joint cooperates with the seat to define a channel for the top strap to pass through.

[0007] Furthermore, the seat includes a main shell, which includes a seat area and a backrest area, a fixing rod is installed on the inner side of the backrest area, and the backrest area is provided with a through hole passing through the inner and outer sides thereof; the connecting piece includes a connecting rod and connecting arms extending from both ends of the connecting rod, the connecting rod is used to support the top strap, and the connecting arm passes through the through hole and is connected to the fixing rod.

[0008] Furthermore, at least two clip seats are provided on the inner side surface of the backrest area, and the at least two clip seats are spaced apart in the left-right direction of the seat, each of the clip seats is provided with a slot, and the fixing rod is clipped with the slot; and / or the fixing rod is connected to the backrest area by at least one fastener.

[0009] Furthermore, at least one spacer sleeve is sleeved on the fixing rod, and each of the spacer sleeves is located between two adjacent clamping seats.

[0010] Furthermore, each of the connecting arms comprises an arm body and a plate; the arm body is connected to the engaging rod; and the plate is sleeved on the fixing rod and then passes through the through hole to be connected to the arm body.

[0011] Furthermore, the seat also includes an outer shell installed on the outer side of the main shell, the upper edge of the outer shell is provided with a notch that cooperates with the arm body, and the connection point between the arm body and the plate is located between the main shell and the outer shell.

[0012] Furthermore, the seat comprises a plastic shell, and the engaging member is integrally formed with the plastic shell.

[0013] Furthermore, the joint member includes a belt, and both ends of the belt are respectively connected to the seat.

[0014] Furthermore, the joint is movably connected to the seat, and the joint has a use position unfolded from the seat and a storage position attached to the seat.

[0015] Furthermore, the outer side surface of the seat is provided with a groove for accommodating the joint piece; and / or the joint piece is pivotally connected to the seat.

[0016] Furthermore, the engaging member is connected to the seat via a pivot, and the seat is provided with a first retaining mechanism and a second retaining mechanism, wherein the first retaining mechanism is used to retain the engaging member in the use position, and the second retaining mechanism is used to retain the engaging member in the storage position.

[0017] In another aspect, the present invention provides a child safety seat, which comprises a base, a top strap and the above-mentioned seat.

[0018] Furthermore, the seat is mounted forward on the base, the first end of the top strap is connected to the base, the middle part of the top strap is supported by the joint, and the second end of the top strap is provided with a connecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] Figure 1 Schematically showing a rear perspective view of a child safety seat provided according to some embodiments of the present invention, wherein a seat of the child safety seat provided according to some embodiments of the present invention is shown;

[0021] Figure 2 Schematically shows Figure 1 a side perspective view of the child safety seat shown with the top tether omitted;

[0022] Figure 3 Shows Figure 2 A1 in the enlarged view;

[0023] Figure 4 Schematically shows Figure 1 Partial exploded view of the seat in the;

[0024] Figure 5 Shows Figure 4 A2 in the enlarged view;

[0025] Figure 6 Schematically shows Figure 1 Another rear perspective view of the child safety seat is shown, with the outer shell and top tether omitted;

[0026] Figure 7 Shows Figure 6 A3 in the enlarged view;

[0027] Figure 8 Shows Figure 4 An assembly diagram of the joint and the fixing rod;

[0028] Fig. 9 Schematically showing a rear perspective view of a child safety seat provided according to some embodiments of the present invention, wherein a seat provided according to some variant embodiments of the present invention is shown;

[0029] Fig.10 Schematically showing a rear perspective view of a child safety seat provided according to some embodiments of the present invention, wherein a seat provided according to some variant embodiments of the present invention is shown;

[0030] Fig.11 Schematically showing a rear perspective view of a child safety seat provided according to some embodiments of the present invention, wherein a seat provided according to some variant embodiments of the present invention is shown;

[0031] Fig.12 Shows Fig.11 A4 enlargement of the figure; and

[0032] Fig.13 Schematically shows Fig.11 A three-dimensional view of the joint being assembled on a pivot. DETAILED DESCRIPTION

[0033] See also Figures 1 to 3, shows the structure of a child safety seat 1000 provided according to some embodiments of the present invention, the child safety seat 1000 comprises a base 200 and a seat 100 (hereinafter referred to as the seat 100) of a child safety seat provided according to some embodiments of the present invention. The seat 100 will be described together with the child safety seat 1000.

[0034] See also Figure 1 and Figure 2 The seat 100 may include a shell 1 made of plastic, and a foam plastic joined to the shell 1, wherein the shell 1 and the foam plastic constitute a space with a cushioning property for accommodating a child. The area of ​​the seat 100 that is in contact with the child may also be covered with a seat cloth, which may include a sponge interlayer. Figure 4 and Figure 5 In some embodiments, the shell 1 of the seat 100 may include a main shell 11 and an outer shell 12, and the main shell 11 may include a seat area 111 and a backrest area 112 that are integrally injection molded. The seat area 111 is used to support the child's buttocks, and the backrest area 112 is used to support the child's back. Foam plastic can be joined to the side wings on the left and right sides of the seat area 111 and the backrest area 112. A headrest 13 can also be provided on the backrest area 112, and the height of the headrest 13 can be adjusted to adapt to the child's riding height. The outer shell 12 is, for example, attached to the outside of the main shell 11 (also referred to as the back of the main shell 11), so that the shell 1 of the seat 100 has a neat appearance. Of course, in some alternative embodiments, the outer shell 12 may not be provided, and the main shell 11 itself has a neat appearance.

[0035] The base 200 can be placed on a vehicle seat (not shown) and provide a stable support for the seat 100. The base 200 may include a base portion 21 and a top portion 22 extending upward from the rear end of the base portion 21. The base portion 21 is used to be placed on the seat body of the vehicle seat. The top portion 22 is used to abut against the backrest of the vehicle seat to prevent the child safety seat 1000 from tipping backward when impacted. In some embodiments, the rear end of the base portion 21 may be provided with an ISOFIX connector, which is connected to the plug interface of the vehicle seat to fix the base 200 to the vehicle seat. Alternatively, in some embodiments, the left and right sides of the base 200 may be provided with, for example, hook-shaped connectors 222, and the vehicle safety belt may be passed around the connector 222 to fix the base 200 to the vehicle seat.

[0036] The seat 100 is, for example, detachably or rotatably mounted on the base portion 91. The seat 100 can be mounted on the base 200 in a forward or rearward direction. When the seat 100 is mounted on the base 200 in a forward direction, the sight of the child sitting in the seat 100 is toward the front of the vehicle. When the seat 100 is mounted on the base 200 in a rearward direction, the sight of the child sitting in the seat 100 is toward the rear of the vehicle.

[0037] It should be noted that the directional terms such as "front", "rear", "left", and "right" of the seat 100 in the embodiment of the present invention are based on the "front", "rear", "left", and "right" directions of the child sitting in the seat 100, and the directional terms such as "front", "rear", "left", and "right" of the base 200 refer to the "front", "rear", "left", and "right" directions of the vehicle when the base 200 is installed on the vehicle seat. These directional terms are only used to make the description of the embodiment of the present invention clearer and are not used to improperly limit the scope of protection of the present invention. Figure 1 The seat 100 is mounted forward on the base 200, and the front, rear, left, and right directions of the seat 100 are consistent with the front, rear, left, and right directions of the base 200. Figure 1 The arrows F and B schematically indicate the "front" and "rear" directions of the base 200, and the arrows L and R schematically indicate the "left" and "right" directions of the base 200. It can be understood that when the seat 100 is mounted on the base 200 in the rearward direction, the front, rear, left, and right directions of the seat 100 are opposite to those of the base 200.

[0038] Continue to see Figure 1 , a connecting handle 23 is provided at the upper part of the top supporting part 22 of the base 200, and the connecting handle 23 can extend upward from the upper edge of the top supporting part 22. The connecting handle 23 is used to connect with the first end 41 of the top tether 4, and the first end 41 of the top tether 4 forms a loop sleeved on the connecting handle 23 by sewing, for example. A joint 3 is provided at the upper part of the seat 100, and the joint 3 is used for the top tether 4 to pass around and to support the middle part of the top tether 4. A connecting member 6 is provided at the second end 42 of the top tether 4, and the connecting member 6 can be connected to an anchor point in the vehicle (the anchor point is generally located behind the vehicle seat) to further fix the child safety seat 1000 to the vehicle seat. The connecting member 6 can be provided with a hook body or any other suitable structure, as long as it can be connected to the anchor point. In some embodiments, the top tether 4 can be provided with an adjuster 43, and the adjuster 43 can be used to adjust the effective use length of the top tether 4 to make the top tether 4 tight. In addition, in some embodiments, a positioning structure 221 may be provided on the base 200. When the child safety seat 1000 is not in use (for example, in a transport state), the connector 6 may be connected to the positioning structure 221 to prevent the second end 42 of the top strap 4 from shaking randomly.

[0039] When the child safety seat 1000 is fixed to the vehicle seat and the seat 100 is installed forward on the base 200, if the vehicle is impacted and suddenly decelerates, the tensioned top tether 4 can act on the seat 100 and the base 200 at the same time, that is, the seat 100 and the base 200 are simultaneously pulled and limited by the top tether 4. In this way, on the one hand, a large relative movement between the seat 100 and the base 200 is effectively avoided, and on the other hand, the child safety seat 1000 is effectively prevented from tipping forward as a whole under the action of inertia force, so as to reduce the horizontal displacement of the child's head, thereby improving the riding safety and comfort of the child safety seat 1000 and providing better protection for the child.

[0040] See also Figure 1 In some embodiments, the connecting handle 23 is located at the top middle position of the top support portion 22. Accordingly, the joint member 3 can be configured and located at the middle position of the outer side surface (also referred to as the back side of the seat 100) of the seat 100. The joint member 3 is located above the connecting handle 23. In some embodiments, the joint member 3 can be located at the upper part of the back side of the seat 100, for example, near the upper edge of the seat 100.

[0041] Continue to see Figure 1 In some embodiments, the joint member 3 cooperates with the seat 100 to define a channel 30 for the top strap 4 to pass through, or, in some embodiments, the joint member 3 itself can define a channel 30 for the top strap 4 to pass through. The channel 30 can limit the movement range of the top strap 4 (especially the movement range in the left and right directions) to prevent the top strap 4 from accidentally detaching from the joint member 3 during use.

[0042] Figures 1 to 8 An exemplary embodiment of the joint member 3 is shown. The joint member 3 includes a joint rod 31 and connecting arms 32 extending from both ends of the joint rod 31, wherein the joint rod 31 is used to support the top tether 4, and the connecting arms 32 are used to connect with the shell 1 of the seat 100. The joint rod 31, the connecting arms 32 and the shell 1 of the seat 100 cooperate to define a channel 30.

[0043] See also Figure 3 , Figures 5 to 7 , shows an exemplary connection mode of the joint 3 and the seat 100. Specifically, the inner side 1121 of the backrest area 112 (more specifically, the inner side of the main shell 11 facing the child) is installed with a fixing rod 15, and the backrest area 112 is provided with a through hole 1120 that passes through the inner side 1121 and the outer side 1122 thereof. The connecting arm 32 passes through the through hole 1120 and is connected to the fixing rod 15.

[0044] See also Figure 5In order to facilitate the fixing of the fixing rod 15, the inner side surface 1121 of the backrest area 112 is provided with three clamping seats 1123, for example, and the three clamping seats 1123 are arranged at intervals in the left and right directions of the seat 100. Each clamping seat 1123 can be provided with a clamping groove 11230, and the fixing rod 15 is clamped with the clamping groove 11230. In addition, the fixing rod 15 can also be connected to the clamping seat 1123 of the backrest area 112 by a fastener 151 (such as a screw). Figure 4 In some embodiments, a hole 150 is provided in the middle of the fixing rod 15 , for example, and a hole 11231 is provided in the middle of the three fixing seats 1123 , for example, and the fastener 151 passes through the hole 150 and is connected to the hole 11231 , so that the fixing rod 15 is reliably fixed on the backrest area 112 .

[0045] It is understood that in some alternative embodiments, the number of the clamping seats 1123 is not limited to three, and it can be one, two or more than three. When the number of the clamping seats 1123 is greater than one, at least one spacing sleeve 152 can be sleeved on the fixing rod 15, and each spacing sleeve 152 is located between two adjacent clamping seats 1123. The length of each spacing sleeve 152 can be equal to the spacing between two adjacent clamping seats 1123. In this way, the fast positioning of the fixing rod 15 can be achieved by clamping the spacing sleeve 152 between two adjacent clamping seats 1123, so that the hole 150 and the hole 11231 are quickly aligned. In addition, in some alternative embodiments, the number and setting position of the fastener 151 can also have a variety of variations, and are not limited to the above examples, as long as it can fix the fixing rod 15 and the backrest area 112 together. For example, the fastener 151 can be connected to any clamping seat 1123. Furthermore, in some alternative embodiments, the inner side surface 1121 of the backrest area 112 may not be provided with the snap-fit ​​seat 1123 , and the fixing member 15 may be directly connected to the backrest area 112 via at least one fastener 151 .

[0046] See also Figure 3 , Figure 4 and Figure 8 In some embodiments, each connecting arm 32 includes, for example, an arm body 321 and a plate 322. The arm body 321 is connected to the connecting rod 31. The plate 322 is provided with a hole 3220, and the plate 322 is sleeved on the fixing rod 15 through the hole 3220, so that the connecting member 3 is connected to the fixing rod 15.

[0047] Combine the following Figure 4 and Figure 5The connection process between the connecting arm 32 and the fixing rod 15 is described below. The spacer sleeve 152 is pre-installed on the fixing rod 15, and then the plate 322 is sleeved on the fixing rod 15. The fixing rod 15 is then installed in the slot 11230 of the clamping seat 1123, and the plate 322 then passes through the through hole 1120. After that, the fastener 151 passes through the hole 150 and is connected to the hole 11231, and the fixing rod 15 is reliably fixed on the inner side 1121 of the backrest area 112. Finally, each arm body 321 is connected to the corresponding plate 322 by, for example, welding.

[0048] In some embodiments, after the connecting arm 32 and the fixing rod 15 are connected together, the outer shell 12 is installed on the main shell 11. Figure 5 As can be seen in the figure, the upper edge of the outer shell 12 can be provided with a notch 120 that cooperates with the arm 321 to prevent the arm 321 from interfering with the installation of the outer shell 12. In some embodiments, the connection point of the arm 321 and the plate 322 is located between the main shell 11 and the outer shell 12 to give the seat 100 a neat appearance.

[0049] The fixing rod 15, the engaging rod 31, the connecting arm 321 and the connecting handle 23 can be solid rods or pipes, and their cross-sectional shapes can be any suitable shapes such as circular, square, elliptical, etc.

[0050] Fig. 9 Another exemplary embodiment of the coupling member 3 is shown. The coupling member 3, for example, includes a coupling rod 31 and connecting arms 32 extending from both ends of the coupling rod 31. The coupling rod 31 is used to support the top tether 4, and the connecting arm 32 is used to connect to the shell 1 of the seat 100. More specifically, the coupling member 3 is, for example, an integral structure with the main shell 11 or the outer shell 12 of the shell 1. In some embodiments, the coupling member 3 is integrated with the main shell 11 or the outer shell 12, for example, by injection molding. The coupling member 3 cooperates with the seat 100 to define a channel 30 for the top tether 4 to pass through.

[0051] Since the coupling member 3 and the shell of the seat 100 are an integral structure, the assembly steps of the coupling member 3 and the seat 100 are omitted, which is conducive to improving the production efficiency of the child safety seat 1000. In addition, the connection strength between the integral coupling member 3 and the seat 100 is high, and the coupling member 3 is not easy to fall off the seat 100. In combination with the foregoing, it can be seen that when the connecting member 6 located at the second end 42 of the top strap 4 passes through the channel 30 and is connected to the anchor point in the vehicle, the child safety seat 1000 is better fixed. The top strap 4 can effectively prevent the child safety seat 1000 from tipping forward as a whole under the action of inertia force, so as to reduce the horizontal displacement of the child's head, thereby improving the riding safety and comfort of the child safety seat 1000 and providing better protection for the child.

[0052] Fig.10 Another exemplary embodiment of the coupling member 3 is shown. The coupling member 3 includes, for example, a belt, such as a webbing, and both ends of the belt are respectively connected to the seat 100. More specifically, for example, two holes 303 are provided on the shell 1 (such as the outer shell 12), and after the two ends of the belt extend forward from the outer side of the shell 1 to the inner side of the shell 1 through the holes 303, respectively, the two ends of the belt are limited and cannot be pulled out backward through the holes 303. The belt cooperates with the seat 100 to define a channel 30 for the top tether 4 to pass through. In some embodiments, the two ends of the belt can be respectively provided with limiters such as Japanese buckles and bow ties, and the size of the limiters is larger than the size of the holes 303 to prevent the two ends of the belt from being pulled out backward from the holes 303.

[0053] As can be seen from the foregoing, when the connector 6 at the second end 42 of the top tether 4 passes through the channel 30 and is connected to the anchor point in the vehicle, the child safety seat 1000 is better fixed. The top tether 4 can effectively prevent the child safety seat 1000 from tipping forward as a whole under the action of inertia force, so as to reduce the horizontal displacement of the child's head, thereby improving the riding safety and comfort of the child safety seat 1000 and providing better protection for the child.

[0054] Figures 11 to 13 1 shows another exemplary embodiment of the joint member 3. The joint member 3, for example, includes a joint rod 31 and connecting arms 32 extending from both ends of the joint rod 31. The joint rod 31 is used to support the top tether 4, and the connecting arm 32 is used to be movably connected to the shell 1 of the seat 100, such as pivotally connected. The joint member 3 has a use position unfolded from the seat 100 and a storage position attached to the seat 100.

[0055] When the child safety seat 1000 is in use, the joint 3 switches to Fig.11 and Fig.12 The engaging member 3 is in the use position shown in the figure to withstand the tension of the top tether 4. The engaging member 3 cooperates with the seat 100 to define a channel 30 for the top tether 4 to pass through. When the engaging member 3 is not needed, the engaging member 3 can be switched to the storage position to reduce the size of the seat 100. When the child safety seat 1000 is installed on the vehicle seat, the engaging member 3 is not easy to interfere with the rotation of the seat 100 after switching to the storage position, and the seat 100 can be easily switched from the forward installation state to the rearward installation state. When the child safety seat 1000 is removed from the vehicle seat, the engaging member 3 can be switched to the storage position to help reduce the packaging volume and transportation cost of the seat 100.

[0056] See also Fig.12In some embodiments, the outer side of the shell 1 of the seat 100 may be provided with a groove 101. When the joint member 3 is switched to the storage position, the joint member 3 may be stored in the groove 101 to be protected, and the seat 100 has a neat appearance. In some embodiments, the width of the groove 101 may be substantially the same as that of the joint member 3 so as not to produce a large gap.

[0057] In some embodiments, the seat 100 may also be provided with a first retaining mechanism 51 and a second retaining mechanism 52, wherein the first retaining mechanism 51 is used to retain the engaging member 3 in the use position, and the second retaining mechanism 52 is used to retain the engaging member 3 in the storage position.

[0058] There are many ways to implement the first holding mechanism 51 and the second holding mechanism 52. Fig.12 and Fig.13 FIG. 4 shows an exemplary embodiment of the first holding mechanism 51 and the second holding mechanism 52 .

[0059] See also Fig.13 The connecting arm 32 of the joint member 3 is connected to the seat 100, for example, via a pivot 18. In some embodiments, the pivot 18 can be fixed to a support (not shown) in the seat 100. A sleeve 33 is provided at the end of the connecting arm 32, and the sleeve 33 is pivotally connected to the pivot 18. The first retaining mechanism 51 includes, for example, a torsion spring, which can be sleeved on the pivot 18 and connected to the joint member 3 and the seat 100, respectively. Fig.13 In some embodiments, the sleeve 33 of the joint member 3 can be connected to one spring arm 511 of the torsion spring through the column 34, and the other spring arm 512 of the torsion spring can be connected to any suitable structure in the seat 100. The torsion spring keeps the joint member 3 in the use position.

[0060] When the engaging member 3 needs to be switched to the storage position, the engaging member 3 is driven to pivot to the storage position. In some embodiments, the second retaining structure 52 includes, for example, a snap-fitting protrusion disposed at the slot 101. After the engaging member 3 passes over the snap-fitting protrusion and is received in the slot 101, the snap-fitting protrusion restricts the engaging member 3 from rotating to the use position.

[0061] See also Fig.12In some embodiments, the outer side surface of the shell 1 of the seat 100 may also be provided with a recess 102 that communicates with the groove 101, and the user can easily pull the coupling member 3 out of the groove 101 at the recess 102 to switch the coupling member 3 to the use position. When the coupling member 3 is in the use position, it can be seen from the foregoing that when the connecting member 6 at the second end 42 of the top strap 4 passes through the channel 30 and connects to the anchor point in the vehicle, the child safety seat 1000 is better fixed. The top strap 4 can effectively prevent the child safety seat 1000 from tipping forward as a whole under the action of inertia force, so as to reduce the horizontal displacement of the child's head, thereby improving the riding safety and comfort of the child safety seat 1000 and providing better protection for the child.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not 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. The above-described embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A seat for a child safety seat, used to be installed on a base of a child safety seat, characterized in that: A joint piece is provided on the upper part of the seat, through which a top strap connected to the base is passed and which is used to support the top strap.

2. The child safety seat according to claim 1, characterized in that: The engaging member is located at a middle position of the outer side surface of the seat.

3. The child safety seat according to claim 1, characterized in that: The joint itself defines a channel for the top strap to pass through, or the joint cooperates with the seat to define a channel for the top strap to pass through.

4. The child safety seat according to any one of claims 1 to 3, characterized in that: The seat comprises a main shell, the main shell comprises a seat area and a backrest area, a fixing rod is installed on the inner side of the backrest area, and the backrest area is provided with a through hole penetrating the inner side and the outer side thereof; The engaging member comprises an engaging rod and connecting arms extending from two ends of the engaging rod, wherein the engaging rod is used to support the top strap, and the connecting arms pass through the through hole and are connected to the fixing rod.

5. The child safety seat according to claim 4, characterized in that: At least two clamping seats are arranged on the inner side of the backrest area, and the at least two clamping seats are arranged at intervals in the left and right directions of the seat, and each of the clamping seats is provided with a clamping slot, and the fixing rod is clamped with the clamping slot; And / or, the fixing rod is connected to the backrest area via at least one fastener.

6. The child safety seat according to claim 5, characterized in that: At least one spacer sleeve is sleeved on the fixing rod, and each of the spacer sleeves is located between two adjacent clamping seats.

7. The child safety seat according to claim 4, characterized in that: Each of the connecting arms comprises an arm body and a plate; the arm body is connected to the engaging rod; and the plate is sleeved on the fixing rod and then passes through the through hole to be connected to the arm body.

8. The child safety seat according to claim 7, characterized in that: The seat also includes an outer shell installed on the outer side of the main shell, the upper edge of the outer shell is provided with a notch that matches the arm body, and the connection point between the arm body and the plate is located between the main shell and the outer shell.

9. The child safety seat according to any one of claims 1 to 3, characterized in that: The seat comprises a plastic shell, and the joint piece is integrally formed with the plastic shell.

10. The child safety seat according to any one of claims 1 to 3, characterized in that: The joint member comprises a belt, and both ends of the belt are respectively connected to the seat.

11. The child safety seat according to any one of claims 1 to 3, characterized in that: The joint piece is movably connected to the seat, and has a use position unfolded from the seat and a storage position attached to the seat.

12. The child safety seat according to claim 11, characterized in that: The outer side surface of the seat is provided with a groove for receiving the joint member; And / or, the engaging member is pivotally connected to the seat.

13. The child safety seat according to claim 11, characterized in that: The engaging member is connected to the seat via a pivot, and the seat is provided with a first retaining mechanism and a second retaining mechanism, wherein the first retaining mechanism is used to retain the engaging member in the use position, and the second retaining mechanism is used to retain the engaging member in the storage position.

14. A child safety seat, characterized in that: A seat comprising a base, a top strap and a child safety seat according to any one of claims 1 to 13.

15. The child safety seat according to claim 14, characterized in that: The seat is installed forward on the base, the first end of the top strap is connected to the base, the middle part of the top strap is supported by the joint, and the second end of the top strap is provided with a connecting piece.

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