Safety seat

Abstract

The application discloses a safety seat, comprising a base, a seat, an adjusting assembly and a backrest, the base is provided with a connecting boss extending in the front-rear direction and provided with a plurality of clamping holes in the front-rear direction; the seat is provided with a connecting groove matched with the connecting boss, so that the seat is adjustably arranged on the base; the adjusting assembly is arranged on the seat, and the clamping piece of the adjusting assembly is selectively clamped into any clamping hole to fix the seat; the backrest is detachably connected to the seat through a backrest pipe, the connecting boss is provided with a limiting groove, the backrest pipe is provided with a blocking piece, and the seat is provided with a limiting piece selectively extending into the limiting groove; when the backrest is removed, the clamping piece is clamped in the last clamping hole, and the limiting groove is matched with the limiting piece to lock the seat; when the backrest is installed on the seat, at least part of the blocking piece is located between the limiting groove and the limiting piece to release the locking of the seat, so that the application range is improved, and the safety and reliability are improved.

Description

Technical Field

[0001] This application relates to the field of child safety seat technology, and in particular to a child safety seat. Background Technology

[0002] Child safety seats are installed in vehicles to carry children, effectively improving their safety while traveling in cars.

[0003] In related technologies, children of different ages have significant height differences. By setting a detachable backrest, the car seat can be adapted to children of different ages. However, the seat and base have multiple adjustment positions, and the seat and base have a high degree of freedom. After removing the backrest, the high degree of freedom of the seat will reduce the reliability and safety of the car seat. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. Therefore, one objective of this application is to provide a safety seat with higher reliability and stability.

[0005] A safety seat according to a first aspect of this application includes: a base, a seat, an adjustment assembly, and a backrest. The base has a connecting boss extending in a front-rear direction and has multiple locking holes in the front-rear direction. The seat has a connecting groove that mates with the connecting boss, allowing the seat to be adjusted at an adjustable angle on the base. The adjustment assembly is disposed on the seat, and a locking member of the adjustment assembly can be selectively engaged into any of the locking holes to secure the seat. The backrest is detachably connected to the seat via a backrest tube. The connecting boss has a limiting groove, and the backrest tube has a blocking member. The seat has a limiting member that can be selectively inserted into the limiting groove. When the backrest is removed, the locking member engages with the locking hole at its rear end, and the limiting groove and the limiting member cooperate to lock the seat. When the backrest is installed on the seat, at least a portion of the blocking member is located between the limiting groove and the limiting member to release the locking of the seat.

[0006] According to the embodiments of this application, the safety seat, by setting a limiting member, a limiting groove, and a blocking member, is in the first position when the backrest is removed, and the limiting member cooperates with the limiting groove to switch the seat to the locked state. When the backrest is installed on the seat, the blocking member blocks the limiting member to switch the seat to the unlocked state. While allowing the seat to be adjusted between multiple positions to meet the riding needs of small children, when the backrest is removed to meet the riding needs of large children, the angle between the seat and the base, and the distance between the rear end of the seat and the vehicle backrest are more reasonable, which can effectively improve riding comfort and effectively restrict the seat's degree of freedom, thereby improving the reliability and safety of the safety seat.

[0007] Furthermore, the limiting component includes a limiting block, a connecting arm, and a first elastic member. One end of the connecting arm is pivotally connected to the seat, the limiting block is disposed at the other end of the connecting arm, and the first elastic member elastically pushes against the connecting arm and is adapted to push the limiting block toward the limiting groove. Thus, by providing the connecting arm, connecting block, and first elastic member, the seat can automatically switch to a locked state after the backrest is removed, improving the automation level of the limiting component and enabling it to work in conjunction with the backrest, thereby enhancing the user experience.

[0008] According to some embodiments of this application, the adjustment assembly includes: an adjustment handle, a linkage, and a locking member. The adjustment handle is movably disposed at the front end of the seat. The linkage is connected to the adjustment handle and is used to drive the locking member to move toward or away from the locking hole. Therefore, by making the adjustment handle and the locking member dynamically connected via the linkage, the movement directions of the adjustment handle and the locking member can be different, which can reduce the space occupied by the adjustment assembly, thereby reducing the difficulty of arranging the adjustment assembly within the seat, improving the convenience of arrangement, and simultaneously improving the ease of operation of the adjustment assembly.

[0009] Furthermore, the linkage includes a first arm, a second arm, and a third arm that extend away from each other and form an angle. The first arm is pivotally connected to the seat, the second arm is hinged to the adjustment handle, and the third arm is hinged to the locking member. By pulling the adjustment handle, the second arm can be driven, generating a rotational torque that drives the first arm to pivot relative to the seat. At the same time, the third arm pulls the locking member away from the locking hole, which can improve the adjustment convenience of the adjustment component. The hinged connection between the second arm and the adjustment handle, and the hinged connection between the third arm and the locking member, can avoid mechanical dead points during the movement of the adjustment component, thus improving the stability and reliability of the movement.

[0010] Furthermore, the seat is provided with a guide bracket, and the engaging member is movably disposed within the guide bracket. The guide bracket is used to guide the engaging member so that the engaging member is guided and adjusted by the guide assembly during the process of the engaging member extending into the locking hole, ensuring that the engaging member and the locking hole are at least partially aligned, thereby improving the engaging accuracy.

[0011] In some embodiments, the connecting boss and the connecting groove are at least two that are arranged opposite each other in the left-right direction, the number of the linkage and the engaging member is the same as the number of the connecting boss, and the adjusting handle includes: a handle body and a plurality of connecting rods connected to the handle body, the number of the connecting rods is the same as the number of the connecting boss, and the plurality of the connecting rods are used to synchronously drive the plurality of the linkages to move.

[0012] In this way, by setting multiple connecting bosses and connecting grooves to cooperate, the stability and reliability of the fit between the seat and the base can be improved. The locking and linkage parts corresponding to each connecting boss can be controlled by an adjustment handle, which can reduce the difficulty of adjusting the angle of the seat relative to the base, improve the convenience of adjustment, and the synchronization between multiple connecting bosses and connecting grooves is better, which can avoid the seat being misaligned relative to the base and improve the user experience.

[0013] Furthermore, the seat is provided with a guide portion for guiding the connecting rod. There are multiple guide portions, which are spaced apart in the extension direction of the connecting rod, so as to guide the movement of the connecting rod through the guide portion, which can further improve the adjustment stability and reliability of the adjustment component.

[0014] Furthermore, the adjustment assembly also includes a second elastic element disposed on the connecting rod. The second elastic element is used to drive the adjustment handle to reset and to stably engage the locking member with the locking hole. After the adjustment handle is pulled to move the locking member out of the locking hole, the elastic reset force of the tension spring can drive the locking member to reset and engage with the locking hole. Under the premise of achieving automatic reset of the locking member, the stability and reliability of the locking member engaging with the locking hole in the locking hole are also higher, and the automatic reset of the adjustment handle can also be achieved.

[0015] According to some embodiments of this application, one end of the connecting groove is provided with a limiting baffle for limiting the position of the boss.

[0016] Furthermore, the base is provided with a limiting rib corresponding to the connecting boss, and the seat is provided with a stop part that cooperates with the limiting rib on the end of the connecting groove away from the limiting baffle.

[0017] This prevents the connecting boss from coming out of the connecting groove. In the first and final positions, the limiting baffle or limiting rib cooperates with the stop part to achieve limiting, improving the positioning accuracy of the seat and making the seat more stable and reliable on the base, thereby improving the safety of the child safety seat.

[0018] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of a child safety seat according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram illustrating the combination of the seat, backrest, and base according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the cooperation between the seat and the base according to an embodiment of this application;

[0023] Figure 4 yes Figure 3 A magnified view of a portion of region A in the middle;

[0024] Figure 5 This is a schematic diagram of the base according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of a seat according to an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of an adjustment handle according to an embodiment of this application.

[0027] Figure label:

[0028] Child seat 100

[0029] Base 10, connecting boss 11, locking hole 12, limiting groove 13, limiting rib 14

[0030] Seat 20, connecting groove 21, limiting member 22, limiting block 221, connecting arm 222, first elastic member 223, guide bracket 23, limiting baffle 24, stop part 25, guide part 26.

[0031] Adjustment assembly 30, adjustment handle 31, handle body 311, connecting rod 312, second elastic element 313, linkage element 32, first arm 321, second arm 322, third arm 323, locking element 33.

[0032] Backrest 40, backrest pipe 41, blocking component 42. Detailed Implementation

[0033] The embodiments of this application 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 application, and should not be construed as limiting this application.

[0034] The following is for reference. Figures 1-7 A safety seat 100 according to an embodiment of this application is described.

[0035] like Figure 1 As shown, the safety seat 100 according to the first aspect embodiment of this application includes: a base 10, a seat 20, an adjustment assembly 30, and a backrest 40.

[0036] The base 10 is provided with a connecting boss 11 (see...) Figure 5 The connecting boss 11 extends in the front-to-back direction and has multiple locking holes 12 in the front-to-back direction; the seat 20 has a connecting groove 21 that mates with the connecting boss 11 (see...). Figure 6 The connecting boss 11 extends into the connecting groove 21 and can slide within the connecting groove 21, so that the seat 20 is adjustablely set on the base 10. The adjustment component 30 is set on the seat 20, and the locking member 33 of the adjustment component 30 can be selectively locked into any locking hole 12 to fix the seat 20. The connecting groove 21 is provided with a clearance hole to avoid the locking member 33, so that the seat 20 is fixed relative to the base 10, preventing the seat 20 from sliding and improving the stability and reliability of the fixation. At the same time, each locking hole 12 can correspond to a position of the seat 20. In different positions, the angle between the seat 20 and the base 10 is different, which can adapt to different sitting postures of children and improve the sitting comfort.

[0037] like Figure 2 and Figure 3 As shown, the backrest 40 is detachably connected to the seat 20 via the backrest tube 41. When the backrest 40 is set on the seat 20, the overall seating area of ​​the seat 20 is relatively small, which is suitable for young children. When older children or larger children are seated, the backrest 40 can be removed to increase the seating area and expand the applicability of the safety seat 100.

[0038] Furthermore, a limiting groove 13 is provided on the connecting boss 11, and a limiting member 22 that can be selectively inserted into the limiting groove 13 is provided on the seat 20. A blocking member 42 is provided on the backrest tube 41. When the backrest 40 is removed, the engaging member 33 engages with the locking hole 12 at the rear end, and the limiting groove 13 and the limiting member 22 cooperate to lock the seat 20. When the backrest 40 is installed on the seat 20, at least a portion of the blocking member 42 is located between the limiting groove 13 and the limiting member 22 to release the locking of the seat 20.

[0039] In other words, the seat 20 has a locked state and an unlocked state. In the unlocked state, the seat 20 can be adjusted between multiple positions defined by multiple locking holes 12 to select a position that meets the needs of small children. However, when large children are riding, the safety seat 100 with the backrest 40 installed cannot meet their needs. The backrest 40 is removed, and the corresponding seat 20 is switched to the locked state. At this time, the angle of the seat 20 relative to the base 10 cannot be adjusted, which can improve the safety and reliability of the seat 20.

[0040] Understandably, multiple locking holes 12 extend in the front-to-back direction. The position corresponding to the foremost locking hole 12 is the final position, and the position corresponding to the last locking hole 12 is the first position. The base 10 is installed on the vehicle seat 20, and there is a certain distance between the backrest 40 and the vehicle backrest. When the seat 20 is in the first, second, ..., or final position, removing the backrest 40 would result in an excessive distance between the rear end of the seat 20 and the vehicle backrest. The recline angle of the seat 20 would not be suitable for larger children, and the large gap would reduce the reliability and safety of the safety seat 100. Therefore, after removing the backrest 40, the seat 20 should be in the first position. At this position, the distance between the rear end of the seat 20 and the vehicle backrest is small, resulting in high safety and reliability. Furthermore, the angle between the seat 20 and the base 10 can meet the seating needs of larger children. If the angle between the seat 20 and the base 10 can still be adjusted, it will not only fail to meet the seating needs of larger children but also reduce seating safety.

[0041] For example: if there are three slots 12, the corresponding gear positions are from the first to the third gear position, with the third gear position being the final gear position. When the backrest 40 is installed on the seat 20, the blocking member 42 blocks the limiting member 22, and the seat 20 is in the unlocked state. The seat 20 can be adjusted between the first, second, and third gear positions relative to the base 10. When the seat 20 is in the first gear position, the backrest 40 can be removed, and the limiting member 22 simultaneously extends into the limiting groove 13 to switch the seat 20 to the locked state, ensuring that the seat 20 is in the first gear position. This ensures that the gap between the seat 20 and the vehicle backrest is reasonable, and the angle between the seat 20 and the base 10 meets the seating angle requirements, thereby improving seating safety, reliability, and comfort.

[0042] According to the embodiments of this application, the safety seat 100, by setting a limiting member 22, a limiting groove 13, and a blocking member 42, when the backrest 40 is removed, the seat 20 is in the first position, and the limiting member 22 cooperates with the limiting groove 13 to switch the seat 20 to the locked state. When the backrest 40 is installed on the seat 20, the blocking member 42 blocks the limiting member 22 to switch the seat 20 to the unlocked state. While allowing the seat 20 to be adjusted between multiple positions to meet the needs of small children, when the backrest 40 is removed to meet the needs of large children, the angle between the seat 20 and the base 10, and the distance between the rear end of the seat 20 and the vehicle backrest are more reasonable, which can effectively improve the riding comfort and effectively restrict the degree of freedom of the seat 20, thereby improving the reliability and safety of the safety seat 100.

[0043] like Figure 3 and Figure 4As shown, the limiting member 22 further includes a limiting block 221, a connecting arm 222 and a first elastic member 223. One end of the connecting arm 222 is pivotally connected to the seat 20, the limiting block 221 is disposed at the other end of the connecting arm 222, and the first elastic member 223 elastically pushes against the connecting arm 222 and is adapted to push the limiting block 221 toward the limiting groove 13.

[0044] Specifically, the limiting member 22 can be generally L-shaped, the connecting arm 222 is the long arm of the limiting member 22, and the limiting block 221 is the short arm of the limiting member 22. One end of the connecting arm 222 is pivotally connected to the seat 20, and the other end of the connecting arm 222 is connected to the limiting block 221. The first elastic member 223 can be constructed as a torsion spring and sleeved on the pivot end of the connecting arm 222; or the first elastic member 223 can be constructed as a linear spring and push against the side of the connecting arm 222 away from the limiting block 221, so that the elastic force of the first elastic member 223 drives the connecting arm 222 to swing, thereby causing the limiting block 221 to move toward or away from the limiting groove 13.

[0045] Furthermore, when the backrest 40 is placed on the seat 20, the limiting block 221 pushes against the blocking member 42 to prevent the limiting groove 13 from locking with the limiting block 221, thereby improving the stability and reliability of the seat 20 angle adjustment. After the backrest 40 is removed, the limiting block 221 automatically extends into the limiting groove 13 under the action of the first elastic member 223.

[0046] It is understood that the blocking member 42 can be constructed as a blocking plate and is provided on the backrest tube 41, while the limiting block 221 is provided with a guide slope. When the backrest 40 is assembled to the seat 20, at least a portion of the backrest tube 41 extends into the seat 20. The blocking member 42 is provided on the portion of the backrest tube 41 that extends into the seat 20 and is adapted to push against the guide slope of the limiting block 221 to push the limiting block 221 out of the limiting groove 13 and release the locking state of the seat 20.

[0047] Therefore, by setting up the connecting arm 222, the connecting block and the first elastic element 223, the seat 20 can be automatically switched to the locked state after the backrest is removed, which can improve the automation level of the limiting element 22, so that the limiting element 22 and the backrest 40 can be linked together, thus improving the user experience.

[0048] It should be noted that the structure of the limiting member 22 in this application embodiment is not limited to this. In some other embodiments, the limiting member 22 can be constructed as a slider, which is slidably disposed on the seat 20, and a limiting block 221 is disposed on the surface of the slider facing the limiting groove 13. The first elastic member 223 is pushed against the side of the slider away from the limiting groove 13.

[0049] like Figure 3 and Figure 7As shown, according to some embodiments of this application, the adjustment assembly 30 includes: an adjustment handle 31, a linkage member 32, and a locking member 33. The adjustment handle 31 is movably disposed at the front end of the seat 20. The linkage member 32 is connected to the adjustment handle 31 and is used to drive the locking member 33 to move toward or away from the locking hole 12.

[0050] Specifically, the adjustment handle 31 can be connected to the linkage 32 via a pull cable structure, a linkage structure, etc. The linkage 32 is mounted on the seat 20 and can be configured to pull or push the engaging member 33 away from the locking hole 12. When angle adjustment is required, the adjustment handle 31 is triggered (e.g., pulled) so that the engaging member 33 moves away from or toward the locking hole 12. When the engaging member 33 engages with the locking hole 12, the seat 20 is in a certain position. After the engaging member 33 moves out of the locking hole 12, the seat 20 can be adjusted between multiple positions.

[0051] Therefore, by making the adjustment handle 31 and the locking member 33 connected by the linkage member 32, the movement directions of the adjustment handle 31 and the locking member 33 can be different, which can reduce the space occupied by the adjustment component 30, reduce the difficulty of arranging the adjustment component 30 in the seat 20, improve the convenience of arrangement, and at the same time improve the ease of operation of the adjustment component 30.

[0052] For example, when the adjustment handle 31 is connected to the locking member 33 by a pull cable, the corresponding linkage member 32 can be constructed as a guide wheel, pulley or other structure to achieve power steering. When the adjustment handle 31 is connected to the locking member 33 by a linkage structure, the corresponding linkage member 32 can be constructed as a crank-slider, crank-connecting rod or other composite hinge to achieve power steering.

[0053] like Figure 4 As shown, in an embodiment where the linkage 32 is configured as a link 312, the linkage 32 may include a first arm 321, a second arm 322, and a third arm 323 that extend away from each other and have an included angle. The first arm 321 is pivotally connected to the seat 20, the second arm 322 is hinged to the adjustment handle 31, and the third arm 323 is hinged to the engaging member 33.

[0054] Therefore, pulling the adjustment handle 31 can drive the second arm 322, which generates a torque that drives the first arm 321 to pivot relative to the seat 20. At the same time, the third arm 323 pulls the locking piece 33 away from the locking hole 12, which can improve the adjustment convenience of the adjustment component 30. The second arm 322 and the adjustment handle 31, and the third arm 323 and the locking piece 33 are all hinged, which can avoid mechanical dead points during the movement of the adjustment component 30 and improve the stability and reliability of the movement.

[0055] exist Figure 3 and Figure 4In the embodiment shown, a guide bracket 23 is provided on the seat 20, and the engaging member 33 is movably disposed within the guide bracket 23. The guide bracket 23 is used to guide the engaging member 33.

[0056] It should be noted that during the movement of the linkage 32 pulling the engaging component 33, the engaging component 33 will swing. The movement of the engaging component 33 is not maintained on a single axis. Based on this, a guide bracket 23 is provided on the seat 20. The guide bracket 23 includes at least two guide plates. The distance between the two guide plates gradually narrows in the direction of the engaging hole 12 and the avoidance hole of the connecting groove 21 to avoid the engaging component 33, so as to form a guide slope. The guide slope guides and adjusts the engaging component 33 during the process of the engaging component 33 extending into the engaging hole 12, ensuring that the engaging component 33 is at least partially aligned with the engaging hole 12, so as to improve the engaging accuracy.

[0057] like Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, the connecting boss 11 and the connecting groove 21 are at least two that are arranged opposite each other in the left-right direction. The number of linkage members 32 and engaging members 33 is the same as the number of connecting bosses 11. The adjusting handle 31 includes: a handle body 311 and a plurality of connecting rods 312 connected to the handle body 311. The number of connecting rods 312 is the same as the number of connecting bosses 11, and the plurality of connecting rods 312 are used to synchronously drive the plurality of linkage members 32 to move.

[0058] In this way, by setting multiple connecting protrusions 11 to cooperate with connecting grooves 21, the stability and reliability of the fit between the seat 20 and the base 10 can be improved. The locking part 33 and linkage part 32 corresponding to each connecting protrusion 11 can be controlled by an adjustment handle 31, which can reduce the difficulty of adjusting the angle of the seat 20 relative to the base 10, improve the convenience of adjustment, and the synchronization between multiple connecting protrusions 11 and connecting grooves 21 is better, which can avoid the misalignment of the seat 20 relative to the base 10 and improve the user experience.

[0059] In some embodiments, the seat 20 is provided with a guide portion 26 for guiding the connecting rod 312. There are multiple guide portions 26, which are spaced apart in the extension direction of the connecting rod 312, so as to guide the movement of the connecting rod 312 through the guide portion 26, which can further improve the adjustment stability and reliability of the adjustment assembly 30.

[0060] like Figure 4 As shown, the adjustment assembly 30 further includes a second elastic element 313, which is disposed on the connecting rod 312. The second elastic element 313 is used to drive the adjustment handle 31 to reset and to make the locking member 33 stably locked in the locking hole.

[0061] Specifically, a receiving groove is provided on the free end of the connecting rod 312, and the second elastic element 313 is constructed as a tension spring and is disposed in the receiving groove. One end of the second elastic element 313 is connected to the connecting rod 312, and the other end of the second elastic element 313 is connected to the upper surface of the seat 20. After the adjustment handle 31 is pulled to move the engaging member 33 out of the locking hole 12, the elastic restoring force of the tension spring can drive the engaging member 33 to return to the locking hole 12. Under the premise of achieving automatic reset of the engaging member 33, the stability and reliability of the engaging member 33 in the locking hole 12 are also higher, and the adjustment handle 31 can be automatically reset at the same time.

[0062] According to some embodiments of this application, a limiting baffle 24 for limiting the boss is provided at one end of the connecting groove 21; a limiting rib 14 is provided on the base 10 corresponding to the connecting boss 11; and a stop part 25 that cooperates with the limiting rib 14 is provided on the end of the connecting groove 21 away from the limiting baffle 24.

[0063] In other words, a limiting baffle 24 is provided at one end of the connecting groove 21 in the front-back direction, and a stop part 25 is provided at the other end. One end face of the corresponding connecting boss 11 can be pushed against the limiting baffle 24. A limiting rib 14 is provided in the area adjacent to the other end of the connecting boss 11, and the limiting rib 14 cooperates with the stop part 25.

[0064] In this way, the connecting boss 11 can be prevented from coming out of the connecting groove 21. In the first gear and the final gear, the limiting baffle 24 or the limiting rib 14 and the stop part 25 are respectively used to achieve the limiting, improve the positioning accuracy of the seat 20, and make the fixing stability and reliability of the seat 20 on the base 10 higher, so as to improve the safety of the safety seat 100.

[0065] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0066] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0067] In the description of this application, "multiple" means two or more.

[0068] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0069] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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.

[0071] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A child safety seat, characterized in that, include: A base, wherein a connecting boss is provided on the base, the connecting boss extends in the front-to-back direction and is provided with multiple locking holes in the front-to-back direction; A seat, wherein the seat is provided with a connecting groove that mates with the connecting boss, so that the seat is adjustablely positioned on the base; An adjustment component is disposed on the seat, and the engaging member of the adjustment component can be selectively engaged into any of the engaging holes to fix the seat. The backrest is detachably connected to the seat via a backrest tube. A limiting groove is provided on the connecting boss. The seat is provided with a limiting member that can be selectively inserted into the limiting groove. A blocking member is provided on the backrest tube. When the backrest is removed, the engaging member engages with the locking hole at the rear end. The limiting groove and the limiting member cooperate to lock the seat. When the backrest is installed on the seat, at least a portion of the blocking member is located between the limiting groove and the limiting member to release the locking of the seat.

2. The safety seat according to claim 1, characterized in that, The limiting member includes a limiting block, a connecting arm, and a first elastic member. One end of the connecting arm is pivotally connected to the seat, the limiting block is disposed at the other end of the connecting arm, and the first elastic member elastically pushes against the connecting arm and is adapted to push the limiting block toward the limiting groove.

3. The safety seat according to claim 1, characterized in that, The adjustment assembly includes an adjustment handle, a linkage, and a locking member. The adjustment handle is movably disposed at the front end of the seat. The linkage is connected to the adjustment handle and is used to drive the locking member to move toward or away from the locking hole.

4. The safety seat according to claim 3, characterized in that, The linkage includes a first arm, a second arm, and a third arm that extend away from each other and have an included angle. The first arm is pivotally connected to the seat, the second arm is hinged to the adjustment handle, and the third arm is hinged to the locking member.

5. The safety seat according to claim 4, characterized in that, The seat is provided with a guide bracket, and the engaging component is movably disposed within the guide bracket, which is used to guide the engaging component.

6. The safety seat according to claim 3, characterized in that, The connecting boss and the connecting groove are at least two that are arranged opposite each other in the left-right direction. The number of the linkage and the engaging member is the same as the number of the connecting boss. The adjusting handle includes: a handle body and a plurality of connecting rods connected to the handle body. The number of connecting rods is the same as the number of the connecting boss, and the plurality of connecting rods are used to synchronously drive the plurality of linkages to move.

7. The safety seat according to claim 6, characterized in that, The seat is provided with a guide portion for guiding the connecting rod, and there are multiple guide portions, which are spaced apart in the extension direction of the connecting rod.

8. The child safety seat according to claim 6, characterized in that, The adjustment assembly further includes a second elastic element disposed on the connecting rod. The second elastic element is used to drive the adjustment handle to reset and to stably engage the locking member with the locking hole.

9. The safety seat according to claim 1, characterized in that, One end of the connecting groove is provided with a limiting baffle for limiting the position of the boss.

10. The safety seat according to claim 9, characterized in that, The base is provided with a limiting rib corresponding to the connecting boss, and the seat is provided with a stop part that cooperates with the limiting rib on the end of the connecting groove away from the limiting baffle.

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