Bearing base, child safety seat and mounting method

Abstract

The invention relates to a bearing base, a child safety seat and an installation method.The bearing base comprises a base body, an upper pull belt arranged on the base body and an adjusting piece arranged on the base body, the adjusting piece is provided with a guiding part, the first end of the upper pull belt is connected to the base body, and the second end of the upper pull belt is connected to the adjusting piece. The upper drawstring is wound around the guide part and the upper part of the automobile seat and is connected to the rear side part of the automobile seat through a second end part, and the shape of the upper drawstring between the second end part and the guide part can be adjusted. When the bearing base is mounted on the automobile seat, the height position of the guide part is approximately flush with the winding part, so that when an automobile is collided, the upper pull belt cannot be lengthened due to extrusion of flexible parts such as sponge on a backrest of the seat, the child safety seat is prevented from overturning in the collision process, and the safety of the child safety seat is improved. And the riding safety of the children is further guaranteed.

Description

Technical Field

[0001] This invention relates to a support base, a child safety seat, and an installation method. Background Technology

[0002] To ensure children's safety while traveling in vehicles, child safety seats are becoming increasingly widely used. Child safety seats typically use Isofix connectors to be installed into car seats. To prevent the seat from flipping over in a collision, some child safety seats are equipped with a top strap, which secures the top of the child safety seat to the upper anchor point of the car seat. However, existing child safety seats can still flip and shift to some extent after a car collision, affecting children's safety while traveling. Summary of the Invention

[0003] The purpose of this invention is to provide a support base to further improve children's safety while riding in a vehicle.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a support base, the support base including a seat body, an upper pull strap disposed on the seat body, and an adjusting member disposed on the seat body, the adjusting member having a guide portion, the upper pull strap having a first end and a second end disposed at opposite ends in its own length direction, the first end being connected to the seat body, the upper pull strap passing around the guide portion and the upper part of the car seat and being connected to the rear side of the car seat through the second end, wherein the shape of the upper pull strap located between the second end and the guide portion is adjustable.

[0005] In some embodiments, the guide portion has at least a height position that is flush with or approximately flush with the upper part of the vehicle seat.

[0006] In some embodiments, the adjusting member is movably disposed on the seat, and the position of the guide portion changes when the adjusting member moves relative to the seat. Alternatively, multiple guide sections are provided along the extension direction of the adjusting member, and the pull-up band is wound around the multiple guide sections to change its shape.

[0007] In some embodiments, the adjusting member is adjustable in position along the vertical direction on the seat, and the height position of the guide portion changes when the adjusting member moves relative to the seat.

[0008] In some embodiments, the adjusting member is provided with a guide channel through which the pull strap passes in a vertical direction. The upper part of the guide channel is connected to the guide part. The first end is connected to the seat body and the second end passes upward through the guide channel and is guided by the guide part to connect to the car seat. The pull strap located between the first end and the guide channel extends in the same straight direction.

[0009] In some embodiments, the guide portion is located on top of the adjusting member, and the first end of the pull strap is always located below the guide portion on the seat body. The guide portion is an arcuate surface disposed on the top of the adjusting member, and the pull strap is tensioned on the guide portion to change the extension direction.

[0010] In some embodiments, the adjusting member is slidably disposed on the seat in a vertical direction, and a locking component is further provided between the seat and the adjusting member for locking the adjusting member onto the seat.

[0011] In some embodiments, the base has a fixedly disposed mounting seat, the adjusting member is slidably disposed on the mounting seat in a vertical direction, the locking assembly includes a locking member, a mating portion that cooperates with the locking member, and a first elastic member that provides the force required for the locking member to move toward the mating portion. The locking member is movably disposed on one of the adjusting member and the mounting seat, and the mating portion is disposed on the other of the adjusting member and the mounting seat and has a plurality of portions spaced apart in a vertical direction. When the locking assembly is in a locked state, the locking member cooperates with one of the mating portions. An unlocking operation member is also movably disposed on the mounting seat or the adjusting member, and the unlocking operation member is linked to the locking member to drive the locking member away from the mating portion.

[0012] In some embodiments, the mating part is disposed on the mounting base, and the locking member and the unlocking operation member are both disposed on the adjusting member. The unlocking operation member is movably disposed on the upper part of the adjusting member, and the locking member is disposed on the lower part of the adjusting member. A linkage component is provided between the unlocking operation member and the locking member to drive the locking member to move when the unlocking operation member moves relative to the adjusting member.

[0013] In some embodiments, the mounting base is provided with a mounting cavity, the adjusting member is slidably inserted into the mounting cavity, and the mating part is a locking hole provided on the mounting base, the locking hole communicating with the mounting cavity; The locking member is slidably disposed on the adjusting member, and the locking member has a locking portion that can be inserted into the lock hole, wherein the sliding direction of the locking member is perpendicular to the sliding direction of the adjusting member.

[0014] In some embodiments, the unlocking actuator is slidably disposed on the upper part of the adjusting member in a vertical direction, and the locking member is slidably disposed on the lower part of the adjusting member. The linkage component includes: A driving component, which is slidably mounted on the adjusting component; A linkage component is disposed between the unlocking operation component and the driving component in the vertical direction; The second elastic element provides the force required for the drive element to move upward away from the locking element; The sliding direction of the locking member on the adjusting member is perpendicular to the sliding direction of the driving member, and a mutually cooperating inclined driving structure is provided between the locking member and the driving member.

[0015] Another object of the present invention is to provide a child safety seat, including a seat body and a support base as described above, wherein the seat body is disposed on the seat body.

[0016] Another object of the present invention is to provide an installation method for the support base as described above, the installation method comprising the following steps: Adjust the upper pull strap so that the height of the upper pull strap after wrapping around the guide part is approximately flush with the wrapping part on the upper part of the car seat; The upper pull strap is wound around the winding part to the back of the car seat, and the second end is connected to the anchor position behind the back of the seat.

[0017] In some embodiments, the wrapping portion is the top of the seat back, and the upper pull strap is tensioned on the top of the seat back, wherein the tensioning section of the upper pull strap located between the guide portion, the front end of the seat back, and the rear end of the seat back extends in the same straight direction.

[0018] Due to the application of the above technical solution, the present invention has the following advantages: The support base provided by the present invention is provided with an adjusting member. The upper pull strap is guided by the guide part on the adjusting member and then connected to the car seat. When the support base is installed on the car seat, the shape of the upper pull strap between the guide part and the second end can be adjusted according to the height of the winding part used for winding the upper pull strap on the car seat. This allows the height of the guide part to be approximately flush with the winding part. Then, the upper pull strap changes direction through the guide part and is wound around to the back of the seat back for connection. In this way, when the car is involved in a collision, the upper pull strap located between the guide part and the second end will not become longer due to the compression of flexible components such as sponge on the seat back. This avoids the problem of increased forward displacement of the support base and the child safety seat as a whole, and prevents the child safety seat from overturning during a collision, further ensuring the safety of children riding in the car. Attached Figure Description

[0019] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a side view of a child safety seat installed on a car seat according to an embodiment of the present invention; Figure 2 For the present invention Figure 1 A structural diagram of the seat frame, top strap, and adjustment components in a child safety seat; Figure 3 for Figure 2 A structural decomposition diagram; Figure 4 for Figure 3 Exploded view of the structure of the adjustment component, locking component, unlocking operation component, and linkage component; Figure 5 for Figure 2 A longitudinal sectional view showing the locking component in the unlocked state; Figure 6 for Figure 5 Enlarged diagram of section A in the middle; Figure 7 for Figure 2 A longitudinal sectional view showing the locking component in a locked state; Figure 8 for Figure 7 Enlarged schematic diagram of section B in the middle; Figure 9 This is a schematic diagram illustrating the structure of a child safety seat installed in a car seat in the prior art; Figure 10 for Figure 9 A diagram illustrating how a child safety seat slides forward a certain distance after being impacted; In the attached diagrams above: 100. Child safety seat; 200. Car seat; 201. Seat seat; 202. Seat back; 20a. Front end; 20b. Rear end; 1. Base; 11. Base frame; 12. Mounting base; 13. Mating part; 14. Mounting cavity; 2. Seat body; 3. Top tension belt; 31. First end; 32. Second end; 33. Tensioning belt section; 4. Adjusting component; 41. Adjusting tube; 41a. Hollow cavity; 41b. Pin hole; 42. End plug; 42a. Guide part; 42b. Through hole; 43. Fixing base; 5. Unlock the control unit; 6. Locking component; 61. Locking block; 62. Locking pin; 63. Inclined surface; 7. Linkage component; 8. Driving component; 9. First elastic component; 10. Second elastic component. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] See Figures 1 to 8 The child safety seat 100 shown includes a support base and a seat body 2. The support base includes a seat body 1, and the seat body 2 is disposed on the seat body 1. The seat body 2 is used to provide support for a child, and the seat body 1 is used to be fixedly connected to a car seat 200. The car seat 200 includes a seat 201 and a seat back 202. When the child safety seat 100 is installed on the car seat 200, the seat body 1 is supported on the seat 201, and the rear part of the seat body 1 abuts against the front part of the seat back 202.

[0023] The child safety seat 100 also includes an upper pull strap 3 disposed on the seat body 1. The upper pull strap 3 is used to fix the upper part of the seat body 1 to the seat back 202 of the car seat 200 to prevent the child safety seat 100 from flipping relative to the car seat 200 and causing injury to the child in the event of a collision. Specifically, the upper pull strap 3 has a first end 31 and a second end 32. The first end 31 is connected to the seat body 1, and the upper pull strap 3 passes around the upper part of the seat back 202. Its second end 32 is connected to the car seat 200, specifically to the rear side of the seat back 202. An anchor is provided on the rear side of the seat back 202 for connecting the second end 32.

[0024] The child safety seat 100 also includes an adjustment member 4 disposed on the seat body 1. The adjustment member 4 has a guide portion 42a. After the first end 31 of the pull strap 3 is connected to the seat body 1, the pull strap 3 is wrapped around the guide portion 42a and the wrapping portion on the upper part of the car seat 200, and then connected to the car seat 200 from the second end 32. The shape of the pull strap 3 located between the second end 32 and the guide portion 42a can be adjusted.

[0025] In this embodiment, the adjusting member 4 is movably disposed on the base 1, and the position of the guide portion 42a is changed when the adjusting member 4 moves relative to the base 1. By adjusting the position of the adjusting member 4 on the base 1, the position of the guide portion 42a can be changed accordingly, thereby changing the shape of the pull strap 3 located between the second end 32 and the guide portion 42a.

[0026] Specifically, the adjusting member 4 is adjustable in position along the vertical direction on the seat body 1. When the adjusting member 4 moves relative to the seat body 1, it changes the height position of the guide part 42a. In this way, when the seat body 1 is fixed to the car seat 200 by the upper pull strap 3, the height position of the guide part 42a can be adjusted according to the height of the winding part on the car seat 200 for winding the upper pull strap 3, so that the height position of the guide part 42a is approximately flush with the winding part. Then, the upper pull strap 3 changes direction via the guide part 42a, and after winding around the winding part, it reaches the rear of the seat back 202, and is then connected to the anchoring position at the rear of the seat back 202 via the second end 32, thus realizing the connection of the upper pull strap 3 between the seat body 1 and the seat back 202. The aforementioned winding portion is usually the top of the seat back 202. In different cars, the height of the seat back 202 of the car seat 200 is different, which results in the different height positions of the aforementioned winding portion. Therefore, when installing it on different car seats 200, the position of the adjusting member 4 needs to be adjusted accordingly.

[0027] The main advantage of the above-mentioned setup is that when the child safety seat 100 is installed on different car seats 200, the height of the guide part 42a can be adjusted by adjusting the adjusting component 4, so that the guide part 42a can be approximately flush with the winding part on the car seat 200. Figure 1 As shown, this design allows the tension band segment 33 of the upper pull strap 3 located between the guide section 42a, the front end 20a of the seat back 202, and the rear end 20b of the seat back 202 to extend in the same straight direction. When a car is involved in a collision, the child safety seat 100 moves forward due to inertial impact. The tension band segment 33 located between the rear end 20b and the guide section 42a can still maintain its extension in the same straight direction. The upper pull strap 3 will no longer press down into flexible components such as foam on the car seat 200. This avoids the problem of the upper pull strap 3 becoming longer in this part, which would increase the forward displacement of the child safety seat 100. This prevents the child safety seat 100 from overturning during a collision and further ensures the safety of children riding in the car.

[0028] The aforementioned configuration in this application stems primarily from the applicant's discovery that existing child safety seats 100, after being installed on car seats 200, have one end connected to the seat body 1, and the other end directly wraps around the upper part of the seat back 202 and reaches its rear, subsequently being fixed at the anchoring position of the seat back 202. This is in conjunction with... Figure 9 , Figure 10 In comparison, if the first end 31 of the upper pull strap 3 is connected to the seat body 1 and then directly wraps around the winding part on the car seat 200, and is connected to the back of the seat back 202 of the car seat 200 from the second end 32, and if the winding part on the car seat 200 is high, the upper pull strap 3 will wrap upward from the first end 31 and pass through the winding part to the anchoring position at the back of the seat back 202. When the car is involved in a collision, when the child safety seat 100 moves forward due to inertial impact, the upper pull strap 3 will press down on the foam or other components on the seat back 202 at the winding part on the car seat 200, causing the length of the strap segment 3a in that part to become longer. This allows the child safety seat 100 to move forward by a certain amount of displacement, causing the child safety seat 100 to move forward or flip forward, which poses a safety hazard.

[0029] In other embodiments, multiple guide sections can be provided so that the pull-up band 4 changes the shape between the second end 32 and the guide section after passing through multiple guide sections.

[0030] See Figures 1 to 8As shown, in this embodiment, the guide portion 42a is located at the top of the adjusting member 4. The first end 31 of the upper pull strap 3 is always located below the guide portion 42a on the seat body 1. After its first end 3 is connected to the seat body 1, the upper pull strap 3 extends upward and wraps around the guide portion 42a, then wraps around the upper part of the car seat 200, and finally is connected to the car seat 200 by the second end 32. Specifically, the adjusting member 4 is provided with a guide channel for the upper pull strap 3 to pass through in the vertical direction. After the first end 31 is connected to the seat body 1, the second end 32 passes upward through the guide channel, and then is guided by the guide portion 42a and connected to the car seat 200. The upper pull strap 3 located between the first end 31 and the guide channel extends in the same straight line direction. The guide portion 42a is specifically an arc-shaped surface provided at the top of the adjusting member 4. The upper pull strap 3 is tensioned on the guide portion 42a to change its extension direction.

[0031] See Figures 1 to 8 As shown, in this embodiment, the adjusting member 4 is slidably disposed on the seat 1 in the vertical direction. A locking component is also provided between the seat 1 and the adjusting member 4 to lock the adjusting member 4 on the seat 1. The locking component has multiple locking positions, so that the adjusting member 4 has multiple height positions relative to the seat 1, and correspondingly, the guide part 42a has multiple different height positions.

[0032] Specifically, see Figures 2 to 8 As shown, the seat 1 includes a seat frame 11 and a mounting base 12 fixedly mounted on the seat frame 11. An adjusting member 4 is slidably mounted on the mounting base 12 in the vertical direction. A locking assembly is located between the mounting base 12 and the adjusting member 4. Specifically, the locking assembly includes a locking member 6, a mating portion 13 that cooperates with the locking member 6, and a first elastic member 9 that provides the force required for the locking member 6 to move towards the mating portion. Here, the locking member 6 is movably mounted on the adjusting member 4, and the mating portion 13 is mounted on the mounting base 12 and has multiple portions spaced apart in the vertical direction. When the locking assembly is in the locked state, the locking member 6 cooperates with one of the mating portions 13, fixing the adjusting member 4 relative to the mounting base 12. An unlocking operation member 5 is also movably mounted on the mounting base 12 or the adjusting member 4. This unlocking operation member 5 is linked to the locking member 6 to drive the locking member 6 away from the mating portion 13 to achieve unlocking. In other embodiments, the locking member 6 can also be mounted on the mounting base 12 and the mating portion 13 can be mounted on the adjusting member 4.

[0033] Specifically, in this embodiment, such as Figure 4As shown, the mounting base 12 is provided with a mounting cavity 14, and the adjusting member 4 is slidably inserted into the mounting cavity 14. Here, the adjusting member 4 includes an adjusting tube 41 and an end plug 42 fixedly disposed on the top of the adjusting tube 41. The adjusting tube 41 is hollow and has a hollow cavity 41a. The end plug 42 has a through hole 42b through which the pull strap 3 can pass. The top surface of the end plug 42 forms a guide part 42a. After passing through the through hole 42b, the pull strap 3 changes its extension direction by passing around the top surface of the end plug 42. The lower part of the adjusting tube 41 is slidably inserted into the mounting cavity 14. During installation, the adjusting tube 41 and the mounting base 12 can be set as hollow tubes with similar shapes but different diameters. The mating part 13 is a locking hole provided on the mounting base 12, which communicates with the mounting cavity 14.

[0034] Both the locking element 6 and the unlocking element 5 are mounted on the adjusting element 4. The unlocking element 5 is movably mounted on the upper part of the adjusting element 4, and the locking element 6 is mounted on the lower part of the adjusting element 4. A linkage component is provided between the unlocking element 5 and the locking element 6 so that when the unlocking element 5 moves relative to the adjusting element 4, it drives the locking element 6 to move, thereby enabling the unlocking operation of the locking element.

[0035] See here. Figures 4 to 8 As shown, a fixing seat 43 is fixedly provided at the lower part of the adjusting tube 41 for installing the locking member 6. The locking member 6 includes a locking block part 61 and a locking pin part 62 that protrudes outward from one end face of the locking block part 61. The locking block part 61 is slidably disposed on the fixing seat 43. The lower part of the adjusting tube 41 is provided with a pin hole 41b. The locking pin part 62 can be slidably disposed in the pin hole 41b and extend out of the adjusting tube 41, so as to be able to be inserted into the mating part 13 on the mounting base 12.

[0036] The unlocking operation component 5 is specifically an operation button slidably mounted on the end plug 42. The linkage component includes a driving component 8, a linkage component 7, and a second elastic component 10. The driving component 8 is slidably mounted on the adjusting component 4, and the sliding direction of the locking component 6 on the adjusting component 4 is perpendicular to the sliding direction of the driving component 8. The linkage component 7 is positioned vertically between the unlocking operation component 5 and the driving component 8. The second elastic component 10 provides the force required for the driving component 8 to move upward away from the locking component 6. A mutually cooperating inclined driving structure is provided between the locking component 6 and the driving component 8, specifically as follows... Figure 4As shown, the locking block 61 of the locking member 6 has an inclined surface 63 that gradually slopes downwards in the direction of the locking pin 62. The driving member 8 is specifically a slider that is slidably mounted on the fixed base 43, and its lower part has an inclined surface (not shown in the figure) that cooperates with the inclined surface 63. The linkage member 7 is specifically a rod whose upper end abuts against the unlocking operation member 5 and whose lower end abuts against the driving member 8. The second elastic member 10 is a spring that is located between the driving member 8 and the fixed base 43 to provide the force required for the driving member 8 to move upwards. Thus, when the unlocking operation member 5 is pressed down, the driving member 8 is driven downwards by the push of the linkage member 7, which in turn drives the locking member 6 to slide away from the mating part 13 and unlock it. After the unlocking operation member 5 is released, the unlocking operation member 5 is reset under the action of the first elastic member 9 and the second elastic member 10, and the locking pin 62 of the locking member 6 is reinserted into the mating part 13 at the corresponding height position.

[0037] When installing the child safety seat 100 of this embodiment onto the car seat 200, first, according to the height of the top of the seat back 202, press the unlocking operation 5 to unlock the locking member 6, pull the adjusting member 4 upward to raise it, or push the adjusting member 4 downward to lower it, so that the height of the guide part 42a on the adjusting member 4 is approximately level with the height of the top of the seat back 202. Then, hold the second end 32 of the upper pull strap 3, and wrap the upper part of the upper pull strap 3 around the guide part 42a and the top of the seat back 202 to reach the rear of the seat back 202. Then, connect the second end 32 to the anchoring position at the rear of the seat back 202. Installation and adjustment are both convenient. When the child safety seat 100 is not in use, the height of the adjusting member 4 can be lowered so that the top of the adjusting member 4 is level with the upper end of the seat body 1, and the adjusting member 4 is at least partially housed inside the seat body 1.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. In the event of any contradiction or inconsistency between the definitions used herein and those contained in other published documents, the definitions used herein shall prevail.

[0039] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0040] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0042] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A load bearing base, characterized by: The bearing base comprises a seat body, an upper pulling belt arranged on the seat body, and an adjusting member arranged on the seat body, the adjusting member has a guide portion, the upper pulling belt has a first end portion and a second end portion arranged at different ends along a length direction of the upper pulling belt, the first end portion is connected to the seat body, the upper pulling belt passes through the guide portion and an upper portion of a car seat and is connected to a rear portion of the car seat through the second end portion, and a shape of the upper pulling belt between the second end portion and the guide portion is adjustable.

2. The load bed of claim 1, wherein: The guide portion has at least a height position which is flush or approximately flush with the upper portion of the car seat.

3. The load bed of claim 1, wherein: The adjusting member is movably arranged on the seat body, and a position of the guide portion is changed when the adjusting member moves relative to the seat body. Alternatively, a plurality of guide portions are arranged along an extension direction of the adjusting member, and the upper pulling belt passes through the plurality of guide portions to change the shape.

4. The load bed of claim 3, wherein: The adjusting member is adjustably arranged on the seat body in an up-down direction, and a height position of the guide portion is changed when the adjusting member moves relative to the seat body.

5. The load bed of claim 4, wherein: The adjusting member is provided with a guide channel through which the upper pulling belt passes in the up-down direction, an upper portion of the guide channel is connected to the guide portion, the first end portion is connected to the seat body, the second end portion passes through the guide channel upwardly and is guided by the guide portion to be connected to the car seat, and the upper pulling belt between the first end portion and the guide channel extends along the same straight line direction.

6. The load bed of claim 3, wherein: The guide portion is located at a top portion of the adjusting member, and the first end portion of the upper pulling belt is always below the guide portion on the seat body, wherein the guide portion is an arc-shaped surface arranged at the top portion of the adjusting member, and the upper pulling belt is tensioned on the guide portion to change the extension direction.

7. The load bed of any one of claims 1 to 6, wherein: The adjusting member is slidably arranged on the seat body in the up-down direction, and a locking assembly is further arranged between the seat body and the adjusting member to lock the adjusting member on the seat body.

8. The load bed of claim 7, wherein: The seat body has a fixedly arranged mounting seat, the adjusting member is slidably arranged on the mounting seat in the up-down direction, The locking assembly comprises a locking member, a cooperating portion which cooperates with the locking member, and a first elastic member which provides a required force for moving the locking member towards the cooperating portion, the locking member is movably arranged on one of the adjusting member and the mounting seat, the cooperating portion is arranged on the other one of the adjusting member and the mounting seat and has a plurality of portions which are arranged in the up-down direction, and the locking member cooperates with one of the cooperating portions when the locking assembly is in a locked state. An unlocking operating member is further movably arranged on the mounting seat or the adjusting member, and the unlocking operating member is arranged in linkage with the locking member to drive the locking member to move away from the cooperating portion.

9. The load bed of claim 8, wherein: The matching part is arranged on the mounting base, the locking member and the unlocking operation member are arranged on the adjusting member, the unlocking operation member is movably arranged on the upper part of the adjusting member, the locking member is arranged on the lower part of the adjusting member, and a linkage assembly is arranged between the unlocking operation member and the locking member to drive the locking member to move when the unlocking operation member moves relative to the adjusting member.

10. The load bed of claim 9, wherein: The mounting base is provided with a mounting cavity, the adjusting member is slidingly arranged in the mounting cavity, and the matching part is a locking hole arranged on the mounting base and communicating with the mounting cavity. The locking member is slidingly arranged on the adjusting member, and the locking member has a locking part which is arranged in the locking hole in a matching manner, wherein the sliding direction of the locking member is perpendicular to the sliding direction of the adjusting member.

11. The load bed of claim 9, wherein: The unlocking operation member is slidingly arranged on the upper part of the adjusting member in the up-down direction, and the locking member is slidingly arranged on the lower part of the adjusting member, and the linkage assembly comprises: a driving member which is slidingly arranged on the adjusting member in the up-down direction; a linkage member which is arranged between the unlocking operation member and the driving member in the up-down direction; a second elastic member which provides the driving member with a required force for moving upward away from the locking member; wherein the sliding direction of the locking member on the adjusting member and the sliding direction of the driving member are perpendicular to each other, and the locking member and the driving member are provided with mutually matched inclined surface driving structures.

12. A child safety seat, characterized by: The seat body is arranged on the seat body.

13. A method of mounting a load bed as claimed in any one of claims 1 to 11, characterised by: The mounting method comprises the following steps: adjusting the upper pull belt so that the height position of the upper pull belt after being arranged around the guide part is approximately flush with the arrangement part of the upper part of the automobile seat; arranging the upper pull belt around the arrangement part to the rear of the seat back of the automobile seat, and connecting the second end part to the anchoring position at the rear of the seat back.

14. The method of mounting a load bed of claim 13, wherein: The arrangement part is the top of the seat back, and the upper pull belt is tensioned at the top of the seat back, wherein the tensioned belt segment of the upper pull belt between the guide part, the front end part of the seat back and the rear end part of the seat back extends in the same straight line direction.

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