ISOFIX assembly with multi-stage strong lock for child safety seat and its stage adjustment and locking method

Abstract

The present invention discloses an ISOFIX assembly with multiple gears and strong locks for a child safety seat and a gear adjustment and locking method thereof, and relates to the field of child safety seats, and includes a locking member, a fixing frame, and a main body, wherein one end of the locking member is rotatably connected to two buckles on the inner side. In the present invention, when the control rod rotates, it drives the rotating disk to rotate in the movable groove, and due to the action of the control rod at a non-central position, a reverse force is generated on the movable frame, so that it moves in a straight line under the restriction of the first slide rail, and the movable frame drives the locking block to slide between the two blocks, and utilizes the inclined surface design at both ends of the locking block to interact with the blocks during the movement process to achieve the fixing and release of the gear sliding sleeve, and this mechanism enables the gear sliding sleeve to be adjusted to multiple gears on the surface of the main body, and is accurately connected to the car seat connecting shaft through the locking member at the bottom of the fixing frame, and each time the control rod is rotated, the position and movable direction of the locking block are changed accordingly, and a flexible and stable gear adjustment effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of child safety seats, in particular to an ISOFIX component of a child safety seat with multiple gears and strong locks and a gear adjustment and locking method thereof. Background Art

[0002] A child seat, also known as a child restraint system, is a seat designed for children of different ages (or weights) and installed in a car to effectively improve the safety of children riding in a car. In the event of a car collision or sudden deceleration, it reduces the impact on the child and restricts the child's body movement to reduce injuries and ensure the child's safety while riding in a car. A child seat with a supporting leg structure is more stable and safe and can effectively protect children. The ISOFIX component is used to install the child seat on the car seat, and the seat is installed by connecting the ISOFIX component to the connecting shaft of the car seat.

[0003] For example, the “ISOFIX assembly for a child safety seat” with publication number CN105644397B comprises an ISOFIX fixing frame connected to a seat back fixing plate and an ISOFIX sliding member assembly moving in the ISOFIX fixing frame, wherein the ISOFIX sliding member assembly comprises an ISOFIX standard interface, a sliding member, a movable locking plate and a control rod, wherein the ISOFIX standard interface is controlled by the sliding member and the ISOFIX standard interface is released when the sliding member slides backward, wherein a control rod is provided at the end of the sliding member, a first through hole for the control rod to extend into is provided in the middle of the locking plate, a slope gradually rising from the front to the rear is provided in the first through hole, a snap plate is provided above the locking plate, a first notch for the snap plate to extend into is provided on the ISOFIX fixing frame, and a return spring is provided below the locking plate.

[0004] However, in the prior art, traditional ISOFIX components lack the function of adjusting gears, resulting in a lack of flexibility when installed on different car seats, resulting in the situation that the installation is not firm enough or is too cumbersome. In addition, traditional ISOFIX components have problems such as unstable internal structure and lack of locking function, which affects the connection strength. In addition, the connection process between the ISOFIX component and the car seat connecting shaft is relatively cumbersome, which is not conducive to the rapid installation or removal of the child seat, thereby reducing the efficiency of the disassembly and assembly of the child seat. Summary of the invention

[0005] The purpose of the present invention is to provide an ISOFIX assembly with multiple strong locks for a child safety seat and a gear adjustment and locking method thereof, so as to solve the problem that the above-mentioned background technology has no gear adjustment function and lacks locking function, and is prone to loosening.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an ISOFIX assembly for a child safety seat with multiple gears and strong locks, comprising a locking member, a fixing frame and a main body, wherein the locking member has two buckles rotatably connected to the inner side of one end, a plurality of stoppers are evenly distributed on the surface of the main body, a sliding groove is provided at the bottom of the main body, a gear adjustment assembly is installed at one side of the fixing frame, a control mechanism is installed at the inner side of the fixing frame, a rotating mechanism is installed at the bottom of the fixing frame, a movable groove is provided at one side of the fixing frame, and a gear sliding sleeve is fixedly connected to the bottom end of the fixing frame, and the gear sliding sleeve is slidably connected to the main body;

[0007] The gear shifting assembly comprises a moving frame and a locking block, the moving frame is slidably connected to the first slide rail, one end of the moving frame is provided with a mounting groove, one end of the locking block is slidably connected to the mounting groove, one end of the locking block is fixedly connected to a spring, a circular plate is slidably connected to the top of the inner cavity of the mounting groove, a movable rod is fixedly connected to the top of the circular plate, a rotating disk is installed on the inner side of the movable groove, a control rod is fixedly connected to one side of the rotating disk, one end of the control rod passes through the moving frame, and the control rod is fixedly connected to the moving frame, and the bottom end of the locking block is located between the two stoppers;

[0008] The control mechanism includes a screw rod, one end of which is rotatably connected to a fixed frame, and the other end of which is rotatably connected to the top of a gear sleeve. A lifting block is threadedly connected to the surface of the screw rod, one end of the lifting block is fixedly connected to a lifting frame, and a positioning piece is installed in the middle of one end of the lifting frame.

[0009] Preferably, a positioning groove is provided on one side of the movable frame, a track is fixedly connected to the bottom of the lifting frame, a movable block is slidably connected to the surface of the track, and the bottom of the movable block is fixedly connected to the top of the movable rod.

[0010] Preferably, the positioning member includes a movable sleeve and a threaded rod, one end of the threaded rod is rotatably connected to the lifting frame, the movable sleeve is threadedly connected to the threaded rod, the inner cavity of the lifting frame is fixedly connected with a sliding rod, and the sliding rod is slidably connected to the movable sleeve.

[0011] Preferably, a gear is fixedly connected to the outer surface of one end of the threaded rod, a locking rod is fixedly connected to one end of the movable sleeve, the aperture of the through hole on one side of the lifting frame is smaller than the outer diameter of the movable sleeve, and one end of the locking rod is plugged into the positioning groove.

[0012] Preferably, one end of the lifting block is fixedly connected to a first limit block, the first limit block is slidably connected to a fixed frame, the top end of the screw rod passes through the fixed frame, and the top of the screw rod is connected to a first handle.

[0013] Preferably, the side wall of the fixed frame is fixedly connected to a mounting frame, the mounting frame is located outside the lifting frame, and a limiting hole is opened on one side of the mounting frame, the inner wall of the mounting frame is fixedly connected to a rack, the rack is meshingly connected to the gear, a limiting rod is slidably connected inside the limiting hole, one end of the limiting rod is fixedly connected to the gear, and the diameter of the other end of the limiting rod is larger than the width of the limiting hole, a guide block is slidably connected inside the slide groove, and the top of the guide block is fixedly connected to the bottom of the gear sleeve.

[0014] Preferably, the rotating mechanism includes a fixed block, which is fixedly connected to the bottom of the fixed frame, and one end of the fixed block is rotatably connected to a rotating rod, the middle outer surface of the rotating rod is fixedly connected to a lifting frame, and the bottom of the rotating rod is fixedly connected to the top of one end of the locking member.

[0015] Preferably, a swing frame is movably sleeved on the outer surface of the rotating rod, a pushing block is rotatably connected to the inner side of one end of the swing frame, and a second handle is fixedly connected to one end of the swing frame.

[0016] Preferably, one end of the fixed block is fixedly connected to a support frame, a swing block is rotatably connected inside the support frame, one end of the swing block is fixedly connected to a second limit block, and the second limit block abuts against the ratchet.

[0017] The method for adjusting and locking the ISOFIX component of a child safety seat with multiple strong locks comprises the following steps:

[0018] Step 1: Unlock and determine the moving direction of the lock. First, use the control rod to drive the rotating disk to rotate inside the movable groove. At this time, the rotating disk will exert a reverse force on the moving frame, so that when the moving frame slides on the surface of the first slide rail, it can control the position of the locking block and move the middle of the bottom end of the locking block so that it is no longer between the two stoppers.

[0019] Step 2: After the gear adjustment is completed, the position of the lock piece can be adjusted by using the gear sleeve to slide on the surface of the main body. When the gear sleeve moves, the inclined surface of the locking block moves in a certain direction and acts in the opposite direction on the locking block, so that the locking block squeezes the spring to compress it when moving. The elasticity of the spring allows the locking block to be reset between the two blocks after the gear adjustment is completed.

[0020] Step 3: Locking, using the screw rod to drive the lifting block and the lifting frame to move together, so that the lifting frame pushes the movable rod and the moving block to move together, so that the distance between the circular plate and the locking block is reduced, so that the elastic force applied to the locking block by the spring is increased, so that the locking block can firmly abut the main body, thereby completing the initial locking. When the lifting frame is lifted, the gear is driven by the force of the rack to drive the threaded rod to rotate, and the moving sleeve will also slide on the surface of the sliding rod under the action of the internal thread, and then the locking rod is pushed to insert into the positioning groove, completing the horizontal direction restriction and secondary locking of the moving frame;

[0021] Step 4: Accurately adjust the direction. When the second handle drives the swing frame to move, the inner push block can exert force on the ratchet, so that the rotating rod can drive the locking part to rotate, and the angle of each rotation can be controlled by the arc of rotation of the swing frame.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, when the control lever rotates, it drives the rotating disk to rotate in the movable groove. Due to the action of the control lever in the non-central position, a reverse force is generated on the movable frame, so that it moves in a straight line under the restriction of the first slide rail. The movable frame drives the locking block to slide between the two blocks. The inclined surface design at both ends of the locking block is utilized to interact with the blocks during the movement to achieve the fixation and release of the gear sleeve. This mechanism enables the gear sleeve to be adjusted to multiple gears on the surface of the main body, and is accurately connected to the car seat connecting shaft through the locking buckle at the bottom of the fixing frame. Every time the control lever is rotated, the position and movable direction of the locking block change accordingly, thereby achieving a flexible and stable gear adjustment effect.

[0024] When the first handle drives the screw rod to rotate, the lifting block realizes lifting movement, and the first limit block slides on the fixed frame to ensure stability. The lifting of the lifting block drives the lifting frame to move, and then the movable rod and the circular plate are pushed to slide in the installation groove through the moving block, shortening the distance with the locking block, increasing the elastic force of the spring, avoiding the locking block from loosening and the gear sliding sleeve from sliding at will. When switching the position of the locking block, the moving block slides on the track to ensure that the lifting frame does not interfere with the gear switching, the position of the lifting frame changes, and the locking firmness is improved. At the same time, the positioning member moves with the lifting frame, and drives the threaded rod to rotate through the interaction between the gear and the rack, and then controls the moving sleeve to move along the sliding rod, pushes the locking rod to insert into the positioning slot, and realizes the locking of the moving frame in the horizontal direction to avoid its random movement. In summary, this design ensures the accuracy and firmness of gear adjustment and improves the stability and reliability of the overall structure.

[0025] 3. In the present invention, by using the second handle, the user can conveniently operate the swing frame to rotate, and then through the interaction between the pushing block and the ratchet, the rotation of the ratchet and the rotating rod is realized, so as to accurately control the angle of the locking member, and facilitate the clamping with the connecting shaft of the car seat. During the rotation of the ratchet, the second limit block plays a role in smooth rotation, and during the reverse rotation, it and the pushing block jointly prevent the ratchet from rotating at will, thereby ensuring the stability of the connection. The overall design improves the convenience of operation and the practicality of the mechanism, and enhances durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the ISOFIX assembly of the child safety seat with multiple strong locks of the present invention;

[0027] Figure 2 It is a partial structural schematic diagram of the ISOFIX assembly of the child safety seat with multiple strong locks of the present invention;

[0028] Figure 3 It is a schematic diagram of the disassembled structure of the gear adjustment component in the ISOFIX component of the child safety seat with multiple gears and strong locks of the present invention;

[0029] Figure 4 It is a partial front view structural schematic diagram of the ISOFIX assembly of the child safety seat with multiple strong locks of the present invention;

[0030] Figure 5 It is a schematic diagram of the disassembled structure of the control mechanism in the ISOFIX assembly of the child safety seat with multiple strong locks of the present invention;

[0031] Figure 6 It is a schematic diagram of the disassembled structure of the positioning member in the ISOFIX assembly of the child safety seat with multiple strong locks of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the rotating mechanism in the ISOFIX assembly of the child safety seat with multiple strong locks of the present invention;

[0033] Figure 8 It is a front view schematic diagram of the internal structure of the rotating mechanism in the ISOFIX assembly of the child safety seat with multiple strong locks of the present invention;

[0034] Fig. 9 The present invention is a flow chart of a method for adjusting and locking the gears of an ISOFIX assembly with multiple gear strong locks for a child safety seat.

[0035] In the figure: 1, locking member; 11, buckle; 2, fixing frame; 21, movable groove; 22, first slide rail; 23, gear sliding sleeve; 231, guide block; 24, mounting frame; 25, rack; 26, limiting hole; 3, main body; 31, block; 32, slide groove; 4, gear adjustment component; 41, rotating plate; 411, control rod; 42, moving frame; 421, positioning groove; 422, mounting groove; 43, locking block; 44, movable rod; 441, round plate; 45, moving block; 46, spring; 5, control mechanism Structure; 51, first handle; 52, screw rod; 53, lifting frame; 531, track; 54, positioning piece; 541, gear; 542, limit rod; 543, movable sleeve; 544, threaded rod; 545, locking rod; 546, sliding rod; 55, lifting block; 551, first limit block; 6, rotating mechanism; 61, swing frame; 611, pushing block; 62, second handle; 63, ratchet; 64, rotating rod; 65, fixed block; 66, support frame; 67, swing block; 671, second limit block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Reference Figure 1-5 As shown: the ISOFIX component of the child safety seat with multiple gears and strong locks includes a lock member 1, a fixing frame 2 and a main body 3. The inner side of one end of the lock member 1 is rotatably connected to two buckles 11. A plurality of blocks 31 are evenly distributed on the surface of the main body 3. A slide groove 32 is provided at the bottom of the main body 3. A gear adjustment component 4 is installed on one side of the fixing frame 2. A control mechanism 5 is installed on the inner side of the fixing frame 2. A rotating mechanism 6 is installed at the bottom of the fixing frame 2. A movable groove 21 is provided on one side of the fixing frame 2. A gear sliding sleeve 23 is fixedly connected to the bottom end of the fixing frame 2. The gear sliding sleeve 23 is slidably connected to the main body 3.

[0038] The gear shifting assembly 4 includes a moving frame 42 and a locking block 43. The moving frame 42 is slidably connected to the first slide rail 22. A mounting groove 422 is provided at one end of the moving frame 42. One end of the locking block 43 is slidably connected to the mounting groove 422. A spring 46 is fixedly connected to one end of the locking block 43. A circular plate 441 is slidably connected to the top of the inner cavity of the mounting groove 422. A movable rod 44 is fixedly connected to the top of the circular plate 441. A rotating disk 41 is installed on the inner side of the movable groove 21. A control rod 411 is fixedly connected to one side of the rotating disk 41. One end of the control rod 411 passes through the moving frame 42. The control rod 411 is fixedly connected to the moving frame 42. The bottom end of the locking block 43 is located between the two stoppers 31.

[0039] The control mechanism 5 includes a screw rod 52, one end of which is rotatably connected to the fixed frame 2, and the other end of the screw rod 52 is rotatably connected to the top of the gear sleeve 23. A lifting block 55 is threadedly connected to the surface of the screw rod 52, one end of the lifting block 55 is fixedly connected to the lifting frame 53, and a positioning piece 54 is installed in the middle of one end of the lifting frame 53.

[0040] In this embodiment, when the control rod 411 rotates, it can drive the rotating disk 41 to rotate together. Since the control rod 411 is not located at the center of one side of the rotating disk 41, when the rotating disk 41 rotates inside the movable groove 21, it will exert a reverse force on the moving frame 42, causing the moving frame 42 to move in a straight line under the restriction of the first slide rail 22. As the moving frame 42 moves, the locking block 43 will also slide between the two stoppers 31.

[0041] Since the two ends of the locking block 43 are two opposite inclined surfaces, when the middle of the locking block 43 is located between the two stoppers 31, the gear sleeve 23 and other components will not be able to move. When the two ends of the locking block 43 are located between the two stoppers 31, the inclined surface will determine its moving direction. During the movement process, due to the inclined surface design of the locking block 43, it will act in the opposite direction to the locking block 43 during movement, causing it to slide inside the mounting groove 422 and squeeze the spring 46. When the gear sleeve 23 moves to a certain position, the elasticity of the spring 46 will push the locking block 43 back between the two stoppers 31.

[0042] This mechanism utilizing the cooperation of the locking block 43 and the stopper 31 enables the gear sleeve 23 to slide on the surface of the main body 3, thereby realizing multi-gear adjustment. In this way, the locking member 1 at the bottom of the fixing frame 2 cooperates with the buckle 11 to accurately connect with the car seat connecting shaft. Therefore, whenever the rotating disk 41 rotates 90 degrees under the operation of the control rod 411, the position of the bottom end of the locking block 43 will be switched, and after rotating 180 degrees, the movable direction will also be adjusted accordingly.

[0043] Embodiment 2: Figure 2 - Figure 6As shown, a positioning groove 421 is provided on one side of the moving frame 42, a track 531 is fixedly connected to the bottom of the lifting frame 53, a moving block 45 is slidably connected to the surface of the track 531, and the bottom of the moving block 45 is fixedly connected to the top of the movable rod 44. The positioning member 54 includes a moving sleeve 543 and a threaded rod 544, one end of the threaded rod 544 is rotatably connected to the lifting frame 53, the moving sleeve 543 is threadedly connected to the threaded rod 544, a sliding rod 546 is fixedly connected to the inner cavity of the lifting frame 53, and the sliding rod 546 is slidably connected to the moving sleeve 543. A gear 541 is fixedly connected to the outer surface of one end of the threaded rod 544, and a locking rod 545 is fixedly connected to one end of the moving sleeve 543. The aperture of the through hole on one side of the lifting frame 53 is smaller than the outer diameter of the moving sleeve 543, and one end of the locking rod 545 is plugged into the positioning groove 421. One end of the lifting block 55 is fixedly connected to a first limit block 551, and the first limit block 551 is slidably connected to the fixed frame 2. The top of the screw rod 52 passes through the fixed frame 2, and the top of the screw rod 52 is connected to the first handle 51. The side wall of the fixed frame 2 is fixedly connected to the mounting frame 24, and the mounting frame 24 is located outside the lifting frame 53. A limit hole 26 is provided on one side of the mounting frame 24. A rack 25 is fixedly connected to the inner wall of the mounting frame 24, and the rack 25 is meshed and connected with the gear 541. A limit rod 542 is slidably connected inside the limit hole 26. One end of the limit rod 542 is fixedly connected to the gear 541, and the diameter of the other end of the limit rod 542 is larger than the width of the limit hole 26. A guide block 231 is slidably connected inside the slide groove 32, and the top of the guide block 231 is fixedly connected to the bottom of the gear sliding sleeve 23.

[0044] In this embodiment, when the first handle 51 drives the screw rod 52 to rotate, the lifting and lowering movement of the lifting block 55 can be controlled. During the lifting process, the first limit block 551 at one end of the lifting block 55 will slide on the side of the fixed frame 2 to ensure that the lifting block 55 remains stable during lifting. At the same time, the lifting and lowering of the lifting block 55 will also drive the lifting frame 53 to move, so that the lifting frame 53 gradually approaches the installation groove 422. This will cause the moving block 45 to push the movable rod 44 and the circular plate 441 to move, so that the circular plate 441 slides inside the top of the installation groove 422, thereby shortening the distance between the circular plate 441 and the locking block 43, and increasing the elastic force of the spring 46 on the locking block 43.

[0045] This design can not only prevent the locking block 43 from loosening and causing the gear sleeve 23 to slide freely on the surface of the main body 3, but also ensure the firmness of the adjustment.

[0046] When the position of the locking block 43 is switched, the moving block 45 slides on the track 531 to ensure that the lifting frame 53 does not interfere with the gear switching of the locking block 43. When the lifting frame 53 moves, if the middle of the bottom end of the locking block 43 is located between the two stoppers 31, it means that the gear shifting has been completed and is in a locked state. At this time, the change in the position of the lifting frame 53 will further improve the firmness of the locking. At the same time, the positioning member 54 will also move with the lifting frame 53, causing the gear 541 to rotate under the action of the rack 25. In this process, the gear 541 will drive the threaded rod 544 to rotate. As the threaded rod 544 rotates, the control moving sleeve 543 will move along the surface of the sliding rod 546, thereby pushing the locking rod 545 to move. This allows the locking rod 545 to be inserted into the interior of the positioning groove 421, and the locking of the positioning groove 421 by the locking rod 545 can prevent the moving frame 42 from moving randomly in the horizontal direction.

[0047] Embodiment 3: According to Figure 7 and Figure 8 As shown, the rotating mechanism 6 includes a fixed block 65, which is fixedly connected to the bottom of the fixed frame 2, and one end of the fixed block 65 is rotatably connected to a rotating rod 64, the outer surface of the middle part of the rotating rod 64 is fixedly connected to the lifting frame 53, and the bottom of the rotating rod 64 is fixedly connected to the top of one end of the locking member 1. A swing frame 61 is movably sleeved on the outer surface of the rotating rod 64, a push block 611 is rotatably connected to the inner side of one end of the swing frame 61, and a second handle 62 is fixedly connected to one end of the swing frame 61. One end of the fixed block 65 is fixedly connected to a supporting frame 66, and a swing block 67 is rotatably connected to the inner side of the supporting frame 66, and one end of the swing block 67 is fixedly connected to a second limit block 671, and the second limit block 671 abuts against the ratchet 63.

[0048] In this embodiment, the user can easily push the swing frame 61 to rotate by using the second handle 62. When the swing frame 61 swings around the rotating rod 64, it drives the push block 611 to move together. The push block 611 interacts with the ratchet 63, thereby driving the ratchet 63 to rotate. The rotation of the ratchet 63 drives the rotating rod 64 to rotate, thereby controlling the angle of the lock member 1. This design enables the lock member 1 to be accurately engaged with the connecting shaft of the car seat by using the buckle 11.

[0049] During the rotation of the ratchet 63, the second stopper 671 does not block the rotation of the ratchet 63. Instead, it is pushed by the ratchet 63, thereby achieving a smooth rotation. When the swing frame 61 rotates, the pusher 611 is moved under the action of the ratchet 63, making the entire mechanism more flexible and smooth in operation.

[0050] However, when the ratchet 63 rotates in the reverse direction, the ratchet 63 will be blocked by the second limit block 671 and the push block 611 at the same time. This blocking mechanism can effectively prevent the ratchet 63 from rotating arbitrarily after connection, thereby ensuring the stability and reliability of the connection.

[0051] Through the coordinated action of the second handle 62 and the swing block 67, the user can easily control the behavior of the push block 611 and the second limit block 671 when the ratchet wheel 63 rotates. This allows the lock component 1 to be rotated at will when needed, such as for storage and rotation after disassembly. This design not only improves the convenience of user operation, but also enhances the practicality and durability of the entire mechanism.

[0052] Embodiment 4: According to Fig. 9 As shown, the gear adjustment and locking method of the ISOFIX component of the child safety seat with multi-level strong lock includes the following steps:

[0053] 1) After unlocking and determining the moving direction of the lock member 1, the control rod 411 is first used to drive the rotating disk 41 to rotate inside the movable groove 21. At this time, the rotating disk 41 will exert a reverse force on the moving frame 42, so that when the moving frame 42 slides on the surface of the first slide rail 22, it can control the position of the locking block 43 and move the middle part of the bottom end of the locking block 43 so that it is no longer located between the two stoppers 31;

[0054] 2) After the gear adjustment is completed, the position of the locking member 1 can be adjusted by using the gear sleeve 23 to slide on the surface of the main body 3. When the gear sleeve 23 moves, the inclined surface of the locking block 43 moves in a certain moving direction and acts in the opposite direction on the locking block 43, so that the locking block 43 presses the spring 46 to compress it when moving. The elasticity of the spring 46 enables the locking block 43 to be reset between the two blocks 31 after the gear adjustment is completed;

[0055] 3) Locking is performed, and the lifting block 55 and the lifting frame 53 are driven to move together by the screw rod 52, so that the lifting frame 53 pushes the movable rod 44 and the moving block 45 to move together, so that the distance between the circular plate 441 and the locking block 43 is reduced, and the elastic force applied to the locking block 43 by the spring 46 is increased, so that the locking block 43 can firmly abut the main body 3, thereby completing the initial locking. When the lifting frame 53 is raised or lowered, the gear 541 is driven by the force of the rack 25 to drive the threaded rod 544 to rotate, and the moving sleeve 543 will also slide on the surface of the sliding rod 546 under the action of the internal thread, and then the locking rod 545 is pushed to insert into the positioning groove 421, so as to complete the horizontal restriction and secondary locking of the moving frame 42;

[0056] 4) Precise direction adjustment: when the second handle 62 drives the swing frame 61 to move, the inner push block 611 can exert force on the ratchet 63, so that the rotating rod 64 can drive the locking member 1 to rotate, and the angle of each rotation can be controlled by the arc of rotation of the swing frame 61.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ISOFIX assembly for a child safety seat with multiple strong locks, comprising a locking member (1), a fixing frame (2) and a main body (3), wherein one end of the locking member (1) is rotatably connected to two buckles (11) on the inner side, a plurality of stoppers (31) are evenly distributed on the surface of the main body (3), and a sliding groove (32) is provided at the bottom of the main body (3), characterized in that: A gear shifting assembly (4) is installed on one side of the fixing frame (2), a control mechanism (5) is installed on the inner side of the fixing frame (2), a rotating mechanism (6) is installed on the bottom of the fixing frame (2), a movable groove (21) is opened on one side of the fixing frame (2), and a gear position sliding sleeve (23) is fixedly connected to the bottom end of the fixing frame (2), and the gear position sliding sleeve (23) is slidably connected to the main body (3); The gear shifting assembly (4) comprises a movable frame (42) and a locking block (43); the movable frame (42) is slidably connected to the first slide rail (22); a mounting groove (422) is provided at one end of the movable frame (42); one end of the locking block (43) is slidably connected to the mounting groove (422); one end of the locking block (43) is fixedly connected to a spring (46); a circular plate (441) is slidably connected to the top of the inner cavity of the mounting groove (422); a movable rod (44) is fixedly connected to the top of the circular plate (441); a rotating disk (41) is installed inside the movable groove (21); a control rod (411) is fixedly connected to one side of the rotating disk (41); one end of the control rod (411) passes through the movable frame (42); the control rod (411) is fixedly connected to the movable frame (42); and the bottom end of the locking block (43) is located between the two stoppers (31); The control mechanism (5) comprises a screw rod (52), one end of which is rotatably connected to the fixed frame (2), and the other end of which is rotatably connected to the top of the gear sliding sleeve (23), a lifting block (55) is threadedly connected to the surface of the screw rod (52), one end of which is fixedly connected to the lifting frame (53), and a positioning member (54) is installed in the middle of one end of the lifting frame (53).

2. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 1, characterized in that: A positioning groove (421) is provided on one side of the movable frame (42); a track (531) is fixedly connected to the bottom of the lifting frame (53); a movable block (45) is slidably connected to the surface of the track (531); and the bottom of the movable block (45) is fixedly connected to the top of the movable rod (44).

3. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 2, characterized in that: The positioning member (54) comprises a movable sleeve (543) and a threaded rod (544); one end of the threaded rod (544) is rotatably connected to the lifting frame (53); the movable sleeve (543) is threadedly connected to the threaded rod (544); a sliding rod (546) is fixedly connected to the inner cavity of the lifting frame (53); and the sliding rod (546) is slidably connected to the movable sleeve (543).

4. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 3, characterized in that: A gear (541) is fixedly connected to the outer surface of one end of the threaded rod (544), a locking rod (545) is fixedly connected to one end of the moving sleeve (543), the diameter of a through hole on one side of the lifting frame (53) is smaller than the outer diameter of the moving sleeve (543), and one end of the locking rod (545) is plugged into the positioning groove (421).

5. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 4, characterized in that: One end of the lifting block (55) is fixedly connected to a first limit block (551), the first limit block (551) is slidably connected to the fixing frame (2), the top end of the screw rod (52) passes through the fixing frame (2), and the top of the screw rod (52) is connected to a first handle (51).

6. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 5, characterized in that: The side wall of the fixed frame (2) is fixedly connected with a mounting frame (24), the mounting frame (24) is located outside the lifting frame (53), and a limiting hole (26) is provided on one side of the mounting frame (24), the inner wall of the mounting frame (24) is fixedly connected with a rack (25), the rack (25) is meshingly connected with a gear (541), a limiting rod (542) is slidably connected inside the limiting hole (26), one end of the limiting rod (542) is fixedly connected with the gear (541), and the diameter of the other end of the limiting rod (542) is larger than the width of the limiting hole (26), and a guide block (231) is slidably connected inside the sliding groove (32), and the top of the guide block (231) is fixedly connected with the bottom of the gear sliding sleeve (23).

7. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 6, characterized in that: The rotating mechanism (6) comprises a fixed block (65), the fixed block (65) being fixedly connected to the bottom of the fixed frame (2), and one end of the fixed block (65) being rotatably connected to a rotating rod (64), the middle outer surface of the rotating rod (64) being fixedly connected to a lifting frame (53), and the bottom of the rotating rod (64) being fixedly connected to the top of one end of the locking member (1).

8. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 7, characterized in that: The outer surface of the rotating rod (64) is movably sleeved with a swing frame (61), one end of the swing frame (61) is rotatably connected to the inner side with a push block (611), and one end of the swing frame (61) is fixedly connected to a second handle (62).

9. The multi-stage strong lock ISOFIX assembly of the child safety seat according to claim 8, characterized in that: One end of the fixed block (65) is fixedly connected to a support frame (66), the inner side of the support frame (66) is rotatably connected to a swing block (67), one end of the swing block (67) is fixedly connected to a second limit block (671), and the second limit block (671) abuts against the ratchet (63).

10. A method for adjusting and locking the ISOFIX assembly of a child safety seat with multiple strong locks, characterized in that: The ISOFIX assembly using the multi-stage strong lock of the child safety seat according to any one of claims 1 to 9 comprises the following steps: S1, unlocking, after determining the moving direction of the lock member (1), first use the control rod (411) to drive the rotating disk (41) to rotate inside the movable groove (21), at which time the rotating disk (41) will exert a reverse force on the movable frame (42), so that when the movable frame (42) slides on the surface of the first slide rail (22), it can control the position of the locking block (43) and move the middle part of the bottom end of the locking block (43) so that it is no longer located between the two stoppers (31); S2, after the gear adjustment is completed, the position of the locking member (1) can be adjusted by using the gear sleeve (23) to slide on the surface of the main body (3). When the gear sleeve (23) moves, the inclined surface of the locking block (43) moves in a certain moving direction and acts in the opposite direction on the locking block (43), so that the locking block (43) presses the spring (46) to compress it when moving. The elasticity of the spring (46) enables the locking block (43) to be reset between the two blocks (31) after the gear adjustment is completed; S3, locking is performed, using the screw rod (52) to drive the lifting block (55) and the lifting frame (53) to move together, so that the lifting frame (53) pushes the movable rod (44) and the moving block (45) to move together, so that the distance between the circular plate (441) and the locking block (43) is reduced, so that the elastic force applied to the locking block (43) by the spring (46) is increased, so that the locking block (43) can firmly abut the main body (3), thereby completing the initial locking. When the lifting frame (53) is raised or lowered, the gear (541) is driven by the force of the rack (25) to drive the threaded rod (544) to rotate, and the moving sleeve (543) will slide on the surface of the sliding rod (546) under the action of the internal thread, and then the locking rod (545) is pushed to insert into the positioning groove (421), thereby completing the horizontal restriction and secondary locking of the moving frame (42); S4, precise direction adjustment, when the second handle (62) drives the swing frame (61) to move, the inner push block (611) can exert a force on the ratchet (63), so that the rotating rod (64) can drive the locking member (1) to rotate, and the angle of each rotation can be controlled by the arc of rotation of the swing frame (61).

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