Magnetic two-way lock mechanism

Abstract

The present invention discloses a magnetic two-way lock mechanism, comprising an ISOFIX component arranged on a child safety seat, a power supply component and an ISOFIX fixing bracket arranged on a base and connected to a seat body, the ISOFIX component can move forward and backward along the ISOFIX fixing bracket, the ISOFIX fixing bracket is provided with one of a suction plate and an electromagnetic plate, the other of the suction plate and the electromagnetic plate is arranged on the ISOFIX component, when the ISOFIX component moves forward and backward relative to the ISOFIX fixing bracket, the electromagnetic plate and the suction plate can be relatively arranged to be attracted or the electromagnetic plate and the suction plate can be separated, and the power supply component is electrically connected to the electromagnetic plate. Compared with the traditional mechanical two-way lock, the magnetic two-way lock mechanism disclosed by the present invention is faster and more convenient to install a seat.

Description

Technical Field

[0001] The invention relates to a child safety seat, and in particular to a magnetic two-way locking mechanism. Background Art

[0002] A child safety seat is a restraint device used in cars to protect children's safety. When the car suddenly changes speed or an accident occurs, the child safety seat can keep the child in the car seat to limit the child's displacement, thereby reducing injuries to the child.

[0003] ISOFIX fixtures are commonly used in child safety seats; ISOFIX fixtures are internationally used rigid interfaces, and Chinese regulations also include this interface specification in passenger restraint system regulations. Child safety seats with ISOFIX fixtures include two ISOFIX connectors at one end, an upper strap connector or a support leg; accordingly, there are two ways to install child safety seats on vehicles, namely, using the ISOFIX lower fixing point and upper strap fixing point on the vehicle for installation; or using the ISOFIX lower fixing point on the vehicle and the support leg of the child seat for fixing.

[0004] However, existing ISOFIX connectors are directly installed on the safety seat base and are pulled out for installation when needed. In order to solve the problem of the ISOFIX connectors moving back after being pulled out, traditional seats use a mechanical two-way lock mechanism. This mechanical two-way lock requires manual unlocking after locking. Therefore, after the seat is fixedly connected to the car, the unlocking switch needs to be manually pressed to push the seat in to fit the car seat. This has the problems of many operating steps and inconvenient installation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a magnetic two-way lock mechanism, which can prevent the ISOFIX connector from retreating and facilitate installation.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A magnetic two-way locking mechanism comprises an ISOFIX component arranged on a child safety seat, a power supply component and an ISOFIX fixing bracket arranged on a base and connected to a seat body, wherein the ISOFIX component can move forward and backward along the ISOFIX fixing bracket, the ISOFIX fixing bracket is provided with one of a suction plate and an electromagnetic plate, the other of the suction plate and the electromagnetic plate is arranged on the ISOFIX component, and when the ISOFIX component moves forward and backward relative to the ISOFIX fixing bracket, the electromagnetic plate and the suction plate can be relatively attracted or separated, and the power supply component is electrically connected to the electromagnetic plate.

[0008] Preferably, one of the suction plate and the electromagnetic plate is arranged at the rear side of the ISOFIX fixing bracket, the other of the suction plate and the electromagnetic plate is arranged in the middle of the component, and the suction plate and the electromagnetic plate are arranged opposite to each other.

[0009] Preferably, the electromagnetic plate is arranged on the ISOFIX fixing bracket, a trigger switch for cutting off the power supply circuit of the electromagnetic plate is arranged in the interface connecting the ISOFIX component and the car seat, and the suction plate includes a power-on signal switch arranged on the suction plate;

[0010] When the ISOFIX assembly moves forward and backward relative to the ISOFIX fixing bracket so that the power-on signal switch abuts against the electromagnetic plate, the power supply circuit of the electromagnetic plate is turned on to attract the suction plate to prevent the ISOFIX assembly from moving forward and backward;

[0011] When the interface of the ISOFIX component is engaged with the ISOFIX anchor point of the car seat, the trigger switch located in the interface is triggered to cut off the power supply circuit of the electromagnetic plate, thereby releasing the lock between the ISOFIX component and the ISOFIX fixing bracket.

[0012] Preferably, the ISOFIX component is provided with a gear shaft extending left and right, and the ISOFIX fixing bracket is provided with a first slide groove and a gear groove connected to the first slide groove on both sides of the gear shaft, and the two ends of the gear shaft respectively extend into the gear groove or respectively extend into the first slide groove, so as to lock the position of the ISOFIX component relative to the ISOFIX fixing bracket, or release the lock between the ISOFIX component and the ISOFIX fixing bracket.

[0013] Preferably, the ISOFIX fixing bracket is provided with a second sliding groove or notch extending in the horizontal direction for the two ends of the ISOFIX component to extend out, and the ISOFIX component is provided with a limit member for preventing the ISOFIX component from shaking left and right relative to the ISOFIX fixing bracket.

[0014] Preferably, the limiting member is a limiting plate fixed on the ISOFIX assembly, the limiting plate is located on the outside of the ISOFIX fixing bracket or on the inside of the ISOFIX fixing bracket, the ISOFIX fixing bracket is provided with a third sliding groove extending in a horizontal direction above the second sliding groove or the notch, and a limiting pin is provided on the limiting plate, extending into the third sliding groove and moving forward and backward along the third sliding groove.

[0015] Preferably, a mounting groove is provided on the side of the suction plate close to the electromagnetic plate, the power-on signal switch is arranged in the mounting groove, and the head of the power-on signal switch protrudes from the mounting groove. When the ISOFIX assembly moves relative to the ISOFIX fixing bracket so that the electromagnetic plate abuts against the power-on signal switch, the head of the power-on signal switch can be retracted to be flush with the opening of the mounting groove, and the electromagnetic plate is energized to attract the suction plate.

[0016] Preferably, a mounting bracket is provided on the ISOFIX component, and a mounting hole communicating with the mounting groove is provided on the mounting bracket, and the tail of the power-on signal switch extends out of the mounting hole and is connected to the power supply component through a wire.

[0017] Preferably, a positioning protrusion for positioning the suction plate is provided on the mounting frame.

[0018] Preferably, the ISOFIX fixing bracket includes a left bracket and a right bracket which are symmetrically arranged, one end of the electromagnetic plate is detachably connected to the left bracket, and the other end of the electromagnetic plate is detachably connected to the right bracket.

[0019] Preferably, the surfaces where the electromagnetic plate and the suction plate are attracted to each other extend longitudinally and are perpendicular to the movement direction of the ISOFIX assembly.

[0020] Compared with the prior art, the advantage of the magnetic two-way lock mechanism of the present invention is that when a child safety seat with an ISOFIX component is fixed on a car seat, when the user pulls the ISOFIX component outward, the suction plate fixed on the ISOFIX component moves outward with the ISOFIX component, and when the suction plate contacts the electromagnetic plate on the ISOFIX fixing bracket, the power-on signal switch is triggered, and the suction plate is firmly sucked by the electromagnetic plate at this time, and the ISOFIX component cannot move forward and backward and is stopped. When the user locks the ISOFIX interface hooks on the left and right sides of the ISOFIX component to the ISOFIX anchor points on the car seat, the trigger switches installed in the ISOFIX interfaces on both sides are triggered, the electromagnetic plate is instantly powered off, and the suction plate is not sucked by the electromagnetic plate, thereby releasing the stop of the ISOFIX component, and the user can easily push the seat tight. Compared with the traditional mechanical two-way lock, the seat installation is faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the explosion of the magnetic two-way lock mechanism in this embodiment;

[0022] Figure 2 The state diagram of the suction plate on the ISOFIX assembly in this embodiment when the ISOFIX assembly moves outward synchronously with the ISOFIX assembly is shown in FIG. Figure 1 ;

[0023] Figure 3 The state diagram of the suction plate on the ISOFIX assembly in this embodiment when the ISOFIX assembly moves outward synchronously with the ISOFIX assembly is shown in FIG. Figure 2 ;

[0024] Figure 4 The state diagram of the suction plate on the ISOFIX assembly in this embodiment when the ISOFIX assembly moves outward synchronously with the ISOFIX assembly is shown in FIG. Figure 3 ;

[0025] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0026] Figure 6 The state diagram of the suction plate on the ISOFIX assembly and the electromagnetic plate on the ISOFIX fixing bracket in this embodiment when they are attracted to each other is shown in FIG. Figure 1 ;

[0027] Figure 7 The state diagram of the suction plate on the ISOFIX assembly and the electromagnetic plate on the ISOFIX fixing bracket in this embodiment when they are attracted to each other is shown in FIG. Figure 2 ;

[0028] Figure 8 The state diagram of the suction plate on the ISOFIX assembly and the electromagnetic plate on the ISOFIX fixing bracket in this embodiment when they are attracted to each other is shown in FIG. Figure 3 .

[0029] In the figure, 1. ISOFIX assembly; 11. Limiting piece; 111. Limiting pin; 2. ISOFIX fixing bracket; 21. First slide slot; 22. Shift slot; 23. Second slide slot; 24. Third slide slot; 3. Suction plate; 31. Mounting slot; 4. Electromagnetic plate; 5. Power-on signal switch; 6. Mounting bracket; 61. Mounting hole; 62. Positioning protrusion; 7. Shift shaft; 8. Shift slider; 81. Inclined hole; 9. Pull strap. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] A magnetic two-way lock mechanism is arranged on a seat installation base, comprising an ISOFIX component 1 arranged on the child safety seat, a power supply component and an ISOFIX fixing bracket 2 arranged on the base and connected to the seat body, the ISOFIX component 1 can move forward and backward along the ISOFIX fixing bracket 2, the ISOFIX fixing bracket 2 is provided with one of a suction plate 3 and an electromagnetic plate 4, the other of the suction plate 3 and the electromagnetic plate 4 is arranged on the ISOFIX component 1, when the ISOFIX component 1 moves forward and backward relative to the ISOFIX fixing bracket 2, the electromagnetic plate 4 and the suction plate 3 can be relatively attracted or separated, and the power supply component is electrically connected to the electromagnetic plate 4.

[0032] Specifically, one of the suction plate 3 and the electromagnetic plate 4 is arranged on the rear side of the ISOFIX fixing bracket 2, and the other of the suction plate 3 and the electromagnetic plate 4 is arranged in the middle of the ISOFIX component 1, and the suction plate 3 and the electromagnetic plate 4 are arranged opposite to each other, so that when the ISOFIX component 1 moves forward and backward relative to the ISOFIX fixing bracket 2, the electromagnetic plate 4 can just abut against the suction plate 3.

[0033] The electromagnetic plate 4 is arranged on the ISOFIX fixing bracket 2, and a trigger switch for cutting off the power supply circuit of the electromagnetic plate 4 is arranged in the interface connecting the ISOFIX component 1 and the car seat, and a power-on signal switch 5 is arranged on the suction plate 3.

[0034] When the ISOFIX assembly 1 moves forward and backward relative to the ISOFIX fixing bracket 2 so that the power-on signal switch 5 abuts against the electromagnetic plate 4, the power supply circuit of the electromagnetic plate 4 is turned on to attract the suction plate 3 to prevent the ISOFIX assembly 1 from moving forward and backward.

[0035] When the interface of the ISOFIX component 1 engages with the ISOFIX anchor point of the car seat, the trigger switch located in the interface is triggered to cut off the power supply circuit of the electromagnetic plate 4, thereby releasing the lock between the ISOFIX component 1 and the ISOFIX fixing bracket 2.

[0036] Those skilled in the art should understand that as long as the electromagnetic plate 4 and the suction plate 3 are against each other, the power supply circuit of the electromagnetic plate 4 is turned on to achieve the attraction between the electromagnetic plate 4 and the suction plate 3, thereby limiting the forward and backward movement of the ISOFIX component 1. Here, the electromagnetic plate 4 and the suction plate 3 can be arranged relative to each other in the longitudinal direction, or can be arranged horizontally parallel, longitudinally parallel, or obliquely parallel. As long as the ISOFIX component 1 drives the suction plate 3 or the electromagnetic plate 4 to move to trigger the power-on signal switch 5, so that the power supply circuit of the electromagnetic plate 4 is turned on, the electromagnetic plate 4 can attract the suction plate 3. In this specific embodiment, the surface where the electromagnetic plate 4 and the suction plate 3 are attracted to each other extends longitudinally and is perpendicular to the movement direction of the ISOFIX component 1.

[0037] Those skilled in the art should also understand that the electromagnetic plate 4 is actually an electromagnet, so the suction plate 3 can be made of metal. Of course, if a larger suction force is required, the suction plate 3 can also be set on the electromagnet, as long as the opposite sides of the electromagnetic plate 4 and the suction plate 3 are opposite magnetic poles.

[0038] A mounting groove 31 is provided on the side of the suction plate 3 close to the electromagnetic plate 4, and the power-on signal switch 5 is arranged in the mounting groove 31. The head of the power-on signal switch 5 protrudes from the mounting groove 31. When the ISOFIX component 1 moves relative to the ISOFIX fixing bracket 2, so that the electromagnetic plate 4 abuts against the power-on signal switch 5, the head of the power-on signal switch 5 can be retracted to be flush with the opening of the mounting groove 31, and the electromagnetic plate 4 is energized to attract the suction plate 3.

[0039] Those skilled in the art should understand that the power-on signal switch 5 can also be set on the side of the suction plate 3, as long as the electromagnetic plate 4 can abut against the power-on signal switch 5 and trigger the power-on signal switch 5, the electromagnetic plate 4 can suck the suction plate 3.

[0040] The ISOFIX assembly 1 is provided with a mounting frame 6, and a mounting hole 61 is provided on the mounting frame 6, which is connected to the mounting groove 31. The tail of the power-on signal switch 5 extends out of the mounting hole 61 and is connected to the power assembly through a wire. In addition, a positioning protrusion 62 is provided on the mounting frame 6, which plays a certain positioning role when the staff installs the suction plate 3, so as to improve the installation efficiency of the suction plate 3.

[0041] The ISOFIX component 1 is provided with a gear shaft 7 extending left and right, and the ISOFIX fixing bracket 2 is provided with a first slide groove 21 and a gear groove 22 connected to the first slide groove 21 on both sides of the gear shaft 7. The two ends of the gear shaft 7 are respectively extended into the gear groove 22 or the first slide groove 21, so as to lock the position of the ISOFIX component 1 relative to the ISOFIX fixing bracket 2, or release the lock between the ISOFIX component 1 and the ISOFIX fixing bracket 2.

[0042] Specifically, the ISOFIX component 1 is provided with a gear slider 8, and the two ends of the gear shaft 7 extend out of the inclined holes 81 arranged at the two ends of the gear slider 8 and then engage in the gear groove 22. The end of the gear slider 8 is also provided with a through hole for fixedly connecting with one end of the pull strap 9, and the other end of the pull strap 9 extends out of the outside of the interface of the ISOFIX component 1. The gear slider 8 is also provided with a return spring that drives the gear shaft 7 to move upward and engage in the gear groove 22.

[0043] The ISOFIX fixing bracket 2 is provided with a second sliding groove 23 or a notch extending in the horizontal direction for the two ends of the ISOFIX component 1 to extend out. The ISOFIX component 1 is provided with a limit member 11 for preventing the ISOFIX component 1 from shaking left and right relative to the ISOFIX fixing bracket 2.

[0044] The limiting member 11 is a limiting plate fixed on the ISOFIX assembly 1, the limiting plate is located on the outside of the ISOFIX fixing bracket 2 or on the inside of the ISOFIX fixing bracket 2, the ISOFIX fixing bracket 2 is provided with a third sliding groove 24 extending in the horizontal direction above the second sliding groove 23 or the notch, and a limiting pin 111 is provided on the limiting plate, extending into the third sliding groove 24 and moving forward and backward along the third sliding groove 24. Specifically, the limiting pin 111 is a bolt that passes through the third sliding groove 24 and is connected to the limiting plate.

[0045] The ISOFIX fixing bracket 2 includes a symmetrically arranged left bracket and a right bracket, one end of the electromagnetic plate 4 is detachably connected to the left bracket, and the other end of the electromagnetic plate 4 is detachably connected to the right bracket, so as to facilitate the replacement of the electromagnetic plate 4 during the production process or when the electromagnetic plate 4 is damaged.

[0046] Compared with the prior art, the advantage of the magnetic two-way lock mechanism of the present invention is that when the child safety seat with the ISOFIX component 1 is fixed on the car seat, when the user pulls the ISOFIX component 1 outward, the suction plate 3 fixed on the ISOFIX component 1 moves outward with the ISOFIX component 1, and when the suction plate 3 contacts the electromagnetic plate 4 on the ISOFIX fixing bracket 2, the power-on signal switch 5 is triggered, and the suction plate 3 is firmly sucked by the electromagnetic plate 4 at this time, and the ISOFIX component 1 cannot move forward and backward and is stopped. When the user locks the ISOFIX interface hooks on the left and right sides of the ISOFIX component 1 to the ISOFIX anchor points on the car seat, the trigger switches installed in the ISOFIX interfaces on both sides are triggered, and the electromagnetic plate 4 is instantly powered off, and the suction plate 3 is not sucked by the electromagnetic plate 4, thereby releasing the stop of the ISOFIX component 1, and the user can easily push the seat tight. Compared with the traditional mechanical two-way lock, the magnetic two-way lock mechanism of the present invention is faster and more convenient to install.

[0047] Although the preferred embodiments of the present invention are described in detail above, it should be clearly understood that various modifications and variations are possible for those skilled in the art. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Magnetic two-way lock mechanism, characterized by: The invention comprises an ISOFIX component (1) arranged on a child safety seat, a power supply component and an ISOFIX fixing bracket (2) arranged on a base and connected to a seat body, wherein the ISOFIX component (1) can move forward and backward along the ISOFIX fixing bracket (2), the ISOFIX fixing bracket (2) is provided with one of a suction plate (3) and an electromagnetic plate (4), the other of the suction plate (3) and the electromagnetic plate (4) is arranged on the ISOFIX component (1), and when the ISOFIX component (1) moves forward and backward relative to the ISOFIX fixing bracket (2), the electromagnetic plate (4) and the suction plate (3) can be relatively attracted or disengaged, and the power supply component is electrically connected to the electromagnetic plate (4).

2. The magnetic two-way lock mechanism according to claim 1, characterized in that: One of the suction plate (3) and the electromagnetic plate (4) is arranged at the rear side of the ISOFIX fixing bracket (2), the other of the suction plate (3) and the electromagnetic plate (4) is arranged at the middle of the ISOFIX assembly (1), and the suction plate (3) and the electromagnetic plate (4) are arranged opposite to each other.

3. The magnetic two-way lock mechanism according to claim 1, characterized in that: The electromagnetic plate (4) is arranged on the ISOFIX fixing bracket (2); a trigger switch for cutting off the power supply circuit of the electromagnetic plate (4) is arranged in the interface where the ISOFIX component (1) is connected to the car seat; and the suction plate (3) comprises a suction plate body and a power-on signal switch (5) arranged on the suction plate body; When the ISOFIX component (1) moves forward and backward relative to the ISOFIX fixing bracket (2) so that the power-on signal switch (5) abuts against the electromagnetic plate (4), the power supply circuit of the electromagnetic plate (4) is turned on to attract the suction plate (3) to prevent the ISOFIX component (1) from moving forward and backward; When the interface of the ISOFIX component (1) engages with the ISOFIX anchor point of the car seat, a trigger switch located in the interface is triggered to cut off the power supply circuit of the electromagnetic plate (4), thereby releasing the lock between the ISOFIX component (1) and the ISOFIX fixing bracket (2).

4. The magnetic two-way lock mechanism according to claim 2, characterized in that: The ISOFIX component (1) is provided with a gear shaft (7) extending leftward and rightward, and the ISOFIX fixing bracket (2) is provided with a first slide groove (21) and a gear groove (22) connected to the first slide groove (21) on both sides of the gear shaft (7), and the two ends of the gear shaft (7) are respectively extended into the gear groove (22) or respectively extended into the first slide groove (21), so as to lock the position of the ISOFIX component (1) relative to the ISOFIX fixing bracket (2), or release the lock between the ISOFIX component (1) and the ISOFIX fixing bracket (2).

5. The magnetic two-way lock mechanism according to claim 3, characterized in that: A mounting groove (31) is provided on a side surface of the suction plate (3) close to the electromagnetic plate (4); the power-on signal switch (5) is arranged in the mounting groove (31); a head portion of the power-on signal switch (5) protrudes from the mounting groove (31); when the ISOFIX assembly (1) moves relative to the ISOFIX fixing bracket (2) so that the electromagnetic plate (4) abuts against the power-on signal switch (5), the head portion of the power-on signal switch (5) can be retracted to be flush with an opening of the mounting groove (31), and the electromagnetic plate (4) is energized to attract the suction plate (3).

6. The magnetic two-way lock mechanism according to claim 5, characterized in that: The ISOFIX assembly (1) is provided with a mounting frame (6), the mounting frame (6) being provided with a mounting hole (61) communicating with the mounting groove (31), and the tail of the power-on signal switch (5) extends out of the mounting hole (61) and is connected to the power supply assembly via a wire.

7. The magnetic two-way lock mechanism according to claim 6, characterized in that: The mounting frame (6) is provided with a positioning protrusion (62) for positioning the suction plate (3).

8. The magnetic two-way lock mechanism according to claim 3, characterized in that: The ISOFIX fixing bracket (2) comprises a left bracket and a right bracket which are symmetrically arranged, one end of the electromagnetic plate (4) is detachably connected to the left bracket, and the other end of the electromagnetic plate (4) is detachably connected to the right bracket.

9. The magnetic double lock mechanism according to claim 1, characterized in that: The surfaces where the electromagnetic plate (4) and the suction plate (3) are attracted to each other extend longitudinally and are perpendicular to the movement direction of the ISOFIX assembly (1).

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