Control system for a safety belt, child carrier and its passenger compartment

Abstract

The present application relates to a safety belt control system, a child carrier and a passenger cabin thereof. The safety belt control system comprises: a retractor connected with a safety belt; a safety belt driving device engaged with the safety belt and capable of driving the safety belt to move in a retraction movement or an extension movement to allow the safety belt to be wound onto the retractor or unwound from the retractor; a buckle state detector for detecting a state of a first buckle mounted on the safety belt to send a buckle locking signal or a buckle releasing signal; a controller in communication with the safety belt driving device and the buckle state detector; wherein when the controller receives the buckle locking signal, the safety belt driving device is controlled to drive the safety belt to move in the retraction movement; or when the controller receives the buckle releasing signal, the safety belt driving device is controlled to drive the safety belt to move in the extension movement.

Description

Technical Field

[0001] This invention relates to a seat belt control system, a child vehicle, and a passenger cabin thereof. Background Technology

[0002] Existing child safety seats typically have shoulder straps that extend from the front of the seat. To secure a child in the seat, the user first engages the shoulder strap buckle with the seat buckle or the crotch strap buckle, then manually pulls the end of the shoulder strap to tension it. The tension is maintained by a shoulder strap clamp that locks the strap in place. To release the child from the seat, the user presses the shoulder strap clamp with one hand and pulls the shoulder strap with the other to loosen it, then releases the buckle to allow the child to leave the seat. Summary of the Invention

[0003] This invention aims to provide a seatbelt control system that simplifies the process of passengers entering and exiting a seatbelt-equipped passenger compartment. This invention also provides a child vehicle and its passenger compartment.

[0004] In one aspect, the present invention provides a control system for a seat belt, comprising: a retractor connected to the seat belt; a seat belt drive device engaged with the seat belt and capable of driving the seat belt to perform a tightening or extending movement, allowing the seat belt to wind onto or unwind from the retractor; a buckle status detector for detecting the status of a first buckle mounted on the seat belt to issue a buckle locking signal or a buckle releasing signal; and a controller communicatively connected to the seat belt drive device and the buckle status detector; wherein, when the controller receives the buckle locking signal, it controls the seat belt drive device to drive the seat belt to perform a tightening movement; or when the controller receives the buckle releasing signal, it controls the seat belt drive device to drive the seat belt to perform an extending movement.

[0005] Furthermore, the control system of the seat belt also includes a clamp for clamping the seat belt, the clamp being communicatively connected to the controller, the controller being used to control the clamp to release the clamp from the seat belt and to restore the clamp on the seat belt.

[0006] Furthermore, the clamp is an electromagnetic clamp; wherein, when the controller receives the buckle locking signal or the buckle releasing signal, it controls the clamp to release the clamp on the seat belt; when the seat belt tightens or extends to a predetermined extent during the tightening movement or the extending movement, the controller controls the seat belt driving device to stop driving the seat belt and controls the clamp to resume clamping the seat belt.

[0007] Further, the clamping device comprises a bearing part, a locking part, a first elastic element, and an electromagnetic suction device; the bearing part and the locking part form a channel for the safety belt to pass through; the first elastic element is used to keep the locking part in a locking state of abutting against the bearing part to clamp the safety belt; the electromagnetic suction device is in communication with the controller and is used to apply a magnetic suction force to the locking part to make the locking part disengage from the bearing part.

[0008] Further, the locking part comprises a first bending part and a second bending part connected with each other, and a pivot shaft is arranged at the connection between the first bending part and the second bending part; the first elastic element is used to apply a force to the first bending part to make the first bending part abut against the bearing part, and the electromagnetic suction device is used to apply a magnetic suction force to the second bending part to make the first bending part disengage from the bearing part.

[0009] Further, at least a part of the second bending part is exposed for manual operation; and / or, the first bending part is provided with a tooth for contacting the safety belt.

[0010] Further, the control system of the safety belt further comprises a tension sensor for detecting the tension of the safety belt, and the tension sensor is in communication with the controller; when the safety belt is in a tightening movement, and the tension sensor detects that the tension of the safety belt is greater than a predetermined threshold, the controller controls the safety belt driving device to stop driving the safety belt.

[0011] Further, the retractor comprises a winding shaft; the safety belt is a shoulder belt of a child safety seat, a first end of the shoulder belt is connected with the winding shaft, and a second end of the shoulder belt is provided with the first buckle, which is used to cooperate with a second buckle of a crotch belt of the child safety seat; the tension sensor is arranged between the shoulder belt and a seat body of the child safety seat, or between the crotch belt and the seat body of the child safety seat.

[0012] Further, the seat body of the child safety seat is provided with a safety belt guiding structure.

[0013] Further, when the controller receives the buckle release signal, the safety belt driving device is controlled to drive the safety belt to move a predetermined length in the extension direction of the safety belt.

[0014] Further, the safety belt driving device comprises at least two rolling wheels, a clamping channel is formed between the at least two rolling wheels for the safety belt to pass through; and a first rotating driving mechanism in communication with the controller and used to drive at least one of the rolling wheels to rotate.

[0015] Further, when the controller receives the buckle release signal, the controller controls the clamp to release the clamping of the safety belt, controls the first rotation driving mechanism to drive the at least one rolling wheel to rotate a first predetermined number of turns, so that the safety belt moves a predetermined length in the extension direction of the safety belt, and then controls the clamp to resume the clamping of the safety belt.

[0016] Further, the safety belt driving device comprises a linear driving mechanism, the linear driving mechanism is in communication connection with the controller, and an output end of the linear driving mechanism is connected with the safety belt.

[0017] Further, when the controller receives the buckle release signal, the controller controls the clamp to release the clamping of the safety belt, controls the linear driving mechanism to drive the output end of the linear driving mechanism to drive the safety belt to move a predetermined length in the extension direction of the safety belt, and then controls the clamp to resume the clamping of the safety belt.

[0018] Further, the retractor comprises a winding shaft and a second rotation driving mechanism connected with the winding shaft, the second rotation driving mechanism is in communication connection with the controller, when the controller receives the buckle locking signal, the controller controls the second rotation driving mechanism to drive the winding shaft to rotate in the winding direction of the safety belt, and when the controller receives the buckle release signal, the controller controls the second rotation driving mechanism to drive the winding shaft to rotate in the unwinding direction of the safety belt.

[0019] Further, when the controller receives the buckle release signal, the controller controls the clamp to release the clamping of the safety belt, controls the second rotation driving mechanism to drive the winding shaft to rotate a second predetermined number of turns in the unwinding direction of the safety belt, and then controls the clamp to resume the clamping of the safety belt.

[0020] Further, the retractor comprises a winding shaft and a second elastic member, the second elastic member applies a force to the winding shaft to rotate the winding shaft in the winding direction of the safety belt.

[0021] In another aspect, the present application also provides a passenger cabin of a child carrier, wherein the passenger cabin is provided with the safety belt control system as described above, and the retractor and the safety belt driving device are arranged in a seat body of the passenger cabin.

[0022] Further, the passenger cabin is a child safety seat.

[0023] In yet another aspect, the present application also provides a child carrier comprising the passenger cabin of a child carrier as described above.

[0024] The control system of the safety belt provided by the application is taken as an example of application to the child carrier, when the first buckle of the safety belt is locked with the matched other buckle, under the control of the controller, the safety belt can be automatically tightened to the seat body to make the safety belt tensioned, so as to bind the child in the seat body of the child carrier, and the length of the safety belt is automatically shortened when the child is seated; when the first buckle of the safety belt is released from the matched other buckle, under the control of the controller, the safety belt can be automatically released to the seat body to make the safety belt relaxed, so that the child can be conveniently released from the safety belt and moved out of the seat body, and the length of the safety belt is automatically extended when the child is seated. Thus, the control system of the safety belt provided by the application greatly simplifies the operation of the child seating and leaving. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structural diagram of the control system of the safety belt provided by the first embodiment of the application is schematically shown, wherein the first buckle of the safety belt is in the locked state;

[0026] Figure 2 The structural diagram of the control system of the safety belt provided by the first embodiment of the application is schematically shown, wherein the first buckle of the safety belt is in the released state;

[0027] Figure 3 The module diagram of the control system of the safety belt provided by the first embodiment of the application is schematically shown;

[0028] Figure 4 The structural diagram of the control system of the safety belt provided by the second embodiment of the application is schematically shown, wherein the first buckle of the safety belt is in the locked state;

[0029] Figure 5 The structural diagram of the control system of the safety belt provided by the second embodiment of the application is schematically shown, wherein the first buckle of the safety belt is in the released state;

[0030] Figure 6 The structural diagram of the control system of the safety belt provided by the third embodiment of the application is schematically shown, wherein the first buckle of the safety belt is in the locked state;

[0031] Figure 7 The structural diagram of the control system of the safety belt provided by the third embodiment of the application is schematically shown, wherein the first buckle of the safety belt is in the released state;

[0032] Figure 8 The module diagram of the control system of the safety belt provided by the third embodiment of the application is schematically shown;

[0033] Figure 9A schematic structural diagram of a control system of a safety belt according to the fourth embodiment of the present application is shown, wherein the first buckle of the safety belt is in the locked state;

[0034] Figure 10 A schematic module diagram of a control system of a safety belt according to the fourth embodiment of the present application is shown, wherein the first buckle of the safety belt is in the released state;

[0035] Figure 11 A schematic module diagram of a control system of a safety belt according to the fourth embodiment of the present application is shown; and

[0036] Figure 12 A schematic module diagram of a control system of a safety belt according to the fifth embodiment of the present application is shown. DETAILED DESCRIPTION

[0037] First embodiment

[0038] Referring to Figure 1 and Figure 2 , a schematic structural diagram of a control system of a safety belt according to the first embodiment of the present application is shown, which can be applied to any type of vehicle that needs to bind a passenger in a seat, for example, can be applied to but not limited to the passenger cabin 1000 of a child vehicle, for example, can be a child safety seat, which has a seat body 100 for binding a child in it. In combination with reference to Figures 1 to 3 , the control system of the safety belt can include a retractor 1, a safety belt 21, a safety belt driving device 3, a buckle state detector 4, and a controller 5.

[0039] Referring to Figure 1 and Figure 2The retractor 1 can be provided in the seat body 100, and the retractor 1 and the safety belt 21 are connected, and the retractor 1 can wind the safety belt 21 or release the safety belt 21. The retractor 1 can have a winding shaft (or can be referred to as a winding drum) 11, for example. The safety belt 21 can be a shoulder belt, and a first end 211 of the safety belt 21 is connected to the winding shaft 11, for example, so that the first end 211 of the safety belt 21 can be hidden in the seat body 100. A second end 212 of the safety belt 21 can be provided with a first buckle 81. Of course, in other embodiments, the safety belt 21 can be a waist belt, for example. In the present embodiment, the first buckle 81 is used to cooperate with a second buckle 82 on a lap belt 22 of the passenger cabin 1000. The winding shaft 11 can rotate in a winding direction T1 of the safety belt 21 or a releasing direction T2 of the safety belt 21. In some embodiments, the winding shaft 11 can be drivingly connected to a second rotation driving mechanism 12, which includes a motor, for example. The motor outputs power to the winding shaft 11 to make the winding shaft 11 rotate. It can be understood that, for example, by controlling the output shaft of the motor to rotate forward or reverse, the winding shaft 11 is made to rotate in the winding direction T1 or the releasing direction T2, so that the safety belt 21 is wound on the winding shaft 11 or released outward from the winding shaft 11. It should be noted that when the safety belt 21 is wound on the winding shaft 11, the length of the safety belt 21 exposed from the seat body 100 becomes shorter, and at this time, corresponding to the tightening movement of the safety belt 21, the tightening movement direction of the safety belt 21 is shown in the arrow M1 in the figure. When the safety belt 21 is released from the winding shaft 11, the length of the safety belt 21 exposed from the seat body 100 becomes longer, and at this time, corresponding to the extension movement of the safety belt 21, the extension movement direction of the safety belt 21 is shown in the arrow M2 in the figure. Figure 1 Figure 2

[0040] Referring to Figure 1 The safety belt driving device 3 can be provided in the seat body 100, and the safety belt driving device 3 is engaged with the safety belt 21 and can drive the safety belt 21 to make a tightening movement or an extension movement, so as to allow the safety belt 21 to be wound on the winding shaft 11 of the retractor 1 or released from the winding shaft 11 of the retractor 1. The safety belt driving device 3 can adopt any suitable structure, and some embodiments of the safety belt driving device 3 are exemplified below.

[0041] Referring to Figure 1 and Figure 3 ​​The buckle state detector 4 is used to detect the state of the first buckle 81 installed on the safety belt 21. The buckle state detector 4 can be installed on the first buckle 81 and / or the second buckle 82, or any suitable position on the seat body 100. When the first buckle 81 is in the locked state with the second buckle 82, the buckle state detector 4 can detect that the first buckle 81 and the second buckle 82 are in the locked state, and send a buckle locking signal. When the first buckle 81 is in the unlocked state with the second buckle 82, the buckle state detector 4 can detect that the first buckle 81 and the second buckle 82 are in the unlocked state, and send a buckle unlocking signal.

[0042] Referring to Figures 1 to 3 The controller 5 can be communicatively connected with the safety belt driving device 3, the buckle state detector 4, and the second rotation driving mechanism 12. The controller 5 can be arranged in the seat body 100 or any other suitable position. When the controller 5 receives the buckle locking signal, it controls the safety belt driving device 3 to drive the safety belt 21 to move inwards and be reeled on the reel shaft 11 in the reeling direction T1 of the safety belt 21, so that the exposed length of the safety belt 21 is shortened, the safety belt 21 is tightened, and the child is restrained in the seat body of the passenger cabin 100, and the safety belt 21 is adjusted to a suitable tension. When the controller 5 receives the buckle unlocking signal, it controls the safety belt driving device 3 to drive the safety belt 21 to move outwards, and controls the second rotation driving mechanism 12 to drive the reel shaft 11 to rotate in the unwinding direction T2 of the safety belt 21, so that the exposed length of the safety belt 21 is lengthened, and the safety belt 21 is loosened, so as to conveniently release the restraint of the child by the safety belt 21, and conveniently remove the child from the seat body 100.

[0043] The safety belt control system of the first embodiment of the present application can be applied to a child carrier. When the first buckle 81 of the safety belt 21 is locked with the second buckle 82 of the crotch belt 22, under the control of the controller 5, the safety belt 21 is automatically reeled inwards into the seat body 100 and reeled on the reel shaft 11, so that the safety belt 21 is tightened, and the child is restrained in the seat body 100, thereby achieving automatic length adjustment of the safety belt 21 when the child is seated. When the first buckle 81 of the safety belt 21 is unlocked with the second buckle 82 of the crotch belt 22, under the control of the controller 5, the safety belt 21 is automatically unwound outwards from the seat body 100, so that the safety belt 21 is loosened, and the restraint of the child by the safety belt 21 is conveniently released, and the child is conveniently removed from the seat body 100, thereby achieving automatic length adjustment of the safety belt 21 when the child is seated. The safety belt control system of the first embodiment of the present application greatly simplifies the operation of the child seating and getting off.

[0044] Referring to Figures 1 to 3In some embodiments, the control system of the safety belt can further comprise a clamp 6 for clamping the safety belt 21. The clamp 6 is communicatively connected to the controller 5, and the controller 5 is configured to control the clamp 6 to release the clamping of the safety belt 21 and to resume the clamping of the safety belt 21. It is appreciated that when the clamp 6 releases the clamping of the safety belt 21, the safety belt 21 is allowed to perform a retraction movement or an extension movement, thereby allowing the safety belt 21 to be wound onto the winding shaft 11 or to be unwound from the winding shaft 11. When the clamp 6 resumes the clamping of the safety belt 21, the safety belt 21 is prevented from performing the retraction movement or the extension movement, thereby preventing the safety belt 21 from being continuously wound onto the winding shaft 11 or unwound from the winding shaft 11. The clamp 6 is disposed in the seat body 100, for example, and is configured to clamp the portion of the safety belt 21 between the retractor 1 and the safety drive 3.

[0045] The clamp 6 can be of any suitable type, see Figure 3 For example, the clamp 6 can be an electromagnetic clamp comprising an electromagnetic attraction device 64, and the clamp 6 can be controlled to release the clamping of the safety belt 21 or to resume the clamping of the safety belt 21 by controlling the power supply or the power cut-off of the electromagnetic attraction device 64. More specifically, in some embodiments, when the controller 5 receives the buckle locking signal or the buckle releasing signal, the controller 5 can control the clamp 6 to release the clamping of the safety belt 21 so as not to hinder the retraction movement or the extension movement of the safety belt 21. When the safety belt 21 is retracted or extended to a predetermined extent in the retraction movement or the extension movement, the controller 5 can control the safety drive 3 to stop driving the safety belt 21, the second rotary drive mechanism 12 to stop driving the winding shaft 11, and the clamp 6 to resume the clamping of the safety belt 21.

[0046] It is appreciated that, see Figure 1 When the safety belt 21 is retracted to the predetermined extent in the retraction movement, it means that the safety belt 21 coupled with the crotch belt 22 has been tensioned and exerts sufficient restraint force on the child seated, and at this time, the controller 5 can control the safety drive 3 to stop driving the safety belt 21 so as not to continue the retraction movement of the safety belt 21, and control the second rotary drive mechanism 12 to stop driving the winding shaft 11 so as not to continue the rotation of the winding shaft 11 in the winding direction T1, thereby avoiding the safety belt 21 from being excessively tensioned and causing discomfort to the child. Then, the controller 5 can control the clamp 6 to clamp the safety belt 21, so as to maintain the safety belt 21 in the tensioned state, thereby avoiding the safety belt 21 from being easily pulled out and causing the protection function of the safety belt 21 to fail when an accident occurs. See Figure 2When the safety belt 21 is extended to a predetermined extent in the extending movement, it means that the safety belt 21, which is released from the buckle locking relationship with the crotch belt 22, is relaxed enough to facilitate the removal of the child, at which time the controller 5 can control the safety belt driving device 3 to stop driving the safety belt 21 so that the safety belt 21 does not continue the extending movement, and control the second rotary driving mechanism 12 to stop driving the winding shaft 11 so that the winding shaft 11 does not continue to rotate in the releasing direction T2, thereby avoiding the safety belt 21 from being too long to be exposed from the seat body 100 and being easily entangled, which is not only unsightly but also affects the use. Then, the controller 5 can control the gripper 6 to grip the safety belt 21 to avoid the safety belt 21 from being easily pulled out, so that the exposed length of the safety belt 21 is kept at a proper length.

[0047] Referring to Figures 1 to 3 In some embodiments, a tension sensor 7 for detecting the tension of the safety belt 21 can be provided, and the tension sensor 7 is used to detect whether the safety belt 21 is tightened to a predetermined extent in the tightening movement. More specifically, the tension sensor 7 can be communicatively connected to the controller 5, and when the safety belt 21 is in the tightening movement, the controller 5 controls the safety belt driving device 3 to stop driving the safety belt 21 and controls the second rotary driving mechanism 12 to stop driving the winding shaft 11 according to the tension information from the tension sensor 7 when the tension sensor 7 detects that the tension of the safety belt 21 is greater than a predetermined threshold, which means that the safety belt 21 has been tightened to a proper extent. The tension sensor 7 can be arranged at any suitable position as long as it can detect the tension of the safety belt 21 when the safety belt 21 is buckled with the crotch belt 22. For example, the tension sensor 7 can be arranged between the shoulder belt 21 and the seat body 100 of the child safety seat, or arranged between the crotch belt 22 and the seat body 100 of the child safety seat.

[0048] In some embodiments, whether the safety belt 21 is extended to a predetermined extent in the extending movement is determined by the extension length of the safety belt 21. That is, when the controller 5 receives the buckle release signal, it controls the safety belt driving device 3 to drive the safety belt 21 to move a predetermined length in the extending direction M2 of the safety belt 21, and then controls the safety belt driving device 3 to stop driving the safety belt 21 and the second rotary driving mechanism 12 to stop driving the winding shaft 11, and controls the gripper 6 to resume gripping the safety belt 21.

[0049] Referring again to Figure 1 and Figure 2A preferred embodiment of the safety belt driving device 3 is shown in the present embodiment. The safety belt driving device 3 can include at least two rolling wheels 31 and 32, and a first rotating driving mechanism 33. The at least two rolling wheels 31 and 32 form a clamping passage for the safety belt 21 to pass through, and the first rotating driving mechanism 33 is in communication with the controller 5 and is used to drive at least one rolling wheel to rotate. In the present embodiment, the first rotating driving mechanism 33 includes, for example, a motor, the rolling wheel 31 is connected with the output shaft of the motor as a driving wheel, and the rolling wheel 32 is used as a driven wheel. By controlling the rotation of the rolling wheel 31 in two opposite directions r1, r2, the safety belt 21 is driven to move in a tightening or extending manner. In some embodiments, the first rotating driving mechanism 33 can include, for example, a plurality of motors, and the rolling wheels 31 and 32 can be respectively connected with the motors to be driven by the motors. In some embodiments, the circumferential surface of each rolling wheel for contacting the safety belt 21 can be provided with a pattern for increasing friction.

[0050] The method for controlling the extension length of the safety belt 21 during the extension movement is also provided in the embodiment. For example, in some embodiments, when the controller 5 receives the buckle release signal, the controller 5 controls the first rotation driving mechanism 33 to drive the rolling wheel 31 to rotate for a first predetermined number of turns (the second rotation driving mechanism 12 simultaneously controls the winding shaft 11 to rotate in the extension direction T2), i.e., the safety belt 21 is extended by a predetermined length in the extension movement direction M2 of the safety belt 21, and then the controller 5 controls the first rotation driving mechanism 33 and the second rotation driving mechanism 12 to stop driving, and controls the clamping device 6 to resume clamping the safety belt 21, so as to keep the extension length of the safety belt 21 unchanged. In another embodiment not shown, for example, a displacement sensor can be arranged at the outlet of the safety belt 21 of the seat body 100, and the extension length of the safety belt 21 during the extension movement is detected by the displacement sensor. More specifically, when the controller 5 receives the buckle release signal, the first rotation driving mechanism 33 drives the safety belt 21 to make the extension movement, and the second rotation driving mechanism 12 drives the winding shaft 11 to rotate in the extension direction T2, and when the displacement sensor detects that the safety belt 21 is extended by a predetermined length, the controller 5 controls the first rotation driving mechanism 33 to stop driving the safety belt 21 and the second rotation driving mechanism 12 to stop driving the winding shaft 11, and controls the clamping device 6 to resume clamping the safety belt 21, so as to stop the safety belt 21 from being extended. In yet another embodiment, for example, when the controller 5 receives the buckle release signal, the second rotation driving mechanism 12 drives the winding shaft 11 to rotate for a second predetermined number of turns in the extension direction T2 of the safety belt 21 (the first rotation driving mechanism 33 simultaneously drives the safety belt 21 to extend outward), i.e., the safety belt 21 is moved in the extension movement direction M2 of the safety belt 21 to extend by a predetermined length, and then the controller 5 controls the first rotation driving mechanism 33 and the second rotation driving mechanism 12 to stop driving, and controls the clamping device 6 to resume clamping the safety belt 21.

[0051] Referring to Figure 1 and Figure 2 In some embodiments, a safety belt guiding structure 9 can also be arranged in the seat body, and the safety belt guiding structure 9 is used to constrain the movement path of the safety belt 21 between the safety belt driving device 3 and the retractor 1, so as to ensure smooth movement of the safety belt 21.

[0052] Figure 3 A module diagram of the safety belt control system provided by the first embodiment of the application is shown. The working process of the safety belt control system provided by the first embodiment of the application during the child seating and unseating will be described below in combination with Figures 1 to 3

[0053] Referring to Figure 1 and Figure 3 ​When the child is seated, the user buckles the first buckle 81 and the second buckle 82, the buckle state detector 4 sends a buckle locking signal to the controller 5, the controller 5 receives the buckle locking signal, and sends instructions to the second rotation driving mechanism 12 of the retractor 1, the first rotation driving mechanism 33 of the belt driving device 3, and the electromagnetic adsorption device 64 of the clamp 6, so that the clamp 6 releases the clamping of the safety belt 21, the first rotation driving mechanism 33 drives the safety belt 21 to move in a tightening direction, and the winding shaft 11 of the retractor 1 rotates to wind the safety belt 21. During the tensioning of the safety belt 21, when the tension sensor 7 detects that the tension of the safety belt 21 is greater than a predetermined threshold, the controller 5 sends instructions to control the second rotation driving mechanism 12 of the retractor 1 and the first rotation driving mechanism 33 of the belt driving device 3 to stop driving, and controls the clamp 6 to resume clamping the safety belt 21.

[0054] Referring to Figure 2 and Figure 3 When the child needs to get off, the user unbuckles the first buckle 81 and the second buckle 82, the buckle state detector 4 sends a buckle unlocking signal to the controller 5, the controller 5 receives the buckle unlocking signal, and sends instructions to the second rotation driving mechanism 12 of the retractor 1, the first rotation driving mechanism 33 of the belt driving device 3, and the electromagnetic adsorption device 64 of the clamp 6, so that the clamp 6 releases the clamping of the safety belt 21, the first rotation driving mechanism 33 drives the safety belt 21 to move in an extension direction, and the winding shaft 11 of the retractor 1 rotates to release the safety belt 21. When the extension length of the safety belt 21 reaches a predetermined value (for example, by limiting the rotation of the rolling wheel 31 by a first predetermined number of turns, or by limiting the rotation of the winding shaft 11 by a second predetermined number of turns), the controller 5 sends instructions to control the second rotation driving mechanism 12 of the retractor 1 and the first rotation driving mechanism 33 of the belt driving device 3 to stop driving, and controls the clamp 6 to resume clamping the safety belt 21.

[0055] In some embodiments, the clamp 6 can also be manually operated, for example, to manually adjust the length of the safety belt 21 when the control system of the safety belt is unexpectedly powered off, so as not to affect the use of the safety belt 21.

[0056] In some embodiments, the clamp 6 and the retractor 1 can be integrated into a retraction and clamping module.

[0057] Second embodiment

[0058] Figure 4 and Figure 5The schematic structural diagram of the control system of the safety belt according to the second embodiment of the present application is shown, and the main difference between the second embodiment and the first embodiment is that a preferred embodiment of the clamp 6 is shown in the second embodiment. It can be understood that other components in the second embodiment can have the same or similar structures as those in the first embodiment without conflict, and the same or similar parts between the second embodiment and the first embodiment will not be described in detail here.

[0059] As can be seen from Figure 4 and Figure 5 The clamp 6 can include an abutting portion 61, a locking member 62, a first elastic element 63, and an electromagnetic attraction device 64. The abutting portion 61 and the locking member 62 form a passage for the safety belt 21 to pass through. The first elastic element 63 is used to keep the locking member 62 in a locking state in which the locking member 62 abuts against the abutting portion 61 to clamp the safety belt 21. It can be understood that the locking state of the locking member 62 corresponds to the clamp 6 resuming clamping of the safety belt 21. The electromagnetic attraction device 64 is in communication connection with the controller 5, for example, when the electromagnetic attraction device 64 is powered, a magnetic attraction force is applied to the locking member 62, so that the locking member 62 can move to an unlocking state in which the locking member 62 is disengaged from the abutting portion 61 to release the clamping of the safety belt 21, against the action of the first elastic element 63. It can be understood that the unlocking state of the locking member 62 corresponds to the clamp 6 releasing the clamping of the safety belt 21. Conversely, when the electromagnetic attraction device 64 is de-energized, the magnetic attraction force is no longer applied to the locking member 64, and the locking member 62 automatically returns to the locking state under the action of the first elastic element 63.

[0060] In some embodiments, the locking member 62 can include a first bent portion 621 and a second bent portion 622 connected together, and a pivot shaft 623 is arranged at the connection between the first bent portion 621 and the second bent portion 622. See Figure 4 When the electromagnetic attraction device 64 is de-energized, the first elastic element 63 applies a force to the first bent portion 621 to make the first bent portion 621 abut against the abutting portion 61, clamping the safety belt 21 between the first bent portion 621 and the abutting portion 61, so that the clamp 6 clamps the safety belt 21 to restrict the movement of the safety belt 21. See Figure 5 When the electromagnetic attraction device 64 is energized, the electromagnetic attraction device 63 applies a magnetic attraction force to the second bent portion 622, and the locking member 62 rotates around the pivot shaft 623, so that the first bent portion 621 is disengaged from the abutting portion 61 against the action of the first elastic element 63, and the clamp 6 no longer clamps the safety belt 21 to allow the safety belt 21 to move.

[0061] In some embodiments, at least a part of the second bending portion 622 is exposed for manual operation, so that when the control system of the safety belt is unexpectedly powered off, the second bending portion 622 can be manually pressed to release the clamping of the safety belt 21 by the clamp 6, and the user can manually tighten or extend the safety belt 21 at this time. When the user adjusts the length of the safety belt 21, the second bending portion 622 is released, and the clamp 6 restores the clamping of the safety belt 21.

[0062] In some embodiments, the first bending portion 621 can be provided with teeth 6211 for contacting the safety belt 21, which is beneficial to increase the frictional resistance of the safety belt 21 when the locking member 62 is in the locked state.

[0063] Third embodiment

[0064] Figure 6 And Figure 7 The schematic structure of the control system of the safety belt provided by the third embodiment of the present application is shown, and the main difference between the present embodiment and the above-mentioned second embodiment is that another preferred embodiment of the safety belt driving device 3 is shown in the present embodiment. It can be understood that other components in the present embodiment can have the same or similar structure as in the second embodiment without conflict, and the same or similar parts between the present embodiment and the above-mentioned second embodiment will not be described in detail here.

[0065] By Figure 6 As can be seen from the above, the safety belt driving device 3 comprises a linear driving mechanism 35, which can be arranged in the seat body 100 and is in communication connection with the controller 5, and the output end 351 of the linear driving mechanism 35 is connected with the safety belt 21. The linear driving mechanism 35 can be, for example, a telescopic cylinder, a gear rack, a worm gear, etc. It can be understood that while the output end 351 of the linear driving mechanism 35 drives the safety belt 21 to move linearly, the second rotary driving mechanism 12 of the retractor 1 drives the winding shaft 11 to rotate in the winding direction or the unwinding direction of the safety belt 21, which can realize the tightening movement or the extending movement of the safety belt 21.

[0066] It should be noted that in the present embodiment, the linear driving mechanism 35 is provided, and the safety belt driving device 3 can not be provided with the first rotary driving mechanism 33 in the above-mentioned embodiments. In order to guide the movement of the safety belt 21 in the seat body 100, the safety belt guiding structure 9 can further comprise a guide wheel 90, Figure 6 And Figure 7In the embodiment, the guide wheel 90 is arranged close to the exit position of the seat belt 21 from the seat body 100, and the connection between the output end 351 of the linear driving mechanism 35 and the seat belt 21 can be located between the guide wheel 90 and the retractor 1. The gripper 6 is adapted to grip the portion of the seat belt 21 between the output end 351 of the linear driving mechanism 35 and the retractor 1. Of course, in other embodiments, the arrangement position and number of the guide wheels can also have other embodiments.

[0067] When the controller 5 receives the buckle release signal in the embodiment, the gripper 6 releases the grip on the seat belt 21, and then the second rotary driving mechanism 12 drives the winding shaft 11 to rotate to release the seat belt 21, and the linear driving mechanism 35 drives the seat belt 21 to extend outward. The controller 5 can determine whether the seat belt 21 extends to a predetermined extent by the displacement of the output end 351. More specifically, the controller 5 controls the output end 35 of the linear driving mechanism 3 to carry the seat belt 21 to move a predetermined length in the extension direction M2 of the seat belt, and then controls the linear driving mechanism 35 and the second rotary driving mechanism 12 to stop driving, and controls the gripper 6 to resume the grip on the seat belt 21.

[0068] Figure 8 A module diagram of the control system of the seat belt provided by the third embodiment of the present application is shown. The working process of the control system of the seat belt provided by the third embodiment of the present application when a child gets on and off the seat will be described below. Figures 6 to 8

[0069] Referring to Figure 6 and Figure 8 When a child gets on the seat, the user buckles the first buckle 81 and the second buckle 82, the buckle state detector 4 sends a buckle locking signal to the controller 5, and the controller 5 receives the buckle locking signal and sends instructions to the second rotary driving mechanism 12 of the retractor 1, the linear driving mechanism 35 of the seat belt driving device 3, and the electromagnetic adsorption device 64 of the gripper 6, so that the gripper 6 releases the grip on the seat belt 21, the output end 351 of the linear driving mechanism 35 drives the seat belt 21 to move tightly, and the winding shaft 11 of the retractor 1 rotates to wind the seat belt 21. During the tensioning of the seat belt 21, when the tension sensor 7 detects that the tension of the seat belt 21 is greater than a predetermined threshold, the controller 5 sends instructions to control the second rotary driving mechanism 12 of the retractor 1 and the linear driving mechanism 35 of the seat belt driving device 3 to stop driving, and controls the gripper 6 to resume the grip on the seat belt 21.

[0070] Referring to Figure 7 and Figure 8 ​When the child needs to get off, the user releases the first buckle 81 and the second buckle 82, the buckle state detector 4 sends a buckle release signal to the controller 5, the controller 5 receives the buckle release signal and sends instructions to the second rotating drive mechanism 12 of the retractor 1, the linear drive mechanism 35 of the belt driving device 3, and the electromagnetic adsorption device 64 of the clamp 6, so that the clamp 6 releases the clamping of the safety belt 21, the output end 351 of the linear drive mechanism 35 drives the safety belt 21 to move outward, and the winding shaft 11 of the retractor 1 rotates to release the safety belt 21. When the extension length of the safety belt 21 reaches a predetermined value (for example, by limiting the displacement length of the output end 351 of the linear drive mechanism 35, or by limiting the second predetermined number of rotations of the winding shaft 11), the controller 5 sends instructions to control the second rotating drive mechanism 12 of the retractor 1 and the linear drive mechanism 35 of the belt driving device 3 to stop driving, and controls the clamp 6 to resume clamping the safety belt 21.

[0071] Fourth embodiment

[0072] Figure 9 And Figure 10 The schematic structure of the safety belt control system provided by the fourth embodiment of the present application is shown. The main difference between the fourth embodiment and the second embodiment described above is that the retractor 1 in the fourth embodiment is not configured with the second rotating drive mechanism 12, but is driven by a mechanical structure. It can be understood that, without conflict, other components in the fourth embodiment can have the same or similar structure as in the second embodiment, and the same or similar parts between the fourth embodiment and the second embodiment will not be described in detail here.

[0073] Referring to Figure 9 And Figure 10 In the fourth embodiment, the retractor 1 can include a second elastic member 13, which maintains the force applied to the winding shaft 11 to rotate the winding shaft 11 in the winding direction T1 of the safety belt 21. In some embodiments, the second elastic member 13 includes, for example, a coil spring.

[0074] Figure 11 The module diagram of the safety belt control system provided by the fourth embodiment of the present application is shown. The working process of the safety belt control system provided by the fourth embodiment of the present application when the child gets on and off will be described below in conjunction with Figures 9 to 11

[0075] Referring to Figure 9 And Figure 11 ​When the child is seated, the user buckles the first buckle 81 and the second buckle 82, the buckle state detector 4 sends a buckle locking signal to the controller 5, and the controller 5 sends instructions to the first rotating drive mechanism 33 of the safety belt driving device 3 and the electromagnetic adsorption device 64 of the clamping device 6 after receiving the buckle locking signal, so that the clamping device 6 releases the clamping of the safety belt 21, the first rotating drive mechanism 33 drives the safety belt 21 to move in the tightening direction, and the winding shaft 11 of the winder 1 rotates under the action of the second elastic member 13 to wind the safety belt 21. During the tensioning of the safety belt 21, when the tension sensor 7 detects that the tension of the safety belt 21 is greater than a predetermined threshold value, the controller 5 sends instructions to control the first rotating drive mechanism 33 of the safety belt driving device 3 to stop driving, and controls the clamping device 6 to resume clamping the safety belt 21.

[0076] Referring to Figure 10 and Figure 11 When the child needs to get off, the user releases the first buckle 81 and the second buckle 82, the buckle state detector 4 sends a buckle release signal to the controller 5, and the controller 5 sends instructions to the first rotating drive mechanism 33 of the safety belt driving device 3 and the electromagnetic adsorption device 64 of the clamping device 6 after receiving the buckle release signal, so that the clamping device 6 releases the clamping of the safety belt 21, the first rotating drive mechanism 33 drives the safety belt 21 to move in the extending direction, and the safety belt 21 is released from the winding shaft 11 of the winder 1 under the driving of the first rotating drive mechanism 33 to overcome the force of the second elastic member 13. When the extending length of the safety belt 21 reaches a predetermined value (for example, by limiting the rolling wheel 31 to rotate a first predetermined number of turns), the controller 5 sends instructions to control the first rotating drive mechanism 33 of the safety belt driving device 3 to stop driving, and controls the clamping device 6 to resume clamping the safety belt 21.

[0077] Figure 12 A module diagram of the control system of the safety belt provided by the fifth embodiment of the present application is shown. The control system of the safety belt provided by the fifth embodiment is mainly different from the fourth embodiment described above in that the first rotating drive mechanism 33 is replaced by a linear drive mechanism 35, and the structure of the linear drive mechanism 35 can be referred to the description in the third embodiment. In this embodiment, the winder 1 can not be configured with the second rotating drive mechanism 12, for example, the second elastic member 13 in the fourth embodiment applies a force to the winding shaft 11 to make the winding shaft 11 rotate in the winding direction of the safety belt 21. The working process of the control system of the safety belt provided by this embodiment when the child is seated and gets off is similar to that of the fourth embodiment described above, and will not be described here.

[0078] As described above, the embodiments of the present application also provide a seating cabin 1000 of a child carrier, and the seating cabin 1000 can be provided with the control system of the safety belt described above, and the seating cabin 1000 can be a child safety seat.

[0079] As mentioned above, the present application also provides a child carrier, which comprises the aforementioned child carrier seat 1000.

[0080] It can be understood that the application range of the safety belt control system provided by the embodiments of the present application is not limited to the child carrier, and the child carrier can be any carrier that needs to bind passengers (including adults and children) in the seat body.

[0081] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0082] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A passenger cabin for a child vehicle, characterized in that, The passenger cabin is equipped with a seatbelt control system, which includes: A retractor is connected to the seat belt; A seatbelt drive device is provided, wherein the connection point between the seatbelt drive device and the seatbelt is located on the side of the connection point between the retractor and the seatbelt facing the outside of the passenger compartment along the extension direction of the seatbelt. The seatbelt drive device engages with the seatbelt and is capable of driving the seatbelt to perform tightening or extending movements, so as to allow the seatbelt to be wound onto or released from the retractor. The seatbelt drive device is used to drive the seatbelt to move a predetermined length in the extension direction of the seatbelt in order to remove the child from the passenger compartment. A buckle status detector is used to detect the status of the first buckle installed on the seat belt, so as to issue a buckle locking signal or a buckle unlocking signal; A clamp for releasing and re-clamping the seatbelt; and The controller is communicatively connected to the clamp, the seat belt drive device, and the buckle status detector. When the controller receives a buckle locking signal, it controls the clamp to release its grip on the seat belt and controls the seat belt drive device to perform a tightening movement. Conversely, when the controller receives a buckle release signal, it controls the clamp to release its grip on the seat belt and controls the seat belt drive device to perform an extending movement. After the seat belt extends a predetermined length, the controller then controls the clamp to tighten the seat belt. The retractor and the seat belt drive device are disposed within the seat body of the passenger compartment.

2. The passenger cabin of the child vehicle according to claim 1, characterized in that, The clamp is an electromagnetic clamp. Specifically, when the controller receives the buckle locking signal or the buckle releasing signal, it controls the clamp to release its grip on the seat belt; and When the seat belt tightens or extends to a predetermined extent during the tightening or extending movement, the controller controls the seat belt drive device to stop driving the seat belt and controls the clamp to resume clamping the seat belt.

3. The passenger cabin of the child vehicle according to claim 1, characterized in that, The clamp includes: a support portion, a locking member, a first elastic element, and an electromagnetic adsorption device; A passage for the seat belt to pass through is formed between the supporting part and the locking member; The first elastic element is used to hold the locking member in a locked state against the bearing portion to clamp the seat belt; and The electromagnetic adsorption device is communicatively connected to the controller and is used to apply magnetic attraction to the locking member so that the locking member disengages from the supporting part.

4. The passenger compartment of the child vehicle according to claim 3, characterized in that, The locking member includes a first bent portion and a second bent portion connected together, and a pivot shaft is provided at the connection between the first bent portion and the second bent portion; The first elastic element is used to apply force to the first bent portion so that the first bent portion abuts against the supporting portion, and the electromagnetic adsorption device is used to apply magnetic attraction force to the second bent portion so that the first bent portion disengages from the supporting portion.

5. The passenger compartment of the child vehicle according to claim 4, characterized in that, At least a portion of the second bend is exposed for manual operation; and / or, the first bend is provided with teeth for contacting the seat belt.

6. The passenger compartment of the child vehicle according to claim 1, characterized in that, It also includes a tension sensor for detecting the tension of the seat belt, the tension sensor being communicatively connected to the controller; when the seat belt is tightening, if the tension sensor detects that the tension of the seat belt is greater than a predetermined threshold, the controller controls the seat belt drive device to stop driving the seat belt.

7. The passenger compartment of the child vehicle according to claim 6, characterized in that, The retractor includes a winding shaft; The seat belt is a shoulder strap of a child safety seat. A first end of the shoulder strap is connected to the winding shaft, and a second end of the shoulder strap is provided with the first buckle. The first buckle is used to cooperate with the second buckle of the child safety seat's crotch strap. The tension sensor is disposed between the shoulder strap and the seat body of the child safety seat, or between the crotch strap and the seat body of the child safety seat.

8. The passenger compartment of the child vehicle according to claim 7, characterized in that, The child safety seat has a seat belt guide structure in its seat body.

9. The passenger compartment of the child vehicle according to claim 1, characterized in that, The seat belt drive device includes: at least two rollers, with a clamping channel formed between the at least two rollers for the seat belt to pass through; and a first rotation drive mechanism, which is communicatively connected to the controller and is used to drive at least one of the rollers to rotate.

10. The passenger compartment of the child vehicle according to claim 9, characterized in that, When the controller receives the buckle release signal, it controls the clamp to release the clamp on the seat belt, and controls the first rotation drive mechanism to drive the at least one of the rolling wheels to rotate a first predetermined number of turns, so that the seat belt moves a predetermined length in the extension direction of the seat belt, and then controls the clamp to resume clamping the seat belt.

11. The passenger compartment of the child vehicle according to claim 1, characterized in that, The seat belt drive device includes a linear drive mechanism, which is communicatively connected to the controller and whose output is connected to the seat belt.

12. The passenger compartment of the child vehicle according to claim 11, characterized in that, When the controller receives the buckle release signal, it controls the clamp to release the seat belt and controls the output of the linear drive mechanism to drive the seat belt to move a predetermined length in the extension direction of the seat belt, and then controls the clamp to restore the clamping of the seat belt.

13. The passenger compartment of the child vehicle according to claim 1, characterized in that, The retractor includes a winding shaft and a second rotation drive mechanism connected to the winding shaft; The second rotation drive mechanism is communicatively connected to the controller. When the controller receives the buckle locking signal, it controls the second rotation drive mechanism to drive the winding shaft to rotate in the winding direction of the seat belt. When the controller receives the buckle releasing signal, it controls the second rotation drive mechanism to drive the winding shaft to rotate in the release direction of the seat belt.

14. The passenger compartment of the child vehicle according to claim 13, characterized in that, When the controller receives the buckle release signal, it controls the clamp to release the seat belt and controls the second rotation drive mechanism to drive the winding shaft to rotate a second predetermined number of turns in the release direction of the seat belt, and then controls the clamp to resume clamping the seat belt.

15. The passenger compartment of the child vehicle according to claim 1, characterized in that, The retractor includes a winding shaft and a second elastic element, the second elastic element applying a force to the winding shaft to rotate the winding shaft in the winding direction of the seat belt.

16. The passenger compartment of the child vehicle according to claim 1, characterized in that, The passenger compartment is equipped with a child safety seat.

17. A child vehicle, characterized in that, The passenger compartment of the child vehicle as described in any one of claims 1 to 16.

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