CN210792882U

CN210792882U - Child safety seat

Info

Publication number: CN210792882U
Application number: CN201921035150.0U
Authority: CN
Inventors: 林江娟; 夏环乐; 郑亚峰
Original assignee: Ningbo Welldon Baby Safety Technology Co ltd
Current assignee: Ningbo Welldon Baby Safety Technology Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-06-19
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a child safety seat, which comprises a base, ISOFIX mechanism, seat portion, buckle mechanism, supporting leg mechanism, central processing unit, and alarm device, wherein the base is equipped with rotatable carousel, seat portion sets up in the carousel, wherein at the carousel, ISOFIX mechanism, buckle mechanism, supporting leg mechanism department is equipped with the signal acquisition device who is used for detecting this structure current at locking or unblock state respectively, each signal acquisition device difference signal connection is in central processing unit, alarm device sets up the preceding tip at the base, each signal acquisition device sends respective detected signal to central processing unit, if the detected signal that is in unblock state appears, then central processing unit control alarm device carries out unblock warning suggestion. The utility model discloses can detect and indicate a plurality of key structure of children's safety seat, provide comprehensive detection alarm mechanism, the suggestion effect is more directly perceived obvious, and the user of being convenient for in time knows the seat state.

Description

Child safety seat

Technical Field

The utility model relates to a children's safety seat field, more specifically relate to one kind can put in place the installation condition to whole many structures and detect and gather the children's safety seat that the suggestion was reported to the police.

Background

The automobile child safety seat is designed for children of different ages, is installed in an automobile and can effectively improve the riding safety of the children. During riding, the child can only sit on the safety seat to ensure riding safety.

Generally, the child safety seat is fixedly installed at the rear row of the automobile through mechanical structures arranged at different positions, and the child safety seat comprises an ISOFIX mechanism, a supporting leg mechanism and the like. In addition, in the child safety seat having the swivel function, a swivel adjustment mechanism is further provided between the base and the seat body. The safety belt buckle mechanism of the child safety seat is also a core part of the child safety seat, the safety belt can limit children in the seat to provide protection, and whether the buckle is clamped in place determines the riding safety degree of the children. Therefore, whether the mechanical structures are installed in place or not is important for the safety of the child safety seat, and it is important to detect and prompt the installation condition of the key structures of the child safety seat.

The prior patent with publication number CN109177830A discloses a child safety seat with an alarm system, which comprises a seat body, an upper pulling belt, a base and a connector, wherein the alarm system comprises a first signal trigger device for detecting whether the connector extends out of the base or not and sending a first trigger signal when the connector extends out, a second signal trigger device for detecting whether the upper pulling belt is tensioned or not and sending a second trigger signal when the upper pulling belt is tensioned, a processing unit for receiving the first trigger signal and the second trigger signal and outputting a third trigger signal according to the received signals, and an alarm for receiving the third trigger signal and sending an alarm signal. This patent can send out the warning in order to indicate the user to inspect when the user does not correctly use children's safety seat pull-up strap. Above-mentioned scheme has only detected children's safety seat's last stretching strap mechanism, and the detection range undersize is not comprehensive enough.

The existing child safety seat with the detection alarm function can only carry out single detection prompt on a certain structure in the seat, the detection structures are few, the range is small, and all-around detection can not be carried out on all the structures in the whole child safety seat. If the structure of a key part at a certain position fails or is not installed in place and is not detected and found in time, hidden danger can be caused to the riding safety of children. In addition, the position of the prompt area is not friendly and intuitive, and is usually arranged around the detected structure, and in addition, the light in the automobile is dark, which is inconvenient for the user to visually observe.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a child safety seat has solved above-mentioned problem to a certain extent, can detect and indicate a plurality of key structure of child safety seat, provides comprehensive detection alarm mechanism, and the suggestion effect is more directly perceived obvious, and the user of being convenient for in time knows the seat state, has improved child safety seat's safety in utilization greatly.

In order to achieve the above object, the present invention provides a child safety seat, which includes:

the seat comprises a base, an ISOFIX mechanism, a seat part, a buckle mechanism, a supporting leg mechanism, a central processing unit and an alarm device, wherein the base is provided with a rotatable turntable and a locking unit for locking or unlocking the turntable, the locking unit comprises a first signal acquisition device for detecting that the turntable is in a locking or unlocking state, and the seat part is arranged on the turntable;

the ISOFIX mechanism is arranged on the base and is provided with a second signal acquisition device for detecting that the ISOFIX mechanism is in a locking or unlocking state;

the buckle mechanism is arranged on the seat part and is provided with a third signal acquisition device for detecting whether the buckle is in a locking or unlocking state;

the supporting leg mechanism is connected to the base and is suitable for providing a supporting effect for the seat, and the supporting leg mechanism is provided with a fourth signal acquisition device for detecting that the supporting leg is in a locked or unlocked state;

first signal acquisition device second signal acquisition device third signal acquisition device and fourth signal acquisition device respectively signal connection in central processing unit, central processing unit simultaneous signal connection in alarm device, alarm device sets up the front end portion of base, first signal acquisition device second signal acquisition device third signal acquisition device and fourth signal acquisition device with respective detected signal send to central processing unit, if the detected signal that is in the unblock state appears, then central processing unit control alarm device carries out unblock warning suggestion.

According to the utility model discloses a preferred embodiment, children's safety seat further includes the cushion portion, the cushion portion sets up the seat portion supplies children to take, the cushion portion is including the fifth signal acquisition device who is used for detecting whether children are gone into to sit, fifth signal acquisition device signal connection in central processing unit, if fifth signal acquisition device detects children and goes into to sit, then central processing unit can be according to first signal acquisition device, second signal acquisition device, third signal acquisition device and the whole detected signal of fourth signal acquisition device reports to the police, if fifth signal acquisition device detects children and does not go into to sit, then central processing unit can selectively according to first signal acquisition device, second signal acquisition device, third signal acquisition device, And one or more detection signals in the fourth signal acquisition device give an alarm.

Preferably, alarm device includes bee calling organ and a plurality of pilot lamp, first signal acquisition device second signal acquisition device third signal acquisition device fourth signal acquisition device and the respective detected signal of fifth signal acquisition device corresponds one respectively the pilot lamp carries out the warning suggestion, the pilot lamp sets up the front end of base is convenient for the user and observes.

According to the preferred embodiment of the present invention, the side wall of the turntable has a plurality of positioning grooves along the circumferential direction, and the plurality of positioning grooves include at least one working positioning groove and at least one pause positioning groove;

the locking unit comprises a moving member and an elastic resetting member, the first signal acquisition device is a microswitch, the moving member is slidably arranged on the base, the moving member is selectively engaged with one positioning groove of the turntable to lock the turntable, the elastic resetting member continuously applies acting force to the moving member to enable the moving member to enter the positioning groove, the microswitch is used for detecting the displacement of the moving member, when the microswitch detects that the moving member is positioned in the working positioning groove, the central processing unit receives a detection signal of rotating to the position, and when the microswitch detects that the moving member is far away from the working positioning groove or positioned in the pause positioning groove, the central processing unit receives a detection signal of not rotating to the position.

Preferably, the depth of the working positioning groove is greater than the depth of the pause positioning groove, the microswitch is arranged on a displacement path of the moving member, when the moving member completely enters the working positioning groove, the moving member acts on the microswitch to enable the microswitch to detect that the moving member is located in the working positioning groove, and when the moving member does not completely enter the working positioning groove or the moving member enters the pause positioning groove, the moving member does not act on the microswitch.

According to the utility model discloses a preferred embodiment, ISOFIX device includes ISOFIX jack catch and locking moving part, the locking moving part with the linkage of ISOFIX jack catch, second signal acquisition device is equipped with the action reed, the action reed is along with the motion of locking moving part is put through or is broken off so that second signal acquisition device is right the motion state of locking moving part detects, second signal acquisition device with detected signal send to central processing unit supplies central processing unit is right the connection status of ISOFIX jack catch judges.

According to the preferred embodiment of the present invention, the buckle mechanism is used for locking two insertion pieces simultaneously, and comprises a buckle body suitable for installing the insertion pieces, a self-locking mechanism for locking the insertion pieces, a button for unlocking the self-locking mechanism, and an ejection mechanism for ejecting the insertion pieces out of the buckle body, the third signal acquisition device is a magnetic sensitive switch arranged in the buckle body, the ejection mechanism is provided with a magnet, when the distance between the magnet and the magnetic sensitive switch is smaller than a preset value, the magnet triggers the magnetic sensitive switch, the central processing unit receives a detection signal that the magnetic sensitive switch is in place when triggered, and receives a detection signal that the magnetic sensitive switch is not in place when not triggered; when the inserting sheet is locked by the self-locking mechanism, the inserting sheet compresses the ejecting mechanism and enables the distance between the magnet and the magnetic sensitive switch to be smaller than a preset value, and when the inserting sheet is not locked, the ejecting mechanism is not pressed, so that the distance between the magnet and the magnetic sensitive switch is larger than a preset value.

Preferably, the pop-up mechanism includes an elastic reset member and a contact member, the magnet is disposed on the contact member, the elastic reset member is disposed in the buckle body, the contact member is movably disposed in the buckle body, and the elastic reset member applies an acting force to the contact member continuously to make the contact member far away from the locking position.

According to the preferred embodiment of the present invention, the supporting leg structure comprises a base, a bottom plate, an indicator light, and a supporting tube assembly, wherein the base is connected to the lower end of the supporting tube assembly, the base has an accommodating cavity, the fourth signal acquisition device is disposed in the accommodating cavity, the bottom plate is movably connected to the bottom of the base, the fourth signal acquisition device is provided with an action reed, and the action reed is switched between an on state and an off state along with the movement of the bottom plate;

the bottom plate moves towards the inside of the containing cavity under the action of external force and extrudes the action reed to enable the action reed to be switched on, after the action reed is switched on, the fourth signal acquisition device sends a position-in command to the central processing unit, the action reed is switched off, and the fourth signal acquisition device sends a position-not-in command to the central processing unit.

According to the utility model discloses a preferred embodiment, fifth signal pickup assembly includes two at least parallel connection's sensor, two the sensor sets up symmetrically the both sides of axis in the cushion portion, the central processing unit electricity is connected in two the sensor, two the sensor is suitable for and detects whether children are into the seat and with detected signal send to the central processing unit.

The above and other objects, features and advantages of the present invention will be further apparent from the following detailed description and the accompanying drawings.

Drawings

FIG. 1 is an exploded schematic view of one embodiment of a child safety seat of the present invention;

fig. 2 is a schematic view of an embodiment of the rotation mechanism of the child safety seat of the present invention, showing a state in which the turntable is facing right ahead;

fig. 3 is a schematic view of an embodiment of the rotation mechanism of the child safety seat of the present invention, showing the state of the turntable facing to the right side;

fig. 4 is a schematic perspective view of an embodiment of a turntable according to the present invention;

fig. 5 is a bottom schematic view of an embodiment of the turntable of the present invention;

FIG. 6 is a partially schematic view of one embodiment of a rotation mechanism for a child safety seat of the present invention, showing the upper end surface of the base;

FIG. 7 is a partial schematic view of one embodiment of a child safety seat swivel mechanism of the present invention, showing the bottom surface of the base;

fig. 8 is a partial perspective view of one embodiment of the rotation mechanism of the child safety seat of the present invention, showing the bottom surface of the base;

fig. 9 is a partial schematic view of an embodiment of the base of the present invention, showing the upper end surface of the base;

FIG. 10 is a schematic view of one embodiment of a moving member of the present invention;

fig. 11 is a schematic perspective view of an ISOFIX mechanism according to a preferred embodiment of the present invention;

fig. 12 is a schematic view of the ISOFIX jaw in an unlocked state according to the preferred embodiment of the present invention;

fig. 13 is a schematic view of the state of the ISOFIX jaw in a locked state according to the preferred embodiment of the present invention;

FIG. 14 is a perspective view of one embodiment of a snap mechanism;

FIG. 15 is a rear view of one embodiment of a catch mechanism;

FIG. 16 is a partial schematic view of one embodiment of a buckle mechanism (shown with the front shell of the buckle body removed) showing the tab compressing the ejection mechanism;

FIG. 17 is a partial schematic view of an embodiment of a buckle mechanism (with the back shell of the buckle body removed) showing the self-locking mechanism moved to an unlocked position;

FIG. 18 is a schematic structural view of a support leg mechanism according to a preferred embodiment of the present invention;

FIG. 19 is another schematic structural view of the support leg mechanism according to the preferred embodiment of the present invention;

FIG. 20 is an enlarged partial view of the support leg mechanism according to the preferred embodiment of the present invention;

FIG. 21 is a top view of a child safety seat according to a preferred embodiment of the present invention;

fig. 22 is a plan view of a seat cushion mechanism according to a preferred embodiment of the present invention.

Detailed Description

The following description will be further described with reference to the accompanying drawings and specific embodiments, and it should be noted that any combination of the following described embodiments or technical features can be used to form a new embodiment without conflict.

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

With reference to fig. 1 to 22 of the drawings, a child safety seat according to a preferred embodiment of the present invention will be explained in the following description. The child safety seat comprises a base 10, an ISOFIX mechanism 20, a seat portion 30, a buckle mechanism 40, a support leg mechanism 50, a central processing unit (not shown in the figure), and an alarm device 60.

The base 10 is provided with a rotatable turntable 11 and a locking unit 12 for locking or unlocking the turntable, the locking unit 12 includes a first signal acquisition device 121 for detecting whether the turntable is in a locked or unlocked state, and the seat portion 30 is disposed on the turntable 11.

The ISOFIX mechanism 20 is disposed on the base 10, and the ISOFIX mechanism 20 is provided with a second signal acquisition device 21 for detecting whether the ISOFIX mechanism 20 is in a locked or unlocked state.

The buckle mechanism 40 is provided in the seat portion 30, and the buckle mechanism 40 is provided with a third signal acquisition device 41 for detecting whether the buckle is in a locked or unlocked state.

The support leg mechanism 50 is connected to the base 10 and adapted to provide a support for the seat, the support leg mechanism 50 being provided with a fourth signal acquisition device (not shown) for detecting whether the support leg is in a locked or unlocked state.

The first signal acquisition device 121, the second signal acquisition device 21, the third signal acquisition device 41 and the fourth signal acquisition device are respectively in signal connection with the central processing unit. The central processing unit is also connected with a signal of an alarm device 60, and the alarm device 60 is arranged at the front end part 14 of the base 10. The first signal acquisition device 121, the second signal acquisition device 21, the third signal acquisition device 41 and the fourth signal acquisition device send respective detection signals to the central processing unit, and if the detection signals in the unlocking state appear, the central processing unit controls the alarm device 60 to perform unlocking alarm prompt.

Further, the child safety seat further includes a cushion portion 70, and the cushion portion 70 is provided in the seat portion 30 for seating a child. The cushion part 70 includes a fifth signal collecting device 71 for detecting whether the child is seated, and the fifth signal collecting device 71 is connected to the central processing unit. If the fifth signal acquisition device 71 detects that the child is seated, the central processing unit alarms according to all detection signals of the first signal acquisition device 121, the second signal acquisition device 21, the third signal acquisition device 41 and the fourth signal acquisition device; if the fifth signal acquisition device 71 detects that the child is not seated, the central processing unit will selectively alarm according to one or more detection signals of the first signal acquisition device 121, the second signal acquisition device 21, the third signal acquisition device 41 and the fourth signal acquisition device.

It is easy to understand that, when it is detected that a child sits on the seat, the turntable 11, the ISOFIX mechanism 20, the buckle mechanism 40, and the support leg mechanism 50 should all be ensured to be in a locked state, and thus the riding safety of the child can be ensured, so that all the structures of the turntable 11, the ISOFIX mechanism 20, the buckle mechanism 40, and the support leg mechanism 50 should be detected and alarmed in the sitting state of the child. When it is detected that the child is not seated, some of the structures may still be in an unlocked state, such as the latch structure 40 and the rotary disc 11, the latch structure 40 should be securely latched in place after the child is seated, and the rotary disc 11 should be securely locked after the fifth signal acquisition device 71 is adjusted in direction, so that, for example, if the fifth signal acquisition device 71 detects that the child is not seated, the central processing unit may be configured to selectively alarm according to the detection signals of the second signal acquisition device 21 and the fourth signal acquisition device.

It should be noted that the alarm device 60 includes a buzzer (not shown in the figure) and a plurality of indicator lights 61, the respective detection signals of the first signal acquisition device 121, the second signal acquisition device 21, the third signal acquisition device 41, the fourth signal acquisition device, and the fifth signal acquisition device 71 respectively correspond to one indicator light 61 for alarm indication, and the indicator lights 61 are disposed at the front end portion 14 of the base 10 for the convenience of observation of the user.

It will be readily understood by those skilled in the art that the indicator light 61 may be, but is not limited to, switched on and off and/or switched in color to provide a warning function for the user to observe when the light in the vehicle is dim.

Specifically, as shown in fig. 4 to 7, the side wall of the rotary disk 11 has a plurality of positioning grooves 111 along the circumferential direction, and the locking unit 12 selectively engages with one of the positioning grooves 111 to hold the rotary disk 11 at a rotational position corresponding to the positioning groove 111, and fig. 2 and 3 show two rotational positions of the rotary disk 11, and it should be noted that the rotational positions shown in fig. 2 and 3 are only schematic and not exhaustive. The seat portion 30 of the child safety seat is adapted to be disposed on the turntable 11, so that the seat portion 30 can be adjusted in the direction under the driving of the turntable 11.

The locking unit 12 includes a moving member 122 and an elastic restoring member (not shown), and the moving member 122 is slidably disposed on the base 10, so that the moving member 122 slides to approach or depart from the turntable 11. The moving member 122 is adapted to be inserted into the positioning groove 111 corresponding to the moving member, so as to lock the turntable 11, and the elastic restoring member is adapted to continuously apply an acting force to the moving member 122 to make it approach the turntable 11.

In the initial state, the moving member 122 is inserted into a positioning groove 111 of the turntable 11, and the turntable 11 is locked; when the external force overcomes the acting force of the elastic reset piece to make the moving piece 122 far away from the turntable 11, the moving piece 122 is separated from the corresponding positioning groove 111, and the turntable 11 can freely rotate relative to the base 10; when removing external force, moving member 122 moves towards carousel 11 under the effect of elasticity piece that resets, it is possible that arbitrary constant head tank 111 of carousel 11 is not relative with moving member 122 this moment, the effect of the elasticity piece that resets of moving member 122 supports in the lateral wall of carousel 11 down, carousel 11 still can free rotation, continue to rotate carousel 11 and make a constant head tank 111 relative with moving member 122, moving member 122 moves towards constant head tank 111 under the effect of elasticity piece that resets, also in moving member 122 inserts constant head tank 111, with carousel 11 locking.

The positioning grooves 111 on the turntable 11 are a working positioning groove 1111 and a pause positioning groove 1112, when the turntable 11 receives a tangential acting force, the acting force applied by the working positioning groove 1111 to the moving member 122 cannot make the moving member 122 slide out of the working positioning groove 1111, and when the tangential acting force received by the turntable 11 is greater than a certain value, the acting force applied by the pause positioning groove 1112 to the moving member 122 makes the moving member 122 slide out of the pause positioning groove 1112. The number of the working positioning grooves 1111 may be the same as or different from the number of the pause positioning grooves 1112, and the distance between two adjacent positioning grooves 111 may be the same or different. When the moving member 122 is inserted into the working positioning slot 1111, the turntable 11 and the seat portion 30 disposed on the turntable 11 are in the working position, and when the moving member 122 is inserted into the pause positioning slot 1112, the turntable 11 and the seat portion 30 disposed on the turntable 11 are in the pause position.

There are two cases of locking of the turntable 11 by the locking unit 12: in the first situation, the locking unit 12 locks the turntable 11 with high stability, and at this time, the moving member 122 is inserted into the working positioning slot 1111, and in this locked state, the operator can only manually slide the moving member 122 to complete unlocking; in the second situation, the locking unit 12 locks the turntable 11 with low stability, and at this time, the moving member 122 is inserted into the pause positioning groove 1112, and in this locking state, the operator can directly act on the moving member 122 to unlock the moving member by sliding, and can also apply a certain tangential acting force to the turntable 11, so that the acting force of the turntable 11 on the moving member 122 can overcome the elastic force of the elastic reset member, and the moving member 122 slides out of the pause positioning groove 1112 to unlock the turntable.

In some embodiments, the working positioning slot 1111 is a straight cylinder extending along the radial direction of the turntable 11, and when the turntable 11 is subjected to a tangential force, the force applied by the working positioning slot 1111 to the moving member 122 does not generate a component force in the sliding direction of the moving member 122, so that the moving member 122 does not slide out of the working positioning slot 1111.

In some embodiments, an outward inclined guide surface is formed at the opening of the pause positioning groove 1112, a distance between two sidewalls of the pause positioning groove 1112 gradually increases from inside to outside, that is, the opening of the pause positioning groove 1112 is shaped like an outer horn, when the tangential acting force applied to the turntable 11 exceeds a certain value, the acting force applied to the moving member 122 by the pause positioning groove 1112 generates a component force in the sliding direction of the moving member 122, so that the moving member 122 can slide out of the pause positioning groove 1112 along the guide surface. Preferably, two sides of an end of the moving member 122 opposite to the pause positioning groove 1112 are also formed with inclined surfaces, and when the moving member 122 is inserted into the pause positioning groove 1112, the inclined surfaces of the moving member 122 are attached to the guide surfaces of the pause positioning groove 1112.

In one embodiment, as shown in fig. 5, the turntable 11 includes two working positioning slots 1111 and two pause positioning slots 1112, the working positioning slots 1111 and the pause positioning slots 1112 are spaced apart from each other, and the positioning slots are distributed along the circumference at equal intervals. At this time, the working position is a position in which the seat portion 30 faces directly forward or directly backward, and at this time, the seat portion 30 provides more safety protection for the child. The parked position is a position in which the seat portion 30 is oriented to the left or right, and the seat portion 30 thus placed provides relatively poor protection to a child, and therefore it is not desirable to keep the seat portion 30 in such a position while the vehicle is traveling, but rotating the seat portion 30 to the parked position facilitates the user to place the child from the door or to care for the child on the seat while the vehicle is stopped.

In one embodiment, as shown in FIG. 6, the base 10 has a turntable mounting cavity 13, and the turntable mounting cavity 13 is used for mounting the turntable 11 therein. As shown in fig. 7, the front end portion 14 of the base 10 is provided with two parallel sliding grooves 141, the two sliding grooves 141 extend from the front end portion 14 of the base 10 to the turntable mounting cavity 13, and two sides of the moving member 122 are slidably disposed in the two sliding grooves 141, so that the moving member 122 can slide back and forth under the limit of the two sliding grooves 141.

As shown in fig. 10, the moving member 122 has an operating end 1221 and a locking end 1222, the operating end 1221 is located at the front end 14 of the base 10, the locking end 1222 extends toward the side wall of the turntable 11, and a user can slide the moving member 122 through the operating end 1221, so as to drive the locking end 1222 to be inserted into the positioning slot 111 located at the side wall of the turntable 11 or separated from the positioning slot 111.

As shown in fig. 9, an operation window 142 is formed on an upper end surface of the front end portion 14 of the base 10, the sliding groove 141 and the moving member 122 are both disposed on a bottom surface of the front end portion 14 of the base 10, and an operation end 1221 of the moving member 122 is opposite to the operation window 142, so that a user can operate the operation end 1221 through the operation window 142. The operating end 1221 is formed with a recess 12211, and a user is adapted to apply a force to the moving member 122 through the recess 12211. When the moving member 122 slides, the groove 12211 moves from one end to the other end of the operation window 142.

The first signal collecting device 121 is a micro switch, as shown in fig. 7, and the first signal collecting device 121 is used for detecting the movement of the moving member 122. A detection cavity 1223 is formed on the moving member 122, one end of the first signal collecting device 121 is fixed on the bottom surface of the base 10, and the other end extends into the detection cavity 1223.

The depth of the working detent 1111 is greater than the depth of the pause detent 1112. When the moving member 122 is inserted into the working positioning groove 1111, the inner wall of the detection cavity 1223 of the moving member 122 acts on the first signal acquisition device 121, so that the first signal acquisition device 121 is in the first state, when the moving member 122 slides outwards from the working positioning groove 1111, the moving member 122 is always separated from the first signal acquisition device 121, and the first signal acquisition device 121 is always in the second state. It should be noted that, when the moving member 122 is inserted into the pause positioning groove 1112, the inner wall of the detection cavity 1223 of the moving member 122 is separated from the first signal acquisition device 121, so that the first signal acquisition device 121 is in the second state at this time.

When the first signal collecting device 121 is in the first state, the central processing unit receives the detection signal that the rotation is in place, and when the first signal collecting device 121 is in the second state, the central processing unit receives the detection signal that the rotation is not in place. In other words, only when the moving member 122 of the locking unit 12 is inserted into the positioning slot 1111, the cpu will receive the detection signal indicating that the locking unit is rotating in place, and the warning device will give the warning signal indicating that the locking unit is not rotating in place in other states.

Further, the ISOFIX mechanism 20 includes an ISOFIX claw 22 and a locking moving member 23, and the locking moving member 23 and the ISOFIX claw 22 are linked. The ISOFIX claws 22 are adapted to be pushed into an ISOFIX interface provided on the car seat by an external force to complete the locking; after unlocking, the ISOFIX pawl 22 is adapted to be released from reset with the ISOFIX interface by a reset member (not shown). The locking movement 23 is linked with the ISOFIX jaw 22. The second signal acquisition device 21 can detect the motion state of the locking motion piece 23, so as to obtain the connection state of the ISOFIX claw 22 and the ISOFIX interface.

Specifically, the second signal pickup device 21 is provided with a motion reed 211. The action reed 211 abuts against the inner end 231 of the locking moving piece 23, and the fixed contact and the movable contact at the tail end of the action reed 211 are connected or disconnected along with the movement of the locking moving piece 23, so that the second signal acquisition device 21 can send out two different detection signals, and the detection of the movement state of the locking moving piece 23 is realized.

In fig. 12, the ISOFIX jack 22 is not in a locked state, the movable contact and the fixed contact at the tail end of the action reed 211 are in an open state in a natural state, and the second signal acquisition device 21 sends a first signal to the central processing unit; in fig. 13, the ISOFIX claw 22 is in a locked state, the locking moving piece 23 moves towards the inside of the ISOFIX mechanism 20 along with the movement of the ISOFIX claw 22 and forms a pushing action on the action reed 211, the action reed 211 makes the fixed contact point and the movable contact point at the tail end of the action reed 211 switch to a connected state under the pushing action of the inner end 231 of the locking moving piece 23, and the second signal acquisition device 21 sends a second signal to the central processing unit.

The child safety seat of the present invention further comprises two insert pieces 80, and a safety belt (not shown in the figure) respectively connected to the buckle mechanism 40 and the two insert pieces 80. The two tabs 80 are adapted to be simultaneously inserted into the buckle mechanism 40 and locked within the buckle mechanism 40 such that locking of the two tabs 80 by the buckle mechanism 40 forms a restraint system for the child.

The catch mechanism 40 includes a catch body 42, a self-locking mechanism 43, a button 44, and an ejection mechanism 45.

The buckle body 42 has two insertion openings and a mounting cavity, and the two insertion pieces 80 are adapted to be inserted into the mounting cavity of the buckle body 42 through the insertion openings.

The self-locking mechanism 43 is arranged in the mounting cavity of the buckle body 42, the self-locking mechanism 43 selectively locks or unlocks the two insertion pieces 80, when no external force acts, the self-locking mechanism 43 can lock the insertion pieces 80 inserted into the mounting cavity, and an operator can apply acting force to the self-locking mechanism 43 through the button 44 to enable the self-locking mechanism 43 to unlock the insertion pieces 80. In some embodiments, the self-locking mechanism 43 includes a rotating member 431 and an elastic member (not shown in the figures), the rotating member 431 is rotatably disposed in the buckle body 42, the elastic member continuously applies a force to the rotating member 431 to rotate the rotating member to the locking position, and the button 44 is engaged with the rotating member 431, so that the rotating member 431 can be rotated to the unlocking position against the elastic force of the elastic member by operating the button 44. The two insertion pieces 80 are respectively provided with concave-convex structures matched with each other, so that when one insertion piece 80 is locked, the other insertion piece 80 is also locked.

The ejecting mechanism 45 is arranged in the buckle body 42, the ejecting mechanism 45 is opposite to the inserting sheet 80 inserted into the mounting cavity, when the inserting sheet 80 is inserted to a position which can be locked by the self-locking mechanism 43, the inserting sheet 80 compresses the ejecting mechanism 45, the ejecting mechanism 45 continuously applies acting force to the inserting sheet 80 to enable the inserting sheet 80 to move outwards, but under the limit of the self-locking mechanism 43, the inserting sheet 80 cannot move; when the self-locking mechanism 43 is unlocked by the button 44, the two insertion pieces 80 are ejected out of the buckle body 42 under the action of the ejection mechanism 45.

The concrete structure of buckle body 42, self-locking mechanism 43, button 44 and pop-up mechanism 45 is prior art, the utility model discloses no longer detail.

The third signal acquisition device 41 is a magnetic-sensitive switch arranged in the buckle body 42, and the ejection mechanism 45 is provided with a magnet 451. When the distance between the magnet 451 and the third signal acquisition device 41 is less than the preset value, the magnet 451 triggers the third signal acquisition device 41. The third signal acquisition device 41 is in signal connection with the central processing unit, and the central processing unit receives a detection signal indicating that the third signal acquisition device 41 is engaged in place when triggered and receives a detection signal indicating that the third signal acquisition device 41 is not engaged in place when not triggered.

When the two inserting pieces 80 are inserted into the buckle body 42, the inserting pieces 80 continuously compress the ejecting mechanism 45, so that the magnet 451 on the ejecting mechanism 45 is continuously close to the third signal acquisition device 41, when the inserting pieces 80 move to the position locked by the position self-locking mechanism 43, the distance between the magnet 451 and the third signal acquisition device 41 is just smaller than the preset value, and at this time, the third signal acquisition device 41 is triggered. That is, as long as the insert chip 80 is not moved to the position where it can be locked by the self-locking mechanism 43, the third signal acquisition device 41 will not be triggered, so that the change of the state of the third signal acquisition device 41 can be used to detect whether the insert chip 80 is inserted in place.

In some embodiments, the pop-up mechanism 45 includes an elastic restoring member 452 and a contact 453, the magnet 451 is disposed on the contact 453, the elastic restoring member 452 is disposed in the mounting cavity of the clip body 42, the contact 453 is movably disposed in the mounting cavity of the clip body 42, and the elastic restoring member 452 continuously applies a force to the contact 453 to move the contact to the pop-up position, that is, the elastic restoring member 452 continuously applies a force to the contact 453 to move the contact from the locking position. When the pop-up mechanism 45 is in the locking position, once the insert 80 moves outward, the elastic restoring member 452 moves the contact 453 away from the locking position, that is, the magnet 451 on the contact 453 is away from the third signal acquisition device 41, so that the distance between the magnet 451 and the third signal acquisition device 41 exceeds the preset distance, and the magnet 451 does not trigger the third signal acquisition device 41.

It should be noted that the pop-up position of the contact 453 of the present invention is the initial position of the contact 453 when the contact is not acted by the insert 80; the locking position of the contact 453 refers to a position to which the contact 453 is compressed by the insert 80 when the insert 80 is locked by the self-locking mechanism 43, and a distance between a magnet on the contact 453 and the third signal acquisition device 41 is smaller than a preset value.

Further, the support leg structure 50 includes a base 52, a floor 53, and a support tube assembly 54. The base 52 is mounted to the lower end of a support tube assembly 54. The support tube assembly 54 is adapted to be connected to the body of the child safety seat to provide support to the body of the child safety seat so that the child safety seat can be more securely mounted in the vehicle and the base 52 is adapted to contact the vehicle floor.

The base 52 has a receiving cavity, and the fourth signal acquisition device is disposed in the receiving cavity. The base plate 53 is movably connected to the bottom of the base 52. The fourth signal acquisition device is provided with an action reed which switches between on and off states along with the movement of the bottom plate 53.

In the non-supporting state, the bottom plate 53 is not in stressed contact with the automobile platform, at the moment, the action reed is in a disconnected state, and the fourth signal acquisition device sends an out-of-place instruction to the central processing unit; in a supporting state, the bottom plate 53 is in stressed contact with the automobile platform, the bottom plate 53 moves towards the inside of the accommodating cavity under the action of external force and extrudes the action reed to enable the action reed to be connected, and after the action reed is connected, the fourth signal acquisition device sends an in-place instruction to the central processing unit.

It should be noted that the fifth signal collecting device 71 includes at least two sensors 711 connected in parallel, the two sensors are symmetrically disposed on two sides of the central axis of the cushion portion 70, the central processing unit is electrically connected to the two sensors 711, and the two sensors 711 are adapted to detect whether a child is seated or not and send detection signals to the central processing unit.

Further, the sensor 711 includes a retractable support rod, and when the support rod is not under the action of gravity, the support rod is in a supporting state, and at this time, the fifth signal acquisition device 71 is not triggered to send out a detection signal representing that the child is seated; when the supporting rod is pressed down under the action of gravity, the fifth signal acquisition device 71 is triggered to send out a detection signal representing that the child is seated.

It is worth mentioning that, two sensors 711 are connected in parallel, and set up the both sides at cushion portion 70 axis symmetrically, through such setting, even the inclined to one side phenomenon appears sitting on cushion portion 70 in children, the sensor 711 on any one side of cushion portion 70 axis detects that children are sat into and can both trigger fifth signal acquisition device 71 and send the detection signal that represents children have sat into, that is to say, as long as trigger any one side sensor 711 after children are sat into and can both make central processing unit receive the detection signal that represents children have sat into, can effectively avoid central processing unit to carry out the wrong report police like this, the rate of accuracy that children's safety seat detection of sitting into has been improved greatly.

It is easily understood that the number of the sensors 711 is not limited in the present invention, and in the present embodiment, the number of the sensors 711 is implemented as two, and in other possible preferred embodiments, the number of the sensors 711 may also be implemented as an even number, such as 4, 6, 8, etc., on the premise that all the sensors 711 are connected in parallel and symmetrically arranged on both sides of the central axis of the seat cushion portion 70.

Preferably, the two sensors 711 are implemented as pressure sensors in the present embodiment.

Preferably, in this embodiment, the two sensors 711 are disposed near the outer edge 72 of the cushion part 70. No matter the child is inclined to any side of the cushion part 70, the leg of the child can contact the outer edge 72 of the cushion part 70, and the arrangement is more suitable for the sitting posture of the child, so that the detection accuracy can be further improved.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can be modified or altered without departing from the principles.

Claims

1. A child safety seat, comprising:

2. The child safety seat according to claim 1, further comprising a cushion portion, wherein the cushion portion is disposed on the seat portion for seating a child, the cushion portion includes a fifth signal acquisition device for detecting whether the child is seated, the fifth signal acquisition device is connected to the central processing unit, if the fifth signal acquisition device detects that the child is seated, the central processing unit alarms according to all detection signals of the first signal acquisition device, the second signal acquisition device, the third signal acquisition device, and the fourth signal acquisition device, and if the fifth signal acquisition device detects that the child is not seated, the central processing unit selectively alarms according to the first signal acquisition device, the second signal acquisition device, the third signal acquisition device, the fourth signal acquisition device, and the fourth signal acquisition device, And one or more detection signals in the fourth signal acquisition device give an alarm.

3. The child safety seat according to claim 2, wherein the alarm device includes a buzzer and a plurality of indicator lights, detection signals of the first signal acquisition device, the second signal acquisition device, the third signal acquisition device, the fourth signal acquisition device, and the fifth signal acquisition device respectively correspond to one indicator light for alarm prompting, and the indicator lights are disposed at a front end portion of the base.

4. The child safety seat according to claim 3, wherein the side wall of the turntable has a plurality of positioning slots along the circumferential direction, the plurality of positioning slots including at least one working positioning slot and at least one pause positioning slot;

5. The child safety seat according to claim 4, wherein the depth of the working positioning groove is greater than the depth of the pause positioning groove, the micro switch is disposed on a displacement path of the moving member, when the moving member completely enters the working positioning groove, the moving member acts on the micro switch to enable the micro switch to detect that the moving member is located in the working positioning groove, and when the moving member does not completely enter the working positioning groove or the moving member enters the pause positioning groove, the moving member does not act on the micro switch.

6. The child safety seat according to claim 3, wherein the ISOFIX device comprises an ISOFIX claw and a locking moving part, the locking moving part and the ISOFIX claw are linked, the second signal acquisition device is provided with an action reed, the action reed is switched on or switched off along with the movement of the locking moving part, so that the second signal acquisition device detects the movement state of the locking moving part, and the second signal acquisition device sends a detection signal to the central processing unit to enable the central processing unit to judge the connection state of the ISOFIX claw.

7. The child safety seat according to claim 3, wherein the buckle mechanism is configured to lock two blades simultaneously, and comprises a buckle body adapted to mount the blades, a self-locking mechanism configured to lock the blades, a button configured to unlock the self-locking mechanism, and an eject mechanism configured to eject the blades out of the buckle body, the third signal acquisition device is a magnetic sensitive switch disposed in the buckle body, the eject mechanism is provided with a magnet, when a distance between the magnet and the magnetic sensitive switch is smaller than a predetermined value, the magnet triggers the magnetic sensitive switch, the central processing unit receives a detection signal indicating that the blades are locked in place when the magnetic sensitive switch is triggered, and receives a detection signal indicating that the blades are not locked in place when the magnetic sensitive switch is not triggered; when the inserting sheet is locked by the self-locking mechanism, the inserting sheet compresses the ejecting mechanism and enables the distance between the magnet and the magnetic sensitive switch to be smaller than a preset value, and when the inserting sheet is not locked, the ejecting mechanism is not pressed, so that the distance between the magnet and the magnetic sensitive switch is larger than a preset value.

8. The child safety seat according to claim 7, wherein the ejection mechanism includes an elastic return member and a contact member, the magnet is disposed in the contact member, the elastic return member is disposed in the latch body, the contact member is movably disposed in the latch body, and the elastic return member applies a force to keep the contact member away from the latched position.

9. The child safety seat according to claim 3, wherein the supporting leg structure comprises a base, a bottom plate, an indicator light, and a supporting tube assembly, wherein the base is connected to a lower end of the supporting tube assembly, the base has a receiving cavity, the fourth signal acquisition device is disposed in the receiving cavity, the bottom plate is movably connected to a bottom of the base, the fourth signal acquisition device is provided with an action reed, and the action reed switches between an on state and an off state along with the movement of the bottom plate;

10. The child safety seat according to claim 3, wherein the fifth signal collecting device comprises at least two sensors connected in parallel, the two sensors are symmetrically arranged on two sides of the central axis of the cushion portion, the central processing unit is electrically connected to the two sensors, and the two sensors are adapted to detect whether a child is seated and send a detection signal to the central processing unit.