CN216545866U

CN216545866U - Child safety seat base structure and child safety seat

Info

Publication number: CN216545866U
Application number: CN202123202123.8U
Authority: CN
Inventors: 胡承鹏; 龚剑
Original assignee: Hubei Yangtian Plastic Products Co ltd
Current assignee: Xiaogan Shangli Children's Products Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-17
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a child safety seat base structure and a child safety seat, and relates to the technical field of child safety seats. The child safety seat base structure comprises a first lock hook, a second lock hook, a locking mechanism and a release piece; the first locking hook and the second locking hook are respectively used for hooking a front fixing shaft and a rear fixing shaft at the bottom of a seat body of the child safety seat, the first locking hook and the second locking hook are abutted to a locking mechanism, and the locking mechanism is used for limiting the first locking hook and the second locking hook to rotate; the unlocking piece is connected with the locking mechanism and used for driving the locking mechanism to move so as to enable the first locking hook and the second locking hook to be separated from the locking mechanism. According to the child safety seat base structure, the unlocking piece and the locking mechanism are matched with each other, the first locking hook and the second locking hook can be unlocked simultaneously, so that the operation can be simplified, and the use convenience is improved.

Description

Child safety seat base structure and child safety seat

Technical Field

The utility model relates to the technical field of child safety seats, in particular to a child safety seat base structure and a child safety seat.

Background

Because split type children's safety seat uses more convenient, economy, therefore split type children's safety seat's application is more and more extensive at present, especially the complete set product assembly of the base is shared to children's safety seat of different groups is favored by the market.

The split type child safety seat comprises a seat body and a base, wherein the seat body is detachably mounted on the base through locking structures such as an elastic clamping hook. Specifically, the bottom of the seat body is provided with a front fixing shaft and a rear fixing shaft which are parallel to each other, and the base is provided with a front locking structure for locking the front fixing shaft and a rear locking structure for locking the rear fixing shaft. However, when the seat body is mounted and dismounted on the base, the front locking structure and the rear locking structure need to be unlocked respectively, so that the operation is complex, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a child safety seat base structure and a child safety seat, and aims to solve the technical problems that when a seat body is mounted and dismounted on a base, the front locking structure and the rear locking structure are required to be respectively unlocked, so that the operation is complex and the use is inconvenient.

In a first aspect, the present invention provides a child safety seat base structure, comprising a first latch hook, a second latch hook, a locking mechanism and a release member;

the first locking hook and the second locking hook are respectively used for hooking a front fixing shaft and a rear fixing shaft at the bottom of a seat body of the child safety seat, the first locking hook and the second locking hook are both abutted against the locking mechanism, and the locking mechanism is used for limiting the first locking hook and the second locking hook to rotate;

the unlocking piece is connected with the locking mechanism and used for driving the locking mechanism to move so as to enable the first locking hook and the second locking hook to be separated from the locking mechanism.

In an optional embodiment, the locking mechanism further comprises a reset piece, the reset piece is connected with the locking mechanism, and the reset piece is used for storing energy when the locking mechanism is driven by the release piece to move.

In an alternative embodiment, the device further comprises a first elastic member and a second elastic member;

one end of the first elastic piece is connected with the first locking hook, the other end of the first elastic piece is fixed in position, and the first elastic piece is used for storing energy when the first locking hook is abutted to the locking mechanism;

one end of the second elastic piece is connected with the second locking hook, the other end of the second elastic piece is fixed in position, and the second elastic piece is used for storing energy when the second locking hook is abutted to the locking mechanism.

In an optional embodiment, the locking device further comprises a supporting framework, and the first locking hook and the second locking hook are hinged to the supporting framework;

the first lock hook and the second lock hook respectively comprise a hook side and a back side which are opposite to each other, a first locking groove is formed in the back side of the first lock hook, and a second locking groove is formed in the back side of the second lock hook;

the locking mechanism comprises a first ejector rod and a second ejector rod, the rod body of the first ejector rod and the rod body of the second ejector rod are hinged to the support framework, one end of the first ejector rod abuts against the first locking groove, and the other end of the first ejector rod is connected with the unlocking piece; one end of the second ejector rod is abutted to the second locking groove, and the other end of the second ejector rod is connected with the unlocking piece.

In an optional implementation manner, the first ejector rod and the second ejector rod are connected to the unlocking piece through a transmission mechanism, and the transmission mechanism is used for driving the first ejector rod and the second ejector rod to rotate on the supporting framework under the driving of the unlocking piece, so that the end portion of the first ejector rod is withdrawn from the first locking groove, and the end portion of the second ejector rod is withdrawn from the second locking groove.

In an alternative embodiment, the transmission mechanism comprises a pull rod, the end of the first ejector rod far away from the first locking groove is connected with the pull rod, and the end of the second ejector rod far away from the second locking groove is connected with the pull rod;

the pull rod is connected with the release piece.

In an optional embodiment, a first locking groove is further formed in the back side of the first locking hook, and a second locking groove is further formed in the back side of the second locking hook;

the first clamping groove is used for abutting against the end of the first ejector rod after the end part, far away from the unlocking piece, of the first ejector rod is withdrawn from the first locking groove, and the second clamping groove is used for abutting against the end of the second ejector rod after the end part, far away from the unlocking piece, of the second ejector rod is withdrawn from the second locking groove.

In an optional embodiment, the lock further comprises a lock indicator and a shell, wherein the lock indicator is provided with a lock mark and an unlock mark, and the shell is provided with an indicating hole which can expose the lock mark and the unlock mark alternatively;

the locking indicator is connected with the unlocking piece and is arranged in the shell, and the locking indicator is used for moving under the driving of the unlocking piece so as to switch the locking mark and the unlocking mark at the indicating hole.

In an optional embodiment, the lock further comprises a first lock hook sleeve and a second lock hook sleeve, wherein the first lock hook sleeve and the second lock hook sleeve are both made of flexible materials;

the first lock hook sleeve is arranged on one side, capable of being hooked with the front fixing shaft, of the first lock hook, and the second lock hook sleeve is arranged on one side, capable of being hooked with the rear fixing shaft, of the second lock hook.

In a second aspect, the present invention provides a child safety seat comprising a child safety seat base structure according to any one of the preceding embodiments.

The child safety seat base structure provided by the utility model comprises a first lock hook, a second lock hook, a locking mechanism and a release piece; the first locking hook and the second locking hook are respectively used for hooking a front fixing shaft and a rear fixing shaft at the bottom of a seat body of the child safety seat, the first locking hook and the second locking hook are both abutted to the locking mechanism, and the locking mechanism is used for limiting the first locking hook and the second locking hook to rotate; the unlocking piece is connected with the locking mechanism and used for driving the locking mechanism to move so as to enable the first locking hook and the second locking hook to be separated from the locking mechanism. When the seat body of the child safety seat is arranged on the child safety seat base structure, the lock release piece can be used for driving the locking mechanism to move, so that the first lock hook and the second lock hook are separated from the locking mechanism, and one-key unlocking of the first lock hook and the second lock hook is realized. After the first lock hook and the second lock hook are separated from the locking mechanism, the first lock hook and the second lock hook are both in an unlocking state, the first lock hook and the second lock hook can both rotate to an opening state, and then the process of mounting and dismounting the seat body can be achieved. For making first latch hook and the second latch hook after the unblock can rotate to the open mode automatically, one side of first latch hook and second latch hook all can be connected with elastic component such as spring, when first latch hook and second latch hook all are in the lock state, above-mentioned elastic component is in the energy storage state, consequently after first latch hook and second latch hook all are unblock, above-mentioned elastic component can release and drive first latch hook and second latch hook and rotate to the open mode, thereby the operation process of this children's safety seat base structure of simplification that can be further, promote the convenience of use.

Compared with the prior art, the child safety seat base structure provided by the utility model has the advantages that the unlocking piece and the locking mechanism are matched with each other, so that one-key unlocking of the first locking hook and the second locking hook can be realized, the operation can be simplified, and the use convenience is improved.

The child safety seat provided by the utility model comprises the child safety seat base structure, so that the child safety seat provided by the utility model has the same beneficial effects as the child safety seat base structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a top view of a child safety seat base structure provided by an embodiment of the present invention;

FIG. 2 is a partial schematic structural view of a base structure of a child safety seat provided in an embodiment of the utility model;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 5 is a cross-sectional view of a child safety seat base structure provided in an unlocked state in accordance with an embodiment of the present invention.

Icon: 1-a first latch hook; 10-a first elastic member; 11-a first locking groove; 12-a first card slot; 13-a first shackle sleeve; 2-a second latch hook; 20-a second elastic member; 21-a second locking slot; 22-a second card slot; 23-a second shackle sleeve; 3-a locking mechanism; 30-a first ejector rod; 31-a second ejector rod; 4-a release member; 40-a connector; 5-supporting the framework; 50-grooves; 51-a first arcuate aperture; 52-a second arcuate aperture; 6-a reset piece; 7-a bottom support; 8-a transmission mechanism; 80-a pull rod; 81-a transmission arm; 9-a locking indicator; 90-torsion spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Example (b):

as shown in fig. 1 to 5, the child safety seat base structure provided in the present embodiment includes a first locking hook 1, a second locking hook 2, a locking mechanism 3, and a release member 4; the first locking hook 1 and the second locking hook 2 are respectively used for hooking a front fixing shaft and a rear fixing shaft at the bottom of a seat body of the child safety seat, the first locking hook 1 and the second locking hook 2 are both abutted against a locking mechanism 3, and the locking mechanism 3 is used for limiting the first locking hook 1 and the second locking hook 2 to rotate; the unlocking piece 4 is connected with the locking mechanism 3, and the unlocking piece 4 is used for driving the locking mechanism 3 to move so as to separate the first locking hook 1 and the second locking hook 2 from the locking mechanism 3.

When the seat body of the child safety seat is arranged on the child safety seat base structure, the lock release member 4 can be used for driving the locking mechanism 3 to move, so that the first lock hook 1 and the second lock hook 2 are separated from the locking mechanism 3, and one-key unlocking of the first lock hook 1 and the second lock hook 2 is realized. After the first lock hook 1 and the second lock hook 2 are separated from the locking mechanism 3, the first lock hook 1 and the second lock hook 2 are both in an unlocking state, and at the moment, the first lock hook 1 and the second lock hook 2 can both rotate to an opening state, so that the process of mounting and dismounting the seat body can be realized.

It should be noted that the base structure of the child safety seat provided in this embodiment may further include a supporting frame 5, and the first locking hook 1 and the second locking hook 2 may be both hinged to the supporting frame 5 through a fastener such as a screw or a rivet. As shown in fig. 2 and 3, a groove 50 may be respectively formed at a side of the support frame 5 facing the first locking hook 1 and a side facing the second locking hook 2, the first locking hook 1 and the second locking hook 2 may respectively match with the groove 50 to form an approximately annular space capable of locking the front fixing shaft and the rear fixing shaft, and when the first locking hook 1 and the second locking hook 2 rotate to an open state, both the first locking hook 1 and the second locking hook 2 are far away from the groove 50 to open the approximately annular space, so that the front fixing shaft and the rear fixing shaft may respectively enter the first locking hook 1 and the second locking hook 2.

For making first latch hook 1 and second latch hook 2 after the unblock can rotate to the open mode automatically, one side of first latch hook 1 and second latch hook 2 all can be connected with elastic component such as spring, when first latch hook 1 and second latch hook 2 all are in the locking state, above-mentioned elastic component is in the energy storage state, consequently after first latch hook 1 and second latch hook 2 all are unblocked, above-mentioned elastic component can release energy and drive first latch hook 1 and second latch hook 2 and rotate to the open mode, thereby the operation process of this children's safety seat base structure of simplification that can further promote the convenience of use.

Compared with the prior art, the child safety seat base structure that this embodiment provided mutually supports through release 4 and locking mechanical system 3, can realize the key unblock to first latch hook 1 and second latch hook 2 to can the simplified operation, promote the use convenience.

In addition, in order to enable the first locking hook 1 and the second locking hook 2 to return to the locking state again, the first locking hook 1 and the second locking hook 2 can be rotated reversely to return to the original position manually or by using the self weight of the seat body in the process of installing the seat body, and then the locking mechanism 3 can be driven to move reversely by using the releasing action of the releasing piece 4 or the energy storage piece such as a spring connected to one side of the locking mechanism 3, so that the first locking hook 1 and the second locking hook 2 are abutted to the locking mechanism 3, and the first locking hook 1 and the second locking hook 2 are locked again.

In order to achieve the reverse movement of the locking mechanism 3 and further improve the convenience of use, as shown in fig. 3, the base structure of the child safety seat of the present embodiment preferably further includes a reset piece 6, the reset piece 6 is connected with the locking mechanism 3, and the reset piece 6 is used for storing energy when the locking mechanism 3 is driven by the release piece 4 to move.

When the first locking hook 1 and the second locking hook 2 need to be unlocked and the release piece 4 is pulled, the release piece 4 can drive the locking mechanism 3 to move, and then the locking mechanism 3 can drive the reset piece 6 to move, so that the reset piece 6 can store energy. When the first locking hook 1 and the second locking hook 2 need to return to the original positions and be locked again, the unlocking element 4 can be released and the first locking hook 1 and the second locking hook 2 can return to the original positions, and at the moment, the locking mechanism 3 is not pulled by the unlocking element 4 any more, and can return to the original positions under the elastic recovery action of the resetting element 6.

It can be seen that the piece 6 that resets can further simplify the operation process of this child safety seat base structure, promotes the convenience of use of this child safety seat base structure.

In this embodiment, the base structure of the child safety seat may further include a bottom bracket 7, the supporting frame 5 is fixed on the bottom bracket 7, the unlocking member 4 may be installed on the bottom bracket 7 in a sliding connection manner, when the base structure of the child safety seat further includes a housing for covering the bottom bracket 7 and the supporting frame 5, the housing may further be provided with a through hole, the unlocking member 4 is located in the through hole and can move in the through hole, and the through hole of the housing may limit a moving stroke of the unlocking member 4.

Wherein, the reset element 6 can adopt an elastic element such as a helical spring.

As shown in fig. 4 and 5, the base structure of the child safety seat of the present embodiment further includes a first elastic member 10 and a second elastic member 20; one end of the first elastic element 10 is connected with the first locking hook 1, the other end of the first elastic element is fixed, and the first elastic element 10 is used for storing energy when the first locking hook 1 is abutted to the locking mechanism 3; one end of the second elastic element 20 is connected with the second locking hook 2, and the other end is fixed, and the second elastic element 20 is used for storing energy when the second locking hook 2 abuts against the locking mechanism 3.

Because the first elastic element 10 stores energy when the first locking hook 1 abuts against the locking mechanism 3, when the first locking hook 1 is separated from the locking mechanism 3, the first locking hook 1 is no longer subjected to the abutting force of the locking mechanism 3, and the first elastic element 10 can release energy and drive the first locking hook 1 to rotate, so that the first locking hook 1 is far away from the groove 50 of the supporting framework 5, and the automatic opening process of the first locking hook 1 is realized. Similarly, since the second elastic element 20 stores energy when the second locking hook 2 abuts against the locking mechanism 3, when the second locking hook 2 is separated from the locking mechanism 3, the second locking hook 2 is no longer under the abutting force of the locking mechanism 3, and the second elastic element 20 can release energy and drive the second locking hook 2 to rotate, so that the second locking hook 2 is far away from the groove 50 of the supporting framework 5, and the automatic opening process of the second locking hook 2 is realized.

It can be seen that the first elastic element 10 and the second elastic element 20 can further simplify the operation of the base structure of the child safety seat, and improve the convenience of the base structure of the child safety seat.

As shown in fig. 1 to 5, the base structure of the child safety seat provided in the present embodiment further includes a supporting frame 5, and the first locking hook 1 and the second locking hook 2 are both hinged on the supporting frame 5; the first locking hook 1 and the second locking hook 2 respectively comprise a hooking side and a back side which are back to back, the back side of the first locking hook 1 is provided with a first locking groove 11, and the back side of the second locking hook 2 is provided with a second locking groove 21; the locking mechanism 3 comprises a first ejector rod 30 and a second ejector rod 31, the rod body of the first ejector rod 30 and the rod body of the second ejector rod 31 are hinged on the support framework 5, one end of the first ejector rod 30 is abutted against the first locking groove 11, and the other end of the first ejector rod is connected with the unlocking piece 4; one end of the second push rod 31 is abutted to the second locking groove 21, and the other end is connected with the release piece 4.

Fig. 4 is a cross-sectional view showing the states of the structures when the child safety seat base structure is in a locked state, and as shown in fig. 4, one end of the first push rod 30 abuts against the first locking groove 11, one end of the second push rod 31 abuts against the second locking groove 21, and due to the abutting interaction of the first push rod 30 and the second push rod 31, both the first locking hook 1 and the second locking hook 2 are fixed and cannot rotate freely.

When the first locking hook 1 and the second locking hook 2 need to be in the unlocking state shown in fig. 5, the unlocking element 4 can be used for driving the first ejector rod 30 and the second ejector rod 31 to rotate on the supporting framework 5, so as to drive the end portion of the first ejector rod 30 to withdraw from the first locking groove 11 and drive the end portion of the second ejector rod 31 to withdraw from the second locking groove 21, and therefore the mutual separation of the locking mechanism 3 and the first locking hook 1 and the mutual separation of the locking mechanism 3 and the second locking hook 2 are achieved.

In the present embodiment, an end of the first elastic element 10 away from the first locking hook 1 may be fixed on the supporting frame 5, and an end of the second elastic element 20 away from the second locking hook 2 may also be fixed on the supporting frame 5.

As shown in fig. 4, when one end of the first plunger 30 abuts against the first locking groove 11, the first elastic element 10 is in a stretched state, and at this time, the first elastic element 10 is charged with energy. When one end of the second push rod 31 abuts against the second locking groove 21, the second elastic element 20 is in a stretching state, and the second elastic element 20 is charged with energy. As shown in fig. 5, after the end of the first push rod 30 is withdrawn from the first locking groove 11, the first elastic element 10 can be shortened by elastic recovery to drive the first locking hook 1 to rotate on the supporting frame 5 to be in an open state. After the end of the second rod 31 is withdrawn from the second locking groove 21, the second elastic element 20 can be shortened under the elastic recovery action so as to drive the second locking hook 2 to rotate on the supporting framework 5 to be in an open state.

Wherein the first locking groove 11 and the second locking groove 21 are used to promote the stability of the abutment between the first locking hook 1 and the first push rod 30 and between the second locking hook 2 and the second push rod 31, respectively.

Supporting frame 5 is then used for promoting for first latch hook 1, second latch hook 2, first ejector pin 30 and second ejector pin 31 and supports, as shown in fig. 1, for the installation stability who promotes this children's safety seat base structure and seat body, supporting frame 5 can be two, and two supporting frame 5 symmetries set up on bottom sprag 7. Correspondingly, each supporting framework 5 can be hinged with a first locking hook 1, a second locking hook 2, a first top rod 30 and a second top rod 31.

Further, as shown in fig. 2, the supporting frame 5 corresponding to the first push rod 30 and the first latch hook 1 and the second push rod 31 and the second latch hook 2 may have an accommodating groove extending from the top of the supporting frame 5 to the inside thereof, the first push rod 30 and the first latch hook 1 are hinged in the accommodating groove corresponding thereto through fasteners such as rivets or screws, respectively, and the second push rod 31 and the second latch hook 2 are hinged in the accommodating groove corresponding thereto through fasteners such as rivets or screws, respectively. The groove 50 of the supporting frame 5 opposite to the first locking hook 1 and the second locking hook 2 is located at one side of the receiving groove.

Further, as shown in fig. 2 and 3, the first push rod 30 and the second push rod 31 are connected to the release element 4 through the transmission mechanism 8, and the transmission mechanism 8 is used for driving the first push rod 30 and the second push rod 31 to rotate on the supporting framework 5 under the driving of the release element 4, so that the end of the first push rod 30 is withdrawn from the first locking groove 11, and the end of the second push rod 31 is withdrawn from the second locking groove 21.

The transmission mechanism 8 is used for transmitting the unlocking force received by the unlocking piece 4 to the locking mechanism 3, so that the structures of the unlocking piece 4 and the locking mechanism 3 can be simplified and the layout of the unlocking piece 4 and the locking mechanism 3 can be more reasonable on the premise of ensuring the transmission of the force between the locking mechanism 3 and the unlocking piece 4.

As shown in fig. 3, one end of the reset element 6 may be fixed on the supporting framework 5, and the other end may be connected with the transmission mechanism 8, so as to be connected with the locking mechanism 3 through the transmission mechanism 8.

As shown in fig. 2, the transmission mechanism 8 comprises a pull rod 80, the end of the first push rod 30 far away from the first locking groove 11 is connected with the pull rod 80, and the end of the second push rod 31 far away from the second locking groove 21 is connected with the pull rod 80; the pull rod 80 is connected to the release member 4.

The end of the first top rod 30 far from the first locking groove 11 can be hinged to the pull rod 80 through a rivet, a screw or other fasteners, and the end of the second top rod 31 far from the second locking groove 21 can also be hinged to the pull rod 80 through a rivet, a screw or other fasteners.

As shown in fig. 2, when the user pulls the release element 4 to move the release element 4 in a direction away from the pull rod 80, the release element 4 pulls the pull rod 80 to move along the length direction thereof, so as to drive the first push rod 30 and the second push rod 31 connected to the pull rod 80 to rotate, such that the end of the first push rod 30 away from the pull rod 80 is withdrawn from the first locking groove 11, and the end of the second push rod 31 away from the pull rod 80 is withdrawn from the second locking groove 21.

When there are two supporting frames 5, there are two corresponding pull rods 80, and in order to improve the synchronization of the release unit 4 to the driving process of the two pull rods 80, as shown in fig. 2, the pull rods 80 and the release unit 4 may be connected by a connecting member 40 having two cantilevers. Specifically, one side of the connecting member 40 is connected to the unlocking member 4, and the other side is provided with two cantilevers, and the two pull rods 80 are connected to the two cantilevers in a one-to-one correspondence manner.

The end of the first top rod 30 far from the first locking groove 11 is connected with the pull rod 80, and the end of the second top rod 31 far from the second locking groove 21 is connected with the pull rod 80, so that the pull rod 80 can synchronously transmit the unlocking force transmitted by the unlocking piece 4 to the first top rod 30 and the second top rod 31, and one-key unlocking can be realized.

In order to prevent the movement of the pull rod 80 from being interfered by the supporting frame 5, the pull rod 80 is preferably disposed on one side of the supporting frame 5.

Further, as shown in fig. 2 and 3, the hooking side of the first locking hook 1 and the hooking side of the second locking hook 2 face away from each other; the transmission mechanism 8 further comprises a transmission arm 81, and the end part of the first ejector rod 30 far away from the first locking groove 11 is connected with the pull rod 80 through the transmission arm 81; one end of the transmission arm 81 is hinged with the end part of the first top rod 30 far away from the first locking groove 11, the other end is hinged with the pull rod 80, and the arm body of the transmission arm 81 is hinged on the support framework 5.

As shown in fig. 2 and 3, the supporting frame 5 may further include a first arc-shaped hole 51 and a second arc-shaped hole 52, an end of the first push rod 30 away from the first locking groove 11 and an end of the driving arm 81 away from the pull rod 80 may be slidably connected to the first arc-shaped hole 51 by a fastener such as a screw or a rivet, and an end of the second push rod 31 away from the second locking groove 21 and an end of the pull rod 80 close to the release member 4 may be slidably connected to the second arc-shaped hole 52 by a fastener such as a screw or a rivet.

The extending direction of the first arc-shaped hole 51 is the same as the movement track of the end part of the first push rod 30 far away from the first locking groove 11 when the first push rod 30 rotates on the supporting framework 5. Correspondingly, the extending direction of the second arc-shaped hole 52 is the same as the movement track of the end part of the second push rod 31 far away from the second locking groove 21 when the second push rod 31 rotates on the supporting framework 5.

The first arc-shaped hole 51 and the second arc-shaped hole 52 can not only improve the stability of the first ejector rod 30 and the second ejector rod 31 in a locking state, but also limit the rotation process of the first ejector rod 30 and the second ejector rod 31.

If the hooking side of the first locking hook 1 and the hooking side of the second locking hook 2 are opposite to each other, no matter the child safety seat base structure is switched from the locking state to the unlocking state or from the unlocking state to the locking state, the first locking hook 1 and the second locking hook 2 both perform synchronous reverse rotation, and the first push rod 30 and the second push rod 31 both perform synchronous reverse rotation. In order to ensure the synchronous and reverse rotation of the first push rod 30 and the second push rod 31, the end of the first push rod 30 far away from the first locking groove 11 is preferably connected with the pull rod 80 through a transmission arm 81.

Specifically, when the child safety seat base structure is switched from the locked state to the unlocked state, as shown in fig. 2, 3, 4 and 5, the release member 4 may be pulled toward the right first, at this time, the release member 4 drives the connecting member 40 and the pull rod 80 to move rightward, and further the pull rod 80 drives the end of the transmission arm 81 far away from the first push rod 30 to move rightward and the end of the second push rod 31 far away from the second locking groove 21 to move rightward. Since the body of the transmission arm 81 is hinged on the support frame 5 and the body of the second push rod 31 is hinged on the support frame 5, when the end of the transmission arm 81 far away from the first push rod 30 and the end of the second push rod 31 far away from the second locking groove 21 move rightwards, the transmission arm 81 and the second push rod 31 can rotate anticlockwise on the support frame 5. Then the driving arm 81 drives the end of the first push rod 30 far from the first locking groove 11 to move leftwards through the end connected with the first push rod 30, and the end of the second push rod 31 close to the second locking groove 21 withdraws from the second locking groove 21. After the first push rod 30 moves away from the end of the first locking groove 11 to the left, since the rod body of the first push rod 30 is hinged on the supporting frame 5, the first push rod 30 rotates clockwise on the supporting frame 5, so that the end of the first push rod close to the first locking groove 11 is withdrawn from the first locking groove 11.

After the end portion of the first push rod 30 close to the first locking groove 11 is withdrawn from the first locking groove 11, the first elastic member 10 is shortened to release energy to drive the first locking hook 1 to rotate clockwise, so that the first locking hook 1 is opened, and the first locking hook 1 is unlocked. Correspondingly, after the end portion of the second ejector rod 31 close to the second locking groove 21 is withdrawn from the second locking groove 21, the second elastic element 20 can be shortened to release energy to drive the second locking hook 2 to rotate counterclockwise, so that the second locking hook 2 is opened, and the second locking hook 2 is unlocked.

When installing the seat body in this child safety seat base structure and need to make this child safety seat base structure switch to the locking state from the unblock state, the user can directly lay the seat body in this child safety seat base structure, the seat body can utilize its dead weight this moment, make preceding fixed axle and the back fixed axle of seat body bottom exert decurrent pressure to first latch hook 1 and second latch hook 2 respectively, thereby drive first latch hook 1 and second latch hook 2 and rotate in order to lock preceding fixed axle and back fixed axle respectively towards the direction that is close to support frame 5's recess 50 automatically. After the first locking hook 1 and the second locking hook 2 automatically rotate towards the direction close to the groove 50 of the support framework 5, the first locking hook 1 applies a pulling force to the first elastic element 10, so that the first elastic element 10 is stretched, and the first elastic element 10 is in an energy storage state to be unlocked next time; correspondingly, the second locking hook 2 applies a pulling force to the second elastic member 20, thereby stretching the second elastic member 20, so that the second elastic member 20 is in a stored energy state for next unlocking. Then, the user can release the release element 4, so that the reset element 6 releases energy and pulls the pull rod 80 to move leftward, thereby driving the transmission arm 81 and the second push rod 31 to rotate clockwise to return to the original position, and then driving the first push rod 30 to rotate counterclockwise to return to the original position through the transmission arm 81, so that one end of the first push rod 30 is abutted to the first locking groove 11 again, and the second push rod 31 is abutted to the second locking groove 21 again, thereby locking the first locking hook 1 and the second locking hook 2.

Further, as shown in fig. 4 and 5, a first locking groove 12 is further formed on the back side of the first locking hook 1, and a second locking groove 22 is further formed on the back side of the second locking hook 2; the first engaging groove 12 is used to abut against the end of the first push rod 30 after the end of the first push rod 30 far from the unlocking piece 4 is withdrawn from the first locking groove 11, and the second engaging groove 22 is used to abut against the end of the second push rod 31 after the end of the second push rod 31 far from the unlocking piece 4 is withdrawn from the second locking groove 21.

The first engaging groove 12 is disposed on a side of the first locking groove 11 away from the first push rod 30, and the second engaging groove 22 is disposed on a side of the second locking groove 21 away from the second push rod 31.

After the end of the first push rod 30 far from the releasing element 4 exits from the first locking groove 11, because the first push rod 30 rotates clockwise and the first locking hook 1 rotates clockwise under the driving of the first elastic element 10, the end of the first push rod 30 far from the releasing element 4 enters the first locking groove 12 on one side of the first locking groove 11, and then the end of the first push rod 30 abuts against the first locking groove 12. After the end of the second rod 31 far from the unlocking element 4 is withdrawn from the second locking groove 21, since the second rod 31 rotates counterclockwise and the second locking hook 2 rotates counterclockwise under the driving of the second elastic element 20, the end of the second rod 31 far from the unlocking element 4 enters the second locking groove 22 on one side of the second locking groove 21, and then the end of the second rod 31 abuts against the second locking groove 22.

At this time, the mutual abutting action between the first ejector rod 30 and the first clamping groove 12 can limit the first lock hook 1 and the second ejector rod 31 to continue to rotate clockwise, even if the user loosens the release piece 4, the first ejector rod 30 abutted by the first clamping groove 12 can limit the pull rod 80 to move, so that the release of the reset piece 6 is limited, and the stability of the unlocking state can be ensured. Similarly, at this time, the second latch hook 2 and the second latch hook 31 can be restricted from continuing to rotate counterclockwise by the mutual abutting action between the second push rod 31 and the second latch slot 22, and even if the user releases the release member 4, the second push rod 31 abutted by the second latch slot 22 can restrict the movement of the pull rod 80, so that the release of the reset member 6 is restricted, and the stability of the unlocking state can be ensured.

And after the first locking hook 1 and the second locking hook 2 are pressed by the pressure of the seat body to return to the locking state, the first locking hook 1 can drive the first clamping groove 12 to rotate anticlockwise, so that the first clamping groove 12 and the first ejector rod 30 are separated from each other, the first ejector rod 30 does not limit the movement of the pull rod 80 any more at the moment, the release of the reset piece 6 is not limited, and the pull rod 80 can be reset under the drive of the reset piece 6. Meanwhile, the second locking hook 2 can drive the second locking groove 22 to rotate clockwise, so that the second locking groove 22 and the second ejector rod 31 are separated from each other, the second ejector rod 31 does not limit the movement of the pull rod 80 any more at the moment, the release of the reset piece 6 is not limited, and the pull rod 80 can be reset under the driving of the reset piece 6.

It can be seen that first draw-in groove 12 and second draw-in groove 22 not only can be used for first latch hook 1 and second latch hook 2 under the restriction unblock state to continue to rotate, and can make the user can loosen release 4 after first latch hook 1 and second latch hook 2 unblock, then be convenient for the user to ann tear open the seat body, can further promote the convenience of use. In addition, the first engaging groove 12 and the second engaging groove 22 can also improve the linkage between the structures of the base structure of the child safety seat in the unlocking state, and can also further improve the convenience in use.

As shown in fig. 2 and 3, the base structure of the child safety seat provided in this embodiment may further include a locking indicator 9 and a housing, where the locking indicator 9 is provided with a locking mark and an unlocking mark, and the housing is provided with an indicating hole capable of exposing the locking mark and the unlocking mark alternatively; the locking indicator 9 is connected with the unlocking piece 4 and the locking indicator 9 is installed in the shell, the locking indicator 9 is used for moving under the driving of the unlocking piece 4 to switch the locking mark and the unlocking mark at the indicating hole.

Specifically, when the unlocking piece 4 moves rightwards, so that the locking mechanism 3 is driven to move to unlock the first locking hook 1 and the second locking hook 2, the unlocking piece 4 can drive the locking indicator 9 to move, so that the unlocking mark of the locking indicator 9 is driven to move to the indicating hole, and the unlocking mark is exposed to indicate that the unlocking state is achieved at the moment. When the first locking hook 1 and the second locking hook 2 enter the locking state again and the unlocking element 4 is driven by the reset element 6 and the pull rod 80 to move leftwards, the unlocking element 4 can drive the locking mark of the locking indicator 9 to move to the indicator hole, so that the locking mark is exposed to indicate that the locking state is at the moment.

In practical application, the locking mark may be a green mark, and the unlocking mark may be a red mark.

Further, as shown in fig. 2 and 3, the locking indicator 9 may be rotatably mounted on the bottom bracket 7 through a rotating shaft, and the locking indicator 9 may be disposed on a side of the unlocking member 4 opposite to the pull rod 80, and the unlocking member 4 and the locking indicator 9 are connected through a torsion spring 90.

When the release 4 moves rightward, that is, the release 4 moves closer to the locking indicator 9, the release 4 presses the torsion spring 90, thereby rotating the locking indicator 9 by the torsion spring 90. During the rotation of the locking indicator 9, it can bring the unlocking indication to the indicating hole. Similarly, when the unlocking member 4 moves leftward, that is, the unlocking member 4 moves away from the locking indicator 9, the unlocking member 4 releases the torsion spring 90, and the torsion spring 90 drives the locking indicator 9 to rotate reversely under the elastic restoring action. During the reverse rotation of the locking indicator 9, it can bring the locking flag to the indicating hole.

As shown in fig. 2, the base structure of the child safety seat provided in this embodiment further includes a first latch sleeve 13 and a second latch sleeve 23, and both the material of the first latch sleeve 13 and the material of the second latch sleeve 23 are flexible materials; the first latch hook sleeve 13 is installed at one side of the first latch hook 1 capable of being hooked with the front fixing shaft, and the second latch hook sleeve 23 is installed at one side of the second latch hook 2 capable of being hooked with the rear fixing shaft.

First lock hook cover 13 and second lock hook cover 23 that adopt flexible material to make not only can increase the frictional force between latch hook and the fixed axle to promote the installation stability between latch hook and the fixed axle, and can play the cushioning effect, reduce the noise that the collision produced between latch hook and the fixed axle, thereby can promote the use travelling comfort of this children's safety seat base structure.

In this embodiment, the material of the first latch sleeve 13 and the material of the second latch sleeve 23 are preferably both rubber or silicone.

The embodiment also provides a child safety seat, which comprises the child safety seat base structure.

Further, this children's safety seat can also include the seat body, and the bottom of seat body is equipped with preceding fixed axle and the back fixed axle that is parallel to each other, and the seat body can be dismantled with above-mentioned children's safety seat base structure through first latch hook 1 and second latch hook 2 and be connected. Specifically, the first locking hook 1 is used for being hooked with the front fixed shaft, and the second locking hook 2 is used for being hooked with the rear fixed shaft.

Because this children's safety seat includes above-mentioned children's safety seat base structure, therefore this children's safety seat can realize the key unblock to first latch hook 1 and second latch hook 2 through release 4 and locking mechanical system 3 mutually supporting equally to the simplified operation promotes the convenience of use.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A child safety seat base structure is characterized by comprising a first lock hook (1), a second lock hook (2), a locking mechanism (3) and a release piece (4);

the first locking hook (1) and the second locking hook (2) are respectively used for hooking a front fixing shaft and a rear fixing shaft at the bottom of a seat body of the child safety seat, the first locking hook (1) and the second locking hook (2) are abutted to the locking mechanism (3), and the locking mechanism (3) is used for limiting the first locking hook (1) and the second locking hook (2) to rotate;

the unlocking piece (4) is connected with the locking mechanism (3), and the unlocking piece (4) is used for driving the locking mechanism (3) to move so as to separate the first locking hook (1) and the second locking hook (2) from the locking mechanism (3).

2. The child safety seat base structure according to claim 1, further comprising a reset element (6), wherein the reset element (6) is connected to the locking mechanism (3), and wherein the reset element (6) is configured to store energy when the locking mechanism (3) is moved by the release member (4).

3. The child safety seat base structure according to claim 1, further comprising a first elastic member (10) and a second elastic member (20);

one end of the first elastic piece (10) is connected with the first locking hook (1), the other end of the first elastic piece is fixed, and the first elastic piece (10) is used for storing energy when the first locking hook (1) is abutted to the locking mechanism (3);

one end of the second elastic piece (20) is connected with the second locking hook (2), the other end of the second elastic piece is fixed in position, and the second elastic piece (20) is used for storing energy when the second locking hook (2) is abutted to the locking mechanism (3).

4. The child safety seat base structure according to any one of claims 1-3, further comprising a support frame (5), wherein the first latch hook (1) and the second latch hook (2) are both hinged to the support frame (5);

the first lock hook (1) and the second lock hook (2) respectively comprise a hooking side and a back side which are back to back, a first lock groove (11) is formed in the back side of the first lock hook (1), and a second lock groove (21) is formed in the back side of the second lock hook (2);

the locking mechanism (3) comprises a first ejector rod (30) and a second ejector rod (31), the rod body of the first ejector rod (30) and the rod body of the second ejector rod (31) are hinged to the support framework (5), one end of the first ejector rod (30) abuts against the first locking groove (11), and the other end of the first ejector rod is connected with the unlocking piece (4); one end of the second ejector rod (31) is abutted to the second locking groove (21), and the other end of the second ejector rod is connected with the unlocking piece (4).

5. The child safety seat base structure according to claim 4, wherein the first push rod (30) and the second push rod (31) are connected with the release member (4) through a transmission mechanism (8), the transmission mechanism (8) is used for driving the first push rod (30) and the second push rod (31) to rotate on the support frame (5) under the driving of the release member (4) so as to enable the end of the first push rod (30) to withdraw from the first locking groove (11) and enable the end of the second push rod (31) to withdraw from the second locking groove (21).

6. The child safety seat base structure according to claim 5, wherein the transmission mechanism (8) comprises a pull rod (80), an end of the first push rod (30) away from the first locking groove (11) is connected with the pull rod (80), and an end of the second push rod (31) away from the second locking groove (21) is connected with the pull rod (80);

the pull rod (80) is connected with the release piece (4).

7. The child safety seat base structure according to claim 4, wherein the back side of the first latch hook (1) is further provided with a first latch slot (12), and the back side of the second latch hook (2) is further provided with a second latch slot (22);

the first clamping groove (12) is used for being abutted with the end of the first ejector rod (30) after the end part, far away from the unlocking piece (4), of the first ejector rod (30) is withdrawn from the first locking groove (11), and the second clamping groove (22) is used for being abutted with the end of the second ejector rod (31) after the end part, far away from the unlocking piece (4), of the second ejector rod (31) is withdrawn from the second locking groove (21).

8. The child safety seat base structure according to any one of claims 1 to 3, further comprising a locking indicator (9) and a housing, wherein the locking indicator (9) is provided with a locking mark and an unlocking mark, and the housing is provided with an indicating hole through which the locking mark and the unlocking mark can be alternatively exposed;

the locking indicator (9) is connected with the unlocking piece (4) and the locking indicator (9) is installed in the shell, and the locking indicator (9) is used for moving under the driving of the unlocking piece (4) so as to switch the locking mark and the unlocking mark at the indicating hole.

9. The child safety seat base structure according to any one of claims 1 to 3, further comprising a first latch sleeve (13) and a second latch sleeve (23), wherein the first latch sleeve (13) and the second latch sleeve (23) are both made of flexible materials;

the first lock hook sleeve (13) is arranged on one side, capable of being hooked with the front fixed shaft, of the first lock hook (1), and the second lock hook sleeve (23) is arranged on one side, capable of being hooked with the rear fixed shaft, of the second lock hook (2).

10. A child safety seat comprising a child safety seat base structure according to any one of claims 1 to 9.