CN103568893B - Seat clamping mechanism and baby car seat with same - Google Patents

Abstract

The present invention discloses a seat locking mechanism in the technical field of infant equipment, comprising a seat body and a base, wherein the seat body is detachably mounted on the base, a locking portion and a positioning portion are provided on the base, the locking portion comprises at least one locking member and a first operating member connected to the locking member, the locking member is pivotally connected to the base, the first operating member is arranged on the base, a first locking rod and a second locking rod are arranged at intervals at the bottom of the seat body, the second locking rod is used to be correspondingly arranged in the positioning portion, the first locking rod is used to be correspondingly arranged in the locking portion and to complete locking with the locking member, and the first operating member is used to drive the locking member to unlock the first locking rod; in this way, the separation of the seat body and the base is achieved, the operation is simple and convenient, and the structure is compact; the present invention also discloses a baby car seat with a seat locking mechanism.

Description

Seat engaging mechanism and infant car chair having same

technical field

The invention relates to the technical field of baby appliances, in particular to a seat engaging mechanism and a baby car chair with the mechanism.

Background technique

A baby car seat is a riding device specially designed for children to safely ride in a car. It adjusts the seat to cooperate with the car seat belt to provide a safe and comfortable riding environment for children. A child safety seat generally includes a seat body and a base, the base is fixed on the car seat, and the seat body is connected and fixed to the base through a sliding seat. However, most of the existing connection devices between the baby seat and the base have defects such as complex structure, inconvenient detachment and placement, and low firmness of placement.

Contents of the invention

The purpose of the present invention is to provide a seat engaging mechanism with simple structure, convenient operation and firm cooperation.

Another object of the present invention is to provide a baby car seat with the seat engaging mechanism, which has simple structure, convenient operation and firm fit.

In order to achieve the above object, the technical solution of the present invention is to provide a seat engaging mechanism, which is installed on a baby car seat and includes a seat body and a base, the base includes a sliding seat, and the sliding seat Slidingly connected to the base, the seat body is detachably mounted on the sliding seat, and the sliding seat is provided with an engaging part and a positioning part, and the engaging part includes at least one engaging part, A first operating member connected to the engaging member, the engaging member is pivotally connected to the sliding seat, the first operating member is slidably arranged on the sliding seat, and the bottom of the seat body is arranged at intervals There is a first clamping rod and a second clamping rod, the second clamping rod is used to be correspondingly arranged in the positioning part, and the first clamping rod is used to be correspondingly arranged in the said engaging part and is connected with the said positioning part. After the engaging part is engaged, the first operating part is used to drive the engaging part to unlock the first locking lever; wherein, the sliding seat is also provided with a function for indicating that the seat body and the The first indicator of the connection status of the carriage. When the seat body is fastened to the sliding seat, the second clamping rod is placed in the positioning part, and at this time, the first clamping rod is placed in the engaging part, so The engaging member pivots to engage and lock the first locking lever. To remove the seat body, you only need to operate the first operating member, and the first operating member drives the engaging The member is reversely pivoted to disengage from the engagement with the first locking lever, so as to realize unlocking, and at this time, the seat body can be disassembled. The first indicating device includes a first control part and a first indicating part connected with the first control part, the first control part is pivotally connected to the slide seat and adjacent to the engaging part, the A first indicator window is provided on the sliding seat, the lower end of the first indicating member is pivotally connected to the sliding seat, and the first indicating member is driven to pivot by the first control member, and the first indicating member The first engagement indication area of the component is exposed at the first indication window. The upper end of the first indicating member extends to the first indicating window, and is provided with the first indicating window which can be exposed at the first indicating window for indicating the connection state of the seat body and the sliding seat. An engagement indication area and a first warning indication area; when the first locking lever is engaged with the engaging part, the first locking lever interferes with the pivoting of the first control part to drive the The first indicating member pivots, and the first engagement indicating area is exposed at the first indicating window.

Preferably, the sliding seat includes an upper cover and a lower cover that are fastened and fixed to each other.

Preferably, the engaging member is a swing arm structure with a front engaging hook, the middle part of the engaging member is pivotally connected to the slide seat, and the upper end of the engaging member is connected to the first operating file connection.

Preferably, the engaging portion further includes a first limiting groove for seating the front engaging hook, and the first clamping rod extends into the limiting groove.

Preferably, a first elastic member is provided between the engaging member and the sliding seat, one end of the first elastic member is connected to the sliding seat, and the other end of the first elastic member is connected to the card The lower end of the engaging part; this design makes the engaging part automatically return to the engaged state under the elastic action of the first elastic part, so that the front engaging hook of the engaging part can more firmly hold the first engaging part. A clamping rod is used for locking and limiting to ensure that the connection between the seat body and the sliding seat is fixed.

Preferably, the first elastic member is one of a tension spring and a torsion spring.

Preferably, there are two engaging members, and the two engaging members are connected by a first cross bar, one end of the first elastic member is connected with the sliding seat, and the other end of the first elastic member is connected on the first crossbar.

Preferably, the positioning part includes a second limiting groove for the second clamping rod to enter and a barb for preventing the second clamping rod from coming out, and the barb is located at the second limiting groove. above the position groove; when engaging the seat body on the sliding seat, place the second lever in the second limit groove, and push the seat forward slightly The chair body pushes the second clamping rod under the barb, so that the second clamping rod is stably arranged in the positioning portion, and the structure is stable.

Preferably, a reinforcing member is provided inside the barb to further strengthen the strength of the barb, and the reinforcing member is fixedly arranged on the lower cover to prevent the second clamping rod from falling out of the positioning portion.

Preferably, it also includes a first traction member, the two ends of the first traction member are respectively connected with the first operating member and the engaging member, and the structure is compact.

Preferably, the first pulling member is a steel wire.

Preferably, the first indicating device further includes a first torsion spring, the first torsion spring connects the sliding seat and the first indicating member, and when the first clamping lever disengages from the engaging When the parts are engaged, the first torsion spring drives the first indicating part to pivot, and the first warning indicating area is exposed at the first indicating window.

Preferably, it also includes a pulling steel wire, and the two ends of the pulling steel wire are respectively connected with the first control part and the first indicator part.

Preferably, the positioning part includes at least one positioning piece, a second operating piece connected to the positioning piece, the positioning piece is pivotally connected to the sliding seat, and the second operating piece is arranged on the sliding seat. On the seat, the second clamping lever is used to be correspondingly arranged in the positioning part and complete the engagement with the positioning piece, and the second operating part is used to drive the positioning piece to perform the operation on the second clamping lever. unlock.

Preferably, a pressing portion is provided on the sliding seat, a first chute and a second chute are provided in the pressing portion, and the first operating member and the second operating member are respectively slidably arranged on In the first chute and the second chute.

Preferably, the positioning member and the engaging member are respectively connected to the second operating member and the first operating member through a second drawing member and a first drawing member.

Preferably, the positioning member is a swing arm structure with a rear engaging hook, the middle part of the positioning member is pivotally connected to the sliding seat, and the upper end of the positioning member is connected to the second operating member.

Preferably, the positioning portion further includes a second limiting groove for seating the rear engaging hook, so that the second clamping rod can extend into the second limiting groove.

Preferably, a second elastic member is provided between the positioning member and the sliding seat, one end of the second elastic member is connected to the sliding seat, and the other end of the second elastic member is connected to the positioning member .

Preferably, the second elastic member is one of a tension spring and a torsion spring.

Preferably, there are two positioning members, the two positioning members are connected by a second cross bar, one end of the second elastic member is connected to the sliding seat, and the other end of the second elastic member is connected to the Second crossbar.

Preferably, the sliding seat is provided with a second indicating device, and the second indicating device includes a second control member and a second indicating member connected with the second control member, and the second control member is pivotally connected to the On the sliding seat and adjacent to the positioning part, there is a second indicator window on the sliding seat, the lower end of the second indicating part is pivotally connected to the sliding seat, and the second control part drives the The second indicating member pivots, and the second engagement indicating area of the second indicating member is exposed at the second indicating window.

Preferably, the upper end of the second indicating member extends to the second indicating window, and there is a device that can be exposed at the second indicating window to indicate the connection status of the seat body and the sliding seat. The second engagement indication area and the second warning indication area; wherein, when the second locking lever and the positioning member are engaged and positioned, the second locking lever interferes with the pivot of the second control member Rotate to drive the second indicating member to pivot, and the second engagement indicating area is revealed at the second indicating window.

Preferably, the second indicating device further includes a second torsion spring, the second torsion spring is connected to the sliding seat and the second indicating member, when the second clamping lever is disengaged from the positioning member When engaged, the second torsion spring drives the second indicating member to pivot, and the second warning indicating area is exposed at the second indicating window.

Preferably, it also includes a pulling steel wire, and the two ends of the pulling steel wire are respectively connected with the second control part and the second indicating part.

A baby car chair, comprising a base, the base is provided with the above-mentioned seat engaging mechanism, which has a simple structure, convenient operation, and firm fit.

Compared with the prior art, the present invention includes a seat body and a base connected to a baby car seat, the seat body is detachably mounted on the sliding seat, and the sliding seat is provided with an engaging portion and a positioning part, the engaging part includes at least one engaging part, a first operating part connected with the engaging part, the engaging part is pivotally connected to the sliding seat, and the first operating part is arranged on the sliding seat On the seat, the bottom of the seat body is provided with a first clamping rod and a second clamping rod at intervals, the second clamping rod is correspondingly disposed in the positioning part, and the first clamping rod is correspondingly disposed in the clamping portion. and complete the engagement with the engaging part, and drive the first operating part so that the engaging part unlocks the first lever, so that the seat body is separated from the sliding seat, and the operation is simple and convenient , and compact structure.

Description of drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a structural schematic diagram of the seat body of the present invention.

Fig. 3 is a schematic structural view of the sliding seat arranged on the base according to the first embodiment of the present invention.

Fig. 4 is an exploded view of the structure of the sliding seat of the first embodiment of the present invention.

Fig. 5 is a schematic diagram of the structure of the sliding seat arranged on the base according to the second embodiment of the present invention.

Fig. 6 is an exploded view of the structure of the sliding seat according to the second embodiment of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

Please refer to FIGS. 1-4 . FIG. 1 is a three-dimensional schematic view of a first embodiment of the present invention, a baby car seat, including a seat body 1 and a base 3 . The base 3 includes a sliding seat 2, the sliding seat 2 is slidably connected to the base 3 to adjust the inclination angle, the seat body 1 is detachably installed on the sliding seat 2, so that the child safety seat can be fixed in the car more stable.

Wherein, as shown in FIG. 3 , the sliding seat 2 is provided with an engaging portion 21 and a positioning portion 22 , and the engaging portion 21 includes at least one engaging member 211 and a first operating member 212 connected to the engaging member 211 . In this embodiment, the engaging part 21 includes two engaging parts 211 and a first operating part 212 respectively connected to the two engaging parts 211 . The engaging member 211 is pivotally connected to the sliding seat 2 , and the first operating member 212 is slidably disposed on the sliding seat 2 . The bottom of the seat body 1 is provided with a first clamping rod 11 and a second clamping rod 12 , the second clamping rod 12 is used to be correspondingly arranged in the positioning part 22 , and the first clamping rod 11 is used to be correspondingly arranged in the engaging part 21 , to drive the first operating member 212 so that the engaging member 211 unlocks the first locking lever 11 .

As shown in Figures 3 and 4, preferably, the engaging member 211 is a swing arm structure with a front engaging hook 211a, the middle part of the engaging member 211 is pivotally connected to the sliding seat 2, and the upper end of the engaging member 211 is connected to the sliding seat 2. The first operating member 212 is connected. Preferably, a first elastic member 4 is provided between the engaging member 211 and the sliding seat 2, one end of the first elastic member 4 is connected to the sliding seat 2, and the other end of the first elastic member 4 is connected to the lower end of the engaging member 211; In this embodiment, the first elastic member 4 is a tension spring; of course, the first elastic member 4 can also be a torsion spring, but it is not limited thereto; this design enables the engaging member 211 to automatically Reset to the engaged state, so that the front engaging hook 211a of the engaging member 211 can be more firmly engaged and limited by the first locking rod 11 , ensuring that the connection between the seat body 1 and the sliding seat 2 is fixed. Preferably, the first operating member 212 is connected to the engaging member 211 through the first traction member 5 , and the two ends of the first drawing member 5 are respectively connected to the first operating member 212 and the engaging member 211 , with a compact structure. In this embodiment, the first traction member 5 is a steel wire, and there are two engaging members 211, and the two engaging members 211 are arranged opposite to each other, so the structure is compact.

Preferably, the sliding seat 2 includes an actuator 26 for controlling the sliding of the sliding seat 2 relative to the base 3 .

Preferably, the engaging portion 21 further includes a first limiting groove 213 for seating the front engaging hook 211a, and the first locking rod 11 extends into the first limiting groove 213 .

Preferably, the positioning part 22 includes a second limiting groove 221 for the second clamping rod 12 to extend into, and a barb 222 for preventing the second clamping rod 12 from coming out, and the barb 222 is located above the second limiting groove 221 .

When engaging the seat body 1 on the sliding seat 2, place the second locking lever 12 in the second limiting groove 221, and push the seat body 1 slightly forward, and push the second locking lever 12 to the The lower part of the barb 222 makes the second clamping rod 12 firmly arranged in the positioning portion 22, and the structure is stable. Preferably, a reinforcing member 223 is provided inside the barb 222 , and the strength of the barb 222 is further strengthened by using the reinforcing member 223 to prevent the second clamping rod 12 from falling out of the positioning portion 22 . Next, place the first locking lever 11 in the engaging portion 21 . As shown in FIG. 4, since the top end of the front engaging hook 211a has a circular arc surface 211a1, the first locking rod 11 pushes the arc surface 211a1, and the interference engaging part 211 pivots and retracts into the sliding seat 2, so that The first clamping rod 11 is accommodated, and the engaging member 211 is reset by the first elastic member 4 to complete the engagement of the first clamping rod 11 , and the combination and fixation of the seat body 1 and the sliding seat 2 are completed so far.

When detaching the seat body 1, you only need to press the first operating member 212 relatively inwardly, and the first operating member 212 drives the engaging member 211 to pivot by the first traction member 5 to retract the front engaging hook 211a to slide seat 2 to unlock the engagement of the first locking rod 11 . To achieve unlocking in this way, first move out the first clamping rod 11 , and then withdraw the second clamping rod 12 from the barb 222 of the positioning portion 22 , and then the seat body 1 can be detached.

Preferably, the sliding seat 2 includes an upper cover 2a and a lower cover 2b that are fastened and fixed to each other, wherein the engaging member 211, the traction member 5, the first operating member 212, the first elastic member 4 and the reinforcement member 223 are arranged on the lower Cover 2b. The first limiting groove 213, the second limiting groove 221 and the barb 222 are correspondingly arranged on the upper cover 2a, and the upper cover 2a is provided with an opening 2a1 for the first operating member 212 to pass through. When 2a is fastened with the lower cover 2b, the first operating member 212 is exposed from the opening 2a1 to the outside of the upper cover 2a.

As shown in Figures 5 to 6, it is the second embodiment of the present invention, and its difference from the first embodiment lies in the sliding seat 20, and the two engaging parts 211 on the sliding seat 20 are connected by a first cross bar 214 One end of the first elastic member 4 is connected to the sliding seat 20 , and the other end of the first elastic member 4 is connected to the first cross bar 214 . The first crossbar 214 moves under the elastic action of the first elastic member 4, and the two engaging members 211 can automatically return to the engaged state under the movement of the first crossbar 214, so that the front engaging hooks of the two engaging members 211 211a can engage with the first clamping rod 11 to limit the position at the same time, and has a compact structure.

Different from the first embodiment, the positioning part 22 of this embodiment includes at least one positioning piece 224 and a second operating piece 225 connected to the positioning piece 224 . The positioning part 224 is pivotally connected to the sliding seat 20, the second operating part 225 is arranged on the sliding seat 20, the second locking lever 12 is used to be correspondingly arranged in the positioning part 22 and complete engagement with the positioning part 224, the second operating part 225 is used to drive the positioning member 224 to unlock the second locking lever 12 . Preferably, the positioning member 224 is a swing arm structure with a rear engaging hook 224a, the middle part of the positioning member 224 is pivotally connected to the slide seat 20 , and the upper end of one positioning member 224 is connected to the second operating member 225 . The rear engaging hook 224a is seated in the second limiting groove 221. A second elastic member 6 is arranged between the positioning member 224 and the sliding seat 20. One end of the second elastic member 6 is connected with the sliding seat 20. The second elastic member 6 and the other end is connected to the positioning member 224. Specifically, the second elastic member 6 is also one of a tension spring and a torsion spring. Preferably, in this embodiment, there are two positioning members 224 , and the two positioning members 224 are connected by a second cross bar 226 , and the other end of the second elastic member 6 is connected to the positioning member 224 by being connected to the second cross bar 226 .

During operation, since the top of the rear engaging hook 224a also has a circular arc surface 224a1, by engaging the seat body 1 with the slide seat 20, the second locking rod 12 pushes the circular arc surface 224a1 to interfere with the positioning member 224 The pivot retracts into the sliding seat 2 to accommodate the second clamping rod 12 . The positioning member 224 is reset by the second elastic member 6 , thus completing the engagement of the second locking rod 12 . The slide seat 20 includes an upper cover 20a and a lower cover 20b that are fastened and fixed to each other. Wherein, the engaging member 211, the first operating member 212, the first elastic member 4 and the reinforcing member 223 are arranged on the lower cover 20b, and the first limiting groove 213 and the second limiting groove 221 are correspondingly arranged on the upper cover 20a and an opening 20a1 is opened on the upper cover 20a.

In addition, in this embodiment, the positioning member 224 is connected to the second operating member 225 through the second drawing member 5b, and the engaging member 211 is also connected to the first operating member 212 through the first drawing member 5a. The sliding seat 20 is provided with a pressing portion 23 protruding from the lower cover 20b of the sliding seat 20 and exposed to the opening 20a1 of the upper cover 20a. The pressing portion 23 defines a first sliding slot 231 and a second sliding slot 232 , and the first operating member 212 and the second operating member 225 are slidably disposed in the first sliding slot 231 and the second sliding slot 232 respectively. When unlocking, the user presses the pressing portion 23 on the slide seat 20, at this time, the first operating member 212 and the second operating member 225 slide in the first sliding groove 231 and the second sliding groove 232 respectively, thus realizing the operation of the second sliding groove. Simultaneous driving of the first operating member 212 and the second operating member 225 enables the engaging member 211 and the positioning member 224 to simultaneously unlock the first locking lever 11 and the second locking lever 12 respectively, and the operation is simple.

In the second embodiment, the sliding seat 20 is further provided with a first indicating device 24 for indicating the connection state of the seat body 1 and the sliding seat 20 . Specifically, the first indicating device 24 includes a first control member 241 and a first indicating member 242 connected to the first control member 241 , and the first control member 241 is pivotally connected to the slide seat 2 and disposed adjacent to the engaging member 211 . The sliding seat 20 is provided with a first indicating window 243 , the lower end of the first indicating member 242 is pivotally connected to the sliding seat 20 , and the upper end of the first indicating member 242 extends to the first indicating window 243 .

The first indicating member 242 is provided with a first engagement indicating area 242 a and a first warning indicating area 242 b which can be displayed at the first indicating window 243 for indicating the connection state of the seat body 1 and the sliding seat 20 . When the first locking lever 11 is engaged with the engaging member 211, the first locking lever 11 pushes the first control member 241, and the first control member 241 drives the first indicating member 242 to pivot, and the first engaging indicating area 242a displayed at the first indicator window 243 . The first indicating device 24 further includes a first torsion spring 244 , and the first torsion spring 244 is connected to the sliding seat 20 on the base 3 and the first indicating member 242 . When the first lever 11 is disengaged from the engaging member 211 , the first torsion spring 244 drives the first indicating member 242 to pivot, so that the first warning indicating area 242b is exposed at the first indicating window 243 . Preferably, the first control member 241 is connected to the first indicating member 242 through a pulling steel wire 7a, and both ends of the pulling steel wire 7a are connected to the first control member 241 and the first indicating member 242 respectively. At the same time, the first engagement indication area 242a and the first warning indication area 242b are color indication areas of different colors, and the user can distinguish them with naked eyes according to different colors, and the identification is simple and convenient.

Preferably, in this embodiment, the first engagement indication area 242a is a green indication area, and the first warning indication area 242b is a red indication area, and users can quickly distinguish between these two common color warning signs. It should be noted that the first indicating device 24 in this embodiment can also be applied to the sliding seat 2 of the first embodiment. An indicating window is provided on the sliding seat 2 to reveal the indicating member, and the first control member 241 and the card The engaging part 211 of the joint part 21 is disposed adjacently and connected with the indicating part by a steel wire, so as to display the combined state of the first clamping rod 11 of the seat body 1 and the engaging part 211 . Alternatively, the indicating device of this embodiment is arranged in a structural product similar to the present invention, and the present invention is not limited thereto.

What's more, in the second embodiment, the sliding seat 20 is further provided with a second indicating device 25 , and the second indicating device 25 includes a second control part 251 and a second indicating part 252 connected with the second control part 251 . The second control member 251 is pivotally connected to the sliding seat 20 and disposed adjacent to the positioning member 224 . A second indicating window 253 is provided on the sliding seat 2, the lower end of the second indicating member 252 is pivotally connected to the sliding seat 2, and the upper end of the second indicating member 252 extends to the second indicating window 253, and there is a device which can be exposed on the second indicating window. The second indication window 253 is used to indicate the second engagement indication area 252 a and the second warning indication area 252 b of the connection status of the seat body 1 and the sliding seat 2 . When the second locking lever 12 and the positioning member 224 are engaged and positioned, the second locking lever 12 pushes the second control member 251, and the second control member 251 drives the second indicating member 252 to pivot, and the second engaging indicating area 252a It is exposed at the second indicating window 253 ; similarly, the second indicating device 25 further includes a second torsion spring 254 , and the second torsion spring 254 is connected to the sliding seat 20 on the base 3 and the second indicating member 252 . When the second locking lever 12 is out of engagement with the positioning member 224 , the second torsion spring 254 drives the second indicating member 252 to pivot, so that the second warning indicating area 252 b is exposed at the second indicating window 253 . The second control part 251 is connected to the second indicating part 252 through the pulling steel wire 7b, and the two ends of the pulling steel wire 7b are connected to the second control part 251 and the second indicating part 252 respectively.

At the same time, the second engagement indication area 252a and the second warning indication area 252b are the same as the first engagement indication area 242a and the second warning indication area 252b. They are color indication areas of different colors. It is simple and convenient to distinguish by naked eyes. In this embodiment, the second engagement indication area 252a is a green indication area, and the second warning indication area 252b is a red indication area. distinguish.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still fall within the scope of the present invention.

Claims (26)

1. A seat engaging mechanism installed on a baby car seat, comprising a seat body and a base, characterized in that: the base includes a sliding seat, and the sliding seat is slidably connected to the base On the above, the detachable device of the seat body is on the sliding seat, and the sliding seat is provided with an engaging part and a positioning part, and the engaging part includes at least one engaging part, and the engaging part connected to a first operating member, the engaging member is pivotally connected to the sliding seat, the first operating member is slidably arranged on the sliding seat, and a first card is arranged at intervals on the bottom of the seat body. rod and a second clamping rod, the second clamping rod is used to be correspondingly arranged in the positioning part, and the first clamping rod is used to be correspondingly arranged in the described clamping part and complete with the clamping part The first operating part is used to drive the engaging part to unlock the first locking lever; wherein, the sliding seat is also provided with an indicator for indicating the connection status of the seat body and the sliding seat the first indicating device; The first indicating device includes a first control part and a first indicating part connected with the first control part, the first control part is pivotally connected to the slide seat and adjacent to the engaging part, the A first indicating window is provided on the sliding seat, and the lower end of the first indicating member is pivotally connected to the sliding seat; the upper end of the first indicating member extends to the first indicating window, and a A first engagement indication area and a first warning indication area at the first indication window for indicating the connection state of the seat body and the sliding seat; When the first locking lever is engaged with the engaging member, the first locking lever interferes with the pivoting of the first control member to drive the first indicating member to pivot, and the first indicating member The first engagement indication area of is displayed at the first indication window. 2 . The seat engaging mechanism according to claim 1 , wherein the sliding seat comprises an upper cover and a lower cover which are fastened and fixed to each other. 3 . 3. The seat engaging mechanism according to claim 1, wherein the engaging member is a swing arm structure with a front engaging hook, and the middle part of the engaging member is pivotally connected to the sliding seat On, the upper end of the engaging member is connected with the first operating member. 4. The seat engaging mechanism according to claim 3, wherein the engaging portion further includes a first limiting groove for the front engaging hook to seat, and the first locking rod protrude into the limiting groove. 5. The seat engaging mechanism according to claim 3, wherein a first elastic member is provided between the engaging member and the sliding seat, and one end of the first elastic member is connected to the sliding seat connected, the other end of the first elastic member is connected to the lower end of the engaging member. 6. The seat engaging mechanism according to claim 5, wherein the first elastic member is one of a tension spring and a torsion spring. 7. The seat engaging mechanism according to claim 5, characterized in that: there are two engaging members, and the two engaging members are connected by a first cross bar, and one end of the first elastic member is connected to The sliding seat is connected, and the other end of the first elastic member is connected to the first cross bar. 8. The seat engaging mechanism according to claim 1, wherein the positioning portion includes a second limiting groove for the second locking rod to enter and prevent the second locking rod from coming out A barb, the barb is located above the second limiting groove. 9. The seat engaging mechanism according to claim 8, characterized in that: the sliding seat includes an upper cover and a lower cover that are fastened and fixed to each other, a reinforcing member is provided inside the barb, and the reinforcing member is fixed set on the lower cover. 10. The seat engaging mechanism according to claim 1, further comprising a first traction member, the two ends of the first traction member are connected to the first operating member and the engaging member respectively. connect. 11. The seat engaging mechanism according to claim 10, wherein the first pulling member is a steel wire. 12. The seat engaging mechanism according to claim 1, wherein the first indicating device further comprises a first torsion spring, and the first torsion spring connects the sliding seat and the first indicating device part, when the first locking lever disengages from engaging with the engaging part, the first torsion spring drives the first indicating part to pivot, and the first warning indicating area is exposed at the first indicating window . 13. The seat engaging mechanism according to claim 1, further comprising a pulling steel wire, the two ends of the pulling steel wire are respectively connected to the first control part and the first indicator . 14. The seat engaging mechanism according to claim 1, wherein the positioning part comprises at least one positioning part and a second operating part connected to the positioning part, and the positioning part is pivotally connected to the positioning part. On the sliding seat, the second operating member is arranged on the sliding seat, and the second clamping rod is used to be correspondingly arranged in the positioning part and complete engagement with the positioning member. The second operation The component is used to drive the positioning component to unlock the second locking lever. 15. The seat engaging mechanism according to claim 14, wherein a pressing portion is provided on the sliding seat, a first sliding groove and a second sliding groove are provided in the pressing portion, and the first sliding groove An operating member and the second operating member are respectively slidably disposed in the first sliding slot and the second sliding slot. 16. The seat engaging mechanism according to claim 14, characterized in that: the positioning member and the engaging member respectively pass through a second traction member and a first traction member and the second operating member, The first operating element is connected. 17. The seat engaging mechanism according to claim 14, characterized in that: the positioning member is a swing arm structure with a rear engaging hook, the positioning member is pivotally connected to the sliding seat, and the The upper end of the positioning part is connected with the second operating part. 18. The seat engaging mechanism according to claim 17, characterized in that: the positioning part further includes a second limit groove for the seat of the rear engaging hook, for the second engaging hook to be seated. The rod extends into the second limiting groove. 19. The seat engaging mechanism according to claim 18, wherein a second elastic member is provided between the positioning member and the sliding seat, and one end of the second elastic member is connected to the sliding seat , the other end of the second elastic member is connected to the positioning member. 20. The engaging mechanism of the seat according to claim 19, wherein the second elastic member is one of a tension spring and a torsion spring. 21. The seat engaging mechanism according to claim 19, characterized in that: there are two positioning members, the two positioning members are connected by a second cross bar, and one end of the second elastic member is connected to the slide The seat is connected, and the other end of the second elastic member is connected to the second cross bar. 22. The seat engaging mechanism according to claim 14, characterized in that: the sliding seat is provided with a second indicating device, and the second indicating device includes a second control part, a A second indicating part, the second control part is pivotally connected to the sliding seat and adjacent to the positioning part, a second indicating window is provided on the sliding seat, and the lower end of the second indicating part is pivotally connected to the On the sliding seat, the second indicating member is driven to pivot by the second control member, and the second engagement indicating area of the second indicating member is exposed at the second indicating window. 23. The seat engaging mechanism according to claim 22, characterized in that: the upper end of the second indicating member extends to the second indicating window, and has a The second engagement indication area and the second warning indication area for indicating the connection state of the seat body and the sliding seat; Wherein, when the second locking lever and the positioning member are engaged and positioned, the second locking lever interferes with the pivoting of the second control member to drive the pivoting of the second indicating member, and the second The engagement indication area is exposed at the second indication window. 24. The seat engaging mechanism according to claim 23, wherein the second indicating device further comprises a second torsion spring, and the second torsion spring connects the sliding seat and the second indicating device When the second clamping lever is out of engagement with the positioning member, the second torsion spring drives the second indicating member to pivot, and the second warning indicating area is revealed at the second indicating window. 25. The seat engaging mechanism according to claim 22, further comprising a pulling steel wire, the two ends of the pulling steel wire are respectively connected to the second control part and the second indicator . 26. A baby car seat, comprising a base, characterized in that the seat engaging mechanism according to any one of claims 1-25 is arranged on the base.