Child car seat

Abstract

The invention discloses a child car seat, comprising a seat body and an ISOFIX connection assembly, the ISOFIX connection assembly comprising an outer tube and an inner tube, the ISOFIX connection assembly having an initial state and a connection state, the ISOFIX connection assembly further comprising a first locking mechanism for locking the ISOFIX connection assembly in the initial state and the connection state, an unlocking mechanism for unlocking the first locking mechanism, the unlocking mechanism comprising a release button arranged slidably, a driving member arranged slidably in the inner tube, and flexible connecting members respectively connected to the release button and the driving member at both ends, the first locking mechanism comprising a first locking member rotatably arranged on the driving member, when the release button is pressed, the driving member is pulled to slide relative to the inner tube through the flexible connecting member, the first locking member is driven to rotate to unlock the first locking mechanism, and the ISOFIX connection assembly further comprising a first elastic member for making the inner tube extend to the outside of the outer tube at the maximum length after the first locking mechanism of the ISOFIX connection assembly is unlocked in the initial state. The child car seat is easy to install and easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of children's products, in particular to a child car seat. Background Art

[0002] Child car seats are mainly used when children are riding in a car to protect their personal safety. At present, child car seats have been increasingly used, and various types of child car seats are sold on the market. In order to make the connection between the child car seat and the car seat simpler and more reliable, more and more child car seats choose to use ISOFIX (International Organization for Standardization Fixings). When the child car seat is installed on the car seat, the inner tube of the ISOFIX connection assembly provided on the child car seat generally needs to extend out of the outer tube by a certain distance. In the prior art, manual operation is required when the inner tube of the ISOFIX connection assembly extends into the outer tube, which is inconvenient to use the ISOFIX connection assembly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved child car seat.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A child car seat, comprising a seat body and an ISOFIX connection assembly arranged on the seat body, the ISOFIX connection assembly comprising an outer tube and an inner tube slidably arranged in the outer tube along the length extension direction of the outer tube, the ISOFIX connection assembly having an initial state in which the inner tube is completely retracted into the outer tube and a connection state in which the inner tube is extended to the outside of the outer tube to the maximum length, the ISOFIX connection assembly further comprising a first locking mechanism for locking the ISOFIX connection assembly in the initial state and the connection state respectively, and an unlocking mechanism for driving the first locking mechanism to unlock, the unlocking mechanism comprising a release mechanism slidably arranged on the seat body The first locking mechanism comprises a first locking member rotatably arranged on the driving member, and when the release button is pressed to unlock the first locking mechanism, the driving member is pulled to slide relative to the inner tube through the flexible connecting member, and the first locking member is driven to rotate relative to the driving member to unlock the first locking mechanism. The ISOFIX connection assembly also includes a first elastic member for driving the inner tube to extend to the outside of the outer tube to a maximum length after the first locking mechanism of the ISOFIX connection assembly is unlocked in an initial state.

[0006] Preferably, the first locking member is provided with a first locking tongue and a second locking tongue, and the outer tube is respectively provided with a first locking groove and a second locking groove, when the ISOFIX connection assembly is locked in an initial state, the first locking tongue and the second locking tongue are both located in the first locking groove, and a first contact surface provided on the first locking tongue is against the first locking groove, when the ISOFIX connection assembly is locked in a connected state, the first locking tongue and the second locking tongue are both located in the second locking groove, and a second contact surface provided on the second locking tongue is against the second locking groove, and when the first locking mechanism is in an unlocked state, the first locking tongue and the second locking tongue are both out of the first locking groove and the second locking groove.

[0007] Preferably, a fixing column is fixedly provided on the inner tube, a first matching portion is provided on the first locking member, and an outer cylindrical surface of the fixing column abuts against the first matching portion.

[0008] Preferably, the ISOFIX connection assembly also includes a second locking mechanism for preventing the inner tube from sliding in a direction extending out of the outer tube, the second locking mechanism including a second locking piece rotatably arranged in the inner tube and a third locking groove arranged on the outer tube, the second locking piece having a third locking tongue, the third locking groove cooperating with the third locking tongue, when the second locking mechanism is in a locked state, the third locking tongue is inserted in the third locking groove, when the second locking mechanism is in an unlocked state, the third locking tongue is disengaged from the third locking groove, and when the second locking mechanism is in a locked state, the first locking mechanism is in an unlocked state.

[0009] Furthermore, when the ISOFIX connection assembly is locked in the initial state and the connection state, the second locking mechanism is in an unlocked state, the second locking member is located in the inner tube and the third locking tongue is against the inner wall of the outer tube.

[0010] Furthermore, a pressing portion is provided on the driving member, and a blocking portion is provided on the second locking member. When the release button is pressed in the initial state or the connected state of the ISOFIX connection assembly to drive the first lock mechanism to be unlocked, the driving member slides forward, and the pressing portion is pressed on the blocking portion, so that the second lock mechanism is in an unlocked state.

[0011] Furthermore, a slot is provided on the driving member, and a blocking portion is provided on the second locking member. When the second locking mechanism is in a locked state and the release button is pressed to slide the driving member forward, the blocking portion is located in the slot and can slide relative to the slot.

[0012] Preferably, the ISOFIX connection assembly also includes a third lock mechanism that can be connected to and locked with a car seat, the third lock mechanism includes a third locking piece rotatably arranged on the inner tube, the unlocking mechanism also includes a tension spring whose two ends are respectively connected to the driving member and the third locking piece, the third locking piece is provided with a second matching portion, and the driving member is provided with a third matching portion, when the third lock mechanism is in a locked state, the third matching portion is snapped into the second matching portion, when the third lock mechanism is in an unlocked state, the third matching portion is away from the second matching portion, when the ISOFIX connection assembly is in a connected state, the third locking piece can be connected to the car seat, when the third lock mechanism is in a locked state, the first lock mechanism is in an unlocked state, and when the third lock mechanism is in an unlocked state, the first lock mechanism is in a locked state.

[0013] Furthermore, a second locking tongue is provided on the first locking member, and a second locking groove is provided on the outer tube. When the ISOFIX connection assembly is locked in a connected state, the second locking tongue is located in the second locking groove, and the rear portion of the second locking tongue has a third contact surface. When the third locking member is connected to the car seat, the driving member and the first locking member are pulled to slide backward by the tension spring, and the third contact surface cooperates with the second locking groove to rotate the first locking member relative to the driving member, thereby unlocking the first locking mechanism.

[0014] Preferably, the outer tubes are fixedly arranged on the left and right sides of the seat body respectively, and the inner tubes are slidably arranged in the outer tubes on each side. The ISOFIX connection assembly also includes a synchronous connecting rod whose two ends are respectively fixedly connected to the inner tubes on both sides for driving the inner tubes on both sides to slide synchronously relative to the outer tubes.

[0015] Furthermore, a slide groove extending in the front-rear direction is arranged on the outer tube on each side, and the synchronous connecting rod passes through the slide groove and can be slidably arranged along the length extension direction of the slide groove.

[0016] Preferably, the outer tube is fixedly arranged on the left and right sides of the seat body respectively, the inner tube is slidably arranged in the outer tube on each side, the driving member and the first locking member are respectively arranged in the inner tube on each side, the release button can be slidably arranged at the front part of the seat body, and the driving members on both sides are connected to the release button through the flexible connecting member.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the child car seat of the present invention has a simple structure. When the child car seat is not in use, the inner tube of the ISOFIX assembly can be retracted into the outer tube, so as to facilitate storage. When the child car seat needs to be used, the first lock mechanism can be unlocked by the driving member by pressing the release button. After the first lock mechanism is unlocked, the inner tube can automatically pop out under the elastic force of the first elastic member to make the ISOFIX connection assembly in a connected state. In this state, the ISOFIX connection assembly can be connected to the car seat, so as to fix the child car seat on the car seat. The inner tube of the ISOFIX connection assembly does not require manual operation during the pop-up process, which is convenient for the use of the ISOFIX connection assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 An exploded view of the ISOFIX connection assembly of the present invention (single-side structure);

[0019] Attached Figure 2 For attachment Figure 1 A partial enlarged view of the middle part;

[0020] Attached Figure 3 Schematic diagram of the external structure of the ISOFIX connection assembly of the present invention when locked in the initial state (release button is released, the first locking mechanism is locked, and the second locking mechanism is unlocked);

[0021] Attached Figure 4 For attachment Figure 3 A partial enlarged view of the middle part;

[0022] Attached Figure 5 It is a schematic diagram of the structure of the inner tube of the ISOFIX connection assembly of the present invention locked in the initial state (the release button is released, the first locking mechanism is locked, and the second locking mechanism is unlocked);

[0023] Attached Figure 6 Schematic diagram of the external structure of the ISOFIX connection assembly of the present invention in the connected state (pressing the release button, the first locking mechanism is unlocked, and the second locking mechanism is unlocked);

[0024] Attached Figure 7 It is a schematic diagram of the structure inside the inner tube of the ISOFIX connection assembly of the present invention in the connected state (pressing the release button, the first locking mechanism is unlocked, and the second locking mechanism is unlocked);

[0025] Attached Figure 8 It is a schematic diagram of the external structure of the ISOFIX connection assembly of the present invention when it is locked in the connection state (the release button is released, the first locking mechanism is locked, and the second locking mechanism is unlocked);

[0026] Attached Fig. 9 For attachment Figure 8A partial enlarged view of the middle part;

[0027] Attached Fig.10 It is a structural schematic diagram of the ISOFIX connection assembly of the present invention locked inside the inner tube in the initial connection state (the release button is released, the first locking mechanism is locked, and the second locking mechanism is unlocked);

[0028] Attached Fig.11 It is a schematic diagram of the external structure after the ISOFIX connection assembly of the present invention is connected to the car seat (the car seat is not shown, the release button is released, the third locking mechanism is locked, and the first locking mechanism and the second locking mechanism are unlocked);

[0029] Attached Fig.12 It is a schematic diagram of the structure inside the inner tube after the ISOFIX connection assembly of the present invention is connected to the car seat (the car seat is not shown, the release button is released, the third lock mechanism is locked, and the first lock mechanism and the second lock mechanism are unlocked);

[0030] Attached Fig.13 Schematic diagram of the external structure of the ISOFIX connection assembly of the present invention after the connection between the assembly and the vehicle seat is disconnected in the use state of the maximum gear position (the vehicle seat is not shown, the release button is pressed, the third locking mechanism, the first locking mechanism and the second locking mechanism are all unlocked);

[0031] Attached Fig.14 It is a schematic diagram of the structure inside the inner tube after the ISOFIX connection assembly of the present invention is disconnected from the car seat in the use state of the maximum gear position (the car seat is not shown, the release button is pressed, the third locking mechanism, the first locking mechanism and the second locking mechanism are all unlocked);

[0032] Attached Fig.15 Schematic diagram of the external structure of the ISOFIX connection assembly of the present invention when in use at the intermediate gear position (the car seat is not shown, the release button is released, the third locking mechanism is locked, the first locking mechanism is unlocked, and the second locking mechanism is locked);

[0033] Attached Fig.16 It is a schematic diagram of the structure inside the inner tube of the ISOFIX connection assembly of the present invention when it is in use at the intermediate gear position (the car seat is not shown, the release button is released, the third locking mechanism is locked, the first locking mechanism is unlocked, and the second locking mechanism is locked);

[0034] Attached Fig.17 It is a schematic diagram of the external structure of the ISOFIX connection assembly of the present invention after the connection between the assembly and the car seat is disconnected in the middle gear position (the car seat is not shown, the release button is pressed, the third locking mechanism is unlocked, the first locking mechanism is unlocked, and the second locking mechanism is locked);

[0035] Attached Fig.18It is a schematic diagram of the structure inside the inner tube after the ISOFIX connection assembly of the present invention is disconnected from the car seat in the middle gear position (the car seat is not shown, the release button is pressed, the third lock mechanism is unlocked, the first lock mechanism is unlocked, and the second lock mechanism is locked);

[0036] Attached Fig.19 It is a schematic diagram of the external structure of the ISOFIX connection assembly of the present invention when it is in the middle gear position, after the connection with the car seat is disconnected, and after the inner tube slides in the direction of retracting the outer tube (the car seat is not shown, the release button is released, the third locking mechanism is unlocked, the first locking mechanism is unlocked, and the second locking mechanism is locked);

[0037] Attached Fig. 20 It is a schematic diagram of the structure of the interior of the inner tube of the ISOFIX connection assembly of the present invention when it is in use at the intermediate gear position, after the connection with the car seat is disconnected, and after the inner tube slides in the direction of retracting the outer tube (the car seat is not shown, the release button is released, the third locking mechanism is unlocked, the first locking mechanism is unlocked, and the second locking mechanism is locked). DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] The child car seat of the present invention comprises a seat body and an ISOFIX connection assembly arranged on the seat body, such as Figure 1 to Figure 20 As shown, the ISOFIX connection assembly comprises an outer tube 1 connected to the seat body and an inner tube 2 slidably arranged in the outer tube 1 along the length extension direction of the outer tube 1, and both the outer tube 1 and the inner tube 2 extend in the front-rear direction. The ISOFIX connection assembly has an initial state in which the inner tube 2 is completely retracted into the outer tube 1 and a connection state in which the inner tube 2 extends out of the outer tube 1 to the maximum length. The ISOFIX connection assembly also comprises a first locking mechanism for locking the ISOFIX connection assembly in the initial state and the connection state, respectively, a second locking mechanism for preventing the inner tube 2 from sliding in the direction of extending out of the outer tube 1, a third locking mechanism for connecting and locking with the car seat, and an unlocking mechanism.

[0040] The first locking mechanism includes a first locking member 31 which is rotatably and slidably arranged in the inner tube 2, and a first locking groove 11 and a second locking groove 12 which are respectively arranged on the outer tube 1. The first locking member 31 has a first locking tongue 311 and a second locking tongue 312. The first locking tongue 311 is provided with a first contact surface 311a, and the second locking tongue 312 is provided with a second contact surface 312a. When the ISOFIX connection assembly is in the initial state and the first locking mechanism is in the locked state, the first locking tongue 311 and the second locking tongue 312 are both located in the first locking groove 11, and the first contact surface 311a is arranged against the rear end of the first locking groove 11, so that the inner tube 2 can be prevented from sliding in the direction of extending out of the outer tube 1, as shown in FIG. Figure 3~Figure 5 When the ISOFIX connection assembly is in the connected state and the first lock mechanism is in the locked state, the first lock tongue 311 and the second lock tongue 312 are both located in the second lock groove 12, and the second contact surface 312a is set against the front end of the second lock groove 12, so that the inner tube 2 can be prevented from sliding in the direction of retracting the outer tube 1, as shown in FIG. Figure 8~Figure 10 When the first lock mechanism is in the unlocked state, the first lock tongue 311 and the second lock tongue 312 are both out of the first lock slot 11 and the second lock slot 12 .

[0041] In this embodiment, the first contact surface 311a is arranged at the rear of the first locking tongue 311, and the front of the first locking tongue 311 is an inclined surface arranged upwardly from front to rear. The second contact surface 312a is arranged at the front of the second locking tongue 312, and the rear of the second locking tongue 312 is an inclined surface arranged downwardly from front to rear.

[0042] The first locking mechanism further includes a second elastic member 32 for driving the first locking member 31 to return from the unlocked state to the locked state. In this embodiment, the second elastic member 32 is a compression spring.

[0043] The second locking mechanism includes a second locking member 41 rotatably arranged in the inner tube 2 and a third locking groove 13 arranged on the outer tube 1. The third locking groove 13 is arranged at intervals along the length extension direction of the outer tube 1. The second locking member 41 is provided with a third locking tongue 411, and the third locking groove 13 cooperates with the third locking tongue 411. When the second locking mechanism is in a locked state, the third locking tongue 411 is inserted into one of the third locking grooves 13. When the third locking tongue 411 is in different third locking grooves 13, the ISOFIX connection assembly is in different gear positions; when the second locking mechanism is in an unlocked state, the third locking tongue 411 is disengaged from the third locking groove 13. Specifically, the rear end face of the third locking tongue 411 is a straight face, and when the second locking mechanism is in a locked state, the straight face is perpendicular to the sliding direction of the inner tube 2, and the front end face of the third locking tongue 411 is an inclined face inclined upward from front to rear.

[0044] The second locking mechanism also includes a third elastic member 42 for driving the second locking member 41 to return from the unlocked state to the locked state. In this embodiment, the third elastic member 42 also adopts a compression spring, and the two ends of the compression spring are respectively disposed on the second locking member 41 and the inner tube 2.

[0045] The third locking mechanism comprises a third locking member 5 rotatably arranged in the inner tube 2, and the third locking member 5 has a locking hook 51. When the third locking mechanism is in a locked state, the locking hook 51 is connected to an anchoring mechanism on the car seat, and the child car seat is fixed to the car seat; when the third locking mechanism is in an unlocked state, the locking hook 51 is separated from the anchoring mechanism, and the child car seat can be removed from the car seat.

[0046] The unlocking mechanism includes a release button 61 slidably disposed on the seat body, a drive member 62 slidably disposed in the inner tube 2 in the front-rear direction, and a flexible connector 63 having two ends respectively connected to the drive member 62 and the release button 61. In this embodiment, the flexible connector 63 is a traction rope.

[0047] The first locking member 31 is rotatably arranged on the driving member 62, and a fixing column 21 is fixedly arranged on the inner tube 2, and the fixing column 21 cooperates with the first locking member 31. Specifically, a first matching portion 313 is arranged on the first locking member 31, and the outer cylindrical surface of the fixing column 21 is against the first matching portion 313. In this embodiment, the first matching portion 313 is an inclined surface extending upward from the front to the rear, and the outer cylindrical surface of the fixing column 21 is against the inclined surface. When the ISOFIX connection assembly is locked by the first locking mechanism, the first locking mechanism can be driven to unlock by operating the unlocking mechanism. The specific unlocking process is: press the release button 61, pull the driving member 62 forward by the traction rope, and drive the first locking member 31 to slide forward. In this process, the first locking member 31 is driven to rotate relative to the driving member 62 by the matching of the fixing column 21 and the first matching portion 313, so that the first locking tongue 311 and the second locking tongue 312 are disengaged from the first locking groove 11 or the second locking groove 12, and the first locking mechanism is unlocked.

[0048] The unlocking mechanism further includes a tension spring 64 , one end of which is arranged on the third locking member 5 , and the other end of which is arranged on the driving member 62 .

[0049] When the ISOFIX connection assembly is locked in the initial connection state by the first locking mechanism, the third locking member 5 can be connected to the anchor mechanism on the car seat, so that the inner tube 2 can be prevented from retracting into the outer tube 1 when the third locking member 5 is connected to the anchor mechanism. When the third locking member 5 is connected to the anchor mechanism, the third locking member 5 rotates relative to the inner tube 2, and the driving member 62 is pulled to slide backward by the tension spring 64, so that the first locking member 31 also slides backward synchronously. In this process, the first locking member 31 rotates relative to the driving member 62 through the cooperation of the third contact surface 312b set at the rear of the second locking tongue 312 and the second locking groove 12, so that the first locking tongue 31 and the second locking tongue 32 gradually come out of the second locking groove 12. When the third locking mechanism is locked, the first locking mechanism is unlocked. In this embodiment, the third contact surface 312b is an inclined surface located at the rear of the second locking tongue 312.

[0050] The third locking member 5 is provided with a second matching portion 52, and the driving member 62 is provided with a third matching portion 621. When the third locking mechanism is in a locked state, the third matching portion 621 is inserted into the second matching portion 52. When the third locking mechanism is unlocked, the third matching portion 621 is away from the second matching portion 52.

[0051] The third locking mechanism can be driven to unlock by operating the unlocking mechanism. The specific unlocking process is: press the release button 61, pull the driving member 62 forward by the traction rope, so that the third matching part 621 is gradually disengaged from the second matching part 52. When the third matching part 621 is completely disengaged from the second matching part 52, continue to press the release button 61, and the driving member 62 slides forward and can pull the third locking member 5 to rotate through the tension spring 64 until the connection between the lock hook 51 and the anchoring mechanism is disengaged, and the third locking mechanism is unlocked.

[0052] The unlocking mechanism further includes a fourth elastic member 65 for driving the release button 61 to reset. In this embodiment, the fourth elastic member 65 is a compression spring, and two ends of the compression spring are respectively arranged on the seat body and the release button 61.

[0053] The ISOFIX connection assembly further includes a first elastic member 8 for driving the inner tube 2 to extend to the maximum length outside the outer tube 1 when the ISOFIX connection assembly is in the initial state and the first locking mechanism is unlocked. The first elastic member 8 is a compression spring, and the two ends of the compression spring are respectively fixed on the inner tube 2 and the outer tube 1. In this embodiment, the first elastic member 8 is sleeved on the flexible connector 63.

[0054] The outer tube 1 of the ISOFIX connection assembly is fixedly arranged on the left and right sides of the seat body, respectively. The inner tube 2 is slidably arranged in the outer tube 1 on each side. The first locking member 31, the second locking member 41, the third locking member 5 and the driving member 62 are respectively arranged in the inner tube 2 on each side. The driving members 62 on both sides are respectively connected to the release button 61 through the traction rope. The release button 61 is arranged at the front of the seat body for easy operation. The ISOFIX connection assembly also includes a synchronous connecting rod 7 whose two ends are respectively fixedly connected to the inner tube 2 on both sides for driving the inner tube 2 on both sides to slide synchronously relative to the outer tube 1. In this way, when the release button 61 is pressed, the first locking mechanism and the third locking mechanism on both sides can be unlocked synchronously, and the inner tube 2 on both sides can be synchronously slid relative to the outer tube 1 through the synchronous connecting rod 7 to extend to the outside of the outer tube 1 or retract into the outer tube 1.

[0055] The outer tubes 1 on the left and right sides are respectively provided with slide grooves 14 extending in the front-to-back direction. The two ends of the synchronous connecting rod 7 pass through the slide grooves 14 and can slide along the length extension direction of the slide grooves 14. The slide grooves 14 can limit the sliding length of the inner tube 2 relative to the outer tube 1.

[0056] The child car seat works as follows:

[0057] When the child car seat is not installed on the car seat, for easy storage, the ISOFIX connection assembly is in the initial state, that is, the inner tube 2 is completely retracted into the outer tube 1, at this time, the first lock mechanism is in the locked state, and the first lock tongue 31 and the second lock tongue 32 are both located in the first lock groove 11. The second lock mechanism is in the unlocked state, and the third lock tongue 411 of the second locking member 41 is against the inner wall of the outer tube 1. Figure 3~Figure 5 shown.

[0058] When the child car seat needs to be installed on the car seat, the release button 61 is pressed, and the driving members 62 on both sides are pulled forward by the traction rope to slide forward, driving the first locking member 31 to slide forward as well. During this process, the first locking member 31 is driven to rotate relative to the driving member 62 through the cooperation between the fixing column 21 and the first matching portion 313, so that the first locking tongue 311 and the second locking tongue 312 are disengaged from the first locking groove 11, and the first locking mechanism is unlocked. A pressing portion 622 is provided on the driving member 62, and a blocking portion 412 is provided on the second locking member 41. During the unlocking process of the first locking mechanism, when the driving member 62 slides forward, the pressing portion 622 on the driving member 62 is pressed on the blocking portion 412 of the second locking member 41, so that the second locking member 41 cannot rotate relative to the inner tube 2, so that the second locking mechanism is always kept in the unlocked state. When the first locking mechanisms on both sides are unlocked, the inner tube 2 pops out to the outside of the outer tube 1 under the action of the elastic force of the first elastic member 8, and the length of the inner tube 2 extending to the outer tube 1 reaches the maximum. Figure 6 and Figure 7 shown.

[0059] Release the release button 61, the release button 61 is reset, the driving member 62 slides in the reverse direction and resets under the action of the tension spring 64, the first locking member 31 rotates in the reverse direction under the elastic force of the second elastic member 32 so that the first locking mechanism is locked again, and the ISOFIX connection assembly is in the connected state. At this time, the first locking tongue 311 and the second locking tongue 312 are both located in the second locking groove 12. In this state, the second locking member 41 is blocked by the inner wall of the outer tube 1, and the second locking mechanism remains unlocked. Figure 8~Figure 10 shown.

[0060] When the ISOFIX connection assembly is in a connected state, the third locking member 5 can be connected to the anchor mechanism on the car seat. When connected, the third locking member 5 rotates relative to the inner tube 2, and the driving member 62 is pulled to slide backward by the tension spring 64, so that the first locking member 31 also slides backward synchronously. In this process, the first locking member 31 rotates relative to the driving member 62 through the cooperation of the third contact surface 312b set at the rear of the second locking tongue 312 and the second locking groove 12, so that the first locking tongue 31 and the second locking tongue 32 gradually escape from the second locking groove 12. When the third locking mechanism is locked, the first locking mechanism is unlocked, and the second locking member 41 remains unlocked due to the obstruction of the inner wall of the outer tube 1. At this time, the inner tube 2 can be slid relative to the outer tube 1 in the direction of retracting into the outer tube 1 so that the ISOFIX connection assembly is in a suitable position, such as Fig.11 and Fig.12 shown.

[0061] When the ISOFIX connection assembly is in the position where the length of the inner tube 2 extending to the outer tube 1 reaches the maximum, it is the use position of the ISOFIX connection assembly, that is, when the ISOFIX connection assembly is in the maximum gear position, the third lock mechanism is locked, and the first lock mechanism and the second lock mechanism are both in the unlocked state. When the car collides, the maximum sliding distance of the inner tube 2 can be limited by the cooperation of the slide groove 14 and the synchronization link 7 to avoid hitting the front seat. Fig.11 and Fig.12 shown.

[0062] When the ISOFIX connection assembly is in the maximum gear position, when it is necessary to disconnect the connection between the ISOFIX connection assembly and the car seat, press the release button 61, pull the driving member 62 forward through the traction rope, so that the third matching portion 621 gradually disengages from the second matching portion 52. When the third matching portion 621 is completely disengaged from the second matching portion 52, continue to press the release button 61, the driving member 62 slides forward and can pull the third locking member 5 to rotate through the tension spring 64 until the connection between the lock hook 51 and the anchoring mechanism is disengaged, and the third locking mechanism is unlocked. When the driving member 62 slides forward, it drives the first locking member 31 to slide forward synchronously, and the first locking tongue 311 and the second locking tongue 312 gradually enter the second locking groove 12. When the third locking mechanism is unlocked, the first locking mechanism will lock the ISOFIX connection assembly in the connected state again. After the driving member 62 slides forward a certain distance, the pressing portion 622 on the driving member 62 is pressed on the blocking portion 412 of the second locking member 41, so that the second locking member 41 cannot rotate relative to the inner tube 2, so that the second locking mechanism always remains in the unlocked state. At this time, release the release button 61, and the release button 61 is reset. Since the fixed end of the third locking member 5 connected to the tension spring 64 is released, the driving member 62 maintains the current position or only has a small reset. The pressing portion 622 on the driving member 62 is still pressed on the blocking portion 412 of the second locking member 41, and the second locking mechanism remains in the unlocked state. The first locking mechanism is still in the locked state. Due to the cooperation of the slide groove 14 and the synchronous connecting rod 7, the inner tube 2 cannot slide in the direction of extending out of the outer tube 1. The first locking mechanism locks the ISOFIX connection assembly in the connected state, and the inner tube 2 cannot slide in the direction of retracting into the outer tube 1. Fig.13 and Fig.14 shown.

[0063] When the ISOFIX connection assembly is in the maximum gear position and the connection between the ISOFIX connection assembly and the car seat is disconnected, when the inner tube 2 needs to be retracted into the outer tube 1, the unlocking mechanism needs to be continuously operated to unlock the first locking mechanism. The process of unlocking the first locking mechanism is the same as above.

[0064] When the ISOFIX connection assembly is in the use position of the ISOFIX connection assembly when the inner tube 2 is retracted to a certain length of the outer tube 1, that is, when the ISOFIX connection assembly is in the middle gear position, the third lock mechanism is locked, and the second locking member 41 rotates under the elastic force of the third elastic member 42, so that the third locking tongue 411 is inserted into the third locking groove 13, and the second lock mechanism is locked, and the inner tube 2 cannot slide in the direction of extending out of the outer tube 1. Fig.15 and Fig.16 shown.

[0065] When the ISOFIX connection assembly is in the middle gear position, when it is necessary to disconnect the connection between the ISOFIX connection assembly and the car seat, press the release button 61, pull the drive member 62 forward by the traction rope, and the drive member 62 is provided with a slot 623, and the blocking portion 412 on the second locking member 41 enters the slot 623, so as not to block the drive member 62 from continuing to slide forward, so that the third matching portion 621 gradually disengages from the second matching portion 52. When the third matching portion 621 is completely disengaged from the second matching portion 52, continue to press the release button 61, and the drive member 62 slides forward and can pull the third locking member 5 to rotate through the tension spring 64 until the connection between the lock hook 51 and the anchoring mechanism is disengaged, and the third locking mechanism is unlocked. Release the release button 61, the release button 61 is reset, the drive member 62 still maintains the current state or only has a small reset, and the second locking mechanism always remains in the locked state, such as Fig.17 and Fig.18 shown.

[0066] When the ISOFIX connection assembly is in the middle gear position and the connection between the ISOFIX connection assembly and the car seat is disconnected, when it is necessary to retract the inner tube 2 into the outer tube 1, the inner tube 2 slides, and the second locking member 41 rotates relative to the inner tube 2 through the cooperation between the inclined surface at the front of the second locking member 41 and the third locking groove 13, until the third locking tongue 411 escapes from the third locking groove 13, the second locking mechanism is unlocked, and the inner tube 2 can be retracted into the outer tube 1. Fig.19 and Fig. 20 shown.

[0067] The front and rear directions mentioned above are defined by the front and rear of the car after the child car seat is connected to the car seat.

[0068] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A child car seat, comprising a seat body and an ISOFIX connection assembly arranged on the seat body, the ISOFIX connection assembly comprising an outer tube and an inner tube slidably arranged in the outer tube along the length extension direction of the outer tube, characterized in that: The ISOFIX connection assembly has an initial state in which the inner tube is completely retracted into the outer tube and a connection state in which the inner tube is extended to the outside of the outer tube to the maximum length. The ISOFIX connection assembly also includes a first locking mechanism for locking the ISOFIX connection assembly in the initial state and the connection state, respectively, and an unlocking mechanism for driving the first locking mechanism to unlock. The unlocking mechanism includes a release button slidably arranged on the seat body, a driving member slidably arranged in the inner tube along the length extension direction of the inner tube, and a flexible connecting member with two ends respectively connected to the release button and the driving member. The first locking mechanism includes a first locking member rotatably arranged on the driving member. When the release button is pressed to unlock the first locking mechanism, the driving member is pulled by the flexible connecting member to slide relative to the inner tube, and the first locking member is driven to rotate relative to the driving member to unlock the first locking mechanism. The ISOFIX connection assembly also includes a first elastic member for driving the inner tube to extend to the outside of the outer tube to the maximum length after the first locking mechanism of the ISOFIX connection assembly is unlocked in the initial state. The first locking member is provided with a first locking tongue and a second locking tongue, and the outer tube is respectively provided with a first locking groove and a second locking groove. When the ISOFIX connection component is locked in an initial state, the first locking tongue and the second locking tongue are both located in the first locking groove, and a first contact surface provided on the first locking tongue is against the first locking groove. When the ISOFIX connection component is locked in a connected state, the first locking tongue and the second locking tongue are both located in the second locking groove, and a second contact surface provided on the second locking tongue is against the second locking groove. When the first locking mechanism is in an unlocked state, the first locking tongue and the second locking tongue are both out of the first locking groove and the second locking groove.

2. The child car seat according to claim 1, characterized in that: A fixing column is fixedly arranged on the inner tube, a first matching portion is arranged on the first locking member, and an outer cylindrical surface of the fixing column abuts against the first matching portion.

3. The child car seat according to claim 1, characterized in that: The ISOFIX connection assembly also includes a second lock mechanism for preventing the inner tube from sliding in a direction extending out of the outer tube, the second lock mechanism including a second locking member rotatably arranged in the inner tube and a third lock groove arranged on the outer tube, the second locking member having a third lock tongue, the third lock groove cooperating with the third lock tongue, when the second lock mechanism is in a locked state, the third lock tongue is inserted in the third lock groove, when the second lock mechanism is in an unlocked state, the third lock tongue is disengaged from the third lock groove, and when the second lock mechanism is in a locked state, the first lock mechanism is in an unlocked state.

4. The child car seat according to claim 3, characterized in that: When the ISOFIX connection assembly is locked in the initial state and the connection state, the second locking mechanism is in the unlocked state, the second locking member is located in the inner tube and the third locking tongue is against the inner wall of the outer tube.

5. The child car seat according to claim 3, characterized in that: A pressing portion is provided on the driving member, and a blocking portion is provided on the second locking member. When the release button is pressed in the initial state or the connected state of the ISOFIX connection assembly to drive the first lock mechanism to be unlocked, the driving member slides forward, and the pressing portion is pressed on the blocking portion, so that the second lock mechanism is in an unlocked state.

6. The child car seat according to claim 3, characterized in that: The driving member is provided with a slot, and the second locking member is provided with a blocking portion. When the second locking mechanism is in a locked state and the release button is pressed to slide the driving member forward, the blocking portion is located in the slot and can slide relative to the slot.

7. The child car seat according to claim 1, characterized in that: The ISOFIX connection assembly also includes a third lock mechanism that can be connected to and locked with a car seat, the third lock mechanism includes a third lock piece rotatably arranged on the inner tube, the unlocking mechanism also includes a tension spring whose two ends are respectively connected to the driving member and the third lock piece, the third lock piece is provided with a second matching portion, and the driving member is provided with a third matching portion, when the third lock mechanism is in a locked state, the third matching portion is stuck in the second matching portion, when the third lock mechanism is in an unlocked state, the third matching portion is away from the second matching portion, when the ISOFIX connection assembly is in a connected state, the third lock piece can be connected to the car seat, when the third lock mechanism is in a locked state, the first lock mechanism is in an unlocked state, and when the third lock mechanism is in an unlocked state, the first lock mechanism is in a locked state.

8. The child car seat according to claim 7, characterized in that: A second locking tongue is provided on the first locking member, and a second locking groove is provided on the outer tube. When the ISOFIX connection assembly is locked in a connected state, the second locking tongue is located in the second locking groove, and the rear portion of the second locking tongue has a third contact surface. When the third locking member is connected to the car seat, the driving member and the first locking member are pulled to slide backward by the tension spring, and the third contact surface cooperates with the second locking groove to rotate the first locking member relative to the driving member, thereby unlocking the first locking mechanism.

9. The child car seat according to claim 1, characterized in that: The outer tubes are fixedly arranged on the left and right sides of the seat body respectively, and the inner tube is slidably arranged in the outer tube on each side. The ISOFIX connection assembly also includes a synchronous connecting rod whose two ends are fixedly connected to the inner tubes on both sides respectively for driving the inner tubes on both sides to slide synchronously relative to the outer tube.

10. The child car seat according to claim 9, characterized in that: The outer tube on each side is provided with a slide groove extending in the front-rear direction, and the synchronous connecting rod passes through the slide groove and can be slidably arranged along the length extension direction of the slide groove.

11. The child car seat according to claim 1, characterized in that: The outer tubes are fixedly arranged on the left and right sides of the seat body respectively, the inner tube is slidably arranged in the outer tube on each side, the driving member and the first locking member are respectively arranged in the inner tube on each side, the release button can be slidably arranged in the front part of the seat body, and the driving members on both sides are connected to the release button through the flexible connecting member.

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