A child safety seat with a linkage unlocking function

Abstract

The present invention provides a child safety seat with a linkage release function, comprising a chair body, a base, a rotating disk, a lock release handle and a pulling and pressing dual-purpose piece, the base is also movably connected with a rotating lock release component locked with the rotating disk, and the rotating lock release component and the lock release handle are both movably connected with the pulling and pressing dual-purpose piece; the chair body is provided with a front lock rod and a rear lock rod, the rotating disk is movably connected with a front hook for locking and cooperating with the front lock rod and a rear hook for locking and cooperating with the rear lock rod; the seat comprises a front hook release component for driving the front hook to unlock and a rear hook release component for driving the rear hook to unlock, the front hook release component and the rear hook release component are both linked to the lock release handle; the pulling and pressing dual-purpose piece is pulled to drive the lock release handle to release the lock, and the lock release handle drives the front hook release component and the rear hook release component to act simultaneously, so that the front hook release component drives the front hook and the rear hook release component drives the rear hook to release the lock simultaneously to unlock the chair body, the structure is simple, the number of parts is small, the cost is low, and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive safety supplies, and more particularly, to a child safety seat with a linkage unlocking function. Background Art

[0002] A child safety seat generally includes a base and a rotating disk that are rotatably connected to each other. A carrycot or a safety seat is detachably connected to the rotating disk. The carrycot is mainly for use by infants at a relatively young age, and the safety seat is mainly for use by children at a relatively older age. In order to facilitate the alternative installation of the carrycot or the safety seat on the base or to facilitate the removal of the carrycot or the safety seat, a unlocking structure is provided between the base and the carrycot or the safety seat. However, the existing unlocking structures are all designed to be relatively complex, with many components and cumbersome operations. Summary of the Invention

[0003] To solve at least one of the above problems, the present invention provides a child safety seat with a linkage unlocking function, including a seat body, a base, a rotating disk, an unlocking handle, and a pull-and-press dual-purpose member. The rotating disk is rotatably connected to the base. The unlocking handle and the pull-and-press dual-purpose member are both movably connected to the base. The base is also movably connected to a rotating unlocking assembly that locks the rotating disk. The rotating unlocking assembly and the unlocking handle are both movably connected to the pull-and-press dual-purpose member. The seat body is provided with a front locking rod and a rear locking rod. The rotating disk is movably connected to a front hook that is used for locking and cooperating with the front locking rod and a rear hook that is used for locking and cooperating with the rear locking rod. The invention further includes a front hook unlocking assembly for driving the front hook to unlock and a rear hook unlocking assembly for driving the rear hook to unlock. The front hook unlocking assembly and the rear hook unlocking assembly are both linked to the unlocking handle. When the pull-and-press dual-purpose member is pulled to drive the unlocking handle to unlock, the unlocking handle drives the front hook unlocking assembly and the rear hook unlocking assembly to act simultaneously, so that the front hook unlocking assembly drives the front hook and the rear hook unlocking assembly drives the rear hook to unlock simultaneously to unlock the seat body.

[0004] Optionally, the front hook unlocking assembly includes a front hook unlocking driving member and a front hook locking limiting rod connected to each other. The unlocking handle is linked to the front hook unlocking driving member. When the front hook and the front locking rod are locked to each other, the front hook locking limiting rod cooperates with the front hook to limit the movement of the front hook. When the pulling and pressing dual-purpose member is pulled to drive the unlocking handle, the front hook unlocking driving member drives the front hook locking limiting rod to move so that the front hook locking limiting rod is disengaged from the front hook, realizing the unlocking of the front hook. The rear hook unlocking assembly includes a rear hook unlocking driving member and a rear hook locking limiting rod connected to each other. The unlocking handle is linked to the rear hook unlocking driving member. When the rear hook and the rear locking rod are locked to each other, the rear hook locking limiting rod cooperates with the rear hook to limit the movement of the rear hook. When the pulling and pressing dual-purpose member is pulled to drive the unlocking handle, the rear hook unlocking driving member drives the rear hook locking limiting rod to move so that the rear hook locking limiting rod is disengaged from the rear hook, realizing the unlocking of the rear hook.

[0005] Optionally, the front hook unlocking driving member is provided with a front driving block, and the rear hook unlocking driving member is provided with a rear driving block. The base is hingedly connected with a front hook unlocking block. The front hook unlocking block is provided with a third pin shaft, an abutting block, and a front dialing block that is hooked and connected to the front side of the front driving block. The front dialing block and the abutting block are respectively located on the upper and lower sides of the third pin shaft. The unlocking handle is provided with a rear hook unlocking block that is hooked and connected to the rear side of the rear driving block and a slope that abuts against the rear side of the abutting block. When the pulling and pressing dual-purpose member is pulled to drive the unlocking handle to move forward, the rear hook unlocking block moves to drive the rear driving block to move forward, and the slope moves forward to drive the front hook unlocking block to rotate so that the front dialing block flips backward to realize the front dialing block driving the front driving block to move backward.

[0006] Optionally, the front hook unlocking assembly further includes a front hook reset elastic member, and both ends of the front hook reset elastic member are respectively connected to the front hook unlocking driving member and the rotating disk. The rear hook unlocking assembly further includes a rear hook reset elastic member, and both ends of the rear hook reset elastic member are respectively connected to the rear hook unlocking driving member and the rotating disk.

[0007] Optionally, the front hook unlocking driving member is provided with a front driving block, and the rear hook unlocking driving member is provided with a rear driving block. The base is movably connected with a first-side unlocking member and a second-side unlocking member. The first-side unlocking member is provided with a first-side dialing block that is hooked and connected to the front driving block, and the second-side unlocking member is provided with a second-side dialing block that is hooked and connected to the rear driving block. When the pulling and pressing dual-purpose member is pulled to drive the unlocking handle to move forward, the first-side dialing block moves to drive the front driving block to move leftward, and the second-side dialing block moves to drive the rear driving block to move rightward.

[0008] Optionally, the unlocking handle is provided with a first cylinder and a second cylinder. The first side unlocking member is provided with a first side inclined slot that slidably cooperates with the first cylinder, and the second side unlocking member is provided with a second side inclined slot that slidably cooperates with the second cylinder. The base is provided with a guide rail for the left-right sliding of the first side unlocking member and the second side unlocking member.

[0009] Optionally, the front hook unlocking driving member is provided with a front inclined slot, and the rear hook unlocking driving member is provided with a rear inclined slot. The rotating disc is provided with a front vertical slot corresponding to the position of the front inclined slot and a rear vertical slot corresponding to the position of the rear inclined slot. The front hook locking limit rod penetrates through the front inclined slot and the front vertical slot and is slidably connected to the front inclined slot and the front vertical slot. When pulling the pull-and-press member to drive the unlocking handle, the front hook unlocking driving member drives the front hook locking limit rod to move from one end of the front vertical slot to the other end, so that the front hook locking limit rod is disengaged from the front hook, realizing the unlocking of the front hook. The rear hook locking limit rod penetrates through the rear inclined slot and the rear vertical slot and is slidably connected to the rear inclined slot and the rear vertical slot. When pulling the pull-and-press member to drive the unlocking handle, the rear hook unlocking driving member drives the rear hook locking limit rod to move from one end of the rear vertical slot to the other end, so that the rear hook locking limit rod is disengaged from the rear hook, realizing the unlocking of the rear hook.

[0010] Optionally, the front hook is provided with a front locking slot for locking and cooperating with the front locking rod and a front limiting portion for abutting against the front hook locking limit rod. The rear hook is provided with a rear locking slot for locking and cooperating with the rear locking rod and a rear limiting portion for abutting against the rear hook locking limit rod. Both the front hook and the rear hook are hinged to the rotating disc. The front hook elastic member and the rear hook elastic member are further included. Two ends of the front hook elastic member are respectively connected to the front hook and the rotating disc, and two ends of the rear hook elastic member are respectively connected to the rear hook and the rotating disc.

[0011] Optionally, when pressing down the pull-and-press member, the rotating unlocking assembly is disengaged from the rotating disc to realize the rotating unlocking of the rotating disc. The base is provided with a waist-shaped slot, and the pull-and-press member is provided with a first pin shaft movably connected to the waist-shaped slot. When pressing down the pull-and-press member, the pull-and-press member rotates around the first pin shaft, and the first pin shaft is rotatably connected to the waist-shaped slot. When pulling the pull-and-press member forward, the first pin shaft moves forward in the waist-shaped slot, and the first pin shaft is slidably connected to the waist-shaped slot. When it is necessary to press down the pull-and-press member to realize the rotating unlocking of the rotating disc, the first pin shaft abuts against the rear end of the waist-shaped slot.

[0012] Optionally, the lock release handle is provided with an abutment platform, and the front end of the pulling and pressing dual-purpose piece is provided with an abutment surface. When the pulling and pressing dual-purpose piece is pulled forward, the abutment surface abuts against the abutment platform; it also includes a reset elastic piece, and both ends of the reset elastic piece are respectively connected to the pulling and pressing dual-purpose piece and the base.

[0013] Optionally, the rotary release assembly includes a rotary release block and a rotary release elastic member, the rotary release block is provided with a second pin shaft, the base is provided with a hinge hole hingedly connected to the second pin shaft, two ends of the rotary release elastic member are respectively connected to the rotary release block and the base, the rotary release block abuts against the tension and compression dual-purpose member; when the tension and compression dual-purpose member is not pressed downward, the rotary release block is locked with the rotating disk; when the tension and compression dual-purpose member is pressed downward, the rotary release block is subjected to downward pressure and rotates around the second pin shaft and then disengages from the rotating disk to realize the rotary release of the rotating disk.

[0014] Optionally, a plurality of mounting grooves are provided at intervals on the edge of the rotating disk, and one of the plurality of mounting grooves is plugged and locked with the rotating release block; the rotating release block is provided with a clearance groove so that the pulling and pressing dual-purpose part can be separated from the rotating release block when the pulling and pressing dual-purpose part is pulled forward; the rotating release block is provided with a protrusion that abuts against the rear end of the pulling and pressing dual-purpose part.

[0015] Compared with the prior art, the child safety seat with a linkage release function in the present invention drives the front hook release assembly and the rear hook release assembly to move simultaneously by pulling the pull-and-press dual-purpose piece to drive the release handle, thereby driving the front hook and the rear hook to release the locks at the same time. This structure in which the front hook and the rear hook are simultaneously released in linkage with each other by pulling the release handle has a simple structure, few parts, low cost, and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A partial explosion of a child safety seat with a linkage release function according to an embodiment of the present invention Figure One ;

[0017] Figure 2 A partial explosion of a child safety seat with a linkage release function according to an embodiment of the present invention Figure Two ;

[0018] Figure 3 A structural diagram of a chair body according to an embodiment of the present invention;

[0019] Figure 4 It is a structural diagram of the assembly of the unlocking handle, the first side unlocking member and the second side unlocking member according to an embodiment of the present invention;

[0020] Figure 5 It is a structural diagram of the assembly of the base and the unlocking handle according to an embodiment of the present invention;

[0021] Figure 6 Partial structural view of the child safety seat with a linkage unlocking function in the locked state according to an embodiment of the present invention;

[0022] Figure 7 Partial structural view of the child safety seat with a linkage unlocking function in the unlocked state according to an embodiment of the present invention;

[0023] Figure 8 Cross-sectional view of the child safety seat with a linkage unlocking function in the locked state according to an embodiment of the present invention;

[0024] Figure 9 is Figure 8 An enlarged view of part A in;

[0025] Figure 10 is Figure 8 An enlarged view of part B in;

[0026] Figure 11 Cross-sectional view of the child safety seat with a linkage unlocking function in the unlocked state according to an embodiment of the present invention;

[0027] Figure 12 is Figure 11 An enlarged view of part C in;

[0028] Figure 13 is Figure 11 An enlarged view of part D in;

[0029] Figure 14 Cross-sectional view of the child safety seat with a linkage unlocking function when the rotating disk rotates to the 90° position and is locked according to an embodiment of the present invention;

[0030] Figure 15 is Figure 14 An enlarged view of part E in;

[0031] Figure 16 is Figure 14 An enlarged view of part F in;

[0032] Figure 17 Cross-sectional view of the child safety seat with a linkage unlocking function when the rotating disk rotates to the 90° position and is unlocked according to an embodiment of the present invention;

[0033] Figure 18 is Figure 17 An enlarged view of part G in;

[0034] Figure 19 is Figure 17 An enlarged view of part H in;

[0035] Figure 20Partial explosion of the child safety seat with a linkage unlocking function according to an embodiment of the present invention Figure Three ;

[0036] Figure 21 Partial structure of the child safety seat with a linkage unlocking function according to an embodiment of the present invention Figure One ;

[0037] Figure 22 Structural diagram of the rotating disc according to an embodiment of the present invention;

[0038] Figure 23 Partial cross-sectional view of the child safety seat with a linkage unlocking function according to an embodiment of the present invention in the initial state;

[0039] Figure 24 Partial cross-sectional view of the child safety seat with a linkage unlocking function according to an embodiment of the present invention when pressing the push-pull member;

[0040] Figure 25 Partial cross-sectional view of the child safety seat with a linkage unlocking function according to an embodiment of the present invention when pulling the push-pull member;

[0041] Figure 26 Partial structure of the child safety seat with a linkage unlocking function according to an embodiment of the present invention Figure Two ;

[0042] Figure 27 is Figure 26 Enlarged view of part I in

[0043] Figure 28 Structural diagram of the rotating unlocking block according to an embodiment of the present invention;

[0044] Figure 29 Partial cross-sectional view of the child safety seat with a linkage unlocking function according to an embodiment of the present invention when locked.

[0045] Explanation of reference numerals:

[0046] 1. Seat body; 11. Front locking rod; 12. Rear locking rod; 2. Base; 21. Guide rail; 22. Hinge hole; 23. Waist-shaped slot; 24. Cylindrical column; 3. Rotating disk; 31. Front vertical slot; 32. Rear vertical slot; 33. Installation slot; 34. Installation hole; 4. Unlocking handle; 41. Rear hook unlocking block; 42. Slope; 43. First cylinder; 44. Second cylinder; 45. Contact platform; 5. Front hook; 51. Front locking slot; 52. Front limiting part; 6. Rear hook; 61. Rear locking slot; 62. Rear limiting part; 7. Front hook unlocking assembly; 71. Front hook unlocking driving part; 711. Front driving block; 712. Front inclined slot; 72. Front hook locking and limiting rod; 73. Front hook reset elastic part; 8. Rear hook unlocking assembly; 81. Rear hook unlocking driving part; 811. Rear driving block; 812. Rear inclined slot; 82. Rear hook locking and limiting rod; 83. Rear hook reset elastic part; 9. Front hook unlocking block; 91. Third pin shaft; 92. Contact block; 93. Front dialing block; 10. First side unlocking part; 101. First side dialing block; 102. First side inclined slot; 20. Second side unlocking part; 201. Second side dialing block; 202. Second side inclined slot; 30. Front hook elastic part; 40. Rear hook elastic part; 50. Pulling and pressing dual-purpose part; 501. First pin shaft; 502. Contact surface; 60. Rotating unlocking assembly; 601. Rotating unlocking block; 6011. Protrusion; 6012. Yielding groove; 6013. Second pin shaft; 60131. Notch; 6014. Insertion part; 602. Rotating unlocking elastic part; 70. Reset elastic part. Detailed implementation manners

[0047] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship during the normal use of the product.

[0049] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the drawings of the embodiments of the present invention, a coordinate system XYZ is set, where the positive direction of the X-axis represents the left side, the negative direction of the X-axis represents the right side, the positive direction of the Y-axis represents the front side, the negative direction of the Y-axis represents the rear side, the positive direction of the Z-axis represents the upper side, and the negative direction of the Z-axis represents the lower side.

[0050] An embodiment of the present invention provides a child safety seat with a linkage unlocking function. Combining Figures 1 to 25As shown in the figure, it includes a chair body 1, a base 2, a rotating disk 3, a release lock handle 4, and a pull-press dual-purpose part 50. The rotating disk 3 is rotatably connected to the base 2. The release lock handle 4 and the pull-press dual-purpose part 50 are both movably connected to the base 2. The base 2 is also movably connected to a rotation release lock assembly 60 that locks the rotating disk 3. Both the rotation release lock assembly 60 and the release lock handle 4 are movably connected to the pull-press dual-purpose part 50. The chair body 1 is provided with a front lock rod 11 and a rear lock rod 12. The rotating disk 3 is movably connected with a front hook 5 for locking and cooperating with the front lock rod 11 and a rear hook 6 for locking and cooperating with the rear lock rod 12. It also includes a front hook release lock assembly 7 for driving the front hook 5 to unlock and a rear hook release lock assembly 8 for driving the rear hook 6 to unlock. Both the front hook release lock assembly 7 and the rear hook release lock assembly 8 are linked and connected to the release lock handle 4. When the pull-press dual-purpose part 50 is pulled to drive the release lock handle 4 to release the lock, the release lock handle 4 drives the front hook release lock assembly 7 and the rear hook release lock assembly 8 to act simultaneously, so that the front hook release lock assembly 7 drives the front hook 5 and the rear hook release lock assembly 8 drives the rear hook 6 to release the lock simultaneously to unlock the chair body 1.

[0051] Among them, a chair body is detachably installed on the rotating disk 3. When the pull-press dual-purpose part 50 is in the initial state, the chair body is locked with the rotating disk 3 so that the chair body is firmly installed, and the rotating disk 3 is locked with the rotation release lock assembly 60 so that the rotating disk 3 cannot rotate relative to the base 2, that is, the chair body cannot rotate relative to the base 2. When the release lock handle 4 moves forward, the locking structure between the chair body and the rotating disk 3 can be released, so that the chair body can be detached from the rotating disk 3. The base 2 is used to install the rotating disk 3 and the release lock handle 4, and the base 2 is also used to connect with an automobile seat. The chair body 1 is a safety seat or a baby carrier. The front lock rod 11 and the rear lock rod 12 are respectively arranged at the front and rear ends of the bottom of the chair body 1. The preferred way for the front hook 5 to be movably connected with the rotating disk 3 is hinged connection. The front hook 5 and the rotating disk 3 are hinged through the cooperation of a shaft and a shaft hole structure, and the front hook 5 rotates to lock or release the lock with the front lock rod 11. Similarly, the preferred way for the rear hook 6 to be movably connected with the rotating disk 3 is hinged connection. The rear hook 6 and the rotating disk 3 are also hinged through the cooperation of a shaft and a shaft hole structure, and the rear hook 6 rotates to lock or release the lock with the rear lock rod 12. In addition, the way for the front hook 5 to be movably connected with the rotating disk 3 and the way for the rear hook 6 to be movably connected with the rotating disk 3 can also be sliding connection. The front hook 5 moves horizontally to lock or release the lock with the front lock rod 11, and the rear hook 6 moves horizontally to lock or release the lock with the rear lock rod 12.

[0052] When the chair body 1 is locked, the front hook 5 is locked with the front lock rod 11, and the rear hook 6 is locked with the rear lock rod 12 for infants and young children to use when riding in a vehicle; when it is necessary to unlock the chair body 1, the user first applies a force to the unlocking handle 4 to pull the unlocking handle 4 to move forward. The unlocking handle 4 drives the front hook unlocking assembly 7 and the rear hook unlocking assembly 8 to act simultaneously. The front hook unlocking assembly 7 drives the front hook 5 to act so that the front hook 5 is disengaged from the front lock rod 11 to achieve unlocking. At the same time, the rear hook unlocking assembly 8 drives the rear hook 6 to act so that the rear hook 6 is disengaged from the rear lock rod 12 to achieve unlocking, thereby completing the unlocking of the chair body 1.

[0053] In the child safety seat with a linkage unlocking function in this embodiment, by pulling the dual-purpose pulling and pressing member 50 to drive the unlocking handle 4, the front hook unlocking assembly 7 and the rear hook unlocking assembly 8 are driven to act simultaneously, so as to drive the front hook 5 and the rear hook 6 to unlock simultaneously. This structure that realizes the simultaneous linkage unlocking of the front hook 5 and the rear hook 6 through an action of pulling the unlocking handle 4 has a simple structure, few components, low cost, and is also convenient to operate.

[0054] Optionally, as shown in Figures 1 to 19 the front hook unlocking assembly 7 includes a front hook unlocking driving member 71 and a front hook locking and limiting rod 72 which are connected to each other. The unlocking handle 4 is linked to the front hook unlocking driving member 71. When the front hook 5 is locked with the front lock rod 11, the front hook locking and limiting rod 72 cooperates with the front hook 5 to limit the movement of the front hook 5. When the unlocking handle 4 is pulled, the front hook unlocking driving member 71 drives the front hook locking and limiting rod 72 to move so that the front hook locking and limiting rod 72 is disengaged from the front hook 5, realizing the unlocking of the front hook 5; the rear hook unlocking assembly 8 includes a rear hook unlocking driving member 81 and a rear hook locking and limiting rod 82 which are connected to each other. The unlocking handle 4 is linked to the rear hook unlocking driving member 81. When the rear hook 6 is locked with the rear lock rod 12, the rear hook locking and limiting rod 82 cooperates with the rear hook 6 to limit the movement of the rear hook 6. When the unlocking handle 4 is pulled, the rear hook unlocking driving member 81 drives the rear hook locking and limiting rod 82 to move so that the rear hook locking and limiting rod 82 is disengaged from the rear hook 6, realizing the unlocking of the rear hook 6.

[0055] When the chair body 1 is locked, the front hook locking limiting rod 72 cooperates with the front hook 5 to limit the movement of the front hook 5, so that the front hook 5 is locked with the front locking rod 11. The rear hook locking limiting rod 82 cooperates with the rear hook 6 to limit the movement of the rear hook 6, so that the rear hook 6 is locked with the rear locking rod 12. When it is necessary to unlock the chair body 1, the user first applies a force to the unlocking handle 4 to pull the unlocking handle 4 to move forward. The unlocking handle 4 drives the front hook unlocking driving member 71 and the rear hook unlocking driving member 81 to act simultaneously. The front hook unlocking driving member 71 drives the front hook locking limiting rod 72 to move so that the front hook locking limiting rod 72 is disengaged from the front hook 5, and the rear hook unlocking driving member 81 drives the rear hook locking limiting rod 82 to move so that the rear hook locking limiting rod 82 is disengaged from the rear hook 6, thereby realizing the simultaneous unlocking of the front hook 5 and the rear hook 6 and completing the unlocking of the chair body 1.

[0056] In this embodiment, the front hook unlocking driving member 71 and the front hook locking limiting rod 72 which are connected to each other and can move synchronously with the unlocking handle 4 are provided, and the rear hook unlocking driving member 81 and the rear hook locking limiting rod 82 which are connected to each other and can move synchronously with the unlocking handle 4 are provided. The locking and unlocking of the front hook 5 and the front locking rod 11 are realized by the cooperation and disengagement of the front hook locking limiting rod 72 and the front hook 5, and the locking and unlocking of the rear hook 6 and the rear locking rod 12 are realized by the cooperation and disengagement of the rear hook locking limiting rod 82 and the rear hook 6. The structure is simple and reliable, and the operation is convenient.

[0057] Optionally, as shown in Figures 1 to 13 The front hook unlocking driving member 71 is provided with a front driving block 711, the rear hook unlocking driving member 81 is provided with a rear driving block 811, the base 2 is hinged with a front hook unlocking block 9. The front hook unlocking block 9 is provided with a third pin shaft 91, an abutting block 92 and a front dial block 93 which is hooked and connected with the front side of the front driving block 711. The front dial block 93 and the abutting block 92 are respectively located on the upper and lower sides of the third pin shaft 91. The unlocking handle 4 is provided with a rear hook unlocking block 41 which is hooked and connected with the rear side of the rear driving block 811 and a slope 42 which abuts against the rear side of the abutting block 92. When the unlocking handle 4 is pulled forward, the rear hook unlocking block 41 moves to drive the rear driving block 811 to move forward, and the slope 42 moves forward to drive the front hook unlocking block 9 to rotate so that the front dial block 93 flips backward to realize the front dial block 93 driving the front driving block 711 to move backward.

[0058] Among them, the third pin shaft 91 is horizontally arranged, and the base 2 is provided with a through hole cooperating with the third pin shaft 91 to realize the hinged connection between the front hook unlocking block 9 and the base 2; the slope 42 is an inclined surface with a lower front and a higher rear, and both the front hook unlocking driving member 71 and the rear hook unlocking driving member 81 are located above the unlocking handle 4. In this embodiment, by hooking and connecting the front driving block 711 with the front dial block 93 and hooking and connecting the rear driving block 811 with the rear hook unlocking block 41, when the unlocking handle 4 is pulled forward, the front hook unlocking driving member 71 and the rear hook unlocking driving member 81 can approach each other to unlock the front hook 5 and the rear hook 6 respectively, with a simple structure and convenient operation.

[0059] When it is necessary to unlock the chair body 1, the user first applies a force to the unlocking handle 4 to pull the unlocking handle 4 forward, so that the rear hook unlocking block 41 drives the rear driving block 811 to move forward, and at the same time, the slope 42 moves forward to drive the front hook unlocking block 9 to flip so that the abutting block 92 moves forward and the front dial block 93 moves backward. The movement of the rear driving block 811 drives the rear hook locking and limiting rod 82 to move so that the rear hook locking and limiting rod 82 is disengaged from the rear hook 6. The backward movement of the front dial block 93 drives the front driving block 711 to move backward, and the movement of the front driving block 711 drives the front hook locking and limiting rod 72 to move so that the front hook locking and limiting rod 72 is disengaged from the front hook 5, thereby realizing the simultaneous unlocking of the front hook 5 and the rear hook 6 and completing the unlocking of the chair body 1.

[0060] Optionally, as shown in Figures 1 to 19 the front hook unlocking driving member 71 is provided with a front inclined groove 712, the rear hook unlocking driving member 81 is provided with a rear inclined groove 812, and the rotating disc 3 is provided with a front vertical groove 31 corresponding to the position of the front inclined groove 712 and a rear vertical groove 32 corresponding to the position of the rear inclined groove 812; the front hook locking and limiting rod 72 passes through the front inclined groove 712 and the front vertical groove 31 and is slidably connected to the front inclined groove 712 and the front vertical groove 31. When the unlocking handle 4 is pulled, the front hook unlocking driving member 71 drives the front hook locking and limiting rod 72 to move from one end of the front vertical groove 31 to the other end, so that the front hook locking and limiting rod 72 is disengaged from the front hook 5 to realize the unlocking of the front hook 5; the rear hook locking and limiting rod 82 passes through the rear inclined groove 812 and the rear vertical groove 32 and is slidably connected to the rear inclined groove 812 and the rear vertical groove 32. When the unlocking handle 4 is pulled, the rear hook unlocking driving member 81 drives the rear hook locking and limiting rod 82 to move from one end of the rear vertical groove 32 to the other end, so that the rear hook locking and limiting rod 82 is disengaged from the rear hook 6 to realize the unlocking of the rear hook 6.

[0061] Among them, the inclination direction of the front inclined groove 712 is lower in the front and higher in the rear, and the inclination direction of the rear inclined groove 812 is higher in the front and lower in the rear. The length directions of the front vertical groove 31 and the rear vertical groove 32 are perpendicular to the rotation plane of the rotating disc 3. The front inclined groove 712, the rear inclined groove 812, the front vertical groove 31, and the rear vertical groove 32 all have a certain length, so that the front hook locking and limiting rod 72 can slide in the front inclined groove 712 and the front vertical groove 31, and the rear hook locking and limiting rod 82 can slide in the rear inclined groove 812 and the rear vertical groove 32. The widths of the front inclined groove 712 and the front vertical groove 31 are close to the outer diameter of the front hook locking and limiting rod 72, and the widths of the rear inclined groove 812 and the rear vertical groove 32 are close to the outer diameter of the rear hook locking and limiting rod 82, so as to minimize the play of the structure.

[0062] When the front hook 5 and the front lock rod 11 are locked with each other, the front hook locking and limiting rod 72 cooperates with the front hook 5 to limit the movement of the front hook 5. At this time, the front hook locking and limiting rod 72 is located at the top of the front inclined groove 712 and the top of the front vertical groove 31. When the unlocking handle 4 is pulled, the front hook unlocking driving member 71 moves forward, and the front hook locking and limiting rod 72 moves from the top of the front inclined groove 712 to the bottom, and under the action of the front inclined groove 712, the front hook locking and limiting rod 72 also moves from the top of the front vertical groove 31 to the bottom at the same time, so that the front hook locking and limiting rod 72 moves downward and disengages from the front hook 5, realizing the unlocking of the front hook 5. When the rear hook 6 and the rear lock rod 12 are locked with each other, the rear hook locking and limiting rod 82 cooperates with the rear hook 6 to limit the movement of the rear hook 6. At this time, the rear hook locking and limiting rod 82 is located at the top of the rear inclined groove 812 and the top of the rear vertical groove 32. When the unlocking handle 4 is pulled, the rear hook unlocking driving member 81 moves backward, and the rear hook locking and limiting rod 82 moves from the top of the rear inclined groove 812 to the bottom, and under the action of the rear inclined groove 812, the rear hook locking and limiting rod 82 also moves from the top of the rear vertical groove 32 to the bottom at the same time, so that the rear hook locking and limiting rod 82 moves downward and disengages from the rear hook 6, realizing the unlocking of the rear hook 6.

[0063] Optionally, as shown in Figures 1 to 19 the front hook 5 is provided with a front lock groove 51 for locking and cooperating with the front lock rod 11 and a front limiting portion 52 for abutting against the front hook locking and limiting rod 72. The rear hook 6 is provided with a rear lock groove 61 for locking and cooperating with the rear lock rod 12 and a rear limiting portion 62 for abutting against the rear hook locking and limiting rod 82. Both the front hook 5 and the rear hook 6 are hinged to the rotating disc 3.

[0064] Among them, the number of both the front hook 5 and the rear hook 6 is two. The two front hooks 5 are arranged at intervals and are jointly locked to the front lock rod 11. The two rear hooks 6 are arranged at intervals and are jointly locked to the front lock rod 11, so that the chair body 1 can be firmly locked.

[0065] When the chair body 1 is locked, the front hook locking limit lever 72 abuts against the front limit portion 52 to limit the forward rotation of the front lock groove 51, so that the front hook 5 is locked with the front lock rod 11. The rear hook locking limit lever 82 abuts against the rear limit portion 62 to limit the backward rotation of the rear lock groove 61, so that the rear hook 6 is locked with the rear lock rod 12. When it is necessary to unlock the chair body 1, the user first applies a force to the unlocking handle 4 to pull the unlocking handle 4 to move forward. The unlocking handle 4 drives the front hook unlocking driving member 71 and the rear hook unlocking driving member 81 to act simultaneously. The front hook unlocking driving member 71 synchronously drives the front hook locking limit lever 72 to move so that the front hook locking limit lever 72 is disengaged from the front limit portion 52, enabling the front lock groove 51 to rotate forward and disengage from the front lock rod 11. And the rear hook unlocking driving member 81 drives the rear hook locking limit lever 82 to move so that the rear hook locking limit lever 82 is disengaged from the rear limit portion 62, enabling the rear lock groove 61 to rotate backward and disengage from the rear lock rod 12, thereby realizing the simultaneous unlocking of the front hook 5 and the rear hook 6 and completing the unlocking of the chair body 1.

[0066] Optionally, as shown in Figures 1 to 19 it also includes a front hook elastic member 30 and a rear hook elastic member 40. The two ends of the front hook elastic member 30 are respectively connected to the front hook 5 and the rotating disc 3, and the two ends of the rear hook elastic member 40 are respectively connected to the rear hook 6 and the rotating disc 3.

[0067] Among them, both the front hook elastic member 30 and the rear hook elastic member 40 are tension springs, enabling the front hook 5 to automatically rotate to unlock with the front lock rod 11 and the rear hook 6 to automatically rotate to unlock with the rear lock rod 12, making the operation more portable. When pulling the unlocking handle 4 forward to unlock, the front hook locking limit lever 72 is disengaged from the front limit portion 52. Under the action of the force of the front hook elastic member 30, the front hook 5 enables the front lock groove 51 to rotate forward to realize unlocking. At this time, when lifting the chair body 1 upward, the front lock groove 51 can be disengaged from the front lock rod 11 to disassemble the chair body 1. When pulling the unlocking handle 4 forward to unlock, the rear hook locking limit lever 82 is disengaged from the rear limit portion 62. Under the action of the force of the rear hook elastic member 40, the rear hook 6 enables the rear lock groove 61 to rotate backward to realize unlocking. At this time, when lifting the chair body 1 upward, the rear lock groove 61 can be disengaged from the rear lock rod 12 to disassemble the chair body 1.

[0068] Optionally, as shown in Figures 1 to 19 it, the front hook unlocking assembly 7 further includes a front hook return elastic member 73, and the two ends of the front hook return elastic member 73 are respectively connected to the front hook unlocking driving member 71 and the rotating disc 3. The rear hook unlocking assembly 8 further includes a rear hook return elastic member 83, and the two ends of the rear hook return elastic member 83 are respectively connected to the rear hook unlocking driving member 81 and the rotating disc 3.

[0069] Among them, the front hook reset elastic member 73 and the rear hook reset elastic member 83 are both compression springs. The two ends of the front hook reset elastic member 73 are respectively connected to the front elastic member column of the front hook unlocking driving member 71 and the first elastic member column of the rotating disk 3, so that the front hook unlocking driving member 71 can automatically reset after the user releases the unlocking handle 4. The two ends of the rear hook reset elastic member 83 are respectively connected to the rear elastic member column of the rear hook unlocking driving member 81 and the second elastic member column of the rotating disk 3, so that the rear hook unlocking driving member 81 can automatically reset after the user releases the unlocking handle 4. The operation is more convenient and the function is more reliable.

[0070] Optionally, in combination with Figures 1 to 7 、 Figures 14 to 19 As shown, the rotating disk 3 is rotatably connected to the base 2. The front hook unlocking driving member 71 is provided with a front driving block 711, and the rear hook unlocking driving member 81 is provided with a rear driving block 811. The base 2 is movably connected with a first side unlocking member 10 and a second side unlocking member 20. The first side unlocking member 10 is provided with a first side dial block 101 that is hooked and connected to the front driving block 711, and the second side unlocking member 20 is provided with a second side dial block 201 that is hooked and connected to the rear driving block 811. When the unlocking handle 4 is pulled forward, the first side dial block 101 moves to drive the front driving block 711 to move leftward, and the second side dial block 201 moves to drive the rear driving block 811 to move rightward.

[0071] Among them, a cylinder is provided in the middle of the base 2, and a rotating hole is provided in the middle of the rotating disk 3. The base 2 and the rotating disk 3 are rotationally connected to each other through the cooperation of the cylinder and the rotating hole. The first side unlocking member 10 and the second side unlocking member 20 are symmetrically arranged on the left and right sides of the base 2. During the forward and backward movement of the unlocking handle 4, the first side unlocking member 10 and the second side unlocking member 20 can approach and move away from each other in the left-right direction, so as to realize the unlocking and locking of the front hook 5 and the rear hook 6 when the rotating disk 3 rotates relative to the base 2 to the 90° position. The structure is simple and reliable, and the operation is convenient.

[0072] When the rotating disk 3 rotates relative to the base 2 to the 90° position and it is necessary to unlock the chair body 1, the user first applies a force to the unlocking handle 4 to pull the unlocking handle 4 forward, so that the first side dial block 101 drives the front driving block 711 to move leftward, and at the same time, the second side dial block 201 drives the rear driving block 811 to move rightward. The movement of the rear driving block 811 drives the rear hook locking limit rod 82 to move so that the rear hook locking limit rod 82 is disengaged from the rear hook 6, and the movement of the front driving block 711 drives the front hook locking limit rod 72 to move so that the front hook locking limit rod 72 is disengaged from the front hook 5, thereby realizing the simultaneous unlocking of the front hook 5 and the rear hook 6 and completing the unlocking of the chair body 1.

[0073] Optionally, in combination with Figures 1 to 7 、 Figures 14 to 19As shown, the unlocking handle 4 is provided with a first cylinder 43 and a second cylinder 44. The first side unlocking member 10 is provided with a first side inclined slot 102 that slidably cooperates with the first cylinder 43. The second side unlocking member 20 is provided with a second side inclined slot 202 that slidably cooperates with the second cylinder 44. The base 2 is provided with a guide rail 21 for the left and right sliding of the first side unlocking member 10 and the second side unlocking member 20.

[0074] Wherein, the front end of the first side inclined slot 102 inclines to the right, such that when the unlocking handle 4 moves forward, the first side unlocking member 10 moves to the left. The front end of the second side inclined slot 202 inclines to the left, such that when the unlocking handle 4 moves forward, the second side unlocking member 20 moves to the right. Both the first side inclined slot 102 and the second side inclined slot 202 have a certain length, so that the first cylinder 43 can slide within the first side inclined slot 102 and the second cylinder 44 can slide within the second side inclined slot 202. The width of the first side inclined slot 102 is close to the outer diameter of the first cylinder 43, and the width of the second side inclined slot 202 is close to the outer diameter of the second cylinder 44, to minimize the play of the structure.

[0075] When the chair body 1 is locked, the first cylinder 43 is located at the rear end of the first side inclined slot 102, and the second cylinder 44 is located at the rear end of the second side inclined slot 202. When the unlocking handle 4 is pulled, the first side unlocking member 10 moves leftward through the cooperation with the guide rail 21 and through the cooperation between the first side inclined slot 102 and the first cylinder 43, thereby driving the front hook unlocking driving member 71 to move leftward, and finally unlocking the front hook 5. At the same time, the second side unlocking member 20 moves rightward through the cooperation with the guide rail 21 and through the cooperation between the second side inclined slot 202 and the second cylinder 44, thereby driving the rear hook unlocking driving member 81 to move rightward, and finally unlocking the rear hook 6.

[0076] In this embodiment, by providing the guide rail 21 on the base 2 and providing the first cylinder 43 and the second cylinder 44 on the unlocking handle 4, the first side unlocking member 10 and the second side unlocking member 20 can only move along the length direction of the guide rail 21 when the unlocking handle 4 moves forward for unlocking, thereby ensuring that the front hook 5 and the rear hook 6 can be smoothly unlocked when the unlocking handle 4 is pulled. The structure is simple and the operation is convenient.

[0077] Optionally, in combination with Figures 20 to 25As shown, it includes a base 2, a rotating disc 3, a release handle 4, and a dual-purpose pulling and pressing member 50. The rotating disc 3 is rotatably connected to the base 2. Both the release handle 4 and the dual-purpose pulling and pressing member 50 are movably connected to the base 2. The base 2 is movably connected to a rotating release assembly 60 that locks with the rotating disc 3. Both the rotating release assembly 60 and the release handle 4 are movably connected to the dual-purpose pulling and pressing member 50. When the dual-purpose pulling and pressing member 50 is pressed downward, the rotating release assembly 60 disengages from the rotating disc 3 to achieve the rotational unlocking of the rotating disc 3. When the dual-purpose pulling and pressing member 50 is pulled forward, the dual-purpose pulling and pressing member 50 drives the release handle 4 to move to unlock the chair body.

[0078] Among them, a chair body is detachably installed on the rotating disc 3. When the dual-purpose pulling and pressing member 50 is in the initial state, the chair body is locked with the rotating disc 3 so that the chair body is firmly installed. The rotating disc 3 is locked with the rotating release assembly 60 so that the rotating disc 3 cannot rotate relative to the base 2, that is, the chair body cannot rotate relative to the base 2. When the release handle 4 moves forward, the locking structure between the chair body and the rotating disc 3 can be unlocked, so that the chair body can be detached from the rotating disc 3. When the rotating release assembly 60 moves under the action of pressure, it can disengage from the rotating disc 3, so as to achieve the unlocking of the rotating disc 3 in the rotating direction and enable the chair body to rotate.

[0079] In this embodiment of the child safety seat with a linkage unlocking function, by setting a dual-purpose pulling and pressing member 50, and through the two actions of pressing the dual-purpose pulling and pressing member 50 and pulling the dual-purpose pulling and pressing member 50, the unlocking of the chair body rotation function and the unlocking of the chair body disassembly function are respectively realized. It not only has fewer components and lower costs, but also the unlocking operation is very convenient, and the unlocking of the two functions can be easily completed.

[0080] Optionally, in combination with Figures 20 to 25 As shown, the base 2 is provided with an oval slot 23. The dual-purpose pulling and pressing member 50 is provided with a first pin shaft 501 that is movably connected to the oval slot 23. When the dual-purpose pulling and pressing member 50 is pressed downward, the dual-purpose pulling and pressing member 50 rotates around the first pin shaft 501, and the first pin shaft 501 is rotatably connected to the oval slot 23. When the dual-purpose pulling and pressing member 50 is pulled forward, the first pin shaft 501 moves forward in the oval slot 23, and the first pin shaft 501 is slidably connected to the oval slot 23.

[0081] Among them, the kidney-shaped groove 23 has a certain length, and its length direction is consistent with the front-back movement direction of the tension-compression dual-purpose part 50, so as to realize the front-back movement of the tension-compression dual-purpose part 50 relative to the base 2; the width of the kidney-shaped groove 23 is close to the outer diameter of the first pin shaft 501, so as to facilitate the rotation of the tension-compression dual-purpose part 50 around the first pin shaft 501; through the cooperation of the first pin shaft 501 and the kidney-shaped groove 23, the rotation action of the tension-compression dual-purpose part 50 is pressed and the translation of the tension-compression dual-purpose part 50 is pulled, the structure is simple, and the action is reliable.

[0082] Optionally, in combination with Figure 21 、 Figures 23 to 25 As shown, when it is necessary to press down the tension-compression dual-purpose part 50 to realize the rotation unlocking of the rotating disc 3, the first pin shaft 501 abuts against the rear end of the kidney-shaped groove 23.

[0083] Among them, the diameters of the semi-circles at the front and rear ends of the kidney-shaped groove 23 are close to the outer diameter of the first pin shaft 501. When the tension-compression dual-purpose part 50 is pulled forward, the first pin shaft 501 will move to the front end position of the kidney-shaped groove 23. At this time, the unlocking of the chair body disassembly function can be realized; when the tension-compression dual-purpose part 50 can perform the rotation unlocking operation of the rotating disc 3, the first pin shaft 501 is designed to abut against the rear end of the kidney-shaped groove 23. On the one hand, the axis position of the tension-compression dual-purpose part 50 rotating around the first pin shaft 501 is fixed relative to the base 2 during the rotation process, and it is not easy to deviate, ensuring that the tension-compression dual-purpose part 50 can always act on the rotation unlocking assembly 60. On the other hand, when realizing the rotation unlocking function of the chair body and the disassembly unlocking function of the chair body, the position of the first pin shaft 501 in the kidney-shaped groove 23 is different, so that the unlocking of the two functions can be carried out separately, thereby preventing interference between the unlocking of the two functions.

[0084] Optionally, in combination with Figures 20 to 23 As shown, the rotation unlocking assembly 60 includes a rotation unlocking block 601 and a rotation unlocking elastic member 602. The rotation unlocking block 601 is provided with a second pin shaft 6013. The base 2 is provided with a hinge hole 22 hinged to the second pin shaft 6013. The two ends of the rotation unlocking elastic member 602 are respectively connected to the rotation unlocking block 601 and the base 2. The rotation unlocking block 601 abuts against the tension-compression dual-purpose part 50; when the tension-compression dual-purpose part 50 is not pressed down, the rotation unlocking block 601 is locked with the rotating disc 3.

[0085] Among them, the dual-purpose tension and compression member 50 is provided with a toggle lever arranged obliquely, and the toggle lever is used in cooperation with the rotary unlocking block 601; the second pin shaft 6013 is arranged at the front end of the rotary unlocking block 601, and the rear end of the rotary unlocking block 601 is locked with the rotary disk 3. The rotary unlocking elastic member 602 is a compression spring, and the upper end of the rotary unlocking elastic member 602 abuts against the lower surface of the rear end of the rotary unlocking block 601, so that when the pressing on the dual-purpose tension and compression member 50 is withdrawn, the rear end of the rotary unlocking block 601 can be firmly locked with the rotary disk 3 under the elastic force of the rotary unlocking elastic member 602; when the dual-purpose tension and compression member 50 is pressed, the dual-purpose tension and compression member 50 can push the rotary unlocking block 601 to rotate around the second pin shaft 6013, and the rear end of the rotary unlocking block 601 will be disengaged from the rotary disk 3, realizing the rotary unlocking of the rotary disk 3, and thus realizing the function of the rotation of the chair body.

[0086] Optionally, as shown in combination with Figure 20 、 Figure 22 As shown, a plurality of mounting grooves 33 are arranged at intervals on the edge of the rotary disk 3, and one of the plurality of mounting grooves 33 is inserted and locked with the rotary unlocking block 601. The arrangement of a plurality of mounting grooves 33 arranged at intervals enables the chair body to be rotatably locked at multiple positions. The locking is achieved by the insertion connection between the mounting groove 33 and the rotary unlocking block 601. The structure is simple, and when the rotary unlocking block 601 is pressed by the dual-purpose tension and compression member 50, it can smoothly disengage from the mounting groove 33, and the structure is reliable.

[0087] Optionally, as shown in combination with Figures 20 to 25 As shown, the rotary unlocking block 601 is provided with a relief groove 6012 so that when the dual-purpose tension and compression member 50 is pulled forward, the dual-purpose tension and compression member 50 is disengaged from the rotary unlocking block 601.

[0088] Among them, when the rotary unlocking block 601 is locked with the rotary disk 3, the rotary unlocking block 601 is in an inclined state with the front end lower and the rear end higher. The relief groove 6012 is opened on the upper surface of the rotary unlocking block 601. When the dual-purpose tension and compression member 50 is in the initial state, the rear end of the dual-purpose tension and compression member 50 can just contact or be close to the rear end position of the rotary unlocking block 601. In this way, when the dual-purpose tension and compression member 50 is moved forward, the dual-purpose tension and compression member 50 that was originally in contact with or close to the front end of the rotary unlocking block 601 can be disengaged from the rotary unlocking block 601 after moving forward. Therefore, when unlocking the disassembly function of the chair body, it will not interfere with the rotary unlocking block 601, ensuring the effectiveness and stability of unlocking.

[0089] Optionally, as shown in combination with Figure 23 As shown, the rotary unlocking block 601 is provided with a protrusion 6011 that abuts against the rear end of the dual-purpose tension and compression member 50. The protrusion 6011 is arranged on the upper surface of the rotary unlocking block 601 and is arranged close to the rear end of the rotary unlocking block 601 to ensure that the dual-purpose tension and compression member 50 can push the rotary unlocking block 601 to rotate around the second pin shaft 6013 and increase the rotation stroke.

[0090] Optionally, in combination with Figure 20 , Figure 21 As shown, it further includes a reset elastic member 6, and both ends of the reset elastic member 6 are respectively connected to the dual-purpose tension and compression member 50 and the base 2. The reset elastic member 6 is a compression spring, and the length direction of the reset elastic member 6 is consistent with the front-rear direction, so that after the user cancels the acting force on the dual-purpose tension and compression member 50, the dual-purpose tension and compression member 50 can automatically reset to the initial state.

[0091] Optionally, in combination with Figure 20 , Figure 25 As shown, the unlocking handle 4 is provided with an abutting platform 45, and the front end of the dual-purpose tension and compression member 50 is provided with an abutting surface 502. When the dual-purpose tension and compression member 50 is pulled forward, the abutting surface 502 abuts against the abutting platform 45.

[0092] Wherein, a groove for placing the user's finger is provided on the upper surface of the dual-purpose tension and compression member 50, so that the user can smoothly pull the dual-purpose tension and compression member 50 forward; when the dual-purpose tension and compression member 50 is in the initial state or when the dual-purpose tension and compression member 50 is pressed downward, the abutting platform 45 does not contact the abutting surface 502, preventing interference during the unlocking of the two functions. Only when the dual-purpose tension and compression member 50 is pulled forward, the abutting platform 45 contacts the abutting surface 502. Under the thrust of the abutting surface 502, the unlocking handle 4 moves forward to complete the unlocking of the function of disassembling the chair body.

[0093] Optionally, in combination with Figures 20 to 29 As shown, it includes a base 2 and a rotating disk 3 that are rotatably connected to each other. The base 2 is connected with a rotating unlocking block 601 that locks with the rotating disk 3. The rotating unlocking block 601 is provided with a second pin shaft 6013, and the base 2 is provided with a hinge hole 22 that is hingedly connected to the second pin shaft 6013. When the rotating unlocking block 601 is subjected to a downward pressure and rotates around the second pin shaft 6013, it disengages from the rotating disk 3 to realize the unlocking of the rotating disk 3.

[0094] Wherein, the second pin shaft 6013 can be a shaft, and the hinge hole 22 is a shaft hole. In addition, the second pin shaft 6013 can also be a shaft hole, and the hinge hole 22 is a shaft. The hinged connection between the rotating unlocking block 601 and the base 2 is realized through the cooperation of the shaft and the shaft hole; the second pin shaft 6013 is arranged at one end of the rotating unlocking block 601. When not subjected to a downward pressure, the other end of the rotating unlocking block 601 is locked with the rotating disk 3. When subjected to a downward pressure, the other end of the rotating unlocking block 601 disengages from the rotating disk 3 to realize the unlocking of the rotating disk 3, that is, the function of rotating the chair body is unlocked.

[0095] In this embodiment, the child safety seat with a linkage unlocking function is provided with a rotary unlocking block 601 hinged to the base 2 and locked with the rotary disk 3 through the rotary unlocking block 601. When the rotary unlocking block 601 is subjected to a downward pressure, it will disengage from the rotary disk 3 to unlock the rotary disk 3. The structure is simple, with few components and convenient operation.

[0096] Optionally, as shown in combination with Figure 27 、 Figure 28 、 Figure 29 The second pin shaft 6013 is a pin shaft, and the hinge hole 22 is a hinge hole. The pin shaft is arranged at the front end of the rotary unlocking block 601. The outer diameter of the pin shaft is similar to the inner diameter of the hinge hole, and the pin shaft can rotate freely in the hinge hole. The hinge connection between the rotary unlocking block 601 and the base 2 is realized through the cooperation of the pin shaft and the hinge hole. The structure is simple and reliable, and the assembly is convenient.

[0097] Optionally, as shown in combination with Figure 28 There is a notch 60131 on the peripheral wall of the pin shaft. The number of notches 60131 is four, and the four notches 60131 are symmetrically and evenly arranged. The setting of the notch 60131 can reduce the contact area between the pin shaft and the hinge hole, and can reduce the noise generated when the rotary unlocking block 601 rotates relative to the base 2.

[0098] Optionally, as shown in combination with Figures 20 to 29 It further includes a rotary unlocking elastic member 602. The two ends of the rotary unlocking elastic member 602 are respectively connected to the rotary unlocking block 601 and the base 2. The rotary unlocking elastic member 602 is a compression spring. The upper end of the rotary unlocking elastic member 602 abuts against the lower surface of the rear end of the rotary unlocking block 601, so that when not subjected to a downward pressure, the rear end of the rotary unlocking block 601 can be firmly locked with the rotary disk 3 under the elastic force of the rotary unlocking elastic member 602.

[0099] Optionally, as shown in combination with Figure 20 、 Figure 26 The base 2 is provided with a cylindrical column 24, and the rotary disk 3 is provided with a mounting hole 34 that cooperates with the cylindrical column 24. The mounting hole 34 is arranged at the middle position of the rotary disk 3. The inner diameter of the mounting hole 34 is similar to the outer diameter of the cylindrical column 24. When the rotary unlocking block 601 and the rotary disk 3 are disengaged from each other, the cylindrical column 24 can rotate freely in the mounting hole 34 to realize the function of the chair body being rotatable.

[0100] Optionally, as shown in combination with Figures 20 to 29As shown, the rotating disk 3 is provided with a plurality of mounting grooves 33 arranged at intervals, and one of the plurality of mounting grooves 33 is inserted and locked with the rotary unlocking block 601. By providing a plurality of mounting grooves 33 arranged at intervals, the chair body can be rotatably locked in a plurality of positions. The locking is achieved by the insertion connection between the mounting groove 33 and the rotary unlocking block 601. The structure is simple, and when the rotary unlocking block 601 is subjected to a downward pressure, it can smoothly disengage from the mounting groove 33, and the structure is reliable.

[0101] Optionally, in combination with Figures 20 to 29 As shown, the mounting groove 33 is an L-shaped groove, and the rotary unlocking block 601 is provided with a plugging portion 6014. When the rotary unlocking block 601 is locked with the rotating disk 3, the upper surface of the plugging portion 6014 is plugged and abutted with the L-shaped groove.

[0102] Among them, a part of the L-shaped groove is parallel to the rotation plane of the rotating disk 3, and the other part is perpendicular to the rotation plane of the rotating disk 3. When the rotary unlocking block 601 is locked with the rotating disk 3, the plugging portion 6014 is inserted into the L-shaped groove, and the upper surface of the plugging portion 6014 abuts and cooperates with the part of the L-shaped groove that is perpendicular to the rotation plane of the rotating disk 3. This not only ensures that the rotary unlocking block 601 can be firmly plugged into the rotating disk 3, but also enables the rotary unlocking block 601 to smoothly disengage from the mounting groove 33 of the rotating disk 3 when rotating downward, without interfering with other parts of the mounting groove 33, facilitating unlocking.

[0103] The rotary unlocking block 601 is placed between the base 2 and the rotating disk 3. A rotary unlocking elastic member 602 is provided below the rotary unlocking block 601. When the rotating disk 3 rotates to the set position, the rotary unlocking elastic member 602 pushes the rotary unlocking block 601 to automatically reset and insert into the preset mounting groove 33 on the rotating disk 3, achieving the function of rotational limit locking; when the rotary unlocking block 601 is pressed downward by an external force, the rotary unlocking block 601 will rotate downward around the base 2, and the plugging portion 6014 that is pre-inserted into the mounting groove 33 of the rotating disk 3 will automatically disengage from its limiting position, achieving the unlocking of the rotation function. When the rotating disk 3 rotates to another set position, the rotary unlocking elastic member 602 pushes the rotary unlocking block 601 to automatically reset and insert into another preset mounting groove 33 on the rotating disk 3, and the rotational limit locking function can be achieved again.

[0104] Optionally, in combination with Figure 25 As shown, it further includes a pull-press dual-purpose member 50 movably connected to the base 2. The pull-press dual-purpose member 50 is used to push the rotary unlocking block 601 to rotate downward. The pull-press dual-purpose member 50 and the base 2 are preferably hinged. The pull-press dual-purpose member 50 is provided with a tiltable toggle rod. When the user presses the pull-press dual-purpose member 50 downward, the rear end of the toggle rod will push the rear end of the rotary unlocking block 601 to rotate downward around the pin shaft, realizing the separation between the rotary unlocking block 601 and the rotating disk 3.

[0105] Optionally, in combination with Figure 25 , Figure 28 As shown, the rotating unlocking block 601 is provided with a protrusion 6011 that abuts against the rear end of the dual-purpose pulling and pressing member 50. The protrusion 6011 is arranged on the upper surface of the rotating unlocking block 601 and is arranged close to the rear end of the rotating unlocking block 601 to ensure that the dual-purpose pulling and pressing member 50 can smoothly push the rotating unlocking block 601 to rotate around the pin shaft and increase the rotation stroke.

[0106] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A child safety seat with a linkage unlocking function, characterized in that, it includes a seat body (1), a base (2), a rotating disc (3), an unlocking handle (4) and a pulling and pressing dual-purpose part (50). The rotating disc (3) is rotatably connected to the base (2). The unlocking handle (4) and the pulling and pressing dual-purpose part (50) are both movably connected to the base (2). The base (2) is also movably connected with a rotating unlocking assembly (60) that locks with the rotating disc (3). The rotating unlocking assembly (60) and the unlocking handle (4) are both movably connected to the pulling and pressing dual-purpose part (50). The seat body (1) is provided with a front locking rod (11) and a rear locking rod (12). The rotating disc (3) is movably connected with a front hook (5) for locking and cooperating with the front locking rod (11) and a rear hook (6) for locking and cooperating with the rear locking rod (12). It further includes a front hook unlocking assembly (7) for driving the front hook (5) to unlock and a rear hook unlocking assembly (8) for driving the rear hook (6) to unlock. The front hook unlocking assembly (7) and the rear hook unlocking assembly (8) are both linked to the unlocking handle (4). When the pulling and pressing dual-purpose part (50) is pulled to drive the unlocking handle (4) to unlock, the unlocking handle (4) drives the front hook unlocking assembly (7) and the rear hook unlocking assembly (8) to act simultaneously, so that the front hook unlocking assembly (7) drives the front hook (5) and the rear hook unlocking assembly (8) drives the rear hook (6) to unlock simultaneously to unlock the seat body (1).

2. The child safety seat with a linkage unlocking function according to claim 1, characterized in that, The front hook unlocking assembly (7) includes a front hook unlocking driving member (71) and a front hook locking limiting rod (72) which are connected to each other. The unlocking handle (4) is linked to the front hook unlocking driving member (71). When the front hook (5) and the front locking rod (11) are locked to each other, the front hook locking limiting rod (72) cooperates with the front hook (5) to limit the movement of the front hook (5). When the pulling and pressing dual-purpose member (50) is pulled to drive the unlocking handle (4), the front hook unlocking driving member (71) drives the front hook locking limiting rod (72) to move so that the front hook locking limiting rod (72) is disengaged from the front hook (5), realizing the unlocking of the front hook (5). The rear hook unlocking assembly (8) includes a rear hook unlocking driving member (81) and a rear hook locking limiting rod (82) which are connected to each other. The unlocking handle (4) is linked to the rear hook unlocking driving member (81). When the rear hook (6) and the rear locking rod (12) are locked to each other, the rear hook locking limiting rod (82) cooperates with the rear hook (6) to limit the movement of the rear hook (6). When the pulling and pressing dual-purpose member (50) is pulled to drive the unlocking handle (4), the rear hook unlocking driving member (81) drives the rear hook locking limiting rod (82) to move so that the rear hook locking limiting rod (82) is disengaged from the rear hook (6), realizing the unlocking of the rear hook (6).

3. The child safety seat with a linkage unlocking function according to claim 2, wherein, the front hook unlocking driving member (71) is provided with a front driving block (711), the rear hook unlocking driving member (81) is provided with a rear driving block (811), the base (2) is hingedly connected with a front hook unlocking block (9). The front hook unlocking block (9) is provided with a third pin shaft (91), an abutting block (92) and a front dial block (93) which is hooked and connected to the front side of the front driving block (711). The front dial block (93) and the abutting block (92) are respectively located on the upper and lower sides of the third pin shaft (91). The unlocking handle (4) is provided with a rear hook unlocking block (41) which is hooked and connected to the rear side of the rear driving block (811) and a slope (42) which abuts against the rear side of the abutting block (92). When the pulling and pressing dual-purpose member (50) is pulled to drive the unlocking handle (4) to move forward, the rear hook unlocking block (41) moves to drive the rear driving block (811) to move forward, and the slope (42) moves forward to drive the front hook unlocking block (9) to rotate so that the front dial block (93) flips backward to realize the front dial block (93) driving the front driving block (711) to move backward.

4. The child safety seat with a linkage unlocking function according to claim 2, wherein, The front hook unlocking assembly (7) further includes a front hook reset elastic member (73), and two ends of the front hook reset elastic member (73) are respectively connected to the front hook unlocking driving member (71) and the rotating disc (3); the rear hook unlocking assembly (8) further includes a rear hook reset elastic member (83), and two ends of the rear hook reset elastic member (83) are respectively connected to the rear hook unlocking driving member (81) and the rotating disc (3).

5. The child safety seat with a linkage unlocking function according to claim 2, wherein, the front hook unlocking driving member (71) is provided with a front driving block (711), the rear hook unlocking driving member (81) is provided with a rear driving block (811), the base (2) is movably connected with a first side unlocking member (10) and a second side unlocking member (20), the first side unlocking member (10) is provided with a first side dial block (101) which is hooked and connected with the front driving block (711), and the second side unlocking member (20) is provided with a second side dial block (201) which is hooked and connected with the rear driving block (811); when pulling the dual-purpose pulling and pressing member (50) to drive the unlocking handle (4) to move forward, the first side dial block (101) moves to drive the front driving block (711) to move leftward, and the second side dial block (201) moves to drive the rear driving block (811) to move rightward.

6. The child safety seat with a linkage unlocking function according to claim 5, wherein, the unlocking handle (4) is provided with a first cylinder (43) and a second cylinder (44), the first side unlocking member (10) is provided with a first side inclined groove (102) which is slidably matched with the first cylinder (43), the second side unlocking member (20) is provided with a second side inclined groove (202) which is slidably matched with the second cylinder (44), and the base (2) is provided with a guide rail (21) for the left-right sliding of the first side unlocking member (10) and the second side unlocking member (20).

7. The child safety seat with a linkage unlocking function according to claim 2, wherein, The front hook unlocking driving member (71) is provided with a front inclined slot (712), the rear hook unlocking driving member (81) is provided with a rear inclined slot (812), and the rotating disk (3) is provided with a front vertical slot (31) corresponding to the position of the front inclined slot (712) and a rear vertical slot (32) corresponding to the position of the rear inclined slot (812); the front hook locking limiting rod (72) penetrates through the front inclined slot (712) and the front vertical slot (31) and is slidably connected to the front inclined slot (712) and the front vertical slot (31). When the pulling and pressing dual-purpose member (50) is pulled to drive the unlocking handle (4), the front hook unlocking driving member (71) drives the front hook locking limiting rod (72) to move from one end of the front vertical slot (31) to the other end, so that the front hook locking limiting rod (72) is disengaged from the front hook (5), realizing the unlocking of the front hook (5); the rear hook locking limiting rod (82) penetrates through the rear inclined slot (812) and the rear vertical slot (32) and is slidably connected to the rear inclined slot (812) and the rear vertical slot (32). When the pulling and pressing dual-purpose member (50) is pulled to drive the unlocking handle (4), the rear hook unlocking driving member (81) drives the rear hook locking limiting rod (82) to move from one end of the rear vertical slot (32) to the other end, so that the rear hook locking limiting rod (82) is disengaged from the rear hook (6), realizing the unlocking of the rear hook (6).

8. The child safety seat with a linkage unlocking function according to claim 7, wherein, the front hook (5) is provided with a front locking groove (51) for locking and cooperating with the front locking rod (11) and a front limiting portion (52) for abutting against the front hook locking limiting rod (72), the rear hook (6) is provided with a rear locking groove (61) for locking and cooperating with the rear locking rod (12) and a rear limiting portion (62) for abutting against the rear hook locking limiting rod (82), and both the front hook (5) and the rear hook (6) are hinged to the rotating disk (3); further comprising a front hook elastic member (30) and a rear hook elastic member (40), two ends of the front hook elastic member (30) are respectively connected to the front hook (5) and the rotating disk (3), and two ends of the rear hook elastic member (40) are respectively connected to the rear hook (6) and the rotating disk (3).

9. The child safety seat with a linkage unlocking function according to claim 1, wherein, When pressing down the dual-purpose pulling and pressing member (50), the rotary unlocking assembly (60) disengages from the rotary disk (3) to achieve the rotary unlocking of the rotary disk (3); the base (2) is provided with an elongated slot (23), and the dual-purpose pulling and pressing member (50) is provided with a first pin shaft (501) movably connected to the elongated slot (23). When pressing down the dual-purpose pulling and pressing member (50), the dual-purpose pulling and pressing member (50) rotates around the first pin shaft (501), and the first pin shaft (501) is rotatably connected to the elongated slot (23); when pulling the dual-purpose pulling and pressing member (50) forward, the first pin shaft (501) moves forward in the elongated slot (23), and the first pin shaft (501) is slidably connected to the elongated slot (23); when it is necessary to press down the dual-purpose pulling and pressing member (50) to achieve the rotary unlocking of the rotary disk (3), the first pin shaft (501) abuts against the rear end of the elongated slot (23).

10. The child safety seat with a linkage unlocking function according to claim 9, characterized in that, the unlocking handle (4) is provided with an abutting platform (45), and the front end of the dual-purpose pulling and pressing member (50) is provided with an abutting surface (502). When pulling the dual-purpose pulling and pressing member (50) forward, the abutting surface (502) abuts against the abutting platform (45); further comprising a reset elastic member (6), and two ends of the reset elastic member (6) are respectively connected to the dual-purpose pulling and pressing member (50) and the base (2).

11. The child safety seat with a linkage unlocking function according to any one of claims 1-10, characterized in that, the rotary unlocking assembly (60) comprises a rotary unlocking block (601) and a rotary unlocking elastic member (602). The rotary unlocking block (601) is provided with a second pin shaft (6013), and the base (2) is provided with a hinge hole (22) hingedly connected to the second pin shaft (6013). Two ends of the rotary unlocking elastic member (602) are respectively connected to the rotary unlocking block (601) and the base (2), and the rotary unlocking block (601) abuts against the dual-purpose pulling and pressing member (50); when the dual-purpose pulling and pressing member (50) is not pressed down, the rotary unlocking block (601) is locked with the rotary disk (3); when the dual-purpose pulling and pressing member (50) is pressed down, the rotary unlocking block (601) is subjected to a downward pressure and rotates around the second pin shaft (6013) and then disengages from the rotary disk (3) to achieve the rotary unlocking of the rotary disk (3).

12. The child safety seat with a linkage unlocking function according to claim 11, characterized in that, The edge of the rotating disk (3) is provided with a plurality of mounting grooves (33) at intervals, and one of the plurality of mounting grooves (33) is selectively plugged and locked with the rotating release block (601); the rotating release block (601) is provided with a clearance groove (6012) so that the pulling and pressing dual-purpose member (50) is separated from the rotating release block (601) when the pulling and pressing dual-purpose member (50) is pulled forward; the rotating release block (601) is provided with a protrusion (6011) that abuts against the rear end of the pulling and pressing dual-purpose member (50).

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