A safety seat

Abstract

The present application relates to the technical field of child safety seats, in particular to a safety seat, which comprises a seat body, a safety belt assembly, a headrest adjusting mechanism and a plurality of gear grooves, the headrest adjusting mechanism comprises a headrest assembly, a locking device arranged on the back of the backrest part and movably connected with the headrest assembly, the safety belt assembly respectively penetrates the headrest assembly and the locking device, and the locking device can protrude into the gear groove; the safety belt assembly can drive the locking device to move towards the direction close to the gear groove when being tightened; and the locking device can be automatically reset. The locking and limiting of the locking structure one can be realized at the same time when the safety belt assembly is tightened, the height of the shoulder belt can be synchronously adjusted with the headrest adjusting mechanism, the adjusting steps of the height of the headrest assembly and the shoulder belt are simplified, the structure of the safety seat is more simple and compact, and the production and installation costs are saved. The locking and unlocking of the seat cushion part and the base are convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of child safety seats, in particular to a safety seat. BACKGROUND

[0002] In recent years, with the continuous development of child safety seat technology, more and more safety seats appear in people's production and life. In order to improve the safety and comfort of safety seats during use, the height of the headrest assembly and the height of the shoulder strap need to be adapted to the head and shoulders of the child respectively. However, the height of the existing headrest assembly and shoulder strap cannot be adjusted synchronously, and the height of the shoulder strap and the headrest assembly needs to be adjusted respectively, and then the adjusted shoulder strap and headrest assembly need to be locked respectively. Moreover, the existing headrest assembly needs to add a locking mechanism to lock and unlock the headrest assembly. The operation of the headrest assembly and the shoulder strap during adjustment is complicated, the workload is large, the structure of the locking mechanism of the headrest assembly is complex, and the production cost is high. Therefore, the defect is very obvious, and a solution needs to be provided. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a safety seat.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] A safety seat, comprising a seat body, a safety belt assembly, a headrest adjusting mechanism, a backrest part provided on the seat body, and a plurality of gear slots provided on the back surface of the backrest part. The headrest adjusting mechanism comprises a headrest assembly movably provided on the front surface of the backrest part, and a locking device movably connected with the headrest assembly on the back surface of the backrest part. The safety belt assembly penetrates the headrest assembly and the locking device respectively. The locking device can protrude into the gear slot. When the safety belt assembly is tightened, the locking device can move towards the gear slot. The locking device can automatically reset.

[0006] Further, the locking device comprises a locking structure one and a reset structure for driving the locking structure one to reset. The safety belt assembly penetrates the headrest assembly and the locking structure one respectively. The locking structure one can protrude into the gear slot. When the safety belt assembly is tightened, the locking structure one can move towards the gear slot.

[0007] Further, the locking structure one comprises a lock rod capable of protruding into the gear slot, a fixing member and a lock block one movably arranged on the back of the backrest part respectively, the fixing member is connected with the headrest assembly, the lock block one is movably arranged between the headrest assembly and the fixing member, the fixing member and the lock block one are movably connected with the lock rod respectively, the safety belt assembly penetrates through the headrest assembly and the lock block one respectively, the fixing member can limit the movement of the lock rod in the direction of approaching or moving away from the backrest part, the safety belt assembly can drive the lock rod to move relative to the fixing member in the direction of approaching or moving away from the backrest part when the safety belt assembly is tightened, and the reset structure is used to reset the lock block one and the lock rod.

[0008] Further, the lock block one is provided with a containing groove, the reset structure comprises a first elastic member arranged in the containing groove and a resisting member connected with the fixing member or the headrest assembly at one end, and the other end of the resisting member is slidably connected with the containing groove and can abut against the first elastic member.

[0009] Further, the lock block one is provided with a sliding groove one obliquely arranged, one end of the lock rod is slidably connected with the sliding groove one, and the top end of the sliding groove one is obliquely arranged in the direction of approaching the headrest assembly.

[0010] Further, the fixing member is provided with a sliding groove two, the middle part of the lock rod is slidably connected with the sliding groove two, and the length direction of the sliding groove two is perpendicular to the backrest part.

[0011] Further, the locking structure one comprises a locking member capable of protruding into the gear slot, a connecting seat movably arranged on the back of the backrest part, and a reset member connected with the connecting seat and the headrest assembly, the safety belt assembly penetrates through the headrest assembly and the connecting seat respectively, the safety belt assembly can drive the connecting seat and the locking member to move in the direction of approaching the headrest assembly when the safety belt assembly is tightened, the locking member is arranged on the side of the connecting seat close to the headrest assembly, and the reset member can reset the connecting seat and the locking member.

[0012] Further, the safety seat further comprises a seat cushion part arranged on the seat body, a base arranged below the seat cushion part and detachably connected with the seat cushion part, a locking structure two movably arranged in the seat cushion part and capable of protruding into the base, a locking driving mechanism arranged on the seat cushion part, and a driving member movably arranged in the seat cushion part and connected with the locking structure two, the locking driving mechanism drives the locking structure two to lock or unlock the seat cushion part and the base through the driving member.

[0013] Further, the locking structure two comprises a guide member arranged in the seat cushion part, a lock block two movably arranged in the seat cushion part and capable of protruding into the base, and a connecting rod connected with the lock block two and the driving member, the guide member provides guidance for the movement of the connecting rod, and the locking driving mechanism drives the lock block two to move into or out of the base through the driving member and the connecting rod.

[0014] Further, the locking driving mechanism comprises a handle movably arranged on the cushion part, a pull rope connected to the handle and the driving member, and two elastic members for driving the two locking blocks and the driving member to reset.

[0015] The application has the following advantages: the safety belt assembly and the reset structure are combined to realize the locking and resetting of the locking structure one, so that the locking and limiting of the locking structure one can be realized while the safety belt assembly is tightened; the height of the shoulder belt can be adjusted synchronously with the headrest adjusting mechanism, which simplifies the adjustment steps of the height of the headrest assembly and the shoulder belt, increases the safety during the use of the safety seat, and makes the structure of the safety seat more simple and compact, thereby saving the production and installation costs; the locking and unlocking of the cushion part and the base are convenient, and multiple locking structures two are added to lock the cushion part and the base, thereby improving the stability during the installation of the seat body; the locking driving mechanism can synchronously drive multiple locking structures two to unlock or lock the seat body and the base, and the multiple locking structures two have high synchronism and good stability during the locking and unlocking, thereby effectively improving the safety during the locking or unlocking of the seat body and the base. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The figure is a schematic view of the three-dimensional structure of the embodiment one of the application Figure 1 .

[0017] Figure 2 The figure is a schematic view of the three-dimensional structure of the embodiment one of the application Figure 2 .

[0018] Figure 3 The figure is a partial exploded view of the embodiment one of the application

[0019] Figure 4 The figure is a partial sectional view of the embodiment one of the application Figure 1 .

[0020] Figure 5 The figure is a partial schematic view of the three-dimensional structure of the embodiment one of the application

[0021] Figure 6 The figure is a partial sectional view of the embodiment one of the application Figure 2 .

[0022] Figure 7 The figure is a schematic view of the three-dimensional structure of the embodiment two of the application after the safety belt assembly is removed

[0023] Figure 8 The figure is a partial schematic view of the three-dimensional structure of the embodiment two of the application

[0024] Figure 9 The figure is a partial exploded view of the embodiment two of the application

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1. Backrest; 2. Safety belt assembly; 3. Headrest adjustment mechanism; 4. Cushion; 5. Drive member; 6. Locking structure 2; 7. Locking drive mechanism; 11. Gear slot; 21. Fixing belt; 22. Adjusting belt; 23. Shoulder belt; 24. Buckle connector; 25. Lock; 31. Headrest assembly; 32. Locking structure 1; 33. Reset mechanism; 34. Fixing member; 35. Lock block 1; 36. Lock rod; 37. Connecting seat; 3 8. Reset member; 39. Locking member; 61. Guide member; 62. Locking block 2; 63. Connecting rod; 64. Guide groove; 71. Handle; 72. Pull rope; 73. Elastic member 2; 74. Pull rod; 311. Fixing seat; 312. Through groove; 313. Guide hole; 331. Elastic member 1; 332. Interference member; 341. Avoidance groove; 342. Sliding groove 2; 351. Accommodating groove; 352. Sliding groove 1; 371. Guide column. DETAILED DESCRIPTION

[0027] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0028] Example 1.

[0029] like Figures 1 to 6 As shown, the present invention provides a safety seat, which includes a seat body, a safety belt assembly 2, a headrest adjustment mechanism 3, a backrest portion 1 arranged on the seat body and a plurality of gear slots 11 arranged on the back of the backrest portion 1, the headrest adjustment mechanism 3 includes a headrest assembly 31 movably arranged on the front of the backrest portion 1, and a locking device arranged on the back of the backrest portion 1 and movably connected to the headrest assembly 31, the safety belt assembly 2 passes through the headrest assembly 31 and the locking device respectively, and the locking device can protrude into the gear slot 11; when the safety belt assembly 2 is tightened, it can drive the locking device to move in a direction close to the gear slot 11; the locking device can automatically reset. Specifically, the locking device includes a locking structure 32 and a reset structure 33 for driving the locking structure 32 to reset. The seat belt assembly 2 passes through the headrest assembly 31 and the locking structure 32 respectively. The locking structure 32 can protrude into the gear slot 11; when the seat belt assembly 2 is tightened, it can drive the locking structure 32 to move toward the gear slot 11.

[0030] Specifically, the safety belt assembly 2 comprises a fixed belt 21, an adjusting belt 22, a shoulder belt 23 penetrating the headrest assembly 31 and a locking structure one 32 respectively, a buckle connector 24 connected to one end of the fixed belt 21 and one end of the shoulder belt 23, and a lock 25 arranged on the seat cushion part 4 of the seat body, the other end of the fixed belt 21 is connected to the seat cushion part 4 of the seat body, the other end of the shoulder belt 23 is connected to one end of the adjusting belt 22, the other end of the adjusting belt 22 penetrates the lock 25, and the lock 25 is used to lock the adjusting belt 22 or / and the shoulder belt 23. In actual use, the baby is placed in the seat body, the shoulder belt 23 is wound around the baby's shoulders, and since the height and position of the baby's head are different, the height of the headrest assembly 31 needs to be adjusted to adapt to the height of the baby's head. When adjusting, first, the lock of the adjusting belt 22 or / and the shoulder belt 23 is released through the lock 25, so that the safety belt assembly 2 is in a relaxed state, then the headrest assembly 31 and the locking structure one 32 are manually moved up and down along the backrest part 1, until the headrest assembly 31 is adjusted to the appropriate height, then the adjusting belt 22 is manually pulled to tighten the shoulder belt 23, the shoulder belt 23 drives the locking structure one 32 to move towards the gear slot 11 when tightening, the reset structure 33 is compressed and stores elastic potential energy, until the locking structure one 32 protrudes into the gear slot 11 and the shoulder belt 23 is in a taut state, then the shoulder belt 23 or / and the adjusting belt 22 is locked through the lock 25, the locking structure one 32 is locked in the gear slot 11 through the taut shoulder belt 23, so that the locking structure one 32, the headrest assembly 31 are locked relative to the backrest part 1, and the height adjustment of the headrest assembly 31 is realized. When the lock of the shoulder belt 23 or / and the adjusting belt 22 is released by the lock 25, the shoulder belt 23 is in a relaxed state, the locking structure one 32 is reset by the reset structure 33, at this time, the locking structure one 32 is in an unlocked state, facilitating the adjustment of the headrest assembly 31 again. The safety belt assembly 2 and the reset structure 33 cooperate to lock and reset the locking structure one 32, the locking and limiting of the locking structure one 32 are realized at the same time as the safety belt assembly 2 is tightened, the height of the shoulder belt 23 can be adjusted synchronously with the headrest adjusting mechanism 3, the height adjustment steps of the headrest assembly 31 and the shoulder belt 23 are simplified, the safety of the safety seat during use is increased, the structure of the safety seat is more simple and compact, and the production and installation costs are saved.

[0031] Further, the locking structure 32 comprises a lock rod 36 capable of protruding into the gear slot 11, a fixing member 34 and a lock block 35 movably arranged on the back of the backrest part 1 respectively, the fixing member 34 is connected with the headrest assembly 31, the lock block 35 is movably arranged between the headrest assembly 31 and the fixing member 34, the fixing member 34 and the lock block 35 are movably connected with the lock rod 36 respectively, the safety belt assembly 2 penetrates through the headrest assembly 31 and the lock block 35 respectively, the fixing member 34 can limit the movement of the lock rod 36 in the direction of approaching or moving away from the backrest part 1, the safety belt assembly 2 can drive the lock rod 36 to move in the direction of approaching or moving away from the backrest part 1 relative to the fixing member 34 when being tightened, and the reset structure 33 is used to reset the lock block 35 and the lock rod 36.

[0032] In actual use, the shoulder belt 23 penetrates through the headrest assembly 31 and the lock block 35 respectively, when the shoulder belt 23 is tightened by adjusting the belt 22, the shoulder belt 23 drives the lock rod 36 to move in the direction of approaching the backrest part 1 relative to the fixing member 34 through the lock block 35 until the lock rod 36 protrudes into the gear slot 11, the belt 22 is locked by the lock buckle 25, and the headrest assembly 31 and the headrest adjusting mechanism 3 are locked by the cooperation of the tightened shoulder belt 23 and the gear slot 11. The lock block 35 can slide relative to the fixing member 34 or / and the headrest assembly 31, the fixing member 34 and the lock block 35 can limit and guide the sliding direction of the lock block 35 and the lock rod 36 respectively, which improves the accuracy of the movement of the lock rod 36 and the hand feeling and experience of the headrest adjusting mechanism 3 during adjustment.

[0033] Further, the lock block 35 is provided with a receiving groove 351 penetrating through from front to back, and the reset structure 33 comprises an elastic member 331 arranged in the receiving groove 351 and a contact member 332 connected with the fixing member 34 or the headrest assembly 31 at one end, the other end of the contact member 332 is slidably connected with the receiving groove 351 and can abut against the elastic member 331.

[0034] Specifically, one end of the abutting piece 332 is connected with the fixing piece 34, and the other end of the abutting piece 332 is connected with the headrest assembly 31 after penetrating through the connecting accommodation groove 351, the abutting piece 332 abuts against the bottom end of the elastic piece one 331, and the elastic piece one 331 can adopt a spring; the fixing piece 34 is provided with an avoiding groove 341, the shoulder strap 23 penetrates through the headrest assembly 31, the locking block one 35 and the avoiding groove 341 respectively, and the shoulder strap 23 is slidingly arranged in the avoiding groove 341. In actual use, the shoulder strap 23 drives the locking block one 35 to move downward relative to the fixing piece 34, and the elastic piece one 331 between the accommodation groove 351 and the abutting piece 332 is compressed, the locking block one 35 drives the locking rod 36 to move in the direction close to the gear groove 11 until the locking rod 36 protrudes into the gear groove 11. In actual installation, the top end of the fixing piece 34 can be connected with the headrest assembly 31 through a locking piece (screw, screw, etc.), the abutting piece 332 is located at the bottom end of the fixing piece 34, the abutting piece 332 penetrates through the accommodation groove 351 and connects the headrest assembly 31 and the fixing piece 34, thereby realizing the stable connection between the bottom end of the fixing piece 34 and the headrest assembly 31, and the abutting piece 332 can also cooperate with the elastic piece one 331 to drive the locking block one 35 and the locking rod 36 to reset. The headrest adjusting mechanism 3 has the advantages of simple structure, compactness and strong practicability.

[0035] Further, the locking block one 35 is provided with a sliding groove one 352 which is inclined, and one end of the locking rod 36 is slidingly connected with the sliding groove one 352, and the top end of the sliding groove one 352 is inclined toward the headrest assembly 31.

[0036] Specifically, the fixing piece 34 is provided with a sliding groove two 342, and the middle part of the locking rod 36 is slidingly connected with the sliding groove two 342, and the length direction of the sliding groove two 342 is perpendicular to the backrest part 1. In actual use, the shoulder strap 23 drives the locking block one 35 to slide downward along the fixing piece 34, the locking block one 35 drives the locking rod 36 to slide in the direction close to the backrest part 1 after being guided through the sliding groove one 352 and the sliding groove two 342, until the locking rod 36 slides into the gear groove 11, and the sliding precision and stability of the locking rod 36 in the sliding groove one 352 are high, thereby improving the smoothness of the locking rod 36 in the locking and unlocking process.

[0037] Further, the safety seat further comprises a cushion part 4 arranged on the seat body, a base arranged below the cushion part 4 and detachably connected with the cushion part 4, a locking structure two 6 movably arranged in the cushion part 4 and capable of protruding into the base, a locking driving mechanism 7 arranged on the cushion part 4, and a driving piece 5 movably arranged in the cushion part 4 and connected with the locking structure two 6, the locking driving mechanism 7 drives the locking structure two 6 to lock or unlock the cushion part 4 and the base through the driving piece 5.

[0038] Specifically, the locking structures 2 6 are multiple in number, each of which is connected to a driver 5 rotatably disposed within the seat cushion 4 . During actual use, when the locking structures 2 6 protrude into the base, the base and seat cushion 4 are locked. When the base and seat cushion 4 need to be unlocked, the locking drive mechanism 7 drives the driver 5 to rotate within the seat cushion 4 . During rotation, the driver 5 simultaneously pulls the multiple locking structures 2 6 , causing the multiple locking structures 2 6 to simultaneously move out of the base and into the seat cushion 4 , thereby releasing the lock between the seat cushion 4 and the base. The present invention has a simple structure and conveniently locks and unlocks the seat cushion 4 and the base. The addition of multiple locking structures 2 6 to cooperate in locking the seat cushion 4 and the base improves the stability of the seat body during installation. The locking drive mechanism 7 can simultaneously drive the multiple locking structures 2 6 to unlock or lock the seat body and the base. The multiple locking structures 2 6 cooperate to lock and unlock with high synchronization and stability, effectively improving the safety of the seat body and the base when locking or unlocking.

[0039] Furthermore, the locking structure 2 6 includes a guide member 61 arranged in the cushion portion 4, a locking block 2 62 movably arranged in the cushion portion 4 and capable of protruding into the base, and a connecting rod 63 connected to the locking block 2 62 and the driving member 5, and the guide member 61 provides guidance for the movement of the connecting rod 63; the locking drive mechanism 7 drives the locking block 2 62 to move in or out of the base via the driving member 5 and the connecting rod 63, and the guide member 61 is hinged to the driving member 5.

[0040] Specifically, the guide member 61 is provided with a guide groove 64, and the connecting rod 63 is slidably connected to the guide groove 64. The guide groove 64 provides guidance for the movement of the connecting rod 63 in a direction perpendicular to the seat cushion 4. In actual use, when the locking drive mechanism 7 drives the driving member 5 to rotate, the driving member 5 pulls the multiple locking blocks 62 into the seat cushion 4 through the multiple connecting rods 63. The guide groove 64 guides the direction in which the connecting rod 63 pulls the locking blocks 62, so that the multiple locking blocks 62 move vertically and synchronously toward the base, facilitating the smooth and rapid movement of the multiple locking blocks 62 into the seat cushion 4, thereby improving the synchronization of the movement of the multiple locking blocks 62.

[0041] Furthermore, the locking drive mechanism 7 includes a handle 71 movably provided on the cushion portion 4 , a pull rope 72 connected to the handle 71 and the drive member 5 , and an elastic member 73 for driving the second locking block 62 and the drive member 5 to reset.

[0042] Specifically, the elastic members 73 and the guide members 61 are both in plurality, and the plurality of elastic members 73 and the plurality of guide members 61 are respectively arranged in one-to-one correspondence with the plurality of lock blocks 62; the elastic members 73 can be springs, and the elastic members 73 are sleeved on the connecting rods 63 and respectively abut against the lock blocks 62 and the guide members 61. In actual use, by manually bending the handle 71, the handle 71 rotates relative to the cushion part 4, and the driving member 5 is pulled to rotate by the pull rope 72, the driving member 5 drives the plurality of locking structures 6 to unlock the cushion part 4 and the base, the lock blocks 62 move into the cushion part 4, and the elastic members 73 are compressed and store elastic potential energy; after the cushion part 4 is detached from the base, the position limitation of the handle 71 is cancelled, the lock blocks 62 and the driving member 5 are automatically reset by the elastic members 73 respectively, and the driving member 5 drives the pull rope 72 and the handle 71 to reset. The locking and driving mechanism 7 is simple in structure and convenient to reset.

[0043] Further, the locking and driving mechanism 7 further comprises a pull rod 74 arranged on the driving member 5 and protruding out of the driving member 5, and the driving member 5 is connected with the pull rope 72 through the pull rod 74.

[0044] In actual use, one end of the pull rod 74 protrudes out of the driving member 5 and is connected with the pull rope 72, which increases the force arm when the pull rope 72 drives the driving member 5 to rotate, and it is more labor-saving when the pull rope 72 drives the driving member 5 to rotate.

[0045] Further, the projection view of the driving member 5 is a polygon, and a plurality of vertices of the driving member 5 can respectively abut against a plurality of guide members 61.

[0046] Specifically, the plurality of vertices of the driving member 5 are respectively arranged at intervals from the plurality of guide members 61. When the driving member 5 drives the lock blocks 62 to completely move into the cushion part 4, one vertex of the driving member 5 abuts against an adjacent guide member 61, which avoids the lock blocks 62 from moving too much into the cushion part 4, and improves the position accuracy when the lock blocks 62 move into the cushion part 4; when the elastic members 73 drive the lock blocks 62 and the driving member 5 to reset, one vertex of the driving member 5 abuts against another adjacent guide member 61, which improves the stability and accuracy when the lock blocks 62 reset.

[0047] Embodiment two.

[0048] As Figure 7 and 9The difference between the embodiment and the embodiment one is that the locking structure 32 comprises a locking member 39 capable of protruding into the gear slot 11, a connecting seat 37 movably arranged on the back of the backrest part 1, and a reset member 38 connected to the connecting seat 37 and the headrest assembly 31, the safety belt assembly 2 penetrates the headrest assembly 31 and the connecting seat 37 respectively, the safety belt assembly 2 can drive the connecting seat 37 and the locking member 39 to move towards the headrest assembly 31 when being tightened, and the locking member 39 is arranged on the side of the connecting seat 37 close to the headrest assembly 31; the reset member 38 can drive the connecting seat 37 and the locking member 39 to reset.

[0049] Specifically, the headrest assembly 31 comprises a headrest assembly body and a fixing seat 311 movably arranged on the back of the backrest part 1 and connected to the headrest assembly body, the fixing seat 311 is provided with a through slot 312 capable of communicating with the gear slot 11, the locking member 39 can penetrate the through slot 312 and protrude into the gear slot 11, the reset member 38 is connected to the fixing seat 311 and the connecting seat 37 respectively, and the reset member 38 can be an elastic member such as a spring; the safety belt assembly 2 penetrates the connecting seat 37, the fixing seat 311 and the headrest assembly body respectively. In actual use, after the headrest assembly body, the fixing seat 311 and the connecting seat 37 are manually adjusted to a suitable position, the safety belt assembly 2 is tightened, the safety belt assembly 2 drives the connecting seat 37 and the locking member 39 to move relative to the fixing seat 311 towards the backrest part 1, the locking member 39 protrudes into the gear slot 11 after penetrating the through slot 312, at this time, the reset member 38 is compressed and stores elastic potential energy, the locking member 39, the connecting seat 37 and the reset member 38 are locked in the gear slot 11 through the tightened safety belt assembly 2, when the safety belt assembly 2 is in a relaxed state and releases the locking of the locking member 39 and the connecting seat 37, the reset member 38 drives the connecting seat 37 and the locking member 39 to move relative to the fixing seat 311 away from the backrest part 1, so that the locking member 39 moves out of the gear slot 11, so that the locking device is in an unlocked state, and the headrest assembly 31 is adjusted again.

[0050] Specifically, the connecting seat 37 is provided with a guide column 371, the fixing seat 311 is provided with a guide hole 313, the guide column 371 and the guide hole 313 are in sliding connection, and the number of the guide column 371 and the guide hole 313 is multiple. The guide column 371 not only reduces the gravity of the fixing seat 311 borne by the reset member 38, but also improves the service life of the reset member 38; and the position accuracy of the connecting seat 37 relative to the fixing seat 311 is improved when the connecting seat 37 moves, so that the locking device is more smooth when being locked.

[0051] The rest of the structure of the embodiment is the same as that of the embodiment one, and the same structure can adopt the analysis of the embodiment one, which will not be described here.

[0052] All the technical features in the embodiments can be freely combined according to actual needs.

[0053] The above embodiments are the preferred implementation of the present application, in addition to this, the present application can be implemented in other ways, without departing from the technical scheme concept, any obvious replacement within the protection scope of the present application.

Claims

1. A safety seat, characterized by: The application relates to a seat body, a safety belt assembly (2), a headrest adjusting mechanism (3), a backrest part (1) arranged on the seat body and a plurality of gear grooves (11) arranged on the back of the backrest part (1), wherein the headrest adjusting mechanism (3) comprises a headrest assembly (31) movably arranged on the front of the backrest part (1) and a locking device movably arranged on the back of the backrest part (1) and movably connected with the headrest assembly (31), the safety belt assembly (2) penetrates through the headrest assembly (31) and the locking device, the locking device can protrude into the gear groove (11), the safety belt assembly (2) can drive the locking device to move towards the gear groove (11) when being tightened, the locking device can be automatically reset, the locking device comprises a locking structure (32) and a reset structure (33) for driving the locking structure (32) to reset, the safety belt assembly (2) penetrates through the headrest assembly (31) and the locking structure (32), the locking structure (32) can protrude into the gear groove (11), the safety belt assembly (2) can drive the locking structure (32) to move towards the gear groove (11) when being tightened, the locking structure (32) comprises a locking rod (36) which can protrude into the gear groove (11), a fixing member (34) and a locking block (35) movably arranged on the back of the backrest part (1), the fixing member (34) is connected with the headrest assembly (31), the locking block (35) is movably arranged between the headrest assembly (31) and the fixing member (34), the fixing member (34) and the locking block (35) are movably connected with the locking rod (36), the safety belt assembly (2) penetrates through the headrest assembly (31) and the locking block (35), the fixing member (34) can limit the locking rod (36) to move towards or away from the backrest part (1), the safety belt assembly (2) can drive the locking rod (36) to move towards or away from the backrest part (1) relative to the fixing member (34) through the locking block (35) when being tightened, the reset structure (33) is used for driving the locking block (35) and the locking rod (36) to reset, an inclined sliding groove (352) is arranged on the locking block (35), one end of the locking rod (36) is slidably connected with the sliding groove (352), the top end of the sliding groove (352) is inclined towards the headrest assembly (31), and a containing groove (351) is arranged on the locking block (35) in a front-to-back penetrating mode.

2. A safety seat according to claim 1, wherein: The reset structure (33) comprises an elastic member (331) arranged in the containing groove (351) and a contact member (332) connected with the fixing member (34) or the headrest assembly (31) at one end, the other end of the contact member (332) is slidably connected with the containing groove (351) and can be in contact with the elastic member (331).

3. A safety seat according to claim 1, wherein: A sliding groove (342) is arranged on the fixing member (34), the middle part of the locking rod (36) is slidably connected with the sliding groove (342), and the length direction of the sliding groove (342) is perpendicular to the backrest part (1).

4. A safety seat according to any one of claims 1 to 3, wherein: The safety seat further comprises a cushion part (4) arranged on the seat body, a base arranged below the cushion part (4) and detachably connected with the cushion part (4), a locking structure two (6) movably arranged in the cushion part (4) and capable of protruding into the base, a locking driving mechanism (7) arranged on the cushion part (4), and a driving member (5) movably arranged in the cushion part (4) and connected with the locking structure two (6), wherein the locking driving mechanism (7) drives the locking structure two (6) to lock or unlock the cushion part (4) and the base through the driving member (5).

5. A safety seat according to claim 4, wherein: The locking structure two (6) comprises a guide (61) arranged in the cushion part (4), a locking block two (62) movably arranged in the cushion part (4) and capable of protruding into the base, and a connecting rod (63) connected with the locking block two (62) and the driving member (5), wherein the guide (61) provides a guide for the movement of the connecting rod (63); and the locking driving mechanism (7) drives the locking block two (62) to move into or out of the base through the driving member (5) and the connecting rod (63).

6. A safety seat according to claim 5, wherein: The locking driving mechanism (7) comprises a handle (71) movably arranged on the cushion part (4), a pull rope (72) connected with the handle (71) and the driving member (5), and an elastic member two (73) for resetting the locking block two (62) and the driving member (5).

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