Child safety seat

Abstract

This invention discloses a child safety seat. The child safety seat has a telescopic rod with an extended locking position (extending the fixed rod) and a retracted locking position (retracting the fixed rod). When the telescopic rod is in the extended locking position, the pull-out housing is in the extended position; when the telescopic rod is in the retracted locking position, the pull-out housing is in a first receiving position. A support leg structure rotatably connected to one end of the pull-out housing is configured to, during rotation, drive a locking component to unlock the telescopic rod to one of the extended or retracted locking positions. This allows an external force applied to the pull-out housing to move the pull-out housing and the support leg structure synchronously along a first direction, and also to move the telescopic rod and the locking component synchronously along the first direction to the other of the extended or retracted locking positions. This allows the telescopic mechanism to be simultaneously stored while the support leg structure is being stored, simplifying the operation, improving ease of use, and enhancing the user experience.

Description

Technical Field

[0001] This invention relates to the field of children's products and equipment, and more particularly to child safety seats. Background Technology

[0002] To meet the travel needs of parents and children, infant car seats are typically installed as part of strollers or as part of child safety seats. Regarding child safety seats, as people's demands for vehicle safety continue to increase, the requirements for the stability and safety of child safety seats are also constantly rising.

[0003] Currently, to improve the stability and safety of child safety seats, a support leg structure is typically installed at the bottom of the seat. This support leg structure is rotatably connected to the bottom of the child safety seat, and its height can be adjusted, effectively enhancing the stability and safety of the child safety seat. However, existing technologies usually use a button or handle to unlock the support leg structure and the base when retracting the support leg, resulting in complicated operation and poor usability. Summary of the Invention

[0004] The purpose of this invention is to provide a child safety seat that solves the problem in the prior art where, when folding the support leg, a button or handle structure is required to unlock the relative position of the support leg structure and the base before the support leg structure can be folded into the bottom of the base, resulting in complicated operation and poor performance.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A child safety seat includes a base structure, the base structure including a base body and a support adjustment mechanism disposed on the base body, the support adjustment mechanism including a pull-out shell, a support leg structure and a telescopic mechanism;

[0007] The pull-out shell is slidably disposed on the base shell of the base body along the first direction. The pull-out shell is configured to have an extension position extending out of the base shell along the first direction and a first receiving position receiving into the base shell along the first direction under the action of external force.

[0008] One end of the support leg structure is rotatably connected to the pull-out shell. The support leg structure is configured to have a support position that is perpendicular to the base body under the action of external force, and a second receiving position that is received at the bottom of the base shell.

[0009] The telescopic mechanism includes a telescopic rod, a fixed rod fixedly disposed within the base housing, and a locking assembly disposed on the telescopic rod. The telescopic rod is slidable relative to the fixed rod along the first direction and has an extended locking position extending out of the fixed rod and a retracted locking position retracting into the fixed rod. When the telescopic rod is in the extended locking position, the pull-out shell is in the extended position. When the telescopic rod is in the retracted locking position, the pull-out shell is in the first receiving position.

[0010] The support leg structure is rotatably connected to one end of the pull-out shell and is configured such that, during rotation, it can drive the locking component to unlock the telescopic rod to one of the extended locking position and the retracted locking position, and can lock the telescopic rod to the other of the extended locking position and the retracted locking position;

[0011] When the telescopic rod is unlocked to one of the extended locking position and the retracted locking position, the external force applied to the pull-out shell can drive the pull-out shell and the support leg structure to move synchronously along the first direction, and can also drive the telescopic rod and the locking assembly to move synchronously along the first direction to the other of the extended locking position and the retracted locking position.

[0012] As a preferred technical solution of the above-mentioned child safety seat, the fixing rod is provided with a first elongated sliding hole, and an extended locking elongated hole and a retracted locking elongated hole respectively distributed at both ends of the first elongated sliding hole and both communicating with the first elongated sliding hole. The telescopic rod is provided with an elongated guide hole. The length directions of the extended locking elongated hole, the retracted locking elongated hole and the elongated guide hole are all parallel, and the length direction of the elongated guide hole is perpendicular to the first direction. The length direction of the first elongated sliding hole is parallel to the first direction.

[0013] The locking assembly includes a drive rod, a locking pin, and an elastic positioning assembly. One end of the elastic positioning assembly abuts against the drive rod and forms a guide channel with the drive rod, while the other end is elastically connected to the telescopic rod. The locking pin passes through one of the extended locking elongated hole, the first elongated sliding hole, and the retracted locking elongated hole, and also passes through the elongated guide hole and the guide channel. The guide channel and the elongated guide hole can guide the locking pin to move along the length direction of the extended locking elongated hole. The support leg structure is rotatably connected to one end of the pull-out shell, which can drive the drive rod to reciprocate along the first direction, so that the drive rod can drive the locking pin to move along the length direction of the extended locking elongated hole.

[0014] As a preferred technical solution of the above-mentioned child safety seat, one end of the drive rod is provided with a first guide surface and a first abutment portion, the elastic positioning component includes a positioning member and an elastic member, one end of the positioning member is provided with a second guide surface and a second abutment portion, the first abutment portion abuts against the second abutment portion, and the first abutment portion, the first guide surface, the second abutment portion and the second guide surface form the guide channel;

[0015] The two ends of the elastic element are respectively pressed against the other end of the positioning element and the telescopic rod.

[0016] As a preferred technical solution for the aforementioned child safety seat, the angle between the guiding direction of the guide channel and the direction from one end of the drive rod near the elastic positioning component to the other end is an acute angle.

[0017] As a preferred technical solution for the aforementioned child safety seat, the drive rod is further provided with a clearance channel that is adjacent to and connected to the guide channel along a first direction, the clearance channel being used to accommodate the locking pin.

[0018] As a preferred technical solution of the above-mentioned child safety seat, the other end of the drive rod is fixedly provided with a push rod, and the telescopic rod is provided with a second long sliding hole, the length direction of the second long sliding hole being parallel to the first direction;

[0019] The support adjustment mechanism further includes a cam structure, which includes a cam portion and a first connecting portion connected together. The pull-out shell is provided with a rotating shaft, and the cam portion is rotatably connected to the rotating shaft. The push rod passes through the second elongated sliding hole and abuts against the outer peripheral surface of the cam portion. The first connecting portion is connected to the support shell of the support leg structure. The cam portion can drive the push rod to reciprocate along the first direction in the second elongated sliding hole.

[0020] As a preferred technical solution of the above-mentioned child safety seat, the cam portion includes a protruding portion and two recessed portions. Along the circumference of the cam portion, the protruding portion is distributed between the two recessed portions and smoothly transitions with the two recessed portions.

[0021] Along the first direction, the push rod can be partially inserted into one of the recesses and abut against the inner circumferential surface of the recess, and the push rod can abut against the outer circumferential surface of the protrusion.

[0022] As a preferred technical solution for the aforementioned child safety seat, the support adjustment mechanism further includes a pusher, which includes a pusher portion and a second connecting portion connected to the pusher portion. The pull-out shell is provided with a pivot, the pusher portion is connected to one end of the telescopic rod near the pusher along the first direction, and the second connecting portion is fixedly connected to the pivot.

[0023] As a preferred technical solution for the aforementioned child safety seat, a limiting post is provided inside the base shell, and when the pull-out shell is in the first receiving position, the pull-out shell abuts against the limiting post.

[0024] As a preferred technical solution for the aforementioned child safety seat, the number of telescopic mechanisms is two, and the two telescopic mechanisms are distributed at intervals on both sides of the support leg structure along the second direction. The first direction is perpendicular to the second direction and both are parallel to the bottom plane of the base shell.

[0025] The beneficial effects of this invention are:

[0026] The purpose of this invention is to provide a child safety seat, which includes a base structure, a base body and a support adjustment mechanism disposed on the base body, and the support adjustment mechanism includes a pull-out shell, a support leg structure and a telescopic mechanism.

[0027] When the support leg structure is not needed to support the base structure, an external force is applied to the support leg structure, causing it to rotate a certain angle in the first clockwise direction. This causes the end of the support leg structure rotatably connected to the pull-out shell to unlock the telescopic rod to the extended locking position via the locking component. At this time, a force is applied to the pull-out shell in the first sub-direction, causing the pull-out shell and the support leg structure to move synchronously towards the base shell in the first sub-direction, and also causing the telescopic rod and the locking component to move synchronously in the first sub-direction until the telescopic rod is moved to the retracted locking position. At this time, the pull-out shell is moved to the first receiving position. Then, an external force is applied to the support leg structure, causing it to continue rotating a certain angle in the first clockwise direction until the support leg structure is rotated to the second receiving position. During this process, the end of the support leg structure rotatably connected to the pull-out shell causes the locking component to lock the telescopic rod in the retracted locking position.

[0028] When the support leg structure needs to support the base structure, an external force is applied to the support leg structure, causing it to rotate a certain angle in the second clockwise direction. This causes the end of the support leg structure rotatably connected to the pull-out shell to unlock the telescopic rod to the retracted locking position via a locking component. At this time, a force is applied to the pull-out shell in the second sub-direction, causing the pull-out shell and the support leg structure to move synchronously in the second sub-direction away from the base shell, and also causing the telescopic rod and locking component to move synchronously in the second sub-direction until the telescopic rod is moved to the extended locking position. At this time, the pull-out shell is moved to the extended position. An external force is then applied to the support leg structure, causing it to continue rotating a certain angle in the second clockwise direction until it rotates to a support position perpendicular to the base body. During this process, the end of the support leg structure rotatably connected to the pull-out shell causes the locking component to lock the telescopic rod to the extended locking position, allowing the support leg structure to effectively support the base structure. During this process, the telescopic mechanism extends in the second sub-direction, causing the pull-out shell to extend out of the base shell in the second sub-direction and lock in the extended position, thereby further improving the support effect of the base structure. Among them, the first clockwise direction and the second clockwise direction are opposite clockwise directions, the first sub-direction and the second sub-direction are parallel and opposite, and both are parallel to the first direction.

[0029] Therefore, this child safety seat can directly unlock the telescopic rod to the extended locking position and lock it to the retracted locking position during the process of rotating the support leg structure from the supporting position to the second receiving position; and can also directly lock the telescopic rod to the extended locking position during the process of rotating the support leg structure from the second receiving position to the supporting position. Compared with existing technologies, this effectively simplifies the operation steps, improves the ease of operation, and enhances the user experience. Attached Figure Description

[0030] Figure 1 This is a structural diagram of a child safety seat with the telescopic rod in the extended and locked position, provided in a specific embodiment of the present invention;

[0031] Figure 2 This is a structural diagram of a child safety seat with the telescopic rod in the retracted and locked position, provided in a specific embodiment of the present invention;

[0032] Figure 3 This is a cross-sectional view of the base structure of a child safety seat when the telescopic rod is in the extended and locked position, according to a specific embodiment of the present invention;

[0033] Figure 4 This is a partial structural diagram of the support and adjustment mechanism of a child safety seat provided in a specific embodiment of the present invention. Figure 1 ;

[0034] Figure 5 This is a partial cross-sectional view of the support adjustment mechanism of a child safety seat provided in a specific embodiment of the present invention;

[0035] Figure 6 yes Figure 5 A partial view at point A;

[0036] Figure 7 This is a partially exploded view of the support adjustment mechanism of a child safety seat provided in a specific embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the fixing rod of a child safety seat provided in a specific embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the telescopic rod of a child safety seat provided in a specific embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the drive rod of a child safety seat provided in a specific embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of the positioning component of a child safety seat provided in a specific embodiment of the present invention;

[0041] Figure 12 This is a partial structural diagram of the support and adjustment mechanism of a child safety seat provided in a specific embodiment of the present invention. Figure 2 .

[0042] In the picture:

[0043] 1. Base body; 11. Base shell; 111. Limiting post; 112. Receiving groove; 12. Elastic buckle;

[0044] 2. Pull-out case;

[0045] 3. Support leg structure; 31. Support housing; 311. Second torsion spring; 32. Support leg; 321. Locking groove; 33. Locking element;

[0046] 4. Telescopic mechanism;

[0047] 41. Telescopic rod; 411. Long guide hole; 412. Second long sliding hole; 413. Positioning pin;

[0048] 42. Fixing rod; 421. First elongated sliding hole; 422. Extended locking elongated hole; 423. Retracted locking elongated hole; 424. Third elongated sliding hole;

[0049] 43. Locking assembly; 431. Drive rod; 4311. First guide surface; 4312. First abutment part; 4313. Clearance channel; 4314. Push rod; 432. Locking pin; 433. Guide channel; 434. Positioning element; 4341. Second guide surface; 4342. Second abutment part; 435. Elastic element;

[0050] 5. Cam structure; 51. Cam part; 511. Protrusion; 512. Recess; 52. First connecting part;

[0051] 6. Pushing component; 61. Pushing part; 62. Second connecting part;

[0052] 7. Shaft;

[0053] 8. First torsion spring; 81. Second free end;

[0054] 9. Protective cover;

[0055] 10. Safety basket body. Detailed Implementation

[0056] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0057] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0060] Currently, to improve the stability and safety of child safety seats, a support leg structure is typically installed at the bottom of the seat. This support leg structure is rotatably connected to the bottom of the child safety seat, and its height can be adjusted, effectively enhancing the stability and safety of the child safety seat. However, existing technologies usually use a button or handle to unlock the support leg structure and the base when retracting the support leg, resulting in complicated operation and poor usability.

[0061] Therefore, this invention provides a child safety seat, such as Figure 1-9As shown, the child safety seat includes a base structure, which includes a base body 1 and a support adjustment mechanism disposed on the base body 1. The support adjustment mechanism includes a pull-out shell 2, a support leg structure 3, and a telescopic mechanism 4. The pull-out shell 2 is slidably disposed on the base shell 11 of the base body 1 along a first direction. The pull-out shell 2 is configured to have an extended position extending out of the base shell 11 along the first direction and a first receiving position received within the base shell 11 along the first direction under the action of an external force. One end of the support leg structure 3 is rotatably connected to the pull-out shell 2. The support leg structure 3 is configured to have a support position perpendicular to the base body 1 and a second receiving position received at the bottom of the base shell 11 under the action of an external force. The telescopic mechanism 4 includes a telescopic rod 41, a fixed rod 42 fixedly disposed within the base shell 11, and a locking assembly 43 disposed on the telescopic rod 41. The telescopic rod 41 can move relative to the fixed rod 42 along the first direction. The sliding mechanism has an extended locking position for extending the fixed rod 42 and a retracted locking position for retracting the fixed rod 42. When the telescopic rod 41 is in the extended locking position, the pull-out shell 2 is in the extended position. When the telescopic rod 41 is in the retracted locking position, the pull-out shell 2 is in the first receiving position. The support leg structure 3 is rotatably connected to one end of the pull-out shell 2 and is configured to drive the locking assembly 43 to unlock the telescopic rod 41 to one of the extended locking position and the retracted locking position during rotation, and to lock the telescopic rod 41 to the other of the extended locking position and the retracted locking position. When the telescopic rod 41 is unlocked to one of the extended locking position and the retracted locking position, the external force applied to the pull-out shell 2 can drive the pull-out shell 2 and the support leg structure 3 to move synchronously along the first direction, and can drive the telescopic rod 41 and the locking assembly 43 to move synchronously along the first direction to the other of the extended locking position and the retracted locking position.

[0062] When the support leg structure 3 is not needed to support the base structure, an external force is applied to the support leg structure 3 to rotate it a certain angle in the first clockwise direction. This causes the end of the support leg structure 3 connected to the pull-out shell 2 to unlock the telescopic rod 41 to the extended locking position via the locking component 43. At this time, a force is applied to the pull-out shell 2 in the first sub-direction, causing the pull-out shell 2 and the support leg structure 3 to move synchronously towards the base shell 11 in the first sub-direction. This also causes the telescopic rod 41 and the locking component 43 to move synchronously in the first sub-direction until the telescopic rod 41 is moved to the retracted locking position. At this time, the pull-out shell 2 is moved to the first receiving position. Then, an external force is applied to the support leg structure 3 to continue rotating it a certain angle in the first clockwise direction until the support leg structure 3 is rotated to the second receiving position. During this process, the end of the support leg structure 3 connected to the pull-out shell 2 causes the locking component 43 to lock the telescopic rod 41 in the retracted locking position.

[0063] When the support leg structure 3 needs to support the base structure, an external force is applied to the support leg structure 3 to rotate it a certain angle in the second clockwise direction. This causes the support leg structure 3 to rotate and connect to the end of the pull-out shell 2, which in turn causes the locking component 43 to unlock the telescopic rod 41 to the retracted locking position. At this time, a force is applied to the pull-out shell 2 in the second sub-direction, causing the pull-out shell 2 and the support leg structure 3 to move synchronously in the second sub-direction away from the base shell 11. This also causes the telescopic rod 41 and the locking component 43 to move synchronously in the second sub-direction until the telescopic rod 41 is moved to the extended locking position. At this time, the pull-out shell 2 is moved... Move to the extended position; then apply external force to the support leg structure 3 to drive the support leg structure 3 to continue rotating at a certain angle in the second clockwise direction until the support leg structure 3 is rotated to a support position that is perpendicular to the base body 1. During this process, the end of the support leg structure 3 that is rotatably connected to the pull-out shell 2 drives the locking component 43 to lock the telescopic rod 41 in the extended locking position, so that the support leg structure 3 can support the base structure well. During this process, the telescopic mechanism 4 extends along the second sub-direction, so that the pull-out shell 2 extends out of the base shell 11 along the second sub-direction and is locked in the extended position, thereby further improving the support effect of the base structure.

[0064] Therefore, this child safety seat can directly unlock the telescopic rod 41 to the extended locking position and lock it to the retracted locking position during the process of rotating the support leg structure 3 from the supporting position to the second receiving position; and can also directly lock the telescopic rod 41 to the extended locking position during the process of rotating the support leg structure 3 from the second receiving position to the supporting position. Compared with the prior art, this effectively simplifies the operation steps, improves the ease of operation, and enhances the user experience.

[0065] Wherein, the first clockwise direction and the second clockwise direction are opposite clockwise directions. It can be understood that, in this embodiment, as... Figure 1-3 As shown, the support leg rotates 90° around the central axis of the pivot 7.

[0066] The first sub-direction and the second sub-direction are parallel and opposite, and both are parallel to the first direction. Specifically, as follows: Figure 3 As shown, the first sub-direction is the ab direction; the second sub-direction is the ba direction.

[0067] Among them, such as Figure 1-10As shown, the fixed rod 42 is provided with a first elongated sliding hole 421, and an extended locking elongated hole 422 and a retracted locking elongated hole 423 respectively distributed at both ends of the first elongated sliding hole 421 and communicating with the first elongated sliding hole 421. The telescopic rod 41 is provided with an elongated guide hole 411. The length directions of the extended locking elongated hole 422, the retracted locking elongated hole 423 and the elongated guide hole 411 are all parallel, and the length direction of the elongated guide hole 411 is perpendicular to the first direction. The length direction of the first elongated sliding hole 421 is parallel to the first direction. The locking assembly 43 includes a drive rod 431, a locking pin 432 and an elastic positioning assembly. One end of the pin is pressed against the drive rod 431 and forms a guide channel 433 with the drive rod 431, and the other end is elastically connected to the telescopic rod 41; the locking pin 432 passes through one of the extended locking elongated hole 422, the first elongated sliding hole 421 and the retracted locking elongated hole 423, and passes through the elongated guide hole 411 and the guide channel 433; the guide channel 433 and the elongated guide hole 411 can guide the locking pin 432 to move along the length direction of the extended locking elongated hole 422; the support leg structure 3 is rotatably connected to one end of the pull-out shell 2 and can drive the drive rod 431 to reciprocate along the first direction, so that the drive rod 431 can drive the locking pin 432 to move along the length direction of the extended locking elongated hole 422.

[0068] Specifically, when the support leg structure 3 is not needed to support the base structure, an external force is applied to the support leg structure 3 to rotate it a certain angle in the first clockwise direction. The end of the support leg structure 3 connected to the pull-out shell 2 drives the drive rod 431 to move in the first sub-direction toward the base shell 11. The drive rod 431 applies a push force to the locking pin 432 in the first sub-direction, causing the locking pin 432 to move along the length of the lock elongated hole 422 from the lock elongated hole 422 into the first elongated sliding hole 421 under the guidance of the guide channel 433 and the elongated guide hole 411. The push force applied by the drive rod 431 to the locking pin 432 in the first sub-direction causes the elastic positioning component to undergo elastic deformation. When the locking pin 432 moves into the first elongated sliding hole 421, a force is applied to the pull-out shell 2 in the first sub-direction, causing the pull-out shell 2 and the support leg structure 3 to move synchronously in the first sub-direction toward the base shell 11. The telescopic rod 41, locking pin 432, and elastic positioning component of locking assembly 43 move synchronously along the first sub-direction until the telescopic rod 41 is moved to the retracted locking position along the first sub-direction. At this time, the pull-out shell 2 is moved to the first receiving position. Then, an external force is applied to the support leg structure 3 to drive the support leg structure 3 to continue rotating at a certain angle along the first clockwise direction until the support leg structure 3 is rotated to the second receiving position. During this process, the end of the support leg structure 3 that is rotatably connected to the pull-out shell 2 drives the drive rod 431 to move away from the base shell 11 along the second sub-direction. The elastic restoring force of the elastic positioning component is directed towards the second sub-direction and applied to the locking pin 432, so that the locking pin 432 moves along the length direction of the lock strip hole 422 from the first strip sliding hole 421 to the retracted locking strip hole 423 under the guidance of the guide channel 433 and the strip guide hole 411, locking the telescopic rod 41 in the retracted locking position. It can be understood that at this time, the locking assembly 43 returns to the initial position. So that during the process of rotating the support leg structure 3 from the support position to the second receiving position, the telescopic rod 41 can be directly unlocked to the extended locking position and can be directly locked to the retracted locking position.

[0069] Specifically, when the support leg structure 3 needs to support the base structure, an external force is applied to the support leg structure 3 to rotate it a certain angle in the second clockwise direction. The end of the support leg structure 3 connected to the pull-out shell 2 rotates, causing the drive rod 431 to move away from the base shell 11 in the second sub-direction. The drive rod 431 applies a push force to the locking pin 432 in the first sub-direction, causing the locking pin 432 to move from the retracted locking elongated hole 423 into the first elongated sliding hole 421 along the length direction of the extended locking elongated hole 422 under the guidance of the guide channel 433 and the elongated guide hole 411. The push force applied by the drive rod 431 to the locking pin 432 in the first sub-direction causes the elastic positioning component to undergo elastic deformation. When the locking pin 432 moves into the first elongated sliding hole 421, a force is applied to the pull-out shell 2 in the second sub-direction, causing the pull-out shell 2 and the support leg structure 3 to move synchronously away from the base shell 11 in the second sub-direction. The telescopic rod 41, locking pin 432, and elastic positioning component of the locking assembly 43 move synchronously along the second sub-direction until the telescopic rod 41 is moved to the extended locking position along the second sub-direction. At this time, the pull-out shell 2 is moved to the extended position. Then, an external force is applied to the support leg structure 3 to drive the support leg structure 3 to continue rotating at a certain angle along the second clockwise direction until the support leg structure 3 is rotated to the support position. During this process, the end of the support leg structure 3 that is rotatably connected to the pull-out shell 2 drives the drive rod 431 to move away from the base shell 11 along the second sub-direction. The elastic restoring force of the elastic positioning component is directed towards the second sub-direction and applied to the locking pin 432, so that the locking pin 432 moves along the length direction of the extended locking long strip hole 422 from the first long strip sliding hole 421 to the extended locking long strip hole 422 under the guidance of the guide channel 433 and the long strip guide hole 411, locking the telescopic rod 41 in the extended locking position. It can be understood that at this time, the locking assembly 43 returns to the initial position. This design allows the telescopic rod 41 to be unlocked to the retracted locking position and locked to the extended locking position directly during the rotation of the support leg structure 3 from the second receiving position to the supporting position. This effectively simplifies the operation steps, improves ease of operation, and enhances the user experience.

[0070] Specifically, such as Figure 3-7 and Figure 9-11As shown, one end of the drive rod 431 is provided with a first guide surface 4311 and a first abutment portion 4312. The elastic positioning assembly includes a positioning member 434 and an elastic member 435. One end of the positioning member 434 is provided with a second guide surface 4341 and a second abutment portion 4342. The first abutment portion 4312 abuts against the second abutment portion 4342, and the first abutment portion 4312, the first guide surface 4311, the second abutment portion 4342, and the second guide surface 4341 form a guide channel 433. The two ends of the elastic member 435 are respectively pressed against the other end of the positioning member 434 and the telescopic rod 41. This arrangement allows one end of the elastic positioning assembly to press against the drive rod 431 and form a guide channel 433 with the drive rod 431, while the other end is elastically connected to the telescopic rod 41. In this embodiment, the elastic member 435 is a spring.

[0071] Specifically, such as Figure 3-7 and Figure 9-11 As shown, the angle between the guiding direction of the guide channel 433 and the direction from one end of the drive rod 431 near the elastic positioning component to the other end is an acute angle. This arrangement allows the drive rod 431 to apply a force to the locking pin 432 along the first sub-direction, which, guided by the guide channel 433 and the elongated guide hole 411, drives the locking pin 432 to move along the length direction extending from the locking elongated hole 422; and allows the elastic positioning component to apply an elastic restoring force to the locking pin 432 along the second sub-direction, which, guided by the guide channel 433 and the elongated guide hole 411, drives the locking pin 432 to move along the length direction extending from the locking elongated hole 422. In this embodiment, the angle between the first guide surface 4311 and the direction of the drive rod 431 from one end near the elastic positioning component to the other end, the angle between the second guide surface 4341 and the direction of the drive rod 431 from one end near the elastic positioning component to the other end, and the angle between the guiding direction of the guide channel 433 and the direction of the drive rod 431 from one end near the elastic positioning component to the other end are all equal.

[0072] Specifically, such as Figure 3 , Figure 6 , Figure 7 and Figure 10 As shown, the drive rod 431 is also provided with a clearance channel 4313 that is adjacent to and connected to the guide channel 433 along the first direction. The clearance channel 4313 is used to accommodate the locking pin 432. By providing the clearance channel 4313, it is ensured that the locking pin 432 can move along the length direction of the extended locking elongated hole 422 between the extended locking elongated hole 422 and the first elongated sliding hole 421, and can also move along the length direction of the extended locking elongated hole 422 between the retracted locking elongated hole 423 and the first elongated sliding hole 421.

[0073] More specifically, such as Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the first elongated sliding hole 421, together with the extended locking elongated hole 422 and the retracted locking elongated hole 423, forms a door-shaped hole, and the opening of the door-shaped hole faces the lower bottom plane of the base shell 11.

[0074] It is understandable that, such as Figure 4 , Figure 5 and Figure 7-9 As shown, the length of the elongated guide hole 411 is greater than the length of the extended locking elongated hole 422, and also greater than the length of the retracted locking elongated hole 423. The length of the first elongated sliding hole 421 is greater than the length of the elongated guide hole 411.

[0075] Preferably, the length of the extended locking elongated hole 422 is equal to the length of the retracted locking elongated hole 423.

[0076] More specifically, such as Figure 4-9 As shown, there are two door-shaped holes, spaced apart along the second direction; there are also two elongated guide holes 411, spaced apart along the second direction; along the second direction, guide channels 433 are distributed between the two elongated guide holes 411, and the two elongated guide holes 411 are distributed between the two door-shaped holes. The second direction is perpendicular to the first direction and parallel to the lower bottom plane of the base shell 11. This arrangement effectively improves the working stability of the locking assembly 43 and enhances the performance and service life of the telescopic mechanism 4.

[0077] Among them, such as Figure 4-7 and Figure 12As shown, the other end of the drive rod 431 is fixedly provided with a push rod 4314, and the telescopic rod 41 is provided with a second long sliding hole 412. The length direction of the second long sliding hole 412 is parallel to the first direction. The support adjustment mechanism also includes a cam structure 5. The cam structure 5 includes a cam part 51 and a first connecting part 52 connected to each other. The pull-out shell 2 is provided with a rotating shaft 7. The cam part 51 is rotatably connected to the rotating shaft 7. The push rod 4314 passes through the second long sliding hole 412 and abuts against the outer peripheral surface of the cam part 51. The first connecting part 52 is connected to the support shell 31 of the support leg structure 3. The cam part 51 can drive the push rod 4314 to reciprocate along the first direction in the second long sliding hole 412. Specifically, during the rotation of the support leg structure 3 around the central axis of the rotating shaft 7, the cam structure 5 is driven to rotate synchronously around the central axis of the rotating shaft 7, so that the cam structure 5 drives the push rod 4314 to reciprocate along the first direction in the second long sliding hole 412. The push rod 4314 is fixedly connected to the drive rod 431, thereby driving the drive rod 431 to reciprocate along the first direction, so that the drive rod 431 and the elastic positioning component cooperate to drive the locking pin 432 to move along the length direction of the extended locking long hole 422 between the extended locking long hole 422 and the first long sliding hole 421, and can also move between the retracted locking long hole 423 and the first long sliding hole 421.

[0078] Specifically, such as Figure 7 As shown, the cam portion 51 includes a protrusion 511 and two recesses 512. Along the circumference of the cam portion 51, the protrusion 511 is distributed between the two recesses 512 and smoothly transitions with them. Along the first direction, a push rod 4314 can be partially inserted into one of the recesses 512 and abut against the inner circumferential surface of the recess 512, and the push rod 4314 can also abut against the outer circumferential surface of the protrusion 511. This arrangement allows the cam portion 51 to drive the push rod 4314 to reciprocate along the first direction in the second elongated sliding hole 412 during rotation around the central axis of the rotating shaft 7, thereby driving the drive rod 431 to reciprocate along the first direction.

[0079] More specifically, such as Figure 3-7 As shown, the drive rod 431 and the elastic positioning assembly are both located inside the cavity of the telescopic rod 41, and the push rod 4314 extends out of the cavity of the telescopic rod 41 through the second elongated sliding hole 412. This arrangement reduces the volume of the telescopic mechanism 4 and improves its aesthetics.

[0080] Among them, such as Figure 3-7As shown, the support adjustment mechanism also includes a pusher 6, which includes a pusher portion 61 and a second connecting portion 62 connected to the pusher portion 61. The pusher portion 61 is connected to one end of the telescopic rod 41 near the push rod 4314 along the first direction, and the second connecting portion 62 is fixedly connected to the rotating shaft 7. Specifically, when the locking assembly 43 unlocks the telescopic rod 41 to either the extended locking position or the retracted locking position, the external force applied to the pull-out shell 2 causes the pull-out shell 2, the support leg structure 3, the rotating shaft 7, and the pusher 6 to move synchronously along the first direction, so that the pusher portion 61 of the pusher 6 drives the telescopic rod 41 and the locking assembly 43 to move synchronously along the first direction.

[0081] Specifically, in this embodiment, such as Figure 1-5 and Figure 7 As shown, there are two telescopic mechanisms 4, which are spaced apart on both sides of the support leg structure 3 along the second direction. The first direction is perpendicular to the second direction and both are parallel to the lower plane of the base shell 11. This arrangement effectively improves the working stability and reliability of the telescopic mechanisms 4. It is understood that there are also two cam parts 51, each corresponding to one of the two telescopic mechanisms 4. There are also two pushing parts 61, each corresponding to one of the two telescopic mechanisms 4. It is understood that the axis of the rotating shaft 7 is parallel to the second direction.

[0082] Preferably, the first connecting portion 52 of the cam structure 5 is integrally formed with the two cam portions 51. This arrangement can improve the structural strength of the cam structure 5 and facilitate assembly.

[0083] Preferably, the second connecting portion 62 of the pusher 6 is integrally formed with the two pusher portions 61. This arrangement improves the structural strength of the pusher 6 and facilitates assembly.

[0084] In this embodiment, the pusher 6 is distributed on the outer periphery of the cam structure 5, and the two pusher parts 61 are connected to the ends of the two telescopic rods 41 near the push rod 4314 in a one-to-one correspondence.

[0085] Preferably, such as Figure 7 As shown, the support adjustment mechanism also includes a first torsion spring 8, which is sleeved on the rotating shaft 7. The first torsion spring 8 provides a portion of the driving force to rotate the support leg structure 3 from the second receiving position to the supporting position. Specifically, during the process of the support leg structure 3 rotating in the first clockwise direction to the second receiving position, the first torsion spring 8 undergoes elastic deformation. During the process of the support leg structure 3 rotating in the second clockwise direction to the supporting position, the elastic restoring force of the first torsion spring 8 drives the support leg structure 3 to rotate to the supporting position. This allows the support leg structure 3 to be easily opened to the supporting position.

[0086] Specifically, in this embodiment, such as Figure 7As shown, the first torsion spring 8 includes a torsion sleeve portion, a first free end, and two second free ends 81. The torsion sleeve portion is sleeved on the rotating shaft 7 and distributed axially between the two cam portions 51. The first free end abuts against one end face of the support housing 31 near the lower bottom plane of the base housing 11. The two second free ends 81 are correspondingly arranged with the two cam portions 51 and the two pushing portions 61, and the second free ends 81 pass around the cam portions 51 and the second connecting portion 62 and abut against the outer peripheral surface of the rotating shaft 7. This allows the elastic restoring force of the first torsion spring 8 to provide a portion of the driving force to drive the support leg structure 3 to rotate to the support position.

[0087] More preferably, such as Figure 3-5 , Figure 7 and Figure 12 As shown, the support housing 31 is provided with a second torsion spring 311. One free end of the second torsion spring 311 extends out of the end face of the support housing 31 near the lower bottom plane of the base shell 11 and is distributed at an angle to the end face of the support housing 31 near the lower bottom plane of the base shell 11. The other free end is fixedly connected to the support housing 31 and distributed inside the support housing 31. With this configuration, when the support leg structure 3 is housed in the second housing position, the free end of the second torsion spring 311 extending out of the support housing 31 is in a compressed state and undergoes elastic deformation. When the support leg structure 3 is rotated from the second housing position to the support position, the elastic restoring force of the free end of the second torsion spring 311 extending out of the support housing 31 can also provide a part of the driving force to drive the support leg structure 3 to rotate to the support position.

[0088] Optionally, there are multiple second torsion springs 311, which are spaced apart on the support housing 31. Specifically, in this embodiment, as shown... Figure 3-5 and Figure 7 As shown, an exemplary configuration is provided with two second torsion springs 311, and the two second torsion springs 311 are spaced apart along the second direction.

[0089] Among them, such as Figure 7 As shown, the support adjustment mechanism also includes a protective cover 9, which is rotatably connected to the rotating shaft 7 and overlaps one end face of the support housing 31 away from the lower bottom plane of the base housing 11. Specifically, in this embodiment, along the axial direction of the rotating shaft 7, the two connecting ends of the protective cover 9 connected to the rotating shaft 7 are distributed between the cam portion 51 and the second connecting portion 62.

[0090] Optionally, such as Figure 3-5 , Figure 7 and Figure 8As shown, a positioning pin 413 is provided at the end of the telescopic rod 41 away from the push rod 4314, and a third elongated sliding hole 424 is provided on the fixed rod 42. The positioning pin 413 slides in the third elongated sliding hole 424, and the length direction of the third elongated sliding hole 424 is parallel to the first direction. The positioning pin 413 and the third elongated sliding hole 424 are used to guide the telescopic rod 41 to slide along the first direction on the fixed rod 42.

[0091] Specifically, in this embodiment, there are two third elongated sliding holes 424, which are spaced apart along the second direction, and the telescopic rod 41 is partially housed within the fixed rod 42. This arrangement can further improve the working performance and service life of the telescopic mechanism 4.

[0092] Among them, such as Figure 1 and Figure 2 As shown, the bottom of the base shell 11 is recessed with a receiving groove 112. When the support leg structure 3 is in the second receiving position, the support leg structure 3 is received in the receiving groove 112. It can be understood that, along the second direction, the receiving groove 112 is located between the two telescopic mechanisms 4.

[0093] Specifically, such as Figure 1 and Figure 2 As shown, two elastic latches 12 are spaced apart within the receiving groove 112. The two elastic latches 12 can elastically lock the support leg structure 3 within the receiving groove 112 to prevent the support leg structure 3 from falling out of the receiving groove 112. When it is necessary to rotate the support leg structure 3 to the support position, it is only necessary to apply a force against the elastic latches 12 to separate the support leg structure 3 from the two elastic latches 12.

[0094] Among them, such as Figure 1-5 , Figure 7 and Figure 12 As shown, the support leg structure 3 also includes a support leg 32 slidably inserted into the support housing 31. The support housing 31 is also provided with a locking member 33, which can lock the relative position of the support leg 32 and the support housing 31 along the length direction. Specifically, as shown... Figure 12 As shown, the support leg 32 is provided with multiple locking slots 321 spaced apart along its length, and the locking member 33 can be inserted into one of the locking slots 321 to achieve adjustable support height of the support leg structure 3.

[0095] Among them, such as Figure 3 As shown, a limiting post 111 is provided inside the base shell 11. When the pull-out shell 2 is in the first receiving position, the pull-out shell 2 abuts against the limiting post 111. This further limits the pull-out shell 2 to be received in the first receiving position inside the base shell 11 along the first sub-direction.

[0096] Among them, such as Figure 1 and Figure 2As shown, the child safety seat also includes a car seat body 10, which is detachably connected to the base structure. The specific structure of the car seat body 10, and the specific details of the detachable connection between the car seat body 10 and the base structure, will not be described in detail here.

[0097] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A child safety seat, characterized in that, The base structure includes a base body (1) and a support adjustment mechanism disposed on the base body (1). The support adjustment mechanism includes a pull-out shell (2), a support leg structure (3), and a telescopic mechanism (4). The pull-out shell (2) is slidably disposed on the base shell (11) of the base body (1) along the first direction. The pull-out shell (2) is configured to have an extension position extending out of the base shell (11) along the first direction under the action of external force, and a first receiving position receiving into the base shell (11) along the first direction. One end of the support leg structure (3) is rotatably connected to the pull-out shell (2). The support leg structure (3) is configured to have a support position that is perpendicular to the base body (1) under the action of external force, and a second receiving position that is received at the bottom of the base shell (11). The telescopic mechanism (4) includes a telescopic rod (41), a fixed rod (42) fixedly disposed in the base shell (11), and a locking assembly (43) disposed on the telescopic rod (41). The telescopic rod (41) can slide relative to the fixed rod (42) along the first direction and has an extended locking position extending out of the fixed rod (42) and a retracted locking position retracting into the fixed rod (42). When the telescopic rod (41) is in the extended locking position, the pull-out shell (2) is in the extended position. When the telescopic rod (41) is in the retracted locking position, the pull-out shell (2) is in the first receiving position. The support leg structure (3) is rotatably connected to one end of the pull-out shell (2) and is configured to drive the locking assembly (43) to unlock the telescopic rod (41) in one of the extended locking position and the retracted locking position during rotation, and to lock the telescopic rod (41) in the other of the extended locking position and the retracted locking position. When the telescopic rod (41) is unlocked to one of the extended locking position and the retracted locking position, the external force applied to the pull-out shell (2) can drive the pull-out shell (2) and the support leg structure (3) to move synchronously along the first direction, and can drive the telescopic rod (41) and the locking assembly (43) to move synchronously along the first direction to the other of the extended locking position and the retracted locking position; The fixed rod (42) is provided with a first elongated sliding hole (421), and an extended locking elongated hole (422) and a retracted locking elongated hole (423) respectively distributed at both ends of the first elongated sliding hole (421) and communicating with the first elongated sliding hole (421). The telescopic rod (41) is provided with an elongated guide hole (411). The length directions of the extended locking elongated hole (422), the retracted locking elongated hole (423) and the elongated guide hole (411) are all parallel, and the length direction of the elongated guide hole (411) is perpendicular to the first direction. The length direction of the first elongated sliding hole (421) is parallel to the first direction. The locking assembly (43) includes a drive rod (431), a locking pin (432), and an elastic positioning assembly. One end of the elastic positioning assembly abuts against the drive rod (431) and forms a guide channel (433) with the drive rod (431), while the other end is elastically connected to the telescopic rod (41). The locking pin (432) passes through one of the extended locking elongated hole (422), the first elongated sliding hole (421), and the retracted locking elongated hole (423), and also passes through the elongated guide hole (432). 411) and the guide channel (433); the guide channel (433) and the elongated guide hole (411) can guide the locking pin (432) to move along the length direction of the extended locking elongated hole (422); the support leg structure (3) is rotatably connected to one end of the pull-out shell (2) and can drive the drive rod (431) to reciprocate along the first direction, so that the drive rod (431) can drive the locking pin (432) to move along the length direction of the extended locking elongated hole (422); One end of the drive rod (431) is provided with a first guide surface (4311) and a first abutment portion (4312). The elastic positioning component includes a positioning element (434) and an elastic element (435). One end of the positioning element (434) is provided with a second guide surface (4341) and a second abutment portion (4342). The first abutment portion (4312) abuts against the second abutment portion (4342), and the first abutment portion (4312), the first guide surface (4311), the second abutment portion (4342), and the second guide surface (4341) form the guide channel (433). The two ends of the elastic element (435) abut against the other end of the positioning element (434) and the telescopic rod (41), respectively.

2. The child safety seat of claim 1, wherein The angle between the guiding direction of the guide channel (433) and the direction of the drive rod (431) from one end near the elastic positioning component to the other end is an acute angle.

3. The child safety seat according to claim 1, characterized in that, The drive rod (431) is also provided with a clearance channel (4313) that is adjacent to and connected to the guide channel (433) along a first direction, and the clearance channel (4313) is used to accommodate the locking pin (432).

4. The child safety seat according to any one of claims 1-3, characterized in that, The other end of the drive rod (431) is fixedly provided with a push rod (4314), and the telescopic rod (41) is provided with a second elongated sliding hole (412), the length direction of the second elongated sliding hole (412) is parallel to the first direction; The support adjustment mechanism also includes a cam structure (5), which includes a cam part (51) and a first connecting part (52) connected together. The pull-out shell (2) is provided with a rotating shaft (7). The cam part (51) is rotatably connected to the rotating shaft (7). The push rod (4314) passes through the second elongated sliding hole (412) and abuts against the outer peripheral surface of the cam part (51). The first connecting part (52) is connected to the support shell (31) of the support leg structure (3). The cam part (51) can drive the push rod (4314) to reciprocate along the first direction in the second elongated sliding hole (412).

5. The child safety seat of claim 4, wherein, The cam portion (51) includes a protrusion (511) and two recesses (512). Along the circumference of the cam portion (51), the protrusion (511) is distributed between the two recesses (512) and smoothly transitions with the two recesses (512). Along the first direction, the push rod (4314) can be partially inserted into one of the recesses (512) and abut against the inner peripheral surface of the recess (512), and the push rod (4314) can abut against the outer peripheral surface of the protrusion (511).

6. The child safety seat according to claim 4, characterized in that, The support adjustment mechanism further includes a pusher (6), which includes a pusher (61) and a second connecting part (62) connected to the pusher (61). The pusher (61) is connected to one end of the telescopic rod (41) near the push rod (4314) along the first direction, and the second connecting part (62) is fixedly connected to the rotating shaft (7).

7. A child safety seat according to any one of claims 1-3, characterized in that The base shell (11) is provided with a limiting post (111). When the pull-out shell (2) is in the first receiving position, the pull-out shell (2) abuts against the limiting post (111).

8. A child safety seat according to any one of claims 1-3, characterized in that The telescopic mechanism (4) consists of two telescopic mechanisms (4), which are distributed at intervals on both sides of the support leg structure (3) along the second direction. The first direction is perpendicular to the second direction and both are parallel to the bottom plane of the base shell (11).

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