Upper pull belt assembly for automobile child safety seat and child safety seat

Abstract

The present invention relates to a top strap assembly for a child safety seat in a car and a child safety seat. The child safety seat in the car includes a seat back. The top strap assembly is used to connect the seat back to a fixed position on a car seat to restrain the seat back on the car seat. The top strap assembly includes a strap body and a connector connected to the strap body for connecting to the fixed position on the car seat. The strap body is also connected to the seat back via a quick-release buckle. The strap body of the top strap assembly is connected to the seat back of the child safety seat via a quick-release buckle. When it is necessary to release the top strap assembly, the user only needs to operate the quick-release buckle near the seat back, without having to laboriously reach out and operate a hook at the end of the strap as in the prior art. Therefore, the top strap assembly better meets the user's needs for quick assembly and quick release, thereby improving the user's experience.

Description

Technical Field

[0001] The present invention relates to the technical field of child safety seats for automobiles, and in particular to a top pull belt assembly for a child safety seat for automobiles and the child safety seat. Background Art

[0002] A child safety seat is a safety device designed specifically for children of different ages and body types. Installed in a car, it effectively improves child safety. In the event of a collision or sudden deceleration, it reduces impact and limits movement, minimizing risk to children. Existing child safety seats typically use restraining straps as an anti-tip mechanism.

[0003] For example, the Chinese utility model patent application with application number CN202122903806.X (authorization announcement number: CN216886373U) discloses a portable child safety seat, which includes an upper strap, one end of which is connected to the headrest of the seat, and the upper strap is provided with an upper strap adjuster for adjusting the length of the upper strap. The upper strap is provided with a fixing hook, and the fixing hook is detachably connected to an external fixing buckle.

[0004] However, existing top strap assemblies for child safety seats have certain drawbacks. Existing top strap assemblies have only one fixing hook for fully releasing the top strap. During use, when the top strap needs to be fully released, only the fixing hook at the end of the top strap can be released. However, the fixing point on the car seat is generally located at the rear bottom of the car seat, making operation very inconvenient. In other words, existing top strap assemblies for child safety seats cannot meet the requirements for quick assembly and quick release, and further improvement is needed. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a top pull strap assembly for a child safety seat in a car that can meet the needs of quick assembly and quick release and improve the user experience in response to the current status of the existing technology.

[0006] The second technical problem to be solved by the present invention is to provide a child safety seat for a car using the above-mentioned upper pull belt assembly in view of the current status of the existing technology.

[0007] The technical solution adopted by the present invention to solve the first technical problem is: an upper strap assembly for a car child safety seat, the car child safety seat includes a seat back, the upper strap assembly is used to connect the seat back and a fixed position on the car seat to restrain the seat back on the car seat, the upper strap assembly includes a strap body and a connector connected to the strap body and used to connect to the fixed position on the car seat, the strap body is also connected to the seat back by a quick-release lock.

[0008] Generally, the main body of the drawstring can be directly connected to the seat back through a quick-release buckle, but in order to facilitate the locking and unlocking of the quick-release buckle, the upper drawstring assembly also includes an auxiliary drawstring provided on the car seat back, and the auxiliary drawstring is connected to the main body of the drawstring through the quick-release buckle.

[0009] The quick-release lock buckle can adopt various quick-release lock buckle structures in the existing technology, but in order to better connect and adapt with the drawstring, the quick-release lock buckle includes a lock box with a lock tongue channel and a lock tongue that can be inserted into the lock tongue channel of the lock box and locked with the lock box. One of the lock box and the lock tongue is connected to the auxiliary drawstring, and the other is connected to the drawstring main body.

[0010] When the latch is unlocked and released from the lock box, the resilient member acts on the unlock button, causing the unlock button to always have a tendency to move from the second position to the first position.

[0011] A micro switch and an alarm module are also provided in the lock box. The alarm module is electrically connected to the micro switch. The micro switch is located in the moving path of the unlock button between the first position and the second position, and can be triggered when the unlock button moves to the second position, thereby causing the alarm to emit an alarm signal that the lock tongue is unlocked.

[0012] Typically, the connecting piece on the drawstring body can be a conventional hook or lock structure, but in order to facilitate connection with a fixed point on the car seat, the connecting piece on the drawstring body is a hook.

[0013] As an improvement, the hook is connected to the strap body in an adjustable position. The user can adjust the hook position according to actual needs to ensure that the upper strap assembly is in a taut state and the safety seat is securely restrained on the car seat.

[0014] As an improvement, the auxiliary drawstring is connected to the upper back side of the chair back.

[0015] The technical solution adopted by the present invention to solve the second technical problem is: a child safety seat, including a seat body and the above-mentioned upper pull belt assembly for a car child safety seat, the seat body including a base and a seat back, and the seat back is connected to a fixed position on the car seat through the upper pull belt assembly.

[0016] Compared with the prior art, the advantages of the present invention are as follows: the strap body of the upper strap assembly is connected to the backrest of the child safety seat through a quick-release buckle. When the upper strap assembly needs to be released, the user only needs to operate the quick-release buckle near the backrest position, without having to reach out and operate the hook at the end of the strap as in the prior art, which is more laborious. Therefore, the upper strap assembly better meets the user's needs for quick assembly and quick release, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a child safety seat in a state restrained on a car seat according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of a three-dimensional structure from another angle;

[0019] Figure 3 is a schematic diagram of the three-dimensional structure of a child safety seat according to an embodiment of the present invention;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of a child safety seat according to an embodiment of the present invention (the quick-release lock is in an unlocked and separated state);

[0021] Figure 5 A top view of a quick-release lock buckle according to an embodiment of the present invention;

[0022] Figure 6 for Figure 5 Cross-sectional view at AA in the middle;

[0023] Figure 7 Schematic diagram of the three-dimensional structure of the lock box of the quick-release lock buckle according to an embodiment of the present invention (the unlocking button is in a non-pressed state);

[0024] Figure 8 Schematic diagram of the three-dimensional structure of the lock box of the quick-release lock buckle according to an embodiment of the present invention (the unlocking button is in a pressed state);

[0025] Figure 9 This is a schematic diagram of the three-dimensional structure of the lock box without the outer shell of an embodiment of the present invention (the unlock button is in a non-pressed state);

[0026] Figure 10 This is a schematic diagram of the three-dimensional structure of the lock box without the outer shell of an embodiment of the present invention (the unlock button is in a pressed state);

[0027] Figure 11 for Figure 9 Left view of;

[0028] Figure 12 for Figure 10 Left view of . DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0030] In the present specification and claims, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Because the embodiments disclosed herein can be arranged in various orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0031] See also Figures 1-12 A child safety seat includes a seat body 2, which generally includes a base 22 and a seat back 21 connected to the base 22. The seat back 21 is typically arranged vertically. A top strap assembly for a child safety seat is often used to connect the seat back 21 to a fixed point 10 on the car seat 1, thereby restraining the seat back 21 on the car seat 1 and preventing the child safety seat from tipping over.

[0032] See also Figure 3 and Figure 4 The upper drawstring assembly for a child safety seat in a car of this embodiment includes a drawstring body 30 , an auxiliary drawstring 32 and a quick-insert buckle 33 .

[0033] The main drawstring 30 is longer than the auxiliary drawstring 32, which generally protrudes slightly beyond the rear side of the seat back 21. The first end of the auxiliary drawstring 32 is connected to the upper back of the seat back 21, and the second end is connected to the second end of the main drawstring 30 via a quick-release buckle 33. The first end of the main drawstring 30 is provided with a connector 31 for connecting to a fixing point 10 on the vehicle seat 1.

[0034] The quick-release buckle can employ a prior art quick-release buckle structure similar to that used for seat belts, such as the seat belt buckle device disclosed in application number CN201921418174.4. This quick-release buckle includes a lock box 331 having a lock tongue channel 3310 and a lock tongue 332. The lock tongue 332 can be inserted into the lock tongue channel 3310 of the lock box 331 and, once inserted into place, locks with the lock box 331. Pressing an unlock button 3311 on the lock box 331 releases the lock tongue 332, completing the unlocking process. In this embodiment, the lock box 331 is connected to the second end of the auxiliary drawstring 32, and the lock tongue 332 is connected to the second end of the drawstring body 30.

[0035] Typically, the connecting member 31 on the drawstring body 30 can be a conventional hook or lock structure. However, to facilitate connection with the fixing point 10 on the car seat 1, the connecting member 31 on the drawstring body 30 of this embodiment is a hook. The hook and the drawstring body 30 can be loosely adjusted at the connection point between them. In other words, the length of the drawstring body 30 between the hook and the lock tongue 332 can be adjusted according to actual needs. Therefore, the user can adjust the hook position according to actual needs to ensure that the upper drawstring assembly is in a taut state and the safety seat is securely restrained on the car seat 1.

[0036] The fixing point 10 on the above-mentioned car seat 1 is generally a fixing rod arranged on the rear side of the car seat 1, and the hook of the upper pull belt can be hung on the fixing rod.

[0037] See also Figure 5-Figure 12 The lock box 331 of the quick release lock buckle of this embodiment is further provided with an unlocking button 3311, an elastic member 333, a micro switch 336, an alarm module and a limit plate assembly.

[0038] The limiting piece assembly is arranged in the lock box 331, and includes two fixed pieces 334 and a movable piece 335 that moves closer to or farther away from one of the fixed pieces 334. There is a gap between the two fixed pieces 334, and the gap constitutes a lock tongue channel 3310 for the lock tongue 332 to enter and exit. The moving direction of the movable piece 335 is substantially perpendicular to the extension direction of the lock tongue channel 3310 (such as Figure 12 The movable piece 335 also has a locking portion 3350 that bends and extends toward the fixed piece 334. Correspondingly, the fixed piece 334 has a clearance opening 3340 for the locking portion 3350 to pass through. The lock tongue 332 also has a lock hole 3320 for the locking portion 3350 on the movable piece 335 to pass through. The unlocking button 3311 is arranged in a direction substantially parallel to the lock tongue channel 3310 (as shown in FIG. Figure 12The elastic member 333 of this embodiment is a spring, which abuts against the inner end of the unlocking button 3311, so that the unlocking button 3311 always has a tendency to move from the second position to the first position.

[0039] The unlock button 3311 has track grooves 3312 on its left and right sides for retaining the side portions of the movable piece 335. When the unlock button 3311 is pressed and moves from the first position to the second position, the track grooves 3312 act as a retaining force, driving the movable piece 335 away from the fixed piece 334 to the unlocked position. This allows the locking portion 3350 on the movable piece 335 to disengage from the locking hole 3320 of the locking tongue 332, releasing the lock on the locking tongue 332. After the lock tongue 332 is inserted into the lock box 331, the unlocking button 3311 is reset, that is, the unlocking button 3311 moves from the second position to the first position, and the movable piece 335 is driven to move toward the fixed piece 334 to the unlocking position through the limiting effect of the track groove 3312. The locking portion 3350 on the movable piece 335 passes through the clearance opening 3340 on the fixed piece 334 and is inserted into the lock hole 3320 of the lock tongue 332, thereby locking the lock tongue 332.

[0040] The lock box 331 is also provided with a microswitch 336 and an alarm module (not shown). The alarm module is preferably an alarm that generates an audible signal and is electrically connected to the microswitch 336. In this embodiment, the microswitch 336 is located in the movement path of the unlock button 3311 between the first and second positions. When the user presses the unlock button 3311 to unlock the lock, the unlock button 3311 moves to the second position, triggering the microswitch 336 and energizing the corresponding control circuit of the alarm, thereby emitting an alarm signal indicating that the lock tongue 332 is unlocked.

[0041] The strap body 30 of the upper strap assembly of this embodiment is connected to the backrest 21 of the child safety seat through a quick-release buckle. When the upper strap assembly needs to be released, the user only needs to operate the quick-release buckle near the backrest 21, without having to reach out and operate the hook at the end of the strap as in the prior art, which is more laborious. Therefore, the upper strap assembly better meets the user's needs for quick assembly and quick release, and improves the user experience.

[0042] This embodiment also relates to a child safety seat, which includes a seat body 2 and the aforementioned upper strap assembly. The seat body 2 includes a base 22 and a seat back 21 connected to the base 22. The seat back 21 is connected to the fixing point 10 on the car seat 1 via the aforementioned upper strap assembly.

Claims

1. A top strap assembly for a child safety seat for a car, the child safety seat comprising a seat back (21), the top strap assembly being used to connect the seat back (21) to a fixing point (10) on a car seat (1) so as to restrain the seat back (21) on the car seat (1), the top strap assembly comprising a strap body (30) and a connector (31) connected to the strap body (30) and used to connect to the fixing point (10) on the car seat (1), characterized in that: The drawstring main body (30) is also connected to the chair back (21) via a quick-release buckle; the upper drawstring assembly further comprises an auxiliary drawstring (32) provided on the chair back (21), and the auxiliary drawstring (32) is connected to the drawstring main body (30) via the quick-release buckle; The quick-release lock buckle comprises a lock box (331) having a lock tongue channel (3310) and a lock tongue (332) that can be inserted into the lock tongue channel (3310) of the lock box (331) and locked with the lock box (331); one of the lock box (331) and the lock tongue (332) is connected to the auxiliary drawstring (32), and the other is connected to the drawstring main body (30); The lock box (331) is further provided with an unlocking button (3311), an elastic member (333) and a limiting piece assembly. The limiting piece assembly is arranged in the lock box (331) and has a locking portion (3350) acting on the lock tongue (332). The unlocking button (3311) can move between a first position and a second position along a direction substantially parallel to the lock tongue channel (3310), and is configured to drive the locking portion (3350) of the limiting piece assembly to move to the locked position in the first position state and act on the lock tongue (332) in the plugged state, thereby locking the lock tongue (332) relative to the lock box (331), and to release the lock of the lock tongue (332) by driving the limiting piece assembly to the unlocking position in the second position state. The elastic member (333) acts on the unlocking button (3311) and makes the unlocking button (3311) always have a tendency to move from the second position to the first position. The limiting piece assembly is arranged in the lock box (331), including two fixed pieces (334) and a movable piece (335) that is close to or away from one of the fixed pieces (334). There is a gap between the two fixed pieces (334), and the gap constitutes a lock tongue channel (3310) for the lock tongue (332) to enter and exit. The moving direction of the movable piece (335) is substantially perpendicular to the extension direction of the lock tongue channel (3310). The movable piece (335) also has a lock buckle portion (3350) that is bent and extended toward the fixed piece (334). Correspondingly, the fixed piece (334) has a clearance opening (3340) for the lock buckle portion (3350) to pass through. The lock tongue (332) is The movable piece (335) is provided with a lock hole (3320) for the locking portion (3350) on the movable piece (335) to pass through, and the left and right sides of the unlocking button (3311) are provided with track grooves (3312) for the side of the movable piece (335) to limit therein. When the unlocking button (3311) moves from the first position to the second position, the movable piece (335) is driven to move away from the fixed piece (334) to the unlocking position by the limiting effect of the track grooves (3312). When the unlocking button (3311) moves from the second position to the first position, the movable piece (335) is driven to move toward the fixed piece (334) to the locking position by the limiting effect of the track grooves (3312); A micro switch (336) and an alarm module are further provided in the lock box (331). The alarm module is electrically connected to the micro switch (336). The micro switch (336) is located in the movement path of the unlock button (3311) between the first position and the second position, and can be triggered when the unlock button (3311) moves to the second position, thereby causing the alarm module to emit an alarm signal to unlock the lock tongue (332).

2. The upper pull strap assembly for a child safety seat of a car according to claim 1, characterized in that: The connecting piece (31) on the drawstring main body (30) is a hook.

3. The upper pull strap assembly for a child safety seat of a car according to claim 2, characterized in that: The hook is connected to the drawstring body (30) in a position-adjustable manner.

4. The upper pull strap assembly for a child safety seat of a car according to claim 1, characterized in that: The auxiliary drawstring (32) is connected to the upper back side of the chair back (21).

5. A child safety seat, characterized by: The invention comprises a seat body (2) and an upper strap assembly for a car child safety seat according to any one of claims 1 to 4, wherein the seat body (2) comprises a base (22) and a seat back (21), and the seat back (21) is connected to a fixing point (10) on a car seat (1) via the upper strap assembly.

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