Child car safety seat

Abstract

The present invention discloses a child car safety seat, wherein the safety belt tensioning device comprises a pressure rod with one end rotatably connected to a base, a locking mechanism capable of locking the other end of the pressure rod with the base, the locking mechanism comprising a locking rod slidably arranged on the pressure rod, a locking portion arranged on the base and capable of being connected with the locking rod to lock the locking mechanism, the safety belt tensioning device has at least two working states, when it is in the first working state, the pressure rod is closed relative to the base, and the locking rod is connected to the locking portion, the pressure rod presses the car safety belt on the base, when the safety belt tensioning device is in the second working state, the locking rod is disengaged from the locking portion, and the pressure rod opens relative to the base. The present invention, by means of the safety belt tensioning device, compresses the car safety belt and makes it straighter, so that the safety seat can be installed more stably and reliably without shaking. The structure is simple and the operation is convenient.

Description

Technical Field

[0001] The invention relates to a child car safety seat and belongs to children's products. Background Art

[0002] Child car safety seats can effectively protect children's safety when riding in a car. Child car safety seats generally include a base and a seat installed on the base for children to sit on. When in use, the base is installed on the car seat. There are generally two ways to install it: 1. The base without an ISOFIX device is fixed and installed through the car seat belt; 2. The base with an ISOFIX device is directly connected to the ISOFIX interface on the car seat through the ISOFIX device. In order to ensure the stable installation of the connection, the latter will also use the car seat belt to fix it at the same time to achieve double protection. When installing a child car safety seat through the car seat belt, the seat belt is passed around the base, and then the insert on the seat belt is snapped into the buckle on the car seat. However, after the connection is completed in this way, the car seat belt is not completely fixed and tightened, and the car safety seat still has a certain amount of room for movement. Summary of the invention

[0003] In order to solve the above problems, an object of the present invention is to provide a child car safety seat.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a child car safety seat, including a base and a seat connected to the base, the base is installed on the car seat at least through a car safety belt, the child car safety seat also includes a safety belt tensioning device, the safety belt tensioning device includes a pressure rod rotatably connected to the base at one end, and a locking mechanism capable of locking the other end of the pressure rod with the base, the locking mechanism includes a locking rod slidably arranged on the pressure rod, and a locking part arranged on the base and capable of cooperating with the locking rod to lock the locking mechanism, the safety belt tensioning device has at least two working states, when it is in the first working state, the pressure rod is closed relative to the base, and the locking rod is connected to the locking part, the pressure rod presses the car safety belt on the base, when the safety belt tensioning device is in the second working state, the locking rod is disengaged from the locking part, and the pressure rod is opened relative to the base.

[0005] Furthermore, the locking rod has a first position and a second position by sliding relative to the pressure rod. When the locking rod is connected to the locking portion, the locking rod is in the first position. The pressure rod is provided with a first elastic member that directly or indirectly applies force to the locking rod to keep the locking rod in the first position.

[0006] Furthermore, an unlocking member capable of driving the locking rod to slide from the first position to the second position is slidably provided on the pressure rod.

[0007] Furthermore, the seat belt tensioning device also has an unlocked transition state, which is in the process of converting from the first working state to the second working state. When the seat belt tensioning device is converted from the first working state to the unlocked transition state, the locking rod remains in the first position, and the pressure rod rotates toward the base to compress the accommodating space and disengage the locking rod from the locking portion. When the seat belt tensioning device is converted from the unlocked transition state to the second working state, the unlocking member drives the locking rod to slide to the second position, and the pressure rod rotates in the direction away from the base.

[0008] Furthermore, the locking portion is hook-shaped, and when the locking mechanism is locked, the locking portion hooks the locking rod.

[0009] Furthermore, the locking portion is fixedly arranged on the base.

[0010] Furthermore, the locking rod and the unlocking member are integrally arranged, and the first elastic member directly applies force to the unlocking member.

[0011] Further, the moving direction of the locking rod is perpendicular to the rotation axis of the pressing rod.

[0012] Furthermore, when the seat belt tensioning device is in the first working state, there is an accommodating space between the pressure rod and the base, which can accommodate the car seat belt and tighten it. When the car seat belt is located in the accommodating space, the car seat belt is tightened by the pressure of the pressure rod and exerts a reaction force on the pressure rod. The reaction force and the force exerted by the first elastic member together keep the locking rod connected to the locking part.

[0013] Furthermore, the rear end of the pressure rod is rotatably connected to the rear part of the base, and the rotation axis between the pressure rod and the base extends in the left-right direction.

[0014] Furthermore, a window, a sliding slider, and a second elastic member applying force to the slider are provided on the base, and a first mark and a second mark are provided on the slider. When the seat belt tensioning device is in a first working state, the locking rod presses against the slider and drives the slider to slide until the first mark is exposed from the window; when the seat belt tensioning device is in a second working state, the locking rod disengages from the slider, and the second elastic member drives the slider to slide until the second mark is exposed from the window.

[0015] By adopting the above technical solution, the child car safety seat can compress the car safety belt and make it straighter through the safety belt compression device, so that the child car safety seat can be installed more stably and reliably without shaking. The safety belt compression device has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of a top view of a base in a child car safety seat in one embodiment of the present invention, wherein the safety belt tightening device is in a first working state;

[0017] Attached Figure 2 For attachment Figure 1 Schematic diagram of the AA section structure;

[0018] Attached Figure 3 For attachment Figure 1 The schematic diagram of the structure of the base in a top view is shown, wherein the safety belt tensioning device is in a second working state;

[0019] Attached Figure 4 For attachment Figure 3 Schematic diagram of the structure of the middle BB section;

[0020] Attached Figure 5 For attachment Figure 1-4 A schematic diagram of the structure of the pressure rod of the seat belt tensioning device shown in ;

[0021] Attached Figure 6 For attachment Figure 5 Schematic diagram of the CC cross-section structure;

[0022] Attached Figure 7 For attachment Figure 5 Axonometric view of

[0023] Attached Figure 8 For attachment Figure 2 and attached Figure 4 The structural schematic diagram of the locking part is shown in FIG.

[0024] The numbers in the figure are:

[0025] 1. Base; 2. Automobile safety belt; 3. Pressure rod; 31. Rotation axis; 4. Locking rod; 5. Locking part; 51. Inclined surface; 52. Hook groove; 6. First elastic member; 7. Unlocking member; 8. Sliding block; 9. Second elastic member. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0027] The terms "front" and "rear" in the following embodiments are defined according to the normal usage habits of child car safety seats. After the base is installed, the direction toward the front of the car is "front", and the direction toward the rear of the car is "rear". "Left" and "right" are the directions toward the left and right sides of the car, respectively.

[0028] Reference Figure 1 To Attachment Figure 8The child car safety seat in this embodiment includes a base 1 and a seat (not shown in the drawings) connected to the base 1 for the child to sit on. The base 1 is installed on the car seat at least through the car safety belt 2. The child car safety seat also includes a safety belt pressing device for pressing and fixing the car safety belt 2 and making it straight.

[0029] The seat belt tightening device comprises a pressure rod 3 with one end rotatably connected to the base 1, and a locking mechanism capable of locking the other end of the pressure rod 3 with the base 1. The pressure rod 3 is used to tighten the car seat belt 2, and the locking mechanism is used to lock the pressure rod 3 with the base 1 when the pressure rod 3 tightens the car seat belt 2.

[0030] As attached Figure 1 and attached Figure 5 In the embodiment shown, the pressure rod 3 is U-shaped, which can increase the contact area between the pressure rod 3 and the vehicle safety belt 2, thereby better fixing the vehicle safety belt 2. The rear end of the pressure rod 3 is rotatably connected to the rear part of the base 1 through the rotating shaft 31, the rotation axis between the pressure rod 3 and the base 1 extends in the left-right direction, and the length direction of the pressure rod 3 extends in the front-back direction.

[0031] As attached Figure 2 and attached Figure 4 As shown, the locking mechanism includes a locking rod 4 slidably arranged on the pressure rod 3, and a locking portion 5 arranged on the base 1 and capable of being matched and connected with the locking rod 4. The locking rod 4 is connected to the locking portion 5 to lock the locking mechanism, and the locking rod 4 is disengaged from the locking portion 5 to unlock the locking mechanism.

[0032] The locking rod 4 is arranged at the front of the pressing rod 3, and the axial direction of the locking rod 4 is arranged perpendicular to the length direction of the pressing rod 3. Preferably, the locking rod 4 is arranged between the left and right sides of the U-shaped pressing rod 3. The moving direction of the locking rod 4 is perpendicular to the rotation axis of the pressing rod 3.

[0033] The locking rod 4 has a first position and a second position by sliding relative to the pressure rod 3. When the locking rod 4 is connected to the locking portion 5, the locking rod 4 is in the first position, and the locking rod 4 switches to the second position by moving toward the front end of the pressure rod 3. The pressure rod 3 is provided with a first elastic member 6 that directly or indirectly applies a force to the locking rod 4. The first elastic member 6 is used to move the locking rod 4 from the second position to the first position or to keep the first elastic member 6 in the first position. The pressure rod 3 is also slidably provided with an unlocking member 7, which is used to drive the locking rod 4 to overcome the force of the first elastic member 6 and slide from the first position to the second position. In this embodiment, the locking rod 4 and the unlocking member 7 are integrally provided, and the first elastic member 6 directly applies a force to the unlocking member 7.

[0034] As attached Figure 2 , Attachment Figure 4 And attached Figure 8As shown, the locking portion 5 is fixedly arranged on the base 1 . The locking portion 5 in this embodiment is hook-shaped, and the opening direction of the hook groove 52 faces downward. When the locking mechanism is locked, the locking portion 5 hooks the locking rod 4 .

[0035] The seat belt tensioning device has at least two working states. When it is in the first working state, the pressure rod 3 is closed relative to the base 1, and the locking rod 4 is connected to the locking part 5, and the pressure rod 3 presses the car seat belt 2 onto the base 1. When the seat belt tensioning device is in the second working state, the locking rod 4 is disengaged from the locking part 5, and the pressure rod 3 is opened relative to the base 1.

[0036] In a more preferred embodiment, the locking portion 5 has a slope 51. When the seat belt tensioning device is switched from the second working state to the first working state, the pressure rod 3 rotates downward until the locking rod 4 touches the slope 51. The pressure rod 3 continues to be rotated, and the locking rod 4 slides in contact with the slope 51, thereby pushing the locking rod 4 to overcome the force of the first elastic member 6 and move. After the locking rod 4 passes over the slope 51, it enters the hook groove 52 of the locking portion 5 under the action of the first elastic member 6.

[0037] Since the hook groove 52 of the hook-shaped locking portion 5 is opened downward, and the moving direction of the locking rod 4 is the front-to-back direction, when the seat belt tensioning device is in the first working state, the direct movement of the locking rod 4 will be blocked by the groove wall of the hook groove 52, because the position of the locking rod 4 cannot be directly switched. Therefore, in a more preferred embodiment, the seat belt tensioning device also has an unlocking transition state, which is in the process of switching from the first working state to the second working state. When the seat belt tensioning device switches from the first working state to the unlocking transition state, the locking rod 4 remains in the first position, the pressure rod 3 rotates toward the base 1 to compress the accommodating space, and the locking rod 4 is separated from the hook groove 52 of the locking portion 5. When the seat belt tensioning device switches from the unlocking transition state to the second working state, the unlocking member 7 drives the locking rod 4 to slide to the second position, and the pressure rod 3 rotates in the direction away from the base 1, so that when the pressure rod 3 rotates, the locking rod 4 can avoid the locking portion 5.

[0038] When the seat belt tensioning device is in the first working state, there is an accommodating space between the pressure rod 3 and the base 1, which can accommodate the car seat belt 2 and compress it to fix it. When the car seat belt 2 is located in the accommodating space, the car seat belt 2 is tightened by the pressure of the pressure rod 3 and exerts a reaction force on the pressure rod 3. Due to the reaction force, even if the car is bumped during driving, the pressure rod 3 will not rotate toward the base 1. Under the combined action of the reaction force and the force exerted by the first elastic member 6, the locking rod 4 remains connected to the locking part 5.

[0039] In a more preferred embodiment, the base 1 is provided with a window (not shown in the drawings), a sliding block 8, and a second elastic member 9 exerting force on the sliding block 8 (the sliding block 8 and the second elastic member 9 are shown in the attached drawings). Figure 2 and attached Figure 4 As shown in the figure, the slider 8 has a first mark and a second mark (not shown in the figure). When the seat belt tensioning device is in the first working state, the locking rod 4 presses against the slider 8 and drives the slider 8 to slide until the first mark is exposed from the window. When the seat belt tensioning device is in the second working state, the locking rod 4 is separated from the slider 8, and the second elastic member 9 drives the slider 8 to slide until the second mark is exposed from the window. The first mark and the second mark correspond to the first state and the second state of the seat belt tensioning device, respectively, so that the operator can more intuitively understand the current state of the seat belt tensioning device and accurately know whether the vehicle seat belt 2 is tightened and fixed.

[0040] Working principle:

[0041] When installing a child car safety seat, first pass the car safety belt 2 around a specific position on the base 1 (the specific position is below the pressure rod 3), and snap the insert on the car safety belt 2 into the buckle on the car seat. Then, turn the pressure rod 3 downward to compress and straighten the car safety belt 2, and connect the locking rod 4 with the locking part 5 to lock the current position of the pressure rod 3. When removing the child car safety seat, first turn the pressure rod 3 downward to disengage the locking rod 4 from the locking part 5, and then press the unlocking member 7 to drive the locking rod 4 to move toward the front end of the pressure rod 3, so that the locking rod 4 avoids the locking part 5, and then turn the pressure rod 3 upward to release the car safety belt 2, and then you can open the insert on the car safety belt 2 and the buckle on the car seat, and remove the car safety belt 2 from the base 1.

[0042] The child car safety seat in the above embodiment uses the safety belt tightening device to tighten the car safety belt and make it straighter, so that the child car safety seat can be installed more stably and reliably without shaking. The safety belt tightening device has a simple structure and is easy to operate.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A child car safety seat, comprising a base (1) and a seat connected to the base (1), wherein the base (1) is mounted on the car seat at least via a car safety belt (2), and characterized in that: The child car safety seat further comprises a safety belt tensioning device, the safety belt tensioning device comprising a pressure rod (3) with one end rotatably connected to the base (1), a locking mechanism capable of locking the other end of the pressure rod (3) with the base (1), the locking mechanism comprising a locking rod (4) slidably arranged on the pressure rod (3), a locking portion (5) arranged on the base (1) and capable of being matched and connected with the locking rod (4) so ​​that the locking mechanism is locked, the locking portion (5) being hook-shaped, the opening direction of the hook groove (52) being downward, and when the locking mechanism is locked, the locking portion (5) hooks the locking rod (4). The seat belt tensioning device has at least two working states. When it is in a first working state, the pressure rod (3) is closed relative to the base (1), and the locking rod (4) is connected to the locking portion (5). The pressure rod (3) presses the vehicle seat belt (2) onto the base (1). There is a receiving space between the pressure rod (3) and the base (1) that can accommodate the vehicle seat belt (2) and tighten and fix it. When the seat belt tensioning device is in a second working state, the locking rod (4) is separated from the locking portion (5), and the pressure rod (3) is opened relative to the base (1). The locking rod (4) has a first position and a second position by sliding relative to the pressure rod (3); when the locking rod (4) is connected to the locking portion (5), the locking rod (4) is in the first position; the pressure rod (3) is provided with a first elastic member (6) for directly or indirectly applying a force to the locking rod (4) so ​​that the locking rod (4) is kept in the first position; and the pressure rod (3) is slidably provided with an unlocking member (7) capable of driving the locking rod (4) to slide from the first position to the second position; The seat belt tensioning device also has an unlocked transition state, which is in the process of converting from the first working state to the second working state. When the seat belt tensioning device converts from the first working state to the unlocked transition state, the locking rod (4) is maintained at the first position, and the pressure rod (3) rotates toward the base (1) so that the accommodating space is compressed and the locking rod (4) is disengaged from the locking portion (5). When the seat belt tensioning device converts from the unlocked transition state to the second working state, the unlocking member (7) drives the locking rod (4) to slide to the second position, and the pressure rod (3) rotates in a direction away from the base (1).

2. The child car safety seat according to claim 1, characterized in that: The locking portion (5) is fixedly arranged on the base (1).

3. The child car safety seat according to claim 1, characterized in that: The locking rod (4) and the unlocking member (7) are integrally arranged, and the first elastic member (6) directly applies force to the unlocking member (7).

4. The child car safety seat according to claim 1, characterized in that: The moving direction of the locking rod (4) is perpendicular to the rotation axis of the pressing rod (3).

5. The child car safety seat according to claim 1, characterized in that: When the vehicle safety belt (2) is located in the accommodating space, the vehicle safety belt (2) is tightened by the pressure of the pressure rod (3) and exerts a reaction force on the pressure rod (3), and the reaction force and the force exerted by the first elastic member (6) together keep the locking rod (4) connected to the locking portion (5).

6. The child car safety seat according to claim 1, characterized in that: The rear end of the pressure rod (3) is rotatably connected to the rear part of the base (1), and the rotation axis between the pressure rod (3) and the base (1) extends in the left-right direction.

7. The child car safety seat according to claim 1, characterized in that: The base (1) is provided with a window, a sliding slider (8), and a second elastic member (9) for applying force to the slider (8); the slider (8) has a first mark and a second mark; when the seat belt tensioning device is in a first working state, the locking rod (4) presses against the slider (8) and drives the slider (8) to slide until the first mark is exposed from the window; when the seat belt tensioning device is in a second working state, the locking rod (4) is disengaged from the slider (8), and the second elastic member (9) drives the slider (8) to slide until the second mark is exposed from the window.

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