Safety seat base and child safety seat

Abstract

The utility model relates to the technical field of children products, and discloses a safety seat base and a child safety seat. The safety seat base comprises a base body which is provided with a mounting cavity; the retractor assembly is mounted in the mounting cavity and comprises a reel; the connecting belt is wound on the reel; the one-way locking assembly comprises an operation part and a one-way locking mechanism in linkage fit with the operation part, the operation part is movably arranged on the base body, the operation part is provided with a first position and a second position, in the first position, the one-way locking mechanism locks the reel in a one-way mode and the connecting belt can be pulled out in a one-way mode, and in the second position, the one-way locking mechanism locks the reel in a one-way mode. The one-way locking mechanism unlocks the reel, and the connecting belt can be automatically retracted. The problems that in the installation process of the child safety seat, operation is inconvenient, and efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of children's products, and in particular to a safety seat base and a child safety seat. Background Art

[0002] A child safety seat is a device designed specifically for children and installed on a car seat to effectively improve the safety of children riding in a car.

[0003] In the prior art, a car seat is generally provided with a LATCH system for installing a child safety seat. When installing the child safety seat, it is necessary to rely on the connection between the connecting belt and the connecting socket to achieve the installation and positioning of the child safety seat.

[0004] However, in the above-mentioned prior art, when installing the child safety seat, it is necessary to manually pull out the connecting belt and manually tighten the connecting belt after the connecting belt is connected to the connecting socket, which is inconvenient and inefficient. Summary of the invention

[0005] In view of this, the present invention provides a safety seat base and a child safety seat to solve the problems of inconvenient operation and low efficiency during the installation of the child safety seat.

[0006] In the first aspect, the present invention provides a safety seat base, including a base body, provided with an installation cavity; a retractor assembly, installed in the installation cavity, including a reel; a connecting belt, wound on the reel; a one-way locking assembly, including an operating part and a one-way locking mechanism cooperating therewith, the operating part being movably arranged on the base body, the operating part having a first position and a second position, in the first position, the one-way locking mechanism unidirectionally locks the reel and the connecting belt can be pulled out unidirectionally, and in the second position, the one-way locking mechanism unlocks the reel and the connecting belt can be automatically retracted.

[0007] Beneficial effects: A reel assembly is arranged in the base body, which has a compact structure and plays a protective role for the reel assembly. The connecting belt is wound on the reel and constrained by a one-way locking mechanism. In a natural state, the operating part is located in the first position, at which time the one-way locking mechanism plays a one-way locking role on the reel, and the connecting belt can be pulled out in one direction without any retraction action, which is convenient for the user to operate the connecting belt on one side of the base body in turn, and also convenient for the user to choose to pull out the connecting belt once or in several times, and the base body will not be deviated from the original position under the traction of the connecting belt, or tilted or deflected. After completing the connection between the connecting belt and the connecting socket, the user operates the operating part to the second position, at which time the one-way locking mechanism unlocks the reel, the connecting belt loses its restraining effect, and is automatically retracted and tensioned under the torsional force of the reel itself, completing the retraction and release of the connecting belt, and the operation is simple and quick.

[0008] In an optional embodiment, the one-way locking mechanism includes a one-way locking portion and a locking piece, wherein the one-way locking portion is fixed on the reel, and in the first position, the locking piece cooperates with the one-way locking portion so that the reel can rotate unidirectionally in the direction of pulling out the connecting belt, and in the second position, the locking piece is separated from the one-way locking portion so that the reel can rotate in the direction of retracting the connecting belt.

[0009] Beneficial effect: By fixing the one-way locking part on the reel, in the first position, the locking member cooperates with the one-way locking part to lock the reel in one direction, and the connecting belt can be pulled out in one direction without retracting, which is convenient for the user to operate the connecting belt on one side of the base body in sequence, and also convenient for the user to choose to pull out the connecting belt at one time or in batches. In the second position, the locking member is separated from the one-way locking part to unlock the reel, and the connecting belt loses its restraining effect. It is automatically retracted and tensioned under the torsional force of the reel itself, and the retraction and release operation of the connecting belt is convenient.

[0010] In an optional embodiment, the operating portion is rotatably disposed on the base body, and the operating portion is used to drive the locking member to move between the first position cooperating with the one-way locking portion and the second position separating from the one-way locking portion.

[0011] Beneficial effects: By rotating the operating part on the base body, the operating part only changes the rotation direction during operation, and the operation is convenient and reliable. By linking the operating part with the locking member, the operating part does not contact the locking member when it is in the first position, and the locking member cooperates with the one-way locking member in a natural state. At this time, the one-way locking connecting belt of the reel can be pulled out in one direction. When the operating part is in the second position, the locking member is driven to separate from the one-way locking part. At this time, the reel unlocking connecting belt can be automatically retracted and tensioned.

[0012] In an optional embodiment, the one-way locking assembly also includes an unlocking paddle, one end of the unlocking paddle is hinged to the base body together with the operating part via a hinge shaft, and the other end of the unlocking paddle is used to drive the locking member to move between the first position cooperating with the one-way locking part and the second position separating from the one-way locking part.

[0013] Beneficial effect: By setting up an unlocking paddle for transmission, the transmission distance of the operating part is extended, the structure of the one-way locking assembly is optimized, the unlocking paddle and the operating part are hinged on the base body through a hinge shaft, and the unlocking paddle rotates synchronously when the operating part rotates. The unlocking paddle can accurately transmit the action of the operating part.

[0014] In an optional embodiment, the reel assembly further includes a mounting bracket, a fixed bracket and an elastic reset member, the reel assembly is mounted in the mounting cavity via the mounting bracket, the reel is rotatably disposed on the mounting bracket, the fixed bracket is fixed relative to the mounting bracket, and the elastic reset member is pre-tightened between the reel and the fixed bracket.

[0015] Beneficial effects: The mounting bracket provides an installation base for the reel, the elastic reset member, and the fixed bracket, so that the elastic reset member can transmit torque between the fixed bracket and the reel. At the same time, after the various components of the reel assembly are connected to form a whole, they are installed in the mounting cavity of the base body, thereby improving the efficiency of production assembly or maintenance.

[0016] In an optional embodiment, the reel is provided with an axial through hole, the elastic return member is pre-tightened in the axial through hole, the reel is further provided with a through groove extending radially therethrough, the through groove and the elastic return member are avoided, the connecting belt is passed through the through groove and wound on the reel.

[0017] Beneficial effects: By setting an axial through hole on the reel, an accommodating space is provided for the elastic reset member, making the structure of the reel assembly more compact and saving space. At the same time, it also provides protection and limitation for the elastic reset member, reducing the possibility of damage to the elastic reset member and disengagement from the original position to cause structural failure. The torsional force required for the reel is set according to the pre-tightening degree of the elastic reset member, and the structure is simple and ingenious. By setting a through groove, the positioning and retraction of the connecting belt are facilitated.

[0018] In an optional embodiment, the one-way locking portion is a one-way locking gear disc. In the first position, the locking member is clamped on the one-way locking gear disc so that the one-way locking gear disc locks the reel in one direction. In the second position, the operating portion drives the locking member to disengage the one-way locking gear disc so that the one-way locking gear disc unlocks the reel.

[0019] Beneficial effect: By setting a one-way locking gear disc, when the locking piece is clamped on the one-way locking gear disc, the one-way locking gear disc locks the reel in one direction, so that the reel can only rotate in one direction. The structure is simple and reliable. When the reel needs to be unlocked, the locking piece can be disengaged from the one-way locking gear disc, and the operation is convenient.

[0020] In an optional embodiment, the locking member includes a hinged portion, a toothed portion and a toggle portion provided on the hinged portion, the hinged portion is hinged to the mounting bracket via a rotating shaft, the rotating shaft is pre-tightened on the mounting bracket, in the first position, the toothed portion is clamped in one of the tooth grooves of the one-way locking gear disk, in the second position, the unlocking paddle drives the toggle portion so that the toothed portion is disengaged from the tooth groove of the one-way locking gear disk.

[0021] Beneficial effects: The hinged portion provides a structural basis for the connection between the locking member and the mounting bracket. The toothed portion of the locking member can cooperate with any tooth groove on the one-way locking gear disc to effectively lock the one-way locking gear disc in one direction. By setting the toggle portion, the locking member and the operating portion or the unlocking paddle are conveniently linked. When the toggle portion is driven by the unlocking paddle or the operating portion, the locking member swings and the toothed portion separates from the tooth groove, thereby unlocking the one-way locking gear disc and allowing the reel to rotate freely.

[0022] In an optional embodiment, it further comprises a pressing arm, wherein the pressing arm is rotatably mounted on the base body, and the pressing arm is suitable for pressing the connecting belt at the second position.

[0023] Beneficial effect: By arranging the pressing arm, after the pressing arm is pressed down, it is pressed against the connecting belt and presses the connecting belt down, thereby further tensioning the connecting belt, reducing the possibility of shaking and deflection of the base body, and improving safety.

[0024] In an optional embodiment, a locking mechanism is further included, which includes a locking toothed disc, a locking member and a rotating pressure block, the locking toothed disc is fixed on the reel, the locking member and the rotating pressure block are respectively hinged on the reel assembly, the locking member is provided with a locking tooth portion matching the tooth groove of the locking toothed disc, and the pressing arm is suitable for pressing the rotating pressure block in the second position so that the locking member locks the locking toothed disc, thereby pressing the connecting belt.

[0025] Beneficial effect: By fixing a locking toothed disc on the reel and providing a locking piece adapted to the locking toothed disc, when the locking piece cooperates with the locking toothed disc, the locking tooth portion of the locking piece engages with the tooth groove of the locking toothed disc to prevent the locking toothed disc from rotating, thereby limiting the rotation of the reel. When the connecting belt has been tightened by the reel and further tensioned by the pressing arm, the locking piece locks the reel to a limited position, thereby fixing the length of the connecting belt and ensuring the stability of the safety seat base after installation. When the pressing arm is pressed down, the rotating pressing block is squeezed by the pressing arm to drive the locking tooth portion of the locking piece to insert into the locking toothed disc, thereby fixing the connecting belt while tensioning the connecting belt.

[0026] In an optional embodiment, the base body is further provided with an open slot communicating with the mounting cavity, and the operating portion is rotatably disposed in the open slot.

[0027] Beneficial effect: The operating part is accommodated by the open groove, which improves the space utilization, facilitates manual operation, and reduces the possibility of movement interference between the operating part and other structures.

[0028] In an optional embodiment, the base body is provided with a backrest, the opening slot is provided on the backrest, and the operating portion extends out of the opening slot.

[0029] Beneficial effect: the opening slot is arranged on the backrest of the base body and the operating part is extended out of the opening slot, which is convenient for the user to operate. The operation of the operating part is similar to the operation button, which is convenient and quick.

[0030] In an optional embodiment, openings are respectively provided on opposite sides of the base body, both ends of the connecting belt extend out of the openings respectively, and joints are respectively provided at both ends of the connecting belt, the pressing arm is hinged to the base body through a rotating shaft, and the axis of the reel is arranged perpendicular to the axis of the rotating shaft of the pressing arm.

[0031] Beneficial effects: By providing openings on opposite sides of the base body, the connecting belt is convenient to extend out of the base body, and the connecting belt can be quickly connected to the connecting socket of the vehicle through the joint. The pressing arm is hinged on the base body and the axis of its rotating shaft is perpendicular to the axis of the reel, so that the pressing arm further tensions the connecting belt in a direction perpendicular to the connecting belt, reducing the possibility of the connecting belt slipping during the further tensioning process, resulting in a weakened tensioning effect.

[0032] In a second aspect, the present invention further provides a child safety seat, comprising: a seat body and the above-mentioned safety seat base, wherein the seat body is mounted on the base body.

[0033] Beneficial effect: By providing a safety seat base with a retractor assembly and a one-way locking assembly, it is convenient for users to quickly and conveniently install the child safety seat on the car seat, and avoid the child safety seat from shifting, tilting and deflecting during the installation process, which may easily cause safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the overall structure of a safety seat base according to an embodiment of the present invention, wherein the pressing arm is located in an open position;

[0036] Figure 2 for Figure 1 Schematic diagram from another perspective;

[0037] Figure 3 It is a schematic diagram of the assembly structure of a retractor assembly, a connecting belt and a one-way locking assembly in a safety seat base according to an embodiment of the present invention;

[0038] Figure 4 It is a schematic diagram of a state in which a locking piece of a one-way locking assembly in a safety seat base according to an embodiment of the present invention is clamped on a one-way locking gear disc;

[0039] Figure 5 It is a schematic diagram of a state in which a locking member and a one-way locking gear disc of a one-way locking assembly in a safety seat base according to an embodiment of the present invention are separated;

[0040] Figure 6 It is a schematic diagram of the structure of the unlocking paddle and the operating part in the safety seat base according to an embodiment of the present invention;

[0041] Figure 7 It is a schematic diagram of an exploded structure of a retractor assembly structure in a safety seat base according to an embodiment of the present invention;

[0042] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part A;

[0043] Fig. 9 for Figure 7 A schematic diagram of the enlarged structure of the middle C part;

[0044] Fig.10 for Figure 7 A schematic diagram of the enlarged structure of part B;

[0045] Fig.11 A schematic diagram of the position and structural relationship between a retractor assembly and a one-way locking gear disc and a locking gear disc in a safety seat base according to an embodiment of the present invention;

[0046] Fig.12 It is a schematic structural diagram of a locking gear plate and a locking member of a locking mechanism in a safety seat base according to an embodiment of the present invention being disengaged;

[0047] Fig.13 It is a schematic structural diagram of a locking member of a locking mechanism in a safety seat base according to an embodiment of the present invention locking a locking gear disc;

[0048] Fig.14It is a structural schematic diagram of a safety seat base in which a pressing arm is located at a pressing position according to an embodiment of the present invention;

[0049] Fig.15 The present invention is a schematic diagram of a state in which an operating part of a safety seat base is pressed.

[0050] Description of reference numerals:

[0051] 100, base body; 101, mounting cavity; 102, backrest; 1021, opening slot; 200, retractor assembly; 201, reel; 2011, through hole; 2012, through slot; 202, mounting bracket; 2021, vertical plate; 20211, rotating shaft; 2022, bottom plate; 203, fixed bracket; 2031, connecting shaft; 20311, card slot; 2032, fixed end; 204, elastic reset member; 2041, connecting end; 205, end cover; 2051, connecting plug; 2052, card edge; 300, connecting belt; 301, joint; 3011, unlocking pull belt; 400, one-way locking assembly; 401, operating part; 4011, toggle end; 402, one-way locking mechanism; 4021, one-way locking part; 40211, one-way locking gear disc; 4022, locking member; 40221, hinged part; 40222, toothed part; 40223, toggle part; 403, unlocking paddle; 405, hinged shaft; 500, pressing arm; 501, arm beam; 502, connecting plate; 503, rotating shaft axis; 600, locking mechanism; 601, locking gear disc; 602, locking member; 6021, latching part; 6022, hinged end; 6023, driving rod; 603, rotating pressure block; 604, spring; 700, with bracket. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0053] A child safety seat is a safety device that can be installed in a car to protect infants and young children. Currently, cars are usually equipped with a LATCH interface specifically for installing child safety seats. The LATCH interface has three connection sockets, which are located on both sides and the top of the child safety seat. When installing a child safety seat, you need to connect the connection belt to the connection sockets on both sides of the child safety seat.

[0054] In the related art, the connecting belt is generally placed inside the child safety seat in a folded or rolled up manner. During installation, the user needs to manually pull out the connecting belt, connect the two ends of the connecting belt to the connecting sockets respectively, and then manually tighten the connecting belt to fix the child safety seat. The operation process is complicated and inefficient, and is affected by personal experience. The child safety seat may be offset, tilted, and rotated during the installation process, causing some safety hazards.

[0055] The present application proposes a safety seat base and a child safety seat. By arranging a retractor assembly and a one-way locking assembly in the safety seat base, the pulling out and retracting actions of the connecting belt are optimized, the installation operation efficiency is improved, and the possibility of deviation, tilting and rotation of the child safety seat during the installation process is reduced.

[0056] For the convenience of description, in the following embodiments, each technical feature is Figure 1 The orientations shown are for reference only, describing directions such as "up" and "down".

[0057] Combine the following Figures 1 to 15 , describing an embodiment of the present invention.

[0058] According to an embodiment of the present invention, on the one hand, a safety seat base is provided. Figures 1 to 3 as well as Figure 7 , mainly comprising: a base body 100, provided with an installation cavity 101; a reel assembly 200, installed in the installation cavity 101, including a reel 201; a connecting belt 300, wound on the reel 201; a one-way locking assembly 400, including an operating part 401 and a one-way locking mechanism 402 cooperating therewith, the operating part 401 being movably arranged on the base body 100, and the operating part 401 having a first position and a second position, in the first position, the one-way locking mechanism 402 unidirectionally locks the reel 201 and the connecting belt 300 can be pulled out unidirectionally, and in the second position, the one-way locking mechanism 402 unlocks the reel 201 and the connecting belt 300 can be automatically retracted.

[0059] In this embodiment, a reel assembly 200 is arranged in the base body 100, which has a compact structure and protects the reel assembly 200. The connecting belt 300 is wound by the reel 201, and the reel 201 is constrained by a one-way locking mechanism 402. In a natural state, the operating part 401 is located in the first position. At this time, the one-way locking mechanism 402 performs a one-way locking function on the reel 201. The connecting belt 300 can be pulled out in one direction without any retraction action. This is convenient for the user to operate the connecting belt 300 on one side of the base body 100 in turn, and it is also convenient for the user to choose to pull out the connecting belt 300 at one time or in batches, and the base body 100 will not deviate from its original position under the traction of the connecting belt 300, or appear tilted, deflected, etc. After completing the connection between the connecting belt 300 and the socket, the user operates the operating part 401 to the second position. At this time, the one-way locking mechanism 402 unlocks the reel 201, and the connecting belt 300 loses its restraining effect. It is automatically retracted and tensioned under the torsional force of the reel 201 itself, completing the retraction and release of the connecting belt 300. The operation is simple and quick.

[0060] In this embodiment, “the operating portion 401 is movably disposed on the base body 100 ” may mean that the operating portion 401 is rotatably disposed on the base body 100 , or may be slidably disposed on the base body 100 .

[0061] In addition, specifically, the connecting belt 300 can be a strip of polypropylene. This embodiment does not limit the specific form and specific matching method of the connecting belt 300 and the reel 201. Exemplarily, the connecting belt 300 can be set as a whole, the middle part of the whole connecting belt 300 is matched with the reel 201, and the two ends of the connecting belt 300 extend from the base body 100 on both sides of the base body 100 respectively. The connecting belt 300 can penetrate the reel 201 along the radial direction of the reel 201, so that when the reel 201 rotates, the part of the connecting belt 300 extending from the two sides of the reel 201 is wound on the reel 201. In some embodiments not shown, the middle part of the connecting belt 300 can also be directly fixed to the side wall of the reel 201 by bonding or other connection methods. In some other embodiments not shown, two connecting belts 300 may be provided, and the two connecting belts 300 extend out of the base body 100 from both sides of the base body 100, and one end of each of the two connecting belts 300 is fixedly connected to the reel 201, and the fixed connection method may be bonding to the side wall of the reel 201, or may be fixed to the side wall of the reel 201 by other connection methods. When the reel 201 rotates, the two connecting belts 300 are respectively wound on the reel 201. The specific form of the above-mentioned connecting belt 300 and the specific matching form with the reel 201 are all within the protection scope of this embodiment.

[0062] It should be noted that the specific form of the one-way locking mechanism 402 is not limited in this embodiment, and it can satisfy the requirement of limiting the rotation of the reel 201 only in the direction of releasing the connecting belt 300 in the first position, and releasing the rotation restriction of the reel 201 in the second position.

[0063] In one embodiment, the one-way locking mechanism 402 includes a one-way locking portion 4021 and a locking member 4022. The one-way locking portion 4021 is fixed on the reel 201. In a first position, the locking member 4022 cooperates with the one-way locking portion 4021 so that the reel 201 can rotate unidirectionally in the direction of pulling out the connecting belt 300. In a second position, the locking member 4022 is separated from the one-way locking portion 4021 so that the reel 201 can rotate in the direction of retracting the connecting belt 300.

[0064] In this embodiment, the one-way locking part 4021 is fixed on the reel 201. In the first position, the locking member 4022 cooperates with the one-way locking part 4021 to lock the reel 201 in one direction. At this time, the connecting belt 300 can be pulled out in one direction without retracting, which is convenient for the user to operate the connecting belt 300 on one side of the base body 100 in sequence, and also convenient for the user to choose to pull out the connecting belt 300 at one time or in batches. In the second position, the locking member 4022 is separated from the one-way locking part 4021 to unlock the reel 201, and the connecting belt 300 loses its restraining effect. It is automatically retracted and tensioned under the torsional force of the reel 201 itself, and the retraction and release operation of the connecting belt 300 is convenient.

[0065] In this embodiment, “the one-way locking portion 4021 is fixedly disposed on the reel 201 ”, which means that the one-way locking portion 4021 is fixedly sleeved outside the reel 201 , or is directly formed on the reel 201 .

[0066] In one embodiment, the operating portion 401 is rotatably disposed on the base body 100 , and the operating portion 401 is used to drive the locking member 4022 to move between a first position cooperating with the one-way locking portion 4021 and a second position separating from the one-way locking portion 4021 .

[0067] In this embodiment, the operating part 401 is rotatably set on the base body 100, and the operating part 401 only changes the rotation direction during operation, which is convenient and reliable to operate. The operating part 401 is linked with the locking member 4022. When the operating part 401 is in the first position, it does not contact the locking member 4022. The locking member 4022 cooperates with the one-way locking part 4021 in a natural state. At this time, the one-way locking connecting belt 300 of the reel 201 can be pulled out in one direction. When the operating part 401 is in the second position, it drives the locking member 4022 to separate from the one-way locking part 4021. At this time, the reel 201 unlocks the connecting belt 300 and can be automatically retracted and tensioned.

[0068] In one embodiment, the one-way locking assembly 400 also includes an unlocking paddle 403, one end of which is hinged to the base body 100 together with the operating part 401 through a hinge shaft 405, and the other end of the unlocking paddle 403 is used to drive the locking member 4022 to move between a first position cooperating with the one-way locking part 4021 and a second position separated from the one-way locking part 4021.

[0069] In this embodiment, an unlocking paddle 403 is provided for transmission, thereby extending the transmission distance of the operating part 401 and optimizing the structure of the one-way locking assembly 400. The unlocking paddle 403 and the operating part 401 are hinged together on the base body 100 through a hinge shaft 405. When the operating part 401 rotates, the unlocking paddle 403 rotates synchronously therewith, and the unlocking paddle 403 can accurately transmit the movement of the operating part 401.

[0070] It should also be noted that, in order to make the reel 201 have a torsional force in the initial state and automatically wind the connecting belt 300 on the reel 201, the reel assembly 200 can be provided with an elastic reset member 204, and the elastic reset member 204 connects the reel 201 with the base body 100, so that when the connecting belt 300 is pulled out by an external force, the reel 201 rotates while the elastic reset member 204 stores elastic potential energy, and in the second position, i.e., when the external force is removed, the elastic reset member 204 releases the elastic potential energy and drives the reel 201 to reverse, so that the connecting belt 300 is automatically retracted. The setting position of the elastic reset member 204 is not specifically limited here.

[0071] In some embodiments not shown, the retractor assembly 200 can also automatically retract the connecting belt 300 by providing a motor, the motor is installed on the base body 100, and the motor shaft of the motor is fixedly connected to the reel 201. When the operating part 401 is in the second position, the motor drives the reel 201 to rotate, thereby retracting and tightening the connecting belt 300.

[0072] See also Figure 1 as well as Figures 3 to 7 In one embodiment, the reel assembly 200 further includes a mounting bracket 202 and a fixed bracket 203. The reel assembly 200 is mounted in the mounting cavity 101 through the mounting bracket 202. The reel 201 is rotatably disposed on the mounting bracket 202. The fixed bracket 203 is fixed relative to the mounting bracket 202. The elastic reset member 204 is pre-tightened and disposed between the reel 201 and the fixed bracket 203.

[0073] Specifically, this embodiment does not limit the specific forms of the mounting bracket 202 and the fixing bracket 203. For example, the mounting bracket 202 includes a bottom plate 2022 and two vertical plates 2021 arranged relatively on the bottom plate 2022, and the reel 201 passes through the two vertical plates 2021 and is rotatably connected to the vertical plates 2021. The fixing bracket 203 includes a connecting shaft 2031 and a fixing end 2032, wherein the fixing end 2032 can be directly fixedly connected to the mounting bracket 202, or can be fixedly connected to the base body 100 so as to be relatively fixed to the mounting bracket 202.

[0074] It should be noted that the elastic reset member 204 can be a torsion spring, or a coil spring, a long spring or other forms of elastic members. This embodiment does not limit the specific connection form of the elastic reset member 204 with the reel 201 and the fixed bracket 203. For example, in some embodiments not shown, the connecting shaft 2031 of the fixed bracket 203 is arranged along the axis of the reel 201, and the elastic reset member 204 is located between the end of the connecting shaft 2031 and the end adjacent to the reel 201. One end of the elastic reset member 204 is connected to the fixed bracket 203 by a fixed sleeve or welding method, and the other end is fixedly connected to the end of the reel 201 by a clamping or welding method. When the reel 201 rotates, one end of the elastic reset member 204 rotates with the reel 201, while the other end is fixed, thereby elastic deformation occurs and elastic potential energy is stored.

[0075] It should be further explained that during the assembly of the retractor assembly 200, the elastic reset member 204 can be pre-tightened before installation, so that elastic potential energy is stored in advance in the elastic reset member 204. When the elastic reset member 204 is assembled with the fixing bracket 203, the reel 201 is automatically driven to rotate and the connecting belt 300 is wound and stored on the reel 201. When the connecting belt 300 is completely wound on the reel 201, the elastic reset member 204 still stores elastic potential energy, thereby continuously tightening the connecting belt 300 to prevent the connecting belt 300 from falling off.

[0076] In this embodiment, the mounting bracket 202 provides a mounting base for the reel 201, the elastic return member 204, and the fixed bracket 203, so that the elastic return member 204 can transmit torque between the fixed bracket 203 and the reel 201. At the same time, after the various components of the reel assembly 200 are connected to form a whole, they are installed in the mounting cavity 101 of the base body 100, thereby improving the efficiency of production assembly or maintenance.

[0077] See also Figures 7 to 11In one embodiment, the reel 201 is provided with an axial through hole 2011, and the elastic return member 204 is pre-tightened in the axial through hole 2011. The reel 201 is also provided with a through groove 2012 that penetrates along its radial direction. The through groove 2012 and the elastic return member 204 are avoided. The connecting belt 300 is passed through the through groove 2012 and wound on the reel 201.

[0078] Specifically, end caps 205 are fixedly provided at both ends of the reel 201, and the connecting shaft 2031 of the fixing bracket 203 passes through the end caps 205 from one end of the reel 201 and extends into the axial through hole 2011. The elastic reset member 204 is a long spring, which is arranged in the axial through hole 2011 and sleeved on the connecting shaft 2031 of the fixing bracket 203. A truncated cone-shaped connecting plug 2051 is fixedly provided at one end of one of the end caps 205 facing the inner side of the axial through hole 2011, and a plurality of clamping edges 2052 extending along the axial direction of the connecting plug 2051 are provided on the circumferential side wall of the connecting plug 2051. The first end of the elastic reset member 204 is sleeved on the connecting plug 2051, and the plurality of clamping edges 2052 respectively press against the elastic reset member 204 from the inner side to fix the first end of the elastic reset member 204. The second end of the elastic return member 204 has a connecting end 2041 extending radially along the connecting shaft 2031 . A slot 20311 is provided at the end of the connecting shaft 2031 . The connecting end 2041 is inserted into the slot 20311 , thereby fixing the second end of the elastic return member 204 .

[0079] It should be noted that the middle part of the connecting belt 300 may not be fixedly connected to the reel 201, and may also be fixedly connected to the reel 201 by bonding or other connection methods. When the connecting belt 300 is fixedly connected to the reel 201, the position of the connecting belt 300 is more stable, which helps to avoid displacement of the base body 100 during installation.

[0080] In this embodiment, an axial through hole 2011 is provided on the reel 201 to provide an accommodation space for the elastic reset member 204, making the structure of the reel assembly 200 more compact and saving space. At the same time, the elastic reset member 204 is also protected and limited, reducing the possibility of damage to the elastic reset member 204 and separation from its original position to cause structural failure. The torsional force required for the reel 201 is set according to the pre-tightening degree of the elastic reset member 204, and the structure is simple and ingenious. By providing a through groove 2012, the positioning and retraction of the connecting belt 300 are facilitated.

[0081] See also Figures 2 to 6In one embodiment, one end of the unlocking paddle 403 is hinged together with the operating portion 401 in the opening groove 1021 through the hinge shaft 405. In the first position, the other end of the unlocking paddle 403 is separated from the locking member 4022, and the locking member 4022 cooperates with the one-way locking portion 4021 to lock the reel 201 in one direction. In the second position, the other end of the unlocking paddle 403 drives the locking member 4022 to separate from the one-way locking portion 4021 to unlock the reel 201.

[0082] Specifically, there is a toggle end 4011 on the side wall of the operating part 401, which is located at the lower side of the unlocking paddle 403 and abuts against the unlocking paddle 403. When the operating part 401 is pressed, the toggle end 4011 squeezes the unlocking paddle 403, thereby pushing the unlocking paddle 403 to rotate, and then drives the locking member 4022 to separate from the one-way locking part 4021 for unlocking.

[0083] In this embodiment, when the operating part 401 is in the first position, the unlocking paddle 403 does not contact the one-way locking part 4021. When the operating part 401 is in the second position, the operating part 401 pushes the unlocking paddle 403 to drive the locking member 4022 to disengage the one-way locking part 4021 for unlocking. By setting the unlocking paddle 403 for transmission, the transmission distance of the operating part 401 is extended and the structure of the one-way locking assembly 400 is optimized.

[0084] In one embodiment, the one-way locking portion 4021 is a one-way locking gear disc 40211, which is fixed on the reel 201, and the locking member 4022 is hinged on the mounting bracket 202 and is arranged in cooperation with the one-way locking gear disc 40211. In a first position, the locking member 4022 is clamped on the one-way locking gear disc 40211 so that the one-way locking gear disc 40211 is one-way locked. In a second position, the unlocking paddle 403 drives the locking member 4022 to disengage the one-way locking gear disc 40211 so that the one-way locking gear disc 40211 is unlocked.

[0085] Specifically, the one-way locking toothed disc 40211 can be a ratchet or a slot directly opened on the reel 201, and the locking member 4022 is a pawl adapted to the ratchet. When the locking member 4022 is clamped on the one-way locking toothed disc 40211, the one-way locking toothed disc 40211 can rotate in the direction of unfolding the connecting belt 300, but cannot rotate in the direction of winding the connecting belt 300, thereby achieving one-way locking of the reel 201, facilitating the pulling out of the connecting belt 300, and after the pawl disengages the ratchet, the ratchet loses its constraint, and the connecting belt 300 can be automatically retracted. In some embodiments not shown, the one-way locking portion 4021 can also be other structures that can achieve a one-way locking function.

[0086] In this embodiment, a one-way locking gear disc 40211 and a locking member 4022 are provided, and the one-way locking gear disc 40211 is fixedly provided on the reel 201. When the locking member 4022 is clamped on the one-way locking gear disc 40211, the one-way locking gear disc 40211 locks the reel 201 in one direction, so that the reel 201 can only rotate in one direction. The structure is simple and reliable. When the reel 201 needs to be unlocked, the locking member 4022 can be disengaged from the one-way locking gear disc 40211.

[0087] In one embodiment, the locking member 4022 includes a hinged portion 40221 and a toothed portion 40222 and a toggle portion 40223 arranged on the hinged portion 40221. The hinged portion 40221 is hinged to the mounting bracket 202 through a rotating shaft 20211. The rotating shaft 20211 is pre-tightened on the mounting bracket 202. In a first position, the toothed portion 40222 is clamped in one of the tooth grooves of the one-way locking gear disk 40211. In a second position, the unlocking paddle 403 drives the toggle portion 40223 to disengage the toothed portion 40222 from the tooth groove of the one-way locking gear disk 40211.

[0088] Specifically, the locking member 4022 is mounted on one of the vertical plates 2021 of the mounting bracket 202 through the hinged portion 40221 and is located on the side away from the reel 201. The rotation axis 20211 between the locking member 4022 and the mounting bracket 202 is parallel to the axis of the reel 201. The toggle portion 40223 extends out of the mounting bracket 202 and is located on the upper side of the unlocking paddle 403. When the unlocking paddle 403 rotates upward under the drive of the operating portion 401, the unlocking paddle 403 abuts against and presses the toggle portion 40223, so that the locking member 4022 rotates and disengages the one-way locking toothed disc 40211.

[0089] In this embodiment, the hinged portion 40221 provides a structural basis for the connection between the locking member 4022 and the mounting bracket 202. The toothed portion 40222 of the locking member 4022 can cooperate with any tooth groove on the one-way locking gear disc 40211 to effectively lock the one-way locking gear disc 40211 in one direction. By providing the toggle portion 40223, the locking member 4022 is facilitated to be linked with the operating portion 401 or the unlocking paddle 403. When the toggle portion 40223 is driven by the unlocking paddle 403 or the operating portion 401, the locking member 4022 swings, and the toothed portion 4022 is separated from the tooth groove, so that the one-way locking gear disc 40211 is unlocked, so that the reel 201 can rotate freely.

[0090] See also Figures 1 to 3 In one embodiment, it further includes a pressing arm 500, which is rotatably mounted on the base body 100, and the pressing arm 500 is suitable for pressing the connecting belt 300 at the second position.

[0091] Specifically, the pressing arm 500 has an open position that is flipped upward and a pressing position that is pressed downward. The pressing arm 500 has two arm beams 501. One end of the two arm beams 501 is rotatably connected to the base body 100, and the other ends of the two arm beams 501 are fixedly connected via a connecting plate 502. The rotating shaft axis 503 of the pressing arm 500 is perpendicular to the axis of the reel 201. The two arm beams 501 are respectively located on different sides of the reel 201, so that when the pressing arm 500 is in the pressing position, the connecting belts 300 extending from both sides of the reel 201 are respectively pressed down and tensioned.

[0092] It should be noted that, in some embodiments not shown, a clamping plate adapted to the arm beam 501 of the pressing arm 500 may also be provided on the base body 100, and the clamping plate is located on the lower side of the extended position of the connecting belt 300, and a clamping groove is provided on the clamping plate. When the pressing arm 500 is in the pressing position, the pressing arm 500 presses the connecting belt 300 downward into the clamping groove, and cooperates with the clamping groove to clamp and fix the connecting belt 300, thereby realizing the positioning of the connecting belt 300.

[0093] In this embodiment, by providing a pressing arm 500, after the pressing arm 500 is pressed down, it presses against the connecting belt 300 and presses the connecting belt 300 down, thereby further tensioning the connecting belt 300, reducing the possibility of shaking and deflecting of the base body 100, and improving safety.

[0094] See also Figure 1 as well as Figures 12 to 15 In one embodiment, it also includes a locking mechanism 600, which includes a locking toothed disc 601, a locking member 602 and a rotating pressure block 603. The locking toothed disc 601 is fixed on the reel 201, and the locking member 602 and the rotating pressure block 603 are respectively hinged on the reel assembly 200. The locking member 602 is provided with a locking tooth portion 6021 matching the tooth groove of the locking toothed disc 601. The pressing arm 500 is suitable for pressing the rotating pressure block 603 in the second position so that the locking member 602 locks the locking toothed disc 601, thereby pressing the connecting belt 300.

[0095] Specifically, the locking gear disc 601 is located on the side of the mounting bracket 202 away from the one-way locking gear disc 40211, and the locking member 602 is hinged on the vertical plate 2021 of the mounting bracket 202 close to the locking gear disc 601. The rotating axis 20211 of the locking member 602 is parallel to the axis of the reel 201. When the locking member 602 rotates, the locking tooth portion 6021 moves along an arc trajectory toward or away from the one-way locking gear disc 40211.

[0096] In this embodiment, “the locking toothed disc 601 is fixedly mounted on the reel 201 ”, which means that the locking toothed disc 601 is fixedly sleeved on the reel 201 , or is integrally formed on the reel 201 , which is not limited here.

[0097] In addition, specifically, the locking member 602 includes a driving rod 6023 and a hinged end 6022, the driving rod 6023 and the latching tooth portion 6021 are respectively located on different sides of the hinged end 6022, and the driving rod 6023 extends out of the mounting bracket 202 to one side. A spring 604 is provided on the vertical plate 2021 of the mounting bracket 202, one end of the spring 604 is connected to the driving rod 6023, and the other end is connected to the vertical plate 2021 of the mounting bracket 202, and the spring 604 is in a stretched state when in a natural state, so that the latching tooth portion 6021 and the locking toothed disc 601 are initially in a separated state. The rotating pressing block 603 is rotatably connected to the mounting bracket 202, and the rotating pressing block 603 abuts against the upper side of the driving rod 6023. When the pressing arm 500 is located at the pressing position, the pressing arm 500 presses down the rotating pressing block 603, and synchronously drives the driving rod 6023 to rotate to compress the spring 604, so that the locking tooth portion 6021 is locked with the locking toothed disk 601. The length of the driving rod 6023 is greater than the length of the locking tooth portion 6021, so that a lever is formed on the locking member 602. When the pressing arm 500 presses down the rotating pressing block 603, the lever amplifies the downward force, so that the locking tooth portion 6021 is locked to the locking toothed disk 601 more reliably.

[0098] It should be noted that the locking toothed disc 601 may be a ratchet, and the corresponding toothed portion 6021 is a pawl adapted to the locking toothed disc 601. When the one-way locking toothed disc 40211 also uses a ratchet, the inclination direction of the teeth of the locking toothed disc 601 is opposite to that of the one-way locking toothed disc 40211.

[0099] In this embodiment, by fixing a locking toothed disc 601 on the reel 201 and providing a locking member 602 adapted to the locking toothed disc 601, when the locking member 602 cooperates with the locking toothed disc 601, the locking tooth portion 6021 of the locking member 602 engages with the tooth groove of the locking toothed disc 601 to prevent the locking toothed disc 601 from rotating, thereby limiting the rotation of the reel 201. When the connecting belt 300 has been tightened by the reel 201 and further tensioned by the pressing arm 500, the locking member 602 locks the reel 201 to limit the length of the connecting belt 300, thereby ensuring the stability of the safety seat base after installation. When the pressing arm 500 is pressed down, the rotating pressing block 603 is squeezed by the pressing arm 500 to drive the locking tooth portion 6021 of the locking member 602 to insert into the locking toothed disc 601, thereby tightening the connecting belt 300 and fixing the connecting belt 300.

[0100] As for the locking mechanism 600, it is necessary to further explain that the structure of the locking mechanism 600 is not unique. The locking mechanism 600 can play the function of locking the rotation of the reel 201 in coordination with the action of the pressing arm 500. In some embodiments not shown, the locking mechanism 600 includes a locking pressure block, which is rotatably connected to the base body 100 and arranged on the upper side of the reel 201. An insert block is arranged on the side wall of the locking pressure block. A plurality of slots distributed along the circumferential direction are arranged on the circumferential side wall of the reel 201. When the pressing arm 500 is pressed down, the locking pressure block is pressed down synchronously, and the insert block is inserted into one of the slots to limit the rotation of the reel 201. A torsion spring is arranged at the rotation connection between the locking pressure block and the base body 100, which is suitable for keeping the insert block and the slot separated before the pressing arm 500 is pressed down.

[0101] In one embodiment, the base body 100 is further provided with an opening slot 1021 communicating with the installation cavity 101 , and the operating portion 401 is rotatably disposed in the opening slot 1021 .

[0102] In this embodiment, the operating portion 401 is accommodated by the opening groove 1021, which improves space utilization, facilitates manual operation, and reduces the possibility of movement interference between the operating portion 401 and other structures.

[0103] See also Figure 2 and Figure 3 In one embodiment, the base body 100 is provided with a backrest 102 , an opening slot 1021 is provided on the backrest 102 , and the operating portion 401 extends out of the opening slot 1021 .

[0104] In this embodiment, the opening slot 1021 is disposed on the backrest 102 of the base body 100 , which is convenient for the user to operate, and the operation is convenient and quick.

[0105] In one embodiment, openings are respectively provided on opposite sides of the base body 100, openings are respectively extended from both ends of the connecting belt 300, and joints 301 are respectively provided at both ends of the connecting belt 300, the pressing arm 500 is hinged to the base body 100 through a rotating shaft, and the axis of the reel 201 is perpendicularly arranged to the rotating shaft axis 503 of the pressing arm 500.

[0106] Specifically, the connector 301 is provided with an unlocking pull strap 3011 for unlocking the connector 301 from the connecting socket. The base body 100 is provided with a belt bracket 700 in the installation cavity 101. The belt bracket 700 is distributed on both sides of the retractor assembly 200, and the belt bracket 700 has a guide groove for the connecting belt 300 to pass through, which guides and protects the connecting belt 300. At the same time, when the connecting belt 300 is tightened, the posture of the seat base can be automatically corrected through the mutual limitation of the connecting belt 300 and the belt bracket 700.

[0107] In this embodiment, openings are provided on opposite sides of the base body 100 to facilitate the connection belt 300 to extend out of the base body 100 and to adapt to the connection socket through the joint 301, so that the connection belt 300 can be quickly connected to the car seat. The pressing arm 500 is hinged on the base body 100 and its axis is perpendicular to the axis of the reel 201, so that the pressing arm 500 presses the connection belt 300 in a direction perpendicular to the connection belt 300, reducing the possibility that the connection belt 300 slips during further tensioning, resulting in a weakened tensioning effect.

[0108] In some of the above embodiments, when the user needs to install the safety seat base on the car seat, first place the base body 100 on the car seat, at this time, the operating part 401 is in the first position, the connecting belt 300 will not be automatically retracted, and the pressing arm 500 is in the upwardly flipped open position, the user can manually pull the connecting belt 300 out from both sides of the base body 100, and sequentially plug the connectors 301 at the ends of the connecting belt 300 on both sides of the base body 100 into the corresponding connecting sockets. Secondly, after completing the connection between the connector 301 of the connecting belt 300 and the connecting socket, the user presses the operating part 401 to the second position, the one-way locking mechanism 402 is unlocked, and the retractor assembly 200 quickly tightens the connecting belt 300 and limits the base body 100. Finally, the user presses down and rotates the pressing arm 500 to the pressing position to further tighten the connecting belt 300. At the same time, the pressing arm 500 squeezes the rotating pressing block 603 to make the locking mechanism 600 lock the reel 201, thereby fixing the connecting belt 300 to achieve the installation of the safety seat base.

[0109] According to an embodiment of the present invention, on the other hand, a child safety seat is provided, comprising a seat body and the above-mentioned safety seat base, wherein the seat body is mounted on the base body 100 .

[0110] In this embodiment, by providing a safety seat base with a retractor assembly 200 and a one-way locking assembly 400, it is convenient for the user to quickly and conveniently install the child safety seat on the car seat, and avoid the child safety seat from shifting, tilting and deflecting during the installation process, which may easily cause safety hazards.

[0111] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A safety seat base, characterized in that: include: The base body (100) is provided with a mounting cavity (101); A reel assembly (200), installed in the installation cavity (101), comprising a reel (201); A connecting belt (300) is wound on the reel (201); A one-way locking assembly (400) comprises an operating portion (401) and a one-way locking mechanism (402) cooperating therewith, wherein the operating portion (401) is movably arranged on the base body (100), and the operating portion (401) has a first position and a second position. In the first position, the one-way locking mechanism (402) one-way locks the reel (201) and the connecting belt (300) can be pulled out one-way; in the second position, the one-way locking mechanism (402) unlocks the reel (201) and the connecting belt (300) can be automatically retracted.

2. The safety seat base according to claim 1, characterized in that: The one-way locking mechanism (402) comprises a one-way locking portion (4021) and a locking piece (4022), wherein the one-way locking portion (4021) is fixedly arranged on the reel (201); in the first position, the locking piece (4022) cooperates with the one-way locking portion (4021) so that the reel (201) can rotate in one direction in the direction of pulling out the connecting belt (300); in the second position, the locking piece (4022) is separated from the one-way locking portion (4021) so that the reel (201) can rotate in the direction of retracting the connecting belt (300).

3. The safety seat base according to claim 2, characterized in that: The operating portion (401) is rotatably disposed on the base body (100), and the operating portion (401) is used to drive the locking member (4022) to move between the first position cooperating with the one-way locking portion (4021) and the second position separating from the one-way locking portion (4021).

4. The safety seat base according to claim 2, characterized in that: The one-way locking assembly (400) further comprises an unlocking paddle (403), one end of which is hinged together with the operating portion (401) on the base body (100) via a hinge shaft (405), and the other end of which is used to drive the locking member (4022) to move between the first position cooperating with the one-way locking portion (4021) and the second position separating from the one-way locking portion (4021).

5. The safety seat base according to claim 2, characterized in that: The reel assembly (200) further comprises a mounting bracket (202), a fixed bracket (203) and an elastic reset member (204); the reel assembly (200) is mounted in the mounting cavity (101) via the mounting bracket (202); the reel (201) is rotatably disposed on the mounting bracket (202); the fixed bracket (203) is fixedly disposed relative to the mounting bracket (202); and the elastic reset member (204) is pre-tightened and disposed between the reel (201) and the fixed bracket (203).

6. The safety seat base according to claim 5, characterized in that: The reel (201) is provided with an axial through hole (2011), the elastic return member (204) is pre-tightened in the axial through hole (2011), the reel (201) is further provided with a through groove (2012) penetrating along its radial direction, the through groove (2012) and the elastic return member (204) are arranged to avoid each other, and the connecting belt (300) is passed through the through groove (2012) and wound on the reel (201).

7. The safety seat base according to claim 5, characterized in that: The one-way locking portion (4021) is a one-way locking toothed disc (40211). In the first position, the locking member (4022) is clamped on the one-way locking toothed disc (40211) so that the one-way locking toothed disc (40211) unidirectionally locks the reel (201). In the second position, the operating portion (401) drives the locking member (4022) to disengage from the one-way locking toothed disc (40211) so that the one-way locking toothed disc (40211) unlocks the reel (201).

8. The safety seat base according to claim 7, characterized in that: The locking member (4022) comprises an articulated portion (40221) and a toothed portion (40222) and a toggle portion (40223) arranged on the articulated portion (40221); the articulated portion (40221) is articulated to the mounting bracket (202) via a rotating shaft (20211); the rotating shaft (20211) is pre-tightenedly arranged on the mounting bracket (202); in the first position, the toothed portion (40222) is clamped in one of the tooth grooves of the one-way locking toothed disk (40211); in the second position, the operating portion (401) drives the toggle portion (40223) so that the toothed portion (40222) is disengaged from the tooth groove of the one-way locking toothed disk (40211).

9. The safety seat base according to any one of claims 1 to 8, characterized in that: It also includes a pressing arm (500), which is rotatably mounted on the base body (100), and the pressing arm (500) is suitable for pressing the connecting belt (300) at the second position.

10. The safety seat base according to claim 9, characterized in that: The invention also comprises a locking mechanism (600), wherein the locking mechanism (600) comprises a locking toothed disc (601), a locking member (602) and a rotating pressure block (603), wherein the locking toothed disc (601) is fixed on the reel (201), the locking member (602) and the rotating pressure block (603) are respectively hinged on the reel assembly (200), the locking member (602) is provided with a tooth portion (6021) matching the tooth groove of the locking toothed disc (601), and the pressing arm (500) is suitable for pressing the rotating pressure block (603) at the second position so that the locking member (602) locks the locking toothed disc (601), thereby pressing the connecting belt (300).

11. The safety seat base according to any one of claims 1 to 8, characterized in that: The base body (100) is further provided with an open groove (1021) communicating with the installation cavity (101), and the operating portion (401) is rotatably disposed in the open groove (1021).

12. The safety seat base according to claim 11, characterized in that: The base body (100) is provided with a backrest (102), the opening slot (1021) is provided on the backrest (102), and the operating portion (401) extends out of the opening slot (1021).

13. The safety seat base according to claim 9, characterized in that: The base body (100) is provided with openings on opposite sides, and the two ends of the connecting belt (300) extend out of the openings respectively, and the two ends of the connecting belt (300) are provided with joints (301) respectively. The pressing arm (500) is hinged to the base body (100) through a rotating shaft, and the axis of the reel (201) is perpendicularly arranged to the axis (503) of the rotating shaft of the pressing arm (500).

14. A child safety seat, characterized in that: include: Seat body; The safety seat base according to any one of claims 1 to 13, wherein the seat body is mounted on the base body (100).

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