A safety seat for a vehicle

Abstract

The present application relates to a kind of automobile safety seats, including base, seat is set on base, left side of seat is provided with left side collision protection device, seat is also provided with pressing plate, pulling mechanism driven by pressure plate, pressing plate has not been under pressure working state and withstands pressure working state, in the process that pressing plate is converted from not under pressure working state to withstand pressure working state, pulling mechanism pulls left locking device from locking working state to enter unlocking working state.When the pressing plate of automobile safety seat is under pressure, the side collision protection device in closed state will be opened automatically, improve the safety of automobile safety seat, when not using side collision protection device, it can also be opened and closed manually, easy to operate, and reduce the size of automobile safety seat.

Description

Technical Field

[0001] This invention belongs to the field of children's products technology, specifically relating to a car safety seat. Background Technology

[0002] Car safety seats are typically installed in cars to effectively improve children's safety while traveling. One type of car safety seat in the current technology is often equipped with a side impact protection device to prevent children from being injured by side impacts in the event of an accident. However, considering the ease of accidental activation during transportation and the size of the seats during transport, the side impact protection device is usually in the off state when not in use. If parents are negligent or lack safety awareness and forget or deliberately fail to activate the side impact protection device while the child is riding in the car, the side impact protection device cannot play its protective role for the child, resulting in low safety of the car safety seat. Summary of the Invention

[0003] The purpose of this invention is to provide an improved car safety seat in which the side impact protection device automatically opens when the pressure plate on the car safety seat is subjected to pressure, thereby improving the safety of the car safety seat.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A car safety seat includes a base and a seat mounted on the base. A left-side collision protection device and a right-side collision protection device are respectively provided on the left and right sides of the seat. Both the left-side and right-side collision protection devices have a retracted state and an open state. In the retracted state, the left-side collision protection device is housed within the left side of the seat; in the open state, it extends to the left beyond the left side of the seat. Similarly, in the retracted state, the right-side collision protection device is housed within the right side of the seat; in the open state, it extends to the right beyond the right side of the seat.

[0006] The seat is also provided with a left locking device for locking the left side collision protection device in a retracted working state and / or an open working state. The left locking device has an unlocked working state and a locked working state. When the left side collision protection device is in the retracted working state and the left locking device changes from the locked working state to the unlocked working state, the left side collision protection device changes from the retracted working state to the open working state.

[0007] The seat is also provided with a right locking device for locking the right side collision protection device in a retracted working state and / or an open working state. The right locking device has an unlocked working state and a locked working state. When the right side collision protection device is in the retracted working state and the right locking device changes from the locked working state to the unlocked working state, the right side collision protection device changes from the retracted working state to the open working state.

[0008] The seat is also provided with a pressure plate and a pulling mechanism driven by the pressure plate. The pressure plate has an unpressurized working state and a pressurized working state. During the process of the pressure plate changing from the unpressurized working state to the pressurized working state, the pulling mechanism pulls the left locking device and / or the right locking device from the locked working state to the unlocked working state.

[0009] Preferably, the left side collision protection device includes

[0010] The left cover plate, one end of which is pivotally connected to the left side of the seat via a left cover plate pivot shaft;

[0011] A left support rod, one end of which is pivotally connected to the other end of the left cover plate via a left support rod pivot shaft. The other end of the left support rod has a left guide pin, which is transverse to the length direction of the left support rod. The left guide pin is disposed in a left sliding groove on the left side of the seat and is slidably connected to the left sliding groove.

[0012] The left elastic element is disposed between the left cover plate and the left support rod. The left elastic element applies an elastic force to the left cover plate and the left support rod, so that the left side collision protection device has a tendency to switch from the retracted working state to the open working state.

[0013] The right-side collision protection device includes

[0014] The right cover plate, one end of which is pivotally connected to the right side of the seat via a right cover plate pivot shaft;

[0015] The right support rod has one end pivotally connected to the other end of the right cover plate via a right support rod pivot shaft. The other end of the right support rod has a right guide pin, which is transverse to the length direction of the right support rod. The right guide pin is located in the right sliding groove on the right side of the seat and is slidably connected to the right sliding groove.

[0016] The right elastic element is disposed between the right cover plate and the right support rod. The right elastic element applies an elastic force to the right cover plate and the right support rod, so that the right side collision protection device has a tendency to switch from the retracted working state to the open working state.

[0017] Furthermore, the left elastic element is sleeved on the left support rod shaft, one end of the left elastic element abuts against the left support rod, and the other end of the left elastic element abuts against the left cover plate;

[0018] The right elastic element is sleeved on the right support rod shaft, one end of the right elastic element abuts against the right support rod, and the other end of the right elastic element abuts against the right cover plate.

[0019] Furthermore, the left locking device includes

[0020] The left unlock button is pivotally connected to the left side of the seat via a left unlock button torsion shaft. One end of the left unlock button has a left boss, and the other end is connected to the pulling mechanism. The other end of the left cover plate has a left groove. When the left locking device is in the locked state, the left boss is inserted into the left groove. When the pulling mechanism pulls the other end of the left unlock button or the other end of the left unlock button is manually pressed, the left locking device switches from the locked state to the unlocked state, and the left boss disengages from the left groove.

[0021] A left button spring is disposed between the left side of the seat and the left unlock button. The left button spring applies an elastic force to the left unlock button, which causes the left locking device to tend to enter the locking working state.

[0022] The right locking device includes

[0023] The right unlock button is pivotally connected to the right side of the seat via a right unlock button torsion shaft. One end of the right unlock button has a right protrusion, and the other end is connected to the pulling mechanism. The other end of the right cover plate has a right groove. When the right locking device is in the locked state, the right protrusion is inserted into the right groove. When the pulling mechanism pulls the other end of the right unlock button or the other end of the right unlock button is manually pressed, the right locking device switches from the locked state to the unlocked state, and the right protrusion disengages from the right groove.

[0024] A right button spring is disposed between the right side of the seat and the right unlock button. The right button spring applies an elastic force to the right unlock button, which causes the right locking device to tend to enter the locked working state.

[0025] Preferably, the seat includes a seat body having a seat portion and a flexible fabric cover disposed on the seat portion, and the pressure plate is located between the upper surface of the seat portion and the flexible fabric cover.

[0026] Preferably, one end of the pressure plate is pivotally connected to the seat via a pressure plate pivot shaft. A pressure plate spring is provided between the pressure plate and the seat. When the pressure plate is in an unpressurized working state, the other end of the pressure plate is away from the upper surface of the seat. When the pressure plate is under pressure, the other end of the pressure plate is close to the upper surface of the seat. The pressure plate spring applies an elastic force to the pressure plate, and the elastic force causes the other end of the pressure plate to tend to move away from the upper surface of the seat.

[0027] Furthermore, a pressure plate drive rod is fixed on the pressure plate, the pressure plate drive rod passes downward through the seat portion, and the lower end of the pressure plate drive rod abuts against the pulling mechanism.

[0028] Furthermore, the pulling mechanism includes

[0029] The swing arm, the middle part of which is pivotally connected to the bottom of the seat part via a swing arm pivot, and one end of which abuts against the lower end of the pressure plate drive rod;

[0030] A traction cable, one end of which is connected to the other end of the swing rod, and the other end of which is connected to the left locking device and the right locking device respectively;

[0031] During the transition of the pressure plate from an unpressurized working state to a pressurized working state, the lower end of the pressure plate drive rod drives the swing rod to rotate around the swing rod axis, and the other end of the swing rod pulls the traction cable.

[0032] Furthermore, the other end of the traction cable is connected to the other end of the left unlock button and the other end of the right unlock button, respectively.

[0033] Furthermore, a fixing block is provided below the swing arm, the fixing block is fixed to the bottom of the seat, and a through hole is opened on the fixing block, through which the traction cable passes.

[0034] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0035] In this invention, when the pressure plate on the car safety seat is subjected to pressure, the closed side collision protection device will automatically open, improving the safety of the car safety seat. When the side collision protection device is not in use, it can also be opened and closed manually, making it easy to operate. Furthermore, the side collision protection device can be manually closed, reducing the size of the car safety seat. Attached Figure Description

[0036] Figure 1 This is a perspective view of a car safety seat in an embodiment of the present invention;

[0037] Figure 2 This is a side view of a car safety seat in an embodiment of the present invention;

[0038] Figure 3 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the pressure plate is in an unpressurized working state;

[0039] Figure 4 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the pressure plate is in a working state without pressure and a working state under pressure.

[0040] Figure 5 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the pressure plate is in a pressure-bearing working state;

[0041] Figure 6 This is a perspective view of the seat in an embodiment of the present invention, wherein the left side collision protection device is in a retracted working state;

[0042] Figure 7 This is a perspective view of the seat in an embodiment of the present invention, wherein the left side collision protection device is in the open working state;

[0043] Figure 8 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the left and right side collision protection devices are in the retracted working state;

[0044] Figure 9 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the left and right side collision protection devices are both in a retracted working state and an open working state.

[0045] Figure 10 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the left and right side collision protection devices are both in the open working state;

[0046] Figure 11This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the left side collision protection device is in the open working state and the right side collision protection device is in the retracted working state.

[0047] Figure 12 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the pressure spring is not compressed;

[0048] Figure 13 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the pressure spring is partially compressed;

[0049] Figure 14 This is a cross-sectional view of the seat in an embodiment of the present invention, wherein the pressure spring is fully compressed;

[0050] The components include: 1. Base; 2. Seat; 21. Seat section; 3. Left side collision protection device; 31. Left cover plate; 311. Left cover plate pivot; 32. Left support rod; 321. Left support rod pivot; 33. Left guide pin; 34. Left sliding groove; 35. Left elastic element; 4. Right side collision protection device; 41. Right cover plate; 411. Right cover plate pivot; 42. Right support rod; 421. Right support rod pivot; 43. Right guide pin; 44. Right sliding groove; 45. Right elastic element; 5. Left side of the seat; 6. Right side of the seat; 7. 71. Left locking device; 72. Left unlock button; 73. Left unlock button pivot; 74. Left button spring; 8. Right locking device; 81. Right unlock button; 82. Right boss; 83. Right groove; 84. Right button spring; 9. Pressure plate; 91. Pressure plate pivot; 92. Pressure plate spring; 93. Pressure plate drive rod; 10. Pulling mechanism; 101. Swing rod; 1011. Swing rod pivot; 102. Traction cable; 103. Fixing block; 104. Perforation. Detailed Implementation

[0051] The present invention will be further described below with reference to embodiments. However, the present invention is not limited to the following embodiments. The implementation conditions used in the embodiments can be further adjusted according to different requirements of specific applications, and the implementation conditions not specified are conventional conditions in the industry. The technical features involved in the various embodiments of the present invention can be combined with each other as long as they do not conflict with each other.

[0052] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0056] In the description of this invention, the directions such as "front," "rear," "left," "right," "up," and "down" are defined with reference to the direction observed by a child while riding in the vehicle, as shown in the attached diagram. Figure 2 In the figure, the right direction is "front", the left direction is "back", the upper direction is "up", the lower direction is "down", and the direction perpendicular to the viewpoint is "left" and "right". The above definitions of directions are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0057] like Figures 1 to 14As shown, the car safety seat in this embodiment includes a base 1 and a seat 2 mounted on the base 1. A left-side collision protection device 3 and a right-side collision protection device 4 are respectively provided on the left and right sides of the seat 2. The seat 2 also includes a left locking device 7, a right locking device 8, a pressure plate 9, and a pulling mechanism 10 driven by the pressure plate 9. The seat 2 includes a seat body with a seat portion 21 and a flexible fabric cover (not shown in the figure) mounted on the seat portion 21. The pressure plate 9 is located between the upper surface of the seat portion 21 and the flexible fabric cover.

[0058] The following provides a detailed description of the specific structure of a car safety seat and the connection relationships between its components:

[0059] like Figures 6 to 11 As shown, both the left-side collision protection device 3 and the right-side collision protection device 4 have a retracted working state and an open working state. When the left-side collision protection device 3 is in the retracted working state, it is housed within the left side 5 of the seat. When the left-side collision protection device 3 is in the open working state, it extends to the left beyond the left side 5 of the seat. Similarly, when the right-side collision protection device 4 is in the retracted working state, it is housed within the right side 6 of the seat. When the right-side collision protection device 4 is in the open working state, it extends to the right beyond the right side 6 of the seat.

[0060] The left locking device 7 is used to lock the left side collision protection device in either a retracted or open working state. The left locking device 7 has both an unlocked and a locked working state. When the left side collision protection device 3 is in the retracted working state and the left locking device 7 moves from the locked working state to the unlocked working state, the left side collision protection device 3 transitions from the retracted working state to the open working state. The right locking device 8 is used to lock the right side collision protection device 4 in either a retracted or open working state. The right locking device 8 has both an unlocked and a locked working state. When the right side collision protection device 4 is in the retracted working state and the right locking device 8 moves from the locked working state to the unlocked working state, the right side collision protection device 4 transitions from the retracted working state to the open working state.

[0061] like Figures 3 to 5As shown, the pressure plate 9 has an unpressurized working state and a pressurized working state. When a child uses the child seat, their buttocks press against the pressure plate 9, and the pressure plate 9 changes from the unpressurized working state to the pressurized working state. This causes the pulling mechanism 10 to pull the left locking device 7 and the right locking device 8 from the locked working state to the unlocked working state. The pulling mechanism 10 can also pull the left locking device 7 and the right locking device 8 from the locked working state to the unlocked working state at the same time, thereby causing the left side collision protection device 3 or the right side collision protection device 4 to change from the folded working state to the open working state, thus protecting the child in the seat.

[0062] Specifically, the left side collision protection device 3 includes a left cover plate 31, a left support rod 32, and a left elastic element 35. One end of the left cover plate 31 is pivotally connected to the left side of the seat 5 via a left cover plate pivot 311. One end of the left support rod 32 is pivotally connected to the other end of the left cover plate 31 via a left support rod pivot 311. The other end of the left support rod 32 has a left guide pin 33, which is transverse to the length of the left support rod 32. The left guide pin 33 is disposed in a left sliding groove 34 within the left side of the seat 5 and is slidably connected to the left sliding groove 34. The left elastic element 35 is disposed between the left cover plate 31 and the left support rod 32. The left elastic element 35 applies an elastic force to the left cover plate 31 and the left support rod 32, causing the left side collision protection device 3 to tend to switch from a retracted working state to an open working state. The right side collision protection device 4 includes a right cover plate 41, a right support rod 42, and a right elastic element 45. One end of the right cover plate 41 is pivotally connected to the right side surface 6 of the seat via a right cover plate pivot 411. One end of the right support rod 42 is pivotally connected to the other end of the right cover plate 41 via a right support rod pivot 421. The other end of the right support rod 42 has a right guide pin 43, which is transverse to the length direction of the right support rod 42. The right guide pin 43 is disposed in a right sliding groove 44 within the right side surface 6 of the seat, and is slidably connected to the right sliding groove 44. The right elastic element 45 is disposed between the right cover plate 41 and the right support rod 42, and applies an elastic force to the right cover plate 41 and the right support rod 42, so that the right side collision protection device 4 has a tendency to switch from a retracted working state to an open working state. In this embodiment, the left elastic element 35 and the right elastic element 45 are preferably torsion springs. The left elastic element 35 is sleeved on the left support rod shaft 321, one end of the left elastic element 35 abuts against the left support rod 32, and the other end of the left elastic element 35 abuts against the left cover plate 31; the right elastic element 45 is sleeved on the right support rod shaft 421, one end of the right elastic element 45 abuts against the right support rod 42, and the other end of the right elastic element 45 abuts against the right cover plate 41.

[0063] Specifically, such as Figures 8 to 11As shown, the left locking device 7 includes a left unlock button 71 and a left button spring 74. The middle part of the left unlock button 71 is pivotally connected to the left side surface 5 of the seat via a left unlock button torsion shaft 711. One end of the left unlock button 71 has a left boss 72, and the other end of the left unlock button 71 is connected to the pulling mechanism 10. The other end of the left cover plate 31 has a left groove 73. When the left locking device 7 is in the locked working state, the left boss 72 is inserted into the left groove 73. When the pulling mechanism 10 pulls the other end of the left unlock button 71 or the other end of the left unlock button 71 is manually pressed, the left locking device 7 switches from the locked working state to the unlocked working state, and the left boss 72 also disengages from the left groove 73. The left button spring 74 is disposed in the left side surface 5 of the seat between itself and the left unlock button 71. The left button spring 74 applies an elastic force to the left unlock button 71, which causes the left locking device 7 to tend to enter the locked working state. The right locking device 8 includes a right unlock button 81 and a right button spring 84. The middle part of the right unlock button 81 is pivotally connected to the right side surface 6 of the seat via a right unlock button torsion shaft 811. One end of the right unlock button 81 has a right boss 82, and the other end of the right unlock button 81 is connected to the pulling mechanism 10. The other end of the right cover plate 41 has a right groove 82. When the right locking device 8 is in the locked working state, the right boss 82 is inserted into the right groove 83. When the pulling mechanism 10 pulls the other end of the right unlock button 81 or the other end of the right unlock button 81 is manually pressed, the right locking device 8 switches from the locked working state to the unlocked working state, and the right boss 82 also disengages from the right groove 83. The right button spring 84 is disposed in the right side surface 6 of the seat between the right unlock button 81 and the right button spring 84. The right button spring 84 applies an elastic force to the right unlock button 81, which causes the right locking device 8 to tend to enter the locked working state.

[0064] like Figures 12 to 14 As shown, one end of the pressure plate 9 is pivotally connected to the seat portion 21 via a pressure plate pivot shaft 91. A pressure plate spring 92 is provided between the pressure plate 9 and the seat portion 21. When the pressure plate 9 is in an unpressurized working state, the other end of the pressure plate 9 is away from the upper surface of the seat portion 21. When the pressure plate 9 is under pressure, the other end of the pressure plate 9 is close to the upper surface of the seat portion 21. The pressure plate spring 92 applies an elastic force to the pressure plate 9, which causes the other end of the pressure plate 9 to tend to move away from the upper surface of the seat portion 21. A pressure plate drive rod 93 is also fixed on the pressure plate 9. The pressure plate drive rod 93 passes downward through the seat portion 21, and the lower end of the pressure plate drive rod 93 abuts against the pulling mechanism 10.

[0065] The pulling mechanism 10 specifically includes a swing arm 101, a traction cable 102, and a fixing block 103. The middle part of the swing arm 101 is pivotally connected to the bottom of the seat portion 21 via a swing arm pivot 1011. One end of the swing arm 101 abuts against the lower end of the pressure plate drive rod 93. One end of the traction cable 102 is connected to the other end of the swing arm 101. The other end of the traction cable 102 is connected to the left locking device 7 and the right locking device 8, respectively. In some other embodiments, the other end of the traction cable 102 is connected to the other end of the left unlocking button 71 and the other end of the right unlocking button 81, respectively. A fixing block 103 is provided below the swing arm 101 and is fixed to the bottom of the seat portion 21. A through hole 104 is opened on the fixing block 103, through which the traction cable 102 passes. Figures 12 to 14 As shown, during the transition of the pressure plate 9 from an unpressurized working state to a pressurized working state, the lower end of the pressure plate drive rod 93 drives the swing rod 101 to rotate around the swing rod shaft 1011. The other end of the swing rod 101 pulls the traction cable 102, causing the traction cable 102 to be stretched, as shown. Figure 13 As shown; when the pressure plate 9 is compressed to coincide with the seat portion 21 (i.e., the pressure plate spring 92 is fully compressed), the pressure plate drive rod 93 disengages from the fixing block 103, as... Figure 14 As shown.

[0066] In this embodiment, when the pressure plate is in an unpressurized working state (i.e., the child is not using a car safety seat) and a pressurized working state (i.e., the child is using a car safety seat), both the left side collision protection device 3 and the right side collision protection device 4 can be automatically opened. The user can also manually open the left side collision protection device 3 and the right side collision protection device 4 by pressing the left unlock button 71 and the right unlock button 81. Any side collision protection device that is not needed can be manually closed.

[0067] In summary, in this invention, when the pressure plate on the car safety seat is subjected to pressure, the closed side collision protection device will automatically open, improving the safety of the car safety seat. When the side collision protection device is not in use, it can also be manually opened and closed, making it convenient to operate and reducing the size of the car safety seat.

[0068] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A car safety seat, comprising a base and a seat disposed on the base, wherein a left-side collision protection device is provided on the left side of the seat, the left-side collision protection device having a retracted working state and an open working state, wherein in the retracted working state the left-side collision protection device is housed within the left side of the seat, and in the open working state the left-side collision protection device extends to the left beyond the left side of the seat; The seat is also provided with a left locking device for locking the left side collision protection device in a retracted working state and / or an open working state. The left locking device has an unlocked working state and a locked working state. When the left side collision protection device is in the retracted working state and the left locking device changes from the locked working state to the unlocked working state, the left side collision protection device changes from the retracted working state to the open working state. Its features are: The left locking device includes a left cover plate and a left unlock button connected to the left side of the seat. One end of the left cover plate is pivotally connected to the left side of the seat via a left cover plate pivot. The left unlock button has a left protrusion, and the left cover plate has a left groove. When the left locking device is in the locked working state, the left protrusion is inserted into the left groove. The seat is also provided with a pressure plate and a pulling mechanism driven by the pressure plate. The pulling mechanism is connected to the left unlock button. The pressure plate has an unpressurized working state and a pressurized working state. During the process of the pressure plate changing from the unpressurized working state to the pressurized working state, the pulling mechanism pulls the left unlock button to disengage from the left groove, thereby changing from the locked working state to the unlocked working state. The left side collision protection device changes from the retracted working state to the open working state. The left-side collision protection device also includes: A left support rod, one end of which is pivotally connected to the other end of the left cover plate via a left support rod pivot shaft. The other end of the left support rod has a left guide pin, which is transverse to the length direction of the left support rod. The left guide pin is disposed in a left sliding groove on the left side of the seat and is slidably connected to the left sliding groove. The left elastic element is disposed between the left cover plate and the left support rod. The left elastic element applies an elastic force to the left cover plate and the left support rod, so that the left side collision protection device has a tendency to switch from the retracted working state to the open working state.

2. The car safety seat according to claim 1, characterized in that: The left elastic element is sleeved on the left support rod shaft, one end of the left elastic element abuts against the left support rod, and the other end of the left elastic element abuts against the left cover plate; The middle part of the left unlock button is pivotally connected to the left side of the seat via a left unlock button torsion shaft. The left boss is located at one end of the left unlock button, and the other end of the left unlock button is connected to the pulling mechanism. The other end of the left cover plate has the left groove. When the other end of the left unlock button is manually pressed, the left locking device switches from the locked working state to the unlocked working state, and the left boss also disengages from the left groove. The left locking device also includes a left button spring, which is disposed between the left side of the seat and the left unlock button. The left button spring applies an elastic force to the left unlock button, which causes the left locking device to tend to enter the locked working state.

3. The car safety seat according to claim 1, characterized in that: The seat includes a seat body having a seat portion and a flexible fabric cover disposed on the seat portion, and the pressure plate is located between the upper surface of the seat portion and the flexible fabric cover; One end of the pressure plate is pivotally connected to the seat via a pressure plate pivot shaft. A pressure plate spring is provided between the pressure plate and the seat. When the pressure plate is in an unpressurized working state, the other end of the pressure plate is away from the upper surface of the seat. When the pressure plate is under pressure, the other end of the pressure plate is close to the upper surface of the seat. The pressure plate spring applies an elastic force to the pressure plate, and the elastic force causes the other end of the pressure plate to tend to move away from the upper surface of the seat.

4. The car safety seat according to claim 3, characterized in that: A pressure plate drive rod is fixed on the pressure plate, and the pressure plate drive rod passes downward through the seat part. The lower end of the pressure plate drive rod abuts against the pulling mechanism.

5. The car safety seat according to claim 4, characterized in that: The pulling mechanism includes: The swing arm, the middle part of which is pivotally connected to the bottom of the seat part via a swing arm pivot, and one end of which abuts against the lower end of the pressure plate drive rod; A traction cable, one end of which is connected to the other end of the swing arm, and the other end of which is connected to the left unlock button; During the transition of the pressure plate from an unpressurized working state to a pressurized working state, the lower end of the pressure plate drive rod drives the swing rod to rotate around the swing rod axis, and the other end of the swing rod pulls the traction cable. A fixing block is provided below the swing arm, and the fixing block is fixed to the bottom of the seat. A through hole is opened on the fixing block, and the traction cable passes through the through hole.

6. The car safety seat according to any one of claims 1 to 5, characterized in that: The right side of the seat is provided with a right side collision protection device. The right side collision protection device has a retracted working state and an open working state. When the right side collision protection device is in the retracted working state, the right side collision protection device is stored inside the right side of the seat. When the right side collision protection device is in the open working state, the right side collision protection device extends to the right side of the right side of the seat. The seat is also provided with a right locking device for locking the right side collision protection device in a retracted working state and / or an open working state. The right locking device has an unlocked working state and a locked working state. When the right side collision protection device is in the retracted working state and the right locking device changes from the locked working state to the unlocked working state, the right side collision protection device changes from the retracted working state to the open working state. The right locking device includes a right cover plate and a right unlock button connected to the right side of the seat. One end of the right cover plate is pivotally connected to the right side of the seat via a right cover plate pivot. The right unlock button has a right protrusion, and the right cover plate has a right groove. When the right locking device is in the locked working state, the right protrusion is inserted into the right groove. The right unlock button is connected to the pull mechanism so that it can be pulled out of the right groove by the pull mechanism or manually pressed out of the right groove; Specifically, the left-side collision protection device and the right-side collision protection device are both in the open working state; or the left-side collision protection device is in the open working state and the right-side collision protection device is in the retracted working state; or the left-side collision protection device is in the retracted working state and the right-side collision protection device is in the open working state.

7. A car safety seat, comprising a base and a seat disposed on the base, wherein a right-side collision protection device is provided on the right side of the seat, the right-side collision protection device having a retracted working state and an open working state, wherein in the retracted working state the right-side collision protection device is housed within the right side of the seat, and in the open working state the right-side collision protection device extends to the right beyond the right side of the seat. The seat is also provided with a right locking device for locking the right side collision protection device in a retracted working state and / or an open working state. The right locking device has an unlocked working state and a locked working state. When the right side collision protection device is in the retracted working state and the right locking device changes from the locked working state to the unlocked working state, the right side collision protection device changes from the retracted working state to the open working state. Its features are: The right locking device includes a right cover plate and a right unlock button connected to the right side of the seat. One end of the right cover plate is pivotally connected to the right side of the seat via a right cover plate pivot. The right unlock button has a right protrusion, and the right cover plate has a right groove. When the right locking device is in the locked working state, the right protrusion is inserted into the right groove. The seat is also provided with a pressure plate and a pulling mechanism driven by the pressure plate. The pulling mechanism is connected to the right unlock button. The pressure plate has an unpressurized working state and a pressurized working state. During the process of the pressure plate changing from the unpressurized working state to the pressurized working state, the pulling mechanism pulls the right unlock button to disengage from the right groove, thereby changing from the locked working state to the unlocked working state. The right side collision protection device changes from the retracted working state to the open working state. The right-side collision protection device also includes: The right support rod has one end pivotally connected to the other end of the right cover plate via a right support rod pivot shaft. The other end of the right support rod has a right guide pin, which is transverse to the length direction of the right support rod. The right guide pin is located in the right sliding groove on the right side of the seat and is slidably connected to the right sliding groove. The right elastic element is disposed between the right cover plate and the right support rod. The right elastic element applies an elastic force to the right cover plate and the right support rod, so that the right side collision protection device has a tendency to switch from the retracted working state to the open working state.

8. The car safety seat according to claim 7, characterized in that: The right elastic element is sleeved on the right support rod shaft, one end of the right elastic element abuts against the right support rod, and the other end of the right elastic element abuts against the right cover plate; The middle part of the right unlock button is pivotally connected to the right side of the seat via a right unlock button torsion shaft. The right boss is located at one end of the right unlock button, and the other end of the right unlock button is connected to the pulling mechanism. The other end of the right cover plate has the right groove. When the other end of the right unlock button is manually pressed, the right locking device switches from the locked working state to the unlocked working state, and the right boss also disengages from the right groove. The right locking device also includes a right button spring, which is disposed between the right side of the seat and the right unlock button. The right button spring applies an elastic force to the right unlock button, which causes the right locking device to tend to enter the locked working state.

9. The car safety seat according to claim 7, characterized in that: The seat includes a seat body having a seat portion and a flexible fabric cover disposed on the seat portion, and the pressure plate is located between the upper surface of the seat portion and the flexible fabric cover; One end of the pressure plate is pivotally connected to the seat via a pressure plate pivot shaft. A pressure plate spring is provided between the pressure plate and the seat. When the pressure plate is in an unpressurized working state, the other end of the pressure plate is away from the upper surface of the seat. When the pressure plate is under pressure, the other end of the pressure plate is close to the upper surface of the seat. The pressure plate spring applies an elastic force to the pressure plate, and the elastic force causes the other end of the pressure plate to tend to move away from the upper surface of the seat.

10. The car safety seat according to claim 9, characterized in that: A pressure plate drive rod is fixed on the pressure plate, the pressure plate drive rod passes downward through the seat part, and the lower end of the pressure plate drive rod abuts against the pulling mechanism; The pulling mechanism includes: The swing arm, the middle part of which is pivotally connected to the bottom of the seat part via a swing arm pivot, and one end of which abuts against the lower end of the pressure plate drive rod; A traction cable, one end of which is connected to the other end of the swing arm, and the other end of which is connected to the right unlock button; During the transition of the pressure plate from an unpressurized working state to a pressurized working state, the lower end of the pressure plate drive rod drives the swing rod to rotate around the swing rod axis, and the other end of the swing rod pulls the traction cable. A fixing block is provided below the swing arm, and the fixing block is fixed to the bottom of the seat. A through hole is opened on the fixing block, and the traction cable passes through the through hole.

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