Automobile safety seat

Abstract

The invention relates to an automobile safety seat which comprises a base and a seat body arranged on the base, a left side face collision protection device is arranged on the left side face of the seat body, a pressing plate and a pulling mechanism driven by the pressing plate are further arranged on the seat body, and the pressing plate has a non-pressure-bearing working state and a pressure-bearing working state. In the process that the pressing plate is converted from the non-pressure working state to the pressure-bearing working state, the pulling mechanism pulls the left locking device to enter the unlocking working state from the locking working state. When the pressing plate on the automobile safety seat is pressed, the side collision protection device in the closed state can be automatically opened, the safety of the automobile safety seat is improved, the side collision protection device can be manually opened and closed when not used, operation is convenient, and the size of the automobile safety seat is reduced.

Description

Technical Field

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

[0002] Car safety seats are usually installed in cars and can effectively improve the safety of children in cars. One type of car safety seats in the prior art is often equipped with side impact protection devices to prevent children from being injured by side impact in the event of an accident. However, considering the easy accidental touch during transportation and the volume during transportation, the side impact protection state is mostly in the closed state when not in use. If the parents are negligent or lack safety awareness when the child is riding, and forget or deliberately fail to activate the side impact protection device, the side impact protection device cannot play a protective role for the child, resulting in low safety of the car safety seat. Summary of the invention

[0003] The purpose of the present invention is to provide an improved car safety seat. When a pressure plate on the car safety seat is subjected to pressure, a side impact protection device will automatically open, thereby improving the safety of the car safety seat.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A car safety seat comprises a base and a seat arranged on the base, wherein the left and right sides of the seat are respectively provided with a left side collision protection device and a right side collision protection device, wherein the left side collision protection device and the right side collision protection device both have a folded working state and an opened working state, wherein when the left side collision protection device is in the folded working state, the left side collision protection device is stored in the left side of the seat, and when the left side collision protection device is in the opened working state, the left side collision protection device extends out of the left side of the seat in the left direction; when the right side collision protection device is in the folded working state, the right side collision protection device is stored in the right side of the seat, and when the right side collision protection device is in the opened working state, the right side collision protection device extends out of the right side of the seat in the right direction;

[0006] The seat is also provided with a left locking device for locking the left side collision protection device in a folded working state and / or an open working state, the left locking device having an unlocked working state and a locked working state, when the left side collision protection device is in the folded working state and the left locking device enters the unlocked working state from the locked working state, the left side collision protection device is switched from the folded 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 folded working state and / or an open working state, the right locking device having an unlocked working state and a locked working state, when the right side collision protection device is in the folded working state and the right locking device enters the unlocked working state from the locked working state, the right side collision protection device is switched from the folded 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 a non-pressure working state and a pressure-bearing working state. During the process of the pressure plate switching from the non-pressure working state to the pressure-bearing 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 comprises:

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

[0011] A left support rod, one end of the left support rod is pivotally connected to the other end of the left cover plate through a left support rod rotating shaft, the other end of the left support rod has a left guide pin, the left guide pin is transverse to the length direction of the left support rod, the left guide pin is arranged in a left sliding groove in the left side of the seat, and the left guide pin is slidably connected to the left sliding groove;

[0012] A left elastic member, the left elastic member is arranged between the left cover plate and the left support rod, the left elastic member 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 a folded working state to an open working state;

[0013] The right side collision protection device comprises

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

[0015] A right support rod, one end of the right support rod is pivotally connected to the other end of the right cover plate through a right support rod rotating shaft, the other end of the right support rod has a right guide pin, the right guide pin is transverse to the length direction of the right support rod, the right guide pin is arranged in a right sliding groove in the right side surface of the seat, and the right guide pin is slidably connected to the right sliding groove;

[0016] A right elastic member, wherein the right elastic member is arranged between the right cover plate and the right support rod, and the right elastic member 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 a folded working state to an open working state.

[0017] Further, the left elastic member is sleeved on the left support rod shaft, one end of the left elastic member is pressed against the left support rod, and the other end of the left elastic member is pressed against the left cover plate;

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

[0019] Furthermore, the left locking device comprises

[0020] A left unlocking button, wherein the middle portion of the left unlocking button is pivotally connected to the left side surface of the seat through a left unlocking button torsion shaft, one end portion of the left unlocking button is provided with a left boss, and the other end portion of the left unlocking button is connected to the pulling mechanism; the other end portion of the left cover plate is provided with a left groove, and when the left locking device is in a locked working state, the left boss is inserted into the left groove; when the pulling mechanism pulls the other end portion of the left unlocking button or the other end portion of the left unlocking button is manually pressed, the left locking device is switched from the locked working state to the unlocked working state, and the left boss is also disengaged from the left groove;

[0021] A left button spring, the left button spring being arranged between the left side surface of the seat and the left unlocking button, the left button spring exerting an elastic force on the left unlocking button, the elastic force causing the left locking device to tend to enter a locking working state;

[0022] The right locking device comprises

[0023] A right unlocking button, wherein the middle portion of the right unlocking button is pivotally connected to the right side surface of the seat through a right unlocking button torsion shaft, one end portion of the right unlocking button is provided with a right boss, and the other end portion of the right unlocking button is connected to the pulling mechanism; the other end portion of the right cover plate is provided with a right groove, and when the right locking device is in a locked working state, the right boss is inserted into the right groove; when the pulling mechanism pulls the other end portion of the right unlocking button or the other end portion of the right unlocking button is manually pressed, the right locking device is switched from the locked working state to the unlocked working state, and the right boss is also disengaged from the right groove;

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

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

[0026] Preferably, one end of the pressure plate is pivotally connected to the seat portion via a pressure plate shaft, and a pressure plate spring is arranged between the pressure plate and the seat portion; when the pressure plate is in a non-pressure working state, the other end of the pressure plate is away from the upper surface of the seat portion, and when the pressure plate is in a pressure-bearing working state, the other end of the pressure plate is close to the upper surface of the seat portion; the pressure plate spring applies an elastic force to the pressure plate, and the elastic force makes the other end of the pressure plate tend to move away from the upper surface of the seat portion.

[0027] Furthermore, a pressure plate driving rod is fixed on the pressure plate, and the pressure plate driving rod passes downward through the seat portion, and the lower end portion of the pressure plate driving rod is in conflict with the pulling mechanism.

[0028] Furthermore, the pulling mechanism includes

[0029] A swing rod, wherein the middle portion of the swing rod is pivotally connected to the bottom of the seat portion via a swing rod shaft, and one end of the swing rod is in conflict with the lower end of the pressure plate driving rod;

[0030] A traction rope, 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] When the pressure plate is converted from a non-pressure working state to a pressure working state, the lower end of the pressure plate driving rod drives the swing rod to rotate around the swing rod shaft, and the other end of the swing rod pulls the traction rope.

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

[0033] Furthermore, a fixing block is arranged below the swing rod, the fixing block is fixed to the bottom of the seat portion, a through hole is formed on the fixing block, and the traction rope passes through the through hole.

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

[0035] In the present invention, when the pressure plate on the car safety seat is subjected to pressure, the side impact protection device in a closed state will automatically open, thereby improving the safety of the car safety seat. When the side impact protection device is not in use, it can also be opened and closed manually, which is easy to operate. In addition, the side impact protection device can be closed manually, thereby reducing the volume of the car safety seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional diagram of a car safety seat according to an embodiment of the present invention;

[0037] Figure 2 A side view of a car safety seat according to an embodiment of the present invention;

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

[0039] Figure 4 is a cross-sectional view of a seat in an embodiment of the present invention, wherein the pressure plate is between a non-pressure working state and a pressure-bearing working state;

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

[0041] Figure 6 is a three-dimensional diagram of a seat in an embodiment of the present invention, wherein the left side collision protection device is in a folded working state;

[0042] Figure 7 is a three-dimensional diagram of a seat in an embodiment of the present invention, wherein the left side collision protection device is in an open working state;

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

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

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

[0046] Fig.11is a cross-sectional view of a seat in an embodiment of the present invention, wherein the left side impact protection device is in an open working state, and the right side impact protection device is in a folded working state;

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

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

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

[0050] Among them, 1, base; 2, seat; 21, seat part; 3, left side collision protection device; 31, left cover plate; 311, left cover plate shaft; 32, left support rod; 321, left support rod shaft; 33, left guide pin; 34, left sliding groove; 35, left elastic member; 4, right side collision protection device; 41, right cover plate; 411, right cover plate shaft; 42, right support rod; 421, right support rod shaft; 43, right guide pin; 44, right sliding groove; 45, right elastic member; 5, left side of seat; 6, right side of seat; 7, Left locking device; 71, left unlocking button; 711, left unlocking button shaft; 72, left boss; 73, left groove; 74, left button spring; 8, right locking device; 81, right unlocking button; 811, right unlocking button shaft; 82, right boss; 83, right groove; 84, right button spring; 9, pressure plate; 91, pressure plate shaft; 92, pressure plate spring; 93, pressure plate driving rod; 10, pulling mechanism; 101, swing rod; 1011, swing rod shaft; 102, traction rope; 103, fixing block; 104, perforation. DETAILED DESCRIPTION

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

[0052] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

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

[0054] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0056] In the description of the present invention, the directions involved such as "front", "rear", "left", "right", "up", and "down" are all defined with reference to the directions observed by the child when riding. 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 directions perpendicular to the viewing angle in the figure are “left” and “right”. The definitions of the above directions are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation 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 arranged on the base 1. The left and right sides of the seat 2 are respectively provided with a left side collision protection device 3 and a right side collision protection device 4, and the seat 2 is also provided with 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 having a seat portion 21 and a flexible cloth cover (not shown in the figure) arranged on the seat portion 21, and the pressure plate 9 is located between the upper surface of the seat portion 21 and the flexible cloth cover.

[0058] The following is a detailed introduction to the specific structure of the car safety seat and the connection relationship of each component:

[0059] like Figures 6 to 11 As shown, both the left side impact protection device 3 and the right side impact protection device 4 have a folded working state and an opened working state. When the left side impact protection device 3 is in the folded working state, the left side impact protection device 3 is stored in the left side 5 of the seat. When the left side impact protection device 3 is in the opened working state, the left side impact protection device 3 extends to the left direction and out of the left side 5 of the seat. When the right side impact protection device 4 is in the folded working state, the right side impact protection device 4 is stored in the right side 6 of the seat. When the right side impact protection device 4 is in the opened working state, the right side impact protection device 4 extends to the right direction and out of the right side 6 of the seat.

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

[0061] like Figures 3 to 5As shown, the pressure plate 9 has a non-pressure working state and a pressure-bearing working state. When a child uses the child seat, the buttocks press the pressure plate 9, and the pressure plate 9 is converted from the non-pressure working state to the pressure-bearing working state, so that the pulling mechanism 10 pulls 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 simultaneously pull the left locking device 7 and the right locking device 8 from the locked working state to the unlocked working state, so that the left side impact protection device 3 or the right side impact protection device 4 is converted from the folded working state to the open working state, which protects the child on 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 member 35, wherein one end of the left cover plate 31 is pivotally connected to the left side 5 of the seat through a left cover plate shaft 311; one end of the left support rod 32 is pivotally connected to the other end of the left cover plate 31 through a left support rod shaft 311, and the other end of the left support rod 32 has a left guide pin 33, the left guide pin 33 is transverse to the length direction of the left support rod 32, the left guide pin 33 is arranged in a left sliding groove 34 in the left side 5 of the seat, and the left guide pin 33 is slidingly connected to the left sliding groove 34; the left elastic member 35 is arranged between the left cover plate 31 and the left support rod 32, and the left elastic member 35 applies an elastic force to the left cover plate 31 and the left support rod 32, so that the left side collision protection device 3 has a tendency to switch from a folded 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 member 45, wherein one end of the right cover plate 41 is pivotally connected to the right side 6 of the seat through a right cover plate shaft 411; one end of the right support rod 42 is pivotally connected to the other end of the right cover plate 41 through a right support rod shaft 421, and 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, and the right guide pin 43 is arranged in a right sliding groove 44 in the right side 6 of the seat, and the right guide pin 43 is slidingly connected to the right sliding groove 44; the right elastic member 45 is arranged between the right cover plate 41 and the right support rod 42, and the right elastic member 45 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 folded working state to an open working state. The left elastic member 35 and the right elastic member 45 in this embodiment are preferably torsion springs. The left elastic member 35 is sleeved on the left support rod shaft 321, one end of the left elastic member 35 is pressed against the left support rod 32, and the other end of the left elastic member 35 is pressed against the left cover plate 31; the right elastic member 45 is sleeved on the right support rod shaft 421, one end of the right elastic member 45 is pressed against the right support rod 42, and the other end of the right elastic member 45 is pressed against the right cover plate 41.

[0063] Specifically, Figures 8 to 11As shown, the left locking device 7 includes a left unlocking button 71 and a left button spring 74, wherein the middle portion of the left unlocking button 71 is pivotally connected to the left side surface 5 of the seat through the left unlocking button torsion shaft 711, one end of the left unlocking button 71 has a left boss 72, and the other end of the left unlocking button 71 is connected to the pulling mechanism 10; the other end of the left cover plate 31 has a left groove 73, and 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 unlocking button 71 or manually presses the other end of the left unlocking button 71, the left locking device 7 is converted 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 arranged in the left side surface 5 of the seat and between the left unlocking button 71, and the left button spring 74 applies an elastic force to the left unlocking button 71, and the elastic force causes the left locking device 7 to tend to enter the locked working state. state; the right locking device 8 includes a right unlocking button 81 and a right button spring 84, wherein the middle part of the right unlocking button 81 is pivotally connected to the right side surface 6 of the seat through the right unlocking button torsion shaft 811, one end of the right unlocking button 81 has a right boss 82, and the other end of the right unlocking button 81 is connected to the pulling mechanism 10; the other end of the right cover plate 41 has a right groove 82, and 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 unlocking button 81 or manually presses the other end of the right unlocking button 81, the right locking device 8 is converted 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 arranged in the right side surface 6 of the seat and between the right unlocking button 81, and the right button spring 84 applies an elastic force to the right unlocking button 81, and the elastic force causes the right locking device 8 to tend to enter the locked working state.

[0064] like Figure 12 to Figure 14 As shown, one end of the pressing plate 9 is pivotally connected to the seat portion 21 through a pressing plate rotating shaft 91, and a pressing plate spring 92 is arranged between the pressing plate 9 and the seat portion 21. When the pressing plate 9 is in a non-pressure working state, the other end of the pressing plate 9 is away from the upper surface of the seat portion 21, and when the pressing plate 9 is in a pressure-bearing working state, the other end of the pressing plate 9 is close to the upper surface of the seat portion 21; the pressing plate spring 92 applies an elastic force to the pressing plate 9, and the elastic force makes the other end of the pressing plate 9 have a tendency to be away from the upper surface of the seat portion 21. A pressing plate driving rod 93 is also fixed to the pressing plate 9, and the pressing plate driving rod 93 passes downward through the seat portion 21, and the lower end of the pressing plate driving rod 93 conflicts with the pulling mechanism 10.

[0065] The pulling mechanism 10 specifically includes a swing rod 101, a traction rope 102 and a fixed block 103, wherein the middle portion of the swing rod 101 is pivotally connected to the bottom of the seat portion 21 via a swing rod shaft 1011, and one end of the swing rod 101 is in conflict with the lower end of the pressure plate driving rod 93; one end of the traction rope 102 is connected to the other end of the swing rod 101, and the other end of the traction rope 102 is respectively connected to the left locking device 7 and the right locking device 8. In some other embodiments, the other end of the traction rope 102 is respectively connected to the other end of the left unlocking button 71 and the other end of the right unlocking button 81; a fixed block 103 is provided below the swing rod 101, and the fixed block 103 is fixed to the bottom of the seat portion 21, and a through hole 104 is opened on the fixed block 103, and the traction rope 102 passes through the through hole 104. Figure 12 to Figure 14 As shown in FIG. 1 , when the pressure plate 9 is switched from a non-pressure working state to a pressure-bearing working state, the lower end of the pressure plate driving rod 93 drives the swing rod 101 to rotate around the swing rod rotating shaft 1011, and the other end of the swing rod 101 pulls the traction rope 102, so that the traction rope 102 is stretched, as shown in FIG. Fig.13 When the pressure plate 9 is compressed to coincide with the seat portion 21 (ie, the pressure plate spring 92 is completely compressed), the pressure plate drive rod 93 and the fixed block 103 are disengaged, as shown Fig.14 shown.

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

[0067] In summary, in the present invention, when the pressure plate on the car safety seat is subjected to pressure, the side impact protection device in a closed state will automatically open, thereby improving the safety of the car safety seat. When the side impact protection device is not in use, it can also be manually opened and closed, which is easy to operate and reduces 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 their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A car safety seat, comprising a base, a seat arranged on the base, a left side collision protection device being arranged on the left side of the seat, the left side collision protection device having a folded working state and an opened working state, when the left side collision protection device is in the folded working state, the left side collision protection device is stored in the left side of the seat, and when the left side collision protection device is in the opened working state, the left side collision protection device extends out of the left side of the seat in the left direction; The seat is also provided with a left locking device for locking the left side collision protection device in a folded working state and / or an open working state, the left locking device having an unlocked working state and a locked working state, when the left side collision protection device is in the folded working state and the left locking device enters the unlocked working state from the locked working state, the left side collision protection device is switched from the folded working state to the open working state; Features: The left locking device comprises a left cover plate connected to the left side of the seat and a left unlocking button, wherein one end of the left cover plate is pivotally connected to the left side of the seat through a left cover plate rotating shaft, the left unlocking button has a left boss, the left cover plate has a left groove, and the left boss is inserted into the left groove when the left locking device is in a locked working state; 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 unlocking button, the pressure plate has a non-pressure working state and a pressure-bearing working state, in the process of the pressure plate switching from the non-pressure working state to the pressure-bearing working state, the pulling mechanism pulls the left unlocking button to disengage from the left groove, thereby entering the unlocking working state from the locked working state, and the left side collision protection device switches from the folded working state to the open working state.

2. The car safety seat according to claim 1, characterized in that: The left side collision protection device further comprises: A left support rod, one end of the left support rod is pivotally connected to the other end of the left cover plate through a left support rod rotating shaft, the other end of the left support rod has a left guide pin, the left guide pin is transverse to the length direction of the left support rod, the left guide pin is arranged in a left sliding groove in the left side of the seat, and the left guide pin is slidably connected to the left sliding groove; A left elastic member, wherein the left elastic member is disposed between the left cover plate and the left support rod, and wherein the left elastic member 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 a folded working state to an open working state.

3. The car safety seat according to claim 2, characterized in that: The left elastic member is sleeved on the left support rod shaft, one end of the left elastic member is pressed against the left support rod, and the other end of the left elastic member is pressed against the left cover plate; The middle part of the left unlocking button is pivotally connected to the left side of the seat through the left unlocking button torsion shaft, the left boss is located at one end of the left unlocking button, and the other end of the left unlocking button is connected to the pulling mechanism; the other end of the left cover plate has the left groove, and when the other end of the left unlocking button is manually pressed, the left locking device is switched from the locking working state to the unlocking working state, and the left boss is also separated from the left groove; The left locking device also includes a left button spring, which is arranged between the left side surface of the seat and the left unlocking button. The left button spring applies an elastic force to the left unlocking button, and the elastic force causes the left locking device to tend to enter a locked working state.

4. The car safety seat according to claim 1, characterized in that: The seat comprises a seat body having a seat portion and a flexible cloth cover arranged on the seat portion, and the pressure plate is located between the upper surface of the seat portion and the flexible cloth cover; One end of the pressure plate is pivotally connected to the seat portion via a pressure plate shaft, and a pressure plate spring is arranged between the pressure plate and the seat portion. When the pressure plate is in a non-pressure working state, the other end of the pressure plate is away from the upper surface of the seat portion, and when the pressure plate is in a pressure-bearing working state, the other end of the pressure plate is close to the upper surface of the seat portion; the pressure plate spring applies an elastic force to the pressure plate, and the elastic force makes the other end of the pressure plate tend to move away from the upper surface of the seat portion.

5. The car safety seat according to claim 4, characterized in that: A pressing plate driving rod is fixed on the pressing plate, and the pressing plate driving rod passes downward through the seat portion, and the lower end portion of the pressing plate driving rod conflicts with the pulling mechanism.

6. The car safety seat according to claim 5, characterized in that: The pulling mechanism comprises: A swing rod, wherein the middle portion of the swing rod is pivotally connected to the bottom of the seat portion via a swing rod shaft, and one end of the swing rod is in conflict with the lower end of the pressure plate driving rod; A traction rope, 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 unlocking button; When the pressure plate is converted from a non-pressure working state to a pressure-bearing working state, the lower end of the pressure plate driving rod drives the swing rod to rotate around the swing rod rotating shaft, and the other end of the swing rod pulls the traction rope; A fixing block is arranged below the swing rod, the fixing block is fixed to the bottom of the seat part, a through hole is formed on the fixing block, and the traction rope passes through the through hole.

7. The car safety seat according to any one of claims 1 to 6, characterized in that: The right side of the seat is provided with a right side collision protection device, and the right side collision protection device has a folded working state and an opened working state. When the right side collision protection device is in the folded working state, the right side collision protection device is stored in the right side of the seat, and when the right side collision protection device is in the opened working state, the right side collision protection device extends to the right direction outside 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 folded working state and / or an open working state, the right locking device having an unlocked working state and a locked working state, when the right side collision protection device is in the folded working state and the right locking device enters the unlocked working state from the locked working state, the right side collision protection device is switched from the folded working state to the open working state; The right locking device comprises a right cover plate connected to the right side of the seat and a right unlocking button, one end of the right cover plate is pivotally connected to the right side of the seat through a right cover plate rotating shaft, the right unlocking button has a right boss, the right cover plate has a right groove, and the right boss is inserted into the right groove when the right locking device is in a locked working state; The right unlocking button is connected to the pulling mechanism so that it can be pulled out of the right groove by the pulling mechanism or can be manually pressed out of the right groove; Among them, the left side collision protection device and the right side collision protection device are in the open working state at the same time; or the left side collision protection device is in the open working state, and the right side collision protection device is in the folded working state; or the left side collision protection device is in the folded working state, and the right side collision protection device is in the open working state.

8. A car safety seat, comprising a base, a seat arranged on the base, a right side collision protection device being arranged on the right side of the seat, the right side collision protection device having a folded working state and an opened working state, when the right side collision protection device is in the folded working state, the right side collision protection device is stored in the right side of the seat, and when the right side collision protection device is in the opened working state, the right side collision protection device extends out of the right side of the seat in the right direction; The seat is also provided with a right locking device for locking the right side collision protection device in a folded working state and / or an open working state, the right locking device having an unlocked working state and a locked working state, when the right side collision protection device is in the folded working state and the right locking device enters the unlocked working state from the locked working state, the right side collision protection device is switched from the folded working state to the open working state; Features: The right locking device comprises a right cover plate connected to the right side of the seat and a right unlocking button, wherein one end of the right cover plate is pivotally connected to the right side of the seat through a right cover plate rotating shaft, the right unlocking button has a right boss, the right cover plate has a right groove, and the right boss of the right locking device is inserted into the right groove when the right locking device is in a locked working state; 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 unlocking button, the pressure plate has a non-pressure working state and a pressure-bearing working state, in the process of the pressure plate switching from the non-pressure working state to the pressure-bearing working state, the pulling mechanism pulls the right unlocking button to disengage from the right groove, thereby entering the unlocking working state from the locked working state, and the right side collision protection device switches from the folded working state to the open working state.

9. The car safety seat according to claim 8, characterized in that: The right side collision protection device further comprises: A right support rod, one end of the right support rod is pivotally connected to the other end of the right cover plate through a right support rod rotating shaft, the other end of the right support rod has a right guide pin, the right guide pin is transverse to the length direction of the right support rod, the right guide pin is arranged in a right sliding groove in the right side surface of the seat, and the right guide pin is slidably connected to the right sliding groove; A right elastic member, wherein the right elastic member is arranged between the right cover plate and the right support rod, and the right elastic member 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 a folded working state to an open working state.

10. The car safety seat according to claim 9, characterized in that: The right elastic member is sleeved on the right support rod shaft, one end of the right elastic member is pressed against the right support rod, and the other end of the right elastic member is pressed against the right cover plate; The middle part of the right unlocking button is pivotally connected to the right side of the seat through the right unlocking button torsion shaft, the right boss is located at one end of the right unlocking button, and the other end of the right unlocking button is connected to the pulling mechanism; the other end of the right cover plate has the right groove, and when the other end of the right unlocking button is manually pressed, the right locking device is switched from the locking working state to the unlocking working state, and the right boss is also separated from the right groove; The right locking device also includes a right button spring, which is arranged between the right side surface of the seat and the right unlocking button. The right button spring applies an elastic force to the right unlocking button, and the elastic force causes the right locking device to tend to enter a locked working state.

11. The car safety seat according to claim 8, characterized in that: The seat comprises a seat body having a seat portion and a flexible cloth cover arranged on the seat portion, and the pressure plate is located between the upper surface of the seat portion and the flexible cloth cover; One end of the pressure plate is pivotally connected to the seat portion via a pressure plate shaft, and a pressure plate spring is arranged between the pressure plate and the seat portion. When the pressure plate is in a non-pressure working state, the other end of the pressure plate is away from the upper surface of the seat portion, and when the pressure plate is in a pressure-bearing working state, the other end of the pressure plate is close to the upper surface of the seat portion; the pressure plate spring applies an elastic force to the pressure plate, and the elastic force makes the other end of the pressure plate tend to move away from the upper surface of the seat portion.

12. The car safety seat according to claim 11, characterized in that: A pressing plate driving rod is fixed on the pressing plate, the pressing plate driving rod passes downward through the seat portion, and the lower end portion of the pressing plate driving rod is in conflict with the pulling mechanism; The pulling mechanism comprises: A swing rod, wherein the middle portion of the swing rod is pivotally connected to the bottom of the seat portion via a swing rod shaft, and one end of the swing rod is in conflict with the lower end of the pressure plate driving rod; A traction rope, one end of which is connected to the other end of the swing rod, and the other end of which is connected to the right unlocking button; When the pressure plate is converted from a non-pressure working state to a pressure-bearing working state, the lower end of the pressure plate driving rod drives the swing rod to rotate around the swing rod rotating shaft, and the other end of the swing rod pulls the traction rope; A fixing block is arranged below the swing rod, the fixing block is fixed to the bottom of the seat part, a through hole is formed on the fixing block, and the traction rope passes through the through hole.

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