Child safety seat

Abstract

The utility model discloses a child safety seat, it includes a seat unit and a ventilation unit, the seat unit includes a seat body and a headrest body, the headrest body is set to be able to move up and down relative to the seat body, the ventilation unit is set in the headrest unit, and the ventilation unit moves up and down synchronously with the up and down movement of the headrest body. The child safety seat of the utility model allows the height position of the ventilation unit to be adjustable to satisfy the ventilation needs of the user.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, and in particular to a child safety seat. Background Technology

[0002] A child safety seat is a seat installed in a vehicle for children to ride in, significantly improving their safety. Therefore, child safety seats have become increasingly popular in recent years. To make them more comfortable, child safety seats are typically covered with a large area of ​​fabric. However, this also brings other problems. For example, the large fabric covering reduces ventilation, leading to heat and sweat buildup on the child's back after prolonged use. To address this issue, Chinese utility model patent CN222698352U discloses a child safety seat comprising a seat back, a first fan, a first air pressure mechanism, a second fan, and a second air pressure structure. The first fan and the first air pressure structure are located on the seat back. The first air pressure structure has a first air-gathering channel. This channel is used to increase the air pressure of the gas blown by the first fan into the seat back when the first fan is blowing air. When the first fan is drawing air in, the air from the seat back is drawn into the first air-gathering channel. The second fan is disposed on the seat back, and the second air pressure structure is disposed on the seat back. The first air pressure structure has a second air gathering channel. The second air gathering channel is used to increase the air pressure of the gas blown into the seat back by the second fan when the second fan is blowing air, and to draw the gas in the seat back into the second air gathering channel when the second fan is sucking air in. Although existing child safety seats can provide ventilation, a drawback of existing child safety seats is that the height of the first and second fans cannot be adjusted. This prevents existing child safety seats from ventilating different parts of the child. For example, the first and second fans of existing child safety seats are positioned at the child's waist, so they can only ventilate the area corresponding to the waist and cannot ventilate the areas below the waist or the back. Utility Model Content

[0003] One objective of this invention is to provide a child safety seat in which the height of the ventilation unit can be adjusted to meet the individual ventilation needs of a child.

[0004] One objective of this invention is to provide a child safety seat, wherein the ventilation unit is disposed in the headrest body of the seat unit, and when the headrest body moves up and down relative to the seat body, the ventilation unit moves up and down synchronously with the up and down movement of the headrest body, thereby adjusting the height position of the ventilation unit.

[0005] One objective of this invention is to provide a child safety seat in which, even when significant pressure is applied to the child's back to the ventilation unit, the ventilation unit can still ensure air convection within the seat compartment, thereby guaranteeing the ventilation effect of the child safety seat. Specifically, the ventilation unit has air guide grooves in the padding and air inlet openings on the protrusions of the ventilation module housing. Regardless of whether significant pressure is applied to the ventilation unit from within the child's body, when the ventilation module is operating, air can enter the interior of the ventilation module through the air guide grooves in the padding and the air inlet openings in the housing, and subsequently exit through the exhaust channel of the ventilation module, thus ensuring the ventilation effect of the child safety seat.

[0006] One objective of this invention is to provide a child safety seat in which the padding of the child safety seat has through holes. When the padding is installed on the seat body, the through holes in the padding correspond to the air intake channel of the ventilation unit. In this way, the padding can achieve ventilation without the need for a dedicated ventilation structure, which not only makes the child safety seat more convenient to use but also effectively reduces the cost of the child safety seat.

[0007] According to one aspect of this utility model, this utility model provides a child safety seat, which includes:

[0008] One ventilation unit; and

[0009] A seat unit, wherein the seat unit includes a seat body and a headrest body, the headrest body is configured to move up and down relative to the seat body, and a ventilation unit is disposed in the headrest unit, the ventilation unit moving up and down synchronously with the up and down movement of the headrest body.

[0010] According to one embodiment of the present invention, the headrest body includes a headrest portion and a backrest disposed below the headrest portion. The headrest portion is slidably mounted on the seat body, and the backrest is suspended by the headrest portion within the seat chamber of the seat body. The backrest has a receiving cavity, and the fabric of the front wall of the backrest for defining the receiving cavity is a mesh fabric, so that the receiving cavity of the backrest and the seat chamber of the seat body are connected through the mesh of the backrest. The ventilation unit is installed in the receiving cavity of the backrest to provide ventilation to the headrest body.

[0011] According to one embodiment of the present invention, the ventilation unit includes a liner and a ventilation module. The liner has a mounting groove, at least one pad hole, and at least one side notch. The opening of the mounting groove is located on the rear surface of the liner, and the opening of the pad hole is located on the front surface of the liner. The pad hole and the side notch are respectively connected to the mounting groove. The ventilation module includes a housing, at least one fan, and a circuit board. The housing has an assembly cavity, at least one air inlet channel, and at least one exhaust channel. The air inlet channel is connected to the assembly cavity on the front side of the housing, and the exhaust channel is connected to the front side of the housing. The fan has an air inlet and an exhaust outlet, and is mounted in the assembly cavity of the housing. The air inlet of the fan is connected to the air intake channel of the housing, and the exhaust outlet of the fan is connected to the exhaust channel of the housing. The circuit board is mounted in the assembly cavity of the housing, and the fan is connected to the circuit board. The ventilation module is installed in the mounting groove of the gasket. The air intake channel of the housing and the gasket hole of the gasket correspond to and communicate with each other. The exhaust channel of the housing and the side notch of the gasket correspond to and communicate with each other.

[0012] According to one embodiment of the present invention, the housing includes a housing body and a housing cover. The housing body has at least one boss, the air intake channel of the housing is formed on the end face of the boss, the exhaust channel of the housing is formed on the side of the housing body, and the housing cover is mounted on the housing body to form the assembly cavity of the housing between the housing body and the housing cover. The boss of the housing body extends into the pad hole of the gasket, and the end face of the boss is lower than the front surface of the gasket.

[0013] According to one embodiment of the present invention, the liner has at least one air guide groove extending from the pad hole to the side of the liner, wherein the boss of the shell body has an air inlet notch, and the air inlet notch of the shell body and the air guide groove of the liner correspond to and communicate with each other.

[0014] According to one embodiment of the present invention, the air guide groove of the liner and the side notch are connected.

[0015] According to one embodiment of the present invention, the ventilation unit includes a liner and a ventilation module. The liner has a mounting groove, two pad holes, and two side notches. The opening of the mounting groove is located on the rear surface of the liner, and the openings of the two pad holes are respectively located on the front surface of the liner. The two pad holes and the two side notches are respectively connected to the mounting groove. The ventilation module includes a housing, two fans, and a circuit board. The housing has an assembly cavity, two air inlet channels, and two exhaust channels. The two air inlet channels are respectively located on the front side of the housing and connected to the assembly cavity. The two exhaust channels are respectively located on two opposite sides of the housing. The side of the fan is connected to the assembly cavity. Each fan has an air inlet and an exhaust outlet. The fan is assembled in the assembly cavity of the housing. The air inlet of the fan is connected to the air inlet channel of the housing. The exhaust outlet of the fan is connected to the exhaust channel of the housing. The circuit board is assembled in the assembly cavity of the housing. Each fan is connected to the circuit board. The ventilation module is installed in the mounting groove of the gasket. The air inlet channel of the housing and the gasket hole of the gasket correspond and communicate. The exhaust channel of the housing and the side notch of the gasket correspond and communicate.

[0016] According to one embodiment of the present invention, the seat unit includes a child cushion, which is detachably mounted to the seat body.

[0017] According to one embodiment of the present invention, the children's mat includes a mat cover and a filling portion filled in the mat cover. The filling portion has at least one through hole that extends through opposite sides of the filling portion. The fabric of the mat cover corresponding to the through hole of the filling portion is a mesh fabric.

[0018] According to one embodiment of the present invention, the seat unit includes a child cushion, which is detachably installed on the seat body. The child cushion includes a cushion cover and a filling portion filled in the cushion cover. The filling portion has at least one through hole that extends through opposite sides of the filling portion. The fabric of the cushion cover corresponding to the through hole of the filling portion is a mesh fabric. The inner diameter of the through hole of the filling portion is larger than the inner diameter of the pad hole of the cushion. Attached Figure Description

[0019] Figure 1 This is a perspective view of a child safety seat according to a preferred embodiment of the present invention.

[0020] Figure 2This is an exploded view of the child safety seat according to the above-described preferred embodiment of the present invention.

[0021] Figure 3 This is an exploded view of the child safety seat according to the above-described preferred embodiment of the present invention.

[0022] Figure 4 This is a perspective view of one state of the child safety seat according to the above-described preferred embodiment of the present invention.

[0023] Figure 5 This is a perspective view of a partial location of the child safety seat according to the above-described preferred embodiment of the present invention.

[0024] Figure 6 This is a cross-sectional schematic diagram of a partial location of the child safety seat according to the above-described preferred embodiment of the present invention.

[0025] Figure 7 yes Figure 6 A magnified view of a local location.

[0026] Figure 8 This is a cross-sectional schematic diagram showing the connection relationship between a ventilation unit and a backrest of the child safety seat according to the above-described preferred embodiment of the present invention.

[0027] Figure 9 This is a perspective view of the ventilation unit of the child safety seat according to the above-described preferred embodiment of the present invention.

[0028] Figure 10 This is a perspective view of the ventilation unit of the child safety seat according to the above-described preferred embodiment of the present invention.

[0029] Figure 11 This is a perspective view of a ventilation module of the ventilation unit of the child safety seat according to the above-described preferred embodiment of the present invention.

[0030] Figure 12 This is an exploded view of the ventilation module of the ventilation unit of the child safety seat according to the above-described preferred embodiment of the present invention.

[0031] Figure 13 This is an exploded view of the ventilation module of the ventilation unit of the child safety seat according to the above-described preferred embodiment of the present invention.

[0032] Figure 14This is an exploded view of the ventilation module of the ventilation unit of the child safety seat according to the above-described preferred embodiment of the present invention.

[0033] Figure 15 This is a perspective view of one state of the child safety seat according to the above-described preferred embodiment of the present invention.

[0034] Figure 16 This is a perspective view of another state of the child safety seat according to the above-described preferred embodiment of the present invention.

[0035] Figure 17 This is a perspective view of a child safety seat in use according to the above-described preferred embodiment of the present invention.

[0036] Figure 18 This is a perspective view of another usage state of the child safety seat according to the above-described preferred embodiment of the present utility model.

[0037] Figure 19 This is a perspective view of another usage state of the child safety seat according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0038] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0039] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0040] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 19 A preferred embodiment of the present invention will be disclosed and described in the following description, wherein the child safety seat includes a seat unit 10 and a ventilation unit 20 installed in the seat unit 10.

[0041] The seat unit 10 includes a seat body 11 and a headrest body 12. The headrest body 12 is configured to move vertically relative to the seat body 11, that is, the headrest body 12 can be raised and lowered relative to the seat body 11. The seat body 11 provides a cabin for a child to sit in, and the headrest body 12 supports the child's head and back. By adjusting the height of the headrest body 12 relative to the seat body 11, the seat unit 10 can meet the individual sitting needs of children. (Refer to the attached diagram.) Figure 15 and Figure 16 Specifically, when the headrest body 12 is in a lower position, the child safety seat is suitable for children of shorter stature; when the headrest body 12 is in a higher position, the child safety seat is suitable for children of taller stature.

[0042] It is worth mentioning that the connection method of the seat body 11 and the headrest body 12 of the child safety seat of this utility model is the same as the connection method of the backrest assembly and headrest assembly of the child safety seat disclosed in Chinese invention patent application with application publication number CN119928687A. The connection method of the seat body 11 and the headrest body 12 of the child safety seat of this utility model will not be described again.

[0043] Unlike existing technologies, in the child safety seat of this invention, the ventilation unit 20 is disposed on the headrest body 12. In this way, the ventilation unit 20 can move up and down synchronously with the headrest body 12, making its height adjustable to meet the child's individual ventilation needs. For example, the height of the ventilation unit 20 can be adjusted from a position corresponding to the hips to a position corresponding to the waist, or from a position corresponding to the waist to a position corresponding to the back.

[0044] Specifically, the headrest body 12 includes a headrest portion 121 and a backrest 122. The backrest 122 is disposed below the headrest portion 121. The headrest portion 121 is slidably mounted on the seat body 11 and provides support for the child's head. The backrest 122 is suspended by the headrest portion 121 within the seat compartment of the seat body 11 and provides support for the child's back. The ventilation unit 20 is disposed on the backrest 122, thereby being held within the seat compartment of the seat body 11. It is understood that when the headrest portion 121 slides and rises / falls relative to the seat body 11, the headrest portion 121 can drive the backrest 122 to rise / fall synchronously and to the same extent, thereby adjusting the height position of the backrest 122 and the ventilation unit 20. (Refer to the attached diagram.) Figure 18 and Figure 19 .

[0045] More specifically, the backrest 122 includes a front wall 1221 and a rear wall 1222. The edges of the front wall 1221 and the rear wall 1222 are sewn together to form a receiving cavity 1223 between the front wall 1221 and the rear wall 1222. The fabric of the front wall 1221 is a mesh fabric, so that the receiving cavity 1223 of the backrest 122 and the seat chamber of the seat body 11 are connected through the mesh of the backrest 122. The ventilation unit 20 is installed in the receiving cavity 1223 of the backrest 122, thus placing the ventilation unit 20 on the headrest body 12. That is, the ventilation unit 20 is hidden inside the backrest 122, making it visually invisible, thereby improving the aesthetics of the child safety seat. Because the front wall 1221 of the backrest 122 is made of mesh fabric, the receiving cavity 1223 of the backrest 122 and the seat compartment of the seat body 11 are connected through the mesh of the backrest 122. Therefore, even if the ventilation unit 20 is hidden inside the backrest 122, the child safety seat still has good ventilation. Optionally, in other examples of the child safety seat of this utility model, the fabric of the rear wall 1222 of the backrest 122 can also be mesh fabric.

[0046] Further, see Appendix Figure 4 and Figure 5 The backrest 122 has an opening 12221 on its rear wall 1222, which connects to the receiving cavity 1223. The ventilation unit 20 is detachably installed in the receiving cavity 1223 through the opening 12221 of the rear wall 1222. This facilitates both maintenance of the ventilation unit 20 and cleaning of the backrest 122. Specifically, when the ventilation unit 20 malfunctions, it can be removed from the backrest 122 through the opening 12221 of the rear wall 1222 for repair. Similarly, when the front wall 1221 and / or the rear wall 1222 of the backrest 122 are dirty, the ventilation unit 20 can be removed from the backrest 122 through the opening 12221 of the rear wall 1222 for cleaning.

[0047] It is worth mentioning that the specific way in which the opening 12221 is provided on the rear wall 1222 of the backrest 122 is not limited in the child safety seat of this utility model. For example, the rear wall 1222 can be formed by two pieces of fabric. One side of the fabric of the rear wall 1222 is sewn to the top, upper left and upper right of the front wall 1221, respectively, so that the top of the receiving cavity 1223 is formed by this fabric and the front wall 1221. The other side of the fabric is sewn to the bottom, lower left and lower right of the front wall 1221, respectively, so that the bottom of the receiving cavity 1223 is formed by this fabric and the front wall 1221. The gap between the two pieces of fabric forms the opening 12221.

[0048] Reference Appendix Figure 4 , Figure 5 and Figure 8 The backrest 122 further includes a terminal retainer 1224, the terminal retainer 1224 having a retaining groove 12241 and a terminal through hole 12242 communicating with the retaining groove 12241. The terminal retainer 1224 is disposed on the rear wall 1222, and the retaining groove 12241 of the terminal retainer 1224 communicates with the receiving cavity 1223 of the backrest 122. In a specific example of the child safety seat of this utility model, adhesive can be used to bond the terminal retainer 1224 and the rear wall 1222, thereby disposing the terminal retainer 1224 on the rear wall 1222.

[0049] The specific process of installing the ventilation unit 20 on the backrest 122 can be as follows: First, install a terminal 211 of a wire 21 of the ventilation unit 20 into the retaining groove 12241 of the terminal retainer 1224. Second, install the ventilation unit 20 into the receiving cavity 1223 of the backrest 1222 through the opening 12221 of the rear wall 1222. At this time, the terminal 211 of the wire 21 is aligned with the terminal through hole 12242 of the terminal retainer 1224, so that external power can be supplied to the ventilation unit 20 through the terminal 211 of the wire 21. The specific process of removing the ventilation unit 20 from the backrest 122 can be as follows: First, the ventilation unit 20 is taken out from the receiving cavity 1223 of the backrest 122 through the opening 12221 of the rear wall 1222. Second, the wiring terminal 211 of the wire 21 is separated from the retaining groove 12241 of the terminal retainer 1224.

[0050] It is worth mentioning that the front wall 1221 of the backrest 122 and the front side of the cover layer of the headrest 121 are made of the same fabric, and the rear wall 1222 of the backrest 122 and the rear side of the cover layer of the headrest 121 are also made of the same fabric. Therefore, the headrest 1221 can suspend the backrest 122 within the cabin of the seat body 11. Optionally, in other examples of the child safety seat of this invention, the top of the backrest 122 is detachably attached to the bottom of the headrest 121. For example, a zipper can be used to detachably attach the top of the backrest 122 and the bottom of the headrest 121.

[0051] Appendix Figures 9 to 14 The specific structure of the ventilation unit 20 is shown, wherein the ventilation unit 20 includes a liner 22 and a ventilation module 23 mounted on the liner 22.

[0052] Specifically, the pad 22 has a mounting groove 221, at least one pad hole 222, and at least one side notch 223. The opening of the mounting groove 221 is located on the rear surface of the pad 22, the opening of the pad hole 222 is located on the front surface of the pad 22, and the pad hole 222 communicates with the mounting groove 221. The side notch 223 also communicates with the mounting groove 221. The specific material of the pad 22 is not limited in the child safety seat of this invention. For example, the material of the pad 22 can be sponge, so that the backrest 122 can provide flexible support for the child.

[0053] The ventilation module 23 includes a housing 231, at least one fan 232, and a circuit board 233. The housing 231 has an assembly cavity 2311, at least one air inlet channel 2312, and at least one exhaust channel 2313. The air inlet channel 2312 connects to the assembly cavity 2311 at the front of the housing 231, and the exhaust channel 2313 connects to the assembly cavity 2311 at the side of the housing 231. The fan 232 has an air inlet 2321 and an exhaust outlet 2322. The assembly cavity 2311 of the housing 231 is assembled therein, the air inlet 2321 of the fan 232 is connected to the air inlet channel 2312 of the housing 231, the exhaust port 2322 of the fan 232 is connected to the exhaust channel 2313 of the housing 231, the circuit board 233 is assembled in the assembly cavity 2311 of the housing 231, and the fan 232 is connected to the circuit board 233, and the working state of the fan 232 is controlled by the circuit board 233.

[0054] The ventilation module 23 is installed in the mounting groove 221 of the gasket 22. The air intake channel 2312 of the housing 231 corresponds to the gasket hole 222 of the gasket 22, and the air intake channel 2312 of the housing 231 and the gasket hole 222 of the gasket 22 are connected. The exhaust channel 2313 of the housing 231 corresponds to the side notch 223 of the gasket 22, and the exhaust channel 2313 of the housing 231 and the side notch 223 of the gasket 22 are connected. It is understood that one end of the wire 21 relative to the terminal 211 is connected to the circuit board 233, so that external power can be supplied to the circuit board 233 through the wire 21, and then supplied to the fan 232 by the circuit board 233, thereby enabling the fan 232 to be in operation.

[0055] After the ventilation unit 20 is installed in the receiving cavity 1223 of the backrest 122, the air intake channel 2312 of the housing 231 faces the front side of the backrest 122, and the exhaust channel 2313 of the housing 231 faces the side of the backrest 122. Thus, when the fan 232 is in working condition, the air at the front of the backrest 122 can be drawn away and discharged from the side of the backrest 122. In this way, the air in the cabin of the seat body 11 can convect, thereby achieving the ventilation effect of the child safety seat.

[0056] Reference Appendix Figures 12 to 14 The housing 231 further includes a housing body 2314 and a housing cover 2315, wherein the housing body 2314 has at least one boss 23141, the air intake passage 2312 of the housing 231 is formed on the end face of the boss 23141, the exhaust passage 2313 of the housing 231 is formed on the side of the housing body 2314, wherein the housing cover 2315 is mounted on the housing body 2314 to form the assembly cavity 2311 of the housing 231 between the housing body 2314 and the housing cover 2315.

[0057] In this specific example of the child safety seat of this utility model, the housing body 2314 has at least one set of insertion posts 23142, and the fan 232 has a set of insertion holes 2323. The insertion posts 23142 of the housing body 2314 are inserted into the insertion holes 2323 of the fan 232, so that the fan 232 is installed on the housing body 2314. After the housing cover 2315 is installed on the housing body 2314, the housing body 2314 and the housing cover 2315 clamp the fan 232 on opposite sides, thereby reliably assembling the fan 232 into the assembly cavity 2311 of the housing 231. The circuit board 233 is screwed onto the housing body 2314, so that the circuit board 233 is reliably assembled into the assembly cavity 2311 of the housing 231.

[0058] It is worth mentioning that the specific way in which the cover 2315 is installed on the body 2314 is not limited in the child safety seat of this utility model. For example, a set of screws can be used to install the cover 2315 on the body 2314.

[0059] The boss 23141 of the shell body 2314 protrudes into the pad hole 222 of the pad 22, and the end face of the boss 23141 of the shell body 2314 is lower than the front surface of the pad 22. In this way, on the one hand, during the process of installing the ventilation module 23 into the mounting groove 221 of the pad 22, it can be ensured that the air intake channel 2312 of the shell 231 and the pad hole 222 of the pad 22 correspond and communicate, avoiding the situation where the air intake channel 2312 of the shell body 21 is blocked by the pad 22 due to misalignment between the shell 231 and the pad 22. On the other hand, after the ventilation module 23 is installed on the pad 22, it is beneficial to increase the contact area between the outer surface of the shell 231 and the inner surface of the pad 22, thereby making the friction between the shell body 21 and the pad 22 greater, so as to ensure that the ventilation module 23 is reliably installed on the pad 22. It is understood that, in order to further ensure that the ventilation module 23 is reliably installed on the gasket 22, adhesive or double-sided tape may also be provided between the housing 231 and the gasket 22.

[0060] Reference Appendix Figures 8 to 10The liner 22 further has at least one air guide groove 224, which extends from the pad hole 222 to the side of the liner 22. The boss 23141 of the shell body 2314 has an air inlet notch 231411. The air inlet notch 231411 of the boss 23141 of the shell body 2314 and the air guide groove 224 of the liner 22 correspond to each other and are interconnected. By providing the air guide groove 224 on the pad 22 and the air intake notch 231411 on the protrusion 23141 of the shell body 2314, even if a child deforms the pad 22, causing the air intake channel 2312 of the shell 231 located on the end face of the protrusion 23141 to be blocked, air in the seat compartment of the seat body 11 can still enter the fan 232 through the air guide groove 224 of the pad 22 and the air intake notch 231411 of the protrusion 23141 of the shell body 2314, achieving air convection. Preferably, the air guide groove 224 and the side notch 223 of the pad 22 are connected.

[0061] In the appendix Figures 1 to 19 In this specific example of the child safety seat of the present invention, the pad 22 has two pad holes 222 and two side notches 223. The two pad holes 222 are respectively connected to the mounting groove 221 on the front side of the pad 22, and the two side notches 223 are respectively connected to the mounting groove 221 on opposite sides of the pad 22. The housing 231 has two air intake channels 2312 and two exhaust channels 2313. The two air intake channels 2312 are respectively connected to the assembly cavity 2311 on the front side of the housing 231, and the two exhaust channels 2313 are respectively connected to the assembly cavity 2311 on two opposite sides of the housing 231. There are two fans 232, which are respectively mounted at opposite ends of the assembly cavity 2311 of the housing 231 and respectively connected to the circuit board 233. One air intake passage 2312 and one exhaust passage 2313 of the housing 231 correspond to and communicate with one pad hole 222 and one side notch 223 of the pad 22, respectively. The other air intake passage 2312 and the other exhaust passage 2313 of the housing 231 correspond to and communicate with another pad hole 222 and another side notch 223 of the pad 22, respectively. With this structure, the child safety seat can provide better ventilation.

[0062] Reference Appendix Figures 1 to 3 , Figure 6 , Figure 7 and Figure 17The seat unit 10 further includes a child cushion 13, which is detachably installed on the seat body 11. That is, the user can choose whether to install the child cushion 13 on the seat body 11. When the child cushion 13 is installed on the seat body 11, the child safety seat is suitable for younger children; when the child cushion 13 is removed from the seat body 11, the child safety seat is suitable for older children.

[0063] Furthermore, the child safety seat 13 includes a cover 131 and a filling portion 132 filled within the cover 131. The filling portion 132 has at least one through-hole 1321 extending through both opposite sides of the filling portion 132. The fabric of the cover 131 corresponding to the through-hole 1321 of the filling portion 132 is a mesh fabric. In other words, air on both opposite sides of the child safety seat 13 can flow through the through-hole 1321 of the filling portion 132. After the child safety seat 13 is installed on the seat body 11, the position of the through-hole 1321 of the filling portion 132 corresponds to the position of the pad hole 222 of the pad 22, thereby achieving ventilation within the cabin of the seat body 11. In a specific example of the child safety seat of this utility model, the filling portion 132 can be a sponge.

[0064] In the appendix Figures 1 to 19 In the child safety seat of the present invention shown, the number of through holes 1321 in the filling part 132 of the child cushion 13 is two. After the child cushion 13 is installed on the seat body 11, the positions of the two through holes 1321 in the filling part 132 of the child cushion 13 correspond to the positions of the two pad holes 222 in the pad 22.

[0065] Preferably, refer to the appendix Figure 6 and Figure 7 The inner diameter of the through hole 1321 of the filling part 132 is larger than the inner diameter of the pad hole 222 of the pad 22, so as to ensure that the position of the through hole 1321 of the filling part 132 corresponds to the position of the pad hole 222 of the pad 22, thereby ensuring the ventilation effect of the child safety seat.

[0066] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the implementation of the present invention may be made without departing from the stated principles.

Claims

1. A child safety seat, characterized in that, include: One ventilation unit; and A seat unit, wherein the seat unit includes a seat body and a headrest body, the headrest body is configured to move up and down relative to the seat body, and a ventilation unit is disposed in the headrest unit, the ventilation unit moving up and down synchronously with the up and down movement of the headrest body.

2. The child safety seat according to claim 1, wherein the headrest body includes a headrest portion and a backrest disposed below the headrest portion, the headrest portion is slidably mounted to the seat body, the backrest is suspended by the headrest portion within the cabin of the seat body, the backrest has a receiving cavity, and the fabric of the front wall of the backrest defining the receiving cavity is a mesh fabric, such that the receiving cavity of the backrest and the cabin of the seat body are connected through the mesh of the backrest, wherein a ventilation unit is installed in the receiving cavity of the backrest to provide ventilation unit in the headrest body.

3. The child safety seat according to claim 2, wherein the ventilation unit comprises a pad and a ventilation module, the pad having a mounting groove, at least one pad hole and at least one side notch, the groove opening of the mounting groove being disposed on the rear surface of the pad, the opening of the pad hole being disposed on the front surface of the pad, the pad hole and the side notch respectively communicating with the mounting groove, wherein the ventilation module comprises a housing, at least one fan and a circuit board, the housing having an assembly cavity, at least one air intake channel and at least one exhaust channel, the air intake channel communicating with the assembly cavity on the front side of the housing, the exhaust channel communicating with the front side of the housing, and the exhaust channel communicating with the front side of the housing. The side of the housing is connected to the assembly cavity. The fan has an air inlet and an exhaust outlet. The fan is assembled in the assembly cavity of the housing. The air inlet of the fan is connected to the air inlet channel of the housing. The exhaust outlet of the fan is connected to the exhaust channel of the housing. The circuit board is assembled in the assembly cavity of the housing. The fan is connected to the circuit board. The ventilation module is installed in the mounting groove of the gasket. The air inlet channel of the housing and the gasket hole of the gasket correspond and communicate. The exhaust channel of the housing and the side notch of the gasket correspond and communicate.

4. The child safety seat of claim 3, wherein the housing comprises a housing body and a housing cover, the housing body having at least one boss, the air intake passage of the housing being formed on the end face of the boss, the exhaust passage of the housing being formed on the side of the housing body, the housing cover being mounted to the housing body to form the mounting cavity of the housing between the housing body and the housing cover, wherein the boss of the housing body extends into the pad hole of the pad, and the end face of the boss is lower than the front surface of the pad.

5. The child safety seat according to claim 4, wherein the pad has at least one air guide groove extending from the pad hole to the side of the pad, wherein the boss of the shell body has an air inlet notch, and the air inlet notch of the shell body and the air guide groove of the pad correspond to and communicate with each other.

6. The child safety seat according to claim 5, wherein the air duct of the cushion is connected to the side notch.

7. The child safety seat according to claim 2, wherein the ventilation unit comprises a pad and a ventilation module, the pad having a mounting groove, two pad holes and two side notches, the groove opening of the mounting groove being disposed on the rear surface of the pad, the openings of the two pad holes being respectively disposed on the front surface of the pad, the two pad holes and the two side notches being respectively connected to the mounting groove, wherein the ventilation module comprises a housing, two fans and a circuit board, the housing having an assembly cavity, two air intake channels and two exhaust channels, the two air intake channels being respectively connected to the assembly cavity on the front side of the housing, and the two exhaust channels being respectively connected to the front side of the housing. Two opposing sides are connected to the assembly cavity. Each fan has an air inlet and an exhaust outlet. The fan is assembled in the assembly cavity of the housing. The air inlet of the fan is connected to the air inlet channel of the housing. The exhaust outlet of the fan is connected to the exhaust channel of the housing. The circuit board is assembled in the assembly cavity of the housing. Each fan is connected to the circuit board. The ventilation module is installed in the mounting groove of the gasket. The air inlet channel of the housing and the gasket hole of the gasket correspond and communicate. The exhaust channel of the housing and the side notch of the gasket correspond and communicate.

8. The child safety seat according to any one of claims 1 to 7, wherein the seat unit includes a child cushion detachably mounted to the seat body.

9. The child safety seat according to claim 8, wherein the child cushion comprises a cushion cover and a filling portion filled in the cushion cover, the filling portion having at least one through hole penetrating opposite sides of the filling portion, and the fabric of the portion of the cushion cover corresponding to the through hole of the filling portion is a mesh fabric.

10. The child safety seat according to any one of claims 3 to 7, wherein the seat unit includes a child cushion detachably mounted to the seat body, the child cushion including a pad cover and a filling portion filled in the pad cover, the filling portion having at least one through hole penetrating opposite sides of the filling portion, the fabric of the portion of the pad cover corresponding to the through hole of the filling portion being a mesh fabric, wherein the inner diameter of the through hole of the filling portion is larger than the inner diameter of the pad hole of the pad cover.

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