Side collision block structure and child safety seat

Abstract

The present application discloses a side collision block structure and a child safety seat. The side collision block structure comprises a side collision block base mounted on a side surface of a child safety seat, and a side collision block body detachably connected to the side collision block base. An engagement part is disposed on the side collision block body, the side collision block base is provided with a joining part into which the engagement part is inserted, and the engagement part cooperates with the joining part so that the side collision block body is engagingly fixed to the side collision block base after rotating about the axis of the side collision block base. The side collision block structure further comprises a limiting part, and the limiting part is adapted to limit the engagement part so as to restrict the engagement part from rotating about the axis of the side collision block base after the side collision block body and the side collision block base are engagingly fixed, thus preventing the engagement part from rotating due to being jolted around while a vehicle is being driven, leading to the engagement part separating from the joining part, thereby improving the reliability of rotating engagement between the engagement part and the joining part.

Description

Side impact block structure and child safety seat Technical Field

[0001] The present application relates to the technical field of child safety seats, and in particular to a side impact block structure and a child safety seat. Background Art

[0002] Child safety seats are typically secured to the car seat by the car's seatbelt or ISOFIX interface, preventing them from being thrown forward in the event of a rear-end collision or collision. However, in a side collision, neither the seatbelt nor the ISOFIX interface is sufficient to prevent the child seat from moving sideways. Therefore, it is necessary to equip child safety seats with side impact protection to prevent lateral movement.

[0003] The side impact protection devices in the prior art are usually fixedly installed on the child safety seat and cannot be removed or replaced according to the needs of the user; or the connection structure between the side impact protection device and the child safety seat is relatively complex, and the user's installation and removal of the side impact protection device is cumbersome and difficult, which brings many inconveniences in use.

[0004] Summary of the Invention

[0005] One purpose of the present application is to provide a side impact block structure to solve the problem that the installation and disassembly operations between the existing side impact protection device and the safety seat are complicated and difficult.

[0006] Another object of the present application is to provide a child safety seat.

[0007] To achieve the above objectives, the technical solution adopted in this application is: a side impact block structure, including a side impact block base installed on the side of the child safety seat, and a side impact block main body detachably connected to the side impact block base, the side impact block main body is provided with a clamping portion, and the side impact block base is provided with a coupling portion for inserting the clamping portion, the clamping portion is suitable for cooperating with the coupling portion so that the side impact block main body rotates around the axis of the side impact block base and then is clamped and fixed with the side impact block base, the side impact block structure also includes a limiting portion, the limiting portion is suitable for limiting the clamping portion to limit the clamping portion from rotating around the axis of the side impact block base after the side impact block main body is clamped and fixed with the side impact block base.

[0008] As a preferred embodiment, the side impact block base includes a mounting end surface in contact with the child safety seat and a limiting end surface in contact with the side impact block body, a hollow mounting cavity is provided between the mounting end surface and the limiting end surface, a mounting port communicating with the mounting cavity is provided on the limiting end surface, the coupling portion includes the mounting cavity and the mounting port, the clamping portion can be inserted into the mounting cavity through the mounting port, and rotate around the axis of the side impact block base in the mounting cavity to realize the rotational engagement of the clamping portion and the coupling portion.

[0009] As another preferred embodiment, the clamping portion includes a guide portion extending axially along the side impact block body and a retaining portion extending radially along the side impact block body, and the shape of the retaining portion is adapted to the shape of the mounting port, so that after the clamping portion and the combining portion are plugged into and rotated with each other, the retaining portion and the mounting port are staggered, and the retaining portion forms a limiting fit with the limiting end face to prevent the retaining portion from exiting the mounting cavity.

[0010] Further preferably, when the retaining portion is rotated to the engaging and fixing position, the retaining portion and the mounting cavity are interference fit.

[0011] Furthermore, the limiting portion is arranged in the combining portion or on the clamping portion.

[0012] Furthermore, a circular side wall is formed around the installation cavity, and the limiting portion is arranged on the circular side wall. The limiting portion is suitable for engaging with the retaining portion to limit the rotation of the retaining portion around the axis of the side impact block base when the external force does not exceed a preset value.

[0013] Furthermore, the limiting portion includes two limiting protrusions, and the two limiting protrusions are symmetrically arranged on the circular side wall with the axis of the circular side wall as the center.

[0014] Furthermore, the limiting portion includes a connecting bayonet and a connecting block, the connecting bayonet is opened on the limiting end face, and the connecting block is arranged on the retaining portion. When the clamping portion and the combining portion are rotated and engaged, the connecting block is engaged with the connecting bayonet, thereby limiting the rotation of the retaining portion around the axis of the side impact block base when the external force does not exceed a preset value.

[0015] Furthermore, a pushing protrusion is provided at the bottom of the installation cavity near the installation end surface, and the pushing protrusion is arranged toward the installation port. The pushing protrusion can undergo elastic deformation to continuously apply a force to the retaining part in the installation cavity to move toward the side impact block body, thereby pushing the retaining part out of the installation cavity or pushing the retaining part onto the limiting end surface.

[0016] On the other hand, the present application provides a child safety seat, comprising the above-mentioned side impact block structure.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The side impact block structure provided by the present application includes a side impact block body and a side impact block base, the side impact block body is provided with a clamping block that cooperates with the clamping interface on the side impact block base, the clamping interface includes an opening arranged on the end surface of the side impact block base and an installation cavity in the side impact block base, and then when the clamping block on the side impact block body is inserted into the installation cavity on the side impact block base through the opening, the side impact block body is rotated around the axis of the side impact block base, so that the clamping block and the opening are misaligned, and the clamping block cannot be removed from the installation cavity through the opening, that is, the side impact block body is rotatably engaged and fixed on the side impact block base through the cooperation of the clamping block and the clamping interface; at the same time, the side impact block structure also includes a limiting part, which is arranged on the clamping block or the clamping interface, and the limiting part is suitable for limiting the rotation of the clamping block around the axis of the side impact block base when the external force does not exceed a preset value, so as to prevent the clamping block from rotating due to bumps during driving of the car, so that the clamping block can be removed from the opening position, and the side impact block body is separated from the side impact block base, and cannot play a side impact protection role for the child safety seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is an exploded schematic diagram of the side impact block structure of the present application;

[0020] FIG2 is a schematic diagram of a side impact block body in the side impact block structure of the present application;

[0021] FIG3 is a side view of the side impact block body in the side impact block structure of the present application;

[0022] FIG4 is a schematic diagram of the three-dimensional structure of the side impact block base in the side impact block structure of the present application;

[0023] FIG5 is a schematic diagram of one side of the mounting end surface of the side impact block base in the side impact block structure of the present application;

[0024] FIG6 is a cross-sectional view of the side impact block base in the side impact block structure of the present application;

[0025] FIG7 is a schematic diagram of the three-dimensional structure of the side impact block structure of the present application when the retaining portion is aligned with the mounting opening;

[0026] FIG8 is a cross-sectional view of the side impact block structure of the present application when the retaining portion is aligned with the mounting opening;

[0027] FIG9 is a schematic diagram of the three-dimensional structure of the side impact block structure of the present application when the retaining portion and the mounting opening are staggered;

[0028] FIG10 is a cross-sectional view of the side impact block structure of the present application when the retaining portion and the mounting opening are staggered.

[0029] In the figure: 100, side impact block structure; 200, side impact block base; 210, joint; 220, limiting end face; 221, mounting opening; 230, mounting end face; 240, mounting cavity; 250, circular inner wall; 260, pushing protrusion; 300, side impact block body; 310, clamping part; 311, guide part; 312, retaining part; 400, limiting part; 410, limiting protrusion; 420, connecting bayonet. DETAILED DESCRIPTION

[0030] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application 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 operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0033] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0034] As shown in Figures 1-4, the present application provides a side impact block structure 100 suitable for a child safety seat, which includes a side impact block base 200 pre-set on the side of the child safety seat, and a side impact block body 300 detachably connected to the side impact block base. The side impact block body 300 is provided with a clamping portion 310, and the side impact block base 200 is provided with a coupling portion 210 for receiving the clamping portion 310. The clamping portion 310 is adapted to cooperate with the coupling portion 210 so that after the side impact block body 300 rotates about the axis of the side impact block base 200, the side impact block body 300 can be clamped and fixed with the side impact block base 200, thereby achieving a rotational clamping connection between the side impact block body 300 and the side impact block base 200. Therefore, the user only needs to manually rotate the side impact block body 300 to achieve the side impact block body 300 disassembly and assembly. This simplifies the disassembly and assembly method between the side impact block body 300 and the side impact block base 200 and improves the disassembly and assembly efficiency of the side impact block structure 100.

[0035] Specifically, as shown in Figures 4-5, the side impact block base 200 includes a mounting end face 230 that contacts the child safety seat and a limiting end face 220 that contacts the side impact block body 300. The side impact block base 200 is a cylindrical structure with a hollow interior. The mounting cavity 240 for accommodating the clamping portion 310 is arranged between the limiting end face 220 and the mounting end face 230. A mounting port 221 that communicates with the mounting cavity 240 is provided on the limiting end face 220. The mounting port 221 is capsule-shaped, and the clamping portion 310 can be inserted into the mounting cavity 240 through the mounting port 221. As shown in Figure 2-3, the clamping portion 310 includes a guide portion 311 extending axially along the side impact block body 300 and a retaining portion 312 extending radially along the side impact block body 300. The retaining portion 312 is arranged at an end of the guide portion 311 away from the side impact block body 300. The shape of the retaining portion 312 is adapted to the shape of the mounting port 221. The retaining portion 312 can be inserted into the mounting cavity 240 through the mounting port 221 and rotate around the axis of the side impact block base 200 within a certain angle range. The retaining portion 312 rotates 90° around the axis of the side impact block base 200 to cause the retaining portion 312 and the mounting port 221 to be staggered, thereby preventing the retaining portion 312 from exiting the mounting cavity 240 through the mounting port 221, ensuring that the side impact block body 300 can be fixedly installed on the side impact base. It is worth mentioning that there is an interference fit between the retaining portion 312 and the mounting cavity 240, which can improve the reliability of the rotational engagement and fixation between the coupling portion 210 and the clamping portion 310, and avoid the separation of the clamping portion 310 from the coupling portion 210 due to bumps during driving of the car, and the side impact block body 300 falling off from the side impact block base 200.

[0036] Of course, the shape of the mounting port 221 and the retaining portion 312 is not limited to a capsule shape, but can also be other shapes such as an ellipse or a triangle. The shape of the mounting port 221 and the retaining portion 312 is not limited, as long as the mounting port 221 and the retaining portion 312 can be misaligned after the retaining portion 312 rotates. Then, when the retaining portion 312 wants to withdraw from the mounting cavity 240, the retaining portion 312 forms a limiting fit with the limiting end face 220 to prevent the retaining portion 312 from withdrawing from the mounting cavity 240, so that the side impact block body 300 can be firmly installed on the side impact block base 200.

[0037] In other embodiments, the coupling portion 210 includes a first coupling surface and an inner concave surface formed by the first coupling surface being recessed inward, a first circular side wall is formed between the first coupling surface and the inner concave surface, and two or more first tenons are evenly arranged on the first circular side wall; the clamping portion 310 includes a second coupling surface and a convex surface formed by the second coupling surface convex outward, a second circular side wall is formed between the second coupling surface and the convex surface, and two or more second tenons are evenly arranged on the second circular side wall, the spacing between two adjacent first tenons along the arc direction of the first circular side wall is greater than or equal to the length of the second tenon along the arc direction of the second circular inner wall 250, and the spacing between two adjacent second tenons along the arc direction of the second circular side wall is greater than or equal to the length of the first tenon along the arc direction of the first circular side wall, and then after the coupling portion 210 and the clamping portion 310 are plugged into each other and rotated, the first tenon and the second tenon are engaged with each other, and the first coupling surface and the second coupling surface are in contact with each other, so that the side impact block body 300 can be rotatably engaged and fixed with the side impact block base 200.

[0038] It is worth mentioning that the positions of the coupling portion 210 and the clamping portion 310 can be interchanged, that is, the coupling portion 210 is arranged on the side impact block body 300 , and the clamping portion 310 is arranged on the side impact block base 200 .

[0039] The side impact block structure 100 provided herein further includes a limiting portion 400, which is adapted to limit the position of the engaging portion 310, thereby restricting the engaging portion 310 from rotating about the axis of the side impact block base 200 after the side impact block body 300 is engaged and fixed with the side impact block base 200. The limiting portion 400 may be disposed within the coupling portion 210 or on the engaging portion 310.

[0040] As shown in FIG6 , in some embodiments, a circular inner wall 250 is formed around the mounting cavity 240, and a limiting portion 400 is disposed on the circular inner wall 250. The limiting portion 400 specifically includes two limiting protrusions 410. The two limiting protrusions 410 are symmetrically disposed on the circular inner wall 250 with the axis of the circular inner wall 250 as the center. The line connecting the two limiting protrusions 410 forms an angle of 90° with the mounting opening 221. Of course, this embodiment does not limit the specific degree of the angle, and the 90° angle is merely a preferred embodiment.

[0041] The limiting protrusion 410 is adapted to engage with the retaining portion 312, thereby locking the retaining portion 312 when the external force does not exceed a preset value, preventing the retaining portion 312 from rotating about the axis of the side impact block base 200 to a position aligned with the mounting opening 221. This prevents the retaining portion 312 from rotating due to bumps during vehicle driving, thereby improving the reliability of the rotational engagement between the clamping portion 310 and the coupling portion 210. Furthermore, during the process of rotational engagement between the clamping portion 310 and the coupling portion 210, the retaining portion 312 abuts against the limiting protrusion 410 and slides into a fixed position via the surface of the limiting protrusion 410. The limiting protrusion 410 generates a feedback, allowing the user to feel a "click" of engagement. The user can use this sense of engagement to determine whether the clamping portion 310 and the coupling portion 210 are rotationally engaged.

[0042] In other embodiments, as shown in Figures 2-4, the limiting portion 400 includes two connecting bayonet holes 420 and two connecting card blocks. The two connecting bayonet holes 420 are arranged on both sides of the mounting hole 221 on the limiting end face 220, and the two connecting card blocks are arranged on the side of the retaining portion 312 close to the limiting end face 220. The positions of the two connecting bayonet holes 420 and the two connecting card blocks correspond one to one. When the clamping portion 310 and the coupling portion 210 are plugged into each other and rotated to a fixed engaging position, the connecting bayonet holes 420 engage with the connecting card blocks, so that the clamping portion 310 and the coupling portion 210 can be fixed when the external force does not exceed the preset position. When the value is set, the retaining portion 312 is locked, so that the retaining portion 312 cannot rotate around the axis of the side impact block base 200 under the action of a relatively small force. This prevents the retaining portion 312 from rotating around the axis of the side impact block base 200 to a position aligned with the mounting opening 221 during the use of the side impact block structure 100 due to the bumps generated by the vehicle's driving. As a result, the retaining portion 312 can be withdrawn from the mounting cavity 240 through the mounting opening 221, and the side impact block body 300 is separated from the side impact block base 200, which is unable to provide side impact protection for the child safety seat. Similarly, the engagement of the connecting bayonet 420 and the connecting bayonet will also provide the user with a sense of engagement, and the user can then know through the sense of engagement whether the engaging portion 310 and the coupling portion 210 are rotated and engaged in place.

[0043] In the above embodiment, a pushing protrusion 260 is further provided at the bottom of the mounting cavity 240 near the mounting end surface 230. The pushing protrusion 260 can undergo elastic deformation and continuously exert a force on the retaining portion 312 inserted into the mounting cavity 240 to move in the direction of the side impact block body 300, thereby pushing the retaining portion 312 against the limiting end surface 220, increasing the friction between the retaining portion 312 and the limiting end surface 220, thereby increasing the force required to rotate the retaining portion 312 and improving the reliability of the rotational engagement between the side impact block body 300 and the side impact block base 200. Of course, when the retaining portion 312 rotates to a position aligned with the mounting opening 221, the pushing protrusion 260 can also push the retaining portion 312 out of the mounting cavity 240, causing the retaining portion 312 to automatically pop out, making it easier for the user to remove the side impact block body 300.

[0044] During operation: as shown in Figures 2-4 and 9-10, the clamping portion 310 on the side impact block main body 300 is inserted into the installation cavity 240 through the installation opening 221 on the side impact block base 200, and the side impact block main body 300 is rotated so that the retaining portion 312 on the clamping portion 310 is staggered with the installation opening 221, and then the retaining portion 312 and the limiting end face 220 are clamped and limited, so that the retaining portion 312 cannot be moved out of the opening on the side impact block base 200, that is, the side impact block main body 300 can be rotated and engaged on the side impact block base 200 through the matching clamping of the retaining portion 312 and the limiting end face 220, so that the side impact block main body 300 can be rotated and engaged on the side impact block base 200, thereby being fixedly installed on the side of the child safety seat, forming side protection for the child safety seat. As shown in Figures 2-4 and 7-8, when the side impact block body 300 needs to be disassembled, the retaining portion 312 is rotated to a position aligned with the mounting opening 221 by rotating the clamping portion 310 again, and the retaining portion 312 can be removed from the mounting opening 221, thereby disengaging the side impact block body 300 from the side impact block base 200, and removing the side impact block body 300 from the child safety seat.

[0045] In addition, a limiting portion 400 is provided on the side impact block body 300 or the side impact base. The limiting portion 400 can limit the side clamping portion 310 and lock the clamping portion 310 when the external force does not exceed a preset value, so that the retaining portion 312 on the clamping portion 310 cannot rotate around the axis of the side impact block base 200, thereby preventing the bumps during the driving of the car from causing the retaining portion 312 to rotate around the axis of the side impact block base 200 to a position aligned with the mounting port 221, further separating the clamping portion 310 from the coupling portion 210, and the side impact block body 300 detaches from the side impact block base 200, making it unable to protect the child safety seat.

[0046] Another aspect of the present application is to provide a child safety seat, which includes the side impact block structure 100 in the above embodiments. The side impact block structure 100 is arranged on both sides of the child safety seat, thereby forming side protection for the child safety seat.

[0047] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A side impact block structure, comprising a side impact block base mounted on the side of a child safety seat, and a side impact block body detachably connected to the side impact block base, characterized in that: A clamping portion is provided on the side impact block body, and a coupling portion for inserting the clamping portion is provided on the side impact block base, and the clamping portion is suitable for cooperating with the coupling portion so that the side impact block body can be rotated around the axis of the side impact block base and then be clamped and fixed with the side impact block base. The side impact block structure also includes a limiting portion, which is suitable for limiting the clamping portion to limit the rotation of the clamping portion around the axis of the side impact block base after the side impact block body is clamped and fixed with the side impact block base.

2. The side impact block structure according to claim 1, characterized in that: The side impact block base includes a mounting end face in contact with the child safety seat and a limiting end face in contact with the side impact block body, a hollow mounting cavity is arranged between the mounting end face and the limiting end face, a mounting opening communicating with the mounting cavity is opened on the limiting end face, the combining portion includes the mounting cavity and the mounting opening, the clamping portion can be inserted into the mounting cavity through the mounting opening, and rotate around the axis of the side impact block base in the mounting cavity, so as to realize the rotational engagement between the clamping portion and the combining portion.

3. The side impact block structure according to claim 2, characterized in that: The clamping portion includes a guide portion extending axially along the side impact block body and a retaining portion extending radially along the side impact block body. The shape of the retaining portion is adapted to the shape of the mounting port. Then, after the clamping portion and the combining portion are plugged into and rotated with each other, the retaining portion and the mounting port are staggered, and the retaining portion forms a limiting fit with the limiting end face to prevent the retaining portion from withdrawing from the mounting cavity.

4. The side impact block structure according to claim 3, characterized in that: When the retaining portion is rotated to the engaging and fixing position, the retaining portion is interference fit with the mounting cavity.

5. The side impact block structure according to any one of claims 3-4, characterized in that: The limiting portion is arranged in the combining portion or on the clamping portion.

6. The side impact block structure according to claim 5, characterized in that: The installation cavity is surrounded by a circular side wall, the limiting portion is arranged on the circular side wall, and the limiting portion is suitable for engaging with the retaining portion to limit the rotation of the retaining portion around the axis of the side impact block base when the external force does not exceed a preset value.

7. The side impact block structure according to claim 6, characterized in that: The limiting portion includes two limiting protrusions, and the two limiting protrusions are symmetrically arranged on the circular side wall with the axis of the circular side wall as the center.

8. The side impact block structure according to claim 5, characterized in that: The limiting portion includes a connecting bayonet and a connecting block, the connecting bayonet is opened on the limiting end face, and the connecting block is arranged on the retaining portion. When the clamping portion and the combining portion are rotationally engaged, the connecting block engages with the connecting bayonet, thereby limiting the rotation of the retaining portion around the axis of the side impact block base when the external force does not exceed a preset value.

9. The side impact block structure according to claim 8, characterized in that: A pushing protrusion is also provided at the bottom of the installation cavity near the installation end surface, and the pushing protrusion is arranged toward the installation port. The pushing protrusion can undergo elastic deformation to continuously apply a force to the retaining part in the installation cavity to move in the direction of the side impact block body, thereby pushing the retaining part out of the installation cavity or pushing the retaining part onto the limiting end surface.

10. A child safety seat, characterized in that: It comprises a side impact block structure as described in any one of claims 1-9.

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