Child safety seat with side impact protection

Abstract

The present application discloses a child safety seat with side impact protection, which comprises a seat, a backrest and a side impact protection device outside the side wing. The side impact protection device comprises a base and a movable impact buffer block. The impact buffer block protrudes from the cavity of the base, and the impact surface of the impact buffer block is obliquely protruded from the reference surface. When the vehicle collides, the impact surface of the impact buffer block serves as the force bearing surface when the vehicle body collides, and the energy generated by the collision is absorbed by the impact buffer block, avoiding the direct collision of the seat body with the vehicle body. When the impact buffer block is broken due to the collision, the vehicle body further collides with the base, which serves as a secondary buffer at this time. The secondary impact buffer further increases the safety of the seat body. Moreover, the above-mentioned mechanism has fewer parts, a clever structure and a low production cost, and is easy to popularize.

Description

Technical Field

[0001] This invention relates to a child safety seat, and more particularly to a side impact protection device for a child safety seat, which can effectively buffer the side impact force when a car is involved in a side collision. Background Technology

[0002] A child safety seat is a seat specifically designed for children of different weights (or age groups) and installed in a car to effectively improve children's safety while traveling. For example, in the event of emergency braking or a forward collision, a child safety seat can reduce the impact force on the child and effectively prevent the child's body from moving forward rapidly, thus avoiding secondary collisions.

[0003] However, when a car is involved in a side collision, existing child safety seats rely solely on their backrest and headrest wings to protect the child's body and head, which provides relatively weak protection.

[0004] A side-impact protection mechanism, disclosed in application publication number CN105329121A, includes a side protection block and a protective component. One end of the side protection block is pivotally connected to the side wing, and the protective component is slidably disposed at the other end of the side protection block. The side protection block is pivotable between an active state and a retracted state. When the side protection block is pivoted away from the side wing and in the active state, the protective component protrudes from the side of the side protection block and is positioned between the side wing and the side protection block. When the side protection block is pivoted to be close to the side wing and in the retracted state, the protective component retracts into the side of the side protection block. In the event of a vehicle collision, the side protection block collides with the vehicle body first, thereby better protecting the safety of children.

[0005] This side-impact protection mechanism has a relatively complex structure and high cost. Summary of the Invention

[0006] In view of the problems of complex structure and high cost of existing side impact protection mechanisms, the present invention aims to provide a side impact protection device for a child safety seat with fewer parts and simpler structure.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a child safety seat with side impact protection, characterized in that it includes a seat and a backrest, the backrest includes two side wings, and at least one side wing is provided with a side impact protection device on its outer side; the side impact protection device includes a base installed on the side wing of the seat by fasteners and a movable plastic impact buffer block;

[0008] The base includes a reference surface facing the vehicle body after installation. The reference surface protrudes from the side wing surface as a secondary impact surface. The base has a cavity to accommodate the impact buffer block.

[0009] The impact-resistant buffer block includes an impact-resistant surface facing the vehicle body;

[0010] The rear end of the impact buffer block is rotatably connected to the base, and the front end of the impact buffer block is provided with an upper support groove and a lower support groove. The front end of the cavity is provided with a support plate that can be inserted into the upper support groove or the lower support groove.

[0011] In the stored state, when the lower support groove of the impact buffer block is restricted by the support plate, the impact buffer block is accommodated in the base cavity, and the impact surface of the impact buffer block is flush with the reference surface of the base.

[0012] In use, when the upper support groove of the impact buffer block is restricted by the support plate, the impact buffer block protrudes from the base cavity and the impact surface of the impact buffer block protrudes obliquely from the reference surface. The impact surface forms a certain angle with the reference surface, and the impact surface serves as the force-bearing surface when the vehicle body collides.

[0013] A tension spring is provided between the impact buffer block and the base. The tension spring allows the upper and lower support slots of the impact buffer block to switch elastically to cooperate with the support plate on the base. The tension spring can keep the impact buffer block in a working state that protrudes from the base or in a storage state that is accommodated in the groove.

[0014] A further preferred embodiment of the present invention is that the reference surface on the base is approximately flat, and the impact surface of the impact buffer block is flat.

[0015] A further preferred embodiment of the present invention is as follows: a first spring connecting plate is provided at the rear center of the impact buffer block, a second spring connecting plate is provided at the front end of the base, and the tension spring is connected between the first spring connecting plate and the second spring connecting plate.

[0016] A further preferred embodiment of the present invention is that the concave cavity is shallower at the back and deeper at the front within the base, and the impact-bearing buffer block is thinner at the back and thicker at the front.

[0017] When the impact buffer block rotates and switches, the rear end of the impact buffer block is always located inside the rear end of the cavity, and the front end of the impact buffer block is accommodated or protrudes from the front end of the cavity.

[0018] A further preferred embodiment of the present invention is as follows: the rear end sidewall of the base cavity is provided with a shaft connection hole, and the rear ends of the impact buffer block are provided with shaft connection protrusions for inserting into the shaft connection hole.

[0019] A further preferred embodiment of the present invention is that the base cavity and the rear end of the impact buffer block are provided with a limiting structure to restrict the rotation of the impact buffer block within the cavity.

[0020] A further preferred embodiment of the present invention is as follows: when the impact buffer block is stored, a distance is left between the front end of the impact-bearing front of the impact-bearing buffer block and the front end of the cavity, so as to form a recessed area above the shelf for hand operation to move the impact buffer block.

[0021] A further preferred embodiment of the present invention is: a connecting base is provided on the back of the base, and the connecting screw post is provided on the base.

[0022] A further preferred embodiment of the present invention is as follows: the impact-bearing surface of the impact-bearing buffer block protrudes forward to form an upper protrusion, and the bottom of the front end of the impact-bearing buffer block is provided with a lower protrusion extending forward; the middle part of the front end of the impact-bearing buffer block protrudes forward to form a middle protrusion.

[0023] An upper support groove is formed between the upper protrusion and the middle protrusion, and a lower support groove is formed between the middle protrusion and the lower protrusion.

[0024] A further preferred embodiment of the present invention is as follows: the limiting structure includes a limiting strip at the rear end of the base cavity, a longitudinal limiting plate and a transverse limiting plate at the rear end of the impact buffer block; during the unfolding of the impact buffer block, the limiting strip sequentially limits each other with the longitudinal limiting plate and the transverse limiting plate.

[0025] Compared with the prior art, the advantage of the present invention is that the impact buffer block protrudes from the base cavity and the impact surface of the impact buffer block protrudes obliquely from the reference surface; when the vehicle collides, the impact surface of the impact buffer block serves as the force-bearing surface when the vehicle body collides, and the energy generated by the collision is absorbed by the impact buffer block, thus preventing the seat body from being directly impacted by the vehicle body.

[0026] The impact buffer block serves as the primary buffer in a vehicle collision. If the impact buffer block breaks due to a collision, and the vehicle body further impacts the base, the base acts as a secondary buffer. This secondary impact buffer further increases the safety of the seat body.

[0027] The side impact protection device of the present invention has fewer parts and a clever structure. The protrusion and retraction of the impact buffer block can be achieved by its cooperation with the slot structure of the base, and the impact buffer block is kept in the protrusion and retraction state by a spring. It has low production cost and is easy to promote. Attached Figure Description

[0028] Figure 1 A schematic diagram of the overall structure of a child safety seat;

[0029] Figure 2 Front view illustration of a child safety seat Figure 1 ;

[0030] Figure 3 Front view illustration of a child safety seat Figure 2 ;

[0031] Figure 4 This is a schematic diagram showing the side impact protection device in use.

[0032] Figure 5 This is a schematic diagram showing the side impact protection device in its stowed state.

[0033] Figure 6 Schematic diagram of a partial structure of a side impact protection device Figure 1 ;

[0034] Figure 7 Schematic diagram of a partial structure of a side impact protection device Figure 2 ;

[0035] Figure 8 This is a schematic diagram of the back structure of the side impact protection device;

[0036] Figure 9 Cross-sectional view of the side impact protection device in its stored state;

[0037] Figure 10 Cross-sectional view of the side impact protection device switching status;

[0038] Figure 11 A sectional view showing the status of a side impact protection device;

[0039] Figure 12 This is a schematic diagram of the base structure of the side impact protection device;

[0040] Figure 13 This is a schematic diagram of the overall structure of the impact-resistant buffer block;

[0041] Figure 14 This is a schematic diagram of the overall structure of a tension spring. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0043] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of the invention.

[0044] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0045] like Figures 1 to 3The diagram shown is of the child safety seat 100 in this embodiment. The child safety seat 100 includes a seat 20 and a backrest 10. The backrest 10 includes two side wings 12. The side wings 12 are close to the inner wall of the vehicle. When the vehicle body is involved in an accidental collision, the side wings 12 are likely to collide with the inner wall of the vehicle. Therefore, this technical concept considers installing a side impact protection device 30 on the outside of the side wings 12. The specific structure is as follows:

[0046] Such as 4 and Figure 5 The figures shown are schematic diagrams of the side impact protection device 30 in the present invention in its unfolded and retracted states. The side impact protection device 30 includes a base 31 for fixed installation on the side wing 12 of the seat and a movable impact buffer block 32.

[0047] The base 31 includes a reference surface s1 facing the vehicle body after installation, and a cavity h0 is provided in the base 31 to accommodate the impact buffer block 32; the impact buffer block 32 includes an impact surface s2 facing the vehicle body.

[0048] like Figures 6 to 13 As shown, the rear end of the impact buffer block 32 is rotatably connected to the base 31. The front end of the impact buffer block 32 is provided with an upper support groove h1 and a lower support groove h2. The front end of the recess h0 of the base 31 is provided with a support plate f.

[0049] like Figure 9 As shown, when the impact buffer block 32 is in the storage state, the lower support groove h2 of the impact buffer block 32 is restricted by the support plate f. At this time, the impact buffer block 32 is contained in the cavity h0 of the base 31, and the impact surface s2 of the impact buffer block 32 is flush with the reference surface s1 of the base 31.

[0050] like Figure 10 As shown, when it is necessary to change the position of the impact buffer block 32, an external force can be applied to the impact buffer block 32 in the direction of the shaft connection end and upward to rotate the impact buffer block 32 and lift it up, so that the shelf plate f is finally inserted into the lower shelf groove h2.

[0051] like Figure 11 As shown, in the unfolded state, i.e., the usage state, when the upper support groove h1 of the impact buffer block 32 is restricted by the support plate f, the impact buffer block 32 protrudes from the cavity h0 of the base 31, and the impact-bearing surface s2 of the impact buffer block 32 protrudes obliquely from the reference surface s1. At this time, the impact-bearing surface s2 forms a certain angle with the reference surface s1, and the impact-bearing surface s2 serves as the force-bearing surface when the vehicle body collides. Figure 3 As shown, when the side wing 12 collides with the inner wall of the vehicle body, the impact buffer block 32 can first collide with the inner wall of the vehicle body to play a buffering role.

[0052] The advantage of this invention is that the impact buffer block 32 protrudes from the recess h0 of the base 31, and the impact surface s2 of the impact buffer block 32 protrudes obliquely from the reference surface s1; when the vehicle collides, the impact surface s2 of the impact buffer block 32 serves as the force-bearing surface when the vehicle body collides, and the energy generated by the collision is absorbed by the impact buffer block 32, thus preventing the seat body from being directly impacted by the vehicle body.

[0053] The impact buffer block 32 serves as the primary buffer in a vehicle collision. If the impact buffer block 32 is damaged in a collision and the vehicle body further impacts the base 31, the base 31 then serves as the secondary buffer. This secondary collision buffer further increases the safety of the seat body.

[0054] The side impact protection device 30 of the present invention has fewer parts and a clever structure. The protrusion and retraction of the impact buffer block 32 can be achieved by its cooperation with the slot structure of the base 31, and the impact buffer block 32 is kept in the protrusion and retraction state by the tension spring r. It has low production cost and is easy to promote.

[0055] The reference surface s1 on the base 31 is approximately flat, and the impact surface s2 of the impact buffer block 32 is flat. For example... Figure 5 As shown, when the impact surface s2 of the impact buffer block 32 is flush with the reference surface s1 of the base 31, a relatively flat and continuous plane is formed, which is more integrated and complete.

[0056] Preferably, a first limiting member v1 extends downward from the upper outer edge of the lower shelf groove h2, and a second limiting member v2 extends upward from the outer end of the shelf plate f. When the shelf plate f is inserted into the lower shelf groove h2, the first limiting member v1 and the second limiting member v2 mutually restrict each other, preventing the shelf plate f from detaching from the lower shelf groove h2. Furthermore, in this usage state, the lower end face of the first limiting member v1 rests on the upper surface of the shelf plate f.

[0057] More specifically, a tension spring r is provided between the impact buffer block 32 and the base 31. The tension spring r can elastically switch between the upper support groove h1 and the lower support groove h2 of the impact buffer block 32 and the support plate f on the base 31, so as to further switch the impact buffer block 32 between the use state and the storage state.

[0058] During installation, a first spring connecting plate r1 is provided at the rear center of the impact buffer block 32, and a second spring connecting plate r2 is provided at the front end of the base 31. The tension spring r is connected between the first spring connecting plate r1 and the second spring connecting plate r2.

[0059] The upper wall of the impact buffer block 32 extends outward to form a toggle element. During operation, the user can toggle the toggle element of the impact buffer block 32 and apply force upward and outward to the impact buffer block 32 with the shaft end as the rotation point, so that it is lifted upward until the shelf plate f is aligned with the lower shelf groove h2. At this time, the external force is removed, and the impact buffer block 32 will move inward under the action of the rebound force of the tension spring r until the shelf plate f is inserted into the lower shelf groove h2, and the impact buffer block 32 is in the unfolded state.

[0060] Regarding the specific structure of the resting groove, it should be noted that the impact-bearing surface s2 of the impact-bearing buffer block 32 extends forward to form an upper protrusion, which is the aforementioned actuating element; the bottom of the front end of the impact-bearing buffer block 32 is provided with a lower protrusion extending forward; the middle part of the front end of the impact-bearing buffer block 32 protrudes forward to form a middle protrusion; an upper resting groove h1 is formed between the upper protrusion and the middle protrusion, and a lower resting groove h2 is formed between the middle protrusion and the lower protrusion.

[0061] Preferably, in this embodiment, the concave cavity h0 is shallower at the back and deeper at the front within the base 31, and the impact buffer block 32 is thinner at the back and thicker at the front. When the impact buffer block 32 rotates and switches, the rear end of the impact buffer block 32 is always located within the rear end of the concave cavity h0, and the front end of the impact buffer block 32 is accommodated or protrudes from the front end of the concave cavity h0.

[0062] Regarding the axial connection fixing structure between the impact buffer block 32 and the base 31, such as Figure 12 and Figure 13 As shown, the rear end sidewall of the base cavity h0 is provided with a shaft connection hole t2, and the rear ends of the impact buffer block 32 are provided with shaft connection protrusions t1 for insertion into the shaft connection hole. Preferably, the shaft connection hole t2 is an oblong shaft connection hole, and the shaft connection protrusion t can not only rotate within the shaft connection hole t2, but also move back and forth a certain distance.

[0063] Preferably, a limiting structure g is provided at the rear end of the base cavity h0 and the impact buffer block 32 to limit the rotation of the impact buffer block 32 within the cavity h0. Figures 9 to 11 As shown, the limiting structure g includes a limiting strip g1 at the rear end of the cavity h0 of the base 31, a longitudinal limiting plate g2 at the rear end of the impact buffer block 32, and a transverse limiting plate g3. During the actual application of external force to rotate the impact buffer block 32, as... Figure 10 As shown, the limiting bar g1 and the longitudinal limiting plate g2 abut against each other to prevent the impact buffer block 32 from moving too far backward. The limiting bar g1 and the transverse limiting plate g3 abut against each other to prevent the impact buffer block 32 from lifting too high, so that the shelf plate f can be aligned with the lower shelf slot h2 more quickly, thereby improving the speed of the impact buffer block 32's state switching.

[0064] When the impact-bearing buffer block 32 is stored, a distance is left between the front end of the impact-bearing surface s2 of the impact-bearing buffer block 32 and the front end of the cavity h0 to form a recessed area f0 above the shelf f. The front wall forming the recessed area f0 has an inclined surface to enlarge the diameter of the recessed area f0, so as to facilitate manual operation of the impact-bearing buffer block 32. Moreover, the inclined direction of the inclined surface is consistent with the partial direction of the force, which has a certain identification function and improves the efficiency of human-machine cooperation.

[0065] A connecting base 40 is provided on the back of the base 31, and a connecting screw post 41 is provided on the base 40. The base 31 is fixed to the side wing 12 by the screw post 41.

[0066] The present invention aims to illustrate that the impact buffer block 32 protrudes from the recess h0 of the base 31, and the impact surface s2 of the impact buffer block 32 protrudes obliquely from the reference surface s1; when a vehicle collision occurs, the impact surface s2 of the impact buffer block 32 serves as the force-bearing surface when the vehicle body collides, and the energy generated by the collision is absorbed by the impact buffer block 32, thus preventing the seat body from being directly impacted by the vehicle body.

[0067] The impact buffer block 32 serves as the primary buffer in a vehicle collision. If the impact buffer block 32 is damaged in a collision and the vehicle body further impacts the base 31, the base 31 then serves as the secondary buffer. This secondary collision buffer further increases the safety of the seat body.

[0068] The side impact protection device 30 of the present invention has fewer parts and a clever structure. The protrusion and retraction of the impact buffer block 32 can be achieved by its cooperation with the slot structure of the base 31, and the impact buffer block 32 is kept in the protrusion and retraction state by the tension spring r. It has low production cost and is easy to promote.

[0069] Preferably, the base 31 and the impact buffer block 32 of the side impact protection device 30 in this embodiment are made of plastic material.

[0070] The foregoing has provided a detailed description of the child safety seat with side-impact protection device provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand this invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A child safety seat with side impact protection, characterized in that... The chair includes a seat and a backrest, the backrest having two side wings, and at least one side wing having a side impact protection device on its outer side; The side impact protection device includes a base mounted on the side wing of the seat by fasteners and a movable plastic impact buffer block; The base includes a reference surface facing the vehicle body after installation. The reference surface protrudes from the side wing surface as a secondary impact surface. The base has a cavity to accommodate the impact buffer block. The impact-resistant buffer block includes an impact-resistant surface facing the vehicle body; The rear end of the impact buffer block is rotatably connected to the base, and the front end of the impact buffer block is provided with an upper support groove and a lower support groove. The front end of the cavity is provided with a support plate that can be inserted into the upper support groove or the lower support groove. In the stored state, when the lower support groove of the impact buffer block is restricted by the support plate, the impact buffer block is accommodated in the base cavity, and the impact surface of the impact buffer block is flush with the reference surface of the base. In use, when the upper support groove of the impact buffer block is restricted by the support plate, the impact buffer block protrudes from the base cavity and the impact surface of the impact buffer block protrudes obliquely from the reference surface. The impact surface forms an angle with the reference surface and serves as the force-bearing surface when the vehicle body collides. A tension spring is provided between the impact buffer block and the base. The tension spring allows the upper and lower support slots of the impact buffer block to switch elastically to cooperate with the support plate on the base. The tension spring can keep the impact buffer block in a working state that protrudes from the base or in a storage state that is accommodated in the groove.

2. The child safety seat with side impact protection according to claim 1, characterized in that... The reference surface on the base is a plane, and the impact surface of the impact buffer block is a plane.

3. The child safety seat with side impact protection according to claim 1, characterized in that... The impact buffer block has a first spring connecting plate located at the rear center, and the base has a second spring connecting plate located at the front end. The tension spring is connected between the first spring connecting plate and the second spring connecting plate.

4. The child safety seat with side impact protection according to claim 1, characterized in that... The cavity inside the base is shallower at the back and deeper at the front, and the impact buffer block is thinner at the back and thicker at the front. When the impact buffer block rotates and switches, the rear end of the impact buffer block is always located inside the rear end of the cavity, and the front end of the impact buffer block is accommodated or protrudes from the front end of the cavity.

5. The child safety seat with side impact protection according to claim 1, characterized in that... The rear side wall of the base cavity is provided with a shaft connection hole, and the rear sides of the impact buffer block are provided with shaft connection protrusions for inserting into the shaft connection hole.

6. The child safety seat with side impact protection according to claim 5, characterized in that... The base cavity and the rear end of the impact buffer block are provided with a limiting structure to restrict the rotation of the impact buffer block within the cavity.

7. The child safety seat with side impact protection according to claim 1, characterized in that... When the impact buffer block is stored, a distance is left between the front end of the impact-bearing front of the impact-bearing buffer block and the front end of the cavity to form a recessed area above the shelf, which is used for hand operation to operate the impact buffer block.

8. The child safety seat with side impact protection according to claim 1, characterized in that... The base has a connecting base on its back, and the base has screw posts for connection.

9. The child safety seat with side impact protection according to claim 1, characterized in that... The impact-bearing buffer block has an impact-bearing surface that protrudes forward to form an upper protrusion, and the bottom of the front end of the impact-bearing buffer block has a lower protrusion that extends forward; the middle of the front end of the impact-bearing buffer block protrudes forward to form a middle protrusion. An upper support groove is formed between the upper protrusion and the middle protrusion, and a lower support groove is formed between the middle protrusion and the lower protrusion.

10. The child safety seat with side impact protection according to claim 6, characterized in that... The limiting structure includes a limiting strip at the rear end of the base cavity, a longitudinal limiting plate at the rear end of the impact buffer block, and a transverse limiting plate; during the unfolding of the impact buffer block, the limiting strip sequentially limits each other with the longitudinal limiting plate and the transverse limiting plate.

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