Quick-release seat back and a new-born baby seat

Abstract

The utility model discloses a quick detachable seat back and newborn seat belongs to children's articles technical field. Include: backrest mounting bracket and backrest, the quick detachable structure is connected between both, and the quick detachable structure includes: locking piece, it sets up in the backrest, and locking piece has the elastic pressing plate, unlocking button, it sets up in the backrest mounting bracket, and unlocking button has the unlocking buckle that extends to the direction of the elastic pressing plate and is at, and the elastic pressing plate has the unlocking slope, and the unlocking buckle has the guide slope that matches with unlocking slope, when the backrest is in the locking state, and the elastic pressing plate abuts at the unlocking buckle and locks, when pressing unlocking button, the unlocking buckle promotes the elastic pressing plate and makes it slide along the guide slope, until the elastic pressing plate separates from the extrusion contact with unlocking buckle and sets up on the unlocking buckle to unlock to upwards. Adopt the quick detachable mechanism of slope sliding and elastic deformation cooperation effect, cooperate single point press unlocking design, need not tool to complete the release of locking, improve backrest dismounting efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of children's products technology, specifically relating to quick-release seat backrests and newborn seats. Background Technology

[0002] As newborns grow and develop, their body size, sitting posture needs, and safety requirements constantly change. Therefore, newborn car seats often need to have backrests of different heights, angles, or support structures that can be changed according to age to provide more fitting spinal support and a comfortable riding experience. This demand has driven the development of modular and replaceable seat back designs, and has placed higher demands on the quick disassembly and assembly, installation reliability, and user operation convenience of the backrest connection structure.

[0003] Currently, replaceable backrests on the market are mainly secured using two methods: fastener connections (such as screws and bolts) or snap-fit ​​connections. However, both of these traditional connection methods have significant technical drawbacks, making it difficult to simultaneously meet the requirements of efficient assembly and disassembly and safe and reliable use.

[0004] In order to ensure the firmness of the backrest installation, the fastener connection method usually requires setting screw holes in multiple locations (such as the top, middle and bottom) and fixing it by screwing in multiple screws. Although this multi-point fastening can effectively improve the overall structural strength and prevent loosening and falling off due to vibration or impact during use, it brings serious operational inconvenience: each time it is disassembled and assembled, multiple screws must be tightened or unscrewed one by one, which is cumbersome and time-consuming.

[0005] On the other hand, while snap-fit ​​connections enable tool-free, quick installation and offer a degree of convenience, they generally suffer from insufficient connection strength and poor locking reliability. Most snap-fits rely on the deformation of elastic arms to achieve insertion and locking, which can easily lead to material fatigue after long-term, repeated use, resulting in decreased snap-fit ​​strength, loosening, abnormal noises, or even accidental detachment, posing significant safety hazards. Utility Model Content

[0006] This utility model addresses the aforementioned problems in the existing technology by proposing a quick-release seat back and newborn seat that is easy to install and disassemble.

[0007] This utility model can be achieved through the following technical solutions:

[0008] A quick-release seat back includes:

[0009] The backrest mounting bracket and the backrest are connected by a quick-release structure, which includes:

[0010] A locking element is provided on the backrest, the locking element having a resilient pressure plate;

[0011] An unlock button is provided on the backrest mounting bracket, and the unlock button has an unlocking latch extending toward the direction of the elastic pressure plate;

[0012] The elastic pressure plate has an unlocking ramp, and the unlocking buckle has a guide ramp that matches the unlocking ramp;

[0013] When the backrest is in the locked state, the elastic pressure plate abuts against the unlocking buckle, and static friction is generated between the two to lock the backrest.

[0014] When the unlock button is pressed, the unlocking buckle pushes the elastic pressure plate and causes its unlocking ramp to slide along the guide ramp of the unlocking buckle until the elastic pressure plate moves upward away from the squeezing contact with the unlocking buckle and rests on the unlocking buckle, thereby releasing the locked state of the backrest.

[0015] As a further improvement of this utility model, the elastic pressure plate is arranged vertically, and the unlocking slope is located on the lower side of the elastic pressure plate.

[0016] As a further improvement of this utility model, the unlocking buckle is arranged in an L-shape and includes a horizontal part and a vertical part. The vertical part is located at the front end of the horizontal part facing the elastic pressure plate, and the guide slope is located on the high side of the vertical part.

[0017] As a further improvement of this utility model, when the backrest is in the locked state, the guide slope is separated from the unlocking slope, and the front end face of the vertical part abuts against the elastic pressure plate.

[0018] As a further improvement of this utility model, when the backrest is unlocked, the elastic pressure plate is mounted on the horizontal part of the unlocking buckle.

[0019] As a further improvement of this utility model, the inner end face of the backrest mounting bracket is provided with a mounting groove, and the backrest is partially or completely embedded in the mounting groove.

[0020] As a further improvement of this utility model, the backrest mounting bracket has a receiving groove, the unlocking button is disposed in the receiving groove, and a reset spring is provided between the unlocking button and the backrest mounting bracket.

[0021] As a further improvement of this utility model, the backrest and the backrest mounting bracket are also connected by fasteners.

[0022] As a further improvement of this utility model, the backrest is also provided with a pair of support brackets, and the two sides of the locking member are respectively nested and connected to the two support brackets.

[0023] A newborn car seat is also provided, including:

[0024] The support frame consists of front and rear support legs;

[0025] The aforementioned quick-release seat back;

[0026] The backrest mounting frame has connecting accessories at both ends that are integrally connected to it. The connecting accessories include a plug-in housing and a rotating joint. The plug-in housing is connected to the top of the front support leg, and the rotating joint is connected to the top of the rear support leg.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. Achieve efficient and convenient quick disassembly and assembly: Adopting a quick disassembly mechanism that combines inclined sliding and elastic deformation, along with a single-point press unlock design, the main lock can be released without tools; combined with the simplified process of only needing to remove two fasteners on both sides, it greatly reduces the complexity of operation and significantly improves disassembly and assembly efficiency, making it particularly suitable for scenarios where infant and toddler products need to be replaced or adapted for use at different stages.

[0029] 2. Balancing high safety and reliable connection: The composite connection structure of "quick-release top lock + double-sided fastening" achieves multi-directional force distribution. The quick-release structure provides axial anti-loosening locking, while the fasteners bear the lateral shear force and torsional force, effectively preventing loosening or falling off due to vibration and impact during use, and ensuring the stability of the backrest and the safety of riding under dynamic conditions.

[0030] 3. Provide clear operational feedback and optimize human-machine experience: The inclined sliding combined with the deformation process of the elastic pressure plate brings a clear "click" feedback and changes in unlocking resistance, allowing users to intuitively perceive whether the installation is in place or whether the unlocking is complete; the overall embedded design of the structure has a simple appearance with no exposed buckles or sharp parts, avoiding the risk of scratches and improving the product's aesthetics and user-friendliness. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of the quick-release seat back of this utility model;

[0032] Figure 2 This is a schematic diagram showing the positions of the locking component and the unlocking button of this utility model;

[0033] Figure 3 This is the utility model Figure 2 A magnified view of a section at point A in the middle;

[0034] Figure 4 This is the utility model Figure 1 A structural diagram from another perspective;

[0035] Figure 5 This is a structural schematic diagram of the newborn car seat of this utility model;

[0036] Figure 6 This is a structural schematic diagram of a newborn seat using a different backrest according to this utility model;

[0037] Figure 7 This is a structural diagram of a quick-release seat back when using a different type of backrest according to this utility model.

[0038] In the diagram, 100 is the backrest mounting bracket; 110 is the mounting slot; 120 is the insert housing; and 130 is the rotating joint.

[0039] 200. Backrest; 210. Support bracket;

[0040] 300. Locking component; 310. Elastic pressure plate; 311. Unlocking ramp;

[0041] 400. Unlock button; 410. Unlock latch; 411. Guide slope;

[0042] 500. Front support leg; 510. Rear support leg. Detailed Implementation

[0043] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0044] like Figures 1-7 As shown, this utility model provides a quick-release seat back, comprising:

[0045] The backrest mounting bracket 100 and the backrest 200 are connected by a quick-release mechanism, which includes:

[0046] A locking element 300 is disposed on the backrest 200, and the locking element 300 has an elastic pressure plate 310;

[0047] An unlock button 400 is provided on the backrest mounting bracket 100, and the unlock button 400 has an unlocking latch 410 extending toward the direction of the elastic pressure plate 310;

[0048] Among them, the elastic pressure plate 310 has an unlocking slope 311, and the unlocking buckle 410 has a guide slope 411 that matches the unlocking slope 311;

[0049] When the backrest 200 is in the locked state, the elastic pressure plate 310 abuts against the unlocking buckle 410, and static friction is generated between the two to lock the backrest 200.

[0050] When the unlock button 400 is pressed, the unlock buckle 410 pushes the elastic pressure plate 310 and causes its unlocking ramp 311 to slide along the guide ramp 411 of the unlock buckle 410 until the elastic pressure plate 310 moves upward away from the squeezing contact with the unlock buckle 410 and is mounted on the unlock buckle 410, thereby releasing the locked state of the backrest 200.

[0051] Specifically, this quick-release principle is based on the synergistic effect of inclined plane sliding and elastic deformation:

[0052] When installing the backrest 200, align it with the backrest mounting bracket 100 and push it in. The guide slope 411 of the unlocking buckle 410 contacts and presses against the unlocking slope 311 of the elastic pressure plate 310, forcing the elastic pressure plate 310 to undergo elastic deformation and make room. At this time, the elastic pressure plate 310 and the unlocking buckle 410 maintain pressure contact and form a stable static friction locking state.

[0053] When unlocking, press the unlock button 400 on the backrest 200, which will move the unlock buckle 410 forward. Its guide slope 411 will fit with the unlock slope 311 of the elastic pressure plate 310. The horizontal thrust will be converted into a vertical lifting force through the relative sliding between the slopes, which will force the elastic pressure plate 310 to lift up and finally be placed on the unlock buckle 410, thereby releasing the pressure on the backrest 200 and achieving quick disassembly.

[0054] In addition, to further improve the connection between the backrest 200 and the backrest mounting bracket 100, two fasteners are used on the left and right sides of the quick-release structure to connect the backrest 200 and the backrest mounting bracket 100. The fasteners, in conjunction with the locking mechanism of the quick-release structure, can ensure the connection of the backrest 200.

[0055] During disassembly, users only need to loosen or pull out the two fasteners, and then press the unlock button 400 to release the main lock of the quick-release structure and remove the backrest 200 as a whole. The operation process is logically clear and the steps are simplified. It retains the high reliability of the fastening connection and minimizes the complexity of disassembly and assembly, achieving a balance between safety and convenience.

[0056] Meanwhile, the number of fasteners has been reduced from the traditional multi-point fixing to only two-point fixing, avoiding tedious multi-point screw operations, greatly shortening the disassembly and assembly time, and improving user maintenance efficiency. It is especially suitable for parents' high-frequency operation needs in daily cleaning, changing cloth covers, or adapting the backrest to different growth stages.

[0057] It is worth mentioning that the quick-release seat back provided in this embodiment, through the organic combination of an innovative inclined guide quick-release structure and a screw fastening method, has the following advantages compared to traditional multi-screw or single-buckle connection solutions:

[0058] 1. Achieve efficient and convenient quick assembly and disassembly: Adopting a quick-release mechanism that combines inclined sliding and elastic deformation, along with a single-point press unlock design, the main lock can be released without tools; combined with the simplified process of only needing to remove two fasteners on both sides, it greatly reduces the complexity of operation and significantly improves the efficiency of assembly and disassembly, making it particularly suitable for infant and toddler products that require frequent cleaning, replacement, or adaptation to different stages of use.

[0059] 2. Balancing high safety and reliable connection: Through the composite connection structure of "quick-release top lock + double-sided fastening", multi-directional force distribution is achieved. The quick-release structure provides axial anti-loosening locking, and the fasteners bear the lateral shear force and torsional force, effectively preventing loosening or falling off due to vibration and impact during use, ensuring the stability and riding safety of the backrest 200 under dynamic working conditions.

[0060] 3. Provide clear operational feedback and optimize human-machine experience: The inclined sliding combined with the deformation process of the elastic pressure plate 310 brings a clear "click" feedback and changes in unlocking resistance, allowing users to intuitively perceive whether the installation is in place or whether the unlocking is complete; the overall embedded design of the structure has a simple appearance with no exposed buckles or sharp parts, avoiding the risk of scratches and improving the product's aesthetics and user-friendliness.

[0061] Preferably, the elastic pressure plate 310 is vertically arranged, the unlocking slope 311 is located on the lower side of the elastic pressure plate 310, the unlocking buckle 410 is arranged in an L-shape and includes a horizontal part and a vertical part, the vertical part is located at the front end of the horizontal part facing the elastic pressure plate 310, and the guide slope 411 is located on the higher side of the vertical part.

[0062] This layout allows the backrest 200 to be installed so that when the guide slope 411 of the unlocking buckle 410 contacts the unlocking slope 311 of the elastic pressure plate 310, the two slopes press against each other as the pushing action proceeds, forcing the elastic pressure plate 310 to elastically deform upwards and make way; after it is in place, the elastic pressure plate 310 falls back under the action of elastic force, and its front end face presses tightly against the front side of the vertical part of the unlocking buckle 410, forming a stable and reliable static friction locking state.

[0063] When unlocking, pressing the unlock button 400 moves the unlock buckle 410 forward, and the guide slope 411 pushes the unlock slope 311 to slide along the slope, efficiently converting the horizontal thrust into the vertical lifting force, and finally making the elastic pressure plate 310 completely disengage from the contact and be placed on the horizontal part of the unlock buckle 410, thus achieving complete unlocking.

[0064] The above-mentioned structural design is reasonable, with high space utilization, good mechanical transmission efficiency and self-locking stability. The vertically arranged elastic pressure plate 310 has a clear force direction, controllable deformation, and is not prone to lateral load or jamming. The L-shaped unlocking buckle 410 integrates guiding, pushing and supporting functions. After unlocking, it can support and hold the elastic pressure plate 310 to prevent it from rebounding and to ensure that the unlocked state is reliably maintained.

[0065] Meanwhile, the staggered arrangement of the ramps (unlocking ramp 311 on the lower side and guide ramp 411 on the higher side) optimizes the sliding path, reduces frictional resistance, and improves the smoothness of operation, allowing users to complete the unlocking action with less pressing force.

[0066] Preferably, the inner end face of the backrest mounting bracket 100 is provided with a mounting groove 110, and the backrest 200 is partially or completely embedded in the mounting groove 110. This design allows the backrest 200 to slide in along the mounting groove 110 during installation, achieving precise alignment, effectively avoiding installation offset or misalignment, and improving assembly efficiency and connection stability.

[0067] In addition, the embedded structure creates a flat and continuous transition surface between the backrest 200 and the backrest mounting bracket 100, making the overall appearance simpler and more beautiful. It eliminates the protrusions or gaps caused by traditional external connectors, which not only improves the product's texture but also avoids exposed sharp corners, reduces the risk of scratches, and improves the safety and comfort of use.

[0068] Preferably, the backrest mounting bracket 100 has a receiving groove, the unlock button 400 is disposed in the receiving groove, and a reset spring is provided between the unlock button 400 and the backrest mounting bracket 100. This structure partially or completely accommodates the unlock button 400 in the receiving groove, realizing the embedded layout of the component, effectively preventing accidental button touch, while avoiding damage or deformation caused by external collisions, and improving the overall neatness and safety of the appearance.

[0069] Meanwhile, the reset spring ensures that the unlock button 400 automatically returns to its initial position after being pressed, ensuring that the quick-release structure can quickly return to the lockable state after unlocking, providing accurate positioning and reliable locking preparation for the next installation.

[0070] In addition, the receiving groove guides and limits the movement of the unlock button 400, ensuring that it moves smoothly along a preset straight path, avoiding jamming, deflection or loosening during operation, and improving the smoothness and reliability of the operation feel.

[0071] Preferably, the backrest 200 is also provided with a pair of support brackets 210, and the two sides of the locking member 300 are nested and connected to the two support brackets 210 respectively. This structure significantly improves the installation firmness of the locking member 300 on the backrest mounting bracket 100 by forming a tight nested fit between the locking member 300 and the support brackets 210, so that it can maintain structural stability when subjected to repeated insertion and unlocking stress, and effectively prevent loosening or deformation caused by long-term use.

[0072] In addition, the top of the support bracket 210 is provided with a threading opening for threading a safety belt to restrain the position of the newborn and ensure his safety.

[0073] This utility model also provides a newborn car seat, comprising:

[0074] The support frame consists of a front support leg 500 and a rear support leg 510;

[0075] The aforementioned quick-release seat backrest 200;

[0076] The backrest mounting bracket 100 has connecting accessories at both ends that are integrally connected to it. The connecting accessories include a plug-in housing 120 and a rotating joint 130.

[0077] The top of the plug-in housing 120 and the front outrigger 500 are connected by a plug-in method, which enables quick positioning and stable fixation. No tools are required during assembly, making the operation simple.

[0078] The rotating joint 130 is hinged to the top of the rear support leg 510. The rotating joint 130 serves as the core moving pivot during the folding process of the support frame, allowing the front support leg 500 and the rear support leg 510 to rotate relative to each other, thereby realizing the folding of the entire support frame.

[0079] This design allows the newborn seat to be quickly folded and stored when not in use, greatly reducing its space occupation and making it easy to carry and store. It is especially suitable for family travel, car placement, or storage in small spaces.

[0080] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0081] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0082] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0083] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0084] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A quick-release seat back, characterized in that, include: The backrest mounting bracket and the backrest are connected by a quick-release structure, which includes: A locking element is provided on the backrest, the locking element having a resilient pressure plate; An unlock button is provided on the backrest mounting bracket, and the unlock button has an unlocking latch extending toward the direction of the elastic pressure plate; The elastic pressure plate has an unlocking ramp, and the unlocking buckle has a guide ramp that matches the unlocking ramp; When the backrest is in the locked state, the elastic pressure plate abuts against the unlocking buckle, and static friction is generated between the two to lock the backrest. When the unlock button is pressed, the unlocking buckle pushes the elastic pressure plate and causes its unlocking ramp to slide along the guide ramp of the unlocking buckle until the elastic pressure plate moves upward away from the squeezing contact with the unlocking buckle and rests on the unlocking buckle, thereby releasing the locked state of the backrest.

2. A quick-release seat back as described in claim 1, characterized in that, The elastic pressure plate is set vertically, and the unlocking ramp is located on the lower side of the elastic pressure plate.

3. A quick-release seat back according to claim 1, characterized in that, The unlocking buckle is L-shaped and includes a horizontal part and a vertical part. The vertical part is located at the front end of the horizontal part facing the elastic pressure plate, and the guide slope is located on the high side of the vertical part.

4. A quick-release seat back according to claim 3, characterized in that, When the backrest is in the locked state, the guide slope separates from the unlocking slope, and the front end face of the vertical part abuts against the elastic pressure plate.

5. A quick-release seat back according to claim 3, characterized in that, When the backrest is unlocked, the elastic pressure plate is mounted on the horizontal part of the unlocking buckle.

6. A quick-release seat back according to claim 1, characterized in that, The inner end face of the backrest mounting bracket is provided with a mounting groove, and the backrest is partially or completely embedded in the mounting groove.

7. A quick-release seat back according to claim 1, characterized in that, The backrest mounting bracket has a receiving groove, the unlock button is disposed in the receiving groove, and a reset spring is provided between the unlock button and the backrest mounting bracket.

8. A quick-release seat back according to claim 1, characterized in that, The backrest and the backrest mounting bracket are also connected by fasteners.

9. A quick-release seat back according to claim 1, characterized in that, The backrest is also provided with a pair of support brackets, and the two sides of the locking member are respectively nested and connected to the two support brackets.

10. A newborn car seat, comprising: The support frame consists of front and rear support legs; The quick-release seat back as described in any one of claims 1-9 above; The backrest mounting frame has connecting accessories at both ends that are integrally connected to it. The connecting accessories include a plug-in housing and a rotating joint. The plug-in housing is connected to the top of the front support leg, and the rotating joint is connected to the top of the rear support leg.

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