Child carrier base with lightweight structural design, and child safety seat

Abstract

A child carrier base with a lightweight structural design, and a child safety seat. The base consists of a non-metallic material housing (1), reinforcing connection pipes (2) each having a hollow structure, support bases (3) each having a sheet-like structure, engagement mechanisms (4) and engagement linkage mechanisms (5) integrated onto the support bases (3), and an unlocking mechanism (6) and a safety locking mechanism (7). The reinforcing connection pipes (2) are directly fixedly connected to the housing (1), optimizing the cross-section size of the reinforcing connection pipes (2) and simplifying the structure of the support bases (3); the engagement linkage mechanisms (5) and the engagement mechanisms (4) cooperate with one another, achieving a structurally simplified design for the child carrier base and the child safety seat, thereby effectively reducing the overall weight and manufacturing costs; operation is convenient and use is safe and reliable.

Description

Child carrier base with lightweight structure design and child safety seat

[0001] This application is based on the applications with the Chinese application number 202421452003.4, the application date of June 24, 2024, and the application number 202422146963.4, the application date of September 2, 2024, and claims priority thereto, the disclosure of which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

[0002] The present application relates to the technical field of children's products, in particular to a child carrier base with lightweight structure design and a child safety seat.

BACKGROUND

[0003] Some existing child safety seat bases have complex structure designs, are heavy, are inconvenient to carry and transport, and have high manufacturing costs, which is not conducive to market competition. The specific manifestations are as follows:

[0004] 1. The existing child safety seat base is usually designed as a support structure formed by multiple pieces or pipes to ensure the connection and support strength.

[0005] 2. The support structure of the existing child safety seat base is connected to the base reinforcing pipe through the support bottom plate, and the base reinforcing pipe is designed as a flat pipe, i.e. the cross-sectional height of the base reinforcing pipe is less than its width. Therefore, to meet the connection and bending strength, the size of the flat pipe is increased.

[0006] 3. The existing child safety seat base includes a turntable and a turntable cover to meet the rotation reversing requirement. The turntable is heavy and is usually made of materials with high density or other thick and solid materials. In addition, the child safety seat base with the rotation reversing function also needs to be provided with a turntable cover to avoid the exposure of the turntable.

[0007] The above are the main reasons for the complexity of the structure of the existing child safety seat base, which leads to heavy weight and high manufacturing cost.

[0008] In addition, the automobile child safety seat on the market is usually detachably connected to the base through the clamping structure when in use. The existing clamping structure usually includes a clamping groove, a clamping hook for matching the clamping groove to clamp and lock the fixing rod on the bottom of the child safety seat, and a spring for keeping the clamping hook in the clamped and locked state. When the child safety seat is connected to the base for use, the clamping hook is kept in the clamped and locked state due to the action of the spring. At this time, the user needs to manually operate the clamping hook to open it relative to the clamping groove, and then the user can place the fixing rod on the child safety seat in the clamping groove. After the fixing rod falls into the clamping groove, the user removes the external force on the clamping hook, and the clamping hook is automatically reset to clamp and lock the fixing rod under the action of the spring. With the above clamping structure, the user needs to unlock the clamping hook with one hand and hold the child safety seat with the other hand to clamp and lock it, which needs multiple steps of operation, and there is the problem of inconvenient operation.

[0009] Therefore, the present application is proposed to solve the above problems.

[0010]

Content of application

[0011] The present application aims to overcome the shortcomings of the prior art and provide a child carrier base with a lightweight structure design. The shell is made of a non-metallic material, the reinforcing connection pipes are in a hollow structure, the support seats are in a sheet structure, the clamping mechanism and the clamping linkage mechanism are integrated on the corresponding support seats to form a separately arranged structure, the structure is simplified, the overall weight is effectively reduced, and the product is convenient to carry. At the same time, the manufacturing cost is effectively reduced, and the market competitiveness of the product is improved.

[0012] The child carrier base with a lightweight structure design comprises a shell, reinforcing connection pipes, support seats, a clamping mechanism, and an unlocking mechanism. The shell is made of a non-metallic material. The reinforcing connection pipes are in a hollow structure and are fixedly connected to the shell in a spaced and direct manner and extend along the front-to-rear direction of the child carrier base. The support seats are in a sheet structure and are arranged on each reinforcing connection pipe in a spaced manner along the front-to-rear direction. The center distance between the front and rear support seats of the same reinforcing connection pipe connected to the bottom of the child carrier is equal to the center distance between the corresponding support seats of the same reinforcing connection pipe connected to the shell. The clamping mechanism is integrated on each support seat and has a first use state and a second use state. In the first use state, the clamping mechanism is used to clamp and lock the fixing rod on the bottom of the child carrier. In the second use state, the clamping mechanism can be used to clamp and place or remove the fixing rod on the bottom of the child carrier. The unlocking mechanism is movably arranged relative to the shell to correspondingly act on the clamping mechanism to unlock the clamping mechanism.

[0013] The cross-sectional height dimension of the reinforcing connection pipe is H, and the cross-sectional width dimension of the reinforcing connection pipe is W, and H>W is satisfied.

[0014] Each of the support seats is an independent L-shaped sheet structure, comprising a sheet-shaped support part and a sheet-shaped mounting part integrally connected to the lower end of the sheet-shaped support part, the sheet-shaped mounting part is fixedly connected with the reinforcing connecting pipe, and the clamping mechanism is integrally connected to the upper part of the sheet-shaped support part.

[0015] The support seat is made of metal, and a plurality of long slot holes for reducing weight are obliquely arranged on the sheet-shaped support part.

[0016] The clamping mechanism comprises a guide slot arranged on the upper part of the sheet-shaped support part for clamping the fixing rod and a clamping hook pivotally connected to the sheet-shaped support part for clamping and locking the fixing rod in cooperation with the guide slot, the clamping hook cooperates with the guide slot to clamp and lock the fixing rod in the first use state, and the clamping hook is opened relative to the guide slot and is limited to rotate to be locked in the second use state.

[0017] The clamping linkage mechanism between the clamping mechanism and the support seat is also included, and the clamping linkage mechanism is also integrally arranged on each of the support seats, and the clamping linkage mechanism is configured to release the locked state of the clamping mechanism when the child carrier is connected and cooperated with the child carrier base, and then enters the first use state from the second use state.

[0018] The safety locking mechanism is also included, and the safety locking mechanism is configured to lock the clamping linkage mechanism when the child carrier is connected and cooperated with the child carrier base to make the clamping mechanism enter the first use state.

[0019] The clamping linkage mechanism comprises a trigger linkage, a trigger elastic member and a linkage seat; the trigger linkage is movably arranged on the support seat and is configured to be correspondingly actuated by the child carrier when the child carrier is connected with the child carrier base; the trigger elastic member is located between the trigger linkage and the support seat to drive the trigger linkage to automatically reset; the clamping mechanism comprises a guide slot arranged on the upper part of the support seat for clamping the fixing rod and a clamping hook pivotally connected to the support seat for clamping and locking the fixing rod in cooperation with the guide slot, the linkage seat is movably located between the trigger linkage and the clamping hook, a linkage seat limiting component for limiting the movement of the linkage seat is arranged between the linkage seat and the trigger linkage, and the linkage seat limiting component is configured to release the limitation of the linkage seat when the trigger linkage is touched by the child carrier; a clamping hook linkage component for correspondingly rotating the clamping hook is arranged between the linkage seat and the clamping hook; the safety locking mechanism is located between the trigger linkage and the linkage seat.

[0020] The trigger linkage is slidably arranged on the sheet-shaped support portion of the support base, and the linkage base is slidably arranged between the trigger linkage and the clamping hook. The linkage base limiting assembly comprises a linkage base limiting vertical slot arranged on the trigger linkage or the linkage base, and a linkage base limiting rod arranged on the linkage base or the trigger linkage and limitingly matched with the linkage base limiting vertical slot. Correspondingly, the linkage base or the trigger linkage is further provided with a linkage base horizontal slot in communication with the linkage base limiting vertical slot and allowing the linkage base limiting rod to move therein. The clamping hook linkage assembly comprises a clamping hook linkage vertical slot arranged on the linkage base or the clamping hook, and a clamping hook linkage rod arranged on the clamping hook or the linkage base and limitingly matched with the clamping hook linkage vertical slot. The safety locking mechanism is formed by the corresponding side wall of the linkage base horizontal slot for limitingly matching with the linkage base limiting rod to prevent the trigger linkage from sliding upwardly and resetting.

[0021] The clamping hook is configured to have a rotating tendency to elastically reset to the guide slot, and the clamping linkage mechanism is further configured such that when the child carrier is connected to the child carrier base or is not separated from the guide slot, the clamping hook is in a state of keeping or tending to keep the clamping of the fixing rod.

[0022] The unlocking mechanism is configured to link the respective clamping hooks to simultaneously open relative to the corresponding guide slots to release the clamping of the fixing rod, and when the child carrier is connected to the child carrier base, the unlocking mechanism is released, so that the respective clamping hooks automatically return to clamp the fixing rod.

[0023] The unlocking mechanism comprises an unlocking linkage frame movably arranged in the housing, the unlocking linkage frame is connected with the clamping hook on each support base, and an unlocking elastic member is arranged between the unlocking linkage frame and the housing for driving the unlocking linkage frame to automatically reset.

[0024] The unlocking mechanism further comprises an unlocking handle slidably arranged on the housing and connected with the unlocking linkage frame, the unlocking handle is partially exposed outside the housing, and the unlocking handle is provided with a locking state display portion which can be hidden inside the housing or exposed outside the housing during the corresponding sliding of the unlocking handle.

[0025] The clamping hook and the sheet-shaped support portion are provided with a clamping hook limiting structure for limiting the clamping hook, and the clamping hook limiting structure comprises a clamping hook limiting shaft arranged on the sheet-shaped support portion for blockingly matching with the clamping hook.

[0026] The application also provides a child safety seat which adopts the child carrier base described above, and can realize simple and concise design, thereby effectively reducing the overall weight and facilitating carrying. At the same time, the manufacturing cost can be effectively reduced, and the market competitiveness of the product can be improved.

[0027] The child safety seat comprises a seat body and the child carrier base with the light-weight structure design.

[0028] Compared with the prior art, the application has the following advantages:

[0029] 1. The child carrier base with the light-weight structure design is characterized in that the shell is made of a non-metal material, the reinforcing connecting pipe has a hollow structure, the support seat has a sheet structure, the clamping mechanism and the clamping linkage mechanism are integrated on the corresponding support seat, and the reinforcing connecting pipe is directly fixedly connected with the shell to omit the bracket bottom plate in the conventional design, so that the structure is simplified, the overall weight is effectively reduced, and the product is convenient to carry and transport.

[0030] 2. The application optimizes the cross-sectional size of the reinforcing connecting pipe, i.e., reduces the width size of the cross section and increases the cross-sectional height size, so as to improve the bending moment resistance of the reinforcing connecting pipe in the load stress direction, meet the safety performance requirements, and have the characteristics of lighter weight and better economy.

[0031] 3. For the same reinforcing connecting pipe, the center distance between the front and rear sheet-shaped support parts connected with the bottom of the child carrier is equal to the center distance between the two sheet-shaped mounting parts connected with the reinforcing connecting pipe, so that the distance between the front and rear support seats is maximally optimized and reduced, the center of gravity of the connected child carrier is located at the middle part between the two support seats, the action point of the force of the child carrier on the support seat and the action point of the force of the support seat on the reinforcing connecting pipe are located on the same vertical line, the problem that the center of gravity of the child carrier deviates from the center of gravity of the child carrier base and the child carrier is easily overturned is avoided, the overall structure size in the front-rear direction is effectively reduced, and a reinforcing connecting pipe with a smaller specification can meet the stress requirements.

[0032] 4. Each support seat is an independent L-shaped sheet-shaped regular metal structure, has a relatively low height size, and is obliquely provided with a plurality of long slot holes, so as to effectively simplify the structure, reduce the weight, and facilitate the processing and manufacturing under the premise of meeting the stress strength requirements.

[0033] 5. The locking mechanism is locked in the second use state through the locking linkage mechanism, allowing the fixing rod at the bottom of the child carrier to be inserted or removed in the second use state; and when the child carrier is locked to the base through its bottom fixing rod, the fixing rod triggers the locking linkage mechanism, causing the locking hook of the locking mechanism to be automatically released from the rotation restriction, and automatically locking or maintaining the locking tendency of the fixing rod. Therefore, in the event of accidental unlocking, as long as the child carrier has not detached from the child carrier base, the locking hook of the locking mechanism will still maintain the tendency of locking the fixing rod, thus having the function of preventing accidental unlocking and further improving the safety and reliability of use.

[0034] 6. To ensure the stable, safe and reliable use of the locking mechanism, the safety locking mechanism is configured to lock the locking mechanism when the child carrier is connected to the base and the hook is in the first use state.

[0035] 7. This application uses a locking and linkage mechanism to lock the hook of the locking mechanism in the second use state, so that the hook remains open relative to the guide slot in the second use state. When connecting the fixing rod at the bottom of the child vehicle to the child vehicle base, the user does not need to perform any additional operation on the hook. The user can simply place the fixing rod at the bottom of the child vehicle into the guide slot to securely lock the child vehicle onto the child vehicle base. Specifically, the locking and linkage mechanism is triggered by the child vehicle during the placement of the fixing rod in the guide slot to release the locked state of the hook in the second use state, so that the hook switches from the second use state to the first use state and engages with the guide slot to lock the fixing rod. This achieves the function of automatic locking immediately upon connection, so only one connection action is required, which is convenient to operate.

[0036] 8. When this application requires the hook to be stably locked in the second use state, it is necessary not only to keep the unlocking handle and unlocking linkage unchanged so that the hook opens relative to the guide slot, but also to disengage the fixing rod from the guide slot. Only then can the locking linkage mechanism stably lock the hook in the second use state. If only the unlocking handle and unlocking linkage are kept unchanged (i.e., the hook is switched from the first use state to the second use state to release the locking state of the fixing rod), the child vehicle will always be in the state of pressing the trigger linkage because the fixing rod is not disengaged from the guide slot. Therefore, the locking linkage mechanism cannot stably lock the hook in the second use state. Ultimately, as long as the fixing rod is in the guide slot, the hook will always maintain the locking of the fixing rod or maintain the tendency to lock the fixing rod. Therefore, the situation where the fixing rod is in the guide slot but the hook is not locking the fixing rod is avoided, ensuring safe and reliable use. [Attached Image Description]

[0037] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, wherein:

[0038] Fig. 1 is a structural perspective view of the engagement mechanism in a first use state according to the present application.

[0039] Fig. 2 is a structural perspective view of the engagement mechanism in a second use state according to the present application.

[0040] Fig. 3 is a use state perspective view of the child carrier and the child carrier base during connection and cooperation according to the present application.

[0041] Fig. 4 is a use state sectional view of the child carrier and the child carrier base during connection and cooperation according to the present application.

[0042] Fig. 5 is a use state perspective view of the child carrier and the child carrier base during connection and cooperation according to the present application.

[0043] Fig. 6 is a use state sectional view of the child carrier and the child carrier base during connection and cooperation according to the present application.

[0044] Fig. 7 is a partial structural perspective view according to the present application.

[0045] Fig. 8 is a perspective view of the engagement mechanism in a first use state according to the present application.

[0046] Fig. 9 is a perspective view of the engagement mechanism in a second use state according to the present application.

DETAILED DESCRIPTION

[0047] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0048] As shown in Figs. 1-9, the child carrier base with a lightweight structural design according to the present application comprises a shell 1, reinforcing connection pipes 2, support seats 3, an engagement mechanism 4, an engagement linkage mechanism 5, and an unlocking mechanism 6.

[0049] The shell 1 is made of non-metallic material, preferably hard plastic. The reinforcing connection pipes 2 are hollow structures and are fixedly connected to the shell 1 at intervals. The support plate between the reinforcing connection pipes 2 and the shell 1 in the prior art is omitted for lightweight design, and the reinforcing connection pipes 2 extend along the front-to-back direction of the child carrier base. As shown in Figs. 1, 2, and 4, the cross-sectional height dimension of the reinforcing connection pipe 2 is H, and the cross-sectional width dimension of the reinforcing connection pipe 2 is W, satisfying H>W. The direction of the load acting on the reinforcing connection pipe 2 placed on the child carrier base is parallel to the cross-sectional height direction of the reinforcing connection pipe 2. By reducing the cross-sectional width dimension and increasing the cross-sectional height dimension of the reinforcing connection pipe, the weight of the reinforcing connection pipe 2 is reduced, and the bending moment resistance of the reinforcing connection pipe 2 is improved.

[0050] The support seat 3 is in a sheet structure, and each of the reinforcing connection pipes 2 is provided with the support seat 3 in the front-rear direction at intervals. The support seat 3 is integrally provided with a clamping mechanism 4, and the clamping mechanism 4 has a first use state and a second use state. The clamping mechanism 4 is used for clamping and locking the fixed rod 100 at the bottom of the child carrier in the first use state. The clamping mechanism 4 can be clamped, placed or taken out of the fixed rod 100 at the bottom of the child carrier in the second use state.

[0051] The clamping linkage mechanism 5 is also integrally provided on each of the support seats 3, and the clamping linkage mechanism 5 is configured to release the locked state of the clamping mechanism 4 when the child carrier is connected and matched with the child carrier base, thereby entering the first use state from the second use state.

[0052] The unlocking mechanism 6 is movably arranged relative to the shell 1 to correspondingly act on the unlocking action of the clamping mechanism 4.

[0053] Therefore, the whole connection structure is designed, including the lightweight design of the reinforcing connection pipe and the support seat, so as to effectively reduce the overall weight, facilitate carrying and transportation, and effectively reduce the manufacturing cost and improve the market competitiveness of the product.

[0054] The clamping linkage mechanism 4 is used to lock the clamping hook of the clamping mechanism in the second use state, so that the clamping hook is kept open relative to the guide slot in the second use state, as shown in FIGS. 2-4. When the fixed rod 100 at the bottom of the child carrier is connected with the child carrier base, the user does not need to perform additional operation action on the clamping hook, and the user directly places the fixed rod 100 at the bottom of the child carrier in the guide slot, so as to firmly clamp and lock the child carrier on the child carrier base. Specifically, the clamping linkage mechanism is triggered by the child carrier during the placement of the fixed rod 100 in the guide slot to release the locked state of the clamping hook in the second use state, so that the clamping hook is switched from the second use state to the first use state to cooperate with the guide slot to clamp and lock the fixed rod 100, as shown in FIGS. 1, 5-8. The connection is automatically locked, so only one connection action is needed, which has the characteristics of convenient operation.

[0055] As shown in FIG. 1-7, each of the support seats 3 is an independent L-shaped sheet structure, which can make the support seat parts less, the shape more regular, and the height lower. The support seat 3 comprises a sheet support part 31 and a sheet mounting part 32, which is vertically connected to the lower end of the sheet support part 31 and is integrally formed, and is fixedly connected with the reinforcing connecting pipe 2. The clamping mechanism 4 is integrally connected to the sheet support part 31. The center distance between the front and rear sheet support parts 31 of the same reinforcing connecting pipe 2 and the child carrier bottom is equal to the center distance between the corresponding sheet mounting parts 32 of the same reinforcing connecting pipe 2 and the child carrier bottom. With such a structure, the distance between the front and rear support seats can be optimized to the maximum, and the center of gravity of the connected child carrier is basically located in the middle of the two support seats, so that the action point of the force of the child carrier on the support seat and the action point of the force of the support seat on the reinforcing connecting pipe are on the same vertical line. Therefore, the problem that the center of gravity of the child carrier itself deviates from the center of gravity of the child carrier bottom and is easy to overturn can be avoided after connection. Such a structure design can effectively reduce the overall structure size, and a smaller reinforcing connecting pipe can be selected to meet the force requirement. The reinforcing connecting pipe 2 connects and fixes the two support seats 3, which can improve the structural strength between the two support seats 3 and ensure the connection safety and reliability. At the same time, the reinforcing connecting pipe is a hollow hard material, such as steel or aluminum, which can not only ensure the structural strength, but also reduce the overall weight of the child carrier bottom and achieve lightweight. In the embodiment, the reinforcing connecting pipe 2 and the shell 1 can be connected and fixed by connecting screws or other connection methods, and the support seat 3 and the reinforcing connecting pipe 2 can be connected and fixed by welding or connecting screws or other connection methods.

[0056] As shown in FIG. 1-7, the support seat 3 is made of metal, and a plurality of long slot holes 311 for reducing weight are arranged on the sheet support part 31 in an inclined manner. Thus, the structural strength is ensured, the weight is effectively reduced, the structure is more simple, and the economy is better.

[0057] As shown in FIG. 1-7, in order to stably and conveniently clamp and lock the fixed rod 100 of the child carrier bottom, the clamping mechanism 4 comprises a guide slot 41 arranged on the upper part of the sheet support part 31 for clamping the fixed rod 100 and a clamping hook 42 pivotally connected to the sheet support part 31 for clamping and locking the fixed rod 100 in cooperation with the guide slot 41. The clamping hook 42 cooperates with the guide slot 41 in the first use state to clamp and lock the fixed rod 100. The clamping hook 42 is opened relative to the guide slot 41 and is limited to rotate to be locked in the second use state. The clamping linkage mechanism 5 is located between the clamping mechanism 4 and the sheet support part 31. The clamping linkage mechanism 5 is configured to release the locked state of the clamping hook 42 when the child carrier is connected and cooperated with the child carrier bottom, and then enters the first use state from the second use state.

[0058] At the same time, in order to ensure the stable, safe and reliable use of the snap linkage mechanism, a safety locking mechanism 7 is further included, which is configured to lock the snap linkage mechanism 5 when the child carrier is connected with the child carrier base to make the snap hook 42 enter the first use state

[0059] As shown in FIGS. 1-7, the snap linkage mechanism 5 includes a trigger linkage 51, a trigger elastic member 52 and a linkage seat 53; the trigger linkage 51 is movably arranged on the sheet-shaped support portion 31 and is configured to be triggered by the child carrier to move when the child carrier is connected with the child carrier base; the trigger elastic member 52 is arranged between the trigger linkage 51 and the sheet-shaped support portion 31 to drive the trigger linkage 51 to automatically reset; the linkage seat 53 is movably arranged between the trigger linkage 51 and the snap hook 42, a linkage seat limiting assembly 54 is arranged between the linkage seat 53 and the trigger linkage 51 to limit the movement of the linkage seat 53, and the linkage seat limiting assembly 54 is configured to release the limitation of the linkage seat 53 when the trigger linkage 51 is triggered by the child carrier; a snap hook linkage assembly 55 is arranged between the linkage seat 53 and the snap hook 42 to link the corresponding rotating movement of the snap hook 42; the safety locking mechanism 7 is arranged between the trigger linkage 51 and the linkage seat 53. When the child carrier is connected with the child carrier base to place the fixing rod 100 in the guide slot, the child carrier presses the trigger linkage to release the limitation of the linkage seat 53 by the linkage seat limiting assembly 54, i.e. to release the locked state of the snap hook in the second use state, the linkage seat 53 links the snap hook to rotate correspondingly by the snap hook linkage assembly 55, so that the snap hook 42 automatically resets to clamp and lock the fixing rod 100.

[0060] As shown in FIG. 1-7, in order to make the structure linkage of the present application accurate and reliable, the trigger linkage 51 is slidably arranged on the sheet-shaped supporting part 31 of the supporting base 3, the linkage seat 53 is slidably arranged between the trigger linkage 51 and the clamping hook 42, the linkage seat limiting assembly 54 comprises a linkage seat limiting vertical slot 541 arranged on the trigger linkage 51 or the linkage seat 53 and a linkage seat limiting rod 542 arranged on the linkage seat 53 or the trigger linkage 51 and limitingly matched with the linkage seat limiting vertical slot 541, and the linkage seat 53 or the trigger linkage 51 is further provided with a linkage seat horizontal slot 543 in communication with the linkage seat limiting vertical slot 541 and allowing the linkage seat limiting rod 542 to move therein, the clamping hook linkage assembly 55 comprises a clamping hook linkage vertical slot 551 arranged on the linkage seat 53 or the clamping hook 42 and a clamping hook linkage rod 552 arranged on the clamping hook 42 or the linkage seat 53 and limitingly matched with the clamping hook linkage vertical slot 551, and the safety locking mechanism 7 is formed by the corresponding side wall of the linkage seat horizontal slot 543 for limitingly matching with the linkage seat limiting rod 542 to prevent the trigger linkage 51 from sliding upwardly and resetting. In the process of connecting the child carrier with the child carrier base so that the fixing rod 100 is placed in the guide slot, the child carrier presses the trigger linkage to make the trigger linkage drive the linkage seat limiting rod 542 to slide downwardly relative to the sheet-shaped supporting part 31, so that the linkage seat limiting rod 542 is separated from the linkage seat limiting vertical slot 541 to release the limited state of the linkage seat 53, then the linkage seat 53 slides along the front-rear direction relative to the sheet-shaped supporting part 31 to make the linkage seat horizontal slot 543 slidingly matched with the linkage seat limiting rod 542 (at this time, the upper side wall of the linkage seat horizontal slot 543 is matched with the linkage seat limiting rod 542 to prevent the trigger linkage 51 from sliding upwardly and resetting), and the clamping hook linkage vertical slot 551 is matched with the clamping hook linkage rod 552 to drive the clamping hook 42 to automatically reset and clampingly lock the fixing rod 100, and the linkage is stable and reliable.

[0061] In addition, the linkage seat limiting rod 542 is matched with the linkage seat limiting vertical slot 541 and the linkage seat horizontal slot 543, and the clamping hook linkage vertical slot 551 is matched with the clamping hook linkage rod 552, all of which can play a role of guiding and limiting to ensure the smooth and stable use of the corresponding parts of the present application.

[0062] In order to ensure that the clamping hook keeps clampingly locking the fixing rod 100 to ensure the stable and reliable connection and improve the resetting efficiency, the linkage seat resetting elastic member for driving the linkage seat 53 to elastically reset so that the clamping hook 42 has a tendency to keep clampingly locking the fixing rod 100 or keep clampingly locking the fixing rod 100 is further included. In the embodiment, the linkage seat resetting elastic member can be composed of the unlocking elastic member.

[0063] As shown in FIG. 7, the clamping hook 42 and the sheet-shaped supporting part 31 are provided with a clamping hook limiting structure 421 for limiting the clamping hook 42, which comprises a clamping hook limiting shaft provided on the sheet-shaped supporting part 31 for blocking cooperation with the clamping hook 42. In this embodiment, the angle of rotation of the clamping hook is limited by the clamping hook limiting shaft, so that the clamping hook can meet the use requirements and ensure normal use. At the same time, the clamping hook limiting shaft and the clamping hook limiting cooperation can also play a positioning role on the clamping hook, ensuring that the clamping hook is stably clamped and locked with the fixing rod 100 in the first use state.

[0064] Further, the clamping hook 42 is configured to have a rotating tendency to elastically reset to the guide slot 41, and the clamping linkage mechanism 5 is also configured such that when the child carrier is connected to the child carrier base or is not separated from the guide slot 41, the clamping hook 42 is in a state of keeping the fixing rod 100 clamped and locked or having a tendency to keep the fixing rod 100 clamped and locked. When it is necessary to stably lock the clamping hook in the second use state, it is not only necessary to keep the unlocking handle and the unlocking linkage frame unlocked under the condition that the unlocking action remains unchanged, so that the clamping hook is opened relative to the guide slot, but also necessary to separate the fixing rod 100 from the guide slot, and then the clamping linkage mechanism can stably lock the clamping hook in the second use state. If only the unlocking handle and the unlocking linkage frame are kept unlocked under the condition that the unlocking action remains unchanged (i.e., the clamping hook is switched from the first use state to the second use state to release the clamped and locked state of the fixing rod 100), the child carrier is always in the state of pressing the trigger linkage due to the fact that the fixing rod 100 is not separated from the guide slot, so that the clamping linkage mechanism cannot stably lock the clamping hook in the second use state. Finally, as long as the fixing rod 100 is located in the guide slot, the clamping hook always keeps the action tendency of clamping and locking the fixing rod 100 or keeping the action tendency of clamping and locking the fixing rod 100. Therefore, the situation that the fixing rod 100 is located in the guide slot and the clamping hook does not clamp and lock the fixing rod 100 is avoided, ensuring safe and reliable use.

[0065] As shown in FIGS. 1, 3-6, in order to unlock conveniently, the unlocking mechanism 6 is configured to link each clamping hook 42 to simultaneously open relative to the corresponding guide slot 41 to release the clamped and locked action of the fixing rod 100, and when the child carrier is connected to the child carrier base, the unlocking mechanism 6 is loosened, so that each clamping hook 42 automatically returns to clamping and locking the fixing rod 100. The unlocking mechanism 6 comprises an unlocking linkage frame 61 movably arranged in the housing 1, the unlocking linkage frame 61 is connected with each clamping hook 42 on the supporting seat 2, and the unlocking linkage frame 61 and the housing 1 are provided with an unlocking elastic member 62 for driving the unlocking linkage frame 61 to automatically reset. The unlocking mechanism 6 further comprises an unlocking handle 63 slidably arranged on the housing 1 and connected with the unlocking linkage frame 61, and the unlocking handle 63 partially exposes outside the housing 1. Among them, the linkage seat 43 is formed by the corresponding end of the unlocking linkage frame 61.

[0066] In order to realize lightweight design, the unlocking linkage frame 61 and the unlocking handle 63 are integrally injection molded by plastic.

[0067] When unlocking, the user operates the unlocking handle 63 to drive the unlocking linkage frame 61 to slide relative to the shell 1. The unlocking linkage frame 61 cooperates with the catch linkage vertical slot 551 and the catch linkage rod 552 to synchronously drive each catch 42 to rotate relative to the sheet-shaped support part 31, so that the catch 42 is switched from the first use state to the second use state, thereby unlocking the locking state of the catch on the fixed rod 100.

[0068] When the user releases the unlocking handle 63, the unlocking linkage frame 61 is automatically reset under the action of the unlocking elastic member 62, and each catch 42 is driven to rotate relative to the sheet-shaped support part 31, so that the catch 42 is switched from the second use state to the first use state. In this embodiment, only one set of unlocking elastic members 62 is needed to ensure that each catch always remains in the first use state to lock the fixed rod 100, which has the characteristics of simplified structure and reduced cost.

[0069] As shown in FIGS. 3 and 9, the unlocking handle 63 is provided with a locking state display part 64 which can be hidden inside the shell 1 or exposed outside the shell 1 during the corresponding sliding process of the unlocking handle 63. The user can check whether the locking state display part 64 is exposed outside the shell 1 by naked eye, thereby prompting the user whether the product is in the correct and safe state of clamping. In some embodiments, the locking state display part 64 can be a red color display coated on the unlocking handle 63.

[0070] As shown in FIGS. 1, 2 and 7, the catches 42 on the two support seats 3 arranged at intervals along the left-right direction of the child carrier base are connected by the connecting rod 200, and the clamping linkage mechanisms 5 on the two support seats 3 arranged at intervals along the left-right direction of the child carrier base are also connected by the connecting rod 200. Specifically, the connecting rod 200 is connected with the two trigger linkages 51 respectively. When the child carrier is connected with the child carrier base, the child carrier can press the trigger linkages 51 to ensure that the trigger linkages 51 on the two support seats 3 are synchronously and smoothly slid, and the structural strength is improved. The catches on the two support seats 3 are also connected by the connecting rod, which can ensure that the catches on the two support seats 3 are synchronously rotated, which is beneficial to synchronous unlocking and locking.

[0071] In this application, the connecting rod 200 and the trigger linkage 41 are designed separately, and after combination, the structure is simple, the weight is light, and the assembly is convenient, so the defect of large weight caused by integral molding in the prior art is avoided.

[0072] The application discloses a child safety seat, which comprises a seat body and a child carrier base with a light-weight structure design as described above, and the bottom of the seat body is detachably connected to the child carrier base. The child safety seat adopts the child carrier base, so that when the seat body is connected to the child carrier base, the user does not need to perform an additional operation on the clamping hook, and the user can place the fixing rod 100 at the bottom of the seat body on the guide slot by using one hand, and trigger the clamping mechanism in the placement and cooperation process, so as to release the rotation limitation of the clamping hook, and finally make the clamping hook clamp and lock the fixing rod 100, so that the child safety seat has the characteristics of reliable connection and convenient operation.

Claims

1. A child vehicle base with a lightweight structural design, characterized in that... include: The housing (1) is made of a non-metallic material; The reinforcing connecting tube (2) has a hollow structure. The two reinforcing connecting tubes (2) are fixedly connected to the housing (1) at intervals and directly, and are arranged to extend along the front and rear direction of the child carrier base. Support base (3), the support base (3) is a sheet structure, and each of the reinforcing connecting tubes (2) is provided with support bases (3) at intervals along the front and rear direction. The center distance between the front and rear support bases (3) of the same reinforcing connecting tube (2) and the bottom of the child carrier is equal to the center distance between the corresponding support bases (3) and the reinforcing connecting tube (2). The locking mechanism (4) is integrated on each of the support seats (3), and the locking mechanism (4) has a first use state and a second use state. In the first use state, the locking mechanism (4) is used to lock the fixing rod (100) at the bottom of the child vehicle. In the second use state, the locking mechanism (4) allows the fixing rod (100) at the bottom of the child vehicle to be locked in or removed. Unlocking mechanism (6) is movably disposed relative to housing (1) for unlocking action of corresponding engagement mechanism (4).

2. The child vehicle base with a lightweight structural design according to claim 1, characterized in that... The cross-sectional height dimension of the reinforcing connecting pipe (2) is H, and the cross-sectional width dimension of the reinforcing connecting pipe (2) is W, satisfying: H>W.

3. The child vehicle base with a lightweight structural design according to claim 1, characterized in that... Each of the support bases (3) is an independent L-shaped sheet structure, including a sheet support part (31) and a sheet mounting part (32). The sheet mounting part (32) is integrally formed and connected to the lower end of the sheet support part (31). The sheet mounting part (32) is fixedly connected to the reinforcing connecting tube (2). The locking mechanism (4) is integrated and connected to the sheet support part (31). The center distance between the two sheet support parts (31) at the front and rear of the same reinforcing connecting tube (2) and the bottom of the child carrier is equal to the center distance between the two sheet mounting parts (32) and the corresponding reinforcing connecting tube (2).

4. A child vehicle base with a lightweight structural design according to claim 3, characterized in that... The support base (3) is made of metal, and the sheet-like support portion (31) is provided with a plurality of elongated slots (311) at an angle to reduce weight.

5. A child vehicle base with a lightweight structural design according to claim 3, characterized in that... The locking mechanism (4) includes a guide slot (41) provided on the upper part of the sheet support (31) for locking the fixing rod (100) and a hook (42) pivotally connected to the sheet support (31) for engaging with the guide slot (41) to lock the fixing rod (100). In the first use state, the hook (42) engages with the guide slot (41) to lock the fixing rod (100). In the second use state, the hook (42) opens relative to the guide slot (41) and is restricted from rotation and locked.

6. A child vehicle base with a lightweight structural design according to claim 1, characterized in that... It also includes a locking linkage mechanism (5) located between the locking mechanism (4) and the support base (3). Each of the support bases (3) is also integrated with a locking linkage mechanism (5). The locking linkage mechanism (5) is configured to release the locking mechanism (4) from the locked state when the child vehicle is connected and engaged with the child vehicle base, thereby entering the first use state from the second use state.

7. A child vehicle base with a lightweight structural design according to claim 6, characterized in that... It also includes a safety locking mechanism (7), which is configured to lock the locking linkage mechanism (5) when the child vehicle is connected and engaged with the child vehicle base to put the locking mechanism (4) into a first use state.

8. A child vehicle base with a lightweight structural design according to claim 7, characterized in that... The locking and linkage mechanism (5) includes a trigger linkage component (51), a trigger elastic component (52), and a linkage seat (53); The trigger linkage (51) is movably mounted on the support base (3) and configured to be activated by the child vehicle when the child vehicle is connected to the child vehicle base; The triggering elastic element (52) is located between the triggering linkage element (51) and the support base (3) to drive the triggering linkage element (51) to automatically reset; The locking mechanism (4) includes a guide slot (41) on the upper part of the support base (3) for locking the fixing rod (100) and a hook (42) pivotally connected to the support base (3) for engaging with the guide slot (41) to lock the fixing rod (100). The linkage seat (53) is movably located between the trigger linkage member (51) and the hook (42). A linkage seat limiting component (54) is provided between the linkage seat (53) and the trigger linkage member (51) to limit the movement of the linkage seat (53). The linkage seat limiting component (54) is configured to release the limiting of the linkage seat (53) when the trigger linkage member (51) is touched by a child vehicle. A hook linkage component (55) is provided between the linkage seat (53) and the hook (42) to link the corresponding rotation of the hook (42). The safety locking mechanism (7) is located between the trigger linkage (51) and the linkage seat (53).

9. A child vehicle base with a lightweight structural design according to claim 8, characterized in that... The trigger linkage (51) is slidably disposed on the sheet support (31) of the support base (3), and the linkage base (53) is slidably located between the trigger linkage (51) and the hook (42). The linkage seat limiting assembly (54) includes a linkage seat limiting vertical groove (541) provided on the trigger linkage member (51) or linkage seat (53) and a linkage seat limiting rod (542) provided on the linkage seat (53) or trigger linkage member (51) and limitedly cooperated with the linkage seat limiting vertical groove (541). Correspondingly, the linkage seat (53) or trigger linkage member (51) is also provided with a linkage seat horizontal groove (543) that communicates with the linkage seat limiting vertical groove (541) and allows the linkage seat limiting rod (542) to move within it. The hook linkage assembly (55) includes a hook linkage vertical groove (551) provided on the linkage seat (53) or the hook (42), and a hook linkage rod (552) provided on the hook (42) or the linkage seat (53) and in limiting cooperation with the hook linkage vertical groove (551). The safety locking mechanism (7) is formed by the corresponding side wall of the linkage seat transverse groove (543) for limiting and cooperating with the linkage seat limit rod (542) to prevent the trigger linkage (51) from sliding upward and resetting.

10. A child vehicle base with a lightweight structural design according to claim 9, characterized in that... The hook (42) is configured to have a rotational tendency to maintain elastic reset towards the guide slot (41), and the locking linkage mechanism (5) is further configured to keep the locking rod (100) locked or to maintain a tendency to lock the fixing rod (100) when the child vehicle is connected to the child vehicle base or has not disengaged from the guide slot (41).

11. A child vehicle base with a lightweight structural design according to claim 5 or 9, characterized in that... The unlocking mechanism (6) is configured to simultaneously open the hooks (42) relative to the corresponding guide slots (41) to release the locking action on the fixing rod (100). When the child vehicle is connected to the child vehicle base, releasing the unlocking mechanism (6) will cause the hooks (42) to automatically return to locking the fixing rod (100).

12. A child vehicle base with a lightweight structural design according to claim 11, characterized in that... The unlocking mechanism (6) includes an unlocking linkage frame (61) movably placed inside the housing (1). The unlocking linkage frame (61) is connected to a hook (42) on each support base (2). An unlocking elastic element (62) for automatically resetting the unlocking linkage frame (61) is provided between the unlocking linkage frame (61) and the housing (1).

13. A child vehicle base with a lightweight structural design according to claim 12, characterized in that... The unlocking mechanism (6) further includes an unlocking handle (63) that is slidably disposed on the housing (1) and connected to the unlocking linkage frame (61). Part of the unlocking handle (63) is exposed on the outside of the housing (1). The unlocking handle (63) is provided with a locking status display part (64) that can be hidden inside the housing (1) or exposed on the outside of the housing (1) when the unlocking handle (63) slides accordingly.

14. A child vehicle base with a lightweight structural design according to claim 5 or 9, characterized in that... A hook limiting structure (421) for limiting the hook (42) is provided between the hook (42) and the sheet support (31). The hook limiting structure (421) includes a hook limiting shaft provided on the sheet support (31) for blocking and cooperating with the hook (42).

15. A child safety seat, characterized in that... The invention includes a seat body and a child vehicle base with a lightweight structural design as described in any one of claims 1-14, wherein the bottom of the seat body is detachably snapped onto the child vehicle base.

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