Rear hook connecting structure and safety seat

Abstract

The rear hook connecting structure comprises a first connecting body arranged at one end of a supporting rod and a second connecting body arranged on a base, the first connecting body and the second connecting body are provided with a first positioning hole and a first positioning part respectively, and the first positioning hole and the first positioning part are suitable for being connected in an embedded mode. The base has the advantages of being light in weight and convenient to install, light-weight design of products can be achieved, the production machining difficulty and the assembly difficulty of the products are reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of safety seats, and in particular to a rear hook connection structure and a safety seat. Background Art

[0002] A car safety seat is a seat that is fastened to the seat of a car. It is an automobile accessory device that has a restraining and protective function. The commonly referred to safety seats, child safety seats, child car safety seats and car protection seats, etc., all refer to this safety seat, which is only for children to sit in and can restrain children to ensure their safety in the event of a car accident.

[0003] In a safety seat, in order to resist the force caused by the safety seat rebounding after tipping over due to driving inertia, a rear hook structure is provided on the rear side of the base to strengthen the structural strength of the base on that side, thereby improving the stability of the safety seat.

[0004] However, existing safety seats have the following defects: the rear hook structure provided in the safety seats on the market is large in size and weight, which not only takes up space, but also increases the difficulty of carrying and the load on the vehicle due to the increase in weight. Summary of the invention

[0005] One object of the present application is to provide a rear hook connection structure and a safety seat with a lightweight design.

[0006] In order to achieve the above objectives, the technical solution adopted in the present application is: a rear hook connection structure, comprising a first connector arranged at one end of a support rod and a second connector arranged on a base, the first connector and the second connector are respectively provided with a first positioning hole and a first positioning portion, the first positioning hole and the first positioning portion are suitable for an interlocking connection, and the first positioning hole and the first positioning portion are snap-fitted at least within a plane where the base is flipped.

[0007] In some embodiments, a second positioning hole and a third positioning hole are respectively provided on the first connecting body and the second connecting body, and the second positioning hole and the third positioning hole are matched and fixedly connected, and are suitable for at least limiting the first positioning hole and the first positioning portion from falling out.

[0008] In some embodiments, a planar portion is provided on the first connector, a contact platform is provided on the second connector, an upper surface of the contact platform is perpendicular to a plane where the base flips, and the planar portion is suitable for being fitted and connected with an upper surface of the contact platform.

[0009] In some embodiments, the first connecting body includes a first connecting surface, a second connecting surface and a third connecting surface, and the first connecting surface, the second connecting surface and the third connecting surface are suitable for respectively matching to three different surfaces of the second connecting body, the first connecting surface is provided with the planar portion, the second connecting surface is provided with the first positioning hole or the first positioning portion, and the second connecting surface is provided with the second positioning hole or the third positioning hole.

[0010] In some embodiments, a positioning groove is provided on the second connecting body, and the third connecting surface is suitable for fitting into the positioning groove and being connected and fixed by a fastening pin.

[0011] In some embodiments, reinforcing ribs are provided on the planar portion.

[0012] In some embodiments, the cross-section of the first positioning portion in the plane where the base is flipped is a polygon; the first positioning portion is a columnar reinforcement rib, and the axial direction of the first positioning portion is perpendicular to the plane where the base is flipped.

[0013] In some embodiments, the first connector and the second connector cooperate to press and connect the support rod.

[0014] In some embodiments, a rotation zone is provided on the base, the support rod is connected to the side of the first connector away from the rotation zone, a limiting portion is provided on the side of the first connector close to the rotation zone, and the limiting portion extends along the circumferential direction of the rotation zone.

[0015] A safety seat comprises any one of the above-mentioned rear hook connection structures.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: the rear hook connection structure and the safety seat of the present application split the wide and heavy one-piece rear hook in the traditional safety seat into a single rear hook structure, and optimize the connection structure between the support rod and the base. On the premise of lightweight design of the rear hook, the connection stability between the support rod and the base is greatly improved, thereby obtaining the same or even higher structural strength. In addition, the production, processing and assembly difficulties of the optimized related parts are lower, and the assembly efficiency can be higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall structural view according to a preferred embodiment of the present application.

[0018] Figure 2 It is an exploded structural view according to a preferred embodiment of the present application.

[0019] Figure 3 It is an enlarged view of a second connector from a first viewing angle according to a preferred embodiment of the present application.

[0020] Figure 4 It is an enlarged view from a first perspective of the connection between a first connector and a second connector according to a preferred embodiment of the present application.

[0021] Figure 5 It is an enlarged view of a second connecting body from a second viewing angle according to a preferred embodiment of the present application.

[0022] Figure 6 It is an enlarged view from a second perspective of the connection between the first connector and the second connector according to a preferred embodiment of the present application.

[0023] Figure 7 It is a stereoscopic view of the right side of a support rod according to a preferred embodiment of the present application.

[0024] Figure 8 It is a stereoscopic view of the left side of a support rod according to a preferred embodiment of the present application.

[0025] In the figure: 1. first connecting body; 11. first connecting surface; 111. plane part; 1111. reinforcing rib; 12. second connecting surface; 121. first positioning hole; 122. second positioning hole; 13. third connecting surface; 14. limiting part; 2. second connecting body; 21. first positioning part; 22. third positioning hole; 23. contact platform; 24. positioning groove; 3. support rod; 4. base; 41. rotation area; 42. accommodating cavity; 5. fastening pin. DETAILED DESCRIPTION

[0026] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0029] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0030] The present application is further described below with reference to the accompanying drawings:

[0031] like Figures 1 to 8 As shown, the present application provides a rear hook connection structure, including a first connector 1 arranged at one end of a support rod 3 and a second connector 2 arranged on a base 4, the first connector 1 and the second connector 2 are respectively provided with a first positioning hole 121 and a first positioning portion 21, the first positioning hole 121 and the first positioning portion 21 are suitable for being fitted together, and the first positioning hole 121 and the first positioning portion 21 are snap-fitted at least in a plane where the base 4 is flipped.

[0032] The plane where the base 4 flips over refers to the plane where the base 4 will flip over or tend to flip over due to the force generated by the inertia of the seat thereon during driving (especially during acceleration and braking) when the safety seat is placed in the vehicle. The function of the rear hook is to connect to the structure inside the vehicle (such as the seat), thereby helping to fix the base 4 and improving the placement stability of the base 4. In the present application, the rear hook is composed of a first connector 1 and a second connector 2. When the first connector 1 and the second connector 2 are connected, the support rod 3 can be cooperated and fixed with the base 4, and the upper end of the support rod 3 can be connected and fixed to the structure inside the vehicle.

[0033] The interlocking connection between the first positioning hole 121 and the first positioning portion 21 can reduce the difficulty of assembling the first connecting body 1 and the second connecting body 2. At the same time, the snap-fitting fit between the first positioning hole 121 and the first positioning portion 21 can form a stable bite relationship, thereby improving the structural strength of the fit between the two, so as to overcome the force applied in the plane where the base 4 is flipped.

[0034] In the present application, the first positioning hole 121 is preferably provided on the first connector 1, and the first positioning portion 21 is preferably provided on the second connector 2. The production, processing and assembly difficulties of the components of this solution are relatively low.

[0035] like Figure 4In the illustrated embodiment, a second positioning hole 122 and a third positioning hole 22 are respectively provided on the first connecting body 1 and the second connecting body 2. The second positioning hole 122 and the third positioning hole 22 are matched and fixedly connected, and are suitable for at least limiting the first positioning hole 121 and the first positioning portion 21 from coming out, so that the matching form between the first positioning hole 121 and the first positioning portion 21 is more stable.

[0036] It can be understood that the offset deflection between the first positioning hole 121 and the first positioning portion 21 will also cause the connection stability between the first connecting body 1 and the second connecting body 2 to decrease. The second positioning hole 122 and the third positioning hole 22 are connected by the fastening pin 5, which can also limit the offset deflection between the first positioning hole 121 and the first positioning portion 21.

[0037] like Figure 4 In the illustrated embodiment, the second positioning hole 122 and the third positioning hole 22 are matched and fixedly connected, and are suitable for limiting the relative movement of the first connecting body 1 and the second connecting body 2 within the plane where the base 4 is flipped, and can help disperse the force between the first positioning hole 121 and the first positioning portion 21 to further strengthen the connection between the first connecting body 1 and the second connecting body 2.

[0038] In some embodiments, the second positioning hole 122 and the third positioning hole 22 are connected by a nested structure, which can reduce the difficulty of assembly.

[0039] In some embodiments, the second positioning hole 122 and the third positioning hole 22 are locked by a fastening pin 5, which can reduce the difficulty of assembly.

[0040] In some embodiments, the fastening pin 5 uses a universal fastener to improve the versatility of components and reduce the difficulty of production and processing.

[0041] In the present application, the second positioning hole 122 is preferably provided on the second connecting body 1 , and the third positioning hole 22 is preferably provided on the second connecting body 2 .

[0042] like Figures 3 to 4 In the illustrated embodiment, a planar portion 111 is provided on the first connecting body 1, and a contact platform 23 is provided on the second connecting body 2. The upper surface of the contact platform 23 is perpendicular to the plane on which the base 4 is flipped, and the planar portion 111 is suitable for being fitted and connected with the upper surface of the contact platform 23. The cooperation between the planar portion 111 and the contact platform 23 can bear a part of the force applied to the support rod 3 and share the force applied to the first positioning portion 21, thereby increasing the upper limit of the load-bearing capacity of the rear hook itself and the upper limit of the connection load-bearing capacity between the first connecting body 1 and the second connecting body 2.

[0043] In some embodiments, holes may be provided on the plane portion 111 to be connected to the contact platform 23 via fastening pins 5 to improve the matching stability between the plane portion 111 and the contact platform 23 .

[0044] In some embodiments, the first connecting body 1 includes a first connecting surface 11, a second connecting surface 12 and a third connecting surface 13. The first connecting surface 11, the second connecting surface 12 and the third connecting surface 13 are suitable for respectively matching to three different surfaces of the second connecting body 2. A planar portion 111 is provided on the first connecting surface 11, a first positioning hole 121 or a first positioning portion 21 is provided on the second connecting surface 12, and a second positioning hole 122 or a third positioning hole 22 is provided on the second connecting surface 12. Multiple surfaces are used to balance the force between the first connecting body 1 and the second connecting body 2, and the rear hook can withstand more and larger torque by dispersing the force.

[0045] In some embodiments, a positioning groove 24 is provided on the second connector 2, and the third connecting surface 13 is adapted to fit into the positioning groove 24 and is connected and fixed by a fastening pin 5, so as to help the second connector 2 to be subjected to balanced force on one side of the third connecting surface 13 and obtain greater bearing capacity.

[0046] In some embodiments, a hole may be provided on the third connection surface 13 and connected to the positioning groove 24 via a fastening pin 5 to improve the matching stability between the third connection surface 13 and the positioning groove 24 .

[0047] like Figure 7 In the illustrated embodiment, a reinforcing rib 1111 is provided on the plane portion 111 , and the reinforcing rib 1111 can enhance the structural strength of the plane portion 111 , improve the force bearing capacity of the plane portion 111 , and reduce the probability of deformation of the plane portion 111 .

[0048] In some embodiments, the cross section of the first positioning portion 21 in the plane where the base 4 is flipped is a polygon.

[0049] like Figure 4 In the illustrated embodiment, the cross section of the first positioning portion 21 in the plane where the base 4 is flipped is triangular, which occupies a small space and has a stable structure that is not easily deformed.

[0050] In some embodiments, the first positioning portion 21 is a cylindrical reinforcement rib, and the axial direction of the first positioning portion 21 is perpendicular to the plane where the base 4 flips, thereby improving the torsional resistance of the first positioning portion 21 and reducing the probability of deformation and damage of the first positioning portion 21.

[0051] like Figure 2 , 5In the embodiment shown in 6, a rotation area 41 is provided on the base 4, the support rod 3 is connected to the side of the first connecting body 1 away from the rotation area 41, and a limiting portion 14 is provided on the side of the first connecting body 1 close to the rotation area 41. The limiting portion 14 is bent and extended circumferentially along the rotation area 41. The limiting portion 14 can cooperate with the rotation area 41 without affecting the function of the rotation area 41, thereby improving the connection strength between the first connecting body 1 and the second connecting body 2.

[0052] In some embodiments, the limiting portion 14 is obtained by flanging the edge of the first connector 1 in an arc shape.

[0053] like Figure 8 In the illustrated embodiment, the second connecting surface 12 and the third connecting surface 13 are respectively arranged on the left and right sides of the first connecting surface 11, and the limiting portion 14 and the support rod 3 are respectively arranged on the front and rear sides of the first connecting surface 11, so as to make full use of the various structures of the first connecting body 1 for stable connection, ensure structural strength and realize lightweight design.

[0054] like Figures 3 to 4 In the illustrated embodiment, the first connecting body 1 and the supporting rod 3 are connected in a detachable structure, and the first connecting body 1 and the second connecting body 2 cooperate to press and connect the supporting rod 3 .

[0055] like Figures 5 to 6 In the illustrated embodiment, the support rod 3 preferably uses a hollow rod body to further enhance the lightness of the rear hook.

[0056] like Figures 5 to 6 In the illustrated embodiment, the support rod 3 is formed by bending a plate, which can ensure the structural strength of the support rod 3 and improve the bearing capacity of the support rod 3 .

[0057] like Figures 1 to 2 In the illustrated embodiment, a receiving cavity 42 is provided on the rear side of the base 4, and the receiving cavity 42 is used to receive the support rod 3, so as to improve the structural stability between the base 4 and the support rod 3 and reduce the relative movement of the support rod 3 with the base 4 outside the plane where the base 4 flips over.

[0058] The present application also provides a safety seat, comprising the rear hook connection structure of any one of the above embodiments.

[0059] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A rear hook connection structure, characterized in that: It includes a first connector arranged at one end of the support rod and a second connector arranged on the base, the first connector and the second connector are respectively provided with a first positioning hole and a first positioning portion, the first positioning hole and the first positioning portion are suitable for chimeric connection, and the first positioning hole and the first positioning portion are snap-fitted at least within the plane where the base is flipped.

2. A rear hook connection structure according to claim 1, characterized in that: The first connecting body and the second connecting body are respectively provided with a second positioning hole and a third positioning hole. The second positioning hole and the third positioning hole are matched and fixedly connected, and are suitable for at least limiting the first positioning hole and the first positioning portion from coming out.

3. A rear hook connection structure according to claim 1, characterized in that: The first connecting body is provided with a plane portion, the second connecting body is provided with a contact platform, the upper surface of the contact platform is perpendicular to the plane where the base is flipped, and the plane portion is suitable for being fitted and connected with the upper surface of the contact platform.

4. A rear hook connection structure as claimed in claim 3, characterized in that: The first connecting body includes a first connecting surface, a second connecting surface and a third connecting surface, and the first connecting surface, the second connecting surface and the third connecting surface are suitable for respectively matching to three different surfaces of the second connecting body, the first connecting surface is provided with the planar portion, the second connecting surface is provided with the first positioning hole or the first positioning portion, and the second connecting surface is provided with the second positioning hole or the third positioning hole.

5. A rear hook connection structure as claimed in claim 4, characterized in that: The second connecting body is provided with a positioning groove, and the third connecting surface is suitable for fitting into the positioning groove and being connected and fixed by a fastening pin.

6. A rear hook connection structure as claimed in claim 4, characterized in that: The plane portion is provided with reinforcing ribs.

7. A rear hook connection structure according to claim 1, characterized in that: The cross section of the first positioning portion in the plane where the base is flipped is a polygon; the first positioning portion is a columnar reinforcement rib, and the axial direction of the first positioning portion is perpendicular to the plane where the base is flipped.

8. The rear hook connection structure according to claim 1, characterized in that: The first connecting body and the second connecting body are pressed and connected to the supporting rod in cooperation.

9. A rear hook connection structure according to claim 1, characterized in that: The base is provided with a rotation area, the support rod is connected to the first connector at a side away from the rotation area, the first connector is provided with a limiting portion at a side close to the rotation area, and the limiting portion is bent and extended along the circumference of the rotation area.

10. A safety seat, characterized in that: The invention comprises the rear hook connection structure as claimed in any one of claims 1 to 9.

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