Seat framework for automobile seat and automobile seat

Abstract

The utility model discloses a seat framework for an automobile seat and the automobile seat. The seat framework comprises a cushion framework, an armrest framework, a backrest framework and a connecting rod, the cushion framework comprises cushion supports arranged at intervals in the first direction and cushion side edge plates arranged correspondingly. Each cushion side edge plate comprises a first connecting point, a fulcrum and a second connecting point which are distributed at intervals and is rotationally connected to the corresponding cushion support. The armrest framework corresponds to the cushion side edge plate, is rotationally connected with the corresponding cushion bracket, and can slide relative to the cushion bracket along the extending direction of the armrest framework. And the backrest framework is rotationally connected with the rear part of the corresponding armrest framework and is rotationally connected with a second connecting point of the cushion side edge plate. And the connecting rods are arranged corresponding to the cushion side plates, and are rotationally connected with the front parts of the armrest frameworks and first connecting points of the corresponding cushion side plates. By means of the structure, switching of zero-gravity postures can be achieved, mechanisms such as a connecting rod are not additionally arranged, the structure is simple, and cost is low.

Description

Technical Field

[0001] The utility model relates to the field of automobile seat manufacturing, in particular to a seat frame for an automobile seat and an automobile seat. Background Art

[0002] As an important part of the human-machine interaction between the car and the passengers, the car seat plays an important role in the safety and comfort of riding. Traditional car seats usually use a recliner located at the connection between the backrest and the seat frame to adjust the backrest angle, and a connecting rod mechanism under the seat frame to adjust the seat cushion height. This structure can adjust the backrest to a position that is more in line with the human spine curve, thereby ensuring a certain degree of comfort.

[0003] However, with the continuous development of the automobile industry, users have put forward higher and higher requirements for automobile seats. The aforementioned traditional seats can only adjust the seat back angle, so that the pressure is concentrated on the buttocks, which cannot further ensure the comfort of the passengers and is easy to cause passenger fatigue when sitting for a long time.

[0004] Therefore, a zero-gravity car seat has been proposed in recent years. The so-called zero-gravity car seat is a seat that can realize the natural state of the human body in a state of weightlessness. By setting the seat as a zero-gravity seat, the fatigue of the occupants during riding can be reduced, the riding comfort can be improved, and the riding experience of the occupants can be optimized to the greatest extent. In order to realize a zero-gravity seat, the seat needs to be able to switch between a zero-gravity posture and a normal posture. Here, it can be further understood that the upper part of the seat (that is, the seat cushion frame, backrest frame, armrests and other parts of the seat) can rotate as a whole relative to the bottom slide rail, and the seat cushion frame can rotate independently relative to the slide rail, thereby adjusting its angle relative to the slide rail to fit the human body curve in a weightless state.

[0005] In order to achieve such a posture, the seat is usually set as a three-layer structure. The bottom layer is a slide rail, which is connected to the vehicle floor. The middle layer is a connecting rod mechanism, the lower end of which is rotatably connected to the slide rail, and the upper end is rotatably connected to the seat cushion frame. The top layer is the seat cushion frame and backrest frame and other structures included in the upper part of the seat. Among them, in order to meet the requirements of zero-gravity seats, the connecting rod mechanism includes a front connecting rod, a rear connecting rod and a tilt adjustment connecting rod, and forms a five-link mechanism with the seat cushion frame and the slide rail, so that the seat cushion frame can rotate independently relative to the bottom slide rail to adjust the angle of the seat cushion frame, and can also drive the upper part of the seat to rotate relative to the bottom slide rail through the seat cushion frame. In this way, the zero-gravity posture of the seat is achieved.

[0006] However, this solution requires a connecting rod mechanism, which has a complex structure, many parts, and high cost, which is not conducive to popularization and promotion. In addition, many steps are required for adjustment, and the operation is relatively complicated.

[0007] It can be seen from the above that the zero-gravity chair in the prior art cannot achieve the zero-gravity effect while taking into account the simple structure. Utility Model Content

[0008] The utility model provides a seat frame for a car seat and a car seat, which solves the problem that the car seat provided in the prior art cannot have a simple structure while achieving a zero gravity effect.

[0009] The utility model provides a seat frame for a car. The seat frame comprises a cushion frame, two armrest frames, a backrest frame and two connecting rods.

[0010] The seat cushion frame includes two seat cushion brackets arranged opposite to each other in a first direction, and two seat cushion side panels arranged corresponding to the two seat cushion brackets. Each of the two seat cushion side panels has a first connection point, a fulcrum and a second connection point which are distributed in sequence at intervals. The fulcrum of each seat cushion side panel is rotatably connected to the corresponding seat cushion bracket.

[0011] Two armrest frames are arranged corresponding to two cushion brackets and two cushion side panels, and each of the two armrest frames is spaced apart from the corresponding cushion side panel in the second direction, and each armrest frame is rotatably connected to the corresponding cushion bracket and can slide relative to the cushion bracket along its own extension direction.

[0012] A backrest frame, wherein two opposite sides of the backrest frame in the first direction are respectively rotatably connected to the rear of the corresponding armrest frame, and are also respectively rotatably connected to the second connection points of the corresponding seat cushion side panels;

[0013] Two connecting rods are arranged corresponding to the two seat cushion side panels and the two armrest frames. The two connecting rods are arranged at intervals with the backrest frame in the third direction, and each of the two connecting rods is rotatably connected to the front part of the corresponding armrest frame and the first connection point of the corresponding seat cushion side panel respectively; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0014] At this time, the two cushion side panels, two armrest frames, a backrest frame and two connecting rods can be regarded as two four-bar linkages spaced apart in the first direction. The four-bar linkage here is composed of cushion side panels, armrest frames, parts of the backrest frame and connecting rods connected end to end. Among them, the connecting rod and the backrest frame are two driven rods, and the two ends are rotatably connected to the corresponding armrest frames and cushion side panels respectively. The cushion side panels are rotatably connected to the cushion bracket through a fulcrum, and the armrest frame is rotatably connected to the cushion bracket, so that the four-bar linkage is installed on the cushion bracket as a whole. And the armrest frame can slide in its own extension direction relative to the cushion bracket.

[0015] When the seat frame switches between the normal posture and the zero-gravity posture, the armrest frame is used as the active part to slide relative to the seat cushion bracket in its own extension direction, and drive the connecting rod and the backrest frame to rotate with the connection point with the lower seat cushion side panel as the axis, thereby realizing the angle adjustment of the connecting rod and the backrest frame. At the same time, the connecting rod and the backrest frame also link the lower seat cushion side panel to rotate with the fulcrum as the axis. At this time, the armrest frame also rotates relative to the seat cushion bracket, thereby realizing the overall angle adjustment of the seat frame. The combination of the two realizes the purpose of switching the seat frame between the normal posture and the zero-gravity posture.

[0016] By setting such a structure, it is not necessary to set a connecting rod mechanism between the slide rail and the seat frame to adjust the angle of the seat frame and drive the upper part of the seat to rotate relative to the slide rail as in the prior art, so as to achieve the switching of the zero-gravity posture. The structure is simple and the cost is low, which is conducive to the popularization of zero-gravity seats. And the switching steps are relatively simple and easy to use.

[0017] In some embodiments, each armrest frame is rotatably connected to the corresponding seat cushion frame through an adapter bracket; wherein the adapter bracket is slidably connected to the armrest frame, and the adapter bracket is rotatably connected to the seat cushion frame, so that the armrest frame and the adapter bracket can rotate relative to the seat cushion frame, and the armrest frame can slide relative to the seat cushion frame along its extension direction. By adding an adapter bracket, the armrest frame can be rotated relative to the seat cushion frame and can slide relative to the seat cushion frame along its own extension direction. The movement trajectory of the armrest frame is also more controllable.

[0018] In some embodiments, the adapter bracket includes a connecting plate, a connecting bracket and a pulley; the connecting plate is rotatably connected to the cushion bracket; the connecting bracket is fixedly connected to one side of the connecting plate, so that the conversion bracket is rotatably connected to the cushion bracket through the connecting plate, and both ends of the pulley are rotatably connected to the connecting plate and the connecting bracket. An elongated through hole is opened on the armrest frame; the area of ​​the armrest frame on one side of the elongated through hole is located between the connecting plate and the connecting bracket, and the pulley is passed through the elongated through hole and slidably connected to one side of the elongated through hole. So that the adapter bracket and the armrest frame are slidably connected.

[0019] By setting up the adapter plate and the connecting bracket, a relatively simple structure is used to realize that the armrest frame can not only rotate relative to the cushion bracket, but also slide relative to the cushion bracket along its own extension direction. In addition, a pulley is set in the long strip through hole opened in the armrest frame, which can not only play a guiding role, making the movement trajectory of the armrest frame more stable, but also reduce the friction between the armrest frame and the adapter plate, so that the two can slide more smoothly. It can also bear part of the radial force.

[0020] In some embodiments, a rack is further provided at the lower edge of the armrest frame, and a gear is provided between the connecting plate and the connecting bracket. The gear and the pulley are arranged at intervals and mesh with the rack, so that the rack of the armrest frame slides in a linkage manner through the rotation of the gear, so that the armrest frame slides relative to the cushion bracket along its extension direction. And by adopting a gear rack structure, the user can stop at any position between the normal posture and the zero gravity posture when using it, thereby meeting the different needs of different users, with a wider application scenario and higher use value.

[0021] In some embodiments, the seat frame further includes a driving mechanism, which includes a driving component and a main reducer. The input end of the main reducer is connected to the driving component in a transmission manner, the output end of the main reducer is connected to the gear in a transmission manner, and the housing of the main reducer is fixedly connected to the end of the connecting plate away from the connecting bracket. This allows the user to adjust the speed of the seat by controlling the main reducer without manual adjustment, making the adjustment smoother and more comfortable to use.

[0022] In some embodiments, the seat frame further includes a leg rest, which is fixedly connected to the two connecting rods. The leg rest is fixedly connected to the connecting rods and can rotate with the connecting rods when the angle changes, thereby achieving the adjustable angle of the leg rest without adding any additional components. By adding the leg rest, part of the pressure can be transferred to the legs, further enhancing the zero-gravity effect and reducing the fatigue of the occupants when riding to the greatest extent.

[0023] In some embodiments, the seat frame further comprises a slide rail extending along a third direction, and the bottom of the cushion bracket is slidably connected to the slide rail, thereby realizing the forward and backward movement of the seat frame, further increasing the adjustable options of the seat frame.

[0024] In some embodiments, the seat frame also includes a front synchronization rod and a rear synchronization rod extending in the first direction, and the two ends of the front synchronization rod are respectively connected to the two cushion side panels and are located between the first connection point and the fulcrum. The two ends of the rear synchronization rod are respectively connected to the two cushion side panels and are located at the rear edge of the cushion side panels. The cushion frame also includes a bracket beam extending in the first direction, and the two sections of the bracket beam are fixedly connected to the two cushion brackets. By adding front and rear synchronization rods to the cushion side panel brackets, the overall strength of the cushion frame is enhanced, making the seat frame more stable when riding, and also increasing the synchronization of the seat during adjustment, thereby optimizing the user experience.

[0025] In some embodiments, the seat frame further includes a seat belt retractor, which is fixed to the support crossbeam, so that the seat belt system can be adjusted synchronously with the seat frame, thereby solving the problem of the seat belt position not matching the seat when the seat is adjusted, thereby ensuring safety performance during use.

[0026] The utility model also provides a car seat, comprising the seat frame provided by any of the above embodiments, so that a zero-gravity seat can be realized at a relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the principle of zero gravity posture;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the seat frame of the embodiment of the utility model in a normal posture;

[0029] Figure 3 This is a schematic diagram of the matching structure of the seat frame, the armrest frame, the backrest frame and the connecting rod when the seat frame of the embodiment of the utility model is in a normal posture;

[0030] Figure 4 This is a side view of the structure of the seat frame of the embodiment of the utility model in a normal posture;

[0031] Figure 5a and Figure 5b It is a partial structural schematic diagram of the seat frame of the embodiment of the utility model in a normal posture and a zero-gravity posture;

[0032] Figure 6 It is a structural schematic diagram of another perspective of the zero-gravity posture of the seat frame of the embodiment of the utility model;

[0033] Figure 7 This is a schematic diagram of the coordination of the armrest frame, the adapter bracket and the seat cushion bracket in the seat frame of the embodiment of the utility model;

[0034] Figure 8 This is a schematic diagram of the cooperation between the driving mechanism and the adapter bracket in the seat frame of the embodiment of the utility model;

[0035] Fig. 9 A schematic diagram of the cooperation between the driving mechanism and the adapter bracket in the seat frame of the embodiment of the utility model from another perspective;

[0036] Fig.10 It is a schematic diagram of the coordination of the front synchronization rod, the rear synchronization rod, the support cross beam and the cushion side plate in the seat frame of the embodiment of the utility model;

[0037] Fig.11 It is a schematic diagram of the coordination of the front synchronization rod, the rear synchronization rod, the support beam and the cushion side panel in the seat frame of the embodiment of the utility model from another perspective;

[0038] Fig.12 This is a schematic diagram of the cooperation between the seat belt retractor and the support crossbeam in the seat frame of the embodiment of the utility model;

[0039] Fig.13It is a schematic diagram of the cooperation between the starting end of the safety belt and the slide rail in the seat frame of the embodiment of the utility model.

[0040] Description of reference numerals:

[0041] 1. Seat frame;

[0042] 11. Seat cushion frame; 111. Seat cushion bracket;

[0043] 112, seat cushion side panel; 112A, first connection point; 112B, second connection point; 112C, fulcrum;

[0044] 12. armrest frame; 121. through hole; 122. rack;

[0045] 13. Backrest frame; 14. Connecting rod; 141. Leg support;

[0046] 15. Front synchronization rod; 16. Rear synchronization rod; 17. Support crossbeam;

[0047] 2. Adapter bracket;

[0048] 21. Connecting plate; 22. Connecting bracket; 23. Pulley; 24. Gear;

[0049] 3. Driving mechanism; 31. Driving components; 32. Main reducer;

[0050] 4. Seat belt retractor; 41. Seat belt; 41A. Starting end of seat belt;

[0051] 5. Slide rail;

[0052] x, third direction; z, second direction; y, first direction. DETAILED DESCRIPTION

[0053] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0054] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0055] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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 therefore cannot be understood as a limitation on the utility model.

[0056] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0057] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0058] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0059] It should be noted that, for the convenience of explanation, the length direction of the car is taken as the third direction x, the width direction of the car is taken as the first direction y, and the height direction of the car is taken as the second direction z. In addition, the directions such as up and down, front and back, left and right described in the text are based on the general perspective of the occupants sitting in the cockpit.

[0060] See also Figure 1 , Figure 1 Schematic diagram of the principle of zero gravity posture.

[0061] First, the definition of zero-gravity chair is explained. Figure 1As shown in the figure, zero-gravity seats refer to seats that can fit the posture of the human body in a zero-gravity environment when it is relaxed and without applying external forces. This posture in zero gravity can resist gravity to the maximum extent, thereby reducing the pressure on the human body. Compared with ordinary seats, the pressure of ordinary seats is concentrated on the buttocks and thigh roots, and the comfort is not good when riding for a long time. Zero-gravity seats can match the seat and the human body according to the curve characteristics of the human body, allowing the seat to fully fit the human body and evenly distribute the pressure on the back and waist, etc., which greatly reduces the fatigue when riding, so it is becoming more and more popular with users.

[0062] However, to realize zero-gravity seats, the backrest and seat cushion need to be linked as a whole. Compared with ordinary seats, more parts need to be adjusted, and the structure is correspondingly more complicated. Therefore, zero-gravity seats in the prior art are not easy to popularize due to their complex structure and high cost, and are usually limited to mid-to-high-end models.

[0063] It should be noted that the "zero gravity posture" that appears in the following text is the chair posture of the human body when relaxed and without applying external force in the aforementioned zero gravity environment, and the "normal posture" is the chair posture of the ordinary chair mentioned above, which will not be repeated in the following text.

[0064] Therefore, the utility model provides a seat frame for a car seat and a car seat, which solves the problem that the zero-gravity seat provided in the prior art cannot achieve a zero-gravity effect while taking into account a simple structure.

[0065] See also Figure 2-Figure 3 , Figure 2 This is a schematic diagram of the three-dimensional structure of the seat frame of the embodiment of the utility model in a normal posture; Figure 3 It is a schematic diagram of the matching structure of the seat cushion frame, the armrest frame, the backrest frame and the connecting rod when the seat frame of the embodiment of the utility model is in a normal posture.

[0066] like Figure 2-Figure 3 As shown, the seat frame 1 includes a seat cushion frame 11 , two armrest frames 12 , a backrest frame 13 and two connecting rods 14 .

[0067] The seat cushion frame 11 includes two seat cushion brackets 111 arranged opposite to each other in the first direction y, and two seat cushion side panels 112 arranged corresponding to the two seat cushion brackets 111, each of the two seat cushion side panels 112 has a first connection point 112A, a fulcrum 112C and a second connection point 112B distributed in sequence (the structure here can also be referred to as Figure 5a-Figure 5b ), the fulcrum 112C of each cushion side panel 112 is rotatably connected to the corresponding cushion bracket 111.

[0068] The two armrest frames 12 are arranged corresponding to the two cushion brackets 111 and the two cushion side panels 112, and each of the two armrest frames 12 is spaced apart from the corresponding cushion side panel 112 in the second direction z, and each armrest frame 12 is rotatably connected to the corresponding cushion bracket 111 and can slide relative to the cushion bracket 111 along its own extension direction.

[0069] The backrest frame 13 is rotatably connected to the rear of the corresponding armrest frame 12 at two opposite sides in the first direction y, and is also rotatably connected to the second connection point 112B of the corresponding seat cushion side panel 112.

[0070] The two connecting rods 14 are arranged corresponding to the two seat cushion side panels 112 and the two armrest frames 12, and the two connecting rods 14 and the backrest frame 13 are spaced apart in the third direction x, and each of the two connecting rods 14 is rotatably connected to the front part of the corresponding armrest frame 12 and the first connection point 112A of the corresponding seat cushion side panel 112; wherein the first direction y, the second direction z and the third direction x are perpendicular to each other.

[0071] At this time, the two cushion side panels 112, the two armrest frames 12, the backrest frame 13 and the two connecting rods 14 can be regarded as two four-bar linkages spaced apart in the first direction y. A single four-bar linkage is composed of the cushion side panels 112, the armrest frames 12, parts of the backrest frames 13 and the connecting rods 14 connected end to end. Among them, the connecting rods 14 and the backrest frames 13 are two driven rods, and the two ends are rotatably connected to the corresponding armrest frames 12 and the cushion side panels 112 respectively. The cushion side panels 112 are rotatably connected to the cushion bracket 111 through the fulcrum 112C, and the armrest frame 12 is rotatably connected to the cushion bracket 111, so that the four-bar linkage is installed on the cushion bracket 111 as a whole. And the armrest frame 12 can slide relative to the cushion bracket 111 in its own extension direction.

[0072] To make the effect clearer, see Figure 4-Figure 6 , Figure 4 This is a side view of the structure of the seat frame of the embodiment of the utility model in a normal posture; Figure 5a and Figure 5b It is a partial structural schematic diagram of the seat frame of the embodiment of the utility model in a normal posture and a zero-gravity posture; Figure 6 This is a structural schematic diagram of the seat frame in zero gravity posture from another perspective of an embodiment of the utility model.

[0073] like Figure 4-Figure 6 As shown, combined with Figure 2-Figure 3It is understood that when the seat frame 1 is switched between the normal posture and the zero-gravity posture, the armrest frame 12 is used as the active part, so that it slides relative to the cushion bracket 111 in its own extension direction, and drives the connecting rod 14 and the backrest frame 13, so that the connecting rod 14 and the backrest frame 13 rotate with the connection point with the lower cushion side panel 112 as the axis, thereby realizing the angle adjustment of the connecting rod 14 and the backrest frame 13. At the same time, the connecting rod 14 and the backrest frame 13 also link the lower cushion side panel 112, so that the cushion side panel 112 rotates with the fulcrum 112C as the axis, and at this time the armrest frame 12 also rotates relative to the cushion bracket 111, thereby realizing the overall angle adjustment of the seat frame 1. The combination of the two realizes the purpose of switching the seat frame 1 between the normal posture and the zero-gravity posture.

[0074] By setting such a structure, the seat frame 1 can be switched from a normal sitting posture to a zero-gravity posture without adding a connecting rod or other mechanisms, and the structure is simple and the cost is low, which is conducive to the popularization of zero-gravity seats. The switching steps are relatively simple and easy to use.

[0075] The above is a preliminary description of the structure of the utility model. It should be noted that the structure and matching relationship of each component are not limited. The possible specific structure and function of each component will be specifically described below.

[0076] It should be noted that the connection method between the armrest frame 12 and the seat cushion bracket 111 is not limited.

[0077] See also Figure 7 , Figure 7 It is a schematic diagram of the coordination of the armrest frame, the adapter bracket and the seat cushion bracket in the seat frame of the embodiment of the utility model.

[0078] like Figure 7 As shown, combined with Figure 3 It is understood that, in one embodiment, each armrest frame 12 is rotationally connected to the corresponding cushion bracket 111 through an adapter bracket 2. Among them, the adapter bracket 2 is slidably connected to the armrest frame 12, and the adapter bracket 2 is rotationally connected to the cushion bracket 111, so that the armrest frame 12 and the adapter bracket 2 can rotate relative to the cushion bracket 111, and the armrest frame 12 can slide relative to the cushion bracket 111 along its extension direction. It can be understood here that by adding an adapter bracket 2, the armrest frame 12 can be realized to be able to rotate relative to the cushion bracket 111 and slide relative to the cushion bracket 111 along its own extension direction. Therefore, the adapter bracket 2 is slidably connected to the armrest frame 12 and rotationally connected to the cushion bracket 111. By providing the adapter bracket 2, while ensuring the simplicity of the structure, the movement trajectory of the armrest frame 12 is also made more controllable.

[0079] It should be noted that the specific structure and thickness of the seat cushion bracket 111 are not limited.

[0080] In order to enhance the structural strength, Figure 2-Figure 3 As shown, in one example, the seat cushion bracket 111 can be an "A"-shaped structure as a whole, and the sheet metal thickness is set to 3 mm, so that the seat cushion bracket 111 has a reliable structure, good support, and a long service life.

[0081] The specific structure and thickness of the armrest frame 12 are not limited.

[0082] Also for the purpose of strengthening the structural strength, in one example, the armrest frame 12 can be an "L"-shaped structure as a whole, and the sheet metal thickness is set to 6 mm to ensure that the armrest frame 12 as an active component can withstand a large force and remain stable under long-term use. Furthermore, it can be understood by those skilled in the art that the specific structure of the adapter bracket 2 is not limited. The following is an example of a possible structure of the adapter bracket 2.

[0083] See also Figure 8 , Figure 8 It is a schematic diagram of the cooperation between the driving mechanism and the adapter bracket in the seat frame of the embodiment of the utility model.

[0084] like Figure 8 As shown, combined with Figure 3 and Figure 7 It is understood that further, the adapter bracket 2 includes a connecting plate 21, a connecting bracket 22 and a pulley 23. The connecting plate 21 is rotatably connected to the cushion bracket 111; the connecting bracket 22 is fixedly connected to one side of the connecting plate 21, so that the conversion bracket is rotatably connected to the cushion bracket 111 through the connecting plate 21, and the two ends of the pulley 23 are rotatably connected to the connecting plate 21 and the connecting bracket 22. An elongated through hole 121 is opened on the armrest frame 12. The area of ​​the armrest frame 12 on one side of the elongated through hole 121 is located between the connecting plate 21 and the connecting bracket 22, and the pulley 23 is penetrated through the elongated through hole 121 and slidably connected to one side of the elongated through hole 121. So that the adapter bracket 2 and the armrest frame 12 are slidably connected. Here, it can be understood that the adapter bracket 2 specifically includes a connecting plate 21, a connecting bracket 22 and a pulley 23. Among them, the connecting plate 21 is rotatably connected to the connecting bracket 22, so that the armrest frame 12 can rotate relative to the cushion bracket 111. The pulley 23 is rotatably connected to the adapter bracket 2, and is disposed in the long strip through hole 121 provided on the armrest frame 12, and is slidably connected to the through hole 121 (or the armrest frame 12), so that the armrest frame 12 can slide in its own extension direction relative to the seat cushion bracket 111. Finally, the armrest frame 12 can be rotated relative to the seat cushion bracket 111, and can slide relative to the seat cushion bracket 111 along its own extension direction.

[0085] By providing the connecting plate 21 and the connecting bracket 22, a relatively simple structure is used to realize that the armrest frame 12 can not only rotate relative to the cushion bracket 111, but also slide relative to the cushion bracket 111 along its own extension direction. A pulley 23 is provided in the long strip through hole 121 provided in the armrest frame 12, which can not only play a guiding role, making the movement trajectory of the armrest frame 12 more stable, but also reduce the friction between the armrest frame 12 and the adapter, so that the two can slide more smoothly. It can also bear part of the radial force, making the relevant mechanism more durable and having a longer service life.

[0086] The above is an exemplary description of the specific structure of the adapter bracket 2. It can also be further improved so that the seat frame 1 can stop at any intermediate state when switching between the zero-gravity posture and the normal posture, so as to better meet the different needs of different users.

[0087] So further, if Figure 7 As shown, in some embodiments, a rack 122 is further provided at the lower edge of the armrest frame 12, and a gear 24 is provided between the connecting plate 21 and the connecting bracket 22. The gear 24 and the pulley 23 are arranged at intervals and mesh with the rack 122, so that the rack 122 of the armrest frame 12 slides by the rotation of the gear 24, so that the armrest frame 12 slides relative to the cushion bracket 111 along its extension direction. And by adopting the gear rack structure, the user can stop at any position between the normal posture and the zero gravity posture when using it, thereby meeting the different needs of different users, with a wider application scenario and higher use value.

[0088] Those skilled in the art will appreciate that the specific structure of the pulley 23 is also not limited.

[0089] like Figure 8 As shown, in one embodiment, the pulley 23 may include two pulleys 23 spaced apart in the third direction x, so as to achieve multi-point force, more stable support, smoother operation, and less noise. In another achievable embodiment, the pulley 23 may also be single or more than two to save costs or meet special needs, and the utility model is not limited here.

[0090] The above is a description of the specific structure of the adapter bracket 2. According to specific needs, a driving mechanism can be added on this basis so that the user does not need to make manual adjustments.

[0091] See also Fig. 9 , Fig. 9 It is a schematic diagram showing the coordination of the driving mechanism and the adapter bracket in the seat frame of the embodiment of the utility model from another perspective.

[0092] like Fig. 9 As shown, combined with Figure 3and Figure 8 It is understood that in one embodiment, the seat frame 1 also includes a driving mechanism 3, and the driving mechanism 3 includes a driving component 31 and a main reducer 32. The input end of the main reducer 32 is transmission-connected to the driving component 31, and the output end of the main reducer 32 is transmission-connected to the gear 24. The housing of the main reducer 32 is fixedly connected to the end of the connecting plate 21 away from the connecting bracket 22. The power is output by the driving component 31 and transmitted to the main reducer 32. After the power is decelerated and torque-increased inside the main reducer 32, it is transmitted to the aforementioned gear 24, and the gear 24 drives the rack 122, thereby driving the relevant mechanism to achieve the adjustment of the seat frame 1. This eliminates the need for manual adjustment by the user, and allows the speed of adjusting the seat to be controlled by the main reducer 32, making the adjustment smoother and more comfortable to use.

[0093] It can be understood by those skilled in the art that the specific structure of the aforementioned drive mechanism 3 is not limited. For example, in one embodiment, the drive mechanism 3 may include two drive components 31 and two main reducers 32, which are set in a set and correspondingly arranged on both sides of the seat frame 1, and are connected to the gears 24 on both sides. This allows driving from both sides, enhances synchronization, makes adjustment smooth, and makes riding comfortable. In another alternative embodiment, it is also possible to set a drive structure on only one side to reduce costs. The utility model is not limited here.

[0094] Further, such as Figure 6 As shown, in one embodiment, the seat frame 1 may further include a slide rail 5 extending along the third direction x, and the bottom of the cushion bracket 111 is slidably connected to the slide rail 5. This allows the seat frame 1 to be adjusted forward and backward, further increasing the adjustable options of the seat frame 1.

[0095] The above is a detailed description of the relevant structures of the seat frame to achieve posture adjustment. The comfort and safety performance of the seat can be further improved.

[0096] For example, Figure 2 As shown, the seat frame 1 may also include a leg rest 141, which is fixedly connected to the two connecting rods 14. The leg rest 141 is fixedly connected to the connecting rod 14, and can rotate with the connecting rod 14 when the angle changes, thereby achieving the adjustable angle of the leg rest 141 without adding any additional components. By adding the leg rest 141, part of the pressure can be transferred to the legs, further enhancing the zero gravity effect and reducing the fatigue of the occupants when riding to the greatest extent.

[0097] It should be noted that the specific matching mode of the leg support 141 and the connecting rod 14 is not limited. In one embodiment, the leg support 141 and the connecting rod 14 can be a split structure fixed to each other. In another alternative embodiment, the leg support 141 and the connecting rod 14 can also be an integrated structure formed in one piece. The utility model is not limited here.

[0098] The specific structure of the leg support 141 is also not limited. In one embodiment, the leg support 141 can be a curved iron pipe structure, and both ends are welded to the lower end of the connecting rod 14. The utility model is also not limited here.

[0099] The above is a detailed description of the leg support part. In order to enhance the synchronization of the seat frame 1 during movement, additional structural parts such as synchronization rods may be provided.

[0100] See also Figure 10-11 , Fig.10 It is a schematic diagram of the coordination of the front synchronization rod, the rear synchronization rod, the support cross beam and the cushion side plate in the seat frame of the embodiment of the utility model; Fig.11 It is a schematic diagram of the coordination of the front synchronization rod, the rear synchronization rod, the bracket cross beam and the seat cushion side panel in the seat frame of the embodiment of the utility model from another perspective.

[0101] like Figure 10-11 As shown, combined with Figure 2 It is understood that in one embodiment, the seat frame 1 further includes a front synchronization rod 15 and a rear synchronization rod 16 extending in the first direction y, and the two ends of the front synchronization rod 15 are respectively connected to the two cushion side panels 112 and are located between the first connection point 112A and the fulcrum 112C. The two ends of the rear synchronization rod 16 are respectively connected to the two cushion side panels 112 and are located at the rear edge of the cushion side panels 112. The seat frame 1 also includes a bracket crossbeam 17 extending in the first direction y, and the two sections of the bracket crossbeam 17 are fixedly connected to the two cushion brackets 111. By adding the front and rear synchronization rods 16 to the cushion side panel 112 bracket, the overall strength of the cushion frame 11 is enhanced, making the seat frame 1 more stable when sitting, and also increasing the synchronization of the seat frame 1 when adjusting, optimizing the user experience. A bracket crossbeam 17 connecting the cushion brackets 111 at both ends is provided, which further strengthens the overall strength of the seat frame 1 and also provides a platform for family and modular design, so as to provide various modules, such as electrical modules, for later installation.

[0102] For example, a seat belt retractor may be provided on the support cross beam 17 to solve the problem of conflict between the seat belt position and the seat when the seat is adjusted.

[0103] See also Fig.12 , Fig.12 It is a schematic diagram of the cooperation between the seat belt retractor and the support cross beam in the seat frame of the embodiment of the utility model.

[0104] like Figure 10-12 As shown, in one embodiment, the seat frame 1 further includes a seat belt retractor 4, which is fixed to the support cross beam 17. The seat belt system can be adjusted synchronously with the seat frame 1, thereby solving the problem that the seat belt position does not match the seat when the seat is adjusted, thereby ensuring safety performance during use.

[0105] It should be noted that the specific structure of the seat belt connected to the seat belt retractor 4 is not limited.

[0106] See also Fig.13 , Fig.13 It is a schematic diagram of the cooperation between the starting end of the safety belt and the slide rail in the seat frame of the embodiment of the utility model.

[0107] like Fig.13 As shown, combined with Figure 4 and Fig.12 It is understood that, in one embodiment, the starting end 41A of the safety belt can be disposed at the rear of the slide rail 5 and is rotatably connected to the slide rail 5. The safety belt 41 crosses the backrest frame 13 from the front and is finally received by the safety belt retractor 4. Thus, when the seat is adjusted, the safety belt 41 and the seat frame 1 will not be relatively displaced, thereby ensuring safety performance.

[0108] The utility model also provides a car seat, which comprises the seat frame mentioned above, so that a zero-gravity seat can be realized at a relatively low cost.

[0109] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A seat frame for a car seat, characterized in that: The seat frame comprises: A seat cushion frame, the seat cushion frame comprising two seat cushion brackets arranged opposite to each other in a first direction, and two seat cushion side panels arranged corresponding to the two seat cushion brackets, each of the two seat cushion side panels having a first connection point, a fulcrum and a second connection point which are sequentially spaced and distributed, and each fulcrum of the seat cushion side panels is rotatably connected to the corresponding seat cushion bracket; Two armrest frames, the two armrest frames are arranged corresponding to the two seat cushion brackets and the two seat cushion side panels, and each of the two armrest frames is spaced apart from the corresponding seat cushion side panel in the second direction, and each of the armrest frames is rotatably connected to the corresponding seat cushion bracket and can slide relative to the seat cushion bracket along its own extension direction; A backrest frame, wherein two opposite sides of the backrest frame in the first direction are respectively rotatably connected to the rear of the corresponding armrest frame, and are also respectively rotatably connected to the second connection points of the corresponding seat cushion side panels; Two connecting rods, the two connecting rods are arranged corresponding to the two seat cushion side panels and the two armrest frames, the two connecting rods and the backrest frame are spaced apart in the third direction, and each of the two connecting rods is rotatably connected to the front part of the corresponding armrest frame and the first connection point of the corresponding seat cushion side panel; wherein the first direction, the second direction and the third direction are perpendicular to each other.

2. The seat frame according to claim 1, characterized in that: Each of the armrest frames is rotatably connected to a corresponding seat cushion bracket via an adapter bracket; Wherein, the adapter bracket is slidably connected to the armrest frame, and the adapter bracket is rotatably connected to the cushion bracket, so that the armrest frame and the adapter bracket can rotate relative to the cushion bracket, and the armrest frame can slide relative to the cushion bracket along its extension direction.

3. The seat frame according to claim 2, characterized in that: The adapter bracket includes a connecting plate, a connecting bracket and a pulley, the connecting plate is rotatably connected to the cushion bracket, the connecting bracket is fixedly connected to one side of the connecting plate, so that the adapter bracket is rotatably connected to the cushion bracket through the connecting plate, and both ends of the pulley are rotatably connected to the connecting plate and the connecting bracket; The armrest frame has an elongated through hole, and the armrest frame is located between the connecting plate and the connecting bracket in an area on one side of the elongated through hole. The pulley is passed through the elongated through hole and is slidably connected to one side of the elongated through hole, so that the adapter bracket is slidably connected to the armrest frame.

4. The seat frame according to claim 3, characterized in that: A rack is provided on the lower edge of the armrest frame, and a gear is provided between the connecting plate and the connecting bracket. The gear is spaced apart from the pulley and meshes with the rack, so that the rack of the armrest frame can slide in linkage with the rotation of the gear, so that the armrest frame slides relative to the cushion bracket along its extension direction.

5. The seat frame according to claim 4, characterized in that: The seat frame also includes a driving mechanism, which includes a driving component and a main reducer. The input end of the main reducer is transmission-connected to the driving component, the output end of the main reducer is transmission-connected to the gear, and the housing of the main reducer is fixedly connected to the side of the connecting plate away from the connecting bracket.

6. The seat frame according to any one of claims 1 to 5, characterized in that: The seat frame also includes a leg support, which is fixedly connected to the two connecting rods.

7. The seat frame according to any one of claims 1 to 5, characterized in that: The seat frame also includes a slide rail extending along the third direction; the bottom of the seat cushion bracket is slidably connected to the slide rail.

8. The seat frame according to any one of claims 1 to 5, characterized in that: The seat frame further comprises a front synchronization rod and a rear synchronization rod extending in the first direction, the two ends of the front synchronization rod are respectively connected to the two seat cushion side panels and are located between the first connection point and the fulcrum; the two ends of the rear synchronization rod are respectively connected to the two seat cushion side panels and are located at the rear edges of the two seat cushion side panels; The seat cushion frame also includes a support crossbeam extending in a first direction, and two ends of the support crossbeam are fixedly connected to the two seat cushion supports.

9. The seat frame according to claim 8, characterized in that: The seat frame also includes a seat belt retractor, which is fixed to the support crossbeam.

10. A car seat, characterized in that: It comprises the seat frame according to any one of claims 1-9.

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