Chair back assembly and automobile seat using same

Abstract

The utility model discloses a chair back assembly and an automobile seat using the chair back assembly. The chair back assembly comprises a chair back supporting frame, the chair back framework comprises a framework plate used for supporting the back of a human body and a headrest assembly detachably connected with the framework plate in a matched mode; the framework plate is in running fit with the chair back support frame along the upper end part of the height direction of the chair; the headrest assembly comprises a headrest block, a supporting seat connected with the headrest block and a driving structure fixed to the framework plate and used for driving the supporting seat to do lifting motion in the height direction of the seat. The framework angle adjusting assembly comprises a movable rod which is rotatably connected with the lower end part of the framework plate along the height direction of the seat in a matched manner, and a screw rod module which is connected with the movable rod and is used for pushing and pulling the movable rod; and the screw rod module is fixed on the chair back support frame. According to the utility model, the disassembly and assembly convenience can be improved, and the delivery logistics transportation cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a backrest assembly and an automobile seat using the same. Background Art

[0002] For a single-seat used inside an automobile, considering the convenience of adjusting the backrest angle, in the prior art, generally an automobile seat with adjustable seat angle, such as the one disclosed in the patent with publication number CN214028313U, is adopted. The backrest and the seat cushion are connected by a rotating shaft, so that the backrest can adjust the angle relative to the seat cushion to meet the usage requirements of different people. Another example is an automobile seat with adjustable seat back angle disclosed in the patent with publication number CN212500020U. For such automobile seats, the functional components for adjusting the angle of the backrest relative to the seat cushion are all arranged between the backrest and the seat cushion.

[0003] For the automobile seats in the above situation, although the backrest can be adjusted, it is found through actual research that for such automobile seats, during the assembly process in the factory of the manufacturer, the backrest and the seat cushion need to be assembled and formed, and then transported to the user factory through logistics. In this case, for the assembled backrest and seat cushion, the overall product volume is large and the transportation cost is high. In addition, the disassembly and assembly between the seat cushion and the backrest of such an automobile seat are relatively complicated. When the seat cushion or the backrest needs to be replaced separately, the operation difficulty is large, and basically only the whole seat can be replaced.

[0004] In addition, for high-end business vehicles, users' requirements for the comfort and convenience of using automobile seats are also getting higher and higher, and the seats generally used in the prior art are difficult to meet the usage requirements of current high-end models.

[0005] Therefore, for the automobile seats used in the prior art, in terms of the convenience of disassembly and assembly of their structures and reducing the factory transportation cost, their structures need to be further optimized. Summary of the Utility Model

[0006] The first object of the utility model is to provide a backrest assembly to solve the technical problems of improving its disassembly and assembly convenience and reducing the factory transportation cost.

[0007] The second object of the utility model is to provide an automobile seat to solve the technical problem of optimizing the overall performance of the used automobile seat.

[0008] The backrest assembly of the utility model is realized as follows:

[0009] A backrest assembly includes:

[0010] A backrest support frame;

[0011] A backrest frame, which includes a frame plate for supporting the human back and a headrest assembly detachably connected to the frame plate; the upper end of the frame plate in the seat height direction is rotationally engaged with a backrest support frame; the headrest assembly includes a headrest block, a support seat connected to the headrest block, and a drive structure fixed on the frame plate for driving the support seat to move up and down in the seat height direction;

[0012] A frame angle adjustment assembly, which includes a movable rod rotationally engaged with the lower end of the frame plate in the seat height direction, and a lead screw module connected to the movable rod for pushing and pulling the movable rod; the lead screw module is fixed on the backrest support frame.

[0013] In an optional implementation case of the present utility model, the lead screw module includes a first lead screw and a first lead nut used in cooperation, and a driver for driving the first lead screw to operate; and

[0014] The movable rod is recessed with a U-shaped accommodation groove suitable for partial insertion of the first lead screw; and the movable rod is connected to the first lead nut.

[0015] In an optional implementation case of the present utility model, the lead screw module is fixed at the upper middle position of the backrest support frame in the seat height direction.

[0016] In an optional implementation case of the present utility model, the upper end of the frame plate in the seat height direction is rotationally engaged with the backrest support frame through a pair of connecting ears.

[0017] In an optional implementation case of the present utility model, the support seat includes a pair of parallelly distributed support columns fixedly connected to the headrest block, and a movable plate simultaneously connected to the ends of the pair of support columns away from the headrest block; wherein

[0018] Each support column extends along the seat height direction.

[0019] In an optional implementation case of the present utility model, the drive structure includes a linear lead screw module connected to the movable plate;

[0020] The linear lead screw module includes a second lead nut connected to the movable plate, a second lead screw cooperating with the second lead nut, and a power component for driving the second lead screw to operate.

[0021] In an optional implementation case of the present utility model, two hollow sleeves extending along the seat height direction are fixedly provided on the frame plate; and

[0022] A pair of support columns penetrate through the two hollow sleeves one by one.

[0023] The automobile seat of the present utility model is realized as follows:

[0024] An automotive seat, comprising: a bottom support frame, a seat cushion assembly disposed on the bottom support frame, and a backrest assembly connected to the bottom support frame;

[0025] The backrest support frame is vertically connected to the bottom support frame.

[0026] In an alternative embodiment of the present utility model, the seat cushion assembly includes a seat cushion frame slidably mated with the bottom support frame through a slide rail module.

[0027] In an alternative embodiment of the present utility model, the seat cushion frame has a hollow accommodation cavity, and an opening communicating with the accommodation cavity is provided on the side end face of the seat cushion frame facing away from the backrest support frame; and

[0028] A drawer adapted to be drawn out and inserted from the opening is slidably mated in the accommodation cavity.

[0029] Adopting the above technical solution, the present utility model has the following beneficial effects: For the backrest assembly and the automotive seat using the same of the present utility model, for the backrest assembly, the rotation of the backrest frame relative to the backrest support frame does not depend on the seat cushion frame, thereby simplifying the assembly process of the overall automotive seat. In this way, when the backrest assembly needs to be replaced or the seat cushion assembly needs to be replaced, it can be replaced separately, improving the flexibility of use. At the same time, for the transportation process, the seat cushion assembly and the backrest assembly can also be transported in a separated state. After the transportation reaches the usage scenario, the seat cushion assembly and the backrest assembly can be respectively assembled with the bottom support frame. In this split transportation mode, compared with the large-volume transportation situation, the logistics cost can be reduced.

[0030] In addition, by providing a drawer in the seat cushion frame, the storage requirement can be met, thereby improving the comfort during use when it is applied to high-end vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural view of the automotive seat of the present utility model from a first perspective;

[0032] Figure 2 is a schematic structural view of the automotive seat of the present utility model from a second perspective;

[0033] Figure 3 is a schematic structural view of the automotive seat of the present utility model from a third perspective;

[0034] Figure 4 is a schematic partial structural view of the automotive seat of the present utility model.

[0035] In the figure: backrest support frame 1, skeleton plate 21, connecting ear 22, movable rod 23, first lead screw 24, first nut 25, driver 26, U-shaped accommodating groove 27, headrest block 31, support seat 32, support column 33, second nut 51, second lead screw 52, hollow sleeve 53, bottom support frame 54, power component 55, slide rail module 61, seat cushion skeleton 62, drawer 7, reinforcing connecting rod 8. Specific Embodiment

[0036] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments in conjunction with the accompanying drawings.

[0037] Embodiment 1:

[0038] Please refer to Figures 1 to 4 As shown, this embodiment provides a backrest assembly, which can be applied to automobile seats, and of course can also be other seats. There is no absolute limitation in this regard for this embodiment. Specifically, the backrest assembly adopted in this embodiment includes: a backrest support frame 1 and a backrest skeleton used in cooperation.

[0039] Next, in detail, first is the backrest skeleton, which includes a skeleton plate 21 for supporting the human back and a headrest assembly detachably connected to the skeleton plate 21. In order to realize the cooperation with the headrest assembly, a support beam can be provided on the skeleton plate 21 to assemble the headrest assembly.

[0040] Furthermore, the upper end of the skeleton plate 21 in the seat height direction is rotatably matched with the backrest support frame 1; that is to say, when adjusting the use angle of the skeleton plate 21, it rotates around its upper end in the seat height direction. Taking a situation as an example in combination with the accompanying drawings, the upper end of the skeleton plate 21 in the seat height direction is rotatably matched with the backrest support frame 1 through a pair of connecting ears 22.

[0041] In addition, the adjustment of the use angle of the specific backrest skeleton is realized through a skeleton angle adjustment component. The skeleton angle adjustment component includes a movable rod 23 rotatably connected to the lower end of the skeleton plate 21 in the seat height direction, and a lead screw module connected to the movable rod 23 for pushing and pulling the movable rod 23; the lead screw module is fixed on the backrest support frame 1. The lead screw module here includes a first lead screw 24 and a first nut 25 used in cooperation, and a driver 26 for driving the first lead screw 24 to operate. The driver 26 here can be optionally a motor or a motor and a torque transmission part used in cooperation.

[0042] Regarding the above structure, it is also necessary to note that in order to enable the movable rod 23 to adapt to the usage requirements of the lead screw module, a U-shaped accommodation groove 27 suitable for partial insertion of the first lead screw 24 is recessed in the movable rod 23; and the movable rod 23 is connected to the first lead screw nut 25. The lead screw module is fixed at the upper middle position of the backrest support frame 1 along the seat height direction.

[0043] Based on the above structure, when the first lead screw nut 25 moves along the axial direction of the first lead screw 24 towards the side of the skeleton plate 21, the movable rod 23 gradually moves away from the backrest support frame 1 along with the first lead screw nut 25, and the included angle formed between the backrest skeletons also gradually increases in this case; when the first lead screw nut 25 moves along the axial direction of the first lead screw 24 towards the side of the backrest support frame 1, the movable rod 23 gradually approaches the backrest support frame 1 along with the first lead screw nut 25, and the included angle formed between the backrest skeletons also gradually decreases in this case.

[0044] Therefore, regarding the adjustment process of the angle formed by the backrest skeleton relative to the backrest support frame 1, only the rotation direction of the first lead screw 24 needs to be controlled, so it is convenient to use. And it can be understood that, from the perspective of installation here, the lead screw module and the movable rod 23 can form a unit structure. The driver 26 used in the lead screw assembly is fixedly installed on the backrest support frame 1, and then a direct or indirect hinge fitting structure can be formed between the end of the movable rod 23 far from the driver 26 and the skeleton plate 21, so the assembly and disassembly processes are very convenient.

[0045] Next, what needs to be described is the headrest assembly adopted in this embodiment:

[0046] Generally, the headrest assembly includes a headrest block 31, a support seat 32 connected to the headrest block 31, and a driving structure fixed on the skeleton plate 21 for driving the support seat 32 to move up and down along the seat height direction.

[0047] More specifically, taking an example in combination with the attached drawings, the support seat 32 includes a pair of parallel distributed support columns 33 fixedly connected to the headrest block 31, and a movable plate simultaneously connected to the ends of the pair of support columns 33 far from the headrest block 31; each support column 33 extends along the seat height direction.

[0048] Furthermore, in an optional implementation manner, the driving structure includes a linear lead screw module connected to the movable plate; the linear lead screw module includes a second lead screw nut 51 connected to the movable plate, a second lead screw 52 cooperating with the second lead screw nut 51, and a power member 55 for driving the second lead screw 52 to rotate. The power member 55 can optionally adopt a motor and / or a motor unit used in cooperation, and this can optionally adopt any mature means in the prior art.

[0049] When the second lead nut 51 moves axially along the second lead screw 52 away from the headrest block 31, the movable plate gradually moves away from the headrest block 31 along with the first lead nut 25. In this case, the headrest block 31 is in a descending state relative to the seat itself; when the second lead nut 51 moves axially along the second lead screw 52 towards the headrest block 31, the movable plate gradually approaches the headrest block 31 along with the second lead nut 51. In this case, the headrest block 31 is in an ascending state relative to the seat itself. Therefore, for the adjustment of the use height of the headrest block 31 in this embodiment, only the movement direction of the second lead nut 51 needs to be controlled, so it is efficient and convenient to use.

[0050] In addition, in order to improve the reliability of the use and adjustment process of the headrest block 31, two hollow sleeves 53 extending along the height direction of the seat are fixedly provided on the skeleton plate 21 in this embodiment; and a pair of support columns 33 penetrate through the two hollow sleeves 53 one by one.

[0051] In summary, the rotation of the backrest skeleton relative to the backrest support frame 1 does not depend on the seat cushion part of the seat, thus simplifying the overall assembly process of the car seat. In this way, when the backrest assembly needs to be replaced, it can be replaced separately, improving the flexibility of use.

[0052] Embodiment 2:

[0053] Please refer to Figures 1 to 4 As shown, on the basis of the backrest assembly of Embodiment 1, this embodiment provides an automobile seat, including: a bottom support frame 54, a seat cushion assembly provided on the bottom support frame 54, and the backrest assembly of Embodiment 1 connected to the bottom support frame 54; wherein the backrest support frame 1 is vertically connected to the bottom support frame 54. The bottom support frame 54 here is used to be fixed in the carriage of the automobile seat. Considering that in order to improve the strength and reliability of the matching structure formed by the backrest support frame 1 and the bottom support frame 54, an inclined distribution strengthening connecting rod 8 can also be provided between the backrest support frame 1 and the bottom support frame 54.

[0054] Furthermore, the seat cushion assembly includes a seat cushion skeleton 62 slidably mated with the bottom support frame 54 through a slide rail module 61. For the slide rail module 61 here, any mature means in the prior art can be optionally adopted. This embodiment does not make improvements to it, so the specific structure and implementation principle are not absolutely limited, that is, as long as the slide rail module 61 that can make the seat cushion skeleton 62 slide relative to the bottom support frame 54 and is suitable for the vehicle seat meets the use requirements of this embodiment.

[0055] On the basis of the above situation, it should also be noted that the car seat of this embodiment can be used in high-end business models. To improve the comfort during use, the seat cushion frame 62 of this embodiment has a hollow accommodation cavity, and an opening communicating with the accommodation cavity is provided on the side end face of the seat cushion frame 62 facing away from the backrest support frame 1; and a seat drawer 7 that is slidably fitted in the accommodation cavity and is adapted to be withdrawn and inserted from the opening. For the cooperation between the seat drawer 7 and the accommodation cavity here, reference can be made to any mature principle of the seat drawer 7 in the prior art, and this embodiment does not make an absolute limitation in this regard. That is, as long as it can enable the seat drawer 7 to facilitate the user to choose whether to pull out the seat drawer 7 according to needs by entering and exiting the seat cushion frame 62. It should be noted that the seat drawer 7 and the accommodation cavity here can directly slide and rub, or a guide rail structure can be additionally designed, and this embodiment does not make an absolute limitation in this regard either.

[0056] In summary, for the car seat of this embodiment, the rotation of the backrest frame relative to the backrest support frame 1 does not depend on the seat cushion frame 62, thus simplifying the overall assembly process of the car seat. In this way, when the backrest assembly needs to be replaced or the seat cushion assembly needs to be replaced, they can be replaced separately, improving the flexibility of use. At the same time, for the transportation process, the seat cushion assembly and the backrest assembly can also be transported in a separated state. When transported to the use scenario, the seat cushion assembly and the backrest assembly can be respectively assembled with the bottom support frame 54. In this way, compared with the large-volume transportation situation, this split transportation method can reduce the logistics cost.

[0057] The above specific embodiments have further detailed the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0058] In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 to the present invention.

[0059] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0061] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0062] In the present utility model, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being above, over and on the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

Claims

1. A seat back assembly, characterized in that: include: Seat back support frame; A chair back frame, comprising a frame plate for supporting the back of a human body and a headrest assembly detachably connected to the frame plate; the upper end of the frame plate along the seat height direction is rotatably matched with the chair back support frame; the headrest assembly comprises a headrest block, a support seat connected to the headrest block, and a driving structure fixed on the frame plate for driving the support seat to perform lifting movement along the seat height direction; The frame angle adjustment component comprises a movable rod rotatably connected to the lower end of the frame plate along the seat height direction, and a screw rod module connected to the movable rod for pushing and pulling the movable rod; the screw rod module is fixed on the seat back support frame.

2. The seat back assembly according to claim 1, characterized in that: The screw rod module comprises a first screw rod and a first screw nut used in conjunction with each other, and a driver for driving the first screw rod to operate; and The movable rod is recessed with a U-shaped receiving groove suitable for the first screw rod to be partially inserted; and the movable rod is connected to the first screw nut.

3. The seat back assembly according to claim 2, characterized in that: The screw rod module is fixed at the upper middle position of the chair back support frame along the seat height direction.

4. The seat back assembly according to any one of claims 1 to 3, characterized in that: The upper end portion of the frame plate along the seat height direction is rotatably matched with the seat back support frame through a pair of connecting ears.

5. The seat back assembly according to claim 1, characterized in that: The support seat includes a pair of parallel supporting columns fixedly connected to the headrest block, and a movable plate connected to the ends of the pair of supporting columns away from the headrest block; wherein Each support post extends along the height of the seat.

6. The seat back assembly according to claim 5, characterized in that: The driving structure includes a linear screw module connected to the movable plate; The linear screw module comprises a second nut connected to the movable plate, a second screw matched with the second nut, and a power part for driving the second screw to operate.

7. The seat back assembly according to claim 5 or 6, characterized in that: Two hollow sleeves extending in the height direction of the seat are fixedly provided on the frame plate; and A pair of support columns penetrates through the two hollow sleeves one by one.

8. A car seat, characterized in that: include: A bottom support frame, a seat cushion assembly disposed on the bottom support frame, and a seat back assembly as claimed in any one of claims 1 to 7 connected to the bottom support frame; The chair back support frame is vertically connected to the bottom support frame.

9. The vehicle seat according to claim 8, characterized in that: The seat cushion assembly comprises a seat cushion frame which is slidably connected with a bottom support frame through a slide rail module.

10. The vehicle seat according to claim 9, characterized in that The seat cushion frame has a hollow accommodating cavity, and an opening communicating with the accommodating cavity is provided on the side end surface of the seat cushion frame facing away from the seat back support frame; and A drawer suitable for being drawn out and inserted into the opening is slidably matched in the accommodating cavity.

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