Seat backrest framework with electric headrest and seat

Abstract

The utility model belongs to the technical field of automobile seats, and particularly relates to a seat backrest framework with an electric headrest and a seat, the seat backrest framework comprises a framework assembly, the framework assembly comprises an upper cross rod located on the upper portion and a lower cross rod located on the lower portion, and a guide sleeve is arranged on the upper cross rod; the headrest is arranged on the framework assembly in a lifting mode, the headrest comprises a guide rod, and the guide rod is inserted into the guide sleeve in a sliding mode; the lifting assembly comprises a guide rail, a sliding seat and a power piece, the guide rail is arranged in the extending direction of the guide rod, the upper end of the guide rail is fixed to the upper cross rod, the lower end of the guide rail is fixed to the lower cross rod, and the sliding seat is slidably connected to the guide rail; the power piece is arranged at the lower end of the guide rail and used for driving the sliding base to slide on the guide rail to drive the headrest to ascend and descend. The headrest is arranged on the framework assembly in a lifting mode, and lifting adjustment of the headrest is achieved under driving of the power piece. The whole structure is simple and compact, and the structural strength is good.

Description

Technical Field

[0001] This application belongs to the technical field of automotive seats, and particularly relates to a seat back frame and seat with an electric headrest. Background Technology

[0002] The headrest of a car seat is a crucial design element. Its functions include supporting the passenger's head to facilitate rest and relaxation, improving passenger comfort, and preventing head and neck injuries caused by inertia or severe impacts in the event of a collision. Currently, an increasing number of cars use power headrests.

[0003] Regarding the existing related technologies mentioned above, the inventors believe that the following technical defects exist: In order to position the electric seat headrest assembly at a predetermined location on the seat, the seat back frame structure is designed to be complex and cannot guarantee the stability of the electric headrest installation. This is especially problematic for cars where the seating space is already limited, thus failing to ensure passenger comfort. Therefore, the existing related technologies require further improvement. Utility Model Content

[0004] This application provides a seat back frame and seat with electric headrest to solve the technical problems existing in the prior art: the seat back frame structure is designed to be too complicated and cannot guarantee the installation stability of the electric headrest, especially for cars where the seat space is already small, thus failing to guarantee the passenger's riding comfort.

[0005] In a first aspect, embodiments of this application provide a seat back frame with an electric headrest, comprising:

[0006] A frame assembly, the frame assembly including an upper crossbar located at the top and a lower crossbar located at the bottom, the upper crossbar being provided with a guide sleeve;

[0007] A headrest, which is height-adjustable and mounted on the frame assembly, includes a guide rod slidably inserted into the guide sleeve; and

[0008] The lifting assembly includes a guide rail, a slide block, and a power component. The guide rail is arranged along the extension direction of the guide rod. The upper end of the guide rail is fixed to the upper crossbar, and the lower end of the guide rail is fixed to the lower crossbar. The slide block is slidably connected to the guide rail, and the end of the guide rod is connected to the slide block. The power component is located at the lower end of the guide rail and is used to drive the slide block to slide on the guide rail to move the headrest up and down.

[0009] Optionally, the power component includes a lead screw and a lifting motor. The lead screw is rotatably mounted on the guide rail along the extension direction of the guide rod. The lead screw passes through the slide block, and the slide block is threadedly connected to the lead screw. The lifting motor is located at the lower end of the guide rail to drive the lead screw to rotate.

[0010] Optionally, the slide includes fixed sleeves on both sides, the guide rod is inserted into the fixed sleeve, and the fixed sleeve is provided with a clamping element for fixing the guide rod.

[0011] Optionally, the fixed sleeve is provided with a groove on its periphery, and the clamping member includes a retaining spring located in the groove. When the guide rod is inserted into the fixed sleeve, the retaining spring is clamped on the periphery of the guide rod.

[0012] Optionally, the lower end of the guide rail is integrally formed with a fixed bracket, and the lifting motor is mounted on the fixed bracket.

[0013] Optionally, the guide rail is provided with a limiting part for limiting the slide block, the limiting part including an upper limiting piece located on the upper part of the guide rail and a lower limiting piece located on the lower part of the guide rail.

[0014] Optionally, the guide rail is a sheet metal stamping part, and the fixing bracket is integrally stamped with the guide rail.

[0015] Optionally, the frame assembly includes a pivot shaft, which is rotatably mounted on the side plate of the seat cushion assembly, and an angle adjustment motor for driving the pivot shaft to rotate is provided at the lower part of the frame assembly.

[0016] Optionally, the frame assembly is provided with foamed support wires, the foamed support wires including a first wire disposed on one side of the angle adjustment motor.

[0017] Secondly, embodiments of this application provide a seat, including a seat back frame with an electric headrest as described above.

[0018] In this embodiment, under the combined action of the frame assembly and the lifting component, the headrest is height-adjustable and positioned at a predetermined position on the frame assembly via guide sleeves, guide rails, and slide blocks. The headrest's height adjustment is achieved under the drive of a power component. The overall structure is simple and compact, possessing good structural strength, and the headrest's lifting movement is smooth and reliable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0021] Figure 1 This is a schematic diagram of the structure of a seat back frame with an electric headrest in an embodiment of this application.

[0022] Figure 2 for Figure 1 An exploded view of a portion of the frame structure of a seat backrest with an electric headrest.

[0023] Figure 3 This is a schematic diagram of the lifting component in the embodiments of this application.

[0024] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0025] Figure 5 This is a schematic diagram of the guide rail provided in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Frame assembly; 110. Upper crossbar; 120. Lower crossbar; 130. Guide sleeve; 140. Vertical connecting rod;

[0028] 200. Headrest; 201. Pillow body; 202. Guide rod; 210. Side pillow; 220. Center pillow;

[0029] 300. Lifting assembly; 310. Guide rail; 311. Limiting part; 3111. Lower limit plate; 3112. Upper limit plate; 312. Fixed bracket; 320. Lead screw; 330. Slide block; 331. Fixed sleeve; 332. Slot; 333. Snap ring; 340. Lifting motor;

[0030] 400, Foamed support wire; 410, First wire; 420, Second wire; 430, Third wire; 440, Fourth wire;

[0031] 5. Side plate; 6. Rotating shaft; 7. Angle adjustment motor. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] This application provides a seat back frame and seat with an electric headrest to solve the technical problems existing in the prior art: the seat back frame structure is too complex and cannot guarantee the installation stability of the electric headrest, especially for cars where the seating space is already small, thus failing to guarantee passenger comfort. The following description will be provided in conjunction with the accompanying drawings.

[0034] In a first aspect, embodiments of this application provide a seat back frame with an electric headrest. (Refer to...) Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a seat back frame with an electric headrest according to an embodiment of this application. Figure 2 for Figure 1 An exploded view of a partial structure of a seat back frame with an electric headrest. An embodiment of this application provides a seat back frame with an electric headrest 200, comprising a frame assembly 100, a headrest 200, and a lifting assembly 300.

[0035] The frame assembly 100 includes an upper crossbar 110 at the top, a lower crossbar 120 at the bottom, and a vertical connecting rod 140 connecting the upper crossbar 110 and the lower crossbar 120. The upper crossbar 110, the lower crossbar 120, and the vertical connecting rod 140 are welded to form a frame structure. A guide sleeve 130 for setting the headrest 200 is fixedly installed on the upper crossbar 110. The guide sleeve 130 can be a commonly used automotive headrest guide sleeve in the art. The headrest 200 may include a side pillow 210 located on the side and a center pillow 220 located in the middle. The headrest 200 can be raised and lowered on the frame assembly 100. Specifically, the headrest 200 is composed of a pillow body 201 and a guide rod 202. The guide rod 202 is located at the bottom of the pillow body 201 and can be slidably inserted into the guide sleeve 130. The lifting assembly includes a guide rail 310, a slide block 330, and a power component. The guide rail 310 is arranged along the extension direction of the guide rod 202. The upper end of the guide rail 310 is fixed to the upper crossbar 110, and the lower end of the guide rail 310 is fixed to the lower crossbar 120. The slide block 330 is slidably connected to the guide rail 310, and the end of the guide rod 202 is connected to the slide block 330. The power component is located at the lower end of the guide rail 310 and is used to drive the slide block 330 to slide on the guide rail 310 to drive the headrest 200 to rise and fall.

[0036] Using the above technical solution, under the combined action of the frame assembly 100 and the lifting component 300, the headrest 200 is height-adjustably positioned on the frame assembly 100 via the guide sleeve 130, guide rail 310, and slide block 330. Driven by the power component, the headrest 200 can be adjusted in height. The overall structure is simple and compact, possessing good structural strength, and the headrest 200's lifting movement is smooth, exhibiting high operational reliability.

[0037] Reference Figures 3 to 5 , Figure 3 This is a schematic diagram of the lifting assembly in an embodiment of this application. Figure 4 for Figure 3 Enlarged view of part A in the middle. Figure 5 This is a schematic diagram of the guide rail provided in an embodiment of this application.

[0038] In this embodiment, the guide rail 310 can be made of sheet metal stamping. The guide rail 310 is vertically mounted on the frame assembly 100, and its upper and lower ends can be fixed to the upper crossbar 110 and lower crossbar 120 respectively by bolts. The power components may include a lead screw 320 and a lifting motor 340. The lead screw 320 is rotatably mounted on the guide rail 310 along the extension direction of the guide rod 202. The lead screw 320 passes through a slide block 330, and the slide block 330 is threadedly connected to the lead screw 320. The lifting motor 340 is located at the lower end of the guide rail 310 to drive the lead screw 320 to rotate. Specifically, the slide block 330 has a threaded hole that mates with the lead screw 320, and the lead screw 320's thread passes through the threaded hole inside the slide block 330 to achieve a threaded connection. The slide block 330 can be made of plastic. Both sides of the slide block 330 extend outwards to form fixing sleeves 331. The lower end of the guide rod 202 is inserted into the fixing sleeve 331, which contains a clamping element for fixing the guide rod 202. Specifically, an annular groove 332 is formed through the periphery of the fixing sleeve 331. The clamping element includes an annular retaining spring 333 located within the groove 332. When the guide rod 202 is inserted into the fixing sleeve 331, the retaining spring 333 retracts and clamps onto the periphery of the guide rod 202, achieving rapid locking between the guide rod 202 and the slide block 330. A fixing bracket 312 is integrally formed at the lower end of the guide rail 310. Specifically, the fixing bracket 312 is a U-shaped groove integrally stamped with the guide rail 310. The lifting motor 340 is mounted on the fixing bracket 312. The overall structure is simple and stable, facilitating manufacturing.

[0039] Furthermore, in some embodiments, the guide rail 310 is provided with a limiting part 311 for limiting the slide 330. Specifically, the limiting part 311 includes an upper limiting piece 3112 located on the upper part of the guide rail 310 and a lower limiting piece 3111 located on the lower part of the guide rail 310, wherein both the upper limiting piece 3112 and the lower limiting piece 3111 can be formed by bending the structure of the guide rail 310 itself. When the slide 330 slides to a predetermined position at the top or bottom of the guide rail 310, the upper limiting piece 3112 or the lower limiting piece 3111 contacts the slide 330, thereby limiting the stroke of the slide 330, which can effectively prevent the headrest 200 from falling off due to excessive lifting and lowering of the slide 330, and helps to ensure the working reliability of the overall structure.

[0040] Furthermore, in some embodiments, the frame assembly 100 also includes a horizontally arranged pivot 6. The lower part of the frame assembly 100 is rotatably connected to the side plate 5 of the seat cushion assembly via the pivot 6. An angle adjustment motor 7 is arranged at the middle position of the lower part of the frame assembly 100. The angle adjustment motor 7 is used to drive the frame assembly 100 to rotate around the pivot 6 to adjust the backrest angle. Positioning the angle adjustment motor 7 at the middle position of the lower part of the frame assembly 100 can better avoid the angle adjustment motor 7 being too close to the passenger's back, thus preventing any impact on seating comfort.

[0041] In some embodiments, the frame assembly 100 is provided with foam support wires 400, including a first wire 410 provided on one side of the angle adjustment motor 7. By providing the first wire 410, the foam support can be increased to ensure the structural stability of the seat back. On the other hand, it can also prevent the seat back from leaning against the backrest, which would affect the normal operation of the angle adjustment motor 7.

[0042] Furthermore, the foamed support wire 400 also includes a second wire 420 disposed around the pivot 6. By providing the second wire 420, the operation of the pivot 6 can be effectively prevented from being affected by the backrest being squeezed by the passenger when sitting.

[0043] Furthermore, the foam support wire 400 also includes a third wire 430 located near the rotatable connection between the side plate 5 and the rotating shaft 6. By providing the third wire 430, the deformation of the foam structure due to compression can be effectively avoided.

[0044] Furthermore, the foam support wire 400 also includes a fourth wire 440 disposed on the upper part of the frame assembly 100. By disposing of the fourth wire 440, the upper part of the backrest is supported by the foam, ensuring that the seat backrest has a good shape.

[0045] Among them, the first steel wire 410, the second steel wire 420, the third steel wire 430 and the fourth steel wire 440 can all be set at predetermined positions on the frame assembly 100 by welding, which optimizes the force distribution of the backrest and helps to improve the support stability of the backrest.

[0046] The working principle of a seat back frame with an electric headrest according to an embodiment of this application is roughly as follows: The passenger starts the lifting motor 340 by controlling the switch, which drives the lead screw 320 to rotate. The slide 330 slides up and down along the guide rail 310 under the thread drive of the lead screw 320, thereby driving the headrest 200 to rise and fall synchronously. At the same time, the backrest angle is adjusted by the angle adjustment motor 7 to adjust the headrest 200 to a suitable position for the passenger. The overall structure is simple and ingenious, and easy to operate.

[0047] Secondly, this application provides a seat, including the seat back frame with electric headrest shown in the above embodiment. Other structures (such as seat cushions) can be implemented using related technologies commonly used in the field, and will not be described in detail here.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0049] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

[0050] The foregoing has provided a detailed description of a seat back frame and seat with an electric headrest provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A seat back frame with an electric headrest, characterized by, include: A frame assembly, the frame assembly including an upper crossbar located at the top and a lower crossbar located at the bottom, the upper crossbar being provided with a guide sleeve; A headrest, which is height-adjustable and mounted on the frame assembly, includes a guide rod slidably inserted into the guide sleeve; and The lifting assembly includes a guide rail, a slide block, and a power component. The guide rail is arranged along the extension direction of the guide rod. The upper end of the guide rail is fixed to the upper crossbar, and the lower end of the guide rail is fixed to the lower crossbar. The slide block is slidably connected to the guide rail, and the end of the guide rod is connected to the slide block. The power component is located at the lower end of the guide rail and is used to drive the slide block to slide on the guide rail to move the headrest up and down.

2. The seat back frame with an electric headrest according to claim 1, wherein The power component includes a lead screw and a lifting motor. The lead screw is rotatably mounted on the guide rail along the extension direction of the guide rod. The lead screw passes through the slide block, and the slide block is threadedly connected to the lead screw. The lifting motor is located at the lower end of the guide rail to drive the lead screw to rotate.

3. The seat back frame with an electric headrest according to claim 2, characterized in that, The slide includes fixed sleeves on both sides, the guide rod is inserted into the fixed sleeve, and the fixed sleeve is provided with a clamping element for fixing the guide rod.

4. The seat back frame with an electric headrest according to claim 3, characterized in that, The fixed sleeve has a groove on its periphery, and the clamping member includes a retaining spring located in the groove. When the guide rod is inserted into the fixed sleeve, the retaining spring is clamped on the periphery of the guide rod.

5. The seat back frame with an electric headrest according to claim 2, wherein The lower end of the guide rail is integrally formed with a fixed bracket, and the lifting motor is mounted on the fixed bracket.

6. The seat back frame with an electric headrest according to claim 5, wherein The guide rail is provided with a limiting part for limiting the slide block. The limiting part includes an upper limiting piece located on the upper part of the guide rail and a lower limiting piece located on the lower part of the guide rail.

7. The seat back frame with an electric headrest according to claim 6, wherein The guide rail is a sheet metal stamping part, and the fixed bracket is integrally stamped with the guide rail.

8. The seat back frame with an electric headrest according to claim 1, wherein The frame assembly includes a pivot shaft, which is rotatably mounted on the side plate of the seat cushion assembly. An angle adjustment motor for driving the pivot shaft to rotate is provided at the lower part of the frame assembly.

9. The seat back frame with an electric headrest according to claim 8, wherein The frame assembly is provided with foamed support steel wires, and the foamed support steel wires include a first steel wire disposed on one side of the angle adjustment motor.

10. A seat, characterized by Including a seat back frame with an electric headrest as described in any one of claims 1 to 9.

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