Backrest adjustment device and seat

Abstract

The present invention provides a seat back adjustment device and a seat, relating to the technical field of seats. The seat back adjustment device provided by the present invention comprises: a support assembly and an angle adjustment assembly; the support assembly is disposed within and extends along the seat back; the angle adjustment assembly is used to drive the support assembly to move within the seat back to adjust the seat backrest angle. The seat back adjustment device provided by the present invention can enhance the structural strength of the seat back and, by driving the seat back to adjust the backrest angle through the support assembly, can enhance the stability of the seat back at any angle.

Description

Technical Field

[0001] The present invention relates to the technical field of seats, and in particular to a seat back adjustment device and a seat. Background Art

[0002] Adjusting the seatback's recline angle can meet passenger comfort requirements. However, the variable recline angle makes it difficult to install a reinforcement beam inside the seatback. Consequently, the seatback cannot provide stable support at any recline angle, compromising its structural strength and recline stability. Summary of the Invention

[0003] The object of the present invention is to provide a seat back adjustment device and a seat, which can enhance the structural strength and inclination stability of the seat back.

[0004] In a first aspect, the present invention provides a chair back adjustment device comprising: a support assembly and an angle adjustment assembly;

[0005] The support assembly is disposed inside the seat back and extends along the seat back;

[0006] The angle adjustment assembly is used to drive the support assembly to move within the seat back so as to adjust the backrest inclination angle of the seat back.

[0007] In combination with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the seat back comprises: a base body and a leaning body connected to the base body;

[0008] The support assembly and the angle adjustment assembly are respectively connected to the base body in a cooperative manner, and the support assembly abuts against the leaning body to adjust the inclination angle of the backrest.

[0009] In combination with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the base is provided with a guide portion, and the support assembly is slidably connected to the guide portion.

[0010] In combination with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the support assembly includes: a reinforcement member, a first sliding member, and a second sliding member;

[0011] The first sliding member and the second sliding member are spaced apart and are respectively connected to the reinforcing member;

[0012] The guide portion includes a first sliding groove and a second sliding groove, the first sliding member is slidably connected in the first sliding groove, and the second sliding member is slidably connected in the second sliding groove.

[0013] In combination with the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the reinforcement member includes an arcuate segment, and the arcuate segment is bent in a direction away from the leaning body.

[0014] In combination with the third possible implementation of the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein an extension direction of the first chute and an extension direction of the second chute have an angle.

[0015] In combination with the third possible implementation manner of the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the angle adjustment assembly includes: a movable member and a driving member connected to the movable member;

[0016] The movable member is connected to the reinforcing member, and the driving member is connected to the base.

[0017] In combination with the sixth possible implementation of the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein the movable part includes a push-pull part, the driving part passes through the push-pull part, and is threadedly engaged with the push-pull part.

[0018] In combination with the seventh possible implementation manner of the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the push-pull portion is connected to the sliding shaft portion;

[0019] The reinforcement is provided with a third sliding groove, and the sliding shaft portion is inserted into the third sliding groove.

[0020] In combination with the eighth possible implementation of the first aspect, the present invention provides a ninth possible implementation of the first aspect, wherein the extension direction of the third sliding groove and the driving direction of the driving member form an angle.

[0021] In a second aspect, the present invention provides a seat provided with the seat back adjustment device provided in the first aspect.

[0022] The embodiments of the present invention bring the following beneficial effects: a support component is arranged inside the seat back and extends along the seat back, and the support component is driven by the angle adjustment component to adjust the backrest inclination angle of the seat back. The support component can enhance the structural strength of the seat back, and the seat back is driven by the support component to adjust the backrest inclination angle, which can enhance the stability of the seat back at any inclination state.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically listed below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 An exploded view of a seat back adjustment device and a seat back provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of a seat provided in an embodiment of the present invention;

[0027] Figure 3 Schematic diagram of a seat back adjustment device provided in an embodiment of the present invention Figure 1 ;

[0028] Figure 4 Schematic diagram of a seat back adjustment device provided in an embodiment of the present invention Figure 2 ;

[0029] Figure 5 A cross-sectional view of a seat provided in a first state according to an embodiment of the present invention;

[0030] Figure 6 A cross-sectional view of a seat provided in a second state according to an embodiment of the present invention.

[0031] Icons: 100-support assembly; 101-first slide groove; 102-second slide groove; 110-reinforcement member; 111-third slide groove; 120-first sliding member; 130-second sliding member; 200-angle adjustment assembly; 210-movable member; 211-push-pull part; 212-sliding shaft part; 220-driving member; 300-seat backrest; 310-base; 320-leaning body. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0035] Implementation Method 1

[0036] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the seat back adjustment device provided by the embodiment of the present invention includes: a support component 100 and an angle adjustment component 200; the support component 100 is arranged inside the seat back 300 and extends along the seat back 300; the angle adjustment component 200 is used to drive the support component 100 to move inside the seat back 300 to adjust the backrest angle of the seat back 300.

[0037] It should be noted that the angle adjustment assembly 200 drives the support assembly 100 to move within the seat back 300, thereby changing the support angle of the support assembly 100 and adjusting the backrest inclination angle of the seat back 300. Furthermore, the support assembly 100 is located within the seat back 300, providing support and reinforcement for the seat back 300 and improving the structural strength of the seat back 300.

[0038] In an embodiment of the present invention, the seat back 300 includes: a base 310 and a leaning body 320 connected to the base 310; the support component 100 and the angle adjustment component 200 are respectively connected to the base 310, and the support component 100 abuts against the leaning body 320 to adjust the backrest inclination angle.

[0039] Specifically, the base 310 is fixed, and the support assembly 100 supports the leaning body 320. The backrest angle is adjusted by changing the angle between the leaning body 320 and the plumb line. The base 310 can be configured as a seat shell, and the leaning body 320 includes elastic padding. The occupant leans against the leaning body 320, which is supported by the support assembly 100 at a certain angle. The angle adjustment assembly 200 drives the support assembly 100 to adjust the angle between the leaning body 320 and the plumb line, thereby achieving a backrest angle that is comfortable for the occupant.

[0040] Furthermore, the base 310 is provided with a guide portion, and the support assembly 100 is slidably connected to the guide portion.

[0041] In some embodiments, the guide portion includes a slide groove that is inclined upwardly, away from the reclining body 320. When the support assembly 100 slides upwardly along the guide portion within the seat back 300, the support assembly 100 tilts away from the reclining body 320, thereby increasing the angle between the reclining body 320 and the vertical axis, thereby facilitating a near-supine position for the occupant. Conversely, when the support assembly 100 slides downwardly along the guide portion within the seat back 300, the support assembly 100 pushes against the reclining body 320, reducing the angle between the reclining body 320 and the vertical axis, thereby adjusting the reclining body 320 to a vertical position.

[0042] like Figure 5 and Figure 6 As shown, in this embodiment, the seat back 300 has a first state and a second state. As the support assembly 100 slides along the guide portion, the seat back 300 switches between the first and second states. In the first state, the support assembly 100 pushes against the reclining body 320, placing the reclining body 320 in an upright position. In the second state, the support assembly 100 tilts away from the reclining body 320, and the reclining body 320 transitions to a reclined position due to elastic force or pressure from the passenger's back.

[0043] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the support assembly 100 includes: a reinforcement 110, a first sliding member 120 and a second sliding member 130; the first sliding member 120 and the second sliding member 130 are arranged at intervals and are respectively connected to the reinforcement 110; the guide portion includes: a first sliding groove 101 and a second sliding groove 102, the first sliding member 120 is slidably connected in the first sliding groove 101, and the second sliding member 130 is slidably connected in the second sliding groove 102.

[0044] Specifically, the reinforcement 110 extends from the interior of the seat back 300 to the seat bottom; the first sliding member 120 is located within the seat back 300 and connected to the reinforcement 110; and the second sliding member 130 is located at the seat bottom and connected to the reinforcement 110. The first slide 101 is inclined from bottom to top, away from the reclining body 320. The extension directions of the first and second slides 101, 102 respectively approach the extension direction of the reinforcement 110, ensuring smooth movement of the reinforcement 110 within the seat back 300. The angle adjustment assembly 200 is connected to the base 310. Adjusting the angle adjustment assembly 200 pushes and pulls the support assembly 100, causing the first slide 120 to slide along the first slide 101 and the second slide 130 to slide along the second slide 102. When the angle adjustment assembly 200 pushes the support assembly 100, causing the second slider 130 to slide along the second slot 102, and the first slider 120 to slide upward along the first slot 101, the leaning body 320 can tilt backward due to the elastic force or the pressure of the passenger's back. When the angle adjustment assembly 200 pulls the support assembly 100, causing the second slider 130 to slide along the second slot 102, and the first slider 120 to slide downward along the first slot 101, the reinforcement member 110 pushes against the leaning body 320, thereby reducing the angle between the leaning body 320 and the plumb bob.

[0045] Furthermore, the reinforcement 110 includes an arcuate segment that curves away from the reclining body 320. The reinforcement 110 has an arcuate segment that extends along an arc and curves away from the reclining body 320. This allows the reinforcement 110 to conform to the shape of the seat and extend from the seat back to the seat bottom.

[0046] Furthermore, an extending direction of the first sliding groove 101 and an extending direction of the second sliding groove 102 form an included angle.

[0047] Specifically, the second slide 102 extends from front to back relative to the seat. The second slide 102 can extend along an arc curve and is recessed downward, allowing the reinforcement 110 to slide more smoothly when used with the arc-shaped reinforcement 110. The first slide 101 is provided on the back of the seat and is inclined toward the rear of the seat from bottom to top. The extension direction of the first slide 101 and the extension direction of the second slide 102 form an angle. When the second sliding member 130 slides along the second slide 102 and the first sliding member 120 slides along the first slide 101, the first and second slides 101 and 102 jointly guide the support assembly 100, thereby changing the support angle of the support assembly 100 on the leaning body 320 and adjusting the backrest inclination.

[0048] Furthermore, the angle adjustment assembly 200 includes: a movable member 210 and a driving member 220 connected to the movable member 210 ; the movable member 210 is connected to the reinforcement member 110 , and the driving member 220 is connected to the base 310 .

[0049] In some embodiments, the angle adjustment assembly 200 may use an electric push rod, the movable part 210 is configured as the movable end of the electric push rod, and the driving part 220 is configured as the driving motor of the electric push rod. The support assembly 100 can be pushed and pulled by the extension and retraction of the electric push rod, thereby adjusting the backrest inclination angle.

[0050] In this embodiment, the movable member 210 includes a push-pull portion 211 , and the driving member 220 passes through the push-pull portion 211 and is engaged with the push-pull portion 211 through threads.

[0051] Specifically, two reinforcement members 110 are provided, spaced apart from each other. A first sliding member 120 and a second sliding member 130 are connected between the two reinforcement members 110, respectively. The ends of the first sliding member 120 pass through the two reinforcement members 110, and the ends of the second sliding member 130 pass through the two reinforcement members 110. The two ends of the first sliding member 120 correspond to the two first chutes 101, and the two ends of the second sliding member 130 correspond to the two second chutes 102. The push-pull portion 211 extends perpendicular to the direction of extension of the driving member 220 and is connected between the two reinforcement members 110. The driving member 220 is connected to the base 310 or the seat base. The rotation of the driving member 220 drives the push-pull portion 211, which in turn drives the support assembly 100 to move.

[0052] Furthermore, the push-pull portion 211 is connected to the sliding shaft portion 212 ; the reinforcement member 110 is provided with a third sliding groove 111 , and the sliding shaft portion 212 is inserted into the third sliding groove 111 .

[0053] Specifically, when the first sliding member 120 slides along the first sliding groove 101 and the second sliding member 130 slides along the second sliding groove 102 , the sliding shaft portion 212 abuts against the inner side wall of the third sliding groove 111 , thereby pushing and pulling the reinforcement member 110 to move.

[0054] Furthermore, the extension direction of the third sliding groove 111 forms an angle with the driving direction of the driving member 220. The reinforcement member 110 slides along the arc-shaped curve, the first sliding member 120 slides along the first sliding groove 101, and the second sliding member 130 slides along the second sliding groove 102. As the reinforcement member 110 swings during movement, the sliding shaft portion 212 slides along the third sliding groove 111, ensuring smooth swinging of the reinforcement member 110. The swinging of the reinforcement member 110 allows the tilt angle of the leaning body 320 to be adjusted.

[0055] Implementation Method 2

[0056] like Figure 1、 Figure 2 、 Figure 5 and Figure 6 As shown, the seat provided in the embodiment of the present invention is provided with the seat back adjustment device provided in embodiment 1. The seat includes a child seat or an adult seat and is suitable for vehicle installation. The seat has the same technical effect as the seat back adjustment device, so it will not be described in detail here.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chair back adjustment device, characterized in that: include: A support assembly (100) and an angle adjustment assembly (200); The support assembly (100) is disposed inside the seat back (300) and extends along the seat back (300); The angle adjustment assembly (200) is used to drive the support assembly (100) to move within the seat back (300) to adjust the backrest inclination angle of the seat back (300); The seat backrest (300) comprises: a base (310) and a leaning body (320) connected to the base (310); the support assembly (100) and the angle adjustment assembly (200) are respectively connected to the base (310), and the support assembly (100) abuts against the leaning body (320) to adjust the backrest inclination angle; The base (310) is provided with a guide portion, and the support assembly (100) is slidably connected to the guide portion; The support assembly (100) includes: a reinforcement member (110), a first sliding member (120) and a second sliding member (130); the first sliding member (120) and the second sliding member (130) are arranged at intervals and are respectively connected to the reinforcement member (110); the guide portion includes: a first sliding groove (101) and a second sliding groove (102); the first sliding member (120) is slidably connected in the first sliding groove (101), and the second sliding member (130) is slidably connected in the second sliding groove (102); The angle adjustment assembly (200) comprises: a movable member (210) and a driving member (220) connected to the movable member (210); the movable member (210) is connected to the reinforcement member (110), and the driving member (220) is connected to the base (310); The movable member (210) includes a push-pull portion (211), and the driving member (220) passes through the push-pull portion (211) and is engaged with the push-pull portion (211) via a thread. The push-pull portion (211) is connected to the sliding shaft portion (212); the reinforcement member (110) is provided with a third sliding groove (111), and the sliding shaft portion (212) is inserted into the third sliding groove (111).

2. The seat back adjustment device according to claim 1, characterized in that: The reinforcement member (110) includes an arcuate segment, and the arcuate segment is bent in a direction away from the leaning body (320).

3. The seat back adjustment device according to claim 1, characterized in that: An extending direction of the first sliding groove (101) and an extending direction of the second sliding groove (102) form an included angle.

4. The seat back adjustment device according to claim 1, characterized in that: An extending direction of the third sliding groove and a driving direction of the driving member (220) form an included angle.

5. A seat, characterized in that: The seat is provided with the seat back adjustment device according to any one of claims 1 to 4.

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