A shoulder adjustment mechanism and seat for a three-row fixed zero-gravity seat

Abstract

A shoulder adjustment mechanism and seat for a three-row fixed zero-gravity seat are disclosed. The shoulder adjustment mechanism includes a shoulder adjustment frame rotatably mounted in front of the backrest frame, a shoulder adjustment motor mounted on the backrest frame, a plate-type adjustment component disposed at the upper end of the backrest frame perpendicular to the backrest frame and capable of lateral movement relative to the backrest frame, and a shoulder adjustment push bracket connected at one end to the shoulder adjustment frame and the other end passing through the plate-type adjustment component and connected to the backrest frame. The upper end of the backrest frame has a bearing auxiliary adjustment part positioned opposite the plate-type adjustment component, and the bearing auxiliary adjustment part has an elongated groove perpendicular to the backrest frame. The plate-type adjustment component has an oblique elongated groove. A synchronous moving shaft on the shoulder adjustment push bracket passes through the oblique elongated groove and the elongated groove in sequence, and is locked at its rear end. This independent shoulder adjustment mechanism allows for a fixed overall backrest angle while partially raising the shoulder area, improving comfort.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seats, specifically relating to a shoulder adjustment mechanism and seat for a three-row fixed zero-gravity seat. Background Technology

[0002] The comfort of car seats directly affects the comfort of drivers and passengers. People's demands for car seat comfort are also increasing. Existing car seats have adjustable shoulder supports on their backrests, allowing drivers and passengers to adjust the angle of the shoulder support relative to the backrest as needed. However, existing shoulder supports are mainly installed as part of the backrest via a pivot on the backrest body, essentially dividing the backrest into two independent parts, with the upper part used as the shoulder support (i.e., the backrest includes the backrest body and the shoulder support). Examples include Chinese patents CN 207496510 U ("Car Seat Shoulder Angle Adjustment Mechanism"), CN 218085183 U ("A Shoulder Adjustment Mechanism for a Vehicle Seat, Seat and Vehicle"), CN 221393151 U ("A Transmission Mechanism for Shoulder Support Adjustment and Car Seat"), and CN222157237 U ("A Drive Mechanism for Shoulder Support and Car Seat"). This type of shoulder support structure has the following disadvantages: (1) The backrest has low strength, and there is a risk of the backrest folding and squeezing the back of the human body when a collision or strong impact occurs; (2) The appearance is not beautiful, and the plastic trim on the back of the seat is a separate part, which is affected when adjusting; (3) The upper part of the backrest frame is involved in the adjustment, which affects the expansion of the table function. Summary of the Invention

[0003] In view of the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a shoulder adjustment mechanism for a three-row fixed zero-gravity seat. By modifying the backrest side panel, the shoulder area can be adjusted independently, that is, the shoulder adjustment mechanism is an independent mechanism. This design eliminates the risk of the backrest folding and squeezing the back of the human body in the event of a collision or a strong impact, and can provide passengers with better shoulder and back support. Moreover, after the three-row seats are unfolded in place with the zero-gravity function, passengers can lie down comfortably. Combined with the shoulder adjustment, comfort is improved.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A shoulder adjustment mechanism for a three-row fixed zero-gravity seat includes a shoulder adjustment frame rotatably mounted in front of a backrest frame, a shoulder adjustment motor mounted on the backrest frame, a plate-type adjustment component disposed at the upper end of the backrest frame perpendicular to the backrest frame and capable of lateral movement relative to the backrest frame, and a shoulder adjustment push bracket connected at one end to the shoulder adjustment frame and the other end passing through the plate-type adjustment component and connected to the backrest frame. The upper end of the backrest frame has a bearing auxiliary adjustment section positioned opposite the plate-type adjustment component, and the bearing auxiliary adjustment section has an elongated groove perpendicular to the backrest frame. The plate-type adjustment component has an oblique elongated groove. The synchronous moving shaft on the shoulder adjustment push bracket passes sequentially through the oblique elongated groove of the plate-type adjustment component and the rear end of the elongated groove of the bearing auxiliary adjustment component, and is locked and fixed.

[0006] As a preferred embodiment of this utility model, the upper end of the backrest frame is provided with a limiting groove at the position where the plate-type adjustment component is installed. One side of the plate-type adjustment component is disposed in the limiting groove, and the plate-type adjustment component is restricted from rotating by the limiting groove, so that it can only move back and forth laterally along the backrest frame under the drive of the shoulder adjustment motor.

[0007] As a preferred embodiment of this utility model, the lower end of the shoulder adjustment frame is mounted in front of the backrest frame via a lower pivot, allowing for angle adjustment relative to the backrest frame, while the upper end of the shoulder adjustment frame is connected to the shoulder adjustment push bracket via an upper pivot.

[0008] As a preferred embodiment of this utility model, the upper end of the shoulder adjustment frame is provided with an avoidance notch at a position opposite to the bearing auxiliary adjustment part, and a pad is provided between the shoulder adjustment frame and the backrest frame. The pad is a hollow structure and is set on the shoulder adjustment frame and close to the avoidance notch, so that when the shoulder adjustment frame is in the initial state, the bearing auxiliary adjustment part does not protrude outward from the shoulder adjustment frame.

[0009] As a preferred embodiment of this utility model, the shoulder adjustment motor is a lead screw motor, which is located near the upper end of the backrest frame; the plate-type adjustment component has an adjustment slider at one end near the lead screw motor, the adjustment slider is threadedly connected to the lead screw of the lead screw motor, and the other end of the plate-type adjustment component has two parallel oblique grooves.

[0010] As a preferred embodiment of this utility model, the backrest frame is provided with a bearing auxiliary adjustment part that matches the shape of the shoulder adjustment push bracket at a position close to the limiting groove, and the bearing auxiliary adjustment part is located near the middle of the limiting groove.

[0011] As a preferred embodiment of this utility model, the shoulder adjustment push bracket is set at the clearance opening of the shoulder adjustment frame, with the two side walls at one end connected to the shoulder adjustment frame via an upper rotating shaft, and the other end having a synchronous moving shaft at a position opposite to the long sliding groove.

[0012] As a preferred embodiment of this utility model, the bearing auxiliary adjustment part is provided with two parallel elongated slide grooves, which are arranged opposite to the two parallel oblique slide grooves on the plate-type adjustment component and the two synchronous moving shafts on the shoulder adjustment push bracket.

[0013] This embodiment also provides a seat, on which the shoulder adjustment mechanism described above is installed.

[0014] As a preferred embodiment of this invention, the seat is a zero-gravity seat.

[0015] Advantages and beneficial effects of this utility model:

[0016] (1) The shoulder adjustment mechanism provided by this utility model is independent, with a simple overall structure and convenient adjustment. It can keep the overall angle of the seat back unchanged and raise the shoulder position locally to improve comfort. This design improves the strength of the backrest and eliminates the risk of the backrest folding and squeezing the human back when a collision or strong impact occurs.

[0017] (2) The seat provided by this utility model has a beautiful appearance. The plastic trim panel behind the seat back is an integral piece, and the plastic trim panel is not affected when it is adjusted.

[0018] (3) The upper part of the seat back frame provided by this utility model does not participate in the adjustment and does not affect the function expansion of the table. Attached Figure Description

[0019] Figure 1 A schematic diagram of the initial state of the shoulder adjustment mechanism provided by this utility model;

[0020] Figure 2 A schematic diagram illustrating the adjustment process of the shoulder adjustment mechanism provided by this utility model;

[0021] Figure 3 A schematic diagram of the limit state of the shoulder adjustment mechanism provided by this utility model;

[0022] Figure 4 An exploded view of the shoulder adjustment mechanism provided by this utility model;

[0023] Figure 5 This is a schematic diagram of the assembly of the synchronous moving shaft with the long strip slide and the inclined long slide of this utility model.

[0024] Reference numerals in the attached drawings: 1. Backrest frame; 2. Shoulder adjustment frame; 3. Shoulder adjustment motor; 4. Plate-type adjustment component; 5. Shoulder adjustment push bracket; 6. Lower rotating shaft; 7. Upper rotating shaft; 8. Pad; 11. Limiting groove; 12. Bearing auxiliary adjustment part; 121. Long strip slide; 41. Inclined long slide; 42. Adjusting slider; 51. Synchronous moving shaft. Detailed Implementation

[0025] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] like Figures 1 to 5 As shown, this embodiment provides a shoulder adjustment mechanism for a three-row fixed zero-gravity seat, including a shoulder adjustment frame 2 rotatably mounted in front of the backrest frame 1, a shoulder adjustment motor 3 mounted on the backrest frame, a plate-type adjustment member 4 disposed on the upper end of the backrest frame 1 along a direction perpendicular to the backrest frame 1 and capable of lateral movement relative to the backrest frame 1, and a shoulder adjustment push bracket 5 connected to the backrest frame 1 at one end rotatably connected to the shoulder adjustment frame 2 and the other end passing through the plate-type adjustment member 4; wherein, the upper end of the backrest frame 1 is provided with a bearing auxiliary adjustment part 12 at a position opposite to the plate-type adjustment member 4, and the bearing auxiliary adjustment part 12 is provided with a long strip groove 121 along a direction perpendicular to the backrest frame 1; the plate-type adjustment member 4 is provided with an oblique long strip groove 41; the synchronous moving shaft 51 on the shoulder adjustment push bracket 5 passes through the oblique long strip groove 41 of the plate-type adjustment member and the long strip groove 121 of the bearing auxiliary adjustment part in sequence and is locked and fixed at the rear end.

[0028] In this embodiment, the lower end of the shoulder adjustment frame 2 is installed in front of the backrest frame 1 via the lower pivot 6, and can be angled relative to the backrest frame 1. The upper end of the shoulder adjustment frame 2 is connected to the shoulder adjustment push bracket 5 via the upper pivot 7.

[0029] The shoulder adjustment motor 3 is a lead screw motor, which is located near the upper end of the backrest frame 1; the plate adjustment component 4 has an adjustment slider 42 at one end near the lead screw motor, the adjustment slider 42 is threadedly connected to the lead screw of the lead screw motor, and the other end of the plate adjustment component 4 has two parallel oblique long slide grooves 41.

[0030] Furthermore, in this embodiment, the upper end of the backrest frame 1 is provided with a limiting groove 11 at the position where the plate-type adjustment component 4 is installed. The outer side of the plate-type adjustment component 4 is disposed in the limiting groove 11. The limiting groove 11 restricts the rotation of the plate-type adjustment component 4, so that it can only move back and forth along the lateral side of the backrest frame 1 under the drive of the shoulder adjustment motor 3. The backrest frame 1 is provided with a bearing auxiliary adjustment part 12 that matches the shape of the shoulder adjustment push bracket 5 at a position close to the limiting groove 11. The bearing auxiliary adjustment part 12 is disposed near the middle of the limiting groove 11.

[0031] Furthermore, in this embodiment, the upper end of the shoulder adjustment frame 2 is provided with an avoidance notch (unmarked) at a position opposite to the bearing auxiliary adjustment part 12, and a pad 8 is provided between the shoulder adjustment frame 2 and the backrest frame 1. The pad 8 is a hollow structure and is provided on the shoulder adjustment frame 2 and close to the avoidance notch to prevent the bearing auxiliary adjustment part 12 from protruding outward from the shoulder adjustment frame 2 when the shoulder adjustment frame 2 is in the initial state.

[0032] In this embodiment, the shoulder adjustment push bracket 5 is set at the clearance opening of the shoulder adjustment frame 2, and the two side walls adjacent to the end of the shoulder adjustment frame 2 are connected to the shoulder adjustment frame 2 through the upper rotating shaft 7. The other end is provided with a synchronous moving shaft 51 at the position opposite to the long slide groove 121.

[0033] Furthermore, such as Figure 4 , Figure 5 As shown, in this embodiment, the bearing auxiliary adjustment part 12 is provided with two parallel elongated slide grooves 121. The two parallel elongated slide grooves 121 are arranged opposite to the two parallel oblique elongated slide grooves 41 on the plate-type adjustment component 4 and the two synchronous moving shafts 51 on the shoulder adjustment push bracket 5. When the screw motor drives the plate-type adjustment component 4 to move laterally along the backrest frame 1, under the action of the oblique elongated slide grooves 41, the two synchronous moving shafts 51 move along the direction of the elongated slide grooves 121, thereby driving the shoulder adjustment frame 2 to move in a direction perpendicular to the backrest frame 1, thereby realizing the adjustment of the angle of the shoulder adjustment frame 2.

[0034] This embodiment also provides a seat, on which the aforementioned shoulder adjustment mechanism is installed. The seat is a zero-gravity seat, which can provide better support for the shoulders and back in zero-gravity mode through the shoulder adjustment mechanism. The specific adjustment method is as follows:

[0035] After the shoulder adjustment motor 3 is powered on, the lead screw pushes the adjustment slider 42 to move laterally. The adjustment slider 42 drives the plate-type adjustment component 4 to move laterally. The inclined long slide groove on the plate-type adjustment component 4 serves as the power input, guiding the synchronous moving shaft 51 to move. At the same time, the long slide groove 121 on the backrest frame 1 serves as a guide, allowing the synchronous moving shaft 51 to move forward. The upper end of the synchronous moving shaft 51 is connected to the shoulder adjustment push bracket 5, causing the shoulder adjustment frame 2 to rotate around the lower rotating shaft 6 of the shoulder adjustment. At this time, the angle between the shoulder adjustment frame 2 and the shoulder adjustment push bracket 5 will change. This change value is absorbed by the upper rotating shaft 7 of the shoulder adjustment, realizing the shoulder adjustment function.

[0036] The above describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat, characterized in that, The device includes a shoulder adjustment frame rotatably mounted in front of the backrest frame, a shoulder adjustment motor mounted on the backrest frame, a plate-type adjustment component positioned at the upper end of the backrest frame perpendicular to the backrest frame and capable of lateral movement relative to the backrest frame, and a shoulder adjustment push bracket connected at one end to the shoulder adjustment frame and the other end passing through the plate-type adjustment component and connected to the backrest frame. The upper end of the backrest frame has a bearing auxiliary adjustment section positioned opposite the plate-type adjustment component, and the bearing auxiliary adjustment section has a long groove along a direction perpendicular to the backrest frame. The plate-type adjustment component has an oblique long groove. The synchronous moving shaft on the shoulder adjustment push bracket passes sequentially through the oblique long groove of the plate-type adjustment component and the long groove of the bearing auxiliary adjustment component, and its rear end is locked and fixed.

2. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat as claimed in claim 1, wherein, The upper end of the backrest frame is provided with a limiting groove at the position where the plate-type adjustment component is installed. One side of the plate-type adjustment component is set in the limiting groove. The limiting groove restricts the rotation of the plate-type adjustment component, so that it can only move back and forth laterally along the backrest frame under the drive of the shoulder adjustment motor.

3. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat as claimed in claim 1, wherein, The lower end of the shoulder adjustment frame is mounted in front of the backrest frame via a lower pivot, allowing for angle adjustment relative to the backrest frame. The upper end of the shoulder adjustment frame is connected to the shoulder adjustment push bracket via an upper pivot.

4. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat according to claim 1, characterized in that, The upper end of the shoulder adjustment frame is provided with an avoidance notch at a position opposite to the bearing auxiliary adjustment part. A pad is provided between the shoulder adjustment frame and the backrest frame. The pad is a hollow structure and is set on the shoulder adjustment frame and close to the avoidance notch.

5. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat as claimed in claim 1, wherein, The shoulder adjustment motor is a lead screw motor, which is located near the upper end of the backrest frame; the plate-type adjustment component has an adjustment slider at one end near the lead screw motor, the adjustment slider is threadedly connected to the lead screw of the lead screw motor, and the other end of the plate-type adjustment component has two parallel oblique grooves.

6. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat as claimed in claim 2, wherein, The backrest frame has a bearing auxiliary adjustment part that matches the shape of the shoulder adjustment push bracket at a position close to the limiting groove. The bearing auxiliary adjustment part is located near the middle of the limiting groove.

7. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat as claimed in claim 4, wherein, The shoulder adjustment push bracket is set at the clearance opening of the shoulder adjustment frame. The two side walls at one end are connected to the shoulder adjustment frame through the upper rotating shaft, and the other end is provided with a synchronous moving shaft at the position opposite to the long slide groove.

8. A shoulder adjustment mechanism for a three-row fixed zero-gravity seat as claimed in claim 5, wherein, The bearing auxiliary adjustment part is provided with two parallel long strip grooves, which are arranged opposite to the two parallel oblique long strip grooves on the plate-type adjustment component and the two synchronous moving shafts on the shoulder adjustment push bracket.

9. A seat, characterized by The shoulder adjustment mechanism described above is installed on the backrest frame of the seat.

10. A seat according to claim 9, wherein The seat is a zero-gravity seat.

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