Handrail structure capable of achieving horizontal keeping

By designing a horizontal retaining mechanism on the car seat armrests, the combination of curved slide chutes and limiting slots solves the problem that the armrests cannot maintain their level during the backrest flip, and improves the convenience of the seat armrests.

CN223058869UActive Publication Date: 2025-07-04MAGNA AUTOMOTIVE TECHNOLOGY AND SERVICE (SHANGHAI) CO LTD XUHUI BRANCH
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Patent Information

Application Number
CN202422635048.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-07-04
Estimated Expiration
2034-10-30

AI Technical Summary

Technical Problem

The existing car seat armrests cannot remain horizontal during the flip of the backrest, resulting in inconvenience in use.

Method used

A horizontal retaining mechanism is designed, including arcuate slide grooves, arcuate limit grooves and guide rails. Through the coordination of the handrail rotation shaft and limit shaft, the handrail is ensured to always maintain level during the flip of the backrest frame.

Benefits of technology

The armrests are always maintained at a level during the flip of the backrest skeleton, which improves the flexibility and practicality of the seat armrests.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223058869U_ABST
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Abstract

The utility model provides an armrest structure capable of realizing horizontal keeping, which comprises a backrest framework and an armrest assembly, armrest mounting brackets are fixedly arranged at two ends of the backrest framework, two sides of the rear end of the armrest assembly are hinged on the armrest mounting brackets through armrest rotating shafts, and the armrest structure also comprises a horizontal keeping mechanism, the horizontal keeping mechanism can limit the armrest assembly to turn over between a horizontal opening state and a horizontal closing state, and when the backrest framework turns over within a designed use angle range, the horizontal keeping mechanism can enable the opened armrest assembly to be kept in a horizontal state all the time. According to the utility model, the turnover limiting of the armrest assembly can be realized through the horizontal keeping mechanism, and when the backrest framework is turned over within a designed use angle range, the armrest limiting shaft of the armrest assembly can rotate around the front limit position of the arc-shaped limiting groove under the condition of self weight, so that the armrest assembly can be turned over. The opened armrest assembly is always kept horizontal in the overturning process of the backrest framework, and flexibility and practicability of the seat armrest are effectively improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, in particular to an armrest structure capable of achieving horizontal retention. Background Art

[0002] Nowadays, more and more rear seats of vehicles are equipped with armrest functions. To improve the convenience and flexibility of using the seat armrests, the seat armrests are usually set to be rotatable, so as to be opened when needed and rotated upward to be retracted when not needed. When the armrests are opened, they can not only meet the storage space requirements of passengers but also meet the arm comfort requirements of rear passengers. However, when the armrests are in the open state and the seat backrest is flipped within the designed use angle range, the current seat armrests cannot always maintain a horizontal open state, resulting in inconvenient use. Content of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model aims to provide an armrest structure capable of achieving horizontal retention to solve the problem that the existing seat armrests cannot always maintain a horizontal state when the backrest is flipped within the designed use angle range.

[0004] To achieve the above object, the utility model provides an armrest structure capable of achieving horizontal retention, which includes a backrest frame and an armrest assembly. Armrest mounting brackets are fixedly provided at both ends of the backrest frame. The rear ends of both sides of the armrest assembly are hinged to the armrest mounting brackets through armrest rotating shafts. The armrest structure further includes a horizontal retention mechanism, which can limit the flipping of the armrest assembly between the horizontal open state and the closed state, and when the backrest frame is flipped within the designed use angle range, the horizontal retention mechanism can make the opened armrest assembly always maintain a horizontal state.

[0005] In the above solution: an arc-shaped sliding groove for the armrest rotating shaft to pass through is provided on the armrest mounting bracket. The angle size of the arc-shaped sliding groove is the same as the designed use angle size of the backrest frame. The armrest rotating shaft is hinged in the arc-shaped sliding groove and can slide along it. The horizontal retention mechanism includes a floor assembly, an arc-shaped limiting groove, and guide rails arranged on the left side and / or the right side of the armrest assembly. The arc-shaped limiting groove is arranged on the rear side thereof with the frontmost end of the arc-shaped sliding groove as the center of the circle. The angle size of the arc-shaped limiting groove is the same as the flipping angle size of the armrest assembly. The rear ends of both sides of the armrest assembly are hinged to the corresponding side arc-shaped limiting grooves through armrest limiting shafts and can slide along the arc-shaped limiting grooves. The guide rails are obliquely arranged, and strip-shaped guide grooves are provided along their lengths. The rear ends of the left side and / or the right side of the armrest assembly are also hinged to the corresponding side strip-shaped guide grooves through guide rail limiting shafts and can slide along the strip-shaped guide grooves. The guide rail limiting shafts are located behind the armrest limiting shafts. Backrest mounting brackets are fixedly provided at both lower ends of the backrest frame. The lower ends of the backrest mounting brackets and the rear ends of the guide rails are both hinged to the floor assembly, and the two hinge points are arranged at intervals, one in front of the other.

[0006] That is, the arc length of the arc-shaped chute is set according to the designed use angle of the backrest, and the arc length of the arc-shaped limiting groove is set according to the flipping angle of the armrest assembly.

[0007] Closing process of the armrest assembly: The armrest assembly rotates backward around the armrest rotation shaft, the armrest limiting shaft slides to the rear limit position of the arc-shaped limiting groove, and the guide rail and the guide rail limiting shaft rotate downward.

[0008] Opening process of the armrest assembly: The armrest assembly rotates forward around the armrest rotation shaft to the horizontal state, the armrest limiting shaft slides to the front limit position of the arc-shaped limiting groove, and the guide rail and the guide rail limiting shaft rotate upward.

[0009] Process of the armrest assembly maintaining horizontal: When the backrest frame rotates forward or backward within the designed use angle range (specifically, it can be designed as 110° - 130°), under the condition of its own weight, the armrest limiting shaft of the armrest assembly will rotate around the front limit position of the arc-shaped limiting groove, and at the same time, the armrest rotation shaft slides in the arc-shaped chute. Since the length of the guide rail is fixed, the rotation angle of the armrest assembly is always limited by the top of the strip-shaped guide groove. Through rotation point calculation and motion fitting, the rotation angle of the backrest frame is equal to the rotation angle of the armrest assembly. Therefore, the armrest assembly always maintains horizontal during the flipping process of the backrest frame.

[0010] In the above solution: The floor foot assembly includes a floor foot installation cross beam, two floor foot installation brackets arranged symmetrically left and right, and two floor foot installation sheet metals arranged symmetrically left and right. The upper ends of the two floor foot installation brackets are respectively hinged to the backrest installation brackets on both sides, the lower ends of the two floor foot installation brackets are welded to the floor foot installation cross beam, the floor foot installation cross beam is fixed between the two floor foot installation sheet metals, and the floor foot installation sheet metals are used to be fixed to the vehicle body floor. The backrest installation bracket is fixed, and the backrest frame rotates around the hinge point on the backrest installation bracket. The whole floor foot assembly has a simple structure and high stability.

[0011] In the above solution: A buffer damping block is arranged on the armrest installation bracket, which plays a buffering role when the armrest assembly flips, realizing the smooth flipping of the armrest assembly.

[0012] In the above solution: The armrest rotation shaft is limited in the arc-shaped chute through a step bolt, and the guide rail limiting shaft is limited in the strip-shaped guide groove through a step bolt, with a simple structure and convenient assembly.

[0013] In the above solution: The guide rail is arranged on the left side of the armrest assembly. The left armrest installation bracket is fixed to the backrest frame through bolts, and the right armrest installation bracket is welded to the backrest frame. The left armrest installation bracket and the backrest frame are detachably installed, which is convenient for the assembly of the armrest assembly and the installation of the guide rail from the left side.

[0014] In the above solution: at the upper end of the backrest frame of the floor mounting bracket, there is a lug structure extending backward, and the rear end of the guide rail is hinged to the lug structure, with a simple structure and convenient processing.

[0015] The beneficial effects of the present utility model are as follows: through the horizontal holding mechanism, the flipping limit of the armrest assembly can be achieved, enabling it to only flip between the horizontal open state and the closed state (storage state). Moreover, when the backrest frame flips within the designed use angle range, the horizontal holding mechanism can keep the opened armrest assembly in a horizontal state all the time, so as to improve the flexibility and practicality of the seat armrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a schematic diagram of the present utility model in the horizontal open state.

[0018] Figure 2 is a schematic diagram of the present utility model flipped from the horizontal open state to the closed state.

[0019] Figure 3 is a schematic diagram of the backrest frame flipping within the designed use angle range.

[0020] Figure 4 is a schematic structural diagram of the left armrest mounting bracket.

[0021] Figure 5 is a schematic structural diagram of the right armrest mounting bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As shown in Figure 1 —5, an armrest structure capable of achieving horizontal holding mainly consists of a backrest frame 1, an armrest assembly 2, and a horizontal holding mechanism. At both ends of the backrest frame 1, there are fixedly provided armrest mounting brackets 3, and the two sides at the rear end of the armrest assembly 2 are hinged to the armrest mounting brackets 3 through armrest rotating shafts 4.

[0023] The horizontal holding mechanism can limit the flipping of the armrest assembly 2 between the horizontal open state and the closed state, and when the backrest frame 1 flips within the designed use angle range, the horizontal holding mechanism can keep the opened armrest assembly 2 in a horizontal state all the time.

[0024] Preferably, on the armrest mounting bracket 3, there is an arc-shaped chute 5 for the armrest rotating shaft 4 to pass through. The angle size of the arc-shaped chute 5 is the same as the angle size of the designed use angle of the backrest frame 1, and the armrest rotating shaft 4 is hinged in the arc-shaped chute 5 and can slide along it.

[0025] The horizontal holding mechanism includes a floor assembly, an arc-shaped limiting groove 6, and guide rails 7 provided on the left side and / or the right side of the armrest assembly 2. The arc-shaped limiting groove 6 is arranged on the rear side thereof with the frontmost end of the arc-shaped chute 5 as the center of the circle. The angular size of the arc-shaped limiting groove 6 is the same as the flipping angle size of the armrest assembly 2. The two sides of the rear end of the armrest assembly 2 are hinged to the corresponding side arc-shaped limiting groove 6 through armrest limiting shafts 8 and can slide along the arc-shaped limiting groove 6. That is, the arc length of the arc-shaped chute 5 is set according to the designed use angle of the backrest, and the arc length of the arc-shaped limiting groove 6 is set according to the flipping angle of the armrest assembly 2.

[0026] The guide rails 7 are arranged obliquely. A strip-shaped guide groove 10 is provided along the length direction thereof. The left side and / or the right side of the rear end of the armrest assembly 2 is also hinged to the corresponding side strip-shaped guide groove 10 through a guide rail limiting shaft 9 and can slide along the strip-shaped guide groove 10. The guide rail limiting shaft 9 is located at the rear side of the armrest limiting shaft 8. Both sides of the lower end of the backrest frame 1 are fixedly provided with backrest mounting brackets 11. The lower ends of the backrest mounting brackets 11 and the rear ends of the guide rails 7 are both hinged to the floor assembly, and the two hinge points are arranged at intervals, one in front and the other behind.

[0027] Closing process of the armrest assembly: The armrest assembly 2 rotates backward around the armrest rotation shaft 4. The armrest limiting shaft 8 slides to the rear extreme position of the arc-shaped limiting groove 6, and the guide rails 7 and the guide rail limiting shaft 9 rotate downward.

[0028] Opening process of the armrest assembly: The armrest assembly 2 rotates forward around the armrest rotation shaft 4 to the horizontal state. The armrest limiting shaft 8 slides to the front extreme position of the arc-shaped limiting groove 6, and the guide rails 7 and the guide rail limiting shaft 9 rotate upward.

[0029] Process of the armrest assembly maintaining horizontal: When the backrest frame 1 rotates forward or backward within the designed use angle range (specifically, it can be designed as 110° - 130°), under the condition of its own weight, the armrest limiting shaft 8 of the armrest assembly 2 will rotate around the front extreme position of the arc-shaped limiting groove 6, and at the same time, the armrest rotation shaft 4 slides within the arc-shaped chute 5. Since the length of the guide rail 7 is fixed, the rotation angle of the armrest assembly 2 is always limited by the top end of the strip-shaped guide groove 10. Through rotation point calculation and motion fitting, the rotation angle of the backrest frame 1 is equal to the rotation angle of the armrest assembly 2. Therefore, the armrest assembly 2 always maintains horizontal during the flipping process of the backrest frame 1.

[0030] Preferably, the floor assembly includes a floor mounting cross beam 12, two floor mounting brackets 13 arranged symmetrically on the left and right, and two floor mounting sheet metals 14 arranged symmetrically on the left and right. The upper ends of the two floor mounting brackets 13 are respectively hinged to the two backrest mounting brackets 11 on both sides. The lower ends of the two floor mounting brackets 13 are welded to the floor mounting cross beam 12. The floor mounting cross beam 12 is fixed between the two floor mounting sheet metals 14, and the floor mounting sheet metals 14 are used to be fixed to the vehicle body floor. The backrest mounting bracket 11 is fixed, and the backrest frame 1 rotates around the hinge point on the backrest mounting bracket 11. The whole floor assembly has a simple structure and high stability.

[0031] Preferably, a buffer damping block 15 is arranged on the armrest mounting bracket 3 to play a buffering role when the armrest assembly 2 is flipped, so as to realize the smooth flipping of the armrest assembly 2.

[0032] Preferably, the armrest rotating shaft 4 is limited in the arc-shaped chute 5 by a step bolt, and the guide rail limiting shaft 9 is limited in the strip-shaped guide groove 10 by a step bolt, with a simple structure and convenient assembly.

[0033] Preferably, the guide rail 7 is arranged on the left side of the armrest assembly 2. The left armrest mounting bracket 3 is fixedly arranged on the backrest frame 1 by bolts, and the right armrest mounting bracket 3 is welded to the backrest frame 1. The left armrest mounting bracket 3 and the backrest frame 1 are detachably mounted, which is convenient for the assembly of the armrest assembly 2 and the installation of the guide rail 7 from the left side.

[0034] Preferably, the upper end of the floor mounting bracket backrest frame 13 is provided with an ear structure 16 towards the rear, and the rear end of the guide rail 7 is hinged to the ear structure 16, with a simple structure and convenient processing.

Claims

1. An armrest structure capable of achieving horizontal holding, comprising a backrest skeleton (1) and an armrest assembly (2). Armrest mounting brackets (3) are fixedly provided at both ends of the backrest skeleton (1). The two sides of the rear end of the armrest assembly (2) are hinged to the armrest mounting brackets (3) through armrest rotating shafts (4), and it is characterized in that: It further includes a horizontal holding mechanism which can define the flipping of the armrest assembly (2) between the horizontally open state and the closed state, and when the backrest frame (1) flips within the designed use angle range, the horizontal holding mechanism can keep the opened armrest assembly (2) in a horizontal state all the time.

2. The armrest structure capable of achieving horizontal retention according to claim 1, wherein: An arc-shaped sliding groove (5) through which the armrest rotating shaft (4) passes is provided on the armrest mounting bracket (3). The angle size of the arc-shaped sliding groove (5) is the same as the designed use angle size of the backrest frame (1). The armrest rotating shaft (4) is hinged in the arc-shaped sliding groove (5) and can slide along it. The horizontal holding mechanism includes a floor assembly, an arc-shaped limiting groove (6), and guide rails (7) arranged on the left side and / or the right side of the armrest assembly (2). The arc-shaped limiting groove (6) is arranged on the rear side thereof with the frontmost end of the arc-shaped sliding groove (5) as the center of the circle. The angle size of the arc-shaped limiting groove (6) is the same as the flipping angle size of the armrest assembly (2). The two sides of the rear end of the armrest assembly (2) are hinged in the corresponding side arc-shaped limiting groove (6) through armrest limiting shafts (8) and can slide along the arc-shaped limiting groove (6). The guide rails (7) are arranged obliquely, and strip-shaped guide grooves (10) are provided along their lengths. The left side and / or the right side of the rear end of the armrest assembly (2) are also hinged in the corresponding side strip-shaped guide groove (10) through guide rail limiting shafts (9) and can slide along the strip-shaped guide groove (10). The guide rail limiting shafts (9) are located at the rear side of the armrest limiting shafts (8). The two sides of the lower end of the backrest frame (1) are fixedly provided with backrest mounting brackets (11). The lower ends of the backrest mounting brackets (11) and the rear ends of the guide rails (7) are both hinged on the floor assembly, and the two hinge points are arranged at intervals, one in front of the other.

3. The armrest structure capable of achieving horizontal retention according to claim 2, characterized in that: The floor assembly includes a floor mounting cross beam (12), two floor mounting brackets (13) arranged symmetrically left and right, and two floor mounting sheet metals (14) arranged symmetrically left and right. The upper ends of the two floor mounting brackets (13) are respectively hinged to the two side backrest mounting brackets (11). The lower ends of the two floor mounting brackets (13) are welded to the floor mounting cross beam (12). The floor mounting cross beam (12) is fixedly arranged between the two floor mounting sheet metals (14). The floor mounting sheet metals (14) are used for fixing to the vehicle body floor.

4. The armrest structure capable of achieving horizontal retention according to claim 2, wherein: A buffer damping block (15) is arranged on the armrest mounting bracket (3).

5. The armrest structure capable of achieving horizontal holding according to claim 2, characterized in that: The armrest rotating shaft (4) is limited in the arc-shaped sliding groove (5) through a stepped bolt, and the guide rail limiting shaft (9) is limited in the strip-shaped guide groove (10) through a stepped bolt.

6. The armrest structure capable of achieving horizontal retention according to claim 2, wherein: The guide rail (7) is arranged on the left side of the armrest assembly (2). The left side armrest mounting bracket (3) is fixedly arranged on the backrest frame (1) through bolts, and the right side armrest mounting bracket (3) is welded to the backrest frame (1).

7. The armrest structure capable of achieving horizontal retention according to claim 3, wherein: The upper end of the floor mounting bracket (13) is provided with an ear structure (16) at the rear. The rear end of the guide rail (7) is hinged to the ear structure (16).