Horizontal holding handrail structure

Abstract

The invention provides a horizontal keeping armrest structure which comprises a backrest framework and an armrest assembly, armrest mounting supports are fixedly arranged at the two ends of the backrest framework, the two sides of the rear end of the armrest assembly are hinged to the armrest mounting supports through armrest rotating shafts, and the horizontal keeping armrest structure further 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. By means of the horizontal keeping mechanism, overturning limiting of the armrest assembly can be achieved, when the backrest framework overturns within the designed use angle range, under the condition of the dead weight of the armrest assembly, an armrest limiting shaft of the armrest assembly can rotate around the front limiting position of an arc-shaped limiting groove, and the armrest assembly can rotate around the front limiting position of the arc-shaped limiting groove. 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.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a horizontal holding armrest structure. Background Art

[0002] Nowadays, more and more rear seats of cars are equipped with armrests. In order to improve the convenience and flexibility of using the seat armrests, the seat armrests are usually set to be rotatable so that they can be opened when needed and rotated upward and folded when not needed. When the armrests are opened, they can meet the storage space requirements of passengers and the arm comfort requirements of rear passengers. However, when the armrests are in the open state and when the seat back is flipped within the designed use angle range, the current seat armrests cannot always remain in the horizontal open state, resulting in inconvenience in use. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention aims to provide a horizontal armrest structure to solve the problem that the existing seat armrest cannot always remain in a horizontal state when the backrest is flipped within the designed use angle range.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a horizontally maintaining armrest structure, including a backrest frame and an armrest assembly, wherein armrest mounting brackets are fixedly provided at both ends of the backrest frame, and the rear ends of the armrest assembly are hinged to the armrest mounting brackets through armrest rotating shafts. The horizontal maintaining mechanism can also be included, and the horizontal maintaining mechanism can limit the armrest assembly to flip between a horizontal open state and a closed state, and when the backrest frame flips within the designed use angle range, the horizontal maintaining mechanism can keep the armrest assembly in a horizontal state after opening.

[0005] In the above scheme: the armrest mounting bracket is provided with an arc-shaped slide groove for the armrest rotation axis to pass through, the angle of the arc-shaped slide groove is consistent with the design and use angle of the backrest frame, the armrest rotation axis is hinged in the arc-shaped slide groove and can slide along it, the horizontal holding mechanism includes a foot assembly, an arc-shaped limit groove and a guide rail arranged on the left and / or right side of the armrest assembly, the arc-shaped limit groove is arranged on the rear side thereof with the front end of the arc-shaped slide groove as the center of the circle, the angle of the arc-shaped limit groove is consistent with the flipping angle of the armrest assembly, and the rear of the armrest assembly The two sides of the end are hinged in the corresponding side arc-shaped limit grooves through the armrest limit shaft, and can slide along the arc-shaped limit grooves. The guide rail is arranged obliquely, and a strip guide groove is provided on it along its length direction. The left and / or right sides of the rear end of the armrest assembly are also hinged in the corresponding side strip guide grooves through the guide rail limit shaft, and can slide along the strip guide grooves. The guide rail limit shaft is located on the rear side of the armrest limit shaft. Backrest mounting brackets are fixed on both sides of the lower end of the backrest frame. The lower end of the backrest mounting bracket and the rear end of the guide rail are hinged on the foot assembly, and the two hinge points are arranged one in front and one in the back.

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

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

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

[0009] The process of the armrest assembly remaining horizontal: when the backrest frame flips forward or backward within the designed use angle range (specifically, it can be designed to be 110°~130°), the armrest limit axis of the armrest assembly will rotate around the front limit position of the arc-shaped limit groove under the condition of its own weight, and the armrest rotation axis slides in the arc-shaped slide groove. Since the length of the guide rail is fixed, the self-rotation angle of the armrest assembly is always limited by the top of the strip guide groove. Through rotation point calculation and motion fitting, the rotation angle of the backrest frame is equal to the self-rotation angle of the armrest assembly, so the armrest assembly always remains horizontal during the flipping of the backrest frame.

[0010] In the above scheme: the anchor assembly includes an anchor installation crossbeam, two anchor installation brackets arranged symmetrically on the left and right, and two anchor installation sheet metals arranged symmetrically on the left and right. The upper ends of the two anchor installation brackets are hinged to the backrest installation brackets on both sides one by one, and the lower ends of the two anchor installation brackets are welded to the anchor installation crossbeam. The anchor installation crossbeam is fixed between the two anchor installation sheet metals, and the anchor installation sheet metal is 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 entire anchor assembly has a simple structure and high stability.

[0011] In the above scheme: a buffer damping block is arranged on the armrest mounting bracket, which plays a buffering role when the armrest assembly is flipped over, thereby realizing a smooth flipping of the armrest assembly.

[0012] In the above scheme: the handrail rotating shaft is limited in the arc-shaped slide groove by the step bolt, and the guide rail limiting shaft is limited in the strip guide groove by the step bolt, which has a simple structure and is easy to assemble.

[0013] In the above scheme: the guide rail is arranged on the left side of the armrest assembly, the armrest mounting bracket on the left side is fixed to the backrest frame by bolts, and the armrest mounting bracket on the right side is welded to the backrest frame. The left armrest mounting bracket and the backrest frame are detachably mounted, which is convenient for assembling the armrest assembly and installing the guide rail from the left side.

[0014] In the above scheme: the upper end of the backrest frame of the anchor mounting bracket is provided with a support ear structure backwards, and the rear end of the guide rail is hinged to the support ear structure, which has a simple structure and is easy to process.

[0015] The beneficial effects of the present invention are as follows: through the horizontal holding mechanism, the flipping limit of the armrest assembly can be achieved, so that it can only be flipped between a horizontal open state and a closed state (storage state), and when the backrest frame is flipped within the designed use angle range, the horizontal holding mechanism can keep the armrest assembly in a horizontal state after opening, 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 invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic diagram of the present invention in a horizontally opened state.

[0018] Figure 2 It is a schematic diagram of the present invention being flipped from a horizontally open state to a closed state.

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

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

[0021] Figure 5 It is a structural schematic diagram of the right handrail mounting bracket. DETAILED DESCRIPTION

[0022] like Figure 1 As shown in FIG. 5 , a horizontal holding armrest structure is mainly composed of a backrest frame 1, an armrest assembly 2 and a horizontal holding mechanism. Armrest mounting brackets 3 are fixedly provided at both ends of the backrest frame 1, and both sides of the rear end of the armrest assembly 2 are hinged to the armrest mounting brackets 3 through an armrest rotating shaft 4.

[0023] The horizontal holding mechanism can limit the armrest assembly 2 to flip 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.

[0024] Preferably, the armrest mounting bracket 3 is provided with an arcuate slot 5 for the armrest rotating shaft 4 to pass through, the angle of the arcuate slot 5 is consistent with the design and use angle of the backrest frame 1, and the armrest rotating shaft 4 is hinged in the arcuate slot 5 and can slide along it.

[0025] The horizontal holding mechanism includes a foot assembly, an arc-shaped limit groove 6, and a guide rail 7 arranged on the left and / or right side of the armrest assembly 2. The arc-shaped limit groove 6 is arranged on the rear side of the arc-shaped slide groove 5 with the front end of the arc-shaped limit groove 6 as the center of the circle. The angle of the arc-shaped limit groove 6 is consistent with the flip angle 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 limit groove 6 through the armrest limit shaft 8, and can slide along the arc-shaped limit groove 6. That is, the arc-shaped slide groove 5 sets the arc length of the groove according to the design and use angle of the backrest, and the arc-shaped limit groove 6 sets the arc length of the groove according to the flip angle of the armrest assembly 2.

[0026] The guide rail 7 is arranged obliquely, and a strip guide groove 10 is provided on it along its length direction. The left side and / or right side of the rear end of the armrest assembly 2 is also hinged in the corresponding side strip guide groove 10 through the guide rail limit shaft 9, and can slide along the strip guide groove 10. The guide rail limit shaft 9 is located on the rear side of the armrest limit shaft 8. Backrest mounting brackets 11 are fixed on both sides of the lower end of the backrest frame 1. The lower end of the backrest mounting bracket 11 and the rear end of the guide rail 7 are both hinged on the foot assembly, and the two hinge points are arranged one in front and one in the back.

[0027] The armrest assembly closing process: the armrest assembly 2 flips backward around the armrest rotation axis 4, the armrest limit axis 8 slides to the rear limit position of the arc-shaped limit groove 6, and the guide rail 7 and the guide rail limit axis 9 rotate downward.

[0028] The armrest assembly opening process: the armrest assembly 2 flips forward around the armrest rotation axis 4 to a horizontal state, the armrest limit axis 8 slides to the front limit position of the arc-shaped limit groove 6, and the guide rail 7 and the guide rail limit axis 9 rotate upward.

[0029] The process of the armrest assembly remaining horizontal: when the backrest frame 1 flips forward or backward within the designed use angle range (specifically, it can be designed to be 110°~130°), the armrest assembly 2, under the condition of its own weight, its armrest limit axis 8 will rotate around the front limit position of the arc-shaped limit groove 6, and at the same time the armrest rotation axis 4 slides in the arc-shaped slide groove 5. Since the length of the guide rail 7 is fixed, the self-rotation angle of the armrest assembly 2 is always limited by the top of the strip guide groove 10. Through rotation point calculation and motion fitting, the rotation angle of the backrest frame 1 is equal to the self-rotation angle of the armrest assembly 2, so the armrest assembly 2 always remains horizontal during the flipping process of the backrest frame 1.

[0030] Preferably, the anchor assembly includes an anchor mounting crossbeam 12, two anchor mounting brackets 13 arranged symmetrically on the left and right, and two anchor mounting sheet metals 14 arranged symmetrically on the left and right. The upper ends of the two anchor mounting brackets 13 are hinged to the backrest mounting brackets 11 on both sides, and the lower ends of the two anchor mounting brackets 13 are welded to the anchor mounting crossbeam 12. The anchor mounting crossbeam 12 is fixed between the two anchor mounting sheet metals 14. The anchor mounting sheet metal 14 is 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 entire anchor assembly has a simple structure and high stability.

[0031] Preferably, a buffer damping block 15 is provided on the armrest mounting bracket 3 to play a buffering role when the armrest assembly 2 is turned over, thereby achieving a smooth turning of the armrest assembly 2.

[0032] Preferably, the handrail rotating shaft 4 is limited in the arc-shaped slide groove 5 by step bolts, and the guide rail limiting shaft 9 is limited in the strip guide groove 10 by step bolts, which has a simple structure and is easy to assemble.

[0033] Preferably, the guide rail 7 is arranged on the left side of the armrest assembly 2, the left armrest mounting bracket 3 is fixed to 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 assembling the armrest assembly 2 and installing the guide rail 7 from the left side.

[0034] Preferably, the upper end of the backrest frame 13 of the anchor mounting bracket is provided with a support ear structure 16 backward, and the rear end of the guide rail 7 is hinged to the support ear structure 16, which has a simple structure and is easy to process.

Claims

1. A horizontal holding armrest structure, comprising a backrest frame (1) and an armrest assembly (2), wherein armrest mounting brackets (3) are fixedly provided at both ends of the backrest frame (1), and both sides of the rear end of the armrest assembly (2) are hinged to the armrest mounting brackets (3) through an armrest rotating shaft (4), characterized in that: It also includes a horizontal holding mechanism, which can limit the armrest assembly (2) to flip between a horizontal open state and a 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.

2. The horizontal holding handrail structure according to claim 1, characterized in that: The armrest mounting bracket (3) is provided with an arc-shaped slide groove (5) for the armrest rotating shaft (4) to pass through, the angle of the arc-shaped slide groove (5) is consistent with the design and use angle of the backrest frame (1), the armrest rotating shaft (4) is hinged in the arc-shaped slide groove (5) and can slide along it, the horizontal holding mechanism includes a foot assembly, an arc-shaped limit groove (6) and a guide rail (7) arranged on the left and / or right side of the armrest assembly (2), the arc-shaped limit groove (6) is arranged on the rear side of the arc-shaped slide groove (5) with the front end of the arc-shaped limit groove (6) as the center of the circle, the angle of the arc-shaped limit groove (6) is consistent with the flipping angle of the armrest assembly (2), and the rear ends of the armrest assembly (2) are connected by two sides. The armrest limiting shaft (8) is hinged in the corresponding side arc-shaped limiting groove (6) and can slide along the arc-shaped limiting groove (6). The guide rail (7) is arranged obliquely and is provided with a strip guide groove (10) along its length direction. The left side and / or right side of the rear end of the armrest assembly (2) is also hinged in the corresponding side strip guide groove (10) through the guide rail limiting shaft (9) and can slide along the strip guide groove (10). The guide rail limiting shaft (9) is located on the rear side of the armrest limiting shaft (8). Backrest mounting brackets (11) are fixedly provided on both sides of the lower end of the backrest frame (1). The lower end of the backrest mounting bracket (11) and the rear end of the guide rail (7) are both hinged on the foot assembly, and the two hinge points are arranged one in front and one in the back.

3. The horizontal holding handrail structure according to claim 2, characterized in that: The anchor assembly comprises an anchor installation crossbeam (12), two anchor installation brackets (13) arranged symmetrically on the left and right, and two anchor installation sheet metals (14) arranged symmetrically on the left and right. The upper ends of the two anchor installation brackets (13) are hinged to the backrest installation brackets (11) on both sides, and the lower ends of the two anchor installation brackets (13) are welded to the anchor installation crossbeam (12). The anchor installation crossbeam (12) is fixed between the two anchor installation sheet metals (14). The anchor installation sheet metal (14) is used to be fixed to the vehicle body floor.

4. The horizontal holding handrail structure according to claim 2, characterized in that: A buffer damping block (15) is provided on the handrail mounting bracket (3).

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

6. The horizontal holding handrail structure according to claim 2, characterized in that: The guide rail (7) is arranged on the left side of the armrest assembly (2); the armrest mounting bracket (3) on the left side is fixed to the backrest frame (1) by bolts; and the armrest mounting bracket (3) on the right side is welded to the backrest frame (1).

7. The horizontal holding handrail structure according to claim 3, characterized in that: The upper end of the anchor mounting bracket (13) is provided with a support ear structure (16) facing backwards, and the rear end of the guide rail (7) is hinged to the support ear structure (16).

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