Angle-adjustable central armrest

Abstract

The angle-adjustable central armrest comprises an armrest framework, the rear portion of the armrest framework is rotationally installed between a left support and a right support through a rotating shaft, the left end of the rotating shaft penetrates through the left support, an angle adjusting mechanism is installed at the left penetrating-out end of the rotating shaft, and the angle adjusting mechanism is installed on the outer side of the left support. The angle adjusting mechanism is arranged, so that the angle of the central armrest can be adjusted according to the turnover condition of the backrest, and the comfort of passengers is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seat armrests, and in particular to a central armrest with adjustable angle. Background Art

[0002] With the development of the automobile industry, people have higher and higher demands for the comfort of automobile operation and use. As an interior structural part used to support the passengers' arms on the car seat, the central armrest of the car is an important component to improve the passenger's riding comfort. A well-designed seat armrest can improve the comfort and safety of the car seat and the vehicle.

[0003] Currently, passengers can adjust the seat back according to their comfort, but the armrests beside the seat can only be opened or closed. Since the rear center armrests of existing car seat products are all non-position adjustable armrests, the armrests without position adjustment angle cannot maintain a comfortable position when the backrest is flipped. Therefore, it is necessary to design a center armrest that can adaptively adjust the angle when the backrest is flipped. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an angle-adjustable central armrest with gear adjustment.

[0005] The technical scheme is as follows: an angle-adjustable central armrest, comprising an armrest frame, the rear portion of which is rotatably mounted between a left bracket and a right bracket via a rotating shaft, the key points of which are: the left end of the rotating shaft passes through the left bracket, an angle adjustment mechanism is mounted on the left end of the rotating shaft, and the angle adjustment mechanism is mounted on the outside of the left bracket. The angle adjustment mechanism can be set to adjust the angle of the central armrest according to the flipping of the backrest, thereby improving the comfort of the passengers.

[0006] Preferably, the angle adjustment mechanism comprises a guide piece, a ratchet and a pawl, the guide piece is loosely sleeved on the rotating shaft, an arc-shaped guide groove is provided on the guide piece, the ratchet is fixedly sleeved on the rotating shaft, the ratchet is located outside the guide piece, a plurality of gear ratchet teeth are distributed on the side wall of the ratchet, a driving rod is provided on the end face of the ratchet close to the guide piece, and the outer end of the driving rod extends into the arc-shaped guide groove;

[0007] The pawl is mounted on the left bracket via an intermediate shaft, and the pawl is located on one side of the ratchet wheel. A torsion spring is mounted on the intermediate shaft between the left bracket and the pawl, and one end of the torsion spring is mounted on the left bracket, and the other end is against the side wall of the pawl away from the ratchet wheel. A limit pawl is provided on the side wall of the pawl close to the ratchet wheel, and the limit pawl can mesh with the gear ratchet to achieve gear adjustment;

[0008] An unlocking rod is arranged on the end surface of the pawl close to the left bracket, and an unlocking protrusion is arranged on the side wall of the guide piece, and the unlocking rod rests on the side wall of the unlocking protrusion.

[0009] As a preference: a limiting protrusion is provided on the side wall of the ratchet wheel, and when the ratchet wheel rotates forward so that the limiting protrusion touches the side wall of the pawl, the driving rod drives the guide piece to rotate, and the unlocking protrusion pushes the unlocking rod to lift the pawl, and the unlocking rod leans against the lower side wall of the unlocking protrusion to realize the opening of the central armrest, and at this time, the gear ratchet is engaged with the limiting pawl at the lowest position on the side wall of the ratchet wheel;

[0010] The ratchet rotates in the opposite direction, and the pawl is lifted so that the gear ratchet engages with multiple gear ratchets on the side wall of the ratchet respectively. When the driving rod touches the side wall of the arc guide groove to drive the guide plate to rotate, the unlocking protrusion pushes the unlocking rod to lift the pawl, and the unlocking rod rests on the upper side wall of the unlocking protrusion to close the central armrest.

[0011] Preferably, the gear angle of the adjacent gear ratchet teeth on the ratchet wheel is 8°.

[0012] Preferably: a limiting plate is provided on the right bracket, the right end of the rotating shaft is rotatably mounted on the limiting plate, an arc-shaped limiting groove is provided on the limiting plate, a limiting shaft is fixed on the armrest frame near the right bracket, the limiting shaft extends into the arc-shaped limiting groove, and the two ends of the arc-shaped limiting groove can limit the opening and closing adjustment of the armrest frame.

[0013] Preferably, a connecting piece is installed on the outside of the ratchet and the pawl, and the connecting piece is fixed on the rotating shaft and the intermediate shaft.

[0014] Preferably, a damping gasket is installed on the intermediate shaft outside the rotating shaft, and a step bolt is installed on the outside of the damping gasket.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The central armrest can be adjusted in angle as the angle of the backrest changes, which is more suitable for comfort requirements; 2. The structure is simple and requires little space; 3. The mechanism has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the closed position of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the middle angle adjustment mechanism;

[0018] Figure 3 for Figure 2 Exploded diagram of

[0019] Figure 4 This is a schematic diagram of the structure of the present invention when it is opened to the lowest position;

[0020] Figure 5 It is a schematic diagram of the meshing structure of the ratchet wheel 2 and the pawl 4 in the first gear of the present invention;

[0021] Figure 6 It is a schematic diagram of the meshing structure of the ratchet wheel 2 and the pawl 4 in the second gear of the present invention;

[0022] Figure 7 It is a schematic diagram of the meshing structure of the ratchet wheel 2 and the pawl 4 in the third gear of the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with embodiments and drawings.

[0024] like Figures 1 to 7 As shown, an angle-adjustable central armrest is composed of an armrest frame 8, a left bracket 9 and a right bracket 10, wherein the structure of the armrest frame 8 is prior art and is not elaborated here. The rear portion of the armrest frame 8 is rotatably installed between the left bracket 9 and the right bracket 10 via a rotating shaft 1, and the left end of the rotating shaft 1 passes through the left bracket 9. An angle adjustment mechanism is installed at the left end of the rotating shaft 1, and the angle adjustment mechanism is installed on the outside of the left bracket 9.

[0025] Combination Figure 1 , Figure 2 and Figure 3It can be seen that the angle adjustment mechanism includes a guide piece 3, a ratchet 2 and a pawl 4. The guide piece 3 is loosely mounted on the rotating shaft 1. An arc-shaped guide groove 3a is provided on the guide piece 3. The ratchet 2 is fixedly mounted on the rotating shaft 1. The ratchet 2 is located outside the guide piece 3. A plurality of gear ratchet teeth 2a are distributed on the side wall of the ratchet 2. A driving rod 2b is provided on the end face of the ratchet 2 close to the guide piece 3. The outer end of the driving rod 2b extends into the arc-shaped guide groove 3a. The pawl 4 is installed on the left bracket 9 via an intermediate shaft 11. The pawl 4 is located on one side of the ratchet 2. A torsion spring 5 is mounted on the intermediate shaft 11 between the left bracket 9 and the pawl 4. One end of the torsion spring 5 is installed in the A mounting hole is provided on the left bracket 9, that is, on the left bracket 9, one end of the torsion spring 5 is passed through the mounting hole, and the other end rests on the side wall of the pawl 4 away from the ratchet 2. Specifically, a mounting groove is provided on the side wall of the ratchet 2 away from the pawl 4, and the end of the torsion spring 5 is stuck in the mounting groove to avoid slipping and achieve reliable installation. A limiting claw 4a is provided on the side wall of the pawl 4 close to the ratchet 2, and the limiting claw 4a can engage with the gear ratchet 2a at different positions to achieve multiple gear adjustments; an unlocking rod 4b is provided on the end face of the pawl 4 close to the left bracket 9, and an unlocking protrusion 3b is provided on the side wall of the guide plate 3, and the unlocking rod 4b rests on the side wall of the unlocking protrusion 3b.

[0026] Combination Figures 2 to 7 It can be seen that: a limiting protrusion 2c is provided on the side wall of the ratchet 2, and when the ratchet 2 rotates forward so that the limiting protrusion 2c touches the side wall of the pawl 4, the driving rod 2b drives the guide piece 3 to rotate, and the unlocking protrusion 3b pushes the unlocking rod 4b to lift the pawl 4, and the unlocking rod 4b leans against the lower side wall of the unlocking protrusion 3b to realize the opening of the central armrest, at this time, the shift ratchet 2a is engaged with the limiting pawl 4a at the lowest position on the side wall of the ratchet 2; the ratchet 2 rotates reversely, and the pawl 4 is lifted so that the shift ratchet 2a is respectively engaged with multiple shift ratchets 2a on the side wall of the ratchet 2, and when the driving rod 2b touches the side wall of the arc-shaped guide groove 3a to drive the guide piece 3 to rotate, the unlocking protrusion 3b pushes the unlocking rod 4b to lift the pawl 4, and the unlocking rod 4b leans against the upper side wall of the unlocking protrusion 3b to realize the closing of the central armrest.

[0027] In order to more accurately adjust the position of the central armrest, the gear angle of the adjacent gear ratchet teeth 2a on the ratchet wheel 2 is 8°.

[0028] Figures 1 to 3Middle: A connecting piece 14 is installed on the outside of the ratchet 2 and the pawl 4, and the connecting piece 14 is fixed to the rotating shaft 1 and the intermediate shaft 11; a damping gasket 7 is installed on the intermediate shaft 11 outside the rotating shaft 1, and a step bolt 6 is installed on the outside of the damping gasket 7.

[0029] See also Figure 1 and Figure 4 : A limiting plate 12 is arranged on the right bracket 10, and the right end of the rotating shaft 1 is rotatably mounted on the limiting plate 12. An arc-shaped limiting groove 12a is opened on the limiting plate 12, and a limiting shaft 13 is fixed on the armrest frame 8 near the right bracket 10. The limiting shaft 13 extends into the arc-shaped limiting groove 12a, and the two ends of the arc-shaped limiting groove 12a can limit the opening and closing adjustment of the armrest frame 8.

[0030] The working process of the present invention is as follows:

[0031] 1. Opening: When the central armrest is opened and rotated, the ratchet 2 is connected to the rotating shaft 1 due to the spline, and rotates under the action of the rotating shaft 1. After the ratchet 2 rotates 93°, it drives the guide piece 3 to rotate, and the pawl 4 starts to slide along the contour curve of the guide piece 3. Finally, under the action of the torsion spring 5, the pawl 4 locks the ratchet 2 at the lowest position of the central armrest;

[0032] 2. When adjusting the gear: the rotating shaft 1 drives the ratchet 2 to rotate, and the pawl 4 slides along the contour of the ratchet 2. Under the action of the torsion spring 5, the gear adjustment lock of 8° is realized. This embodiment can adjust 3 gears, and the angle and number of gears can also be designed according to needs. At this time, the guide piece 3 is driven by the pawl 4 to rotate, and the damping gasket 7 is pressed by the step bolt 6 during the rotation to generate a damping force;

[0033] 3. Close: After the rotating shaft 1 drives the ratchet 2 to rotate 95°, the guide piece 3 is driven to rotate by the ratchet 2, and the pawl 4 begins to slide along the contour curve of the guide piece 3, and returns to the closed position after 25°, at which time a cycle ends; during the rotation process, the step bolt 6 presses the damping gasket 7 to generate a damping force.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A central armrest with adjustable angle, comprising an armrest frame (8), the rear portion of which is rotatably mounted between a left bracket (9) and a right bracket (10) via a rotating shaft (1), characterized in that: The left end of the rotating shaft (1) passes through the left bracket (9), and an angle adjustment mechanism is installed at the left end of the rotating shaft (1), and the angle adjustment mechanism is installed on the outside of the left bracket (9).

2. The angle-adjustable central armrest according to claim 1, characterized in that: The angle adjustment mechanism comprises a guide piece (3), a ratchet (2) and a ratchet pawl (4); the guide piece (3) is movably mounted on the rotating shaft (1); an arc-shaped guide groove (3a) is provided on the guide piece (3); the ratchet (2) is fixedly mounted on the rotating shaft (1); the ratchet (2) is located outside the guide piece (3); a plurality of gear ratchet teeth (2a) are distributed on the side wall of the ratchet (2); a driving rod (2b) is provided on the end surface of the ratchet (2) close to the guide piece (3); the outer end of the driving rod (2b) extends into the arc-shaped guide groove (3a); The pawl (4) is mounted on the left bracket (9) via an intermediate shaft (11). The pawl (4) is located on one side of the ratchet (2). A torsion spring (5) is mounted on the intermediate shaft (11) between the left bracket (9) and the pawl (4). One end of the torsion spring (5) is mounted on the left bracket (9), and the other end is against a side wall of the pawl (4) away from the ratchet (2). A limiting pawl (4a) is provided on a side wall of the pawl (4) close to the ratchet (2). The limiting pawl (4a) can mesh with the gear ratchet (2a) to achieve gear adjustment. An unlocking rod (4b) is arranged on the end surface of the ratchet (4) close to the left bracket (9), and an unlocking protrusion (3b) is arranged on the side wall of the guide piece (3), and the unlocking rod (4b) rests on the side wall of the unlocking protrusion (3b).

3. The angle-adjustable central armrest according to claim 2, characterized in that: A limiting protrusion (2c) is provided on the side wall of the ratchet (2). When the ratchet (2) rotates forward so that the limiting protrusion (2c) touches the side wall of the ratchet pawl (4), the driving rod (2b) drives the guide plate (3) to rotate, and the unlocking protrusion (3b) pushes the unlocking rod (4b) to lift the ratchet pawl (4). The unlocking rod (4b) leans against the lower side wall of the unlocking protrusion (3b) to open the central armrest. At this time, the gear ratchet (2a) is meshed with the limiting pawl (4a) at the lowest position on the side wall of the ratchet (2); The ratchet wheel (2) rotates in the opposite direction, and the pawl (4) is lifted so that the gear ratchet (2a) is respectively engaged with a plurality of gear ratchet teeth (2a) on the side wall of the ratchet wheel (2); when the driving rod (2b) touches the side wall of the arc-shaped guide groove (3a) to drive the guide plate (3) to rotate, the unlocking protrusion (3b) pushes the unlocking rod (4b) to lift the pawl (4), and the unlocking rod (4b) rests on the upper side wall of the unlocking protrusion (3b), thereby closing the central armrest.

4. The angle-adjustable central armrest according to claim 3, characterized in that: The gear angle of the adjacent gear ratchet teeth (2a) on the ratchet wheel (2) is 8°.

5. The angle-adjustable central armrest according to claim 1 or 2, characterized in that: A limiting plate (12) is arranged on the right bracket (10), the right end of the rotating shaft (1) is rotatably mounted on the limiting plate (12), an arc-shaped limiting groove (12a) is provided on the limiting plate (12), a limiting shaft (13) is fixed on the armrest frame (8) near the right bracket (10), the limiting shaft (13) extends into the arc-shaped limiting groove (12a), and the two ends of the arc-shaped limiting groove (12a) can limit the opening and closing adjustment of the armrest frame (8).

6. The angle-adjustable central armrest according to claim 2, characterized in that: A connecting piece (14) is installed on the outside of the ratchet (2) and the pawl (4), and the connecting piece (14) is fixed on the rotating shaft (1) and the intermediate shaft (11).

7. The angle-adjustable central armrest according to claim 6, characterized in that: A damping washer (7) is installed on the intermediate shaft (11) outside the rotating shaft (1), and a stepped bolt (6) is installed on the outside of the damping washer (7).

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