An angle-adjustable central armrest

Abstract

The application discloses an angle-adjustable central handrail, which comprises a handrail framework, the rear part of the handrail framework is rotatably arranged between a left support and a right support through a rotating shaft, the left end of the rotating shaft penetrates through the left support, and an angle adjusting mechanism is arranged at the left end of the rotating shaft, and the angle adjusting mechanism is arranged outside the left support. The angle adjusting mechanism is arranged, the angle of the central handrail can be adjusted according to the overturning condition of the backrest, and the comfort of passengers is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile seat armrests, in particular to an angle-adjustable central armrest. BACKGROUND

[0002] With the development of the automobile industry, people's demand for the comfort of operating and using automobiles is getting higher and higher. As an interior structural part for supporting the arms of passengers on the seat, the central armrest of the automobile is an important component for improving the comfort of passengers. A properly designed seat armrest can improve the comfort and safety of the automobile seat and the vehicle.

[0003] At present, passengers can adjust the seat back according to the comfort of sitting, and the armrest beside the seat can only be in two states of opening or closing. Since the existing rear central armrest of the automobile seat product is a non-gear adjustment armrest, the non-gear adjustment angle armrest cannot maintain a comfortable position when the seat back is turned over. Therefore, it is necessary to design a central armrest that can adaptively adjust the angle when the seat back is turned over. SUMMARY

[0004] To solve the above technical problems, the present application provides an angle-adjustable central armrest with gear adjustment.

[0005] The technical scheme is as follows: an angle-adjustable central armrest, comprising an armrest framework, the armrest framework being rotatably installed between a left support and a right support through a rotating shaft, and the key points are that: the left end of the rotating shaft passes through the left support, and an angle adjustment mechanism is installed at the left end of the rotating shaft, and the angle adjustment mechanism is installed on the outside of the left support. By setting the angle adjustment mechanism, the angle of the central armrest can be adjusted according to the turning of the seat back, thereby improving the comfort of passengers.

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

[0007] The pawl is installed on the left support through an intermediate shaft, the pawl is located on one side of the ratchet wheel, a torsional spring is sleeved on the intermediate shaft between the left support and the pawl, one end of the torsional spring is installed on the left support, the other end of the torsional spring abuts against the side wall of the pawl away from the ratchet wheel, a limiting pawl is arranged on the side wall of the pawl close to the ratchet wheel, and the limiting pawl can engage with the gear teeth to realize gear adjustment;

[0008] The end face of the pawl near the left support is provided with an unlocking rod, and the guide piece side wall is provided with an unlocking protrusion, and the unlocking rod is arranged on the unlocking protrusion side wall.

[0009] As preferred, the ratchet wheel side wall is provided with a limiting protrusion, when the ratchet wheel rotates forward and the limiting protrusion touches the pawl side wall, the driving rod drives the guide piece to rotate, the unlocking protrusion pushes the unlocking rod to lift the pawl, the unlocking rod is arranged on the unlocking protrusion lower side wall, the central handrail is opened, and the gear teeth are engaged with the limiting pawl in the lowest position of the ratchet wheel side wall.

[0010] The ratchet wheel rotates reversely, the pawl is lifted to make the gear teeth engage with the plurality of gear teeth on the ratchet wheel side wall, when the driving rod touches the arc-shaped guide groove side wall to drive the guide piece to rotate, the unlocking protrusion pushes the unlocking rod to lift the pawl, the unlocking rod is arranged on the unlocking protrusion upper side wall, and the central handrail is closed.

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

[0012] As preferred, the right support is provided with a limiting piece, the rotating shaft right end is rotatably arranged on the limiting piece, the limiting piece is provided with an arc-shaped limiting groove, the limiting shaft is fixed on the handrail framework near the right support, the limiting shaft extends into the arc-shaped limiting groove, and the arc-shaped limiting groove can limit the opening and closing adjustment of the handrail framework.

[0013] As preferred, the connecting piece is arranged outside the ratchet wheel and the pawl, and the connecting piece is fixed on the rotating shaft and the intermediate shaft.

[0014] As preferred, the damping washer is arranged on the intermediate shaft outside the rotating shaft, and the stepped bolt is arranged outside the damping washer.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: 1. With the change of the angle of the backrest, the central handrail can realize angle adjustment, and is more suitable for comfort requirements; 2. The structure is simple, and the space requirement is small; 3. The mechanism has high universality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of a closing position of the present application.

[0017] Figure 2 It is a structure schematic view of a closing position of the present application. Figure 1 It is a structure schematic view of a closing position of the present application.

[0018] Figure 3 It is an explosion view of the present application. Figure 2 ​

[0019] Figure 4 Structure diagram of the invention opened to the lowest position;

[0020] Figure 5 Structure diagram of the engagement of the ratchet wheel 2 and the pawl 4 in the first gear of the invention;

[0021] Figure 6 Structure diagram of the engagement of the ratchet wheel 2 and the pawl 4 in the second gear of the invention;

[0022] Figure 7 Structure diagram of the engagement of the ratchet wheel 2 and the pawl 4 in the third gear of the invention. DETAILED DESCRIPTION

[0023] The invention is further illustrated below in conjunction with the embodiments and the accompanying drawings.

[0024] As Figures 1 to 7 shown, an angle-adjustable central armrest is composed of armrest framework 8, left support 9 and right support 10, etc., wherein the structure of the armrest framework 8 is the prior art and is not described here in detail, the rear part of the armrest framework 8 is rotatably installed between the left support 9 and the right support 10 via a rotating shaft 1, the left end of the rotating shaft 1 passes through the left support 9, and an angle-adjusting mechanism is installed at the left end of the rotating shaft 1, the angle-adjusting mechanism being installed outside the left support 9.

[0025] In combination Figure 1 , Figure 2 and Figure 3It can be seen that the angle adjusting mechanism comprises a guide piece 3, a ratchet wheel 2 and a pawl 4, the guide piece 3 is sleeved on the rotating shaft 1, an arc-shaped guide groove 3a is formed in the guide piece 3, the ratchet wheel 2 is fixedly sleeved on the rotating shaft 1 and located outside the guide piece 3, a plurality of stop ratchet teeth 2a are distributed on the side wall of the ratchet wheel 2, a driving rod 2b is arranged on the end face of the ratchet wheel 2 close to the guide piece 3, and the outer end of the driving rod 2b extends into the arc-shaped guide groove 3a; the pawl 4 is installed on the left support 9 through an intermediate shaft 11, the pawl 4 is located on one side of the ratchet wheel 2, a torsion spring 5 is sleeved on the intermediate shaft 11 between the left support 9 and the pawl 4, one end of the torsion spring 5 is installed on the left support 9, that is, an installation hole is formed in the left support 9, one end of the torsion spring 5 penetrates through the installation hole, and the other end of the torsion spring 5 abuts against the side wall of the pawl 4 away from the ratchet wheel 2, specifically, an installation groove is formed in the side wall of the ratchet wheel 2 away from the pawl 4, the end of the torsion spring 5 is clamped in the installation groove, so that the reliable installation is realized and the slipping is avoided, a limiting pawl 4a is arranged on the side wall of the pawl 4 close to the ratchet wheel 2, the limiting pawl 4a can be engaged with the stop ratchet teeth 2a at different positions, and a plurality of stop position adjustments are realized; an unlocking rod 4b is arranged on the end face of the pawl 4 close to the left support 9, and an unlocking protrusion 3b is arranged on the side wall of the guide piece 3, and the unlocking rod 4b abuts against the side wall of the unlocking protrusion 3b.

[0026] In combination Figures 2 to 7 It can be seen that the side wall of the ratchet wheel 2 is provided with a limiting protrusion 2c, when the limiting protrusion 2c touches the side wall of the pawl 4 during the forward rotation of the ratchet wheel 2, the driving rod 2b drives the guide piece 3 to rotate, the unlocking protrusion 3b pushes the unlocking rod 4b to lift the pawl 4, the unlocking rod 4b abuts against the lower side wall of the unlocking protrusion 3b, the central handrail is opened, at this time, the stop ratchet teeth 2a are engaged with the limiting pawl 4a at the lowest position on the side wall of the ratchet wheel 2; during the reverse rotation of the ratchet wheel 2, the pawl 4 is lifted, so that the stop ratchet teeth 2a are respectively engaged with a plurality of stop 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 piece 3 to rotate, the unlocking protrusion 3b pushes the unlocking rod 4b to lift the pawl 4, and the unlocking rod 4b abuts against the upper side wall of the unlocking protrusion 3b, so that the central handrail is closed.

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

[0028] Figures 1 to 3The connecting plate 14 is fixed on the rotating shaft 1 and the intermediate shaft 11 outside the ratchet wheel 2 and the pawl 4; the damping washer 7 is installed on the intermediate shaft 11 outside the rotating shaft 1, and the stepped bolt 6 is installed outside the damping washer 7.

[0029] Please refer to Figure 1 and Figure 4 The limiting plate 12 is arranged on the right support 10, the rotating shaft 1 is rotatably arranged on the limiting plate 12, the arc-shaped limiting groove 12a is arranged on the limiting plate 12, the limiting shaft 13 is fixed on the right support 10 close to the handrail framework 8, 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 handrail framework 8.

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

[0031] 1. Opening: when the central handrail is opened and rotated, the ratchet wheel 2 is connected with the rotating shaft 1 through the spline, and rotates under the action of the rotating shaft 1; the ratchet wheel 2 rotates 93° and drives the guide plate 3 to rotate, the pawl 4 starts to slide along the contour curve of the guide plate 3, and finally falls into the ratchet wheel 2 under the action of the torsional spring 5 to lock the pawl 4 at the lowest position of the central handrail.

[0032] 2. Adjusting: the rotating shaft 1 drives the ratchet wheel 2 to rotate, the pawl 4 slides along the contour of the ratchet wheel 2, and the 8°-notch adjustment locking is realized under the action of the torsional spring 5; the guide plate 3 is pushed to rotate by the pawl 4, and the damping force is generated by the stepped bolt 6 pressing the damping washer 7 during the rotating process.

[0033] 3. Closing: the rotating shaft 1 drives the ratchet wheel 2 to rotate 95°, the guide plate 3 is driven to rotate by the ratchet wheel 2, the pawl 4 starts to slide along the contour curve of the guide plate 3, and returns to the closed position after 25°, and one cycle is completed; the damping force is generated by the stepped bolt 6 pressing the damping washer 7 during the rotating process.

[0034] Finally, it should be noted that the above description is only for the preferred embodiments of the present application, and those skilled in the art can make various similar modifications under the inspiration of the present application without deviating from the purpose and claims of the present application, and such modifications fall within the protection scope of the present application.

Claims

1. An angle-adjustable central handrail, comprising a handrail framework (8) which is rotatably mounted between a left support (9) and a right support (10) by a rotation shaft (1) at the rear part, characterized in that: The left end of the rotating shaft (1) penetrates through the left support (9), and an angle adjusting mechanism is installed at the left end of the rotating shaft (1), which is installed outside the left support (9); The angle adjusting mechanism comprises a guide piece (3), a ratchet wheel (2) and a pawl (4), the guide piece (3) is sleeved on the rotating shaft (1), an arc-shaped guide groove (3a) is formed in the guide piece (3), the ratchet wheel (2) is fixedly sleeved on the rotating shaft (1) and located outside the guide piece (3), a plurality of stop ratchet teeth (2a) are distributed on the side wall of the ratchet wheel (2), and a driving rod (2b) is arranged on the end face of the ratchet wheel (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 support (9) through an intermediate shaft (11), the pawl (4) is located on one side of the ratchet wheel (2), a torsion spring (5) is sleeved on the intermediate shaft (11) between the left support (9) and the pawl (4), one end of the torsion spring (5) is installed on the left support (9), and the other end is arranged on the side wall of the pawl (4) away from the ratchet wheel (2), specifically, an installation groove is formed in the side wall of the ratchet wheel (2) away from the pawl (4), the end of the torsion spring (5) is clamped in the installation groove, a limiting pawl (4a) is arranged on the side wall of the pawl (4) close to the ratchet wheel (2), the limiting pawl (4a) can be engaged with the stop ratchet teeth (2a), and stop adjustment is realized; An unlocking rod (4b) is arranged on the end face of the pawl (4) close to the left support (9), and an unlocking protrusion (3b) is arranged on the side wall of the guide piece (3).

2. An angle adjustable central armrest according to claim 1, characterized in that: A limiting protrusion (2c) is arranged on the side wall of the ratchet wheel (2), when the limiting protrusion (2c) touches the side wall of the pawl (4) during forward rotation of the ratchet wheel (2), the driving rod (2b) drives the guide piece (3) to rotate, the unlocking protrusion (3b) pushes the unlocking rod (4b) to lift the pawl (4), the unlocking rod (4b) is arranged on the lower side wall of the unlocking protrusion (3b), the central armrest is opened, and at this time, the stop ratchet teeth (2a) are engaged with the limiting pawl (4a) in the lowest position on the side wall of the ratchet wheel (2); During reverse rotation of the ratchet wheel (2), the pawl (4) is lifted, so that the stop ratchet teeth (2a) are respectively engaged with a plurality of stop 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 piece (3) to rotate, the unlocking protrusion (3b) pushes the unlocking rod (4b) to lift the pawl (4), the unlocking rod (4b) is arranged on the upper side wall of the unlocking protrusion (3b), and the central armrest is closed.

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

4. An angle adjustable central handrail according to claim 1, characterized in that: The right support (10) is provided with a limiting sheet (12), the right end of the rotating shaft (1) is rotatably installed on the limiting sheet (12), the limiting sheet (12) is provided with an arc-shaped limiting slot (12a), a limiting shaft (13) is fixed on the right support (10) close to the handrail framework (8), the limiting shaft (13) extends into the arc-shaped limiting slot (12a), and the two ends of the arc-shaped limiting slot (12a) can limit the opening and closing adjustment of the handrail framework (8).

5. An angle adjustable central handrail according to claim 1, characterized in that: A connecting sheet (14) is installed outside the ratchet wheel (2) and the pawl (4), and the connecting sheet (14) is fixed on the rotating shaft (1) and the intermediate shaft (11).

6. An angle adjustable central armrest according to claim 5, 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 outside the damping washer (7).

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