Seat armrest structure

Abstract

The utility model relates to a seat armrest structure which comprises a backrest framework metal plate, a backrest angle adjuster, a linkage angle adjuster, a backrest synchronizing rod, an armrest synchronizing rod and a synchronizing mechanism, the backrest angle adjuster and the linkage angle adjuster are installed on the backrest framework metal plate in a spaced mode, and the installation directions of the backrest angle adjuster and the linkage angle adjuster are the same. The backrest synchronizing rod is inserted into the backrest angle adjuster to be in transmission connection with the backrest angle adjuster, the armrest synchronizing rod is inserted into the linkage angle adjuster to be in transmission connection with the linkage angle adjuster, and the synchronizing mechanism is connected between the backrest synchronizing rod and the armrest synchronizing rod to achieve synchronization of the backrest synchronizing rod and the armrest synchronizing rod. According to the seat armrest structure disclosed by the utility model, the requirement of larger-angle folding can be met, the armrest is always kept horizontal when the backrest is adjusted, and the seat armrest structure is simple in structure, small in occupied space and good in stability.

Description

Technical Field

[0001] This utility model relates to vehicles, and more specifically to a seat armrest structure. Background Technology

[0002] The armrest is rotatably mounted on the back of the vehicle seat. Occupants can place their arms or elbows on the armrest and adjust its position as needed. Additionally, passengers can flip the armrest upwards to increase space on the sides of the seat and facilitate passenger entry and exit.

[0003] When a passenger is seated, their upper torso is upright, and the armrests are horizontal, which is ergonomic. However, when the seat reclines, the passenger's upper torso is in a lying position, and the armrests are fixed upwards relative to the backrest, making the experience awkward. Furthermore, since existing armrest mechanisms can only rotate a maximum of 120°, passengers often cannot adjust them to an ergonomically horizontal position by simply rotating them.

[0004] To address this issue, some complex solutions with numerous components have been identified. These solutions not only occupy a large amount of space but also suffer from poor stability due to issues such as commutation gaps. Utility Model Content

[0005] To address the problems of armrest warping and poor stability in the existing technology, this utility model provides a seat armrest structure.

[0006] According to the present invention, the seat armrest structure includes a backrest frame sheet metal, a backrest angle adjuster, a linkage angle adjuster, a backrest synchronizing rod, an armrest synchronizing rod, and a synchronizing mechanism. The backrest angle adjuster and the linkage angle adjuster are installed on the backrest frame sheet metal at intervals and in the same direction. The backrest synchronizing rod is inserted into the backrest angle adjuster for transmission connection, and the armrest synchronizing rod is inserted into the linkage angle adjuster for transmission connection. The synchronizing mechanism is connected between the backrest synchronizing rod and the armrest synchronizing rod to achieve synchronization between the backrest synchronizing rod and the armrest synchronizing rod.

[0007] Preferably, the synchronization mechanism includes a backrest synchronizer wheel, a synchronizer belt, and an armrest synchronizer wheel. The backrest synchronizer wheel is mounted on the shaft of the backrest synchronizer rod, the armrest synchronizer wheel is mounted on the shaft of the armrest synchronizer rod, and the synchronizer belt is mounted between the backrest synchronizer wheel and the armrest synchronizer wheel, thereby enabling the backrest synchronizer wheel and the armrest synchronizer wheel to rotate synchronously.

[0008] Preferably, the backrest synchronous wheel and the armrest synchronous wheel are synchronous wheels of the same size, and the backrest angle adjuster and the linkage angle adjuster are angle adjusters of the same model to perform synchronous adjustment.

[0009] Preferably, the backrest synchronizer and the armrest synchronizer are synchronizer wheels of different sizes, and the backrest angle adjuster and the linkage angle adjuster are angle adjusters of different models, so as to make synchronous adjustments.

[0010] Preferably, both the backrest synchronous pulley and the armrest synchronous pulley are belt pulleys with transmission teeth, and the synchronous belt is a belt with teeth that mesh with the transmission teeth.

[0011] Preferably, the synchronization mechanism further includes a cover, in which the backrest synchronization wheel, synchronization belt and armrest synchronization wheel are housed and mounted on the backrest frame sheet metal through the cover.

[0012] Preferably, the seat armrest structure further includes an armrest connecting plate and an armrest mechanism, wherein the armrest mechanism is connected to the linkage adjuster through the armrest connecting plate.

[0013] Preferably, the handrail mechanism further includes a handrail shaft, a handrail angle adjuster, and a handrail, wherein the handrail shaft is connected to the linkage angle adjuster through a handrail connecting plate, and the handrail is mounted on the handrail shaft through the handrail angle adjuster.

[0014] Preferably, the backrest synchronization rod and the armrest synchronization rod are arranged in parallel.

[0015] Preferably, the seat armrest structure also includes a backrest motor, which is mounted on the backrest frame sheet metal and connected to the backrest synchronization rod to drive the backrest synchronization rod.

[0016] Preferably, the seat armrest structure also includes a seat frame connecting bracket, and the backrest frame sheet metal is rotatably mounted on the seat frame connecting bracket via a backrest angle adjuster to achieve seat back folding.

[0017] Preferably, the backrest adjuster and the linkage adjuster each include an inner gear plate that rolls within the outer gear plate. The outer gear plate of the backrest adjuster is fixed to the seat frame connecting bracket, and the inner gear plate of the backrest adjuster is fixed to the backrest frame sheet metal. The outer gear of the linkage adjuster is fixed to the armrest mechanism, and the inner gear plate of the linkage adjuster is fixed to the backrest frame sheet metal. It should be understood that it is also feasible to have the outer gear plate of the backrest adjuster fixed to the backrest frame sheet metal, the inner gear plate of the backrest adjuster fixed to the seat frame connecting bracket, the outer gear of the linkage adjuster fixed to the backrest frame sheet metal, and the inner gear plate of the linkage adjuster fixed to the armrest mechanism.

[0018] The armrest structure of this utility model can meet the requirements of larger folding angles. The armrest remains horizontal when the backrest is adjusted. Moreover, the structure is simple, occupies little space, and has good stability. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a seat armrest structure according to a preferred embodiment of the present invention.

[0020] Figure 2 yes Figure 1 A schematic diagram from another angle.

[0021] Figure 3 yes Figure 1 A partial structural diagram.

[0022] Figure 4 yes Figure 3 A schematic diagram from another angle.

[0023] Figure 5 yes Figure 3 Exploded view.

[0024] Figure 6 yes Figure 1 A variant of .

[0025] Figure 7 This is a structural schematic diagram of a seat armrest structure according to another preferred embodiment of the present invention.

[0026] Figure 8 yes Figure 7 A schematic diagram from another angle.

[0027] Figure 9 yes Figure 7 A partial structural diagram.

[0028] Figure 10 yes Figure 9 A schematic diagram from another angle.

[0029] Figure 11 yes Figure 9 Exploded view.

[0030] Figure 12 Show Figure 8 A variant of . Detailed Implementation

[0031] The preferred embodiments of this utility model are given below with reference to the accompanying drawings and described in detail.

[0032] like Figures 1-2 As shown, a preferred embodiment of the seat armrest structure according to the present invention includes a backrest frame sheet metal A, a seat basin frame connecting bracket B, and a backrest angle adjuster 3. The bottom of the backrest frame sheet metal A is rotatably mounted on the seat basin frame connecting bracket B through the backrest angle adjuster 3, thereby adjusting the angle of the backrest frame sheet metal A relative to the seat basin frame connecting bracket B through the backrest angle adjuster 3, and realizing the folding of the seat back.

[0033] like Figures 1-2As shown, the seat armrest structure according to this embodiment also includes a backrest motor 1 and a backrest synchronizing rod 2. The backrest synchronizing rod 2 passes through the bottom of the backrest frame sheet metal A in a horizontal direction and extends into the backrest adjuster 3 to achieve a transmission connection. The backrest motor 1 is installed on the backrest frame sheet metal A and connected to the backrest synchronizing rod 2 to drive the backrest synchronizing rod 2, thereby driving the backrest to fold through the backrest motor 1.

[0034] like Figures 1-5 As shown, the armrest structure according to this embodiment also includes an armrest synchronizing rod 7 and a linkage adjuster 8. The linkage adjuster 8 and the backrest adjuster 3 are identical in model. The linkage adjuster 8 is installed in the middle of the backrest frame sheet metal A, and its installation direction is the same as that of the backrest adjuster 3. The armrest synchronizing rod 7 passes horizontally into the linkage adjuster 8 to achieve a transmission connection. It should be understood that the fact that the linkage adjuster 8 and the backrest adjuster 3 are identical in model in this embodiment is merely an example and not a limitation. Depending on the transmission ratio, they can also be two different adjusters.

[0035] like Figures 1-5 As shown, the seat armrest structure according to this embodiment also includes a synchronization mechanism C, which is connected between the backrest synchronization rod 2 and the armrest synchronization rod 7 and includes a backrest synchronization wheel 4, a synchronization belt 5, and an armrest synchronization wheel 6. The backrest synchronization wheel 4 and the armrest synchronization wheel 6 are synchronization wheels of identical size. The backrest synchronization wheel 4 is mounted on the shaft of the backrest synchronization rod 2, and the armrest synchronization wheel 6 is mounted on the shaft of the armrest synchronization rod 7. The backrest synchronization wheel 4 is positioned below the armrest synchronization wheel 6. The synchronization belt 5 is connected between the backrest synchronization wheel 4 and the armrest synchronization wheel 6, thereby enabling synchronous rotation between the backrest synchronization wheel 4 and the armrest synchronization wheel 6 and achieving a transmission connection between the backrest synchronization rod 2 and the armrest synchronization rod 7. It should be understood that the fact that the backrest synchronization wheel 4 and the armrest synchronization wheel 6 are synchronization wheels of identical size in this embodiment is merely an example and not a limitation; they could also be two different synchronization wheels.

[0036] like Figures 1-5 As shown, the seat armrest structure according to this embodiment further includes an armrest connecting plate 9 and an armrest mechanism 10, wherein the armrest mechanism 10 is connected to the linkage adjuster 8 via the armrest connecting plate 9. Additionally, the seat armrest structure according to this embodiment also includes a thrust cap 11, which is installed at the end of the armrest synchronization rod 7 to prevent detachment. It should be understood that... Figures 1-5 The handrail mechanism 10 is a known handrail angle adjuster. The handrail is properly installed via the handrail angle adjuster, and the original handrail mechanism's comfort adjustment functions, such as suspension, can be retained. In such cases... Figure 6In one variant shown, the armrest mechanism includes an armrest 10a and an armrest adjuster 10b, with the armrest adjuster 10b reversed. The armrest 10a is mounted in reverse via the armrest adjuster 10b, and this configuration is equally applicable. It should be understood that although the installation direction of the linkage adjuster 8 is the same as that of the backrest adjuster 3, their actual fixed positions are different. For example, adjusters 3 and 8 each include an inner gear plate that rolls within an outer gear plate. The outer gear plate of the backrest adjuster 3 is welded to the seat frame connecting bracket B, and the inner gear plate of the backrest adjuster 3 is welded to the backrest frame sheet metal A. Meanwhile, the outer gear of the linkage adjuster 8 is welded to the armrest mechanism 10, and the inner gear plate of the linkage adjuster 8 is welded to the backrest frame sheet metal A. Conversely, the outer tooth plate of the backrest adjuster 3 is welded and fixed to the backrest frame sheet metal A, the inner tooth plate of the backrest adjuster 3 is welded and fixed to the seat frame connecting bracket B, and the outer gear of the linkage adjuster 8 is welded and fixed to the backrest frame sheet metal A, and the inner tooth plate of the linkage adjuster 8 is welded and fixed to the armrest mechanism 10.

[0037] In this embodiment, through the synchronization mechanism C, a portion of the power output from the backrest motor 1 is sent to the linkage adjuster 8, thereby driving the armrest mechanism 10 to move. Since the upper and lower synchronization wheels (i.e., the backrest synchronization wheel 4 and the armrest synchronization wheel 6) are exactly the same size, and the upper and lower adjustment mechanisms (i.e., the backrest adjustment mechanism 3 and the linkage adjustment mechanism 8) are exactly the same model, the rotation angle of the backrest frame sheet metal A is the same as the rotation angle of the armrest mechanism 10, maintaining synchronization. This ensures that when the backrest frame sheet metal A rotates forward, the armrest mechanism 10 rotates upward; and when the backrest frame sheet metal A rotates backward, the armrest mechanism 10 rotates downward, ensuring that the armrest is always horizontal relative to the horizontal plane. It should be understood that in embodiments where the backrest adjustment mechanism 3 and the linkage adjustment mechanism 8 are different models, and the backrest synchronization wheel 4 and the armrest synchronization wheel 6 have different sizes, by setting the transmission ratio of the upper and lower synchronization wheels, the rotation angle of the backrest frame sheet metal A can be made the same as the rotation angle of the armrest mechanism 10, maintaining synchronization.

[0038] like Figures 7-8 As shown, according to another preferred embodiment of the present invention, the seat armrest structure includes a backrest frame sheet metal A, a seat basin frame connecting bracket B, and a backrest angle adjuster 3. The bottom of the backrest frame sheet metal A is rotatably mounted on the seat basin frame connecting bracket B through the backrest angle adjuster 3, thereby adjusting the angle of the backrest frame sheet metal A relative to the seat basin frame connecting bracket B through the backrest angle adjuster 3, and realizing the folding of the seat back.

[0039] like Figures 7-8As shown, the seat armrest structure according to this embodiment also includes a backrest motor 1 and a backrest synchronizing rod 2. The backrest synchronizing rod 2 passes through the bottom of the backrest frame sheet metal A in a horizontal direction and extends into the backrest adjuster 3 to achieve a transmission connection. The backrest motor 1 is installed on the backrest frame sheet metal A and connected to the backrest synchronizing rod 2 to drive the backrest synchronizing rod 2, thereby driving the backrest to fold through the backrest motor 1.

[0040] like Figures 7-11 As shown, the seat armrest structure according to this embodiment also includes an armrest synchronizing rod 7 and a linkage adjuster 8. The linkage adjuster 8 and the backrest adjuster 3 are adjusters of the same model. The linkage adjuster 8 is installed in the middle of the backrest frame sheet metal A and its installation direction is the same as that of the backrest adjuster 3. The armrest synchronizing rod 7 passes through the linkage adjuster 8 in the horizontal direction to achieve a transmission connection with it.

[0041] like Figures 7-11 As shown, the armrest structure according to this embodiment further includes a synchronization mechanism C, which is connected between the backrest synchronization rod 2 and the armrest synchronization rod 7 and includes a backrest synchronization wheel 4, a synchronization belt 5, and an armrest synchronization wheel 6. The backrest synchronization wheel 4 and the armrest synchronization wheel 6 are synchronization wheels of identical size. The backrest synchronization wheel 4 is mounted on the shaft of the backrest synchronization rod 2, and the armrest synchronization wheel 6 is mounted on the shaft of the armrest synchronization rod 7. The backrest synchronization wheel 4 is positioned below the armrest synchronization wheel 6. The synchronization belt 5 is mounted between the backrest synchronization wheel 4 and the armrest synchronization wheel 6, enabling synchronous rotation between them and achieving a transmission connection between the backrest synchronization rod 2 and the armrest synchronization rod 7. In this embodiment, both the backrest synchronization wheel 4 and the armrest synchronization wheel 6 are pulleys with transmission teeth. The synchronization belt 5 is a belt with teeth that mesh with the transmission teeth. It should be understood that the form of the backrest synchronizer 4 and the armrest synchronizer 6 is not limited to this; both can be gears, and the synchronizer belt 5 can be a chain, etc., which will not be elaborated further here. It should be understood that the synchronizer belt 5 can be a V-belt, a flat belt, a synchronous belt, and an O-belt, etc., which will not be elaborated further here. In this embodiment, the synchronization mechanism C also includes a cover C1, in which the backrest synchronizer 4, the synchronizer belt 5, and the armrest synchronizer 6 are housed, mounted on the backrest frame sheet metal A through the cover C1.

[0042] like Figures 7-11As shown, the seat armrest structure according to this embodiment further includes an armrest connecting plate 9 and an armrest mechanism 10, wherein the armrest mechanism 10 is connected to the linkage adjuster 8 via the armrest connecting plate 9. Additionally, the seat armrest structure according to this embodiment also includes a thrust cap 11, which is installed at the end of the armrest synchronization rod 7 to prevent detachment. In this embodiment, the armrest mechanism 10 includes an armrest shaft, an armrest adjuster, and an armrest, wherein the armrest shaft is connected to the linkage adjuster 8 via the armrest connecting plate 9, and the armrest is mounted on the armrest shaft via the armrest adjuster. Thus, the armrest can be manually adjusted and can be quickly folded up. It should be understood that if the armrest is directly connected to the linkage adjuster 8 via the armrest connecting plate 9, it achieves a function similar to a fixed large armrest.

[0043] In this embodiment, through the synchronization mechanism C, a portion of the power output from the backrest motor 1 is sent to the linkage angle adjuster 8, thereby driving the armrest mechanism 10 to move. Since the upper and lower synchronization wheels (i.e., the backrest synchronization wheel 4 and the armrest synchronization wheel 6) are exactly the same size, and the upper and lower angle adjusters (i.e., the backrest angle adjuster 3 and the linkage angle adjuster 8) are exactly the same model, the rotation angle of the backrest frame sheet metal A is the same as the rotation angle of the armrest mechanism 10, maintaining synchronization. Thus, when the backrest frame sheet metal A rotates forward, the armrest mechanism 10 rotates upward; when the backrest frame sheet metal A rotates backward, the armrest mechanism 10 rotates downward, ensuring that the armrest is always horizontal relative to the horizontal plane.

[0044] like Figure 12 As shown, in one variant, the other handrail can share a transmission mechanism with the handrail mechanism 10, and the linkage is achieved through the flexible shaft D.

[0045] According to the seat armrest structure of this utility model, when a passenger needs to recline the seat back, i.e., the entire backrest frame sheet metal A rotates backward, the backrest motor 1 is energized, driving the backrest synchronizer 2 to rotate. The backrest synchronizer 2 drives the backrest angle adjuster 3 to move, and the backrest angle adjuster 3 drives the backrest frame sheet metal A to rotate backward, thus enabling the seat back to rotate backward. During this process, the backrest synchronizer 2 drives the backrest synchronizer wheel 4 mounted on its shaft to rotate, and through the transmission of the synchronizer belt 5, the armrest synchronizer wheel 6 rotates synchronously. The armrest synchronizer wheel 6 then drives the armrest synchronizer 1 again. 7 and the linkage angle adjuster 8 rotate, and the linkage angle adjuster 8 rotates in the opposite direction to the backrest angle adjuster 3, so that the armrest mechanism 10 can rotate in the opposite direction to the rotation direction of the seat back. The armrest mechanism 10 moves downward as a whole so that it is generally kept in a horizontal state, thereby realizing the linkage between the seat back and the armrest, and the two can rotate in opposite directions, so that the seat posture adjustment conforms to the ergonomic characteristics, the action is consistent, the structure is compact and simple, and the safety of riding can be improved, ensuring that the passenger always has a relatively comfortable riding state during the seat back posture adjustment process.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various variations can be made to the above embodiments of this utility model. That is, all simple and equivalent changes and modifications made based on the claims and description of this utility model application fall within the protection scope of the claims of this utility model patent. Any aspects of this utility model not described in detail are conventional technical content.

Claims

1. A seat arm structure, characterized by, The seat armrest structure includes a backrest frame sheet metal, a backrest angle adjuster, a linkage angle adjuster, a backrest synchronizing rod, an armrest synchronizing rod, and a synchronizing mechanism. The backrest angle adjuster and the linkage angle adjuster are installed on the backrest frame sheet metal at intervals and in the same direction. The backrest synchronizing rod is inserted into the backrest angle adjuster for transmission connection, and the armrest synchronizing rod is inserted into the linkage angle adjuster for transmission connection. The synchronizing mechanism is connected between the backrest synchronizing rod and the armrest synchronizing rod to achieve synchronization between the backrest synchronizing rod and the armrest synchronizing rod.

2. The armrest structure of claim 1, wherein The synchronization mechanism includes a backrest synchronizer pulley, a synchronizer belt, and an armrest synchronizer pulley. The backrest synchronizer pulley is mounted on the shaft of the backrest synchronizer rod, the armrest synchronizer pulley is mounted on the shaft of the armrest synchronizer rod, and the synchronizer belt is connected between the backrest synchronizer pulley and the armrest synchronizer pulley, thereby enabling the backrest synchronizer pulley and the armrest synchronizer pulley to rotate synchronously.

3. The armrest structure of claim 2, wherein The backrest and armrest synchronized wheels are synchronized wheels of the same size, and the backrest angle adjuster and the linkage angle adjuster are angle adjusters of the same model to make synchronous adjustments.

4. The armrest structure of claim 2, wherein The backrest synchronizer and armrest synchronizer are synchronizer wheels of different sizes, and the backrest angle adjuster and linkage angle adjuster are angle adjusters of different models, in order to make synchronous adjustments.

5. The armrest structure of claim 2, wherein Both the backrest synchronous pulley and the armrest synchronous pulley are belt pulleys with transmission teeth on them. The synchronous belt is a belt with teeth on it that mesh with the transmission teeth.

6. The armrest structure of claim 2, wherein The synchronization mechanism also includes a cover, in which the backrest synchronization wheel, synchronization belt and armrest synchronization wheel are housed and mounted on the backrest frame sheet metal through the cover.

7. The armrest structure of claim 1, wherein The seat armrest structure also includes an armrest connecting plate and an armrest mechanism, wherein the armrest mechanism is connected to the linkage adjuster through the armrest connecting plate.

8. The armrest structure of claim 7, wherein, The handrail mechanism also includes a handrail shaft, a handrail angle adjuster, and a handrail. The handrail shaft is connected to the linkage angle adjuster via a handrail connecting plate, and the handrail is mounted on the handrail shaft via the handrail angle adjuster.

9. The armrest structure of claim 1, wherein The backrest synchronization rod and the armrest synchronization rod are set in parallel.

10. The armrest structure of claim 1, wherein The seat armrest structure also includes a backrest motor, which is mounted on the sheet metal of the backrest frame and connected to the backrest synchronization rod to drive the backrest synchronization rod.

11. The armrest structure of claim 7, wherein The seat armrest structure also includes a seat frame connecting bracket, and the backrest frame sheet metal is rotatably mounted on the seat frame connecting bracket via a backrest angle adjuster to achieve seat back folding.

12. The armrest structure of claim 11, wherein The backrest angle adjuster and the linkage angle adjuster each include an inner gear plate that rolls in the outer gear plate. The outer gear plate of the backrest angle adjuster is fixed to the seat frame connecting bracket, and the inner gear plate of the backrest angle adjuster is fixed to the backrest frame sheet metal. The outer gear of the linkage angle adjuster is fixed to the armrest mechanism, and the inner gear plate of the linkage angle adjuster is fixed to the backrest frame sheet metal.

Images