A type of seat armrest with adjustable armrest height

Abstract

An adjustable armrest for seats includes an armrest bar and an armrest base. The armrest base is equipped with a linkage mechanism that allows the armrest bar to swing relative to the armrest base and stop at any swing position. The linkage mechanism is connected to the swing base. A rotation adjustment mechanism is provided on the swing base to enable the armrest bar to swing and stop at any swing position. The armrest bar is connected to the rotation adjustment mechanism. The application method includes the following steps: pushing a first swing bar to swing, causing the swing base to move up and down relative to the armrest base, thus rotating the armrest bar to a suitable angle; fine-tuning the first swing bar to move the swing base to a suitable height, thereby completing the adjustment of the armrest bar's height and angle. The advantages of this invention are: the angle adjustment and height adjustment of the armrest bar are independent and do not interfere with each other; the height adjustment of the armrest bar allows for greater user comfort.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat armrest manufacturing technology, and more particularly to a seat armrest with adjustable armrest height. Background Technology

[0002] A Chinese utility model patent with application number CN202320276639.7, entitled "A Locking Device for an Automobile Seat Armrest," discloses a locking device for an automobile seat armrest, comprising an inner cover, a fixing ratchet ring, an outer cover, a rotating shaft, a labyrinth limiting member, and an active disc. The active disc is provided with a locking ratchet plate, which has external ratchet teeth. The fixing ratchet ring has a transition hole, and the inner wall of the transition hole has internal ratchet teeth that can engage with the external ratchet teeth. A ratchet spring is provided between the locking ratchet plate and the active disc to drive the locking ratchet plate to rotate. A limiting post is provided on the locking ratchet plate, and the labyrinth limiting member has a labyrinth groove for the limiting post to pass through the transition hole and extend into. One end of the labyrinth groove is configured as a limiting post recess, and the limiting post recess and the labyrinth groove are connected by a transition groove, with the width of the transition groove and the limiting post having an interference fit. The armrest not only provides support by suspending itself in mid-air above the seat, but also remains stable to the side of the seat after being rotated, facilitating passenger entry and exit. However, the armrest can only be adjusted in angle and not in height when it is horizontal, therefore its structure requires further improvement. Summary of the Invention

[0003] The first technical problem to be solved by this utility model is to provide a seat armrest that can be adjusted in height while maintaining a horizontal position, in view of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a seat armrest with adjustable armrest height, including an armrest bar and an armrest seat, characterized in that: the armrest seat is provided with a linkage mechanism that can swing relative to the armrest seat and stop at any position reached by the swing, the linkage mechanism is connected to the swing seat, and the swing seat is provided with a rotation adjustment mechanism that can realize the swing of the armrest bar and stop the armrest bar at any position reached by the swing, the armrest bar is connected to the rotation adjustment mechanism.

[0005] As an improvement, the linkage mechanism can preferably include two swing rods. One end of each swing rod is movably connected to the armrest seat via a first set of clamping members, and the other end of each swing rod is movably connected to the swing base via a second set of clamping members. The four rotational connection points of the armrest seat, the two swing rods, and the swing base form a parallelogram. A limiting protrusion is provided on the armrest seat to restrict further swinging of the swing rods. The structure is simple and enables height adjustment of the armrest.

[0006] Further improvements include a bottom connection between the first swing arm and the armrest seat via a first rotating shaft. A lower protrusion is provided on the first swing arm located below the first rotating shaft. This lower protrusion includes a first limiting protrusion below the first rotating shaft and a second limiting protrusion above the first rotating shaft. When the swing arm reaches its highest position, the lower protrusion of the swing arm contacts the first limiting protrusion. This provides better limiting effect and enhances safety.

[0007] In a further improvement, the sidewall of the lower protrusion of the swing rod may preferably be provided with a sidewall recess that can improve the adaptability to the first limiting protrusion.

[0008] In a further improvement, the second limiting protrusion can preferably be a second pivot connecting the second swing rod and the armrest seat. When the swing seat moves to its lowest position, the first and second swing rods come into contact. This provides better limiting effect and safer use.

[0009] As a further improvement, the upper part of the first swing arm can preferably be provided with a first protrusion, and the upper part of the second swing arm can be provided with a second recess that can fit against the first protrusion when the second swing arm swings. This makes the structure more stable.

[0010] As an improvement, the swing seat can preferably be provided with an oblong hole, and the rotation adjustment mechanism is provided with a connecting post with an oblong cross-section. The connecting post is inserted into the oblong hole, and the end of the connecting post is connected to a connecting piece that fits onto the swing seat. This provides good fixation.

[0011] As an improvement, a handle may preferably be provided at the top of the first swing arm to facilitate the adjustment of the armrest height.

[0012] As an improvement, the rotation adjustment mechanism may preferably include a housing, a ratchet adjustment part, a reset member, and a fixing block. The fixing block is connected to the housing and is connected to the ratchet adjustment part through the reset member. The housing can rotate relative to the ratchet adjustment part, and the handrail is connected to the housing.

[0013] The second technical problem to be solved by this utility model is to provide an application method for an adjustable armrest that can be kept in a horizontal position and has adjustable height, in view of the above-mentioned existing technology.

[0014] The technical solution adopted by this utility model to solve the above-mentioned technical problem is: a method for applying an adjustable armrest height to a seat, characterized by including the following steps.

[0015] 1. Push the first swing arm to swing, so that the swing seat moves up and down relative to the armrest seat. Stop the first swing arm when it moves to the appropriate position.

[0016] 2. Push the handrail to rotate to the appropriate angle to complete the rotation of the handrail;

[0017] 3. Fine-tune the first swing arm to move the swing seat to a suitable height, thus completing the adjustment of the handrail height and angle.

[0018] Compared with the prior art, the advantages of this utility model are: the handrail can be adjusted in both angle and height, and the angle and height adjustments can be performed simultaneously or separately, independently and without interference, making it convenient and effective to use; this utility model overcomes the problem that the prior art can only adjust the angle of the handrail, and realizes the height adjustment of the handrail, making it more comfortable for users to lean against, applicable to a wider range of people, and improving the user experience. Attached Figure Description

[0019] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 Rear projection image;

[0021] Figure 3 yes Figure 2 Rear projection view after adjusting the height of the handrail;

[0022] Figure 4 yes Figure 1 A frontal projection view;

[0023] Figure 5 yes Figure 4 Frontal projection view of the handrail after adjusting its height;

[0024] Figure 6 yes Figure 1 Exploded structural diagram;

[0025] Figure 7 yes Figure 6 A schematic diagram of the structure of the undecomposed part;

[0026] Figure 8 yes Figure 7 Exploded structural diagram;

[0027] Figure 9 yes Figure 6 A three-dimensional view of the structure related to the central handrail;

[0028] Figure 10 yes Figure 9 Exploded structural diagram;

[0029] Figure 11 yes Figure 10 The diagram shows the structure of the ratchet adjustment unit after it has rotated.

[0030] Figure 12 yes Figure 10 Further structural decomposition diagram;

[0031] Figure 13 yes Figure 10 A structural breakdown diagram from another perspective;

[0032] Figure 14 yes Figure 13 A three-dimensional view of part of the structure of the ratchet adjustment section. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 14 As shown, the adjustable armrest of this embodiment includes an armrest bar 4 and an armrest seat 1. The armrest seat 1 is provided with a linkage mechanism that can swing relative to the armrest seat 1 and stop at any position it swings to. The linkage mechanism is connected to a swing seat 2. The swing seat 2 is provided with a rotation adjustment mechanism that enables the armrest bar 4 to swing and stop at any position it swings to. The armrest bar 4 is connected to the rotation adjustment mechanism.

[0035] The linkage mechanism includes two swing rods. One end of each swing rod is movably connected to the armrest seat 1 via a first set of clamping members, and the other end of each swing rod is movably connected to the swing seat 2 via a second set of clamping members. The armrest seat 1, the two swing rods, and the four rotational connection points of the swing seat 2 form a parallelogram. A limiting protrusion is provided on the armrest seat 1 to restrict the further swinging of the swing rods.

[0036] The bottom of the first swing rod 31 is connected to the armrest seat 1 via the first rotating shaft 311. A lower swing rod protrusion 312 is provided on the first swing rod 31 located below the first rotating shaft 311. The limiting protrusion includes a first limiting protrusion 11 located below the first rotating shaft 311 and a second limiting protrusion located above the first rotating shaft 311. When the swing seat 2 moves to its highest position, the lower swing rod protrusion 312 contacts the first limiting protrusion 11. The first rotating shaft 311 has a structure with one end being oblong and the other end being round. The oblong end is inserted into the oblong hole of the armrest seat 1, and the round end is inserted into the corresponding round hole of the first swing rod 31. The first set of clamping components consists of two clamping plates, namely the first clamping plate 310 and the second clamping plate 320. A first bolt passes through the first clamping plate 310 and connects to the armrest seat and the first nut. A second bolt passes through the second clamping plate 320 and connects to the armrest seat and the second nut. The second set of clamping components is similar to the first set of clamping components, with two rotating shafts and corresponding clamping plates. The corresponding waist-shaped holes are set on the swing seat 2, so they will not be described in detail.

[0037] The side wall of the lower protrusion 312 of the swing rod is provided with a side wall recess 3121 to improve its adaptability to the first limiting protrusion 11. The second limiting protrusion is a second pivot 321 connecting the second swing rod 32 and the armrest seat 1. When the swing seat 2 moves to its lowest position, the first swing rod 31 and the second swing rod 32 are in contact with each other. The upper part of the first swing rod 31 is provided with a first protrusion, and the upper part of the second swing rod 32 is provided with a second recess 322 that can fit against the first protrusion when the second swing rod 32 swings.

[0038] The swing seat 2 is provided with a waist-shaped hole 21, and the rotation adjustment mechanism is provided with a connecting post 51 with a waist-shaped cross section. The connecting post 51 is inserted into the waist-shaped hole 21, and the end of the connecting post 51 is connected to the connecting piece 22 attached to the swing seat 2.

[0039] The top of the first swing arm 31 is provided with a handle 313.

[0040] The rotation adjustment mechanism includes a housing 5, a ratchet adjustment part 52, a reset member 53, and a fixing block 54. The fixing block 54 is connected inside the housing 5 and is connected to the ratchet adjustment part 52 via the reset member 53. The housing 5 can rotate relative to the ratchet adjustment part 52. The handle 4 is connected to the housing 5. The ratchet adjustment part 52 includes a ratchet ring and a ratchet block, with the specific structure as follows: Figures 11 to 14 As shown, the working principle of the ratchet ring and ratchet block cooperating to achieve the rotation and positioning of the handrail is existing technology and will not be described in detail. A positioning groove 521 is provided on the outer wall of the ratchet ring. An elastic positioning strip 50 is provided between the outer wall of the ratchet ring and the inner wall of the outer casing 5. When the elastic positioning strip 50 engages with the positioning groove 521, the handrail is locked.

[0041] The method for applying the height-adjustable armrest of a seat in this embodiment includes the following steps.

[0042] 1. Push the first swing rod 31 to swing, so that the swing seat 2 moves up and down relative to the armrest seat 1. When it moves to the appropriate position, stop the first swing rod 31.

[0043] 2. Push the handrail 4 to rotate to the appropriate angle to complete the rotation of the handrail 4;

[0044] 3. Fine-tune the first swing rod 31 to move the swing seat 2 to a suitable height, thus completing the adjustment of the handrail height and angle.

Claims

1. A seat armrest with adjustable height of the armrest, comprising an armrest bar (4), an armrest seat (1), characterized in that: The armrest seat (1) is provided with a linkage mechanism that can swing relative to the armrest seat (1) and stop at any position it swings to. The linkage mechanism is connected to the swing seat (2). The swing seat (2) is provided with a rotation adjustment mechanism that enables the armrest rod (4) to swing and stop at any position it swings to. The armrest rod (4) is connected to the rotation adjustment mechanism.

2. The armrest of the seat according to claim 1, characterized in that: The linkage mechanism includes two swing rods. One end of each swing rod is movably connected to the armrest seat (1) via a first set of clamping members, and the other end of each swing rod is movably connected to the swing seat (2) via a second set of clamping members. The four rotational connection points of the armrest seat (1), the two swing rods, and the swing seat (2) form a parallelogram. A limiting protrusion is provided on the armrest seat (1) to restrict the swing rods from swinging further.

3. The armrest of claim 2, wherein: The bottom of the first swing rod (31) is connected to the armrest seat (1) through the first rotating shaft (311). The first swing rod (31) located below the first rotating shaft (311) is provided with a swing rod lower protrusion (312). The limiting protrusion includes a first limiting protrusion (11) located below the first rotating shaft (311) and a second limiting protrusion located above the first rotating shaft (311). When the swing seat (2) moves to the highest position, the swing rod lower protrusion (312) and the first limiting protrusion (11) touch each other.

4. The armrest of claim 3, wherein: The side wall of the lower protrusion (312) of the swing rod is provided with a side wall recess (3121) that can improve the adaptability with the first limiting protrusion (11).

5. The armrest of claim 3, wherein: The second limiting protrusion is the second pivot (321) connecting the second swing rod (32) and the armrest seat (1). When the swing seat (2) moves to the lowest position, the first swing rod (31) and the second swing rod (32) are in contact with each other.

6. The armrest of claim 5, wherein: The first swing rod (31) has a first protrusion on its upper part, and the second swing rod (32) has a second recess (322) on its upper part that can fit the first protrusion when the second swing rod (32) swings.

7. The armrest of any one of claims 1 to 6, wherein: The swing seat (2) is provided with a waist-shaped hole (21), and the rotation adjustment mechanism is provided with a connecting column (51) with a waist-shaped cross section. The connecting column (51) is inserted into the waist-shaped hole (21), and the end of the connecting column (51) is connected to the connecting piece (22) attached to the swing seat (2).

8. A seat armrest according to any one of claims 3 to 6, characterised in that: The first swing arm (31) is provided with a handle (313) at its top.

9. The armrest of the seat according to any one of claims 1 to 6, characterized in that: The rotation adjustment mechanism includes an outer shell (5), a ratchet adjustment part (52), a reset part (53), and a fixing block (54). The fixing block (54) is connected inside the outer shell (5). The fixing block (54) is connected to the ratchet adjustment part (52) through the reset part (53). The outer shell (5) can rotate relative to the ratchet adjustment part (52). The handrail (4) is connected to the outer shell (5).

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