阅读说明：本技术 一种汽车及其应用调角器的汽车座椅扶手 (Automobile and automobile seat armrest applying angle adjuster thereof ) 是由 李双强 沈洪喆 于 2021-09-29 设计创作，主要内容包括：本发明公开了一种汽车及其应用调角器的汽车座椅扶手,其中,应用调角器的汽车座椅扶手包括：扶手本体(10)、扶手底座(20)和调角器组件；扶手底座(20)用于设置于车身(300)或椅盆；扶手本体(10)通过调角器组件可转动安装于扶手底座(20)。在本方案中,通过将调角器组件应用于扶手底座(20)与车身(300)或座椅椅盆固定的扶手本体(10)上,能够有效解决现有扶手锁止机构锁止强度低、锁止位置调整精度低等问题,而且使得扶手具有多个锁止位置,从而有助于提升了扶手的使用舒适度。(The invention discloses an automobile and an automobile seat armrest applying an angle adjuster thereof, wherein the automobile seat armrest applying the angle adjuster comprises: the angle adjuster comprises an armrest body (10), an armrest base (20) and an angle adjuster component; the armrest base (20) is used for being arranged on a vehicle body (300) or a chair basin; the armrest body (10) is rotatably mounted to the armrest base (20) by a recliner assembly. In this scheme, through being applied to handrail base (20) and automobile body (300) or on seat chair basin fixed handrail body (10) with the angle modulation ware subassembly, can effectively solve current handrail locking mechanism locking intensity low, locking position adjustment accuracy low scheduling problem, make the handrail have a plurality of locking positions moreover to the use comfort of handrail has helped promoting.)

1. An automobile seat armrest applying a recliner is characterized by comprising: the angle adjuster comprises an armrest body (10), an armrest base (20) and an angle adjuster component;

the armrest base (20) is used for being arranged on a vehicle body (300) or a chair basin; the armrest body (10) is rotatably mounted to the armrest base (20) via the recliner assembly.

2. The vehicle seat armrest applying the angle adjuster according to claim 1, wherein the armrest base (20) comprises a first armrest seat plate (21) and a second armrest seat plate (22) which are arranged side by side, and the armrest body (10) is located between the first armrest seat plate (21) and the second armrest seat plate (22);

the angle adjuster component comprises an angle adjuster mechanism and a rotating mechanism;

the first side of the handrail body (10) is rotatably mounted on the first handrail seat plate (21) through the angle adjuster mechanism, the second side of the handrail body (10) is rotatably mounted on the second handrail seat plate (22) through the rotating mechanism, and the angle adjuster mechanism and the rotating mechanism are coaxially arranged.

3. The vehicle seat armrest using the recliner as claimed in claim 2, wherein the recliner mechanism includes a recliner (30) and an unlocking handle (50);

the angle adjuster (30) is arranged on the first armrest seat plate (21), and the first side of the armrest body (10) is connected with the rotating part of the angle adjuster (30); the unlocking handle (50) is in transmission fit with the angle adjuster (30), and the rotation center of the unlocking handle (50) is concentric with the unlocking shaft center of the angle adjuster (30).

4. The automobile seat armrest applying the recliner as recited in claim 3, wherein said armrest body (10) comprises a first armrest side plate (11);

the first handrail seat plate (21) is welded with a sliding groove plate (37) of the angle adjuster (30), and the first handrail side plate (11) is welded with a ratchet wheel (32) of the angle adjuster (30).

5. The applied recliner automobile seat armrest according to claim 3, characterized in that the unlocking handle (50) comprises a handle (51) and a rotating shaft (52);

one end of the rotating shaft (52) is welded with the handle (51), and the other end of the rotating shaft is riveted with the hollow shaft (38) of the angle adjuster (30).

6. The applied recliner automobile seat armrest according to claim 2, characterized in that the rotation mechanism comprises a rotary joint (40).

7. The applied recliner automobile seat armrest according to claim 6, characterized in that the rotary joint (40) includes a rotation pin (41) and a bearing sleeve (42);

the rotating pin (41) is arranged on the second armrest seat plate (22); the second side of the handrail body (10) is sleeved on the rotating pin (41) through the bearing sleeve (42).

8. The applied recliner automobile seat armrest according to claim 7, characterized in that the armrest body (10) further comprises a second armrest side plate (12);

the rotating pin (41) is welded with the second handrail seat plate (22); the second handrail side plate (12) is sleeved on the rotating pin (41) through the bearing sleeve (42).

9. The vehicle seat armrest applying the angle adjuster according to claim 2, wherein the first armrest seat plate (21), the second armrest seat plate (22) and/or a side plate of the armrest body (10) are provided with a rib structure.

10. A vehicle comprising a seat arm rest, wherein the seat arm rest is a vehicle seat arm rest employing a recliner as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of automobile seats, in particular to an automobile and an automobile seat armrest applying an angle adjuster thereof.

Background

Conventional designs of seat armrests typically use an open (semi-open) locking mechanism; the armrest locking mechanism is generally an unlocking mechanism of a cam which is not concentric with the rotation center of the armrest.

However, the locking position of the conventional seat armrest locking mechanism is generally a fixed position, and cannot be adjusted, and even if the locking position can be adjusted, the adjustment precision is low, and is generally larger than 2 degrees/gear, and the locking strength of the conventional seat armrest locking mechanism is limited because the engagement area of the conventional seat armrest locking mechanism is small.

Disclosure of Invention

In view of this, the invention provides an automobile seat armrest applying an angle adjuster, and the angle adjuster assembly is applied to an armrest body in which an armrest base and an automobile body or a seat basin are fixed, so that the problems of low locking strength, low locking position adjustment precision and the like of the conventional armrest locking mechanism can be effectively solved, and the armrest has a plurality of locking positions, thereby being beneficial to improving the use comfort of the armrest.

In order to achieve the purpose, the invention provides the following technical scheme:

an automobile seat armrest applying a recliner, comprising: the handrail comprises a handrail body, a handrail base and an angle adjuster component;

the armrest base is arranged on the vehicle body or the chair basin; the armrest body is rotatably mounted on the armrest base through the angle adjuster assembly.

Preferably, the armrest base comprises a first armrest seat board and a second armrest seat board which are arranged in parallel, and the armrest body is located between the first armrest seat board and the second armrest seat board;

the angle adjuster component comprises an angle adjuster mechanism and a rotating mechanism;

the first side of the handrail body is rotatably arranged on the first handrail seat plate through the angle adjuster mechanism, the second side of the handrail body is rotatably arranged on the second handrail seat plate through the rotating mechanism, and the angle adjuster mechanism and the rotating mechanism are coaxially arranged.

Preferably, the recliner mechanism includes a recliner and an unlocking handle;

the angle adjuster is arranged on the first armrest seat plate, and the first side of the armrest body is connected with the rotating part of the angle adjuster; the unlocking handle is in transmission fit with the angle adjuster, and the rotation center of the unlocking handle is concentric with the unlocking shaft center of the angle adjuster.

Preferably, the armrest body comprises a first armrest side panel;

the first handrail seat plate is welded with a sliding groove plate of the angle adjuster, and the first handrail side plate is welded with a ratchet wheel of the angle adjuster.

Preferably, the unlocking handle comprises a handle and a rotating shaft;

one end of the rotating shaft is welded with the handle, and the other end of the rotating shaft is riveted with the hollow shaft of the angle adjuster.

Preferably, the rotation mechanism comprises a rotary joint.

Preferably, the rotary joint comprises a rotation pin and a bearing sleeve;

the rotating pin is arranged on the second armrest seat plate; the second side of the handrail body is sleeved on the rotating pin through the bearing sleeve.

Preferably, the armrest body further comprises a second armrest side panel;

the rotating pin is welded with the second armrest seat plate; the second handrail side plate is sleeved on the rotating pin through the bearing sleeve.

Preferably, the first armrest seat plate, the second armrest seat plate and/or a side plate of the armrest body are provided with a reinforcing rib structure.

An automobile comprises the seat armrest, and the seat armrest is the automobile seat armrest applying the angle adjuster.

According to the technical scheme, the angle adjuster component is applied to the armrest body fixed by the armrest base and the automobile body or the seat basin, so that the problems of low locking strength, low locking position adjustment precision and the like of the conventional armrest locking mechanism can be effectively solved, and the armrest has a plurality of locking positions, so that the use comfort of the armrest is improved.

The invention also provides an automobile, which has corresponding beneficial effects due to the adoption of the automobile seat armrest applying the angle adjuster, and specific reference can be made to the foregoing description, so that the detailed description is omitted.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a side view of an armrest for a vehicle seat with an angle adjuster according to an embodiment of the present invention;

FIG. 2 is a front view of an armrest for a vehicle seat, to which an angle adjuster is applied according to an embodiment of the present invention;

FIG. 3 is a side view of an armrest for a vehicle seat employing a recliner according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram (in a retracted position) of an armrest of an automobile seat applying a recliner according to an embodiment of the present invention;

fig. 5 is a schematic structural view (in a retracted position) of an armrest for a seat of an automobile applying a recliner according to another embodiment of the present invention;

FIG. 6 is a schematic structural diagram (in the use position) of an armrest of an automobile seat using a recliner according to an embodiment of the present invention;

FIG. 7 is a partially enlarged view of an armrest for a vehicle seat employing a recliner, according to an embodiment of the present invention;

fig. 8 is an exploded view of a seat armrest for an automobile to which an angle adjuster is applied according to an embodiment of the present invention;

fig. 9 is a schematic view of the assembly of the rotary joint and the armrest according to the embodiment of the present invention;

fig. 10 is an exploded view of a structure of a recliner provided in an embodiment of the present invention;

FIG. 11 is a schematic view of the assembly of the return spring, hollow shaft and chute plate provided in the embodiment of the invention;

FIG. 12 is a schematic view of the assembly of the hollow shaft, the unlocking cam and the locking cam provided by the embodiment of the invention;

FIG. 13 is a schematic view of the assembly of the hollow shaft, the unlocking cam and the locking cam according to another embodiment of the present invention;

fig. 14 is a schematic diagram of a locked state of the recliner provided by the embodiment of the present invention;

FIG. 15 is a schematic diagram illustrating movement of a slider according to an embodiment of the present invention;

FIG. 16 is a schematic diagram illustrating the movement of a slider according to another embodiment of the present invention;

fig. 17 is a schematic view of an unlocking state of the recliner provided in the embodiment of the present invention.

The armrest comprises an armrest body 10, a first armrest side plate 11, a second armrest side plate 12, an armrest base 20, a first armrest seat plate 21, a second armrest seat plate 22, an angle adjuster 30, a sheath 31, a ratchet wheel 32, an adjusting ring 33, an unlocking cam 34, a locking cam 35, a sliding block 36, a sliding chute plate 37, a hollow shaft 38, a return spring 39, a rotary joint 40, a rotating pin 41, a bearing sleeve 42, an unlocking handle 50, a handle 51 and a rotating shaft 52, wherein the first armrest side plate is arranged on the armrest body, the second armrest seat plate 22 is arranged on the armrest seat plate, the angle adjuster 30 is arranged on the armrest seat plate, the ratchet wheel 32 is arranged on the sheath, the adjusting ring 33 is arranged on the adjusting ring, the unlocking cam 35 is arranged on the locking cam, the sliding block 36 is arranged on the sliding chute plate 37, the hollow shaft 38 is arranged on the hollow shaft, the return spring 39 is arranged on the rotating joint, the rotating pin 41 is arranged on the bearing sleeve 42, the unlocking handle is arranged on the rotating shaft 51, and the rotating shaft is arranged on the rotating shaft; 200 is a cushion; 300 is a vehicle body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an automobile seat armrest applying an angle adjuster according to an embodiment of the present invention includes: a handrail body 10, a handrail base 20 and a recliner assembly;

the armrest base 20 is for being mounted to the vehicle body 300 or the seat pan; the armrest body 10 is rotatably mounted to the armrest base 20 by a recliner assembly.

In the present embodiment, it should be noted that, as shown in fig. 2, the armrest base 20 is used for being fixedly connected with the vehicle body 300 or the seat pan, and the present armrest is relatively independent from the adjacent seat and does not move along with the movement of the armrest and the adjacent seat; in addition, the angle adjuster assembly has a locking function, and can realize the locking of the armrest body 10; specifically, as shown in fig. 3, when the armrest body 10 is rotated to its storage position (flush with the use position of a conventional seat back so as to be usable as a back rest), storage locking of the armrest body 10 can be achieved by the locking function of the recliner; wherein, the storage position of the armrest body 10 may be a range or a determined position; when the armrest body 10 is rotated to its use position (substantially horizontal), the recliner assembly may be locked or unlocked, and use locking or unlocking of the armrest body 10 may be achieved. In addition, angle modulation ware subassembly in this scheme compares in traditional armrest rotation locking mechanism, has a plurality of locking positions, and locking position adjusts the precision height moreover to the locking meshing region is equivalent to and arranges along circumference, makes characteristics such as locking structural strength height.

According to the technical scheme, the angle adjuster component is applied to the armrest body fixed by the armrest base and the automobile body or the seat basin, so that the problems of low locking strength, low locking position adjustment precision and the like of the conventional armrest locking mechanism can be effectively solved, and the armrest has a plurality of locking positions, so that the use comfort of the armrest is improved.

In the present solution, as shown in fig. 5, the armrest base 20 includes a first armrest seat plate 21 and a second armrest seat plate 22 which are arranged in parallel, and the armrest body 10 is located between the first armrest seat plate 21 and the second armrest seat plate 22;

the angle adjuster component comprises an angle adjuster mechanism and a rotating mechanism; of course, the rotating mechanism may also be an angle adjuster mechanism;

the first side of the armrest body 10 (i.e. the right side of the armrest body 10 in fig. 4) is rotatably mounted on the first armrest seat plate 21 through an angle adjuster mechanism, the second side of the armrest body 10 (i.e. the left side of the armrest body 10 in fig. 4) is rotatably mounted on the second armrest seat plate 22 through a rotating mechanism, and the angle adjuster mechanism and the rotating mechanism are coaxially arranged to ensure the consistency of the rotation of the armrest body 10. This scheme so designs to realize the two side rotations of handrail body 10, help improving handrail body 10 pivoted reliability and stability.

Specifically, as shown in fig. 4, the recliner mechanism includes a recliner 30 and an unlocking handle 50;

as shown in fig. 7, the recliner 30 is disposed on the first seat board 21, and the first side of the armrest body 10 is connected to the rotating part of the recliner 30 (i.e., the ratchet 32 of the recliner 30); the unlocking handle 50 is in transmission fit with the recliner 30, that is, the unlocking handle 50 is connected with the hollow shaft 38 of the recliner 30, and the rotation center of the unlocking handle 50 is concentric with the unlocking shaft center of the recliner 30. I.e. the center of rotation of the unlocking handle 50 is concentric with the center of the unlocking cam 34 of the recliner 30, the concentric design of the recliner mechanism of the present solution is different from the non-concentric design of the existing armrest locking mechanism. In addition, the recliner mechanism of the present solution is designed so as to facilitate rotational adjustment of the armrest body 10. In addition, the unlocking handle 50 is driven to move in the unlocking direction, so that the angle adjuster 30 can be unlocked, the armrest body 10 can rotate relative to the armrest base 20, and the switching between the use position and the storage position of the armrest can be realized.

Further, as shown in fig. 5, the armrest body 10 includes a first armrest side panel 11;

the first handle base plate 21 is welded to the chute plate 37 of the recliner 30, and the first handle side plate 11 is welded to the ratchet 32 of the recliner 30. This scheme design like this for the rotation connection structure of handrail body 10 first side is more fastened, helps further promoting handrail body 10 pivoted reliability and stability.

Still further, as shown in fig. 8, the unlocking handle 50 includes a handle 51 and a rotating shaft 52;

one end of the rotating shaft 52 is welded to the handle 51, and the other end is riveted to the hollow shaft 38 of the recliner 30. Wherein, one end of the rotating shaft 52 is vertically welded with the handle 51. The unlocking handle 50 of the scheme is designed in such a way, and has the characteristics of simple structure, convenience in unlocking and the like.

In this embodiment, the rotation mechanism includes a rotary joint 40, as shown in fig. 5. This scheme so designs, has characteristics such as simple structure, rotatory smooth and easy. That is, the armrest body 10 of the present embodiment uses the recliner 30 as the main rotation adjustment on one side and the rotary joint 40 as the auxiliary rotation adjustment on the other side. Of course, the rotation mechanism may also include a hinge or recliner.

Specifically, as shown in fig. 9, the rotary joint 40 includes a rotation pin 41 and a bearing housing 42;

the rotation pin 41 is provided to the second armrest seat plate 22; the second side of the handle body 10 is fitted to the rotation pin 41 through a bearing housing 42. The rotary joint 40 of the scheme has the characteristics of simple structure, simplicity and convenience in assembly, smoothness in rotation and the like.

Still further, as shown in fig. 5, the armrest body 10 further includes a second armrest side panel 12;

as shown in fig. 9, the rotation pin 41 is welded to the second seat rail 22; the second handrail side plate 12 is fitted to the rotation pin 41 through a bearing housing 42. In this way, the rotation connection structure of the second side of the armrest body 10 is more secure.

In this embodiment, as shown in fig. 4 and 5, the first armrest seat plate 21, the second armrest seat plate 22, and/or the side plate of the armrest body 10 are provided with a rib structure. The side plates of the armrest body 10 include a first armrest side plate 11 and a second armrest side plate 12. Therefore, the structural strength of the handrail is enhanced, and the service life of the handrail can be further ensured.

The embodiment of the invention also provides an automobile, which comprises the seat armrest, wherein the seat armrest is the automobile seat armrest applying the angle adjuster. Because this scheme has adopted foretell car seat handrail of using angle modulation ware, it also has corresponding beneficial effect consequently, can refer to the preceding explanation specifically, and the no longer repeated description here.

The present solution is further described below with reference to specific embodiments:

the invention is used for protecting a new structure of the angle adjuster applied to the automobile seat armrest;

the basic scheme of the invention is as follows:

one side of the armrest is provided with an automobile seat angle adjuster (a mature mechanism for adjusting the angle of the backrest), the other side of the armrest can be provided with a rotary joint (a hinge, an angle adjuster and the like), the angle adjuster is provided with a certain lockable range and a non-lockable range, and a seat plate of the armrest is fixed with a vehicle body or a seat basin (the armrest is relatively independent from the adjacent seat and does not move along with the movement of the armrest and the adjacent seat);

when the armrest is in the storage position (which is flush with the use position of the conventional seat backrest so as to be used as the backrest), the armrest can be locked by virtue of the locking function of the angle adjuster, and the storage position can be a range or a determined position;

when the armrest is in its use position (substantially horizontal), the recliner may be in a locked or unlocked state;

from the storage position to the use position, the angle adjuster is in an idle stroke section (unlocked), and is convenient to adjust rapidly.

Angle adjuster: a device capable of realizing backrest angle adjustment is generally structured as follows:

sheathing: the part relatively fixes the axial positions of the ratchet wheel and the chute plate;

a chute plate: the core component is welded and fixed with external parts of the core component, generally fixed with a seat and a chair basin end, and a cavity is arranged inside the core component to provide positioning for the sliding block and other parts.

Ratchet: the toothed part, the core external part is welded and fixed, generally fixed with the backrest end;

a reset spring: providing a torque (directly or indirectly) for driving the locking projection to move towards the locking direction (in the upper drawing, the rotating shaft is directly driven, and the rotating shaft is matched with the unlocking cam, so that the rotation is indirectly driven);

hollow shaft: parts which can be matched with an external link rod, a handle and the like to realize the convenience of unlocking the core part through the external parts can be realized, and in some examples, the parts can also be made into solid;

unlocking the cam: the sliding block has a section of profile matched with the sliding block, and the function of pulling the sliding block to be disengaged from the ratchet wheel can be realized by rotating along the center of the core piece;

a slide block: the toothed part can realize a locking function by being meshed with the ratchet wheel;

locking the cam: a part for driving the slide block to be engaged with the ratchet wheel;

as shown in fig. 11, the outer side of the hollow shaft is fitted with a shaft having a square central hole for the unlocking cam and a square central hole for the locking cam. As shown in fig. 12, the rotation of the hollow shaft, the unlocking cam and the locking cam are synchronous and in the same direction. The hollow shaft rotates counterclockwise from the perspective of fig. 12 and rotates clockwise from the perspective of fig. 13.

According to the view angle of fig. 13, the unlocking cam rotates clockwise, and rotates by a certain angle, the profile of the unlocking cam pulls the sliding block towards the circle center direction through the cam on the sliding block, that is, 4 sliding blocks in fig. 15 all translate in the sliding groove of the sliding groove plate towards the circle center direction. As shown in fig. 16, the slide block retreats and the locking cam also rotates clockwise, so that a descending space is reserved for the slide block which continuously translates towards the center of the circle until the locking cam and the slide block collide with each other as shown in fig. 17.

When the angle is clockwise rotated in the view of fig. 14, the slide block moves to the circle center for a certain displacement, and the teeth of the slide block are disengaged from the teeth on the ratchet wheel. Therefore, the ratchet wheel can rotate freely only by applying a certain torque to the ratchet wheel, and the ratchet wheel and the handrail body are fixedly connected together in general. Therefore, the function of forward and backward rotation of the armrest body can be realized only by applying a certain load to the armrest body forward and backward by rotating the hollow shaft, as shown in fig. 1, and the purpose of adjusting the angle of the armrest body is achieved. The unlocking principle of the armrest is described above, and the locking process is the reverse process.

The inner peripheral wall of a ratchet wheel inside the angle adjuster is uniformly provided with a plurality of small teeth (generally 180), the graduation of each tooth is 2 degrees, a sliding block matched with the ratchet wheel is also provided with the small teeth, and the sliding block can slide and stretch to realize the engagement or the disengagement with the ratchet wheel, so that the ratchet wheel can rotate by 2 degrees at a minimum when being adjusted.

Handrail: the mechanism which can provide the arm support function after being adjusted to the horizontal position generally has the storage function, and can be flush with the backrest of the seat to provide the support for the back after being stored;

locking: the description of a stable state of the mechanism can bear larger load without relative rotation or translation after locking;

unlocking: the state of free rotation or translation is that the ratchet relatively rotates relative to the chute plate for the angle regulator, and the unlocking cam is driven by the rotating hollow shaft to pull the slide block to be disengaged from the teeth of the ratchet.

Hollow stroke: a special non-locking state, at this moment need not continuously exert the unblock power and the mechanism can be in non-locking state, generally rely on angle modulation ware inside special structural design to realize, the realization method generally has two kinds: the local part is toothless or the sliding block is provided with a lug boss which is contacted with the local contour of the ratchet wheel to avoid tooth contact.

The angle adjuster is applied to the armrest with the base fixed with the automobile body, can effectively solve the problems of strength and noise, and has multi-position locking, so that the comfort is further improved.

The invention provides an armrest structure, wherein a seat board is connected with a vehicle body or a seat basin of a seat;

the seat plate is welded with a sliding groove plate of the angle adjuster, the handrail side plate is welded with a ratchet wheel of the angle adjuster, the handle is riveted with a hollow shaft of the angle adjuster, and the handle is welded with the rotating shaft;

the driving handle moves towards the unlocking direction to realize the unlocking of the angle adjuster, so that the purpose that the side plates of the handrail can rotate relative to the seat plate is achieved, and the handrail is used and stored.

An angle adjuster is used on one side of the handrail, a rotary joint is used on the other side of the handrail, and the structure of the angle adjuster can be shown in figure 9; the rotary joint can be a mechanism such as an angle adjuster and a hinge, and the axis of the rotary joint is concentric with the rotary center of the side of the angle adjuster;

the points to be protected of the invention are as follows:

1. the seat board (base) of the armrest is connected with the automobile body or the chair basin;

2. one side of the handrail framework is provided with an angle adjuster, the other side of the handrail framework can be provided with the angle adjuster or a rotating mechanism, and the two rotating mechanisms are coaxial;

3. the key characteristic of the angle adjuster, as a commonly used automobile backrest adjusting mechanism, is that the center of an unlocking shaft is concentric with the rotation center of a traditional armrest locking mechanism.

The invention has the advantages that:

1. the angle adjuster is a common mechanism, and the maturity, safety, stability and reliability of the angle adjuster are higher than those of a common armrest locking mechanism;

2. the use condition of the angle adjuster is more rigorous, and the strength and the comfort performance of the angle adjuster are superior to those of a common handrail locking mechanism;

3. the angle adjuster is generally a platform product, and has more advantages in development time and cost than a conventional handrail mechanism;

4. the common handrail locking mechanism can not be closed, the sealing performance of the angle adjuster is far better than that of the angle adjuster, the angle adjuster can be suitable for framework baking finish, and the process flow is simpler than that of the traditional handrail locking mechanism.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.