Handrail assembly with built-in limiting mechanism

Abstract

The utility model relates to an armrest assembly with a built-in limiting mechanism, which comprises an armrest support formed or fixed on a seat assembly and comprising two hinged parts arranged at an interval, and two shaft pieces fixed on the two hinged parts; the armrest framework is located between the two hinge parts, the two opposite sides of the armrest framework are rotationally connected to the two shaft pieces respectively, and at least one side of the armrest framework is rotationally connected to the corresponding shaft piece through an angle adjuster; the limiting mechanism is arranged on at least one side of the armrest framework and comprises a fixed blocking piece fixed to the corresponding shaft piece and a movable blocking piece fixed to the armrest framework, and when the armrest framework rotates to the designed opening position, the movable blocking piece makes contact with the fixed blocking piece and is blocked and limited by the fixed blocking piece. According to the armrest assembly, the limiting mechanism is arranged between the armrest outer cover and the armrest framework, the outer space of the hinged part does not need to be occupied, the requirement for the thickness size of the armrest outer cover can be greatly reduced, and the armrest assembly is suitable for occasions with the high requirement for the size of the armrest assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, and particularly relates to an armrest assembly with a built-in limiting mechanism. Background Art

[0002] At present, there are mainly two forms of rear seat armrests: The first is the 20% armrest 2, as shown in Fig. 1(a). This 20% armrest 2 is completely independent between two rear seats 1. When it is opened, the backrests of the two rear seats 1 are completely separated, and the two rear seats 1 and the 20% armrest 2 can move independently. This design enables the 20% armrest 2 to have sufficient thickness space to arrange an angle adjuster to achieve self-locking. The second is the 46-division armrest 20, as Figure 2 shown. When the 46-division armrest 20 is opened, there is still a backrest frame 11 connected between the two rear seats 1. This design limits the thickness space of the 46-division armrest 20, so usually an angle adjuster cannot be arranged and there is no self-locking function. When the 46-division armrest 20 is flipped to the designed open position, the headrest at the top of the 46-division armrest 20 supports the 46-division armrest 20. However, during a collision, the 46-division armrest 20 will accidentally open due to the lack of a self-locking function. Therefore, more and more customers require the 46-division armrest 20 to also have a self-locking function.

[0003] An armrest usually provided with an angle adjuster is also provided with a limiting mechanism. The rotation of the armrest relative to the seat is achieved through the angle adjuster, and the limiting mechanism restricts the armrest from continuing to rotate when the armrest rotates to the designed open position to limit the armrest.

[0004] As shown in Fig. 1(b) and Fig. 1(c), the existing limiting mechanism includes a movable limiting member 21 and a fixed limiting member 22. The movable limiting member 21 is usually arranged on the armrest frame, while the fixed limiting member 22 is arranged on the armrest bracket fixedly connected to the seat assembly. When the armrest frame rotates relative to the armrest bracket, the movable limiting member 21 rotates together with the armrest frame. When the armrest frame rotates to the designed open position, the movable limiting member 21 contacts the fixed limiting member 22 and is blocked and limited by the fixed limiting member 22, thereby realizing the limitation of the armrest frame. For aesthetics, the outer cover 23 of the armrest bracket needs to cover the fixed limiting member 22 on the armrest bracket. According to the requirements of relevant standards, the armrest outer cover 24 (usually composed of an armrest plastic shell, foam, and a cover) not only needs to cover the movable limiting member 21 on the armrest frame but also cover the outer cover 23 of the armrest bracket so that when looking at the armrest from the side, the armrest bracket part can be completely blocked. Therefore, for the limiting mechanism with the fixed limiting member 22 arranged on the armrest bracket, a larger-sized outer cover 23 of the armrest bracket is required, and further, a larger-sized armrest outer cover 24 is required. This makes the existing external limiting mechanism unable to be arranged on the 46-division armrest with an angle adjuster. Content of the Utility Model

[0005] To solve the above problems, the present utility model provides an armrest assembly with an internal limiting mechanism. By arranging the limiting mechanism between the armrest outer cover and the armrest skeleton, it is not necessary to occupy the external space of the hinge part, which can greatly reduce the thickness dimension requirements of the armrest outer cover and is applicable to occasions with high requirements for the size of the armrest assembly.

[0006] The present utility model is realized through the following solutions: An armrest assembly with an internal limiting mechanism, comprising:

[0007] An armrest bracket formed on or fixed to the seat assembly, the armrest bracket including two spaced-apart hinge parts, and two shaft members fixed on the two hinge parts;

[0008] An armrest skeleton, the armrest skeleton being located between the two hinge parts, and the opposite sides of the armrest skeleton being respectively rotatably connected to the two shaft members. Among them, at least one side of the opposite sides of the armrest skeleton is rotatably connected to the corresponding shaft member through an angle adjuster to drive the armrest skeleton to rotate relative to the armrest bracket around the shaft member;

[0009] A limiting mechanism provided on at least one side of the armrest skeleton, including a fixed stopper fixed on the corresponding shaft member and a movable stopper fixed on the armrest skeleton. When the armrest skeleton rotates relative to the armrest bracket to the designed open position, the movable stopper contacts the fixed stopper and is blocked and limited by the fixed stopper.

[0010] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model is that one side of the armrest skeleton is rotatably connected to one side of the shaft member through an angle adjuster, and the other side of the armrest skeleton is rotatably connected to the other side of the shaft member through a fixedly connected adapter sleeve.

[0011] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model is that the number of the limiting mechanisms is one and is arranged on the same side as the angle adjuster.

[0012] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model is that the number of the limiting mechanisms is one and is arranged on the same side as the adapter sleeve.

[0013] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model is that the number of the limiting mechanisms is two and is respectively arranged on the same sides as the angle adjuster and the adapter sleeve.

[0014] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model is that both opposite sides of the armrest skeleton are rotatably connected to the two shaft members through angle adjusters.

[0015] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model lies in that the number of the limiting mechanisms is one, and it is arranged on the same side as the angle adjuster on any side.

[0016] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model lies in that the number of the limiting mechanisms is two, and they are respectively arranged on the same sides as the angle adjusters on both sides.

[0017] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model lies in that the angle adjuster includes a fixed disk fixed to the shaft member on the corresponding side, and a rotating disk rotatably connected to the fixed disk. The rotating disk is fixed to the corresponding side of the armrest skeleton, and the fixed stop of the limiting mechanism arranged on the same side as the angle adjuster is fixed on the shaft member or the fixed disk on the corresponding side, and the movable stop is fixed on the rotating disk or the armrest skeleton.

[0018] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model lies in that a lotus slice for fixing to the fixed disk is fixed on the shaft member, and the fixed stop is formed at the edge of the lotus slice and extends to the rotation path of the movable stop.

[0019] A further improvement of the armrest assembly with an internal limiting mechanism of the present utility model lies in that the fixed stop of the limiting mechanism arranged on the same side as the adapter sleeve includes a fixed protrusion, the fixed protrusion is fixed on the shaft member on the corresponding side and extends radially outward along the shaft member, and the movable stop includes a movable protrusion, the movable protrusion is fixed on the inner circumferential surface of the adapter sleeve and extends radially inward along the adapter sleeve.

[0020] By arranging the limiting mechanism between the armrest outer cover and the armrest skeleton, the present utility model does not need to occupy the external space of the hinge part, can greatly reduce the thickness dimension requirement of the armrest outer cover, and is applicable to occasions with high requirements for the size of the armrest assembly, such as 46-division armrests. In addition, the present utility model provides two types of limiting mechanisms. One can be arranged on one side of the angle adjuster, and the other can be arranged on the non-angle-adjuster side, which can provide a limiting function for different armrest structures. Description of the Drawings

[0021] Figure 1(a) shows a schematic diagram of the opening and closing state of the 20% armrest on the rear seat.

[0022] Figure 1(b) shows a schematic layout diagram of the movable limiting member and the fixed limiting member in the existing limiting mechanism.

[0023] Figure 1(c) shows a schematic diagram of the thickness dimension of the armrest outer cover with the limiting mechanism shown in Figure 1(b).

[0024] Figure 2Shows a schematic diagram of the opening and closing state of the 46-point armrest on the rear seat.

[0025] Figure 3 Shows an exploded view of the armrest skeleton, the limiting mechanism and the armrest bracket in the first embodiment of the present invention.

[0026] Figure 4 Shows an assembly schematic diagram of the armrest skeleton, the limiting mechanism and the armrest bracket in the first embodiment of the present invention.

[0027] Figure 5 Shows an exploded view of the armrest skeleton and the limiting mechanism in the first embodiment of the present invention.

[0028] Figure 6 Shows an assembly schematic diagram of the armrest skeleton and the limiting mechanism in the first embodiment of the present invention.

[0029] Figure 7 Shows an exploded view of the angle adjuster of the present invention and the corresponding limiting mechanism.

[0030] Figure 8 Shows a schematic diagram of the working principle of the limiting mechanism when the first embodiment of the present invention is in the closed state.

[0031] Figure 9 Shows a schematic diagram of the working principle of the limiting mechanism when the first embodiment of the present invention is in a partially open state.

[0032] Figure 10 Shows a schematic diagram of the working principle of the limiting mechanism when the first embodiment of the present invention is in the fully open state.

[0033] Figure 11 Shows an exploded view of the armrest skeleton and the limiting mechanism in the second embodiment of the present invention.

[0034] Figure 12 Shows an exploded view of the armrest skeleton and the limiting mechanism in the third embodiment of the present invention.

[0035] Figure 13 Shows an exploded view of the armrest skeleton and the limiting mechanism in the fourth embodiment of the present invention.

[0036] Figure 14 Shows an exploded view of the armrest skeleton and the limiting mechanism in the fifth embodiment of the present invention.

[0037] Figure 15 Shows an exploded view of the armrest skeleton and the limiting mechanism in the sixth embodiment of the present invention.

[0038] Figure 16 Shows an exploded view of the armrest skeleton and the limiting mechanism in the seventh embodiment of the present invention.

[0039] Figure 17 Shows the schematic diagram of the thickness dimension of the armrest outer cover of the present utility model.

[0040] In the figure: 1, seat; 11, backrest frame; 2, 20% armrest; 20, 46-point armrest; 21, movable limiting member; 22, fixed limiting member; 23, outer cover of armrest bracket; 24, armrest outer cover; 31, first hinge portion; 311, first shaft hole; 32, second hinge portion; 321, second shaft hole; 33, first shaft member; 331, first special-shaped end; 332, third special-shaped end; 34, second shaft member; 341, second special-shaped end; 35, lotus slice; 351, third shaft hole; 4, armrest frame; 41, first side plate; 411, first mounting hole; 42, second side plate; 421, second mounting hole; 43, card slot; 5, angle adjuster; 51, fixed disk; 52, rotating disk; 6, adapter sleeve; 61, bushing; 7, first limiting mechanism; 71, first fixed stopper; 72, first movable stopper; 8, second limiting mechanism; 81, second fixed stopper; 81a, first fixed protrusion; 81b, second fixed protrusion; 82, second movable stopper; 82a, first movable protrusion; 82b, second movable protrusion. Detailed implementation manners

[0041] Since the traditional limiting mechanism occupies a large space and is not suitable for application occasions with high requirements for the size of the armrest assembly. Therefore, the present utility model provides an armrest assembly with an internal limiting mechanism. By arranging the limiting mechanism between the armrest outer cover and the armrest frame, it does not need to occupy the external space of the hinge portion, can greatly reduce the thickness dimension requirement of the armrest outer cover, and is suitable for occasions with high requirements for the size of the armrest assembly. The following further describes the armrest assembly with the internal limiting mechanism in combination with the drawings through specific embodiments.

[0042] Refer to Figures 3 to 7As shown in the figure, an armrest assembly with a built-in limiting mechanism includes an armrest bracket, an armrest skeleton 4, and a limiting mechanism. The armrest bracket is formed on or fixed to the seat assembly. The armrest bracket includes a first hinge portion 31 and a second hinge portion 32 arranged at intervals. A first shaft member 33 and a second shaft member 34 are respectively fixed on the first hinge portion 31 and the second hinge portion 32. The first shaft member 33 and the second shaft member 34 extend relatively inward along the same axis L. A first shaft hole 311 for inserting and fixing the first shaft member 33 is formed on the first hinge portion 31, and a second shaft hole 321 for inserting and fixing the second shaft member 34 is formed on the second hinge portion 32. It can be understood that the first shaft member 33 can also be pre-integrated with the first hinge portion 31 into one piece, and the second shaft member 34 can also be pre-integrated with the second hinge portion 32 into one piece. Preferably, in order to ensure the reliable fixation of the shaft member and the hinge portion, one end of the first shaft member 33 fixed to the first hinge portion 31 is formed into a first special-shaped end 331. Correspondingly, the first shaft hole 311 is a special-shaped hole adapted to the first special-shaped end 331. One end of the second shaft member 34 fixed to the second hinge portion 32 is formed into a second special-shaped end 341. Correspondingly, the second shaft hole 321 is a special-shaped hole adapted to the second special-shaped end 341.

[0043] The armrest skeleton 4 is located between the first hinge portion 31 and the second hinge portion 32. The armrest skeleton 4 includes a first side plate 41 and a second side plate 42. The first side plate 41 is rotatably connected to the first shaft member 33, and the second side plate 42 is rotatably connected to the second shaft member 34. Among them, an angle adjuster 5 (see Figure 12 and Figure 13 ) is installed on the first side plate 41 and / or the second side plate 42 and is rotatably connected to the first shaft member 33 and / or the second shaft member 34 through the angle adjuster 5 to drive the armrest skeleton 4 to rotate relative to the armrest bracket 3 around the axis L.

[0044] The limiting mechanism is arranged between the first side plate 41 and the first hinge portion 31, and / or between the second side plate 42 and the second hinge portion 32. It includes a fixed stopper fixed on the first shaft member 33 and / or the second shaft member 34, and a movable stopper fixed on the first side plate 41 and / or the second side plate 42. When the armrest skeleton 4 rotates relative to the armrest bracket to the designed open position (i.e., the right figure state in FIG. 1 and Figure 2 ), the movable stopper contacts the fixed stopper and is blocked and limited by the fixed stopper.

[0045] Regarding the setting of the limiting mechanism, it is described through the following several embodiments:

[0046] The first embodiment, refer to Figures 3 to 7As shown in the figure: A corner adjuster 5 is installed on the first side plate 41, and the first side plate 41 is rotatably connected to the first shaft member 33 through the corner adjuster 5. Specifically, as Figure 7 shown, the corner adjuster 5 includes a fixed disk 51 and a rotating disk 52 rotatably connected to the fixed disk 51. The rotating disk 52 is fixed on the first side plate 41. An osmanthus slice 35 adapted to the shape of the fixed disk 51 is fixed on the first shaft member 33. The osmanthus slice 35 is butt-jointed and fixed to the fixed disk 51, thereby realizing the fixed connection between the fixed disk 51 and the first shaft member 33. A third shaft hole 351 for the first shaft member 33 to be inserted and fixed is formed in the osmanthus slice 35. Through the arrangement of the osmanthus slice 35, the fixed area between the first shaft member 33 and the fixed disk 51 is increased, enabling reliable fixation between the two. Preferably, one end of the first shaft member 33 inserted into the third shaft hole 351 is formed as a third special-shaped end 332. Correspondingly, the third shaft hole 351 is a special-shaped hole adapted to the third special-shaped end 332. Through the above connection structure, the rotatable connection between the first side plate 41 and the first shaft member 33 is realized, and by the rotation of the rotating disk 52 relative to the fixed disk 51 in the corner adjuster 5, the armrest frame 4 can be driven to rotate relative to the armrest bracket. A transfer sleeve 6 is fixed on the second side plate 42, and the second shaft member 34 is rotatably inserted into the transfer sleeve 6. When the corner adjuster 5 drives the armrest frame 4 to rotate relative to each other, the second side plate 42 rotates relative to the second shaft member 34.

[0047] In this embodiment, the number of the limiting mechanisms is two, including a first limiting mechanism 7 arranged on the same side as the corner adjuster 5 and a second limiting mechanism 8 arranged on the same side as the transfer sleeve 6. As Figures 3 to 7 shown, the first limiting mechanism 7 includes a first fixed stopper 71 and a first movable stopper 72. The first movable stopper 72 is fixed on the first side plate 41. A card slot 43 is formed on the first side plate 41 at the peripheral position of the rotating disk 52. The first movable stopper 72 is an arc-shaped piece, and one end is inserted and fixed into the card slot 43, and the other end extends away from the first side plate 41 and exceeds the surface of the osmanthus slice 35 in the direction of the axis L. When the armrest frame 4 rotates, the first movable stopper 72 will rotate around the axis L on the periphery of the fixed disk 51 and the osmanthus slice 35. The first fixed stopper 71 is formed at the edge of the osmanthus slice 35 and extends along the radial direction perpendicular to the axis L to the rotation path of the first movable stopper 72. It can be imagined that the first fixed stopper 71 can also be arranged on the fixed disk 51 of the corner adjuster 5, or the first movable stopper 72 can also be arranged on the rotating disk 52 of the corner adjuster 5.

[0048] As Figures 3 to 5As shown, the second limiting mechanism 8 includes a second fixed stopper 81 and a second movable stopper 82. The second fixed stopper 81 includes a fixed protrusion which is fixed on the outer circumferential surface of the second shaft member 34 and extends radially outward along the second shaft member 34. The second movable stopper 82 includes a movable protrusion which is fixed on the inner circumferential surface of the adapter sleeve 6 and extends radially inward along the adapter sleeve 6. In this embodiment, the number of the fixed protrusions is two, and they are fixedly spaced on the outer circumferential surface of the second shaft member 34. The positions of the two fixed protrusions determine the closed position and the designed open position of the armrest frame. The number of the movable protrusions is also two, and they are fixedly spaced on the inner circumferential surface of the adapter sleeve 6. It can be imagined that the number of the movable protrusions can also be one.

[0049] Regarding the working principles of the first limiting mechanism 7 and the second limiting mechanism 8, as Figures 8 to 10 shown:

[0050] When the armrest frame 4 is in the closed state, as shown in Figure 8 Figure (a) therein, the angle adjuster 5 is in the self-locking state. At this time, the state of the first limiting mechanism 7 is as shown in Figure 8 Figure (b) therein. The first fixed stopper 71 is on the upper side, the first movable stopper 72 is on the lower side, and the first fixed stopper 71 and the first movable stopper 72 are in a separated state. The state of the second limiting mechanism 8 is as shown in Figure 8 Figure (c) therein. The two fixed protrusions in the second fixed stopper 81 are respectively a first fixed protrusion 81a and a second fixed protrusion 81b, and the two movable protrusions in the second movable stopper 82 are respectively a first movable protrusion 82a and a second movable protrusion 82b. When the armrest frame 4 is in the closed state, the first fixed protrusion 81a is on the upper side, the second fixed protrusion 81b is on the lower side, the first movable protrusion 82a is on the upper side, and the second movable protrusion 82b is on the lower side. And the front side of the first fixed protrusion 81a along the clockwise direction is in contact with the rear side of the first movable protrusion 82a, and the front side of the second fixed protrusion 81b along the clockwise direction is in contact with the rear side of the second movable protrusion 82b.

[0051] When the angle adjuster 5 is unlocked, the first side plate 41 will rotate clockwise relative to the first hinge portion 31 along with the rotating disc 52 of the angle adjuster 5 (cooperating with Figure 7 shown), that is, the armrest frame 4 starts to rotate clockwise relative to the armrest bracket. Since the fixed stopper is fixed relative to the armrest bracket and the movable stopper is fixed relative to the armrest frame 4, when the armrest frame 4 rotates relative to the armrest bracket, the fixed stopper remains stationary, while the movable stopper will rotate along with the rotation of the armrest frame 4. Specifically, as shown in Figure 9 Figure (a) therein, when the armrest frame 4 rotates to the partially open state, the state of the first limiting mechanism 7 is as shown in Figure 9As shown in Figure (b) therein, the first fixed stopper 71 still remains on top, while the first movable stopper 72 swings clockwise by a certain angle, and the distance between it and the first fixed stopper 71 is somewhat reduced. The state of the second limiting mechanism 8 is as shown in Figure 9 Figure (c) therein. The first fixed protrusion 81a still remains on top, the second fixed protrusion 81b still remains at the bottom, while the first movable protrusion 82a and the second movable protrusion 82b swing clockwise by a certain angle, and the first movable protrusion 82a and the second movable protrusion 82b are respectively between the two sides of the first fixed protrusion 81a and the second fixed protrusion 82b.

[0052] When the armrest frame 4 rotates to the fully open state, as shown in Figure 10 Figure (a) therein, the state of the first limiting mechanism 7 is as shown in Figure 10 Figure (b) therein. The first fixed stopper 71 still remains on top, while the first movable stopper 72 continues to swing clockwise by a certain angle and comes into contact with the first fixed stopper 71, being blocked and limited by the first fixed stopper 71 to prevent the first side plate 41 from continuing to rotate. The state of the second limiting mechanism 8 is as shown in Figure 10 Figure (c) therein. The first fixed protrusion 81a still remains on top, the second fixed protrusion 81b still remains at the bottom, while the first movable protrusion 82a and the second movable protrusion 82b continue to swing clockwise by a certain angle, and the front side surface of the first movable protrusion 82a in the clockwise direction comes into contact with the rear side surface of the second fixed protrusion 81b, being blocked and limited by the second fixed protrusion 81b. At the same time, the front side surface of the second movable protrusion 82b in the clockwise direction comes into contact with the rear side surface of the first fixed protrusion 81a, being blocked and limited by the first fixed protrusion 81a. By the blocking and limiting of the second fixed stopper 81 on the second movable stopper 82, the second side plate 42 can be prevented from continuing to rotate.

[0053] By jointly limiting the armrest frame 4 through the first limiting mechanism 7 and the second limiting mechanism 8, it is ensured that the armrest frame 4 can stop stably in the fully open state. Moreover, through the double-protrusion limiting structure in the second limiting mechanism 8, two aspects of limiting functions can be achieved. On the one hand, it can prevent the armrest frame 4 from tipping backward when the armrest frame 4 is in the closed state, and on the other hand, it can prevent the armrest frame 4 from tilting forward when the armrest frame 4 is in the fully open state.

[0054] Second embodiment, in cooperation with Figure 11 shown: Compared with the first embodiment, the difference in this embodiment is that the number of limiting mechanisms in this embodiment is only one and is arranged on the same side as the angle adjuster 5, that is, it only includes the above-mentioned first limiting mechanism 7. The specific structure and working principle of the first limiting mechanism 7 are the same as those in the first embodiment and will not be elaborated here.

[0055] Third Embodiment, in coordination with Figure 12 As shown: Compared with the first embodiment, the difference in this embodiment is that the number of the limiting mechanisms is only one, and it is arranged on the same side as the adapter sleeve 6, that is, it only includes the above-mentioned second limiting mechanism 8. The specific structure and working principle of the second limiting mechanism 8 are the same as those of the first embodiment, and will not be elaborated here.

[0056] Fourth Embodiment, in coordination with Figure 13 As shown: Compared with the first embodiment, the difference in this embodiment is that angle adjusters 5 are installed on both the first side plate 41 and the second side plate 42, and the first side plate 41 and the first shaft member 33 are rotatably connected respectively through the angle adjusters 5, and the second side plate 42 and the first shaft member 33 are rotatably connected respectively through the angle adjusters 5. The number of the limiting mechanisms is two, and the two limiting mechanisms are arranged on the same side as the angle adjusters 5 on both sides respectively. The structures and working principles of the two limiting mechanisms are the same as those of the first limiting mechanism 7 in the first embodiment, and will not be elaborated here.

[0057] Fifth Embodiment, in coordination with Figure 14 As shown: Compared with the fourth embodiment, the difference in this embodiment is that the number of the limiting mechanisms is only one, and it is arranged on the same side as any one of the angle adjusters 5, and only unilateral limiting is realized. The installation of the two angle adjusters 5 is the same as that in the fourth embodiment, and the structure and working principle of the unilateral limiting mechanism are the same as those of the first limiting mechanism 7 in the fourth embodiment, and will not be elaborated here.

[0058] Sixth Embodiment and Seventh Embodiment, in coordination with Figure 15 and Figure 16 As shown, it can be seen from the figure that the above-mentioned first limiting mechanism 7 and second limiting mechanism 8 can be coordinated with the armrest frame 4 in different structural forms. Only the first mounting holes 411 for installing the angle adjusters 5 and the second mounting holes 421 for installing the adapter sleeve 6 need to be reserved on the armrest frame 4. Of course, the sixth embodiment and the seventh embodiment can also be deformed according to the second embodiment to the fifth embodiment.

[0059] By arranging the limiting mechanism between the armrest outer cover and the armrest frame, the present utility model does not need to occupy the space of the hinge part, and can greatly reduce the thickness dimension requirement of the armrest outer cover, and is applicable to the occasions with high requirements for the size of the armrest assembly, such as the 46-division armrest. Specifically, it can be compared with Figure 17 Figure 1(c) shows a 20% armrest with the limiting mechanism shown in Figure 1(b). Figure 17The armrest assembly with an internal limiting mechanism of the present utility model is shown. As can be seen from Fig. 1(c), when the armrest is in the closed position, the distance from the outer contour of the armrest bracket outer cover 23 to the rotation center O of the armrest is H2, and the thickness of the armrest outer cover 24 is L2. In this solution, 20% of the fixed limiting member 22 provided on the armrest bracket in the armrest (cooperating with Fig. 1(b) and Figure 4 shown) is moved to between the armrest outer cover 24 and the armrest skeleton 4 by an inward movement method (for example, in the form of a lotus slice 35). Compared with the external limiting mechanism design in Fig. 1(b), the armrest bracket in this solution only needs to be connected to the shaft member, so the distance H1 from the outer contour of the armrest bracket outer cover 23 to the rotation center O of the armrest is smaller, and the thickness L1 of the armrest outer cover can also be correspondingly reduced. That is, H2 > H1 and L2 > L1. Therefore, the design of the internal limiting mechanism in this solution can meet the limitation of the smaller thickness of the 46-point armrest. In addition, the present utility model provides two forms of limiting mechanisms, which can be selectively set according to needs, and the application is flexible and extensive.

[0060] The present utility model has been described in detail above in conjunction with the embodiments with the accompanying drawings. Those of ordinary skill in the art can make various variations to the present utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation to the present utility model, and the protection scope of the present utility model will be defined by the scope defined in the appended claims.

Claims

1. An armrest assembly with a built-in limiting mechanism, characterized in that: include: An armrest bracket formed on or fixed to the seat assembly, the armrest bracket comprising two hinged portions spaced apart, two shaft members being fixed to the two hinged portions; An armrest frame, the armrest frame is located between the two hinged parts, and the opposite sides of the armrest frame are rotatably connected to the two shaft members, respectively, wherein at least one of the opposite sides of the armrest frame is rotatably connected to the corresponding shaft member through a recliner to drive the armrest frame to rotate around the shaft member relative to the armrest bracket; A limiting mechanism is provided on at least one side of the armrest frame, and includes a fixed stopper fixed on the shaft member on the corresponding side, and a movable stopper fixed on the armrest frame. When the armrest frame is rotated to a designed open position relative to the armrest bracket, the movable stopper contacts the fixed stopper and is blocked and limited by the fixed stopper.

2. The armrest assembly with a built-in limiting mechanism as claimed in claim 1, characterized in that: One side of the armrest frame is rotatably connected to the shaft member on one side through an angle adjuster, and the other side of the armrest frame is rotatably connected to the shaft member on the other side through a fixedly connected adapter sleeve.

3. The armrest assembly with a built-in limiting mechanism as claimed in claim 2, characterized in that: The number of the limiting mechanism is one, and it is arranged on the same side as the angle adjuster.

4. The armrest assembly with a built-in limiting mechanism as claimed in claim 2, characterized in that: The number of the limiting mechanism is one, and it is arranged on the same side as the adapter sleeve.

5. The armrest assembly with built-in limiting mechanism as claimed in claim 2, characterized in that: The number of the limiting mechanisms is two, and they are respectively arranged on the same side as the angle adjuster and the adapter sleeve.

6. The armrest assembly with a built-in limiting mechanism as claimed in claim 1, characterized in that: The opposite sides of the armrest frame are rotatably connected to the two shaft members through angle adjusters.

7. The armrest assembly with a built-in limiting mechanism as claimed in claim 6, characterized in that: The number of the limiting mechanism is one, and it is arranged on the same side as the angle adjuster on any one side.

8. The armrest assembly with a built-in limiting mechanism as claimed in claim 6, characterized in that: The number of the limiting mechanisms is two, and they are respectively arranged on the same side as the angle adjusters on both sides.

9. The armrest assembly with a built-in limit mechanism according to any one of claims 3, 5, 7 and 8, characterized in that: The angle adjuster includes a fixed plate fixed to the shaft member on the corresponding side, and a rotating plate rotatably connected to the fixed plate, the rotating plate is fixed to the corresponding side of the armrest frame, the fixed stopper of the limiting mechanism arranged on the same side as the angle adjuster is fixed on the shaft member on the corresponding side or on the fixed plate, and the movable stopper is fixed on the rotating plate or on the armrest frame.

10. The armrest assembly with a built-in limiting mechanism as claimed in claim 9, characterized in that: A lotus root slice for fixing to the fixed plate is fixed on the shaft, and the fixed stopper is formed at the edge of the lotus root slice and extends to the rotation path of the movable stopper.

11. The armrest assembly with a built-in limiting mechanism according to claim 4 or 5, characterized in that: The fixed stopper of the limiting mechanism arranged on the same side as the adapter sleeve includes a fixed protrusion, which is fixed on the shaft member on the corresponding side and extends radially outward from the shaft member. The movable stopper includes a movable protrusion, which is fixed on the inner circumferential surface of the adapter sleeve and extends radially inward from the adapter sleeve.

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