Seat armrest, automobile seat and automobile

Abstract

The utility model belongs to the field of automobile seats, and provides a seat armrest, an automobile seat and an automobile, the automobile comprises the automobile seat, the automobile seat comprises the seat armrest, and the seat armrest comprises an armrest body, an angle adjuster and an unlocking mechanism; the angle adjuster comprises a fixed disc, a movable disc, a locking block, a cam piece and a driving shaft. The fixed disc is used for being connected with a seat body, a locking ring is arranged on the fixed disc, the movable disc is in rotatable fit with the fixed disc and connected with an armrest body, the locking block is in sliding fit with the movable disc in the radial direction of the rotating axis of the movable disc and clamped with the locking ring, and the cam piece is in linkage fit with the locking block; the unlocking mechanism is arranged on the armrest body and connected with the driving shaft. The position of the armrest body is unlocked and locked through separation and clamping of the locking block and the locking ring, when the armrest body is in an unlocked state, the movable disc can rotate clockwise and anticlockwise relative to the fixed disc, bidirectional adjustment of the armrest body is achieved, the adjustment efficiency is high, the adjustment stroke is large, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile seats, and more particularly to a seat armrest, an automobile seat and an automobile. BACKGROUND

[0002] The automobile seat armrest mainly provides support for the elbows of the user and is an important component of the automobile seat. The angle setting of the seat armrest is an important parameter of the comfort of the seat.

[0003] Most of the existing automobile seat armrests are angle-adjusted by a one-way adjusting ratchet and pawl mechanism, so that the seat armrest can only be adjusted to the limit position on one side before returning to the limit position on the other side, the adjustment efficiency is low, and the adjustment stroke is small. When the seat backrest is in a large-angle reclining state, for example, when the seat backrest is reclined by more than 120°, the armrest also reclines with the seat backrest, and the armrest cannot be adjusted to the horizontal position. This brings many inconveniences to the driver and passenger, greatly reduces the use comfort of the armrest, and the user experience is poor, which is difficult to apply to zero-gravity seats and other automobile seats that provide large-angle reclining adjustment. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiments of the application is to provide a seat armrest, an automobile seat and an automobile to solve the technical problems of low adjustment efficiency and small adjustment stroke of the automobile seat armrest in the prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows: in the first aspect, a seat armrest is provided, which comprises:

[0006] an armrest body;

[0007] an angle adjuster comprising a fixed disc, a movable disc, a locking block, a cam member and a drive shaft; the fixed disc is used to be connected with a seat body, the fixed disc has a locking ring thereon, the movable disc is rotationally matched with the fixed disc, the movable disc is connected with the armrest body, the locking block is slidingly matched with the movable disc along the radial direction of the rotation axis of the movable disc and is clamped with the locking ring, the cam member is linked with the locking block, and when the cam member rotates relative to the movable disc around the rotation axis, it drives the locking block to slide along the radial direction of the rotation axis to separate or clamp the locking block with the locking ring; the drive shaft is connected with the cam member;

[0008] an unlocking mechanism arranged on the armrest body and connected with the drive shaft for driving the drive shaft to rotate.

[0009] Optionally, the angle adjuster further comprises a hollow connecting shaft, which connects the armrest body and the movable disc along the rotation axis and movably sheaths the drive shaft.

[0010] Optionally, the moving disc is provided with a sliding groove, and the locking block is arranged in the sliding groove and slides along the radial direction of the rotation axis.

[0011] Optionally, the locking ring is arranged on the side of the fixed disc facing the moving disc and surrounds the locking block along the rotation axis, the locking ring is an inner gear ring, and the locking block is a tooth block.

[0012] Optionally, a plurality of locking blocks are arranged along the rotation axis at intervals, the plurality of locking blocks are clamped with the locking ring, and the cam member is linked with each locking block.

[0013] Optionally, the locking block and the cam member are provided with a movable groove and a protrusion, respectively, and the protrusion is slidably inserted into the movable groove along the rotation axis.

[0014] Optionally, the unlocking mechanism comprises a button assembly, a lever, an unlocking tab, a pull cable and a first reset member, the button assembly is movably arranged on the armrest body, the lever is rotatably arranged on the armrest body, one end of the lever is in contact with the button assembly, one end of the unlocking tab is connected with the driving shaft, two ends of the pull cable are connected with the other end of the lever and the other end of the unlocking tab, respectively, and the first reset member is arranged on the armrest body and abuts against the lever.

[0015] Optionally, one end of the driving shaft away from the cam member extends into the rear end of the armrest body, the unlocking tab is arranged in the rear end of the armrest body, the lever and the first reset member are arranged in the front end of the armrest body, the button assembly is arranged in the front end of the armrest body and at least partially exposed outside the armrest body.

[0016] The second aspect of the application provides an automobile seat, comprising the seat armrest.

[0017] The third aspect of the application provides an automobile, comprising the automobile seat.

[0018] The seat armrest, the automobile seat and the automobile provided by the application have the beneficial effects that compared with the prior art, when the angle of the armrest body needs to be adjusted, the cam member is driven to rotate around the rotation axis by the unlocking mechanism through the driving shaft, the locking block is separated from the locking ring along the radial direction of the rotation axis by the cam member, the movable disc can rotate around the rotation axis relative to the fixed disc, so as to realize the unlocking of the position of the armrest body, the armrest body is rotated around the rotation axis, so as to adjust the angle of the armrest body, after the armrest body is adjusted to the preset angle, the cam member is reversely rotated by the unlocking mechanism through the driving shaft, the gear block is engaged with the locking ring along the radial direction of the rotation axis by the cam member, so that the movable disc cannot rotate around the rotation axis relative to the fixed disc, and the position locking of the armrest body is realized. The seat armrest provided by the application realizes the unlocking and locking of the position of the armrest body by separating and engaging the locking block and the locking ring, when the armrest body is in the unlocked state, the movable disc can rotate clockwise and counterclockwise relative to the fixed disc, the bidirectional adjustment of the armrest body is realized, the adjustment efficiency is high, the adjustment stroke is large, the application range is wide, and the practicability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 The three-dimensional structure diagram of the seat armrest provided by the application Figure 1 ;

[0021] Figure 2 The sectional view structure diagram along the A-A line in the figure Figure 1 ;

[0022] Figure 3 The partial three-dimensional structure diagram of the seat armrest provided by the application Figure 1 ;

[0023] Figure 4 The sectional view structure diagram along the B-B line in the figure, wherein the cover is omitted Figure 3 ;

[0024] Figure 5 The partial three-dimensional structure diagram of the seat armrest provided by the application Figure 2 ;

[0025] Figure 6 The three-dimensional structure diagram of the seat armrest provided by the application Figure 2 ;

[0026] Figure 7Partially cutaway structural view of the unlocking mechanism provided by the embodiments of the present application.

[0027] Explanation of main reference numerals:

[0028] 10, handrail body; 11, handrail shell; 12, handrail framework; 121, first square hole; 122, positioning sheet; 13, handrail face cover; 14, handrail foaming layer;

[0029] 20, angle adjuster; 21, fixed disc; 211, locking ring; 22, moving disc; 221, second square hole; 222, sliding groove; 23, locking block; 231, protrusion; 24, cam member; 241, movable slot; 242, unlocking curved surface; 243, central hole; 25, driving shaft; 252, square part; 253, threaded part; 26, cover shell; 261, side plate; 262, isolation cover; 27, connecting shaft; 271, first square segment; 272, second square segment; 273, first threaded segment; 274, limiting stop ring; 28, first nut; 29, second nut;

[0030] 30, unlocking mechanism; 31, lever; 32, unlocking tab; 321, fixing hole; 33, pull cable; 34, key assembly; 341, key shell; 342, button; 343, second return member; 344, jacking rod; 35, first return member; a, rotation axis. DETAILED DESCRIPTION

[0031] In order to make the technical problems to be solved by the present application, the technical solutions and the beneficial effects clearer and more apparent, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0035] Please refer to Figures 1 to 7 The seat armrest provided by the embodiments of the present application will be described below.

[0036] Please refer to Figures 1 to 4 The seat armrest comprises an armrest body 10, an angle adjuster 20 and an unlocking mechanism 30. The angle adjuster 20 comprises a fixed disc 21, a movable disc 22, a locking block 23, a cam member 24 and a driving shaft 25. The fixed disc 21 is used to be connected with a seat body, and the fixed disc 21 is provided with a locking ring 211. The movable disc 22 is rotatably connected with the fixed disc 21, and the movable disc 22 is connected with the armrest body 10. The locking block 23 is slidably connected with the movable disc 22 along the radial direction of the rotation axis a of the movable disc 22, and the locking block 23 is engaged with the locking ring 211. The cam member 24 is connected with the locking block 23 in linkage, and the cam member 24 is rotated relative to the movable disc 22 around the rotation axis a to drive the locking block 23 to slide along the radial direction of the rotation axis a, so as to separate or engage the locking block 23 with the locking ring 211. The driving shaft 25 is connected with the cam member 24. The unlocking mechanism 30 is arranged on the armrest body 10, and the unlocking mechanism 30 is connected with the driving shaft 25 to drive the driving shaft 25 to rotate.

[0037] In the present embodiment, the rotation around the rotation axis a refers to the axial rotation around the rotation axis a, and the rotation along the rotation axis a refers to the axial rotation along the rotation axis a.

[0038] The fixed disc 21 is connected with the seat body, and the movable disc 22 is connected with the armrest body 10. When the locking block 23 is engaged with the locking ring 211, the locking block 23 cannot rotate relative to the locking ring 211 around the rotation axis a, so that the movable disc 22 cannot rotate relative to the fixed disc 21 around the rotation axis a, and further, the armrest body 10 cannot rotate relative to the seat body. That is, the angle of the armrest body 10 cannot be adjusted at this time, and the position of the armrest body 10 is locked. When the locking block 23 is separated from the locking ring 211, the locking block 23 can rotate relative to the locking ring 211 around the rotation axis a, so that the movable disc 22 can rotate relative to the fixed disc 21 around the rotation axis a, and further, the armrest body 10 can rotate relative to the seat body. That is, the angle of the armrest body 10 can be adjusted at this time, and the armrest body 10 is unlocked.

[0039] The locking ring 211 is arranged on the side of the fixed disc 21 facing the movable disc 22 and surrounds the locking block 23 around the rotation axis a, that is, the locking block 23 is located inside the locking ring 211. When the unlocking mechanism 30 drives the driving shaft 25 to rotate around the rotation axis a, the driving shaft 25 drives the cam member 24 to rotate around the rotation axis a synchronously, and the cam member 24 drives the locking block 23 to slide along the radial direction of the rotation axis a towards the inside or outside of the movable disc 22. When the locking block 23 slides along the radial direction of the rotation axis a towards the inside of the movable disc 22, the locking block 23 gradually moves away from the locking ring 211, so that the locking block 23 is separated from the locking ring 211; when the locking block 23 slides along the radial direction of the rotation axis a towards the outside of the movable disc 22, the locking block 23 gradually moves close to the locking ring 211, so that the locking block 23 is engaged with the locking ring 211. Wherein, the sliding of the locking block 23 along the radial direction of the rotation axis a towards the inside of the movable disc 22 refers to the sliding of the locking block 23 along the radial direction of the rotation axis a towards the direction close to the rotation axis a, and the sliding of the locking block 23 along the radial direction of the rotation axis a towards the outside of the movable disc 22 refers to the sliding of the locking block 23 along the radial direction of the rotation axis a towards the direction away from the rotation axis a.

[0040] Compared with the prior art, the seat armrest provided in the application needs to adjust the angle of the armrest body 10, and the unlocking mechanism 30 drives the cam member 24 to rotate around the rotation axis a through the driving shaft 25, the cam member 24 drives the locking block 23 to separate from the locking ring 211 along the radial direction of the rotation axis a, so that the movable disc 22 can rotate around the rotation axis a relative to the fixed disc 21, to realize the unlocking of the position of the armrest body 10, the armrest body 10 is rotated around the rotation axis a, to adjust the angle of the armrest body 10, after the armrest body 10 is adjusted to the preset angle, the cam member 24 is reversely rotated by the unlocking mechanism 30 through the driving shaft 25, the cam member 24 drives the locking block 23 to engage with the locking ring 211 along the radial direction of the rotation axis a, so that the movable disc 22 cannot rotate around the rotation axis a relative to the fixed disc 21, to realize the locking of the position of the armrest body 10. The seat armrest provided in the application realizes the unlocking and locking of the position of the armrest body 10 through the separation and engagement of the locking block 23 and the locking ring 211, when the position of the armrest body 10 is in the unlocked state, the movable disc 22 can rotate clockwise and counterclockwise relative to the fixed disc 21, to realize the bidirectional adjustment of the armrest body 10, the adjustment efficiency is high, and the armrest body 10 can be adjusted infinitely within the preset range, so that the adjustment stroke is large, the requirement that the armrest body 10 is adjusted to the horizontal position when the seat backrest is in the large-angle reclining state can be met, for example, when the seat backrest is reclined by more than 120°, the armrest body 10 can still be adjusted to the horizontal position, which is convenient for supporting the elbow of the user, is conducive to improving the use experience of the user, and has a wide application range and high practicability, for example, can be applied to zero-gravity seats and other automobile seats that provide large-angle reclining adjustment.

[0041] Please refer to Figure 1 andFigure 2 The handrail body 10 comprises a handrail shell 11, a handrail framework 12 and a handrail surface cover 13. The handrail framework 12 is arranged inside the handrail shell 11 and is used to strengthen the structural strength of the handrail shell 11. The handrail surface cover 13 is wrapped outside the handrail shell 11 and is used to protect the handrail shell 11.

[0042] Optionally, the handrail shell 11 is a plastic shell or the like.

[0043] Optionally, a handrail foaming layer 14 is arranged between the upper surface of the handrail shell 11 and the lower surface of the handrail surface cover 13. The handrail foaming layer 14 makes the upper part of the handrail body 10 softer and is conducive to improving the comfort of the elbow support of the handrail body 10 to the user.

[0044] In an embodiment of the present application, referring to Figure 1 and Figure 2 The angle adjuster 20 further comprises a cover 26. The cover 26 is used to be connected with the seat body. The fixed disc 21, the movable disc 22, the locking block 23 and the cam member 24 are arranged in the cover 26. The fixed disc 21 is connected with the cover 26. The driving shaft 25 penetrates the cover 26.

[0045] It can be understood that the fixed disc 21 is connected with the seat body through the cover 26. Of course, in the case that there is no cover 26, the fixed disc 21 can also be connected with the seat body, for example, the fixed disc 21 is connected with the backrest framework of the seat body through screws.

[0046] The above technical solution realizes the protection of the fixed disc 21, the movable disc 22, the locking block 23 and the cam member 24 and the like by accommodating them in the cover 26, which is conducive to improving the appearance of the angle adjuster 20.

[0047] Optionally, referring to Figure 2 and Figure 3 The cover 26 comprises a side plate 261 and a partition cover 262. The side plate 261 is connected with the seat body, for example, the side plate 261 is connected with the backrest framework of the seat body through screws. The partition cover 262 is connected with the side plate 261 and cooperates to form an inner cavity for accommodating the fixed disc 21, the movable disc 22, the locking block 23 and the cam member 24 and the like. The fixed disc 21 is connected with the side of the side plate 261 facing the partition cover 262, for example, the fixed disc 21 is welded with the side plate 261 and the like.

[0048] It should be noted that the angle adjuster 20 can be fixed inside the seat body or outside the seat body. In the embodiment, the angle adjuster 20 is arranged at the rear end of the armrest body 10 and inside the backrest cover of the seat body, the isolation cover 262 is arranged between the side plate 261 and the backrest cover, so as to isolate the movable disc 22 from the backrest cover and prevent the backrest cover from being damaged due to friction with the movable disc 22 when the movable disc 22 rotates.

[0049] In an embodiment of the present application, referring to Figure 2 and Figure 3 , the driving shaft 25 extends along the rotation axis a in the axial direction, and the angle adjuster 20 further comprises a hollow connecting shaft 27, the connecting shaft 27 connects the armrest body 10 and the movable disc 22 along the rotation axis a and movably sheaths the driving shaft 25.

[0050] Optionally, one end of the connecting shaft 27 extends into the armrest body 10 and is fixedly connected with the armrest framework 12, and the other end of the connecting shaft 27 extends into the cover 26 and is fixedly connected with the movable disc 22. It can be understood that the movable disc 22 is connected with the armrest body 10 through the connecting shaft 27. Of course, in the absence of the connecting shaft 27, the movable disc 22 can be directly connected with the armrest body 10.

[0051] For example, the connecting shaft 27 comprises a first square segment 271 and a second square segment 272, the first square segment 271 and the second square segment 272 are connected along the rotation axis a, the armrest framework 12 is provided with a first square hole 121, the movable disc 22 is provided with a second square hole 221, the first square segment 271 is adaptively inserted into the first square hole 121, so that the first square segment 271 cannot rotate around the rotation axis a relative to the first square hole 121, and further so that the connecting shaft 27 cannot rotate around the rotation axis a relative to the armrest body 10. The second square segment 272 is adaptively inserted into the second square hole 221, so that the second square segment 272 cannot rotate relative to the second square hole 221, and further so that the connecting shaft 27 cannot rotate around the rotation axis a relative to the movable disc 22. It can be understood that the armrest body 10 drives the connecting shaft 27 to rotate synchronously when the armrest body 10 rotates around the rotation axis a, and the connecting shaft 27 drives the movable disc 22 to rotate synchronously when the connecting shaft 27 rotates, that is, when the angle of the armrest body 10 is adjusted, the armrest body 10 drives the movable disc 22 to rotate around the rotation axis a relative to the fixed disc 21 through the connecting shaft 27.

[0052] Further, the connecting shaft 27 further comprises a first threaded segment 273, the first threaded segment 273 is connected with one end of the first square segment 271 away from the second square segment 272, and after the first threaded segment 273 passes through the first square hole 121, a first nut 28 is used to cooperatively connect with the first threaded segment 273, so as to prevent the connecting shaft 27 from being separated from the first square hole 121 along the rotation axis a.

[0053] Further, the connecting shaft 27 further comprises a limiting block ring 274, which is connected to one end of the second square section 272 away from the first square section 271, and abuts against one side of the movable disc 22 facing the fixed disc 21, so as to prevent the connecting shaft 27 from being separated from the second square hole 221 along the rotation axis a.

[0054] Of course, in other embodiments, the two ends of the connecting shaft 27 can be welded to the movable disc 22 and the handrail body 10 respectively.

[0055] In an embodiment of the present application, referring to Figure 3 and Figure 4 , the movable disc 22 is provided with a sliding groove 222, which is arranged on one side of the movable disc 22 facing the fixed disc 21 and extends along the radial direction of the rotation axis a, and the locking block 23 is arranged in the sliding groove 222 along the radial direction of the rotation axis a.

[0056] The above technical solution enables the locking block 23 to slide along the radial direction of the rotation axis a in the sliding groove 222 relative to the movable disc 22, but restricts the locking block 23 from rotating relative to the movable disc 22 around the rotation axis a, so that the locking block 23 can be driven by the cam member 24 to move along the radial direction of the rotation axis a in the sliding groove 222 to approach or move away from the locking ring 211, and when the movable disc 22 rotates relative to the fixed disc 21 around the rotation axis a, the movable disc 22 drives the locking block 23 to rotate synchronously, and the locking block 23 drives the cam member 24 and the driving shaft 25 to rotate synchronously. It can be understood that when the movable disc 22 rotates relative to the fixed disc 21 around the rotation axis a, the movable disc 22 drives the locking block 23, the cam member 24 and the driving shaft 25 to rotate synchronously.

[0057] In other embodiments, a guide rail extending along the radial direction of the rotation axis a can be arranged on the movable disc 22, and a guide groove extending along the radial direction of the rotation axis a can be arranged on the locking block 23, and the guide groove and the guide rail are connected to slide along the radial direction of the rotation axis a, so as to realize the sliding fit of the locking block 23 and the movable disc 22 along the radial direction of the rotation axis a, and restrict the locking block 23 from rotating relative to the movable disc 22 around the rotation axis a.

[0058] In an embodiment of the present application, referring to Figure 1 , the locking ring 211 is an inner gear ring, and the locking block 23 is a tooth block, which is engaged with the inner gear ring.

[0059] Specifically, the inner side of the locking ring 211 is formed with a plurality of inner teeth distributed around the rotation axis a, and the outer side of the locking block 23 is formed with a plurality of outer teeth distributed around the rotation axis a. It can be understood that the engagement between the locking block 23 and the locking ring 211 means that the outer teeth on the locking block 23 are engaged with the inner teeth on the locking ring 211 around the rotation axis a. When the locking block 23 is engaged with the locking ring 211, the locking block 23 cannot rotate relative to the locking ring 211 around the rotation axis a, so that the movable disc 22 cannot rotate relative to the fixed disc 21 around the rotation axis a, thereby achieving the position locking of the handrail body 10. When the locking block 23 is separated from the locking ring 211, the locking block 23 can rotate relative to the locking ring 211 around the rotation axis a, so that the movable disc 22 can rotate relative to the fixed disc 21 around the rotation axis a, thereby achieving the position unlocking of the handrail body 10. Wherein, the separation of the locking block 23 from the locking ring 211 means that the outer teeth on the locking block 23 are separated from the inner teeth on the locking ring 211.

[0060] In another embodiment of the present application, the locking ring 211 can be a magnetic ring, and the locking block 23 is a magnetic block. The position locking of the handrail body 10 is achieved by the magnetic attraction between the magnetic block and the magnetic ring, and the position unlocking of the handrail body 10 is achieved by the separation of the magnetic block from the magnetic ring. Alternatively, the inner side of the locking ring 211 is formed with a plurality of clamping grooves distributed around the rotation axis a, and the outer side of the locking block 23 is formed with a plurality of clamping protrusions distributed around the rotation axis a. The position locking of the handrail body 10 is achieved by clamping the clamping protrusions into the clamping grooves, and the position unlocking of the handrail body 10 is achieved by separating the clamping protrusions from the clamping grooves. Alternatively, the inner side of the locking ring 211 is formed with a plurality of clamping protrusions distributed around the rotation axis a, and the outer side of the locking block 23 is formed with a plurality of clamping grooves distributed around the rotation axis a. The position locking of the handrail body 10 is achieved by clamping the clamping protrusions into the clamping grooves, and the position unlocking of the handrail body 10 is achieved by separating the clamping protrusions from the clamping grooves.

[0061] In an embodiment of the present application, please refer to Figure 1 and Figure 5 The number of locking blocks 23 is a plurality, and the plurality of locking blocks 23 are spaced apart around the rotation axis a. The plurality of locking blocks 23 are clamped with the locking ring 211, and the cam member 24 is linked with each locking block 23.

[0062] The above technical solution has the advantages that the plurality of locking blocks 23 are clamped with the locking ring 211, which is conducive to enhancing the stability of the locking of the handrail body 10.

[0063] Optionally, the movable disc 22 is provided with four sliding grooves 222, and the four sliding grooves 222 are uniformly and spaced apart around the rotation axis a. The number of locking blocks 23 is also four, and the four locking blocks 23 are respectively and slidingly arranged in the four sliding grooves 222.

[0064] In an embodiment of the present application, please refer to Figure 4The cam member 24 is provided with a movable groove 241, and the locking block 23 is provided with a protrusion 231 which is slidingly inserted into the movable groove 241 around the rotation axis a. When the cam member 24 rotates around the rotation axis a relative to the driving plate 22, the protrusion 231 slides around the rotation axis a in the movable groove 241, and under the guidance of the movable groove 241, the locking block 23 slides along the radial direction of the rotation axis a, so that the locking block 23 is separated from or engaged with the locking ring 211, thereby unlocking or locking the position of the handrail body 10. For example, when the cam member 24 rotates clockwise around the rotation axis a relative to the driving plate 22 under the driving of the driving shaft 25, the protrusion 231 slides along the radial direction of the rotation axis a under the guidance of the movable groove 241, so that the locking block 23 slides inward along the radial direction of the rotation axis a, and the locking block 23 is separated from the locking ring 211, thereby unlocking the position of the handrail body 10; when the cam member 24 rotates counterclockwise around the rotation axis a relative to the driving plate 22 under the driving of the driving shaft 25, the protrusion 231 slides along the radial direction of the rotation axis a under the guidance of the movable groove 241, so that the locking block 23 slides outward along the radial direction of the rotation axis a, and the locking block 23 is engaged with the locking ring 211, thereby locking the handrail body 10.

[0065] The above technical solution slidingly inserts the protrusion 231 into the movable groove 241 around the rotation axis a, thereby realizing the linkage and cooperation between the cam member 24 and the locking block 23, so that when the cam member 24 rotates around the rotation axis a relative to the driving plate 22, the protrusion 231 and the movable groove 241 are cooperated to drive the locking block 23 to slide along the radial direction of the rotation axis a, so that the locking block 23 is separated from or engaged with the locking ring 211, thereby unlocking or locking the position of the handrail body 10, and the structure is simple and reasonable.

[0066] Optionally, the side of the movable groove 241 away from the rotation axis a is formed with an unlocking curved surface 242 which gradually approaches the rotation axis a around the rotation axis a, and the protrusion 231 abuts against the unlocking curved surface 242. When the cam member 24 rotates around the rotation axis a relative to the driving plate 22, the protrusion 231 gradually approaches or moves away from the rotation axis a along the radial direction of the rotation axis a under the guidance of the unlocking curved surface 242, thereby driving the locking block 23 to gradually move away from or approach the locking ring 211 along the radial direction of the rotation axis a, thereby realizing the unlocking or locking of the handrail body 10.

[0067] In another embodiment of the present application, the cam member 24 is provided with the protrusion 231, and the locking block 23 is provided with the movable groove 241, and the protrusion 231 is slidingly inserted into the movable groove 241 around the rotation axis a.

[0068] When the number of the locking blocks 23 is multiple, each locking block 23 is provided with the protrusion 231, and the cam member 24 is provided with movable grooves 241 equal to the number of the locking blocks 23, and the protrusions 231 on the multiple locking blocks 23 are respectively and slidingly inserted into the multiple movable grooves 241 around the rotation axis a.

[0069] In an embodiment of the present application, referring to Figure 4 The driving shaft 25 is inserted into the cam member 24. For example, the cam member 24 is provided with a central hole 243, and the circumferential side wall of the central hole 243 is provided with a plurality of clamping grooves. The circumferential side wall of the driving shaft 25 is provided with a plurality of clamping protrusions. One end of the driving shaft 25 is inserted into the central hole 243. The plurality of clamping protrusions on the driving shaft 25 are clamped into the plurality of clamping grooves of the central hole 243 one by one. The relative position between the driving shaft 25 and the cam member 24 around the rotation axis a is limited. When the driving shaft 25 rotates around the rotation axis a, the cam member 24 is driven to rotate synchronously.

[0070] In an embodiment of the present application, referring to Figure 1 and Figure 5 The unlocking mechanism 30 includes a key assembly 34, a lever 31, an unlocking tab 32, a pull cable 33, and a first reset member 35. The key assembly 34 is movably arranged on the armrest body 10. The lever 31 is rotatably arranged on the armrest body 10. One end of the lever 31 is in corresponding contact with the key assembly 34. One end of the unlocking tab 32 is connected with the driving shaft 25. The two ends of the pull cable 33 are respectively connected with the other end of the lever 31 and the other end of the unlocking tab 32. The first reset member 35 is arranged on the armrest body 10 and is in abutment with the lever 31.

[0071] When the key assembly 34 is pressed, the key assembly 34 abuts against one end of the lever 31 and drives the lever 31 to rotate. When the lever 31 rotates, the lever 31 drives the first reset member 35 to accumulate elastic force. At the same time, the lever 31 drives the unlocking tab 32 to rotate around the rotation axis a through the pull cable 33. The unlocking tab 32 drives the driving shaft 25 to rotate around the rotation axis a. The driving shaft 25 drives the cam member 24 to rotate around the rotation axis a. The cam member 24 drives the locking block 23 to separate from the locking ring 211, thereby unlocking the position of the armrest body 10. After the armrest body 10 is adjusted to a preset angle, the key assembly 34 is released. The first reset member 35 releases the elastic force and drives the lever 31 to reset. The lever 31 drives the unlocking tab 32 to reversely rotate around the rotation axis a through the pull cable 33. The unlocking tab 32 drives the driving shaft 25 to reversely rotate around the rotation axis a. The driving shaft 25 drives the cam member 24 to reversely rotate around the rotation axis a. The cam member 24 drives the locking block 23 to engage with the locking ring 211, thereby locking the position of the armrest body 10.

[0072] The above technical solution drives the driving shaft 25 to rotate through the cooperation of the lever 31, the unlocking tab 32, the pull cable 33, the key assembly 34, and the first reset member 35, thereby unlocking and locking the position of the armrest body 10. The structure design is reasonable, the operation is simple, and it is conducive to improving the user's experience.

[0073] Optionally, one end of the cable 33 is clamped and fixed to the end of the lever 31 away from the button assembly 34, and the other end of the cable 33 is clamped and fixed to the end of the unlocking paddle 32 away from the drive shaft 25. A plurality of positioning plates 122 are provided on the armrest frame 12, and the plurality of positioning plates 122 are spaced apart between the lever 31 and the unlocking paddle 32. Positioning holes are provided on the positioning plates 122, and the cable 33 is passed through the positioning holes on the positioning plates 122 to position the cable 33 and prevent the cable 33 from sinking.

[0074] In one embodiment of this application, see Figure 5 and Figure 6 The end of the drive shaft 25 away from the cam member 24 extends to the rear end of the armrest body 10, the unlocking paddle 32 is arranged in the rear end of the armrest body 10, the lever 31 and the first reset member 35 are arranged in the front end of the armrest body 10, and the button assembly 34 is arranged at the front end of the armrest body 10 and is at least partially exposed to the armrest body 10.

[0075] For example, the lever 31 is rotatably disposed on the armrest frame 12, the first reset member 35 is disposed on the armrest frame 12, a movable opening is provided on the armrest body 10, a portion of the button assembly 34 is located inside the front end of the armrest body 10 to contact one end of the lever 31, and the other portion extends to the outside of the armrest body 10 through the movable opening.

[0076] The above technical solution protects and hides the lever 31, the unlocking paddle 32, the cable 33 and the first reset member 35 by accommodating the lever 31, the unlocking paddle 32, the cable 33 and the first reset member 35 in the armrest body 10, while making full use of the internal space of the armrest body 10. The button assembly 34 is arranged at the front end of the armrest body 10 and is at least partially exposed to the armrest body 10, which makes it convenient for the user to press the button assembly 34 to unlock the door, and the operation is convenient.

[0077] Optionally, one end of the drive shaft 25 extending into the armrest body 10 has a square portion 252, and one end of the unlocking paddle 32 is provided with a fixing hole 321, which is a square hole. The square portion 252 of the drive shaft 25 is adapted to be plugged into the fixing hole 321.

[0078] Furthermore, one end of the drive shaft 25 extending into the armrest body 10 also has a threaded portion 253. After the threaded portion 253 passes through the fixing hole 321, a second nut 29 is used to cooperate with the threaded portion 253 to prevent the drive shaft 25 from disengaging from the fixing hole 321 along the rotation axis a.

[0079] Optionally, the first restoring member 35 is a torsion spring or other elastic member.

[0080] In one embodiment of this application, see Figure 6The key assembly 34 is exposed at the bottom of the front end of the armrest body 10.

[0081] The key assembly 34 is exposed at the bottom of the front end of the armrest body 10, so that the key assembly 34 is hidden, and the user's elbow or hand is prevented from being supported on the armrest body 10 to mistakenly touch the key assembly 34.

[0082] In an embodiment of the present application, referring to Figure 7 The key assembly 34 includes a key shell 341, a button 342, and a second reset member 343. The key shell 341 is fixed on the armrest body 10. The button 342 is movably connected with the key shell 341 and is in contact with one end of the lever 31. The second reset member 343 is arranged between the key shell 341 and the button 342. The button 342 is exposed to the armrest body 10 through a movable opening in the armrest body 10.

[0083] For example, the button 342 is slidably connected with the key shell 341 in the vertical direction. The bottom of the key shell 341 can be clamped with the button 342 to prevent the button 342 from being separated from the key shell 341.

[0084] When a pressure is applied to the button 342 towards the inside of the key shell 341, the button 342 moves upward relative to the key shell 341. The button 342 abuts against and drives the lever 31 to rotate counterclockwise, so that the position of the armrest body 10 is unlocked. At the same time, the button 342 drives the second reset member 343 to accumulate elastic force. When the force applied to the button 342 is removed, the second reset member 343 releases the elastic force. The second reset member 343 drives the button 342 to move downward and reset. The lever 31 is reversely rotated and reset under the action of the first reset member 35, so that the position of the armrest body 10 is locked.

[0085] Optionally, the button 342 is provided with a top rod 344. One end of the top rod 344 is in contact with one end of the lever 31. That is, when the button 342 is pressed towards the inside of the key shell 341, the button 342 abuts against and drives the lever 31 to rotate through the top rod 344.

[0086] Optionally, the second reset member 343 is a spiral spring or a tension spring. As an example, the second reset member 343 is a spiral spring. The spiral spring can be movably sleeved on the top rod 344.

[0087] In order to realize the miniaturization of the button 342 and reduce the space occupation of the armrest body 10, it is necessary to reduce the movement stroke of the button 342 and the length of the button 342 as much as possible, and it is required that the movement stroke range of the button 342 is less than or equal to 10 mm, the length range of the button 342 is less than or equal to 45 mm, the button 342 is suitable for two-finger pressing operation of the user, and the unlocking pressing force is less than or equal to 40 N. Through the test and correction results, the unlocking pressing force range is set to 25 N-40 N, which can better meet the human-computer operation demand.

[0088] The application also provides an automobile seat, which comprises the seat armrest of any one of the above embodiments.

[0089] The automobile seat provided by the application adopts the seat armrest, the seat armrest is separated and clamped from the locking block 23 and the locking ring 211, the position of the armrest body 10 is unlocked and locked, when the position of the armrest body 10 is in the unlocked state, the movable disc 22 can rotate clockwise and counterclockwise relative to the fixed disc 21, the armrest body 10 is bidirectionally adjusted, the adjustment efficiency is high, the adjustment stroke is large, the requirement that the armrest body 10 is adjusted to the horizontal position when the seat backrest is in a large angle reclining state can be met, the elbow of the user is conveniently supported, the use experience of the user is improved, and the application range is wide and the practicality is strong.

[0090] The application also provides an automobile, which comprises the automobile seat.

[0091] The automobile provided by the application adopts the automobile seat, so as to at least have the beneficial effects of the automobile seat.

[0092] The above only describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A chair armrest, characterized in that: The armrest comprises: an armrest body; a recliner comprising a fixed disc, a movable disc, a locking block, a cam member and a driving shaft; the fixed disc is used to be connected with a seat body, the fixed disc is provided with a locking ring, the movable disc is rotationally connected with the fixed disc, the movable disc is connected with the armrest body, the locking block is slidably connected with the movable disc along a radial direction of a rotation axis of the movable disc and is engaged with the locking ring, the cam member is connected with the locking block, and the cam member drives the locking block to slide along the radial direction of the rotation axis when the cam member rotates relative to the movable disc around the rotation axis, so as to separate or engage the locking block with the locking ring; the driving shaft is connected with the cam member; an unlocking mechanism is arranged on the armrest body and connected with the driving shaft, and is used to drive the driving shaft to rotate.

2. The armrest of claim 1, wherein: The recliner further comprises a hollow connecting shaft, the connecting shaft connects the armrest body and the movable disc along the rotation axis and movably covers the driving shaft.

3. The armrest of claim 1, wherein: The movable disc is provided with a sliding groove, and the locking block is arranged in the sliding groove along the radial direction of the rotation axis.

4. The armrest of claim 1, wherein: The locking ring is arranged on a side of the fixed disc facing the movable disc and surrounds the locking block around the rotation axis, the locking ring is an inner gear ring, and the locking block is a tooth block, the tooth block is engaged with the inner gear ring.

5. The armrest of claim 1, wherein: The number of the locking blocks is plural, the plural locking blocks are distributed around the rotation axis at intervals, the plural locking blocks are all engaged with the locking ring, and the cam member is connected with each locking block.

6. The armrest of claim 1, wherein: An active groove is arranged on one of the locking block and the cam member, and a protrusion is arranged on the other one, the protrusion is slidably inserted into the active groove around the rotation axis.

7. A seat armrest as claimed in any one of claims 1 to 6, characterised in that: The unlocking mechanism comprises a button assembly, a lever, an unlocking tab, a cable and a first reset member, the button assembly is movably arranged on the armrest body, the lever is rotatably arranged on the armrest body, one end of the lever is in contact with the button assembly, one end of the unlocking tab is connected with the driving shaft, two ends of the cable are respectively connected with the other end of the lever and the other end of the unlocking tab, and the first reset member is arranged on the armrest body and abuts against the lever.

8. The armrest of claim 7, wherein: One end of the driving shaft away from the cam member extends into a rear end of the armrest body, the unlocking tab is arranged in the rear end of the armrest body, the lever and the first reset member are arranged in a front end of the armrest body, the button assembly is arranged in the front end of the armrest body and at least partially exposed outside the armrest body.

9. An automobile seat characterized by comprising: The seat comprises the armrest as claimed in any one of claims 1-8.

10. An automobile characterized by comprising: The car seat comprises the armrest as claimed in claim 9.

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