CN217743683U - Seat armrest assembly and seat - Google Patents

Abstract

The utility model belongs to the seat field, especially, relate to a seat handrail subassembly and seat, the seat includes the seat handrail subassembly, the seat handrail subassembly includes the seat skeleton, first handrail, damping fin and fastener, be equipped with the connecting hole on the lateral part of seat skeleton, first handrail includes cantilever and pivot, the pivot is connected with the cantilever, the pivot activity is inserted in the connecting hole, so that the pivot can rotate relative to the seat skeleton, the damping fin is located between seat skeleton and the cantilever, the relative both sides face of damping fin respectively with seat skeleton and cantilever contact, the fastener card is established on the lateral part that the seat skeleton deviates from the damping fin, and with pivot threaded connection. When the user rotates the cantilever, the damping fin provides frictional damping force for the rotation of the cantilever relative to the seat frame. The user accessible adjustment fastener spiro union is in the elasticity degree of pivot, adjusts the cantilever and acts on the positive pressure on the damping piece, and positive pressure is directly proportional with the damping force, so just realize the regulation of damping force size to satisfy different user's demand.

Description

Seat armrest assembly and seat

Technical Field

The application belongs to the technical field of seats, and particularly relates to a seat armrest assembly and a seat.

Background

Seat armrest subassembly includes seat skeleton and handrail usually, and the handrail rotates to be connected in seat skeleton, and concrete implementation does, and the handrail is equipped with the handrail axle, and the annular has been seted up to the handrail axle, establishes O type circle at the annular endotheca, then inserts the seat skeleton with the handrail axle in, so just realize that the handrail is connected with seat skeleton's rotation, and wherein, the clearance between O type circle sealed handrail axle and the seat skeleton provides certain frictional damping force for the handrail rotates for seat skeleton. Because the clearance between handrail axle and the seat skeleton can not be adjusted, lead to the size of handrail relative seat skeleton pivoted damping force unable regulation, can not satisfy different users' demand.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a seat armrest subassembly and seat, aim at solving the unable technical problem who adjusts of relative seat skeleton pivoted damping force of handrail among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a seat armrest component comprises a seat framework, a first armrest, a damping sheet and a fastener, wherein a connecting hole is formed in the side part of the seat framework; the first armrest comprises a cantilever and a rotating shaft, the rotating shaft is connected with the cantilever, and the rotating shaft is movably inserted into the connecting hole so as to enable the rotating shaft to rotate relative to the seat framework; the damping fin is arranged between the seat framework and the cantilever, and two opposite side surfaces of the damping fin are respectively contacted with the seat framework and the cantilever; the fastener is clamped on the side part of the seat framework, which is far away from the damping fin, and is in threaded connection with the rotating shaft.

Furthermore, the damping sheet is annular and is sleeved on the rotating shaft.

Further, the damping fin is a plastic gasket.

Further, the cantilever includes the arm body and the butt piece that are connected, and the butt piece is connected with the pivot, forms the ladder face between pivot and the butt piece, damping fin and ladder face contact.

Furthermore, a threaded hole is formed in the rotating shaft, the fastener comprises a clamping block and a threaded column which are connected, the clamping block is clamped on the side portion, departing from the damping sheet, of the seat framework, and the threaded column is inserted into the threaded hole and is in threaded connection with the threaded hole.

Furthermore, the seat armrest component also comprises a gasket, and the gasket is connected between the clamping block and the seat framework and sleeved on the threaded column.

Furthermore, the seat armrest component also comprises a plane bearing, and the plane bearing is connected between the clamping block and the gasket and sleeved on the threaded column.

Further, be provided with the adapter sleeve on the lateral part that the seat skeleton deviates from the damping fin, the connecting hole runs through the adapter sleeve, the fastener card is established on the adapter sleeve, set up the first hole of wearing to establish of intercommunication connecting hole on the week lateral part of adapter sleeve, first hole of wearing to establish sets up along the circumference of adapter sleeve and is the bar form, the armrest subassembly still includes the locating part, the one end of locating part is passed first hole of wearing to establish and is connected with the pivot, and the locating part can be followed the circumference of adapter sleeve and is moved in first hole of wearing to establish.

Furthermore, a second through hole is formed in the periphery of the rotating shaft, the first through hole is communicated with the second through hole, and one end of the limiting piece penetrates through the first through hole and is in threaded connection with the second through hole.

The application provides a seat armrest subassembly's beneficial effect lies in: compared with the prior art, the seat armrest subassembly of this application is when the equipment, locate between the cantilever of first handrail and the seat skeleton with the damping fin, insert the pivot of first handrail in the connecting hole of seat skeleton again, make the relative both sides face of damping fin respectively with seat skeleton and cantilever contact, then locate the fastener card on the lateral part that the seat skeleton deviates from the damping fin, and the screw thread is screwed up in the pivot, make the damping fin press from both sides between seat skeleton and cantilever, when the user rotated the cantilever, the damping fin provides frictional damping force for the cantilever rotates for the seat skeleton. The user accessible adjustment fastener spiro union is in the elasticity degree of pivot, adjusts the cantilever and acts on the positive pressure on the damping fin, and positive pressure is directly proportional with the damping force, just so can realize the regulation of the damping force size between first handrail and the seat skeleton to can satisfy different user's demand.

The present application further provides a seat, including foretell armrest assembly, armrest assembly still includes the second handrail, and first handrail and second handrail are connected respectively in the relative both sides portion of seat skeleton, and wherein, for first handrail, when the user rotated the cantilever, the damping fin provided frictional damping force for the cantilever rotates relative to seat skeleton. The user accessible adjustment fastener spiro union is in the elasticity degree of pivot, adjusts the cantilever and acts on the positive pressure on the damping piece, and positive pressure is directly proportional with the damping force, so just realize the regulation of the damping force size between first handrail and the seat skeleton to can satisfy different user's demand.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of a seat armrest assembly provided in an embodiment of the present application;

FIG. 2 is an enlarged fragmentary view of the seat arm assembly shown in FIG. 1 at A;

FIG. 3 is an exploded view of the seat armrest assembly shown in FIG. 1;

fig. 4 is an enlarged view of a portion of the seat armrest assembly shown in fig. 3 at B.

Wherein, in the figures, the respective reference numerals:

10. a seat frame; 11. connecting holes; 12. connecting sleeves; 121. a first through hole;

20. a first armrest; 21. a cantilever; 211. an arm body; 212. a butting block; 22. a rotating shaft; 221. a threaded hole; 222. a second through hole; 23. a step surface;

30. a damping fin;

40. a fastener; 41. a bit block; 42. a threaded post;

50. a gasket;

60. a flat bearing;

70. a limiting member;

80. a second handrail.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The embodiment of the application provides a seat armrest component, which is mainly applied to seats, the types of the seats are not limited, and the seat armrest component can be dental chairs, meeting chairs, computer chairs, electronic contest chairs, office chairs, massage chairs, cinema chairs and the like according to different application scenes and functions.

Referring to fig. 1 to 4, the armrest assembly includes a seat frame 10, a first armrest 20, a damping plate 30 and a fastening member 40, wherein a connection hole 11 is formed on a side portion of the seat frame 10. The first armrest 20 includes a suspension arm 21 and a rotation shaft 22, the rotation shaft 22 is connected to the suspension arm 21, and the rotation shaft 22 is movably inserted into the connection hole 11, so that the rotation shaft 22 can rotate relative to the seat frame 10. The damper 30 is provided between the seat frame 10 and the suspension arm 21, and opposite side surfaces of the damper 30 are in contact with the seat frame 10 and the suspension arm 21, respectively. The fastening member 40 is engaged with the seat frame 10 on the side facing away from the damper 30 and is screwed to the rotary shaft 22.

Compared with the prior art, when the seat armrest assembly is assembled, the damping sheet 30 is arranged between the cantilever 21 of the first armrest 20 and the seat frame 10, the rotating shaft 22 of the first armrest 20 is inserted into the connecting hole 11 of the seat frame 10, so that the two opposite side surfaces of the damping sheet 30 are respectively contacted with the seat frame 10 and the cantilever 21, then the fastening piece 40 is clamped on the side portion, away from the damping sheet 30, of the seat frame 10, and is screwed on the rotating shaft 22, so that the damping sheet 30 is clamped between the seat frame 10 and the cantilever 21, and the assembly of the seat frame 10 and the first armrest 20 is completed. As the user rotates the suspension arm 21, the damper 30 provides a frictional damping force to the rotation of the suspension arm 21 relative to the seat frame 10. The user can adjust the positive pressure applied to the damping fin 30 by the cantilever 21 by adjusting the tightness degree of the fastening member 40 screwed to the rotating shaft 22, and the positive pressure is in direct proportion to the damping force, so that the damping force between the first armrest 20 and the seat frame 10 can be adjusted, and the requirements of different users can be met.

It should be understood that the fastening member 40 is clamped on the side of the seat frame 10 away from the damper 30, which means that the fastening member 40 can abut against the side of the seat frame 10 away from the damper 30 without entering into the connecting hole 11, so as to ensure that the fastening member 40 and the cantilever 21 can clamp the damper 30 and the seat frame 10 from two opposite sides of the connecting hole 11. In the normal operation process of the seat armrest assembly, the fastening member 40 and the suspension arm 21 always clamp the seat frame 10 and the damping fin 30 from the two opposite sides of the connecting hole 11, so that the two opposite sides of the damping fin 30 always contact with the seat frame 10 and the suspension arm 21, and a damping force is provided for the rotation of the suspension arm 21 relative to the seat frame 10.

Note that, the damper 30 may be fixedly attached to the seat frame 10, and a side surface of the damper 30 may be in frictional contact with the suspension arm 21, in which case, the damping force may be a frictional force between the damper 30 and the suspension arm 21. Alternatively, the damper 30 is fixedly connected to the suspension arm 21, and the side surface of the damper 30 is in frictional contact with the seat frame 10, in which case the damping force is the frictional force between the damper 30 and the seat frame 10. Alternatively, the opposite side surfaces of the damper 30 are in frictional contact with the seat frame 10 and the suspension arm 21, respectively, and the damper 30 is movably connected to the rotating shaft 22 and is movable along the axial direction of the rotating shaft 22. The specific matching relationship between the damper 30 and the seat frame 10 and the suspension arm 21 is not limited, as long as the damper 30 is located between the seat frame 10 and the suspension arm 21, and the damper 30 is in frictional contact with at least one of the suspension arm 21 and the seat frame 10.

Specifically, in the present embodiment, the two opposite side surfaces of the damping fin 30 are in frictional contact with the seat frame 10 and the suspension arm 21, respectively, and a user can adjust the magnitude of the positive pressure applied to the damping fin 30 by adjusting the tightness degree of the fastening member 40 screwed to the rotating shaft 22, so as to adjust the fitting degree of the two opposite side surfaces of the damping fin 30 with the surfaces of the seat frame 10 and the suspension arm 21, respectively, and the closer the fitting is, the greater the damping force is.

In another embodiment of the present application, as shown in fig. 4, the cantilever 21 includes a connecting arm 211 and an abutting block 212, the abutting block 212 is connected to the rotating shaft 22, a stepped surface 23 is formed between the rotating shaft 22 and the abutting block 212, and the damping fin 30 is in contact with the stepped surface 23.

In the embodiment of the present application, the arm 211 is a portion that is grasped and rotated by a hand of a user, and the abutting block 212 is connected to a side portion of the arm 211 close to the seat frame 10, specifically, the abutting block 212 may be integrally formed with the arm 211, or may be fixedly connected by bonding, welding, inserting, screwing, or the like. The side of the abutting block 212 departing from the arm 211 is connected to the rotating shaft 22, and similarly, the abutting block 212 may be integrally formed with the rotating shaft 22, or may be fixedly connected by bonding, welding, inserting, screwing, or the like. It should be understood that the abutting block 212 protrudes from the circumferential side surface of the rotating shaft 22 in the radial direction of the rotating shaft 22 at the connection with the rotating shaft 22 to form the stepped surface 23, and the opposite side surfaces of the damping fin 30 are in contact with the stepped surface 23 and the seat frame 10, respectively.

In another embodiment of the present application, as shown in fig. 3 and 4, the damper 30 is annular and is disposed on the shaft 22.

In the embodiment of the present application, the damping plate 30 is movably sleeved on the rotating shaft 22 and can move along the axial direction of the rotating shaft 22, so as to facilitate the installation and replacement of the damping plate 30. During assembly, the damper 30 is sleeved on the rotating shaft 22 to achieve radial fixation, one side face of the damper 30 is in contact with the cantilever 21, then the rotating shaft 22 is inserted into the connecting hole 11, the other side face of the damper 30 is in contact with the seat framework 10, then the fastener 40 is clamped on the side portion, away from the damper 30, of the seat framework 10, and is screwed on the rotating shaft 22, so that the damper 30 is clamped between the seat framework 10 and the cantilever 21 to achieve axial fixation. Of course, the damping plate 30 can also be fixedly sleeved on the rotating shaft 22 by bonding, welding, or the like.

Further, the damping plate 30 is a plastic washer, which has the advantages of good wear resistance, strong corrosion resistance, low cost, etc., and is applied to the seat armrest assembly, thereby having good use reliability and service life.

Further, pivot 22 is cylindricly, and butt piece 212 is also cylindricly, and the external diameter of butt piece 212 is greater than the external diameter of pivot 22, forms annular ladder face 23 between butt piece 212 and the pivot 22, and like this, ladder face 23 can fully contact with damping fin 30 for cantilever 21 acts on the positive pressure on damping fin 30 more evenly, and damping fin 30's wearing and tearing are also more even, are favorable to increase of service life.

Further, the external diameter of damping fin 30 is greater than the external diameter of butt joint piece 212 to the area of contact of increase damping fin 30 and seat skeleton 10 is favorable to the pressure that dispersion butt joint piece 212 acted on seat skeleton 10, reduces pressure, thereby plays certain guard action to seat skeleton 10.

In some embodiments, the damping fins 30 may not be sleeved on the rotating shaft 22, but are fixedly connected to the suspension arm 21 or the seat frame 10, on this basis, the number of the damping fins 30 may be one, two, three or more, when the number of the damping fins 30 is one, the damping fins 30 may be disposed at any position between the suspension arm 21 and the seat frame 10, when the number of the damping fins 30 is two, the two damping fins 30 are disposed at intervals, and when the number of the damping fins 30 is two or more, the damping fins 30 may be uniformly disposed around the circumference of the rotating shaft 22.

In another embodiment of the present application, as shown in fig. 2 and 4, a threaded hole 221 is formed in the rotating shaft 22, the fastening element 40 includes a locking block 41 and a threaded post 42 connected to each other, the locking block 41 is locked on a side of the seat frame 10 away from the damping plate 30, and the threaded post 42 is inserted into the threaded hole 221 and is in threaded connection with the threaded hole 221.

In the embodiment of the present application, it should be understood that the size of the locking block 41 in the radial direction of the connection hole 11 is larger than the aperture of the connection hole 11, so that the locking block 41 can be locked on the side of the seat frame 10 away from the damping plate 30 without entering into the connection hole 11, thereby ensuring that the locking block 41 and the cantilever 21 can clamp the seat frame 10 and the damping plate 30 from the opposite sides of the connection hole 11. When the damping force is adjusted, a user drives the threaded column 42 to move in the threaded hole 221 by rotating the clamping block 41, and under the action of the threads, the rotating shaft 22 can move axially along the connecting hole 11, so as to drive the cantilever 21 to move towards the direction close to the seat frame 10 to clamp the damping fin 30 or move towards the direction far away from the seat frame 10 to loosen the damping fin 30, so that the positive pressure of the cantilever 21 acting on the damping fin 30 is adjusted, and the adjustment of the magnitude of the damping force of the first armrest 20 rotating relative to the seat frame 10 is also achieved.

In another embodiment of the present application, as shown in fig. 2 and 4, the seat armrest assembly further comprises a gasket 50, wherein the gasket 50 is connected between the clamping block 41 and the seat frame 10 and sleeved on the threaded post 42.

In the embodiment of the present application, the gasket 50 plays a role of preventing the fastener 40 from loosening, so as to ensure stable adjustment of the damping force, and specifically, the gasket 50 may be a metal gasket 50, a metal composite gasket 50, or a non-metal gasket 50.

Further, the outer diameter of the gasket 50 is larger than the aperture of the connection hole 11, so that the gasket 50 can abut against the side portion of the seat frame 10 away from the damping sheet 30 and cannot enter the connection hole 11, in this case, the size of the clamping block 41 in the radial direction of the connection hole 11 can be smaller than the aperture of the connection hole 11, when the threaded column 42 passes through the gasket 50 and is in threaded connection with the threaded hole 221, the clamping block 41 can also abut against the side portion of the gasket 50 away from the connection hole 11 and cannot enter the connection hole 11, and thus the clamping block 41 can be clamped on the side portion of the seat frame 10 away from the damping sheet 30. Further, the fastening member 40 may be a screw, a head of the screw is the position-retaining block 41, and a shaft of the screw is the threaded post 42, or the fastening member 40 is a bolt, a head of the bolt is the position-retaining block 41, and a shaft of the bolt is the threaded post 42.

In another embodiment of the present application, as shown in fig. 2 and 4, the chair arm assembly further comprises a flat bearing 60, the flat bearing 60 is connected between the block 41 and the pad 50 and is sleeved on the threaded post 42.

In the embodiment of the present application, when being installed, the plane bearing 60 and the gasket 50 are sequentially sleeved on the threaded column 42, and then the threaded column 42 is screwed into the threaded hole 221, so that the clamping block 41 and the seat frame 10 clamp the plane bearing 60 and the gasket 50 from two sides respectively, and the plane bearing 60 and the gasket 50 are fixed. The flat bearing 60 has two washers spaced apart from each other, and rolling elements are coupled between the two washers such that the two washers can rotate relative to each other, one of the washers being coupled to the retainer block 41 and the other washer being coupled to the washer 50. When the user rotates the suspension arm 21, the suspension arm 21 drives the rotation shaft 22 to rotate, and further drives the threaded post 42 and the locking block 41 to rotate, the washer abutting against the locking block 41 rotates along with the locking block 41, the washer abutting against the gasket 50 is in a static state, and does not generate sliding friction with the gasket 50, and therefore, the gasket 50 is also in a static state, and does not generate sliding friction with the seat frame 10. The plane bearing 60 eliminates the sliding friction between the clamping block 41 and the gasket 50 and the sliding friction between the gasket 50 and the seat frame 10, avoids generating additional sliding friction resistance in addition to the damping force provided by the damping fin 30, and ensures that the positive pressure of the cantilever 21 acting on the damping fin 30 is only related to the damping force provided by the damping fin 30.

In another embodiment of the present application, an end of the rotating shaft 22 away from the cantilever 21 penetrates through the connecting hole 11 and is provided with an external thread, the fastening member 40 is provided with an internal thread, and the fastening member 40 is clamped on a side portion of the seat frame 10 away from the damping fin 30 and is screwed on the rotating shaft 22. Further, the fastener 40 may be a nut.

In another embodiment of the present application, as shown in fig. 2 and fig. 4, a connection sleeve 12 is disposed on a side portion of the seat frame 10 away from the damping fin 30, the connection hole 11 penetrates the connection sleeve 12, the fastening member 40 is clamped on the connection sleeve 12, a first through hole 121 that communicates with the connection hole 11 is disposed on a peripheral side portion of the connection sleeve 12, the first through hole 121 extends along a circumferential direction of the connection sleeve 12 and is disposed in a strip shape, the seat armrest assembly further includes a limiting member 70, one end of the limiting member 70 penetrates the first through hole 121 to be connected with the rotation shaft 22, and the limiting member 70 can move in the first through hole 121 along the circumferential direction of the connection sleeve 12.

In the embodiment of the present application, the stopper 70 prevents the rotating shaft 22 from being accidentally removed from the connecting sleeve 12. First through-going hole 121 extends along the circumference of adapter sleeve 12 and sets up to be the bar form, and like this, first through-going hole 121 just provides the pivoted space for locating part 70 to guarantee that pivot 22 normally rotates in connecting hole 11, in addition, can set for the biggest turned angle of first handrail 20 according to the length that first through-going hole 121 extends. It should be understood that, in the axial direction of the connection hole 11, a certain gap may be provided between the first through hole 121 and the limiting member 70, so as to ensure that when the damping force is adjusted, the limiting member 70 can move in the first through hole 121 along the axial direction of the connection hole 11, that is, the rotating shaft 22 can move in the connection hole 11 along the axial direction of the connection hole 11, so as to drive the cantilever 21 to move towards the direction close to the seat frame 10 to relatively clamp the damping fin 30 or move towards the direction away from the seat frame 10 to relatively loosen the damping fin 30, so that the positive pressure of the cantilever 21 acting on the damping fin 30 can be adjusted, and the adjustment of the damping force is achieved.

Further, a second through hole 222 is formed on the periphery of the rotating shaft 22, the first through hole 121 is communicated with the second through hole 222, and one end of the limiting member 70 passes through the first through hole 121 and is in threaded connection with the second through hole 222. Therefore, the limiting member 70 is firmly connected with the rotating shaft 22 and is easy to disassemble and assemble.

Referring to fig. 1 to 4 together, the seat includes the above-mentioned seat armrest assembly, and the seat armrest assembly further includes a second armrest 80, and the first armrest 20 and the second armrest 80 are respectively connected to two opposite sides of the seat frame 10. Wherein, for the first armrest 20, the damping patch 30 provides a frictional damping force for the first armrest 20 to rotate relative to the seat frame 10 when the user rotates the suspension arm 21. The user can adjust the positive pressure of the cantilever 21 on the damper 30 by adjusting the tightness of the fastening member 40 screwed to the shaft 22, and the positive pressure is proportional to the damping force, so as to adjust the magnitude of the damping force. The second armrest 80 may be rotatably connected to the seat frame 10, or may be fixedly connected to the seat frame 10, which may be selected according to actual requirements.

Further, the seat may further comprise one or more of a headrest, a back, pedals, a seat, and a cushion.

Different users often have the difference to the demand that the damping felt, the size that the armrest subassembly of the seat that this application embodiment provided can adjust the damping force in a flexible way satisfies different users' demand, has wider market. The magnitude of the damping force is adjusted by adjusting the tightness degree of the screw joint of the fastening piece 40 on the rotating shaft 22, and the operation is simple and easy. In addition, the seat armrest assembly provided by the embodiment of the present application cannot avoid abrasion of moving parts during normal use, so that the thickness of the damping plate 30 may become thinner, and the damping force may become smaller, and then the fastener 40 may be further tightened on the rotating shaft 22, and the gap between the cantilever 21 and the seat frame 10 may be readjusted to adapt to the change of the thickness of the damping plate 30, so that the seat armrest assembly provided by the embodiment of the present application has a longer service life.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A seat armrest assembly, comprising:

the side part of the seat framework is provided with a connecting hole;

the first armrest comprises a cantilever and a rotating shaft, the rotating shaft is connected with the cantilever, and the rotating shaft is movably inserted into the connecting hole so as to enable the rotating shaft to rotate relative to the seat framework;

the damping fin is arranged between the seat framework and the cantilever, and two opposite side surfaces of the damping fin are respectively contacted with the seat framework and the cantilever;

the fastener is clamped on the side part, deviating from the damping fin, of the seat framework and is in threaded connection with the rotating shaft.

2. The seat armrest assembly of claim 1, wherein: the damping sheet is annular and is sleeved on the rotating shaft.

3. The seat armrest assembly of claim 2, wherein: the damping fin is a plastic gasket.

4. The seat armrest assembly of claim 1, wherein: the cantilever is including the arm body and the butt piece that are connected, the butt piece with the pivot is connected, the pivot with form the ladder face between the butt piece, the damping fin with the contact of ladder face.

5. The seat armrest assembly of claim 1, wherein: threaded hole is seted up in the pivot, the fastener includes screens piece and the screw thread post that links to each other, the screens piece card is established the seat skeleton deviates from on the lateral part of damping fin, the screw thread post inserts in the screw hole, and with screw hole threaded connection.

6. The seat armrest assembly of claim 5, wherein: the seat is characterized by further comprising a gasket, wherein the gasket is connected between the clamping block and the seat framework and sleeved on the threaded column.

7. The seat armrest assembly of claim 6, wherein: the screw thread column is characterized by further comprising a plane bearing, wherein the plane bearing is connected between the clamping block and the gasket and sleeved on the screw thread column.

8. The seat armrest assembly of claim 1, wherein: the seat skeleton deviates from be provided with the adapter sleeve on the lateral part of damping fin, the connecting hole runs through the adapter sleeve, the fastener card is established on the adapter sleeve, the intercommunication has been seted up on the week lateral part of adapter sleeve the first hole of wearing to establish of connecting hole, first hole edge of wearing to establish the circumference of adapter sleeve is extended to set up and is the bar form, seat armrest subassembly still includes the locating part, the one end of locating part is passed first hole of wearing to establish with the pivot is connected, just the locating part can be followed the circumference of adapter sleeve is in first hole motion of wearing to establish.

9. The seat armrest assembly of claim 8, wherein: second through holes are formed in the peripheral sides of the rotating shaft, the first through holes are communicated with the second through holes, and one end of the limiting piece penetrates through the first through holes to be in threaded connection with the second through holes.

10. A seat comprising the armrest assembly of any of claims 1-9, the armrest assembly further comprising a second armrest coupled to the opposite side of the seat frame from the first armrest.

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