CN219056062U

CN219056062U - Turnover seat armrest

Info

Publication number: CN219056062U
Application number: CN202222792728.5U
Authority: CN
Inventors: 邹毅; 未宝雨; 于海生; 王秀杰; 朱建国
Original assignee: Launch Design Inc ltd
Current assignee: Launch Design Inc ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-05-23
Anticipated expiration: 2032-10-21

Abstract

The utility model provides a can turn over a seat handrail, has solved current handrail and can not compromise to turn over a function and high rigidity's function and stability poor and then lead to the relatively poor technical problem of practicality of handrail. The seat comprises a seat basin and armrests arranged on two sides of the seat basin, wherein the two armrests comprise C-shaped frameworks, the opening of each C-shaped framework faces to the backrest of the seat, each C-shaped framework comprises a supporting framework and a mounting framework which are fixedly connected with each other, the rear end of each mounting framework is rotatably mounted on the seat basin through a mounting piece, an operating handle is further arranged between each mounting framework and the seat basin, the middle part of each operating handle is hinged to the seat basin, the inner side of each operating handle is mounted on the seat basin through a first elastic locking assembly, the outer side of each operating handle is mounted on each mounting framework through a second elastic locking assembly, and the first elastic locking assemblies are arranged opposite to the second elastic locking assemblies; the unlocking and locking operations of the handrail are simple and convenient, and the practicability of the handrail is good. The utility model is mainly used in the technical field of seat armrest products.

Description

Turnover seat armrest

Technical Field

The utility model relates to the technical field of seat armrest production, in particular to a turnover seat armrest.

Background

Most of the handrails of the existing scooter seats in the market are fixed on the side surfaces of the seat basin and the backrest, people need to wind to the right front of the seat basin due to the fixed arrangement of the handrails, then enter the seat basin from the right front of the seat basin to sit, and the space right front of the seat basin is limited due to limited space in the scooter, so that the handrails are limited when the handrails enter the seat basin from the right front of the scooter under special conditions, and the practicability of the handrails is further reduced.

In order to solve the problems, the armrest is designed to be rotatable, when a special condition is met and the user is inconvenient to enter the sitting basin from the front surface of the sitting basin, the armrest can be rotated, and then the armrest enters the sitting basin from the side surface of the sitting basin, so that the practicability of the armrest is greatly improved.

When the road conditions that the scooter was used are comparatively complicated, for example when needs to turn repeatedly many times, because of the effect of inertia, the people just need borrow power with keeping stably sitting on the seat through holding the handle, also take place the damage easily as the articulated department of atress gathering point this moment, has further reduced the practicality of handrail.

The handrail with the upward rotation function of the handrail is not provided with the locking structure in a hinged connection mode, namely the handrail is always in a state of being capable of being rotated upward at will, when a road condition is relatively bumpy, a person can be overturned upward along with a vehicle due to the action of inertia when the person holds the handrail to carry out force borrowing, at the moment, the handrail which is not locked can also be rotated upward along with the vehicle, force borrowing failure is caused, and the stability of the handrail is poor.

Therefore, designing a handrail with high rigidity, capable of realizing a turnover function and stable and good at the same time is one of key factors for improving the practicability of the handrail.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and provides a turnover seat armrest, which solves the technical problems that the existing armrest cannot achieve both the turnover function and the high-rigidity function and has poor stability, so that the armrest has poor practicability.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a can turn over a chair armrest, is in including sitting basin and setting the handrail of sitting basin both sides, two the handrail all includes C style of calligraphy skeleton, the opening of C style of calligraphy skeleton is towards the back of seat, C style of calligraphy skeleton is including supporting framework and the installation skeleton of each other rigid coupling, the rear end of installation skeleton is installed through the installed part rotation on sitting basin, the installation skeleton with still be provided with operating handle between the sitting basin, operating handle's middle part articulates on the sitting basin, operating handle's inboard is in through first elastic locking subassembly movable mounting on the sitting basin, operating handle's outside is in through second elastic locking subassembly movable mounting on the installation skeleton, first elastic locking subassembly with second elastic locking subassembly sets up relatively, rotates towards keeping away from the direction of sitting basin operating handle so that the installation skeleton breaks away from operating handle and then operates C style of calligraphy skeleton rotates round the installed part.

Further, the mounting piece comprises an armrest mounting rotating shaft, a mounting hole is formed in one end, close to the seat backrest, of the mounting framework, a fixing hole corresponding to the mounting hole is formed in the seat basin, the armrest mounting rotating shaft sequentially penetrates through the mounting hole and the fixing hole and then is fixed in the fixing hole through a limiting clamp, the mounting framework is rotatably mounted on the seat basin, and the armrest mounting rotating shaft is assembled on the seat basin along a direction perpendicular to the mounting framework and parallel to the seat basin.

Further, the operating handle comprises a mounting part and an operating part which are fixedly connected with each other, the outer side of the mounting part is assembled on the mounting framework through the second elastic locking component, the inner side of the mounting part is assembled on the mounting framework through the first elastic locking component, and the free end of the operating part is exposed.

Further, the first elastic locking component comprises a reset spring and an installation seat which are always in a compressed state, the installation seat is fixed on the sitting basin, a positioning hole for accommodating the reset spring is formed in the installation seat, the reset spring is arranged in the positioning hole in a penetrating mode, one end of the reset spring is fixed at one end of the positioning hole, the other end of the reset spring is abutted to the installation portion, the operation portion is arranged along the direction perpendicular to the armrest installation rotating shaft, and the reset spring is arranged along the direction parallel to the armrest installation rotating shaft.

Further, the second elastic locking component comprises a first limiting block arranged on the outer side of the installation portion, a first limiting groove clamped with the first limiting block is further formed in the inner side of the installation framework, the first limiting block is clamped in the first limiting groove, the operation handle is fixed on the installation framework and rotates towards the direction away from the sitting basin, the operation handle rotates around the hinging position of the middle portion of the operation handle to enable the first limiting block to be separated from the first limiting groove, and unlocking of the second elastic locking component is achieved.

Further, a second limiting block is further arranged on the inner side of the mounting portion, a second limiting groove is further formed in the sitting basin, and the second limiting block is clamped in the second limiting groove so as to limit the operating handle in the sitting basin.

Further, a third limiting block is further arranged on the inner side of the installation framework, a fourth limiting block is arranged on the outer side of the fixing hole, and the third limiting block is abutted to the fourth limiting block to limit the rotation angle of the installation framework.

Furthermore, the inner side of the mounting part is also provided with a clamping protrusion, and the clamping protrusion is clamped in the reset spring.

Further, the lower extreme of installation skeleton still is provided with the fifth stopper, it still is provided with the elastic component to sit the basin outside, the outside of elastic component is located sit the basin outside, when the second elasticity locking subassembly is in the locked state, the fifth stopper butt is in on the elastic component, just the elastic component is in compressed state.

Further, the elastic piece comprises a fixed block with a fixed groove and fixed on the outer side of the sitting basin, and an elastic block fixed in the fixed groove through glue, and the elastic block is abutted to the fifth limiting block.

Further, the elastic block is a rubber block made of rubber materials.

Further, the mounting piece further comprises lubrication lantern rings arranged on two sides of the fixing hole.

Further, the supporting framework is of an arc-shaped structure, the installation framework is of a linear structure, and the supporting framework and the installation framework are integrally formed.

Further, the mounting seat is fixed in the second limiting groove.

The beneficial effects of the utility model are as follows:

according to the turnover seat armrest designed by the utility model, the C-shaped framework in the armrest is arranged on the seat basin through the mounting piece, the operating handle is further arranged between the C-shaped framework and the seat basin, the outer side of the operating handle is movably arranged on the mounting framework through the second elastic locking component, the inner side of the operating handle is movably arranged on the seat basin through the first elastic locking component, the second elastic locking component has independently realized the effect of locking the operating handle on the mounting framework, and meanwhile, the first elastic locking component and the second elastic locking component which are oppositely arranged on two sides of the operating handle cooperate to further strengthen the locking function of the second elastic locking component, the operating handle is controlled to unlock the armrest, the armrest after unlocking can be turned over, and when the armrest is put down, the armrest is locked again by the operating handle so that the armrest can be used in a safe and stable state all the time.

And simultaneously the opening of the C-shaped framework of the handrail faces the backrest of the seat, and an arc-shaped transition arrangement is arranged between the supporting framework and the mounting framework, so that the force at the front end of the handrail which is easy to damage after being stressed can be directly decomposed onto the mounting framework, the rigidity of the handrail is good, the damage of the supporting framework is avoided, the service life of the handrail is longer, and the practicability of the whole handrail is better.

Drawings

Fig. 1 is a side view of the armrest of the present embodiment in a locked state after assembly;

fig. 2 is an exploded view of the handrail of the present embodiment;

FIG. 3 is a schematic view of the structure of FIG. 1 in partial cross-section at section A-A;

FIG. 4 is a schematic view of the structure in partial section at section B-B in FIG. 1;

fig. 5 is a schematic structural view of the armrest of the embodiment in an unlocked state after rotation;

reference numerals illustrate:

1. basin sitting; 11. a fixed block; 12. an elastic block; 13. a fixing hole; 13-1, a fourth limiting block; 14. the second limit groove;

2. c-shaped frameworks; 21. a support skeleton; 22. installing a framework; 23. a fifth limiting block; 24. a mounting hole; 25. a first limit groove; 26. a third limiting block;

3. a mounting member; 31. the armrests are provided with rotating shafts; 32. a limit clamp; 33. a lubrication collar;

4. an operation handle; 41. a mounting part; 41-1, a first limiting block; 41-2, a second limiting block; 41-3, clamping the bulge; 42. an operation unit; 42-1, bolts; 43. a return spring; 44. a mounting base; 44-1, positioning holes.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying figures 1-5 and examples.

As shown in fig. 1, a turnover seat armrest comprises a seat basin 1 and armrests arranged on two sides of the seat basin 1, the two armrests are completely consistent in structure, each armrest comprises a C-shaped framework 2, an opening of the C-shaped framework 2 faces to a backrest of a seat, the C-shaped framework 2 comprises a supporting framework 21 and an installation framework 22 which are fixedly connected with each other, the rear end of the installation framework 22 is rotatably arranged on the seat basin 1 through an installation piece 3, an operation handle 4 is further arranged between the installation framework 22 and the seat basin 1, the middle part of the operation handle 4 is hinged on the seat basin 1, the inner side of the operation handle 4 is movably arranged on the seat basin 1 through a first elastic locking assembly, the outer side of the operation handle 4 is movably arranged on the installation framework 22 through a second elastic locking assembly, and the first elastic locking assembly and the second elastic locking assembly are oppositely arranged, and rotate the operation handle 4 in a direction away from the seat basin 1 so that the installation framework 22 is separated from the operation handle 4 and then rotates around the installation piece 3.

As shown in fig. 2, specifically, the mounting member 3 includes an armrest mounting shaft 31 disposed along a direction perpendicular to the armrest and parallel to the direction of the bowl 1, the mounting frame 22 is provided with a mounting hole 24 at one end close to the seat back, the bowl 1 is also provided with a fixing hole 13 corresponding to the mounting hole 24, the armrest mounting shaft 31 sequentially passes through the mounting hole 24 and the fixing hole 13, one end of the armrest mounting shaft 31 located outside is limited outside the mounting hole 24 by its own fixing piece, and the other end of the armrest mounting shaft 31 is fixed inside the fixing hole 13 by a limiting clip 32.

The outer side and the inner side of the fixing hole 13 are respectively provided with a lubricating collar 33, and the lubricating collars 33 can be made of wear-resistant plastic materials, such as polyurethane; or a wear-resistant metal material, such as copper material; the provision of the lubrication collar 33 can reduce abnormal noise of the mounting frame 22 when rotating around the central axis of the armrest mounting shaft 31, and at the same time reduce wear between the mounting frame 22 and the fixing hole 13 and the armrest mounting shaft 31, respectively.

The outer side of the fixed hole 13 is provided with a raised fourth limiting block 13-1, and the inner side of the mounting hole 24 is provided with a raised third limiting block 26; after the second elastic locking component is unlocked, the installation framework 22 can rotate around the central axis of the armrest installation rotating shaft 31 until the third limiting block 26 is abutted on the fourth limiting block 13-1, at this time, under the abutting action of the fourth limiting block 13-1, the installation framework 22 cannot continue to rotate, the installation framework 22 and the sitting basin 1 are in an obtuse angle state (namely, the backward rotation angle of the installation framework 22 exceeds 90 degrees) so as to prevent the installation framework 22 from having a tendency of reverse rotation under the action of self gravity, and at this time, the space, released by the rotation angle of the installation framework 22, at the side edge of the sitting basin 1 is enough, and the space requirement of people entering the seat from the side edge is completely met.

As shown in fig. 3 to 4, the operating handle 4 includes a mounting portion 41 and an operating portion 42 fixedly connected to each other, the mounting portion 41 being provided between the mounting frame 22 and the C-shaped frame 2 and being hidden inside, the operating portion 42 being exposed to facilitate the operation thereof by a person.

The mounting portion 41 and the operation portion 42 are integrally formed, and the integrally formed operation handle 4 is excellent in strength, and the operation handle 4 as a fragile member is prolonged in service life.

The installation framework 22 and the supporting framework 21 are integrally formed, and the integrally formed C-shaped framework 2 is good in strength; wherein the installation framework 22 is of a linear plate-shaped structure, and the supporting framework 21 is of an arc-shaped plate-shaped structure.

The mounting portion 41 is provided with a hinge hole at one end thereof adjacent to the operating portion 42, and the bolt 42-1 passes through the hinge hole to rotatably mount the mounting portion 41 in the second limiting groove 14 provided at the outer side surface of the bowl 1.

The second elastic component comprises a first limiting block 41-1 arranged on the outer side of the mounting part 41 and protruding outwards and a first limiting groove 25 formed in the mounting framework 22, the first limiting block 41-1 is arranged at one end, far away from the operating part 42, of the mounting part 41, and the first limiting block 41-1 is clamped in the first limiting groove 25 to fix the mounting framework 22 on the mounting part 41, namely, fix the armrests on the sitting basin 1.

The second elastic assembly further comprises a fifth limiting block 23 arranged at the lower end of the mounting part 41 and an elastic piece arranged outside the sitting basin 1 and abutted against the fifth limiting block 23.

The elastic piece comprises a fixed block 11 with a fixed groove, wherein the fixed block 11 is fixed on the outer side of the sitting basin 1, the elastic block 12 is fixed in the fixed groove of the fixed block 11, the outer side of the elastic block 12 is positioned outside the outer side surface of the sitting basin 1 so as to ensure that the elastic block 12 can be fully compressed when the installation framework 22 is fixed on the sitting basin 1, and the elastic block 12 in a compressed state is abutted against the fifth limiting block 23.

As shown in fig. 4-5, when the armrest needs to be unlocked, the operating portion 42 is rotated in a direction away from the bowl 1, the entire operating handle 4 rotates around the central axis of the bolt 42-1 which is assembled in the second limiting groove 14 and is used for rotatably mounting the mounting portion 41 therein, the first limiting block 41-1 gradually breaks away from the first limiting groove 25, and because the elastic block 12 is in a compressed state at this time, when the first limiting block 41-1 gradually breaks away from the first limiting groove 25, the elastic block 12 abutting against the fifth limiting block 23 gradually deforms and releases the elastic force to further drive the first limiting block 41-1 to break away from the first limiting groove 25, and because the elastic block 12 is arranged outside the outer side surface of the bowl 1, the first limiting block 41-1 can be ensured to completely break away from the first limiting groove 25 under the cooperative action of the elastic block 12, namely, the armrest is in a completely unlocked state.

And during the unlocking process of the armrest, when the operating part 42 is rotated in a direction away from the bowl 1, the return spring 43 is further compressed, and when the operating handle 4 is released after the armrest is rotated, the return spring 43 releases the elastic force to drive the operating part 42 to rotate in a direction close to the bowl 1, but due to the arrangement of the second limiting block 41-2, the operating part 42 cannot rotate continuously, namely, the operating handle 4 is reset.

The elastic block 12 can be made of plastic materials such as rubber, polyurethane and the like with good elasticity and certain strength.

The first elastic locking assembly comprises a return spring 43 and a mounting seat 44 which are always in a compressed state, the mounting seat 44 is fixed in the second limiting groove 14, the second limiting groove 14 is arranged on one side of the fixing hole 13 and is positioned on one side far away from the seat backrest, so that the space from the side to the side of the sitting basin 1 formed after the armrest is folded is maximized as much as possible.

The mounting seat 44 is provided with a positioning hole 44-1, the reset spring 43 is penetrated in the positioning hole 44-1 along the central axis of the armrest mounting rotating shaft 31, one end of the reset spring 43 is fixed in the second limiting groove 14, and the other end of the reset spring 43 is abutted on the mounting part 41.

Since the return spring 43 is always in a compressed state, when the armrest is in a locked state, the return spring 43 is always abutted against the mounting portion 41, and the return spring 43 has a tendency to drive the mounting portion 41 to rotate around the central axis of the bolt 42-1 thereon and toward approaching the mounting skeleton 22, that is, to give the first stopper 41-1 a force to remain engaged in the first stopper groove 25, further ensuring that the mounting portion 41 is completely locked on the mounting skeleton 22, the locking effect of the mounting skeleton 22 is stable, that is, the locking performance of the armrest is stable.

The inner side of the mounting part 41 is also provided with a clamping protrusion 41-3, the clamping protrusion 41-3 is in a columnar structure, when the handrail is in a locking state, the clamping protrusion 41-3 is just clamped in the reset spring 43, the clamping protrusion 41-3 can ensure that the axial direction of the reset spring 43 is basically vertical to the mounting part 41 so as to fully convert the elasticity of the reset spring 43 into positive pressure for the mounting part 41, and the handrail is again ensured to be in a completely stable locking state.

The mounting portion 41 is further provided with a second stopper 41-2 on the inner side of one end thereof close to the operating portion 42, and since the mounting portion 41 is hidden, the second stopper 41-2 is provided to prompt the person driving the operating handle 4 that the operating handle 4 has completely entered the position where the armrest is locked.

When the armrest needs to be locked, the supporting framework 21 is controlled to reversely rotate by a certain angle, in the process of rotating the supporting framework 21, the mounting framework 22 is abutted against the mounting part 41 and drives the mounting part 41 to rotate towards the direction close to the sitting basin 1, in the process of continuously rotating the mounting framework 22 along with the supporting framework 21, the first limiting groove 25 on the mounting framework 22 gradually approaches to the first limiting block 41-1 on the mounting part 41, the reset spring 43 is continuously compressed further, when the first limiting block 41-1 just aligns to the first limiting groove 25, the action of the abutting action of the mounting framework 22 on the mounting part 41 is lost at the moment, the reset spring 43 releases the elastic force to drive the mounting part 41 to rotate towards the direction close to the mounting framework 22, so that the first limiting block 41-1 on the mounting part 41 is clamped in the first limiting groove 25, sound is generated at the moment of clamping to prompt the armrest to be locked, and meanwhile, the elastic block 12 is also in a compressed state.

Working principle: when in use, the operation part 42 is rotated in a direction away from the sitting basin 1 until the installation framework 22 can be rotated, the operation handle 4 is loosened, and then the front end of the installation framework 22 is lifted to rotate upwards until the rotation cannot be continued; the space on the side of the sitting basin 1 limited by the arrangement of the armrests is completely released, and people can enter the sitting basin 1 from the side of the seat to sit and fix; then the handrail is reversely rotated, and when the handrail is gradually restored to the use state, the sound generated at the instant of the clamping is heard, namely the handrail is indicated to enter the locking state.

The unlocking of the handrail is controlled by controlling the operating handle 4, and the locking of the handrail is controlled by controlling the handrail, so that the operation is simple and convenient; meanwhile, the opening of the C-shaped framework in the armrest faces the seat backrest, the stress of the whole C-shaped framework 2 is better, and further, the first elastic locking component and the second elastic locking component which are oppositely arranged can enhance the locking function of the second elastic locking component which is used for independently locking the armrest on the sitting basin 1; the handrail can be folded and can be stably kept in a locking state for a long time when in use, and the handrail has good practicability.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. The utility model provides a can turn over a chair armrest, is in including sitting basin (1) and setting the handrail of sitting basin (1) both sides, its characterized in that, two the handrail all includes C style of calligraphy skeleton (2), the opening of C style of calligraphy skeleton (2) is towards the back of seat, C style of calligraphy skeleton (2) are including supporting skeleton (21) and installation skeleton (22) of each other rigid coupling, the rear end of installation skeleton (22) is installed through mounting (3) rotation on sitting basin (1), installation skeleton (22) with still be provided with operating handle (4) between sitting basin (1), the middle part rotation of operating handle (4) is installed on sitting basin (1), the inboard of operating handle (4) is in through first elastic locking subassembly movable mounting on sitting basin (1), the outside of operating handle (4) is in through second elastic locking subassembly movable mounting on installation skeleton (22), first elastic locking subassembly with second elastic locking subassembly is installed relatively, is kept away from basin (1) towards the direction of keeping away from operating handle (4) rotation makes sitting basin (4) rotate in order to make operating handle (4) rotate around sitting basin (2).

2. The foldable seat armrest according to claim 1, wherein the mounting member (3) comprises an armrest mounting rotating shaft (31), a mounting hole (24) is formed in one end, close to a seat backrest, of the mounting framework (22), a fixing hole (13) corresponding to the mounting hole (24) is formed in the seat pan (1), the armrest mounting rotating shaft (31) sequentially penetrates through the mounting hole (24) and the fixing hole (13) and then is fixed in the fixing hole (13) through a limiting clamp (32), so that the mounting framework (22) is rotatably mounted on the seat pan (1), and the armrest mounting rotating shaft (31) is assembled on the seat pan (1) along a direction perpendicular to the mounting framework (22) and simultaneously parallel to the seat pan (1).

3. A foldable seat armrest according to claim 2, characterized in that the operating handle (4) comprises a mounting portion (41) and an operating portion (42) fixedly connected to each other, the outer side of the mounting portion (41) is assembled on the mounting frame (22) through the second elastic locking assembly, the inner side of the mounting portion (41) is assembled on the mounting frame (22) through the first elastic locking assembly, and the free end of the operating portion (42) is exposed.

4. A foldable seat armrest as claimed in claim 3, wherein the first resilient locking assembly comprises a return spring (43) and a mounting seat (44) which are always in a compressed state, the mounting seat (44) is fixed on the seat pan (1), a positioning hole (44-1) for accommodating the return spring (43) is formed in the mounting seat (44), the return spring (43) is arranged in the positioning hole (44-1) in a penetrating manner, one end of the return spring (43) is fixed in the positioning hole (44-1), the other end of the return spring (43) abuts against the mounting portion (41), the operating portion (42) is arranged along a direction perpendicular to the armrest mounting rotating shaft (31), and the return spring (43) is arranged along a direction parallel to the armrest mounting rotating shaft (31).

5. The foldable seat armrest according to claim 4, wherein the second elastic locking component comprises a first limiting block (41-1) arranged on the outer side of the mounting portion (41), a first limiting groove (25) clamped with the first limiting block (41-1) is further formed in the inner side of the mounting skeleton (22), the first limiting block (41-1) is clamped in the first limiting groove (25) so as to fix the operating handle (4) on the mounting skeleton (22), the operating portion (42) is rotated towards a direction away from the seat pan (1), and the operating handle (4) rotates around a hinge position in the middle of the operating handle so that the first limiting block (41-1) is separated from the first limiting groove (25) to unlock the second elastic locking component.

6. The foldable seat armrest according to claim 5, wherein a second limiting block (41-2) is further disposed on the inner side of the mounting portion (41), a second limiting groove (14) is further disposed on the sitting basin (1), and the second limiting block (41-2) is clamped in the second limiting groove (14) so as to limit the operating handle (4) in the sitting basin (1).

7. The foldable seat armrest according to claim 6, wherein a third stopper (26) is further disposed on the inner side of the installation frame (22), a fourth stopper (13-1) is disposed on the outer side of the fixing hole (13), and the third stopper (26) abuts against the fourth stopper (13-1) to limit the rotation angle of the installation frame (22).

8. A foldable chair armrest according to any one of claims 4-7, characterized in that the inside of the mounting portion (41) is further provided with a snap-in protrusion (41-3), the snap-in protrusion (41-3) being snap-fitted into the return spring (43).

9. The foldable seat armrest according to claim 8, wherein a fifth limiting block (23) is further provided at a lower end of the mounting framework (22), an elastic member is further provided at an outer side of the seat pan (1), the outer side of the elastic member is located outside an outer side surface of the seat pan, and when the second elastic locking assembly is in a locked state, the fifth limiting block (23) abuts against the elastic member, and the elastic member is in a compressed state.

10. A foldable seat armrest according to claim 9, characterized in that the elastic member comprises a fixing block (11) with a fixing groove fixed on the outer side of the sitting basin (1) and an elastic block (12) fixed in the fixing groove by glue, wherein the elastic block (12) is abutted against the fifth limiting block (23).

11. A foldable seat armrest according to claim 10, characterized in that the elastic block (12) is a rubber block made of rubber material.

12. A foldable seat armrest according to claim 11, characterized in that the mounting (3) further comprises a lubrication collar (33) arranged on both sides of the fixation hole (13).

13. The foldable seat armrest as claimed in claim 12, wherein the supporting frame (21) has an arc-shaped structure, the mounting frame (22) has a linear structure, and the supporting frame (21) and the mounting frame (22) are integrally formed.

14. A foldable seat armrest as claimed in claim 7, wherein said mounting seat (44) is secured within said second limit slot (14).