Lifting armrest, seat and vehicle

Abstract

The present invention discloses a lifting armrest, a seat, and a vehicle. The lifting armrest includes an armrest body and a lifting mechanism for driving the armrest body to perform lifting motion. The lifting mechanism includes: a mounting plate; an elastic telescopic assembly, the telescopic end of which is connected to the armrest body; a positioning block fixedly mounted on the mounting plate, the positioning block being provided with a lifting guide groove, the bottom of the lifting guide groove being provided with at least two height positioning grooves along its height direction; a positioning bracket slidably connected to the lifting guide groove, the positioning bracket being connected to the armrest body, the positioning bracket having a positioning hole on a side close to the lifting guide groove; a spherical member for cooperating with the height positioning groove and the positioning hole to achieve positioning between the positioning block and the positioning bracket; a stopper, the side of the stopper close to the positioning bracket being provided with a recessed portion; a lifting pull assembly disposed on the armrest body for pulling the stopper to perform lifting motion; and an elastic reset member connecting the stopper and the positioning bracket.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting armrests, and in particular to a lifting armrest, a seat and a vehicle. Background Art

[0002] At present, the handrails on EMU trains are usually of fixed height, which cannot meet the needs of people of different heights and reduces the riding comfort.

[0003] Therefore, how to design an armrest suitable for people of different heights to improve riding comfort is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a lifting armrest suitable for people of different heights to improve passenger comfort.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A lifting armrest, comprising an armrest body and a lifting mechanism for driving the armrest body to move up and down;

[0007] Wherein, the lifting mechanism includes:

[0008] Mounting plate;

[0009] An elastic telescopic component is provided on the mounting plate, and a telescopic end of the elastic telescopic component is connected to the armrest body;

[0010] A positioning block is fixedly mounted on the mounting plate, wherein the positioning block is provided with a lifting guide groove, and the bottom of the lifting guide groove is provided with at least two height positioning grooves along its height direction;

[0011] A positioning bracket is slidably connected to the lifting guide slot, and the positioning bracket is connected to the armrest body, and a positioning hole is provided on a side of the positioning bracket close to the lifting guide slot;

[0012] a spherical member, used to cooperate with the height positioning groove and the positioning hole to achieve positioning between the positioning block and the positioning bracket;

[0013] a stopper slidably disposed on the positioning bracket, and a recessed portion is provided on a side of the stopper close to the positioning bracket, wherein when the spherical member is in a mating state with the height positioning groove and the positioning hole, the recessed portion is located below the positioning hole;

[0014] A lifting and pulling assembly, provided on the armrest body, for pulling the stopper to perform lifting motion; and

[0015] An elastic reset member connects the stopper and the positioning bracket.

[0016] Optionally, in the above-mentioned lifting armrest, the lifting pulling assembly includes a buckle provided on the armrest body, a fork abutting against the buckle and a pull wire connected to the fork, the fork is rotatably provided on the armrest body, and the end of the pull wire away from the fork is connected to the stop block.

[0017] Optionally, in the above-mentioned lifting armrest, the elastic telescopic component includes a gas spring and a guide structure for guiding the lifting and lowering of the gas spring.

[0018] Optionally, in the above-mentioned lifting armrest, the gas spring includes a first gas spring, a second gas spring and a gas spring connecting bracket, the gas spring connecting bracket is slidably matched with the guide structure, one end of the gas spring connecting bracket is connected to the telescopic end of the first gas spring, and the other end is connected to the non-telescopic end of the second gas spring, and the telescopic end of the second gas spring is connected to the armrest body.

[0019] Optionally, in the above-mentioned lifting armrest, the armrest body includes an armrest support and an armrest cover, the armrest cover and the armrest support are enclosed to form an installation space, and the lifting and pulling assembly is installed in the installation space.

[0020] Optionally, the lifting armrest further includes a connecting bracket provided on the mounting plate, for mounting the lifting armrest on the seat via the connecting bracket.

[0021] Optionally, the lifting armrest further includes an armrest cover, which is connected to the armrest body, and a sliding guide rail is provided on the mounting plate, and the armrest cover is slidably connected to the sliding guide rail through a slider.

[0022] Optionally, the lifting armrest further includes an armrest guard plate arranged on a side of the armrest body away from the armrest cover.

[0023] A chair comprises the lifting armrest as described above.

[0024] A vehicle comprises the lifting armrest as described above.

[0025] When using the lifting armrest provided by the present invention, the lifting process of the armrest body can be driven by the lifting mechanism. Specifically, when the armrest body is stationary at a lower position, the spherical piece cooperates with the positioning hole on the positioning bracket and the height positioning groove at the lower position to achieve relative fixation between the positioning bracket and the positioning block. Since the armrest body is connected to the positioning bracket, the armrest body is stably stationary in this position based on the cooperation of the spherical piece, the positioning hole and the height positioning groove; when the armrest body needs to be raised, the stopper is pulled up by the lifting and pulling assembly. As the stopper is raised, the stopper and the positioning bracket are relatively displaced in the height direction, so that the recessed portion below the positioning hole is gradually aligned with the positioning hole. When the armrest is lifted up to the preset height, the block also rises to the preset height. After the positioning bracket slidably connected to the block rises, the elastic reset member between the block and the positioning bracket is stretched. Under the tensile force of the elastic reset member, the positioning bracket continues to rise to restore the relative position relationship between the positioning bracket and the block. During the gradual rise and reset process of the positioning bracket, the positioning bracket is lifted up to the preset height. The positioning hole on the bracket and the recessed portion on the stopper are gradually misaligned, and the accommodation space formed between the recessed portion and the positioning hole is gradually reduced until the side wall of the stopper pushes the spherical part, causing the spherical part to roll to a relatively higher height positioning groove, so that the armrest body is stable and stationary in a relatively high position, thereby realizing the upward adjustment of the armrest body; when the armrest body needs to be lowered, the stopper is pulled up by the lifting and pulling assembly. As the stopper is raised, the stopper and the positioning bracket are relatively displaced in the height direction, so that the recessed portion below the positioning hole is gradually aligned with the positioning hole, and a larger accommodation space is formed between the recessed portion and the positioning hole. The spherical part moves from the height positioning groove of the positioning block to the accommodation space, and the spherical part is moved The spherical part is disengaged from the height positioning groove. At this time, downward pressure is applied to the armrest body, so that the armrest body overcomes the telescopic force of the elastic telescopic component and moves downward. After the armrest body reaches the preset height, the lifting and pulling component is released, and the elastic reset part between the stopper and the positioning bracket pulls the stopper down to restore the relative position relationship between the stopper and the positioning bracket, so that the positioning hole on the positioning bracket and the recessed part on the stopper are gradually misaligned, and the accommodating space formed between the recessed part and the positioning hole is gradually reduced until the side wall of the stopper pushes the spherical part, causing the spherical part to roll to a relatively lower height positioning groove, so that the armrest body is stably stationary in a relatively low position, thereby realizing the downward adjustment of the armrest body.

[0026] It can be seen that the lifting armrest provided by the present invention can be adjusted up and down to meet the usage needs of people of different heights and improve riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the external structure of a lifting handrail provided in an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the exploded structure of a lifting handrail provided in an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the internal structure of a lifting armrest provided by an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the axial structure of a positioning block provided by an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the relative positional relationship between the recessed portion and the positioning hole after a lifting handrail provided by an embodiment of the present invention is fixed at a certain height;

[0033] Figure 6 A schematic diagram of the assembly structure of a lifting and pulling assembly on an armrest support provided by an embodiment of the present invention;

[0034] Figure 7 A schematic structural diagram of a lifting mechanism provided by an embodiment of the present invention when lowering an armrest body to a low position;

[0035] Figure 8 This is a structural diagram of a lifting mechanism provided by an embodiment of the present invention when the armrest body is raised to a mid-range position;

[0036] Figure 9 This is a structural schematic diagram of a lifting mechanism provided by an embodiment of the present invention when raising an armrest body to a high position.

[0037] Among them, 100 is the armrest body, 101 is the armrest support, 102 is the armrest cover, 200 is the lifting mechanism, 201 is the mounting plate, 202 is the elastic telescopic component, 2021 is the gas spring, 2021-a is the first gas spring, 2021-b is the second gas spring, 2022 is the gas spring connecting bracket, 2023 is the guide bracket, 203 is the positioning block, 2031 is the lifting guide groove, 2032 is the height positioning groove, 204 is the positioning bracket, 2041 is the positioning hole, 205 is the spherical part, 206 is the stop block, 2061 is the recessed part, 207 is the lifting pulling assembly, 2071 is the buckle, 2072 is the fork, 2073 is the pull wire, 208 is the elastic reset part, 209 is the sliding guide rail, 300 is the seat connecting bracket, 400 is the armrest cover, and 500 is the armrest guard plate. DETAILED DESCRIPTION

[0038] In view of this, the core of the present invention is to provide a lifting armrest that is suitable for people of different heights and improves passenger comfort.

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] like Figures 1 to 9 As shown, an embodiment of the present invention discloses a lifting armrest, including an armrest body 100 and a lifting mechanism 200 for driving the armrest body 100 to perform lifting movements; wherein, the lifting mechanism 200 includes a mounting plate 201, an elastic telescopic component 202, a positioning block 203, a positioning bracket 204, a spherical part 205, a stop block 206, a lifting pulling component 207 and an elastic reset part 208.

[0041] Among them, the elastic telescopic component 202 is arranged on the mounting plate 201, and the telescopic end of the elastic telescopic component 202 is connected to the armrest body 100; the positioning block 203 is fixedly installed on the mounting plate 201, and the positioning block 203 is provided with a lifting guide groove 2031, and the bottom of the lifting guide groove 2031 is provided with at least two height positioning grooves 2032 along its height direction; the positioning bracket 204 is slidably connected to the lifting guide groove 2031, and the positioning bracket 204 is connected to the armrest body 100, and the positioning bracket 204 is provided with a positioning hole 2041 on the side close to the lifting guide groove 2031; the spherical member 205 is used to contact the height guide groove 2031. The height positioning groove 2032 and the positioning hole 2041 cooperate to realize the positioning between the positioning block 203 and the positioning bracket 204; the stop block 206 is slidably set on the positioning bracket 204, and the side of the stop block 206 close to the positioning bracket 204 is provided with a recessed portion 2061. When the spherical member 205 is in a cooperated state with the height positioning groove 2032 and the positioning hole 2041, the recessed portion 2061 is located below the positioning hole 2041; the lifting and pulling assembly 207 is arranged on the armrest body 100, and is used to pull the stop block 206 to perform a lifting movement; the elastic reset member 208 connects the stop block 206 and the positioning bracket 204.

[0042] When using the lifting armrest provided by the present invention, the lifting process of the armrest body 100 can be driven by the lifting mechanism 200. Specifically, when the armrest body 100 is stationary at a lower position, the spherical member 205 cooperates with the positioning hole 2041 on the positioning bracket 204 and the height positioning groove 2032 at the lower position to achieve relative fixation between the positioning bracket 204 and the positioning block 203. Since the armrest body 100 is connected to the positioning bracket 204, based on the cooperation of the spherical member 205 with the positioning hole 2041 and the height positioning groove 2032, the armrest body 100 is When the armrest body 100 needs to be raised, the stopper 206 is pulled up by the lifting and pulling assembly 207. As the stopper 206 is raised, the stopper 206 and the positioning bracket 204 are relatively displaced in the height direction, so that the recessed portion 2061 below the positioning hole 2041 is gradually aligned with the positioning hole 2041, and a larger accommodation space is formed between the recessed portion 2061 and the positioning hole 2041. The spherical member 205 moves from the height positioning groove 2032 of the positioning block 203 to the accommodation space, and the spherical member 205 and the height positioning groove 2032 are aligned. When the fit is released, the elastic telescopic component 202 provided on the mounting plate 201 naturally stretches, driving the armrest body 100 to rise, and the stopper 206 rises along with the armrest body 100 through the lifting and pulling component 207. When the armrest body 100 rises to a preset height, the stopper 206 also rises to a preset height. After the positioning bracket 204 slidably connected to the stopper 206 rises, the elastic reset member 208 between the stopper 206 and the positioning bracket 204 is stretched. Under the tensile force of the elastic reset member 208, the positioning bracket 204 continues to rise to restore the positioning The relative positional relationship between the bracket 204 and the stopper 206 is such that, during the gradual upward reset process of the positioning bracket 204, the positioning hole 2041 on the positioning bracket 204 and the recessed portion 2061 on the stopper 206 gradually become misaligned, and the accommodation space formed between the recessed portion 2061 and the positioning hole 2041 gradually decreases until the side wall of the stopper 206 pushes the spherical member 205, causing the spherical member 205 to roll to a relatively higher height positioning groove 2032, thereby allowing the armrest body 100 to be stably stationary at a relatively higher position, thereby achieving the upward adjustment of the armrest body 100;When the armrest body 100 needs to be lowered, the stopper 206 is pulled up by the lifting and pulling component 207. As the stopper 206 is raised, the stopper 206 and the positioning bracket 204 are relatively displaced in the height direction, so that the recessed portion 2061 below the positioning hole 2041 is gradually aligned with the positioning hole 2041, and a larger accommodation space is formed between the recessed portion 2061 and the positioning hole 2041. The spherical member 205 moves from the height positioning groove 2032 of the positioning block 203 to the accommodation space, and the spherical member 205 is released from the height positioning groove 2032. At this time, downward pressure is applied to the armrest body 100, so that the armrest body 100 overcomes the telescopic force of the elastic telescopic component 202 and moves downward. After the armrest body 100 descends to a preset height, the lifting and pulling assembly 207 is released, and the elastic return member 208 between the stopper 206 and the positioning bracket 204 pulls the stopper 206 downward, restoring the relative positional relationship between the stopper 206 and the positioning bracket 204. This gradually causes the positioning hole 2041 on the positioning bracket 204 and the recessed portion 2061 on the stopper 206 to misalign, and the accommodation space formed between the recessed portion 2061 and the positioning hole 2041 gradually decreases until the sidewall of the stopper 206 pushes the ball 205, causing it to roll into a relatively lower height positioning groove 2032, thereby stably stationary in a relatively low position and achieving the downward adjustment of the armrest body 100.

[0043] It can be seen that the lifting armrest provided by the present invention can be adjusted up and down to meet the usage needs of people of different heights and improve riding comfort.

[0044] It should be understood that there are two positioning blocks 203, which are symmetrically arranged on both sides of the mounting plate 201. Each positioning block 203 is provided with a lifting guide groove 2031, and the two lifting guide grooves 2031 are arranged opposite to each other so that the two ends of the positioning bracket 204 are respectively slidably matched with the two lifting guide grooves 2031.

[0045] In addition, the present invention does not specifically limit the number of the height positioning grooves 2032 and the distance between adjacent height positioning grooves 2032. In actual applications, the number of the height positioning grooves 2032 and the distance between adjacent height positioning grooves 2032 can be adaptively adjusted. As long as the setting method can meet the use requirements, it falls within the protection scope of the present invention; optionally, Figure 4 As shown, in one embodiment of the present invention, there are three height positioning grooves 2032, which are the first height positioning groove 2032, the second height positioning groove 2032 and the third height positioning groove 2032 from bottom to top. Figure 7 This is a structural diagram of the lifting mechanism 200 lowering the armrest body 100 to the low position. At this time, the spherical member 205 is located in the first height positioning groove. Figure 8This is a structural diagram of the lifting mechanism 200 raising the armrest body 100 to the middle position. At this time, the spherical member 205 is located in the second height positioning groove. Figure 9 It is a structural diagram when the lifting mechanism 200 lifts the armrest body 100 to the high position. At this time, the spherical member 205 is located in the third height positioning groove.

[0046] Furthermore, the elastic reset member 208 may be a coil spring, an elastic tension rope, or a rubber block. As long as the elastic reset member 208 can generate a tensile force after being stretched and can reset the stopper 206, it falls within the protection scope of the present invention.

[0047] Furthermore, the lifting and pulling assembly 207 includes a buckle 2071 provided on the armrest body 100, a fork 2072 abutting against the buckle 2071, and a pull wire 2073 connected to the fork 2072. The fork 2072 is rotatably provided on the armrest body 100, and the end of the pull wire 2073 away from the fork 2072 is connected to the stopper 206. When it is necessary to release the engagement between the spherical member 205 and the height positioning groove 2032, the buckle 2071 is pulled to drive the fork 2072 abutting against it. Rotate, as the fork 2072 rotates, the pull wire 2073 pulls the stop block 206 to rise, and the stop block 206 and the positioning bracket 204 are relatively displaced in the height direction, so that the recessed portion 2061 located below the positioning hole 2041 is gradually aligned with the positioning hole 2041, and a larger accommodating space is formed between the recessed portion 2061 and the positioning hole 2041. The spherical part 205 moves from the height positioning groove 2032 of the positioning block 203 to the accommodating space, and the spherical part 205 is released from the height positioning groove 2032.

[0048] It should be noted that when the armrest body 100 is lowered, the buckle 2071 needs to be kept in the pulled state to keep the spherical member 205 out of the height positioning groove 2032. At the same time, downward pressure is applied to the armrest body 100 to make the armrest body 100 overcome the telescopic force of the elastic telescopic component 202 and move downward. After the armrest body 100 is lowered to the preset height, the buckle 2071 is released, and the elastic reset member 208 pulls the stopper 206 down to restore the stopper 206 and the positioning bracket. The relative position relationship between them causes the positioning hole 2041 on the positioning bracket 204 and the recessed portion 2061 on the stop block 206 to gradually misalign, and the accommodating space formed between the recessed portion 2061 and the positioning hole 2041 gradually decreases until the side wall of the stop block 206 pushes the spherical part 205, causing the spherical part 205 to roll to a relatively low height positioning groove 2032, so that the armrest body 100 can be stably stationary in a relatively low position, thereby realizing the downward adjustment of the armrest body 100.

[0049] The elastic telescopic component 202 provided by the present invention can adopt types such as coil springs, gas springs or rubber springs. As long as the telescopic component type can meet the use requirements, it belongs to the protection scope of the present invention; optionally, the elastic telescopic component 202 provided by the embodiment of the present invention includes a gas spring 2021 and a guide structure, so that the gas spring 2021 pushes the armrest body 100 to rise, thereby realizing the height adjustment of the armrest body 100, and the guide structure guides the lifting and lowering of the gas spring 2021 to improve the lifting and lowering stability and lifting trajectory accuracy of the gas spring 2021.

[0050] It should be understood that the present invention does not specifically limit the number of the above-mentioned gas springs 2021. In actual applications, multiple gas springs 2021 can be stacked and used to stack the telescopic strokes of multiple gas springs 2021 to increase the lifting stroke of the armrest body 100.

[0051] like Figure 3 As shown, in a specific embodiment of the present invention, the gas spring 2021 includes two gas springs 2021, namely a first gas spring 2021-a and a second gas spring 2021-b, the gas spring connecting bracket 2022 is slidably matched with the guide structure, one end of the gas spring connecting bracket 2022 is connected to the telescopic end of the first gas spring 2021-a, and the other end is connected to the non-telescopic end of the second gas spring 2021-b, and the telescopic end of the second gas spring 2021-b is connected to the armrest body 100 to be in contact with the spherical member 205 and the height positioning groove 2032. After the coupling is released, the first gas spring 2021-a and the second gas spring 2021-b extend at the same time. At the same time, the extension of the first gas spring 2021-a raises the gas spring connecting bracket 2022. As the gas spring connecting bracket 2022 rises, the non-retractable end of the second gas spring 2021-b rises. The rising height of the armrest body 100 is the superposition of the extension heights of the first gas spring 2021-a and the second gas spring 2021-b. Compared with the single gas spring 2021 setting method, the height adjustment range of the armrest body 100 is increased.

[0052] The above-mentioned guide structure can be a guide rail, a guide groove or a guide rod, etc. As long as the structure can meet the guidance requirements, it falls within the protection scope of the present invention; optionally, in a specific embodiment of the present invention, a guide bracket 2023 is provided on the mounting plate 201, and a guide gap is formed between the guide bracket 2023 and the mounting plate 201. The guide gap is the guide structure, and the gas spring connecting bracket 2022 is guided by the guide gap, thereby achieving guidance of the gas spring 2021.

[0053] In order to maintain the lifting stability of the above-mentioned armrest body 100, the elastic telescopic component 202 also includes a third gas spring and a fourth gas spring. Along the center line of the block 206 in the vertical direction, the third gas spring and the first gas spring 2021-a are symmetrically arranged, and the fourth gas spring and the second gas spring 2021-b are symmetrically arranged to improve the force balance of the armrest body 100, thereby improving the lifting stability of the armrest body 100.

[0054] like Figure 2 As shown, the armrest body 100 includes an armrest support 101 and an armrest cover 102 . The armrest cover 102 and the armrest support 101 enclose an installation space to install the lifting and pulling assembly 207 in the installation space.

[0055] The lifting armrest provided by the present invention further includes a seat connecting bracket 300 provided on the mounting plate 201 , for mounting the lifting armrest on the seat via the seat connecting bracket 300 .

[0056] It should be noted that the present invention does not impose any specific restrictions on parameters such as the shape, material and quantity of the seat connecting bracket 300. As long as the parameters can meet the mechanical performance requirements of the lifting armrest, they are within the protection scope of the present invention.

[0057] In addition, the lifting armrest also includes an armrest cover 400, which is connected to the armrest body 100, and a sliding guide rail 209 is provided on the mounting plate 201. The armrest cover 400 is slidably connected to the sliding guide rail 209 through a slider, so that during the lifting process of the armrest body 100, the armrest cover 400 can be lifted and lowered along the sliding guide rail 209, covering the lifting mechanism 200 inside the armrest cover 400.

[0058] In addition, the lifting armrest also includes an armrest guard plate 500 arranged on the side of the armrest body 100 away from the armrest cover 400, so that the lifting mechanism 200 is located in the interlayer space between the armrest guard plate 500 and the armrest cover 400, preventing safety hazards caused by the exposure of the lifting mechanism 200, and at the same time, playing a decorative role on the appearance of the lifting armrest.

[0059] In addition, the present invention also discloses a seat and a vehicle, both of which include the lifting armrest as described above. Therefore, they have all the technical effects of the above-mentioned lifting armrest, which will not be described in detail herein.

[0060] The terms "first," "second," and the like in the specification, claims, and accompanying drawings of the present invention are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements and may include steps or elements that are not listed.

[0061] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting armrest, characterized in that: It includes an armrest body and a lifting mechanism for driving the armrest body to move up and down; Wherein, the lifting mechanism includes: Mounting plate; An elastic telescopic component is provided on the mounting plate, and a telescopic end of the elastic telescopic component is connected to the armrest body; A positioning block is fixedly mounted on the mounting plate, wherein the positioning block is provided with a lifting guide groove, and the bottom of the lifting guide groove is provided with at least two height positioning grooves along its height direction; A positioning bracket is slidably connected to the lifting guide slot, and the positioning bracket is connected to the armrest body, and a positioning hole is provided on a side of the positioning bracket close to the lifting guide slot; a spherical member, used to cooperate with the height positioning groove and the positioning hole to achieve positioning between the positioning block and the positioning bracket; a stopper slidably disposed on the positioning bracket, and a recessed portion is provided on a side of the stopper close to the positioning bracket, wherein when the spherical member is in a mating state with the height positioning groove and the positioning hole, the recessed portion is located below the positioning hole; A lifting and pulling assembly, provided on the armrest body, for pulling the stopper to perform lifting motion; and an elastic reset member, connecting the stopper and the positioning bracket; When the armrest body needs to be raised, the stop block is pulled up by the lifting and pulling assembly. As the stop block rises, the stop block and the positioning bracket are relatively displaced in the height direction, so that the recessed portion below the positioning hole is gradually aligned with the positioning hole, and a larger accommodating space is formed between the recessed portion and the positioning hole. The spherical part moves from the height positioning groove of the positioning block to the accommodating space, and the spherical part and the height positioning groove are released.

2. The lifting handrail according to claim 1, characterized in that: The lifting and pulling assembly includes a buckle provided on the armrest body, a fork abutting against the buckle, and a pull wire connected to the fork. The fork is rotatably provided on the armrest body, and the end of the pull wire away from the fork is connected to the stopper.

3. The lifting handrail according to claim 1, characterized in that: The elastic telescopic component includes a gas spring and a guide structure for guiding the lifting and lowering of the gas spring.

4. The lifting handrail according to claim 3, characterized in that: The gas spring includes a first gas spring, a second gas spring and a gas spring connecting bracket. The gas spring connecting bracket is slidably matched with the guide structure. One end of the gas spring connecting bracket is connected to the telescopic end of the first gas spring, and the other end is connected to the non-telescopic end of the second gas spring. The telescopic end of the second gas spring is connected to the armrest body.

5. The lifting handrail according to claim 1, characterized in that: The armrest body includes an armrest support and an armrest cover. The armrest cover and the armrest support are enclosed to form an installation space. The lifting and pulling assembly is installed in the installation space.

6. The lifting handrail according to claim 1, characterized in that: It also includes a connecting bracket arranged on the mounting plate, which is used to install the lifting armrest on the seat through the connecting bracket.

7. The lifting handrail according to claim 1, characterized in that: It also includes an armrest cover shell, which is connected to the armrest body, and a sliding guide rail is provided on the mounting plate, and the armrest cover shell is slidably connected to the sliding guide rail through a slider.

8. The lifting handrail according to claim 7, characterized in that: It also includes an armrest guard plate arranged on a side of the armrest body away from the armrest cover.

9. A seat, characterized in that: The utility model comprises the lifting armrest according to any one of claims 1 to 8.

10. A vehicle, characterized in that: The utility model comprises the lifting armrest according to any one of claims 1 to 8.

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