Armrest with multi-gear supporting and adjusting functions and seat with armrest

Abstract

The utility model relates to the technical field of seat facilities, in particular to an armrest with a multi-gear supporting and adjusting function and a seat with the armrest, and the armrest comprises an armrest frame and a supporting platform installed on the armrest frame. The supporting platform is installed on the armrest frame in a sliding mode, a rotatable locking bar is installed on the supporting platform, and the locking bar is provided with a plurality of locking parts which are arranged at intervals; the armrest frame is provided with a locking part which is configured to be clamped with any locking part; a movable pressing switch is further installed in the supporting platform, and the pressing switch can drive the locking strip to rotate to the locking position part of the locking strip to be separated from the locking part. The supporting platform is further provided with a reset mechanism capable of conducting elastic deformation, and the reset mechanism exerts elastic force on the locking bar to drive the locking bar to rotate till the locking portion is clamped with the locking portion. According to the armrest, the supporting position can be changed, a more stable supporting effect can be provided at different supporting positions, and the use experience can be optimized; the seat is provided with the armrest so that the use experience can be optimized.

Description

Technical Field

[0001] This utility model relates to the field of seating facilities technology, and more specifically to an armrest with multi-position adjustable support and a seat having the armrest. Background Technology

[0002] As a human body support device, a chair typically consists of two main functional units: the seat cushion module and the armrest assembly. Among these, the armrest structure plays a crucial role in ergonomic design. Based on biomechanical research, the effectiveness of armrest support directly affects the user's ability to maintain a resting state of the upper limb bony muscle groups (including the trapezius and deltoid muscles). Especially in situations where prolonged sitting is required, such as in office chairs, car cockpits, and medical rehabilitation equipment, proper armrest support can effectively distribute the static load on the upper limbs, reduce intervertebral disc pressure, and decrease the frequency of compensatory muscle contractions.

[0003] In existing technologies, to meet the needs of varying human body dimensions, adjustable handrail structures are commonly used. Specifically, the support platform for directly supporting the hands is movably mounted on the handrail frame (e.g., sliding installation), allowing the support platform to flexibly change its support position as needed. However, in actual use, it has been found that this movable support platform often fails to provide stable support, resulting in an unsatisfactory user experience. Utility Model Content

[0004] One of the purposes of this invention is to address the shortcomings of existing technologies by providing a handrail with multi-level support adjustment that can both change the support position and provide a more stable support effect at different support positions, thereby optimizing the user experience.

[0005] The second objective of this utility model is to provide a seat with the aforementioned armrests to optimize the user experience.

[0006] The technical solution of this utility model is as follows:

[0007] A handrail with multi-position adjustable support includes a handrail frame and a support platform mounted on the handrail frame;

[0008] The support platform is slidably installed on the handrail frame, and the support platform is equipped with a rotatable locking bar, on one side of which are provided several locking positions arranged at intervals;

[0009] The handrail has a locking part, which is configured to engage with any locking part, so that when the support platform slides to the point where any locking part can be aligned and engaged with the locking part, the locking part can be engaged or disengaged from the locking part by rotating the locking bar, so that the support platform can be in a non-sliding locked state or a sliding adjustable state.

[0010] The support platform is also equipped with a movable push switch, which is linked to the locking bar and configured to rotate the locking bar when it is moved by force, so that the locking part of the locking bar disengages from the locking part.

[0011] The support platform is also equipped with a return mechanism capable of elastic deformation, which is configured to apply a spring force to the lock bar to drive it to rotate until the locking part engages with the locking part.

[0012] In some designs, the support platform is hollow inside, the locking bar is housed in the cavity of the support platform, and the handrail has a mounting part that is inserted into the support platform and placed in the cavity of the support platform.

[0013] The locking part is provided on the mounting part, and the support platform has a sliding groove that makes way for the handrail when the support platform slides.

[0014] In some designs, a push switch is slidably mounted in a support platform. The sliding path of the push switch passes through the area where the lock bar is located, and when the push switch is pressed and the support platform moves, it can push the lock bar to rotate until the locking part of the lock bar disengages from the locking part.

[0015] In some designs, when no external force is applied, the end of the push switch away from the locking bar is configured to have a portion extending through the support platform, which forms a pressure zone for the application of external force.

[0016] In some designs, the locking part is a groove located on one side of the lock bar with its opening facing outwards;

[0017] The locking part is provided as a locking part that matches the groove structure, so that the protrusion in the locking part can be engaged.

[0018] In some designs, the mounting unit includes a retaining frame fixed to the handrail frame and a rotating frame rotatably connected to the retaining frame.

[0019] The support platform is slidably installed on the indexing frame, and the locking part is located on the indexing frame.

[0020] In some designs, the positioning frame includes: a transition column rotatably connected to the rotation frame, and a locking plate located on one side of the rotation frame;

[0021] The outer edge of the card plate is provided with several card slots that are spaced apart around the rotation center of the indexing frame;

[0022] The indexing frame is equipped with a sliding rotation positioning component, the sliding direction of which is perpendicular to the sliding direction of the support platform;

[0023] The rotating positioning component has a locking part, which is configured to engage with any locking part, and the rotating positioning component is linked to the locking bar so that it can slide in the rotating frame when the locking bar rotates, thereby achieving the following: when the support platform is in a non-slidable locked state or a slidable adjustment state, the rotating frame is simultaneously in a non-rotatable locked state or a rotatable movable state.

[0024] In some designs, the rotating positioning element includes:

[0025] A sliding plate that is slidably installed on the indexing frame;

[0026] A first linkage plate and a second linkage plate are connected to the sliding plate and respectively disposed on both sides of the lock bar;

[0027] The first linkage plate has a first pressing part that protrudes and presses against the lock bar. The end of the first pressing part that presses against the lock bar is round, arc-shaped, or conical.

[0028] The second linkage plate has a protruding second pressing part that presses against the lock bar. The end of the second pressing part that presses against the lock bar is circular, arc-shaped, or conical.

[0029] In some designs, at least two sliding plates are provided, one on each side of the card plate;

[0030] The first linkage plate is connected to two sliding plates, and / or the second linkage plate is connected to two sliding plates.

[0031] The seat includes the armrests described in any of the above options.

[0032] The main beneficial effects of the above technical solution are as follows:

[0033] By slidably mounting the support platform onto the handrail frame, and by setting a locking bar with several locking positions, and by setting a locking part on the handrail frame that can engage with the locking positions, the support platform can have multiple stable engagement positions on the handrail frame. The spatial position of the support platform is different in each position, so that the support platform can form a stable engagement support structure in multiple different positions in space according to the different needs of human body size parameters. This results in a handrail that can change the support position and provide a more stable support effect in different support positions, thereby optimizing the user experience.

[0034] Further or more detailed beneficial effects will be described in conjunction with specific embodiments in the detailed implementation. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the overall structure of the handrail.

[0037] Figure 2 This is a schematic diagram of the lock bar installation structure.

[0038] Figure 3 This is a structural diagram of the installation section.

[0039] Figure 4 This is a schematic diagram of the internal structure of the supporting platform.

[0040] Figure 5 A cross-sectional view showing the installation of the support platform.

[0041] Figure 6 A schematic diagram showing the platform in a non-sliding, locked state.

[0042] Figure 7 A schematic diagram illustrating the sliding and adjustable position of the support platform.

[0043] Figure 8 This is a schematic diagram of the installation structure of the rotating positioning component.

[0044] Figure 9 This is a schematic diagram showing the indexing frame in a non-rotatable, locked position.

[0045] Figure 10 This is a schematic diagram showing the rotating frame in a movable state. Detailed Implementation

[0046] The present invention will be illustrated with specific examples below:

[0047] Example 1:

[0048] Handrails, as attached Figure 1 The diagram shows a support structure for placing the hands of a passenger in a seat. It mainly includes an armrest frame 1 for fixed connection (e.g., fixed to the seat cushion) and a support platform 2 mounted on the armrest frame 1 for placing the hands.

[0049] Considering the varying needs of different human body dimensions, the support platform 2 is often movably connected to the handrail 1. For example, the support platform 2 can be slidably connected to the handrail 1 using a common sliding rail structure. This allows the support platform 2 to form a support structure that adapts to the needs of passengers at multiple different positions in space, based on the varying human body dimensions. However, this simple movable connection often results in the support platform 2 not being able to be stably positioned in a certain spatial location, thus failing to provide stable support. This causes unwanted swaying and displacement when the passenger's hands are placed on the support platform 2, resulting in the handrail often failing to provide satisfactory support and a poor user experience.

[0050] Based on this, this embodiment provides a handrail with multi-level support adjustment, which can not only change the support position, but also provide a more stable support effect at different support positions, so as to optimize the user experience.

[0051] Specifically, for example, attached Figure 2 As shown, in this embodiment, the support platform 2 is slidably installed on the handrail frame 1 through a common sliding connection structure (such as a drawer-type slide rail structure). The sliding connection structure can extend in the front-back direction so that the support platform 2 can slide in the front-back direction.

[0052] Meanwhile, the support platform 2 is equipped with a rotatable locking bar 3. For example, the locking bar 3 can be rotatably connected to a protruding column on the support platform 2, allowing the locking bar 3 to rotate relative to the support platform 2 around the column as a rotation axis. A plurality of locking positions 3.1 are arranged at intervals on one side of the locking bar 3, for example, attached... Figure 2 In the case where the locking bar 3 extends in the front-to-back direction, a plurality of locking parts 3.1 are provided on the right side of the locking bar 3, which are spaced apart in the front-to-back direction.

[0053] The handrail frame 1 is equipped with a locking part 1.13, which is matched with several locking parts 3.1. For example, it is attached with a locking part 1.13. Figure 2 As shown, a locking portion 1.13 is provided on the right side of the locking bar 3. This locking portion 1.13 is configured to engage with any locking position portion 3.1. The locking position portion 3.1 can be a groove provided on one side of the locking bar 3 with its opening facing outwards; the locking portion 1.13 is provided to match the groove structure of the locking position portion 3.1 so as to engage with the protrusion in the locking position portion 3.1. Alternatively, the locking position portion 3.1 can be a protrusion provided on one side of the locking bar 3 with its opening facing outwards; the locking portion 1.13 is provided to match the protrusion structure of the locking position portion 3.1 so as to allow the locking position portion 3.1 to engage with it.

[0054] Achievement: When the support platform 2 slides to the point where any locking part 3.1 can be aligned and engaged with the locking part 1.13, the locking part 1.13 is engaged with the locking part 3.1 by rotating the locking bar 3, thus achieving a non-sliding locked state for the support platform 2 (see attached diagram). Figure 6 (as shown in the diagram); or by rotating the locking bar 3, the locking part 1.13 can be disengaged from the locking part 3.1, allowing the support platform 2 to be in a slidable adjustment state (see attached diagram). Figure 7 (The state shown).

[0055] In this way, the support platform 2 has multiple stable locking positions on the handrail 1, and the spatial position of the support platform 2 is different in each position, so that the support platform 2 can form a stable locking support structure in multiple different positions in space according to the different needs of human body size parameters.

[0056] That is, when it is necessary to adjust the position of the support platform 2, simply rotate the locking bar 3 to disengage the locking part 1.13 from the locking part 3.1. The support platform 2 will then be in an adjustable state where it can move back and forth on the handrail frame 1. It can be moved to a position that meets the needs of the passenger's hands for support by pushing the support platform 2 with both hands. At this time, rotating the locking bar 3 again will engage the locking part 1.13 with the locking part 3.1, and the support platform 2 will be in a locked state where it cannot slide, providing stable support for the passenger's hands in this position.

[0057] However, there is a problem of difficulty in applying force directly to the locking bar 3. Based on this, in this embodiment, a movable push switch 4 is also installed in the support platform 2. The push switch 4 is linked to the locking bar 3 and is configured to drive the locking bar 3 to rotate when it is moved by force (for example, when the push switch 4 is moved by pressure or tension), so that the locking part 3.1 of the locking bar 3 is disengaged from the locking part 1.13.

[0058] Simultaneously, the support platform 2 is also provided with a return mechanism 5 capable of elastic deformation, which is configured to apply an elastic force to the locking bar 3 to drive it to rotate until the locking part 3.1 engages with the locking part 1.13.

[0059] In this embodiment, in order to more easily apply force to drive the push switch 4, for example, an attachment is provided. Figure 2 As shown, the push switch 4 is slidably mounted in the support platform 2 via a common sliding connection structure (such as a drawer-type slide rail structure), for example, attached... Figure 2 As shown, the push switch 4 is located on the left side of the locking bar 3, and the push switch 4 and the locking part 3.1 are located on the front and rear sides of the rotation center of the locking bar 3. The sliding trajectory of the push switch 4 passes through the area where the locking bar 3 is located, and when the push switch 4 is pressed and moves into the support platform 2, it can push the locking bar 3 to rotate until the locking part 3.1 of the locking bar 3 disengages from the locking part 1.13.

[0060] For example, attached Figure 2 As shown in the figure, the return mechanism 5 in this embodiment can be a spring. The spring is placed between the support platform 2 and the locking bar 3. When the locking bar 3 rotates to the point where the locking part 3.1 of the locking bar 3 disengages from the locking part 1.13, the spring is in a compressed state. When the pressing action on the push switch 4 is released, the spring restores its elastic deformation and applies a spring force to the locking bar 3 to drive it to rotate to the point where the locking part 3.1 engages with the locking part 1.13.

[0061] In this way, by applying force to the push switch 4, the lock bar 3 can be driven to rotate until the locking part 3.1 of the lock bar 3 disengages from the locking part 1.13, and the support platform 2 can be in a sliding adjustment state for position adjustment; after the position adjustment is completed, the force applied to the push switch 4 is released, and under the rebound action of the return mechanism 5, the lock bar 3 is driven to rotate until the locking part 3.1 engages with the locking part 1.13, so that the support platform 2 is in a non-sliding locked state, and the positioning is completed.

[0062] In the above scheme, the locking bar 3 can be installed outside the support platform 2 or inside the support platform 2. However, when the locking bar 3 is installed outside the support platform 2, it is easy for the locking bar 3 to be jammed by various materials.

[0063] Therefore, in this embodiment, as shown in the appendix Figures 2 to 5 As shown, the support platform 2 can be hollow inside, and the locking bar 3 is housed within the cavity of the support platform 2. The handrail 1 has a mounting portion 1.1 that is inserted into the support platform 2 and placed within the cavity of the support platform 2. A locking portion 1.13 is provided on the mounting portion 1.1, and the support platform 2 has a sliding groove 2.1 that creates clearance for the handrail 1 when the support platform 2 slides. By embedding the locking bar 3 and the corresponding locking structure inside the support platform 2, the support platform 2 can be formed with a protective shell that protects the locking bar 3 and the corresponding locking structure.

[0064] At this time, when no external force is applied, the end of the push switch 4 away from the locking bar 3 is configured to have a portion extending through the support platform 2, which forms a pressure-bearing area for applying external force. This improves the ease of pressing the push switch 4.

[0065] In this embodiment, the support platform 2, serving as a support structure for both hands, is typically made of materials such as plastic; while the mounting portion 1.1 used for support is typically made of metal. Therefore, the locking portion 3.1 is preferably a groove located on one side of the locking bar 3 with its opening facing outwards. The locking portion 1.13 is provided to match the groove structure of the locking portion 3.1, allowing it to engage with the protrusion in the locking portion 3.1. The variable protrusion structure can be a metal protrusion extending from the mounting portion 1.1, providing a longer service life.

[0066] Furthermore, in any of the above schemes, to further improve the adjustability of support platform 2, see attached... Figure 8 As shown, in this embodiment, the mounting part 1.1 includes a fixed frame 1.11 fixed to the handrail frame 1, and a rotating frame 1.12 rotatably connected to the fixed frame 1.11; the support platform 2 is slidably mounted on the rotating frame 1.12 by a common sliding connection structure (e.g., a drawer-type slide rail structure), and a locking part 1.13 is provided on the rotating frame 1.12.

[0067] In this way, the support platform 2 can not only slide, but also rotate with the rotation frame 1.12, making the support platform 2 have a larger range of movement in space and better meeting the needs of human body size parameters.

[0068] At this time, the fixing frame 1.11 may include: a transition column 1.111 rotatably connected to the indexing frame 1.12, and a retaining plate 1.112 placed on one side of the indexing frame 1.12; for example, attached Figure 8 To be continued Figure 10 As shown, the lower end of the adapter post 1.111 is fixed to the main body of the handrail frame 1. The adapter post 1.111 is inserted into the shift frame 1.12 and rotatably connected to the shift frame 1.12. The upper end of the adapter post 1.111 is connected to a locking plate 1.112 located above the shift frame 1.12. The locking strip 3 is located in the area above the shift frame 1.12 and above the locking plate 1.112.

[0069] The outer edge of the card plate 1.112 is provided with several card slots 1.113 distributed at intervals around the rotation center of the indexing frame 1.12; the indexing frame 1.12 is also equipped with a slidable rotation positioning member 6, the sliding direction of which is perpendicular to the sliding direction of the support platform 2.

[0070] Meanwhile, the rotation positioning member 6 has a locking portion 6.4, which is configured to engage with any locking portion 1.113. In this embodiment, the locking portion 1.113 is a groove spaced around the rotation center of the rotation frame 1.12; the locking portion 6.4 is provided to match the locking portion 1.113 with the groove structure so as to engage with the protrusion in the locking portion 1.113.

[0071] Furthermore, the rotating positioning component 6 is linked to the locking bar 3 so that it can slide in the shifting frame 1.12 when the locking bar 3 rotates, thereby achieving the following: when the support platform 2 is in a non-slidable locked state or a slidable adjustment state, the shifting frame 1.12 is simultaneously in a non-rotatable locking state or a rotatable movable state.

[0072] Specifically, in this embodiment, the rotating positioning component 6 includes: a sliding plate 6.1, a first linkage plate 6.2, and a second linkage plate 6.3.

[0073] The sliding plate 6.1 is a plate that is slidably installed in the rotating frame 1.12 and whose sliding direction is perpendicular to the sliding direction of the support platform 2. The first linkage plate 6.2 is connected to the sliding plate 6.1 and is located on the left side of the locking bar 3. The second linkage plate 6.3 is connected to the sliding plate 6.1 and is located on the right side of the locking bar 3. Moreover, the first linkage plate 6.2 has a first pressing part 6.21 that protrudes and presses against the locking bar 3, and the end of the first pressing part 6.21 that presses against the locking bar 3 is circular, arc-shaped, or conical. The second linkage plate 6.3 has a second pressing part 6.31 that protrudes and presses against the locking bar 3, and the end of the second pressing part 6.31 that presses against the locking bar 3 is circular, arc-shaped, or conical.

[0074] When the locking bar 3 rotates to the point where the locking part 3.1 of the locking bar 3 disengages from the locking part 1.13, the locking bar 3 pushes against the first pressing part 6.21, causing the rotating positioning member 6 to slide to the locking part 6.4 and disengage from the locking part 1.113.

[0075] When the locking bar 3 rotates to the point where the locking part 3.1 of the locking bar 3 engages with the locking part 1.13, the locking bar 3 pushes the second pressing part 6.31, causing the rotating positioning member 6 to slide to the point where the locking part 6.4 engages with the locking part 1.113.

[0076] Thus, when the push switch 4 is pressed as described above, causing the locking bar 3 to rotate until the locking part 3.1 of the locking bar 3 disengages from the locking part 1.13, and the support platform 2 is in a slidable adjustment state; the locking bar 3 drives the rotating positioning member 6 to slide until the locking part 1.113 disengages from the locking part 6.4, and the rotating frame 1.12 simultaneously becomes rotatable, for example, attached Figure 10 As shown. At this time, it can not only drive the support platform 2 to slide on the indexing frame 1.12, but also drive the indexing frame 1.12 and the support platform 2 to rotate synchronously, thereby changing the spatial position of the support platform 2.

[0077] After the position adjustment is completed, releasing the pressure on the push switch 4 will cause the locking bar 3 to rotate under the rebound action of the return mechanism 5 until the locking part 3.1 engages with the locking part 1.13, making the support platform 2 in a non-sliding locked state; the locking bar 3 drives the rotating positioning part 6 to slide until the locking part 6.4 engages with one of the locking parts 1.113, and the rotating frame 1.12 simultaneously enters a non-rotatable locked state, as shown in the attached figure. Figure 9 As shown, the positioning is complete.

[0078] In this embodiment, at least two sliding plates 6.1 are provided and are respectively placed on both sides of the locking plate 1.112 (e.g., the front and rear sides of the locking plate 1.112); the first linkage plate 6.2 is connected to the two sliding plates 6.1; the second linkage plate 6.3 can also be connected to the two sliding plates 6.1 to improve the stability of the overall structure of the rotating positioning component 6 and extend the service life of the handrail.

[0079] Example 2:

[0080] The seat includes armrests as described in any of the embodiments in Example 1, a seat cushion for seating, and may also include a base for supporting the seat cushion. The armrest frame 1 can be fixed to the seat cushion or, if the base is present, fixed to the base. The armrest support platform 2 is positioned on one side of the seat cushion or above the edge of the seat cushion, providing a place for the hands of a person sitting on the seat cushion. According to the description in Example 1, the position of the support platform 2 can be adjusted to create an armrest support structure that better suits the needs of the user based on differences in human body size parameters, thus optimizing the user experience of the seat.

[0081] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present utility model, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model according to the specific circumstances.

[0082] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A handrail with multi-position adjustable support, comprising a handrail frame (1) and a support platform (2) mounted on the handrail frame (1), characterized in that: The support platform (2) is slidably installed on the handrail frame (1), and the support platform (2) is equipped with a rotatable locking bar (3), and a plurality of locking parts (3.1) are arranged at intervals on one side of the locking bar (3). The handrail (1) has a locking part (1.13) configured to engage with any of the locking parts (3.1) so that: the support platform (2) slides to either of the locking parts (3.1) 3.1) When it can be aligned and engaged with the locking part (1.13), the locking part (1.13) can be engaged or disengaged from the locking part (3.1) by rotating the locking bar (3), so that the support platform (2) can be in a non-sliding locked state or a sliding adjustable state. The support platform (2) is also equipped with a movable push switch (4), which is linked to the lock bar (3) and is configured to: when moved by force, drive the lock bar (3) to rotate until the locking part (3.1) of the lock bar (3) is disengaged from the locking part (1.13); The support platform (2) is also provided with a return mechanism (5) capable of elastic deformation, which is configured to apply an elastic force to the locking bar (3) to drive it to rotate until the locking part (3.1) and the locking part (1.13) engage.

2. The handrail with multi-position adjustable support according to claim 1, characterized in that: The support platform (2) has a hollow interior, the locking bar (3) is housed in the hollow interior of the support platform (2), and the handrail (1) has a mounting part (1.1) that is inserted into the support platform (2) and placed in the hollow interior of the support platform (2). The locking part (1.13) is provided on the mounting part (1.1), and the support platform (2) has a sliding groove (2.1) that makes way for the handrail (1) when the support platform (2) slides.

3. The handrail with multi-position adjustable support according to claim 2, characterized in that: The push switch (4) is slidably installed in the support platform (2). The sliding trajectory of the push switch (4) passes through the area where the lock bar (3) is located, and when the push switch (4) is pressed and moves into the support platform (2), it can push the lock bar (3) to rotate until the locking part (3.1) of the lock bar (3) is disengaged from the locking part (1.13).

4. The handrail with multi-position adjustable support according to claim 3, characterized in that: When not subjected to external force, the end of the push switch (4) away from the lock bar (3) is configured to have a portion extending through the support platform (2), which forms a pressure area for external force to be applied.

5. The handrail with multi-position adjustable support according to claim 2, characterized in that: The locking part (3.1) is a groove provided on one side of the locking bar (3) with the opening facing outward; The locking part (1.13) is provided for the locking part (3.1) that matches the groove structure, so that it can be engaged with the protrusion in the locking part (3.1).

6. The handrail with multi-position adjustable support according to any one of claims 2 to 5, characterized in that: The mounting part (1.1) includes a fixed frame (1.11) fixedly connected to the handrail frame (1), and a rotating frame (1.12) rotatably connected to the fixed frame (1.11). The support platform (2) is slidably installed on the transposition frame (1.12), and the locking part (1.13) is provided on the transposition frame (1.12).

7. The handrail with multi-position adjustable support according to claim 6, characterized in that: The fixed frame (1.11) includes: a transition column (1.111) rotatably connected to the rotating frame (1.12), and a snap-fit ​​plate (1.112) placed on one side of the rotating frame (1.12). The outer edge of the card plate (1.112) is provided with a plurality of card slots (1.113) distributed at intervals around the rotation center of the rotating frame (1.12). The rotating frame (1.12) is equipped with a slidable rotating positioning component (6), the sliding direction of which is perpendicular to the sliding direction of the support platform (2); The rotating positioning member (6) has a locking part (6.4), which is configured to engage with any of the locking parts (1.113), and the rotating positioning member (6) is linked to the locking bar (3) so that it can slide in the rotating frame (1.12) when the locking bar (3) rotates, thereby realizing that when the support platform (2) is in a non-slidable locked state or a slidable adjustment state, the rotating frame (1.12) is simultaneously in a non-rotatable locking state or a rotatable movable state.

8. The handrail with multi-position adjustable support according to claim 7, characterized in that: The rotating positioning element (6) includes: A sliding plate (6.1) is slidably installed on the indexing frame (1.12). A first linkage plate (6.2) and a second linkage plate (6.3) are connected to the sliding plate (6.1) and respectively disposed on both sides of the lock bar (3); The first linkage plate (6.2) has a first pressing part (6.21) that protrudes and presses against the lock bar (3). The end of the first pressing part (6.21) that presses against the lock bar (3) is circular, arc-shaped, or conical. The second linkage plate (6.3) has a second pressing part (6.31) that protrudes and presses against the lock bar (3). The end of the second pressing part (6.31) that presses against the lock bar (3) is circular, arc-shaped or conical.

9. The handrail with multi-position adjustable support according to claim 8, characterized in that: At least two sliding plates (6.1) are provided, and are respectively placed on both sides of the card plate (1.112); The first linkage plate (6.2) is connected to the two sliding plates (6.1), and / or the second linkage plate (6.3) is connected to the two sliding plates (6.1).

10. A seat, characterized in that: It includes the handrail with multi-position support adjustment as described in any one of claims 1 to 9.

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