Handrail structure and wheelchair

Abstract

This disclosure provides an armrest structure and a wheelchair. The armrest structure includes a mounting mechanism; one bottom end of a protective plate is hinged to the mounting mechanism so that the protective plate can rotate relative to the mounting mechanism, and the protective plate has an open state and a latched state; a locking mechanism is rotatably disposed at the other bottom end of the protective plate, used to lock the protective plate to the mounting mechanism when it is in the latched state, and to allow the protective plate to rotate to the open state when unlocked; the armrest mechanism is slidably connected to the protective plate and can be raised and lowered relative to the height of the protective plate. The armrest structure and wheelchair of this disclosure can switch between the open and latched states of the protective plate, making it much easier for users to enter and exit the device when the protective plate is open; the armrest mechanism can slide and rise and fall along the height of the protective plate, and users can adjust the position of the armrest mechanism according to their height, body shape, or specific posture needs, improving the versatility of the product and the user experience.

Description

Technical Field

[0001] This disclosure relates to the field of medical device technology, and in particular to an armrest structure and a wheelchair. Background Technology

[0002] Wheelchairs are essential mobility aids for elderly people with limited mobility or those with temporary functional impairments. However, existing wheelchair armrests have the following problems: wheelchairs with fixed armrests make it inconvenient for passengers to transfer and are not suitable for people of different heights. In addition, most wheelchair armrests in the industry are assembled from individual components, resulting in a relatively scattered structure and poor overall integrity and strength. Utility Model Content

[0003] This disclosure provides an armrest structure and a wheelchair to at least solve the above-mentioned technical problems existing in the prior art.

[0004] According to a first aspect of this disclosure, a handrail structure is provided, comprising:

[0005] Installation organization;

[0006] A protective plate, one bottom end of which is hinged to the mounting mechanism so that the protective plate can rotate relative to the mounting mechanism; the protective plate has an open state and a latched state.

[0007] A locking mechanism, rotatably mounted at the other end of the bottom of the protective plate, is used to lock the protective plate to the mounting mechanism when it is in the latched state, and to allow the protective plate to rotate to the open state when unlocked; and

[0008] The handrail mechanism is slidably connected to the protective plate and can be raised and lowered relative to the height of the protective plate.

[0009] In one embodiment, the locking mechanism includes a lever and a pin, the mounting mechanism includes a locking seat, and the protective plate has a mounting hole for the pin to pass through; wherein,

[0010] The pin is connected to the lever and can slide within the mounting hole under the action of the lever;

[0011] The pin passes through the mounting hole of the protective plate and is fixedly connected to the lever;

[0012] The locking seat has a locking hole. When the protective plate is in the snap-fit ​​state and locked with the mounting mechanism, the pin is inserted into the locking hole.

[0013] In one embodiment, the locking mechanism further includes a first elastic element, which is sleeved on the pin and accommodated in the mounting hole. One end of the first elastic element abuts against the abutting portion on the pin, and the other end abuts against the inner end face of the mounting hole.

[0014] In one embodiment, the locking seat is provided with a guide surface.

[0015] In one embodiment, the protective plate is provided with a lifting sleeve and a positioning part, and the handrail mechanism includes a handrail assembly and a lifting assembly; wherein,

[0016] The lifting sleeve is provided with a through hole;

[0017] The lifting assembly includes a pull button and a lifting rod fixedly connected to the handrail assembly. The lifting rod is slidably engaged with the lifting sleeve, and the lifting rod has multiple limiting holes.

[0018] The pull button is sequentially inserted through the through hole and one of the plurality of limiting holes, and connected to the positioning part.

[0019] In one embodiment, the pull button includes a limiting part and a plug part that are connected to each other;

[0020] Multiple limiting holes are connected to form a slide rail, and each limiting hole is provided with a limiting groove. The limiting groove is formed on the side of the lifting rod away from the positioning part, and is used to cooperate with the limiting part for limiting.

[0021] When the limiting part disengages from the limiting groove, the lifting rod can slide relative to the insertion rod part along the slide rail.

[0022] In one embodiment, the positioning part is movable relative to the protective plate along the axial direction of the through hole, and the insertion rod part is fixedly connected to the positioning part;

[0023] The lifting assembly further includes a second elastic element, which is sleeved on the insertion rod portion and abuts against the positioning portion and the lifting sleeve.

[0024] In one embodiment, the lifting sleeve includes a sliding space and a limiting space, the lifting rod is disposed in the sliding space, one end of the second elastic member abuts against the positioning part, and the other end abuts against the inner wall of the limiting space.

[0025] In one embodiment, the installation mechanism is provided with a limit block, which is used to limit the angle of the protective plate when it is in the open state.

[0026] According to a second aspect of this disclosure, a wheelchair is provided, including a main body, wherein the main body is provided with an armrest structure as described in any of the above-described embodiments, and the mounting mechanism is fixedly connected to the main body.

[0027] In this disclosure, the protective panel of the handrail structure, through its hinged design, can easily switch between an open and a locked state. When open, the panel greatly facilitates user access to and from the device, as well as cleaning and maintenance. When locked, the locking mechanism securely holds the panel to the mounting mechanism, preventing accidental loosening or opening due to external force or vibration during use, ensuring continuous protection and user safety. The handrail mechanism can slide and rise along the height of the protective panel, allowing users to adjust its position according to their height, body type, or specific posture requirements, enhancing the product's versatility and user experience. Thus, the handrail achieves rotatable protection, height adjustment, and convenient locking and unlocking functions.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0029] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0030] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0031] Figure 1 A schematic diagram of the overall structure of a handrail structure according to an exemplary embodiment of the present disclosure is shown;

[0032] Figure 2 A cross-sectional view of the locking mechanism of an exemplary embodiment of the handrail structure of this disclosure is shown. Figure 1 ;

[0033] Figure 3 A cross-sectional view of the locking mechanism of an exemplary embodiment of the handrail structure of this disclosure is shown. Figure 2 ;

[0034] Figure 4 A cross-sectional view of the locking mechanism of an exemplary embodiment of the handrail structure of this disclosure is shown. Figure 3 ;

[0035] Figure 5 A schematic diagram of the handrail mechanism structure of an exemplary embodiment of the present disclosure is shown;

[0036] Figure 6 A schematic diagram of a lifting sleeve structure of an exemplary embodiment of the handrail structure disclosed herein is shown.

[0037] Figure 7 A schematic diagram of a lifting rod structure of an exemplary embodiment of the handrail structure disclosed herein is shown.

[0038] Figure 8 A schematic diagram of the overall structure of a wheelchair, an exemplary embodiment of the present disclosure, is shown.

[0039] The following are the labels in the diagram: 1. Installation mechanism; 2. Protective plate; 3. Locking mechanism; 4. Handrail mechanism; 5. Lifting sleeve; 6. Positioning part; 7. Main body; 11. Hinge seat; 12. Locking seat; 13. Limiting block; 21. Mounting hole; 31. Lever; 32. Pin; 33. Rotating shaft; 34. First elastic element; 41. Handrail assembly; 42. Lifting assembly; 50. Through hole; 51. Sliding space; 52. Limiting space; 121. Locking hole; 122. Guide surface; 311. Waist hole; 421. Pull button; 422. Lifting rod; 423. Second elastic element; 4211. Limiting part; 4212. Insert rod part; 4220. Slide rail; 4220a. Limiting hole; 4220b. Limiting groove. Detailed Implementation

[0040] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0041] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0042] Reference Figure 1 As shown, an exemplary embodiment of the present disclosure discloses a handrail structure including a mounting mechanism 1, a protective plate 2, a locking mechanism 3, and a handrail mechanism 4. One bottom end of the protective plate 2 is hinged to the mounting mechanism 1, allowing the protective plate 2 to rotate relative to the mounting mechanism 1. The protective plate 2 has an open state and a latched state. The locking mechanism 3 is rotatably disposed at the other bottom end of the protective plate 2, used to lock the protective plate 2 to the mounting mechanism 1 when it is in the latched state, and to allow the protective plate 2 to rotate to the open state when unlocked. The handrail mechanism 4 is slidably connected to the protective plate 2 and can move up and down relative to the height of the protective plate 2.

[0043] In this embodiment, the mounting mechanism 1 serves as the fixed foundation for the entire handrail structure, used to stably install the handrail structure onto the corresponding device, such as a wheelchair, chair, or hospital bed. The mounting mechanism 1 can be, but is not limited to, a plate-like, rod-like, frame structure, or seat structure, and is fixed to the corresponding device through fastening or snap-fit ​​connections. One bottom end of the protective plate 2 is hinged to the hinge seat 11 of the mounting mechanism 1. The hinge structure can use common hinge components such as hinges or rotating shafts. This hinged connection allows the protective plate 2 to rotate freely relative to the mounting mechanism 1, thereby enabling the protective plate 2 to switch between an open and closed state. In the closed state, the protective plate 2 provides effective lateral protection and support for the user, preventing accidental tilting or collisions during use. When cleaning or maintenance of the device is required, or when the user needs to enter or exit the device, the protective plate 2 can be rotated to the open state for convenient operation, improving flexibility and convenience. The locking mechanism 3 is rotatably mounted at the other end of the bottom of the protective plate 2. Its main function is to securely lock the protective plate 2 to the mounting mechanism 1 when it is in the latched state, ensuring that the protective plate 2 will not be accidentally loosened or opened due to external force during use, thus ensuring user safety. When unlocking is required, the locking mechanism 3 is operated to release the protective plate 2, allowing it to rotate smoothly to the open state. The locking mechanism 3 typically includes a locking component and an operating component. When the protective plate 2 is in the latched state, the operating component, such as rotating a knob or pressing a button, is operated to make the locking component tightly engage with the corresponding locking position on the mounting mechanism 1, achieving a secure lock on the protective plate 2. The locking mechanism 3 may contain elastic elements such as springs to provide a certain preload force, ensuring the reliability of the locking. When unlocking is required, the operating component is operated again to overcome the spring force, causing the locking component to separate from the mounting mechanism 1, thereby releasing the protective plate 2 and allowing it to rotate smoothly to the open state. The handrail mechanism 4 and the protective plate 2 are slidably connected. For example, a guide rail or groove can be provided on the protective plate 2, and a matching slider or pulley can be provided on the handrail mechanism 4, allowing the handrail mechanism 4 to be adjusted up and down along the height of the protective plate 2. The height adjustment of the handrail mechanism 4 can be achieved by setting a limit device or a locking device. When the user needs to adjust the height of the handrail, first release the restriction of the locking device, then slide the handrail mechanism 4 up or down to a suitable position according to their own comfort requirements, and finally lock the locking device again to fix the handrail mechanism 4 at the desired height. This height-adjustable design can meet the needs of users of different heights. Users can adjust the handrail mechanism 4 to a suitable height position according to their own comfort, thereby improving the comfort and personalized experience of use and reducing physical fatigue caused by unsuitable handrail height.Understandably, the design of the armrest mechanism 4 should conform to ergonomic principles, and its surface can be padded to improve the user's grip comfort, which will not be elaborated on here.

[0044] In summary, the protective plate 2 in the handrail structure of this disclosure, through its hinged design, can easily switch between an open and a locked state. When open, the protective plate 2 greatly facilitates user access to and from the device, as well as cleaning and maintenance. When locked, the locking mechanism 3 securely holds the protective plate 2 to the mounting mechanism 1, preventing accidental loosening or opening due to external force or vibration during use, ensuring the continuity of the protective function and user safety. The handrail mechanism 4 can slide and rise along the height of the protective plate 2, allowing users to adjust its position according to their height, body type, or specific posture requirements, thus improving the product's versatility and user experience. Therefore, the handrail achieves rotatable protection, adjustable height, and convenient locking and unlocking functions.

[0045] Reference Figure 2 and Figure 3 As shown, in one embodiment, the locking mechanism 3 includes a lever 31 and a pin 32, and the mounting mechanism 1 includes a locking seat 12. The protective plate 2 has a mounting hole for the pin 32 to pass through. The lever 31 is rotatably mounted on the protective plate 2 via a pivot 33. The pin 32 is connected to the lever 31 and can slide within the mounting hole 21 under the influence of the lever 31. The locking seat 12 has a locking hole 121. When the protective plate 2 is in a snap-fit ​​state and locked with the mounting mechanism 1, the pin 32 is inserted into the locking hole 121.

[0046] In this embodiment, the user can manually move the lever 31 to rotate it around the pivot 33, thereby driving the pin 32 to move and achieve locking and unlocking functions. The pin 32 passes through the mounting hole 21 of the protective plate 2 and is connected to the lever 31. When the lever 31 rotates, the pin 32 moves synchronously. The design of the pin 32 should ensure that it can slide smoothly in the mounting hole 21 of the protective plate 2 and precisely cooperate with the lock hole 121 on the locking seat 12 to achieve a reliable locking effect. For example, at the position where the pin 32 connects to the lever 31, the lever 31 is provided with a waist hole 311. When the lever 31 is pulled upward, the lever 31 rotates around the pivot 33 on the protective plate 2, and drives the pin 32 to gradually move away from the lock hole 121 through the waist hole 311 until it is completely disengaged from the lock hole 121, thereby unlocking the protective plate 2 from the mounting mechanism 1. The material of the pin 32 should have sufficient strength and wear resistance to ensure that it is not easily damaged during frequent use and to ensure the long-term stability of the handrail structure. Understandably, as part of the mounting mechanism 1, the locking seat 12's position and the size of the lock hole 121 should match the pin 32 to ensure that the pin 32 can be accurately inserted into the lock hole 121 when the protective plate 2 is fastened, achieving a secure lock. This locking mechanism 3 design makes operation simple, allowing users to easily control the opening and closing of the protective plate 2 without the need for other tools, thus improving ease of use.

[0047] In one embodiment, the locking mechanism 3 further includes a first elastic member 34, which is sleeved on the pin 32 and accommodated in the mounting hole 21. One end of the first elastic member 34 abuts against the abutting portion on the pin 32, and the other end of the first elastic member 34 abuts against the inner end face of the mounting hole 21.

[0048] In this embodiment, the end of the pin 32 that is inserted into the lock hole 121 is defined as the locking end, and an abutment portion is formed on the locking end. Since one end of the first elastic member 34 abuts against the abutment portion and the other end abuts against the inner end face of the mounting hole 21, when unlocking is required, the user pulls the lever 31. The lever 31 causes the pin 32 to overcome the preload of the first elastic member 34 and generate axial displacement, so that the locking end of the pin 32 located in the locking seat 12 completely exits from the lock hole 121 of the locking seat 12, releasing the movement constraint on the protective plate 2. During this process, the first elastic member 34 is continuously compressed and stores energy, providing elastic potential energy for subsequent automatic reset. When the protective plate 2 changes from the open state to the closed state, the pin 32 is first squeezed by the locking seat 12, which compresses and stores energy in the first elastic element 34. When the mounting hole 21 of the protective plate 2 and the locking hole 121 of the locking seat 12 reach the coaxial position, the first elastic element 34 releases the stored elastic potential energy, driving the pin 32 to automatically complete the insertion action and enter the locking hole 121 to lock, ensuring that the protective plate 2 is firmly fixed in the latched state.

[0049] Reference Figure 4As shown, in one possible embodiment, the locking seat 12 is provided with a guide surface 122.

[0050] In this embodiment, by providing a guide surface 122 on the locking seat 12, the pin 32 can be effectively guided into the lock hole 121, allowing the pin 32 to align more smoothly with and be inserted into the lock hole 121 during the locking process of the protective plate 2, thus improving the convenience and accuracy of the locking operation. The guide surface 122 can be designed as a tapered or inclined surface around the lock hole 121, and its angle and shape should be adapted to the shape of the pin 32 to achieve the best guiding effect. When the protective plate 2 is closed, the end of the pin 32 first contacts the guide surface 122. As the protective plate 2 is further closed, the guide surface 122 guides the pin 32 to gradually approach and enter the lock hole 121 until it is fully locked.

[0051] Reference Figures 5-7 As shown, in one embodiment, the protective plate 2 is provided with a lifting sleeve 5 and a positioning part 6, and the handrail mechanism 4 includes a handrail assembly 41 and a lifting assembly 42. The lifting sleeve 5 has a through hole 50, and the lifting assembly 42 includes a pull button 421 and a lifting rod 422 fixedly connected to the handrail assembly 41. The lifting rod 422 slides with the lifting sleeve 5, and the lifting rod 422 has multiple limiting holes 4220a. The pull button 421 passes sequentially through the through hole 50 and one of the multiple limiting holes 4220a, and is connected to the positioning part 6.

[0052] In this embodiment, the lifting component 42 of the handrail mechanism 4 cooperates with the lifting sleeve 5 on the protective plate 2 to achieve the height adjustment function of the handrail. When the user needs to adjust the height of the handrail, he pulls the button 421 along the axial direction of the through hole 50, so that the button 421 disengages from the limiting hole 4220a. At this time, the lifting rod 422 slides freely in the lifting sleeve 5. The user can move the handrail component 41 up and down to the desired height according to his own comfort, and then insert the button 421 back. The button 421 is inserted into the nearest limiting hole 4220a, thereby locking the handrail component 41. This height adjustment method is simple to operate and can provide multiple height levels for users to choose from, meeting the needs of different users.

[0053] In one embodiment, the pull button 421 includes a limiting part 4211 and a plug part 4212 connected to each other. A plurality of limiting holes 4220a are connected to form a slide rail 4220. Each limiting hole 4220a is provided with a limiting groove 4220b. The limiting groove 4220b is formed on the side of the lifting rod 422 away from the positioning part 6 and is used to cooperate with the limiting part 4211 for limiting. When the limiting part 4211 disengages from the limiting groove 4220b, the lifting rod 422 can slide along the slide rail 4220 relative to the plug part 4212.

[0054] In this embodiment, the cooperation between the limiting part 4211 and the limiting groove 4220b effectively prevents the lifting rod 422 from sliding freely in the unlocked state, ensuring the stability of the handrail assembly 41 in the locked position. When it is necessary to adjust the height of the handrail assembly 41, the user only needs to pull the button 421 along the axial direction of the through hole 50 to disengage the limiting part 4211 from the limiting groove 4220b. At this time, the lifting rod 422 can slide freely along the slide rail 4220 relative to the insertion rod part 4212. The user can move the handrail assembly 41 up and down to the desired height according to their own comfort, and then press the button 421. The limiting part 4211 is inserted into the nearest limiting groove 4220b to lock the handrail.

[0055] In one embodiment, the positioning part 6 can move relative to the protective plate 2 along the axial direction of the through hole 50, and the insertion rod part 4212 is fixedly connected to the positioning part 6; the lifting assembly 42 also includes a second elastic element 423, which is sleeved on the insertion rod part 4212 and abuts against the positioning part 6 and the lifting sleeve 5.

[0056] In this embodiment, this structure allows the positioning part 6 to move axially in the through hole 50 when adjusting the height of the armrest assembly 41. Simultaneously, the second elastic element 423 provides elastic force, ensuring a tight fit between the limiting part 4211 and the limiting groove 4220b. When the user pulls the button 421 axially along the through hole 50, disengaging the limiting part 4211 from the limiting groove 4220b, the positioning part 6 on the protective plate 2 overcomes the preload of the second elastic element 423, generating axial displacement. During this process, the second elastic element 423 is compressed and stores energy by the positioning part 6, providing elastic potential energy for subsequent automatic reset. Once the button 421 is released, the second elastic element 423 releases the stored elastic potential energy, driving the positioning part 6 to reset, causing the limiting part 4211 to re-embed into the limiting groove 4220b, thus achieving automatic locking of the armrest. This elastic locking mechanism not only improves the reliability of the locking mechanism but also makes the height adjustment operation smoother and more convenient.

[0057] Reference Figure 6 As shown, in one embodiment, the lifting sleeve 5 includes a sliding space 51 and a limiting space 52. The lifting rod 422 is disposed in the sliding space 51. One end of the second elastic member 423 abuts against the positioning part 6, and the other end abuts against the inner wall of the limiting space 52.

[0058] In this embodiment, the sliding space 51 provides a stable sliding path for the lifting rod 422, ensuring that it does not shift or wobble during height adjustment. The limiting space 52 provides an installation position for the second elastic element 423. The two ends of the second elastic element 423 abut against the positioning part 6 and the inner wall of the limiting space 52, respectively, forming an elastic system that automatically resets and locks. When the user adjusts the height of the handrail assembly 41, the lifting rod 422 moves up and down within the sliding space 51, while the second elastic element 423 is continuously compressed, storing elastic potential energy. When the user releases the pull button 421, or when the limiting part 4211 aligns with the limiting groove 4220b, the second elastic element 423 releases its elastic potential energy, pushing the positioning part 6 to reset and causing the limiting part 4211 to re-embed into the limiting groove 4220b, thus achieving automatic locking of the handrail. This structure improves the stability, reliability, and ease of operation of the handrail locking, and also optimizes space utilization, making the entire handrail mechanism 4 more compact.

[0059] In one embodiment, the installation mechanism 1 is provided with a limit block 13, which is used to limit the angle of the protective plate 2 when it is in the open state.

[0060] In this embodiment, the limiting block 13 effectively prevents the protective plate 2 from rotating excessively when open, thereby avoiding unnecessary collisions or interference between the protective plate 2 and surrounding components. It also provides the user with a stable operating angle, facilitating entry and exit from the equipment or other related operations. The limiting block 13 can be positioned appropriately in the mounting mechanism 1, such as behind the hinge seat 11. Its shape and size should be rationally designed according to the dimensions and rotation range of the protective plate 2 to ensure accurate contact and limiting effect when the protective plate 2 is open. The material of the limiting block 13 should possess sufficient strength and wear resistance to ensure it is not easily damaged during long-term use, thus ensuring the reliability of its limiting function.

[0061] Reference Figure 8 As shown, this disclosure also provides a wheelchair, including a main body 7, on which an armrest structure as described in any of the above embodiments is provided, and a mounting mechanism 1 is fixedly connected to the main body 7.

[0062] In this embodiment, the frame of the wheelchair body 7 can be made of high-strength aluminum alloy to reduce the burden on the user when pushing the wheelchair. The armrest structure mounting mechanism 1 is fixedly connected to the body 7 with nuts to ensure that the armrest structure can be firmly fixed to the body 7. The rotatable design of the protective plate 2 allows the user to easily get in and out of the wheelchair; the height-adjustable function of the armrest mechanism 4 can meet the needs of users of different heights and reduce physical fatigue caused by unsuitable armrest height; when the protective plate 2 is in the latched state, the locking mechanism 3 can firmly lock the protective plate 2 to the mounting mechanism 1, preventing the protective plate 2 from being accidentally loosened or opened due to external force or vibration during use, ensuring the continuity of the protective function and user safety, and improving the user experience.

[0063] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0064] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," and "above" are used herein to describe the spatial positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that spatial relative terms include not only the orientation of the component as depicted in the figures but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0066] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in sequences other than those illustrated or described herein.

[0067] This disclosure has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this disclosure to the described embodiments. Furthermore, those skilled in the art will understand that this disclosure is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this disclosure, all of which fall within the scope of protection claimed by this disclosure. The scope of protection of this disclosure is defined by the appended claims and their equivalents.

Claims

1. A handrail structure, characterized by include: Installation mechanism (1); The protective plate (2) has one bottom end hinged to the mounting mechanism (1) so that the protective plate (2) can rotate relative to the mounting mechanism (1). The protective plate (2) has an open state and a fastened state. The locking mechanism (3) is rotatably disposed at the other end of the bottom of the protective plate (2) for locking the protective plate (2) to the mounting mechanism (1) when the protective plate (2) is in the fastened state, and for enabling the protective plate (2) to rotate to the open state when unlocking; as well as The handrail mechanism (4) is slidably connected to the protective plate (2) and can be raised and lowered relative to the height of the protective plate (2).

2. The handrail structure of claim 1, wherein The locking mechanism (3) includes a lever (31) and a pin (32), the mounting mechanism (1) includes a locking seat (12), and the protective plate (2) has a mounting hole for the pin (32) to pass through; wherein, The lever (31) is rotatably mounted on the protective plate (2) via a pivot (33); The pin (32) is connected to the lever (31) and can slide within the mounting hole (21) under the action of the lever (31); The locking seat (12) has a locking hole (121). When the protective plate (2) is in the snap-fit ​​state and locked with the mounting mechanism (1), the pin (32) is inserted into the locking hole (121).

3. The handrail structure of claim 2, wherein The locking mechanism (3) further includes a first elastic element (34), which is sleeved on the pin (32) and accommodated in the mounting hole (21). One end of the first elastic element (34) abuts against the abutting part on the pin (32), and the other end abuts against the inner end face of the mounting hole (21).

4. A handrail structure according to claim 3, characterised in that The locking seat (12) is provided with a guide surface (122).

5. The handrail structure of claim 1, wherein The protective plate (2) is provided with a lifting sleeve (5) and a positioning part (6), and the handrail mechanism (4) includes a handrail assembly (41) and a lifting assembly (42); wherein, The lifting sleeve (5) is provided with a through hole (50); The lifting assembly (42) includes a pull button (421) and a lifting rod (422) fixedly connected to the handrail assembly (41). The lifting rod (422) is slidably engaged with the lifting sleeve (5). The lifting rod (422) has multiple limiting holes (4220a). The pull button (421) is sequentially inserted through the through hole (50) and one of the plurality of limiting holes (4220a) and connected to the positioning part (6).

6. A handrail structure according to claim 5, wherein The pull button (421) includes a limiting part (4211) and a plug part (4212) that are connected to each other; Multiple limiting holes (4220a) are connected to form a slide rail (4220), and each limiting hole (4220a) is provided with a limiting groove (4220b). The limiting groove (4220b) is formed on the side of the lifting rod (422) away from the positioning part (6) and is used to cooperate with the limiting part (4211) for limiting. When the limiting part (4211) disengages from the limiting groove (4220b), the lifting rod (422) can slide relative to the insertion rod part (4212) along the slide rail (4220).

7. A handrail structure according to claim 6, characterised in that The positioning part (6) can move relative to the protective plate (2) along the axial direction of the through hole (50), and the insertion rod part (4212) is fixedly connected to the positioning part (6); The lifting assembly (42) further includes a second elastic element (423), which is sleeved on the insertion rod portion (4212) and abuts against the positioning portion (6) and the lifting sleeve (5).

8. A handrail structure according to claim 7, characterised in that The lifting sleeve (5) includes a sliding space (51) and a limiting space (52). The lifting rod (422) is disposed in the sliding space (51). One end of the second elastic member (423) abuts against the positioning part (6), and the other end abuts against the inner wall of the limiting space (52).

9. The handrail structure of claim 1, wherein The installation mechanism (1) is provided with a limit block (13), which is used to limit the angle of the protective plate (2) when it is in the open state.

10. A wheelchair comprising a main body (7), characterised in that, The main body (7) is provided with a handrail structure as described in any one of claims 1-9, and the mounting mechanism (1) is fixedly connected to the main body (7).

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