Attitude-adjustable armrest with reciprocating adjusting mechanism

Abstract

The utility model discloses a reciprocating adjusting mechanism and a posture-adjustable armrest, which relate to the technical field of furniture manufacturing, and are characterized in that the reciprocating adjusting mechanism realizes reciprocating adjusting and positioning of a positioning part and a sliding part through combination of a positioning groove, a one-way adjusting gear and a positioning buckle; through the matching of the positioning buckle and the locking wall surface, the lock head can be automatically inserted and limited in the lock groove, so that the automatic locking of the positioning buckle is realized; through cooperation of the wedge-shaped unlocking element and the separation block, automatic unlocking of the positioning buckle can be achieved, manual intervention is not needed in the locking and unlocking process, and the operation difficulty of a user is reduced. The reciprocating adjusting mechanism is integrated into the armrest system, and the armrest has the multi-degree-of-freedom and high-precision posture adjusting capacity in cooperation with the multi-dimensional rotation and height lifting of the armrest body and the telescopic function of the armrest panel, so that the problems that a traditional armrest is complex in adjusting step and single in function are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of furniture manufacturing technology, specifically to a reciprocating adjustment mechanism and an adjustable armrest. Background Technology

[0002] Existing armrest adjustment mechanisms primarily focus on height or lateral position adjustment, lacking sufficient active adjustment capabilities for tilt angle. Traditional armrests, such as those in car seats or medical device support frames, typically achieve height adjustment or lateral sliding via threaded knobs or snap-fit ​​structures, but lack precise control over vertical tilt angle, resulting in cumbersome operation and limited adjustment dimensions. Existing armrest adjustment mechanisms often suffer from insufficient coordination due to independent control of each adjustment unit; for example, movement and angle adjustments require separate operations, lacking interoperability and failing to achieve smooth tilt angle transitions. Therefore, there is an urgent need for a posture-adjustable armrest that offers multi-dimensional adjustment to improve the convenience and comfort of armrest use. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned problems by providing a reciprocating adjustment mechanism and an adjustable handrail. The reciprocating adjustment mechanism achieves reciprocating adjustment and positioning of the positioning part and the sliding part through the combination of positioning groove, one-way adjustment position and positioning buckle. By integrating the reciprocating adjustment mechanism into the handrail system, and in conjunction with the multi-dimensional rotation, height adjustment and extension functions of the handrail body and the extension and retraction functions of the handrail panel, the handrail has a multi-degree-of-freedom and high-precision posture adjustment capability, effectively solving the problems of complex adjustment steps and single function of traditional handrails.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A reciprocating adjustment mechanism includes a positioning part and a sliding part. The sliding part has a positioning groove that matches the positioning part. The bottom of the positioning groove has a through-hole that penetrates the sliding part. The positioning part is mounted in the positioning groove. A positioning connector on the positioning part extends from the through-hole and connects to a mounting base. A positioning buckle is mounted on the positioning part. The two ends of the positioning groove along its length are respectively provided with a locking area and an unlocking area, and the middle of the positioning groove is provided with a gear adjustment area. The positioning part can reciprocate relative to the sliding part at both ends of the positioning groove along its length. The gear adjustment area has multiple unidirectional adjustment gears arranged side-by-side along the movement direction of the positioning part. The positioning buckle includes a positioning tooth and an elastic element. When the positioning buckle is in the unlocked state, the positioning... The positioning tooth can extend into any one-way adjustment position under the action of the elastic element to restrict the relative displacement between the sliding component and the positioning part. When the one-way adjustment position matches the positioning tooth, it restricts the positioning part from moving relative to the sliding component toward the unlocking area. When the positioning part moves relative to the sliding component toward the locking area under the action of external force, the positioning tooth can disengage from the current one-way adjustment position and extend into the next one-way adjustment position. When the positioning part is in the locking area, the locking structure of the locking area can act on the locking mechanism on the positioning buckle to lock the positioning buckle. When the positioning buckle is in the locked state, the positioning part can move freely relative to the sliding component. When the positioning part is in the unlocking area, the unlocking mechanism of the unlocking area can act on the locking mechanism to unlock the positioning buckle.

[0006] Thanks to the aforementioned technical solution, the positioning part can be reciprocated and adjusted through the cooperation of the positioning groove and the positioning buckle. The unidirectional adjustment setting allows free movement in a specific direction, while the elastic force provided by the elastic element ensures stable positioning of the positioning buckle in the unlocked state. The locking and unlocking areas are switched by a locking mechanism acting on the positioning buckle, realizing reciprocating unlocking and locking, allowing the positioning part to reciprocate and adjust within the positioning groove.

[0007] Furthermore, the paired one-way adjustment positions are located on both sides of the positioning groove width direction; the positioning part is provided with a loading cavity, and the two sides of the loading cavity that match the one-way adjustment positions are respectively provided with positioning openings that penetrate the positioning part; the positioning buckle includes a pair of positioning teeth, one side of the positioning teeth in the length direction is a positioning end that can match the one-way adjustment position, and the other end is a locking end for installing a locking mechanism; the paired positioning teeth are installed opposite each other in the loading cavity, and the positioning ends can extend or retract through the corresponding positioning openings; the elastic element is installed between the paired positioning teeth; the locking structure of the locking area is a locking wall that matches the positioning opening, and the paired positioning teeth can retract to the locking mechanism on the locking end for locking under the action of the locking wall.

[0008] By employing the aforementioned technical solution, and through the symmetrical distribution of unidirectional adjustment positions on both sides of the positioning groove's width, coupled with the design of paired positioning teeth, the positioning buckle can be locked simultaneously from both sides. This symmetrical structure enhances the locking stability of the positioning buckle, while the elastic element ensures the reliability of the positioning teeth's automatic extension and retraction. The locking area, via the locking wall, allows the positioning part to automatically engage the locking mechanism by retracting the paired positioning teeth when it moves to the locking area, making operation convenient.

[0009] Furthermore, the locking mechanism includes a lock head disposed on one of the positioning teeth and a lock groove disposed on the other positioning tooth. The lock head can be inserted into and confined within the lock groove to lock the positioning buckle. The lock head can disengage from the lock groove under external force to unlock the positioning buckle.

[0010] By adopting the above technical solution, the two positioning teeth form a stable mating structure in the locked state through the cooperation of the lock head and the lock groove, which ensures the reliable connection of the positioning buckle when locked. Under the action of external force, the lock head can be released from the lock groove to unlock. The adjustment is convenient and the operation steps are simplified, while ensuring the stability and adjustability of the locking mechanism.

[0011] Furthermore, it also includes a pressure block, which is assembled at the opening of the positioning groove. The pressure block and the sliding component cooperate to form an adjustment cavity, and the positioning part is loaded in the adjustment cavity. The unlocking mechanism includes an unlocking element and a pair of separation blocks. The pair of separation blocks are respectively disposed on the positioning teeth. When the positioning buckle is in the locked state, there is a gap between the pair of separation blocks. The unlocking element is a wedge-shaped structure and is disposed on the pressure block. When the positioning buckle enters the unlocking area, the unlocking element can extend into the gap between the pair of separation blocks. The pair of separation blocks can drive the pair of positioning teeth to move away from each other under the action of the unlocking element.

[0012] Thanks to the aforementioned technical solution, the adjustment cavity formed by the pressure block and the sliding component provides ample installation space for the positioning part. The wedge-shaped unlocking element in the unlocking mechanism effectively pushes the separating block to separate the positioning teeth, thereby causing the lock head to disengage from the lock groove and release the locking of the positioning buckle. This design allows the positioning buckle to automatically unlock without additional operation when entering the unlocking zone, improving the convenience and efficiency of adjustment.

[0013] Furthermore, an elastic reset member is provided between the sliding component and the positioning part. One end of the elastic reset member is connected to the sliding component, and the other end is connected to the side of the positioning part facing the unlocking area. When the positioning buckle is in the locked state, the elastic force provided by the elastic reset member can drive the positioning part to move relative to the sliding component toward the unlocking area.

[0014] Thanks to the aforementioned technical solution, the elastic reset component can drive the positioning part towards the unlocked area using its own elastic force when the positioning buckle is unlocked, providing users with a smooth adjustment experience. This automatic reset function reduces the resistance of manual operation and improves the smoothness of adjustment and ease of use.

[0015] Furthermore, the positioning tooth is a ratchet, and the one-way adjustment position is a tooth groove that matches the ratchet.

[0016] By adopting the above technical solution, the ratchet and tooth groove cooperation mechanism ensures that the positioning part is accurately fixed in the preset position, and the tooth groove design provides a stable positioning path for the ratchet, which improves the accuracy of adjustment and the reliability of positioning.

[0017] Furthermore, the sliding component is an arc-shaped structure that matches the mounting base surface; the positioning part can be moved relative to the sliding component toward the unlocking area so that the side where the unlocking area of ​​the sliding component is located is tilted downwards, and the positioning part can be moved relative to the sliding component toward the locking area so that the side where the unlocking area of ​​the sliding component is located is tilted upwards.

[0018] Thanks to the above technical solution, the arc-shaped structure design of the sliding component enables the sliding component to automatically adjust its angle as the position of the positioning part changes during movement, thus giving the sliding component the function of pitch adjustment.

[0019] An adjustable handrail includes a handrail body and a support structure, and also includes the aforementioned reciprocating adjustment mechanism. The mounting base of the positioning connector is located on the support structure, and the handrail body is mounted on a sliding component.

[0020] Thanks to the aforementioned technical solution, the handrail can be easily adjusted in position and posture by integrating a reciprocating adjustment mechanism. The fixed fit between the mounting base and the support structure, as well as the connection design between the handrail body and the sliding components, allows the handrail's position adjustment to be achieved through locking and unlocking the reciprocating adjustment mechanism, thus improving the handrail's applicability and flexibility of use.

[0021] Furthermore, the handrail body is rotatably connected to the sliding component via a first rotating assembly.

[0022] By adopting the above technical solution, the adjustable angle of the handrail body is realized through the first rotating component. The combination of the rotation function and the reciprocating adjustment mechanism can meet the operational needs of different usage scenarios and enhance the multifunctionality of the handrail.

[0023] Furthermore, the handrail body includes a handrail base plate and a handrail panel. The handrail panel is movably and positionably connected to the handrail base plate through a gear adjustment mechanism. The handrail base plate is rotatably connected to a sliding component through a first rotating assembly.

[0024] Thanks to the above technical solution, the movable positioning connection between the armrest panel and the armrest base plate has an additional adjustable dimension. Users can adjust the extension and retraction of the armrest panel through the gear adjustment mechanism. Combined with the armrest base plate, which is rotatably connected to the sliding component through the first rotating component, the armrest can be synergistically adjusted in multiple parameters, further improving its adaptability and user comfort.

[0025] Furthermore, the support structure includes a support base and a support adjustment part. The support adjustment part is vertically and vertically connected to the support base via a lifting adjustment assembly. The mounting base is located on the support adjustment part. The support adjustment part and the lifting assembly are rotatably connected via a second rotating assembly.

[0026] Thanks to the above technical solution, the lifting and adjusting components of the support structure make the height of the entire handrail body adjustable, and the reciprocating adjustment mechanism can rotate, enhancing the multi-dimensional adjustment capability of the handrail, thereby improving the applicability and functionality of the handrail.

[0027] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are as follows: The combination of the positioning groove, unidirectional adjustment position, and positioning buckle achieves reciprocating adjustment and positioning of the positioning part and the sliding part. Through the cooperation of the positioning buckle and the locking wall, the lock head can automatically insert and be confined within the lock groove, thereby achieving automatic locking of the positioning buckle; through the cooperation of the wedge-shaped unlocking element and the separating block, the positioning buckle can be automatically unlocked, eliminating the need for manual intervention in the locking and unlocking process and reducing the difficulty of user operation. The arc-shaped structure of the sliding part and the linkage design of the positioning part enable the reciprocating adjustment mechanism to simultaneously achieve adaptive angle adjustment during horizontal movement, breaking through the single-function limitation of traditional linear adjustment. Furthermore, integrating this reciprocating adjustment mechanism into the handrail system, combined with the multi-dimensional rotation, height adjustment, and telescopic function of the handrail body, gives the handrail multi-degree-of-freedom and high-precision posture adjustment capabilities, effectively solving the problems of complex adjustment steps and single function in traditional handrails. Attached Figure Description

[0028] Figure 1 This is an exploded view of the reciprocating adjustment mechanism of this utility model;

[0029] Figure 2 This is a schematic diagram of the reciprocating adjustment mechanism of this utility model in the first gear position;

[0030] Figure 3 This utility model relates to Figure 2 Stepped sectional view along the AA direction;

[0031] Figure 4 This is a schematic diagram of the reciprocating adjustment mechanism of this utility model in the second gear position;

[0032] Figure 5This utility model relates to Figure 4 Stepped sectional view in the middle BB direction;

[0033] Figure 6 This is a schematic diagram of the reciprocating adjustment mechanism of this utility model in the third gear position;

[0034] Figure 7 This utility model relates to Figure 6 Stepped sectional view in the CC direction;

[0035] Figure 8 This is a schematic diagram of the positioning part of this utility model entering the locking area;

[0036] Figure 9 This utility model relates to Figure 8 Stepped sectional view in the DD direction;

[0037] Figure 10 This is a schematic diagram of the structure of the lock head of this utility model being inserted into and confined within the lock groove;

[0038] Figure 11 This is a schematic diagram of the structure of the unlocking element of this utility model acting on the separation block;

[0039] Figure 12 This is an exploded view of the adjustable handrail of this utility model;

[0040] Figure 13 This is a schematic diagram of the structure of the gear adjustment mechanism of this utility model for adjusting the front and rear positions of the handrail body;

[0041] Figure 14 This is a schematic diagram of the structure of the lifting and adjusting component of this utility model for adjusting the height of the handrail body;

[0042] Figure 15 This is a schematic diagram of the structure of the first rotating component of this utility model for adjusting the rotation of the handrail body;

[0043] Figure 16 This is a schematic diagram of the structure of the second rotating component of this utility model for adjusting the rotation of the reciprocating adjustment mechanism.

[0044] The markings in the diagram are: 1-positioning part, 101-positioning connector, 102-loading cavity, 103-positioning port, 2-sliding component, 201-assembly through hole, 202-one-way adjustment gear, 203-sliding cover plate, 204-sliding base plate, 205-locking area, 206-unlocking area, 207-gear adjustment area, 3-unlocking mechanism, 301-unlocking element, 302-separation block, 4-positioning buckle, 401-positioning tooth, 402-elastic component, 403-locking mechanism, 5-pressure block, 6-elastic reset component, 7-first rotating assembly, 8-handrail body, 801-handrail base plate, 802-handrail panel, 9-gear adjustment mechanism, 10-support base, 11-support adjustment part, 12-lifting adjustment assembly, 13-second rotating assembly. Detailed Implementation

[0045] The present invention will now be described in detail with reference to the accompanying drawings.

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0047] Example 1

[0048] A reciprocating adjustment mechanism, such as Figures 1-11As shown, the device includes a positioning part 1 and a sliding part 2. The sliding part 2 has a positioning groove that matches the positioning part 1. The bottom of the positioning groove has an assembly through hole 201 that penetrates the sliding part 2. The positioning part 1 is installed in the positioning groove. A positioning connector 101 on the positioning part 1 extends out of the assembly through hole 201 and connects to the mounting base. The positioning part 1 is equipped with a positioning buckle 4. The two ends of the positioning groove in the length direction are respectively provided with a locking area 205 and an unlocking area 206, and the middle of the positioning groove is provided with a gear adjustment area 207. The positioning part 1 can reciprocate relative to the sliding part 2 at both ends in the length direction of the positioning groove. The gear adjustment area 207 has multiple one-way adjustment gears 202 arranged side by side along the moving direction of the positioning part 1. The positioning buckle 4 includes a positioning tooth 401 and an elastic element 402. When the positioning buckle 4 is in the unlocked state, the positioning tooth 401 can extend into any one-way adjustment gear 202 under the action of the elastic element 402 to restrict the relative movement between the sliding part 2 and the positioning part 1. The displacement is such that when the one-way adjustment position 202 matches the positioning tooth 401, it restricts the movement of the positioning part 1 relative to the sliding part 2 toward the unlocking area 206. When the positioning part 1 moves relative to the sliding part 2 toward the locking area 205 under the action of external force, the positioning tooth 401 can disengage from the current one-way adjustment position 202 and extend into the next one-way adjustment position 202. That is, the design of the positioning buckle 4 can restrict the relative displacement between the sliding part 2 and the positioning part 1 when no external force is applied, and allow the positioning part 1 to move relative to the sliding part 2 toward the locking area 205 under the action of external force. When the positioning part 1 is located in the locking area 205, the locking structure of the locking area 205 can act on the locking mechanism 403 on the positioning buckle 4 to lock the positioning buckle 4. When the positioning buckle 4 is in the locked state, the positioning part 1 can move freely relative to the sliding part 2. When the positioning part 1 is located in the unlocking area 206, the unlocking mechanism 3 of the unlocking area 206 can act on the locking mechanism 403 to unlock the positioning buckle 4.

[0049] Specifically, the positioning part 1 can be reciprocated and adjusted through the cooperation of the positioning groove and the positioning buckle 4. The design of the one-way adjustment position 202 allows free movement in a specific direction, while the elastic force provided by the elastic element 402 ensures the stable positioning of the positioning buckle 4 in the unlocked state. The locking area 205 and the unlocking area 206 switch states through the locking mechanism 403 acting on the positioning buckle 4, realizing reciprocating unlocking and locking, so that the positioning part 1 can reciprocate and adjust within the positioning groove.

[0050] The paired one-way adjustment positions 202 are located on both sides of the positioning groove width direction. In this embodiment, three pairs of one-way adjustment positions 202 are provided, thus realizing three-level adjustment of the positioning part 1 and the sliding part 2. The positioning part 1 is provided with a loading cavity 102. The two sides of the loading cavity 102 that match the one-way adjustment positions 202 are respectively provided with positioning openings 103 penetrating the positioning part 1. The positioning buckle 4 includes a pair of positioning teeth 401. One side of the positioning teeth 401 in the length direction is compatible with the one-way adjustment position 202. The gear shift 202 has a matching positioning end and a locking end for mounting the locking mechanism 403. Pairs of positioning teeth 401 are mounted opposite each other within the loading cavity 102, and the positioning ends can extend or retract through corresponding positioning ports 103. The elastic element 402 is installed between the pairs of positioning teeth 401. The locking structure of the locking area 205 is a locking wall surface that matches the positioning port 103. The pairs of positioning teeth 401 can retract under the action of the locking wall surface to lock with the locking mechanism 403 on the locking end. The structure of the locking wall surface is not unique; it can be a structure design that converges towards the locking area 205, or a structure design that is closer to the positioning part 1 than the gear shift adjustment area 207. As long as the retraction stroke of the positioning teeth 401 under the action of the locking wall surface is greater than the retraction stroke of the positioning teeth 401 under the action of the gear shift adjustment area 207, it is considered to fall within the protection scope of this application.

[0051] Specifically, by symmetrically distributing the unidirectional adjustment positions 202 on both sides of the positioning groove width direction, and in conjunction with the design of paired positioning teeth 401, the positioning buckle 4 can be locked simultaneously on both sides. This symmetrical structure enhances the locking stability of the positioning buckle 4, while the elastic element 402 ensures the reliability of the automatic extension and retraction of the positioning teeth 401. The locking area 205, through the locking wall, allows the positioning part 1 to automatically lock the locking mechanism 403 by retracting the paired positioning teeth 401 when it moves to the locking area 205, making operation convenient.

[0052] The locking mechanism 403 includes a lock head disposed on one of the positioning teeth 401 and a lock groove disposed on the other positioning tooth 401. The lock head can be inserted into and confined within the lock groove to lock the positioning buckle 4. The lock head can disengage from the lock groove under external force to unlock the positioning buckle 4. Specifically, through the cooperation of the lock head and the lock groove, the two positioning teeth 401 form a stable cooperation structure in the locked state, ensuring a reliable connection of the positioning buckle 4 when locked. The lock head disengaging from the lock groove under external force can unlock the mechanism. This facilitates adjustment, simplifies the operation, and ensures the stability and adjustability of the locking mechanism 403.

[0053] It also includes a pressure block 5, which is assembled at the opening of the positioning groove. The pressure block 5 and the sliding component 2 cooperate to form an adjustment cavity, and the positioning part 1 is loaded in the adjustment cavity. The unlocking mechanism 3 includes an unlocking element 301 and a pair of separating blocks 302. The pair of separating blocks 302 are respectively disposed on the positioning teeth 401. When the positioning buckle 4 is in the locked state, there is a gap between the pair of separating blocks 302. The unlocking element 301 has a wedge-shaped structure and is disposed on the pressure block 5. Specifically, the pressure block 5 is provided with an unlocking through hole for the separating blocks 302 to extend out. The unlocking element 301 is a wedge-shaped protrusion extending from the edge of the unlocking through hole into the unlocking through hole. The size of the unlocking through hole matches the distance of the gear adjustment. The separating blocks 302 can extend into the unlocking through hole and move within it. When the positioning buckle 4 enters the unlocking zone 206, the unlocking element 301 can extend into the gap between the paired separating blocks 302. Under the action of the unlocking element 301, the paired separating blocks 302 can drive the paired positioning teeth 401 to move away from each other. Specifically, the adjustment cavity formed by the pressure block 5 and the sliding component 2 provides good installation space for the positioning part 1. The wedge-shaped unlocking element 301 in the unlocking mechanism 3 can effectively push the separating blocks 302 to separate the positioning teeth 401, thereby driving the lock head to disengage from the lock groove and releasing the lock on the positioning buckle 4. This design allows the positioning buckle 4 to automatically unlock without additional operation when entering the unlocking zone 206, improving the convenience of adjustment and operational efficiency.

[0054] An elastic reset member 6 is also provided between the sliding component 2 and the positioning part 1. One end of the elastic reset member 6 is connected to the sliding component 2, and the other end is connected to the side of the positioning part 1 facing the unlocking area 206. When the positioning buckle 4 is in the locked state, the elastic force provided by the elastic reset member 6 can drive the positioning part 1 to move relative to the sliding component 2 towards the unlocking area 206. Specifically, when the positioning buckle 4 is unlocked, the elastic reset member 6 can drive the positioning part 1 to move towards the unlocking area 206 through its own elastic force, providing the user with a smooth adjustment experience. This automatic reset function reduces the resistance of manual operation and improves the smoothness of adjustment and ease of use.

[0055] The positioning tooth 401 is a ratchet, and the one-way adjustment position 202 is a tooth groove that matches the ratchet. Specifically, the ratchet and tooth groove cooperation mechanism ensures that the positioning part 1 is accurately fixed in the preset position, and the tooth groove design provides a stable positioning path for the ratchet, improving the accuracy of adjustment and the reliability of positioning.

[0056] The sliding component 2 has an arc-shaped structure that matches the mounting base surface. The positioning part 1 can move relative to the sliding component 2 towards the unlocking area 206, causing the side of the sliding component 2 containing the unlocking area 206 to tilt downwards. Conversely, the positioning part 1 can move relative to the sliding component 2 towards the locking area 205, causing the side of the sliding component 2 containing the unlocking area 206 to tilt upwards. Specifically, the arc-shaped structure design of the sliding component 2 enables it to automatically adjust its angle according to the position change of the positioning part 1 during movement, thus providing the sliding component 2 with pitch adjustment functionality.

[0057] Example 2

[0058] An adjustable handrail, such as Figures 1-16 As shown, the armrest includes a handrail body 8 and a support structure, as well as a reciprocating adjustment mechanism as described in Embodiment 1. The mounting base surface connected to the positioning connector 101 is located on the support structure. The handrail body 8 is mounted on a sliding component 2. The sliding component 2 includes a sliding base plate 204 and a sliding cover plate 203 that can engage with each other. After the sliding base plate 204 and the sliding cover plate 203 are engaged, they can form an adjustment cavity. The positioning groove is located on the sliding base plate 204. Specifically, by integrating the reciprocating adjustment mechanism, the handrail can achieve convenient adjustment of its position and posture. The fixed fit between the mounting base surface and the support structure, as well as the connection design between the handrail body 8 and the sliding component 2, allows the position adjustment of the handrail to be achieved through locking and unlocking the reciprocating adjustment mechanism, improving the applicability and flexibility of the handrail.

[0059] The handrail body 8 is rotatably connected to the sliding component 2 via the first rotating component 7. Specifically, the first rotating component 7 enables the adjustable angle of the handrail body 8. The combination of the rotation function and the reciprocating adjustment mechanism can meet the operational needs of different usage scenarios and enhance the versatility of the handrail.

[0060] The handrail body 8 includes a handrail base plate 801 and a handrail panel 802. The handrail panel 802 is movably and positionably connected to the handrail base plate 801 via a gear adjustment mechanism 9. The handrail base plate 801 is rotatably connected to the sliding component 2 via a first rotating component 7. Specifically, the movable connection between the handrail panel 802 and the handrail base plate 801 adds an adjustable dimension. Users can adjust the extension and retraction of the handrail panel 802 through the gear adjustment mechanism 9. Combined with the rotatable connection between the handrail base plate 801 and the sliding component 2 via the first rotating component 7, the handrail achieves coordinated adjustment of multiple parameters, further improving its adaptability and user comfort.

[0061] The support structure includes a support base 10 and a support adjustment part 11. The support adjustment part 11 is vertically and vertically connected to the support base 10 via a lifting adjustment assembly 12. The mounting base is located on the support adjustment part 11. The support adjustment part 11 and the lifting assembly are rotatably connected via a second rotating assembly 13. Specifically, as... Figure 14 As shown, the lifting and adjusting component 12 of the supporting structure makes the height of the entire handrail body 8 adjustable, enhancing the multi-dimensional adjustment capability of the handrail and thus improving its applicability and functionality. In addition, as... Figure 16 As shown, the second rotating component 13 can enable the handrail body 8 to rotate forward or backward.

[0062] The gear adjustment mechanism 9, the lifting adjustment component 12, the first rotating component 7 and the second rotating component 13 are all existing technologies, and their specific structures will not be described in detail here.

[0063] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0064] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0065] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A reciprocating adjustment mechanism characterized by, The application relates to a positioning device, which comprises a positioning part and a sliding part, wherein a positioning groove matched with the positioning part is arranged on the sliding part, a through assembly hole is arranged on the groove bottom of the positioning groove, the positioning part is loaded in the positioning groove, a positioning connector on the positioning part extends from the assembly hole and is connected to a mounting base surface, and a positioning buckle is loaded on the positioning part; two ends of the positioning groove in the length direction are respectively provided with a locking area and an unlocking area, a gear adjusting area is arranged in the middle of the positioning groove, the positioning part can reciprocate in the length direction of the positioning groove relative to the sliding part, a plurality of one-way adjusting gears are arranged side by side along the moving direction of the positioning part; the positioning buckle comprises a positioning tooth and an elastic element; when the positioning buckle is in the unlocking state, the positioning tooth can extend into any one-way adjusting gear under the action of the elastic element to limit the relative displacement of the sliding part and the positioning part, the one-way adjusting gear limits the movement of the positioning part relative to the sliding part towards the unlocking area when the positioning tooth is matched with the one-way adjusting gear, and when the positioning part moves relative to the sliding part towards the locking area under the action of external force, the positioning tooth can be separated from the current one-way adjusting gear and extend into the next one-way adjusting gear. When the positioning part is located in the locking area, the locking structure of the locking area can act on the locking mechanism of the positioning buckle to make the positioning buckle in the locking state. When the positioning buckle is in the locking state, the positioning part can freely move relative to the sliding part; when the positioning part is located in the unlocking area, the unlocking mechanism of the unlocking area can act on the locking mechanism to make the positioning buckle in the unlocking state.

2. The reciprocating adjustment mechanism of claim 1, wherein, The one-way adjusting gears are arranged on both sides of the width direction of the positioning groove; the positioning part is provided with a loading cavity, the two sides of the loading cavity matched with the one-way adjusting gears are respectively provided with a positioning opening penetrating through the positioning part, the positioning buckle comprises a pair of positioning teeth, one side of the positioning tooth in the length direction is a positioning end matched with the one-way adjusting gear, the other end is a locking end used for mounting the locking mechanism, the pair of positioning teeth are oppositely arranged in the loading cavity, and the positioning end can extend out or retract through the corresponding positioning opening; the elastic element is arranged between the pair of positioning teeth; the locking structure of the locking area is a locking wall surface matched with the positioning opening, and the pair of positioning teeth can retract to the locking mechanism on the locking end under the action of the locking wall surface.

3. The reciprocating adjustment mechanism of claim 2, wherein, The locking mechanism comprises a lock head arranged on one of the positioning teeth and a lock groove arranged on the other positioning tooth, the lock head can be inserted into and limited in the lock groove to make the positioning buckle in the locking state, and the lock head can be separated from the lock groove under the action of external force to make the positioning buckle in the unlocking state.

4. The reciprocating adjustment mechanism of claim 3, wherein, The application further comprises a pressing block, the pressing block is assembled at the opening of the positioning groove, the pressing block and the sliding part are matched to form an adjusting cavity, and the positioning part is loaded in the adjusting cavity; the unlocking mechanism comprises an unlocking element and a pair of separation blocks, the pair of separation blocks are respectively arranged on the positioning teeth, when the positioning buckle is in the locking state, the pair of separation blocks are spaced apart, the unlocking element is in a wedge structure, the unlocking element is arranged on the pressing block, when the positioning buckle enters the unlocking area, the unlocking element can extend into the gap between the pair of separation blocks, and the pair of separation blocks can drive the pair of positioning teeth to move away from each other under the action of the unlocking element.

5. The reciprocating adjustment mechanism of claim 1, wherein, The sliding component and the positioning part are further provided with an elastic reset member, one end of the elastic reset member is connected to the sliding component, and the other end is connected to one side of the positioning part facing the unlocking area; when the positioning buckle is in the locking state, the elastic force provided by the elastic reset member can drive the positioning part to move relative to the sliding component towards the unlocking area.

6. The reciprocating adjustment mechanism of claim 1, wherein, The sliding component is an arc-shaped structure matching the installation base surface; when the positioning part moves relative to the sliding component towards the unlocking area, the side of the sliding component where the unlocking area is located can be lowered; when the positioning part moves relative to the sliding component towards the locking area, the side of the sliding component where the unlocking area is located can be raised.

7. A posture adjustable armrest comprising an armrest body and a support structure, characterized in that, Further comprising the reciprocating adjusting mechanism as claimed in any one of claims 1-6, the installation base surface connected by the positioning connecting member is arranged on the support structure, and the handrail body is installed on the sliding component.

8. The adjustable attitude handrail of claim 7, wherein, The handrail body is rotatably connected to the sliding component through the first rotating assembly.

9. The adjustable attitude handrail of claim 7, wherein, The handrail body comprises a handrail bottom plate and a handrail panel, the handrail panel is movably and positionally connected to the handrail bottom plate through the gear adjusting mechanism, and the handrail bottom plate is rotatably connected to the sliding component through the first rotating assembly.

10. The adjustable attitude handrail of claim 7, wherein, The support structure comprises a support base and a support adjusting part, the support adjusting part is liftably connected to the support base through the lifting adjusting assembly, the installation base surface is arranged on the support adjusting part, and the support adjusting part is rotatably connected to the lifting assembly through the second rotating assembly.

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